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What diversity, inclusion and collaboration? (Re)defining the values of Scholarly Communication from the Digital Humanities
|
https://av.tib.eu/media/19693
| null |
https://tib.flowcenter.de/mfc/medialink/3/dec7642781525934ba4a079302df812fce7b5340924fffce7f93e822d8b0c1d848/S4-2_Dr_Gimena_del_Rio_Riande_OAI12_presentation_E.mp4
|
2021
|
Computer Science
Information Science
|
Conference/Talk
|
The Digital Humanities propose innovative digital and computational methodologies and practices, together with new approaches to research, publication and evaluation. Although debates about the values of the Digital Humanities have a long history in Northern academies, Latin America has been more interested in rethinking the Digital Humanities from open access and open science movements. Values such as diversity, inclusion and collaboration have thus been benefited by new theoretical approaches and implementation through different scholarly communication resources and digital tools.
|
English
|
10.5446/19693 (DOI)
|
CC Attribution - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Rio Riande, Gimena del
| null |
A Platform to Assess the Trust in Power System Components Data, and Services
|
https://av.tib.eu/media/57092
| null |
https://tib.flowcenter.de/mfc/medialink/3/de803c70329fd71bf750f40ca2c5d1b33276b632d20839cce1971267027188846c/CRL_Demo.mp4
|
2022
|
Computer Science
|
Conference/Talk
| null |
English
|
10.5446/57092 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 3.0 Germany:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Brand, Michael
| null |
Plone 6 (eng)
|
https://av.tib.eu/media/19678
| null |
https://tib.flowcenter.de/mfc/medialink/3/de0e331157ddf682fcc196ccd1769314384ce32b2c95258404221869dcaf826894/Plone_6__English___yaYy86jdk8.mp4
|
2021
|
Computer Science
|
Conference/Talk
| null |
English
|
10.5446/19678 (DOI)
|
CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Kleinfeldt, Sally
| null |
The first image of a black hole
|
https://av.tib.eu/media/57496
| null |
https://tib.flowcenter.de/mfc/medialink/3/de427ef7677d2c6a6917b521d96efc65ad136bf205ca67b024f4b291843f78cd62/01_Rezzolla_final.mp4
|
2022
|
Mathematics
|
Conference/Talk
|
I will briefly discuss how the first image of a black hole was obtained by the EHT collaboration. In particular, I will describe the theoretical aspects that have allowed us to model the dynamics of the plasma accreting onto the black hole and how such dynamics was used to generate synthetic black-hole images. I will also illustrate how the comparison between the theoretical images and the observations has allowed us to deduce the presence of a black hole in M87 and to extract information about its properties. Finally, I will describe the lessons we have learned about strong-field gravity and alternatives to black holes.
|
English
|
10.5446/57496 (DOI)
|
CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Rezzolla, Luciano
| null |
Developing an Arduino-based control system for temperature-dependent gas modification in fruit storage container
|
https://av.tib.eu/media/57508
| null |
https://tib.flowcenter.de/mfc/medialink/3/def5f8349b4d6e61d269ba815c5c07cdb2cc6f3f66998c4696409c330a8531ba25c5/13_Jalali.mp4
|
2022
|
Mathematics
|
Conference/Talk
|
Temperature is one of the most important factors affecting quality and shelf life of fresh fruits and vegetables. Fresh produce is exposed to changing temperature conditions during the supply chain. This makes a big challenge in designing storage transport containers, which are supposed to provide optimum modified gas concentration inside. In this study, a system was developed to actively control CO2 and O2 concentrations inside a storage container under constant and changing temperature. A mini blower exchanging air between the container and external atmosphere controlled the internal gas concentration. This was done with the help of a thin and long tube, which prevented air from entering the container but facilitated air exchange when the blower is switched ON. The Blower ON Frequency (s h-1) was modelled as a function of storage temperature, taking the type and amount of fruit, blower and tube properties and the set point of O2 volumetric concentration into account. The model was then used in programming an Arduino microcontroller to control the blower in response to real-time measurement of storage temperature. The developed gas control system was then validated by storage of sweet cherries. The system could control the CO2 concentration at the set point level (12.5 ?for constant temperatures of 6 °C and 17 °C and changing temperature from 17 °C to 9 °C by applying the required Blower ON Frequency. There was a good agreement between the measured values of gas concentration and predicted values from the simulation so that the maximum RMSE value of predictions was 0.24 ?elated to O2 at changing temperature condition.
|
English
|
10.5446/57508 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 3.0 Germany:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Jalali, Ali
| null |
The Julia Programming Language: an overview
|
https://av.tib.eu/media/57515
| null |
https://tib.flowcenter.de/mfc/medialink/3/dea070866278a3450480169e61139b7b671e58b4e3f398319aeab13adf3a821953/20_Fuhrmann.mp4
|
2022
|
Mathematics
|
Conference/Talk
|
The Julia programming language is gaining increasing attraction in scientific computing, data analysis, machine learning and other fields. Some of its outstanding features are: - open source license - easy-to-learn syntax - powerful abstractions and generic programming features - high performance potential due to just-in-time compiling - extensibility and reproducibility via sophisticated package management - portability among operating systems - re-use of existing codebase via interfaces to other languages The talk provides an example-based introduction into Julia and some of its basic concepts and discusses examples where recent research at WIAS was able to take advantage of Julia.
|
English
|
10.5446/57515 (DOI)
|
CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Fuhrmann, Jürgen
| null |
API de OGC: antecedentes, estado actual, qué sigue
|
https://av.tib.eu/media/57307
| null |
https://tib.flowcenter.de/mfc/medialink/3/dedfba148c8f2054c799e9fafaf6926e7c4662d6cf35d5f76132655101fac0f478/FOSS4G_-_API_de_OGC__antecedentes__estado_actual___Wv8GMkd00XU.mp4
|
2021
|
Computer Science
|
Conference/Talk
|
The OGC Application Programming Interface (API) suite of standards is a family of Web APIs that have been created as extensible specifications designed as modular building blocks that enable access to spatial data that can be used in data APIs. This presentation provides an insight into OGC API activities, developments and an outlook on what to expect in the last quarter of the year and 2022. And it will give an update on the "hot" topics around OGC APIs and OGC open standards, the collaboration of OSGeo and OGC and how we can further develop open standards together. This presentation provides an insight into OGC API activities, developments and an outlook on what to expect in the last quarter of the year and 2022. And it will give an update on the "hot" topics around OGC APIs and OGC open standards, the collaboration of OSGeo and OGC and how we can further develop open standards together. Authors and Affiliations – Trakas, Athina (1) Hobona, Gobe (1) (1) Open Geospatial Consortium Track – Software Topic – Standards, interoperability, SDIs Level – 2 - Basic. General basic knowledge is required. Language of the Presentation – English
|
English
|
10.5446/57307 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Hobona, Gobe
Trakas, Athina
|
Simoes, Joana (Moderation)
|
Create dynamic content of the map ‘on the fly’
|
https://av.tib.eu/media/57258
| null |
https://tib.flowcenter.de/mfc/medialink/3/de72cd015f7cc2437edb8534f46eda5b3de50ee0f58ce3f126c6ec96969c07df7a/FOSS4G_2021_-_Create_dynamic_content_of_the_map__o_uDb0MLx8nco.mp4
|
2021
|
Computer Science
|
Conference/Talk
|
This presentation will introduce a high level idea of creation of a web service that returns the map content generated "on the fly". It will show how to implement any custom logic, analysis, data calculation, data interoperability and present the output on the map within the request's time span. In the heart of the service you will see Mapserver-Mapscript library. Nowadays building a web-mapping system to show maps from static data like vector and raster files seems to be an obvious task. For more complex solutions we need to make the mapping system “more intelligent”. The content of the map should be calculated, processed, transformed, fetched, created “on the fly” depending on some specific logic. To implement it, we need the proper architecture, technology and solution. Not each way is optimal, fast, smart and easy enough. Sometimes technology exploration is time consuming but the solution could be very simple. This presentation will give you some idea of creating a web service which returns the dynamic map content using Mapserver-Mapscript library and Geoserver. Authors and Affiliations – Bartlomiej Burkot Requirements for the Attendees – To understand the web mapping system structure: Understand what is WMS, basics of programming, networking. Track – Software Topic – Software/Project development Level – 2 - Basic. General basic knowledge is required.
|
English
|
10.5446/57258 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Burkot, Bartłomiej
|
Terner, Michael (Moderation)
|
Creating Maps in GeoServer using CSS and SLD
|
https://av.tib.eu/media/57259
| null |
https://tib.flowcenter.de/mfc/medialink/3/deb7940a7597f31b05208d79df9a94e21a27b27d468517081709fce91a21013d2a/FOSS4G_2021_-_Creating_Maps_in_GeoServer_using_CSS_5ubNveUVIJA.mp4
|
2021
|
Computer Science
|
Conference/Talk
|
The presentation aims to provide attendees with enough information to master GeoServer styling documents and most of GeoServer extensions to generate appealing, informative, readable maps that can be quickly rendered on screen. Examples will be provided from the OSM data directory GeoSolutions shared with the community. Several topics will be covered, providing examples in CSS and SLD, including: * Mastering common symbolization, filtering, multi-scale styling. * Using GeoServer extensions to build common hatch patterns, line styling beyond the basics, such as cased lines, controlling symbols along a line and the way they repeat. * Leveraging TTF symbol fonts and SVGs to generate good looking point thematic maps. * Using the full power of GeoServer label lay-outing tools to build pleasant, informative maps on both point, polygon and line layers, including adding road plates around labels, leverage the labelling subsystem conflict resolution engine to avoid overlaps in stand alone point symbology. * Dynamically transform data during rendering to get more explicative maps without the need to pre-process a large amount of views. * Generating styles with external tools Authors and Affiliations – Andrea Aime (1) Stefano Bovio (1) (1) GeoSolutions Group (https://www.geosolutionsgroup.com/) Track – Software Topic – Data visualization: spatial analysis, manipulation and visualization Level – 3 - Medium. Advanced knowledge is recommended. Language of the Presentation – English
|
English
|
10.5446/57259 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Aime, Andrea
|
N. N. (Moderation)
|
Crunching Data In GeoServer with Discrete Global Grid Systems (DGGS)
|
https://av.tib.eu/media/57260
| null |
https://tib.flowcenter.de/mfc/medialink/3/dea31f27794e6a1637885b9f1c7fbe303c05dba2d55f55b57bf77c55c46e08a372/FOSS4G_2021_-_Crunching_Data_In_GeoServer_with_Dis_nsgkdASRfhs.mp4
|
2021
|
Computer Science
|
Conference/Talk
|
Discrete Global Grid Systems are a way to tessellate the entire planet into zones sharing similar characteristics, with multiple resolutions to address different precision needs, allowing integration of data coming from different data sources, and on demand analysis of data. Come to this presentation to have an introduction to the DGGS concepts, learn when they are a good fit for a specific problem, and get an update on their implementation in GeoServer. GeoServer is a web service for publishing your geospatial data using industry standards for vector, raster and mapping. It powers a number of open source projects like GeoNode and geOrchestra and it is widely used throughout the world by organizations to manage and disseminate data at scale. Discrete Global Grid Systems are a way to tessellate the entire planet into zones sharing similar characteristics, with multiple resolutions to address different precision needs, allowing integration of data coming from different data sources, and on demand analysis of data. The presentation will introduce: * Basic DGGS concepts * The Uber H3 and the rHealPix DGGSes, comparing and contrasting their structure and use cases * A OGC API exposing DGGS for data access, and another, DAPA, for data analysis * GeoServer implementations of the DGGS concepts and APIs, based on a ClickHouse OLAP database. Come to this presentation to have an introduction to the DGGS concepts, learn when they are a good fit for a specific problem, and get an update on their implementation in GeoServer. Authors and Affiliations – Andrea Aime (1) Simone Giannecchini (1) (1) GeoSolutions Group (https://www.geosolutionsgroup.com) Track – Software Topic – Software/Project development Level – 2 - Basic. General basic knowledge is required. Language of the Presentation – English
|
English
|
10.5446/57260 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Aime, Andrea
Giannecchini, Simone
|
N. N. (Moderation)
|
Curating machine learning datasets in international collaborations - case stude on the Island of Bali
|
https://av.tib.eu/media/57261
| null |
https://tib.flowcenter.de/mfc/medialink/3/de633b23c96b403a69c13304b13b15d905140aa24761495c30fb2a1d206e0b3a61ea/FOSS4G_2021_-_Curating_machine_learning_datasets_i_TSNyk43qG98.mp4
|
2021
|
Computer Science
|
Conference/Talk
|
Curating machine learning datasets in international collaborations – case study on the Island of Bali State of the art environmental datasets often combine satellite-based remote sensing information with data collected by humans in the field. This poses unique challenges to data collection and curation, specially if these materials are to be made amenable to machine learning processes. And the task become more challenging in international collaborations across language differences, cultural barriers and economic gradients. This talk will present an overview of ongoing work situated on the Island of Bali that seeks to build a machine learning compatible dataset on ethnobotany collected on the ground in combination with land use data collected via satellites. This project is a collaborative effort between scholars from the US and Indonesia, as well as data collectors on the Island of Bali. The goal of the project is to make use of the synergies between remote sensing data and field data to better understand how local communities are in fact using their lands, and how tourism is impacting already limited resources on the island. State of the art environmental datasets often combine satellite-based remote sensing information with data collected by humans in the field. This poses unique challenges to data collection and curation, specially if these materials are to be made amenable to machine learning processes. And the task become more challenging in international collaborations across language differences, cultural barriers and economic gradients. This talk will present an overview of ongoing work situated on the Island of Bali that seeks to build a machine learning compatible dataset on ethnobotany collected on the ground in combination with land use data collected via satellites. This project is a collaborative effort between scholars from the US and Indonesia, as well as data collectors on the Island of Bali. The goal of the project is to make use of the synergies between remote sensing data and field data to better understand how local communities are in fact using their lands, and how tourism is impacting already limited resources on the island. Authors and Affiliations – Marc Böhlen, University at Buffalo Jianqiao Liu, University at Buffalo Wawan Sujarwo, Indonesian Institute of Sciences Rajif Iryadi, Indonesian Institute of Sciences Track – Use cases & applications Topic – Data collection, data sharing, data science, open data, big data, data exploitation platforms Level – 1 - Principiants. No required specific knowledge is needed. Language of the Presentation – English
|
English
|
10.5446/57261 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Böhlen, Marc
|
Emanuele, Rob (Moderation)
|
Deployment of open source vector tile technology with UN Vector Tile Toolkit
|
https://av.tib.eu/media/57262
| null |
https://tib.flowcenter.de/mfc/medialink/3/de342164ffe6c29fb778ea7863ef347a46835c5cf1eaaad78cd69a4fd7fb354a75fd/FOSS4G_2021_-_Deployment_of_open_source_vector_til_OGdzdVhV0cA.mp4
|
2021
|
Computer Science
|
Conference/Talk
|
The UN Vector Tile Toolkit (UNVT) project started in 2018 and it has been developed as a part of the UN Open GIS Initiative which aims to develop an Open Source GIS bundle that meets the requirements of UN operations. The toolkit includes a set of Nodejs open source scripts to be used with existing and proven open-source vector tile software (such as Tippecanoe, Maputnik, Mapbox GL JS (ver. 1.x) and vt-optimizer). This talk will introduce an example of UNVT deployment at UN and other examples including vector map delivery using Raspberry pi. After development of the basic toolsets by early 2020, we started developing an open source vector tile web map service in UN. At each phase of the vector tile development (i.e. data conversion, styling, hosting and optimizing), UNVT was utilized to proceed the process efficiently. At the first phase, the production phase, we have converted the vector tile of the whole world and updated them weekly with the developed nodejs script and Tippecanoe. The source data is stored in PostGIS data base and extracted by tile by tile due to its large data size. At the following styling phase, in order to efficiently develop a style fie, a hocon file was prepared for each style layer, then compiled into a single style json. At hosting phase, we have developed nodejs based simple vector tile hosting server which deliver the pbf files derived from mbitiles upon each request. Recently, UNVT has been used even outside the United Nations. This talk will briefly introduce such examples as much as possible. The UNVT was first introduced at FOSS4G 2019. Our toolkit is now released from the following our GitHub accounts: https://github.com/un-vector-tile-toolkit https://github.com/unvt Authors and Affiliations – Taro Ubukawa (1) , Diego Gonzalez Ferreiro (2), Paolo Frizzera (2), Oliva Martin Sanchez (2), Hidenori Fujimura (3) (1) Geospatial Information Section, Office of Information and Communications Technology, United Nations (2) Service for Geospatial, Information and Telecommunications Technologies, United Nations Global Service Centre, UN Department of Operational Support (3) Geospatial Information Authority of Japan Track – Use cases & applications Topic – Data visualization: spatial analysis, manipulation and visualization Level – 3 - Medium. Advanced knowledge is recommended. Language of the Presentation – English
|
English
|
10.5446/57262 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Ubukawa, Taro
Fujimura, Hidenori
|
Unen, Can (Moderation)
|
Enjoy your trip. Customize and print your map!!
|
https://av.tib.eu/media/57263
| null |
https://tib.flowcenter.de/mfc/medialink/3/de98cab90344e43697c11d54d4606b28ee3feb7a980ec63f52c91c0c89691eecc0/FOSS4G_2021_-_Enjoy_your_trip__Customize_and_print_owde5zrzQMg.mp4
|
2021
|
Computer Science
|
Conference/Talk
|
Nowadays we are used to consume cartography through the screen of a computer or a mobile device by means of map viewers, so that we interactively select the portion of territory we are interested in explore through a continuous territory without the traditional sheet limits of paper maps. Based on this current way of consulting geographic information, taking advantage of the possibilities offered by new technologies and preserving the essence of paper maps, the CNIG (Spanish National Centre for Geographic Information) has developed the on-demand cartography project "Mapa a la Carta” (“Map on Demand”), which highlights its cartographic information and its integration through OGC services. It is an application where the user can configure the map to their own taste and needs, allowing the choice of the portion of territory that the map will contain, the scale (within a range) and even the personalisation of the title and cover of the map. It also allows drawing points, lines and polygons on the cartography that can be labelled, or inserting other geographic data such as those that can be registered on a route on foot by means of a GPS, or other types of information downloaded from the Internet in different formats. For the development, a solution has been designed consisting of several Open Source software components. The front-end, an intuitive environment programmed in React JS, interacts with the spatial reference information by consuming the map services provided by the API-IGN, the IGN Search geographic name searches, as well as the OGC WMTS visualisation services of IGN cartography. This set of services allows the user to define the conditions of the desired map that MapFish will finally generate, in high resolution PDF format. It is very important to highlight the integration of the information with COG (Cloud-Optimized Geotiff) formats for high-resolution printing using GDAL. With all this, we go from being users or readers of cartography to creators of new maps by reusing resources, and having the digital product in PDF format in a matter of seconds with the possibility of sharing it among our contacts. Finally, to provide the solution with added value, there is also the option of having the map generated in standard or resistant paper format and with professional printing quality to be purchased in an online shop. url: https://mapaalacarta.cnig.es Technologies: WMTS, COG, GDAL, MapFish, OpenLayers, Mapea, React JS, API-IGN ________________________________________ Authors and Affiliations – Centro Nacional de Información Geográfica - Celia Sevilla Sánchez Developed by Guadaltel Track – Use cases & applications Topic – Standards, interoperability, SDIs Level – 2 - Basic. General basic knowledge is required. Language of the Presentation – English
|
English
|
10.5446/57263 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Soriano, Enrique
|
Terner, Michael (Moderation)
|
FOSS4G and the climate crisis: Let's get to work
|
https://av.tib.eu/media/57264
| null |
https://tib.flowcenter.de/mfc/medialink/3/ded0a0d1f52b47dd5f10f7f54cf90ba54280c1aa7a6e46e38736f266edf40afb5b/FOSS4G_2021_-_FOSS4G_and_the_climate_crisis__Let_s_RSfVJpOv6cs.mp4
|
2021
|
Computer Science
|
Conference/Talk
|
The Paris climate agreement targets limiting our global heating to 1.5°C above pre-industrial averages. However, there are reports stating that this goal is now "virtually impossible"[1] to achieve, and recent research claims that the planet is already committed to over 2°C[1] of global heating. The effects of this level of warming will be widespread and hard to predict, but one thing is clear - our ability to process and analyze geospatial data in order to monitor, model and manage Earth's natural systems will be key to responding effectively and intelligently to the challenges humanity will face over the next century. We in the open source geospatial community have the opportunity to build the technologies that will be critical to mitigating and adapting to the rising effects of climate change. In this talk I will challenge our amazing community to use its vast talents and capabilities to work towards supplying the future with the data and tools it needs in the fight to protect our Earth. [1] The risks to Australia of a 3°C warmer world | Australian Academy of Science [2] Greater committed warming after accounting for the pattern effect | Nature Climate Change The Paris climate agreement targets limiting our global heating to 1.5°C above pre-industrial averages. However, there are reports stating that this goal is now "virtually impossible"[1] to achieve, and recent research claims that the planet is already committed to over 2°C[1] of global heating. The effects of this level of warming will be widespread and hard to predict, but one thing is clear - our ability to process and analyze geospatial data in order to monitor, model and manage Earth's natural systems will be key to responding effectively and intelligently to the challenges humanity will face over the next century. We in the open source geospatial community have the opportunity to build the technologies that will be critical to mitigating and adapting to the rising effects of climate change. In this talk I will challenge our amazing community to use its vast talents and capabilities to work towards supplying the future with the data and tools it needs in the fight to protect our Earth. [1] The risks to Australia of a 3°C warmer world | Australian Academy of Science [2] Greater committed warming after accounting for the pattern effect | Nature Climate Change Authors and Affiliations – Rob Emanuele, Microsoft Track – Community / OSGeo Topic – FOSS4G for Sustainable Development Goals (SDG) Level – 1 - Principiants. No required specific knowledge is needed. Language of the Presentation – English
|
English
|
10.5446/57264 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Emanuele, Rob
| null |
FOSS4G based high frequency and interoperable lake water-quality monitoring system
|
https://av.tib.eu/media/57265
| null |
https://tib.flowcenter.de/mfc/medialink/3/dea6dbdff9c277808273a15c308ecee023b3236007e64b5b2746c3ac4451ede97ff5/FOSS4G_2021_-_FOSS4G_based_high_frequency_and_inte_oJ4vYATIGqk.mp4
|
2021
|
Computer Science
|
Conference/Talk
|
Lakes ecosystems are exposed to growing threats due to climate change and other anthropic pressures. For example, water warming is predicted to favour harmful algal blooms (HABs) that are toxic to peoples and animals. In addition, warming tends to increase the thermal stratification of lakes and reduce turnovers, which can lead to oxygen depletion in deep layers and release of toxic gases (methane, hydrogen sulphide) from sediments. Similarly, the increased use of plastics has produced nano- and micro-plastics pollution which, together with anthropogenic micropollutants, is posing a new emerging risk factor to lake biota. To effectively study and manage those issues, researchers and managers need monitoring data (observations) to derive effective data-driven management policies. Observations have traditionally been collected from limnological vessels through periodic (often monthly) monitoring campaigns, during which water samples are collected for further analyses in the laboratory and various measurements are performed using on-board instruments (e.g. CTD sonde measuring Conductivity, temperature and Depth or Secchi disk to observe turbidity). However, environmental issues including HABs and changes in lake stratification due to warming, call for a shift towards monitoring approaches that allows higher-frequency (e.g. hourly od daily) automatic collection of key water-quality properties (e.g. phytoplankton concentration, temperature, dissolved oxygen). Therefore, to match current challenges, leverage better phenomena understanding and activate proactive measures, monitoring systems have to be updated to provide a better temporal and spatial resolution. At the same time, this development should not increase the costs of monitoring, which are often a limiting factor in lake management. Authors and Affiliations – Massimiliano Cannata proffessor of geomatics at the Institue of Earth Science, SUPSI, Switzerland. Track – Academic Topic – Academic Level – 2 - Basic. General basic knowledge is required. Language of the Presentation – English
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English
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10.5446/57265 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
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Cannata, Massimiliano
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Sá, Narcélio de
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FOSS4G tools for data-driven decisions: Public transport services in the Buenos Aires Metropolitan Area.
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https://av.tib.eu/media/57266
| null |
https://tib.flowcenter.de/mfc/medialink/3/de695b94d1ace163f6d69f15e40663d39d5c5c20f5e5da0564b03519010646df3c23/FOSS4G_2021_-_FOSS4G_tools_for_data-driven_decisio_Y8dPDrIw1K8.mp4
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2021
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Computer Science
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Conference/Talk
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The Metropolitan Area of Buenos Aires is the third largest in Latin America, with millions commuters using public transport every day. As government officials we must make sense of the massive amounts of location data generated by our transport system. We used Apache Spark in combination with Geomesa in order to process over 100 million monthly GPS records from buses to create individual trajectories between terminals, infer direction of travel and derive meaningful performance indicators of transportation. We conclude that this is a great combination of tools to tackle big-geo and mobility problems of the kind expected in a big city government. Buenos Aires Metropolitan Area is home to more than 15 million people and the third largest in Latin America. In the last few years, the City Government has dedicated great resources to become an innovation leader in the region. As in most cities across the world, mobility and transportation are one of the most important aspects of life in the city with around 3.4 million daily users before the pandemic and around 2.4 million these days. As government officials, we face the challenge of making sense of the massive amount of location data generated by the public transport system. Achieving this allows us to propose and prioritize new projects, perform program impact assessments, make network and infrastructure changes, and ultimately to improve the life of citizens. In order to better understand mobility, we set ourselves to identify individual trajectories from bus GPS records. Buses are the most widespread mode of transport, and they are used in more than 90% of the total trips in the metropolitan area. We first approached this problem on a sample on a Postgres database, and quickly found that for our need of processing ~100M monthly records Postgis would not be enough. At that point, we turned to Apache Spark and Geomesa, a free and open-source suite of tools that allows geospatial analyses in a distributed fashion. We ingested GPS records into Spark and constructed point geometries from latitude and longitude attributes. We then partitioned the data using the bus line and individual vehicle, and calculated the differences in location and timestamp of each point relative to the previous one. We then applied spatially aware rules to identify the moment when a bus leaves or enters its corresponding terminal’s area of influence, and used them to define the beginning and end of individual bus trips. Using the terminal data, we were also able to infer the direction. Finally we created linestring geometries from all points belonging to the same trip. These trips geometries with its associated attributes were then exported into a spatial database in order to visually communicate and analyse our results. Starting from over 100M monthly GPS records, we identified ~1.5M individual bus trips, completed by more than 130 bus lines. Around 89% of records ended up as part of a trajectory and ~11% were discarded due to bad quality, or not meeting the criteria set to belong to a trajectory. With these individual trajectories we were able to produce key performance indicators of the bus transportation system and to encourage evidence-based decision-making inside the government. In conclusion, we can say that SparkSQL & Geomesa are a great combination of tools to tackle big-geo and mobility problems expected in a big city government. They enabled us to identify millions of bus trajectories, and derive useful KPIs to support data-driven decisions. Authors and Affiliations – Villarroel Torrez, Daniel (1) Armesto Brosio, Andrés (1) (1) Undersecretariat for Evidence-based Public Policy, Buenos Aires City Government. Track – Use cases & applications Topic – Government and Institutions Level – 3 - Medium. Advanced knowledge is recommended. Language of the Presentation – English
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English
|
10.5446/57266 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Armesto, Andrés
Villarroel Torrez, Daniel
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Emde, Astrid (Moderation)
|
GARBAL: An open GIS for livestock herders in Mali and Burkina Faso
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https://av.tib.eu/media/57267
| null |
https://tib.flowcenter.de/mfc/medialink/3/de61f917f453f89ef53aa374ccff23dcfad77bf7e72dcaf1967199b33fc6203e57/FOSS4G_2021_-_GARBAL__An_open_GIS_for_livestock_he_L_cklVYZ5-E.mp4
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2021
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Computer Science
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Conference/Talk
|
Livestock herders in Mali and Burkina Faso live under the twin threat of drought and armed conflict. Moving their herds to find pasture and water depends critically on access to reliable information. This talk discusses a call center that uses open Earth Observation imagery and field data to provide herders with information on pasture, water and market conditions. The talk will go over the architecture of the data treatment, demo the interface, talk about successes and failures and show how you can play with the data yourself. Transhumance, or the seasonal movements of livestock herds to find pasture and water, is a centuries-old tradition in Mali and Burkina Faso. The process of selecting routes for movement hinges on a complex network of factors including customary access rights, pasture growth, rainfall, surface water, among others. However, years of climate change and armed conflict have made herding more precarious and prone to rapid changes. As a result, access to data on environmental and market conditions is critical for pastoralists. While satellite imagery has made much of this information readily accessible to the spatial community, few channels exist to transmit this information to herding communities. In 2015, the GARBAL call center was built to provide this data to herders in Mali and Burkina Faso. The call center is powered by an open platform GIS built from remote sensing data on vegetation and water and field data on market prices and animal conditions. Herders calling the center are connected to an agent who uses dashboards to respond to their questions: Is pasture available near me? Is it crowded by other herds? Can I sell my goats for a good price? The call center’s goal is to provide herders with decision-making support in planning their routes. The interface is built on mapserver and uses automated scripts to download and treat Sentinel 2 satellite imagery which then display information on pasture conditions and water availability. Field data is routed through a network of local data collectors who provide weekly updates on livestock conditions and market prices. In addition to an interactive map, the interface provides user-friendly textual outputs that summarize all the layers for any area of interest on the map, which allows call center agents to quickly provide data to callers. This talk will share a number of the lessons learned from the STAMP project and provide a demonstration of the platform (which is openly accessible). Specific topics of discussion will include: The architecture of the system- what worked and what didn’t Maintaining regular field data collection in areas of ongoing active conflict Building and translating GIS data for communities with low literacy Examining the call records to see what data matters the most to users You can use the platform at www.stamp-map.org. For more information, contact Alex Orenstein ([email protected] / @oren_sa) Authors and Affiliations – Alex Orenstein, DaCarte (Dakar, Senegal) Track – Use cases & applications Topic – FOSS4G implementations in strategic application domains: land management, crisis/disaster response, smart cities, population mapping, climate change, ocean and marine monitoring, etc. Level – 1 - Principiants. No required specific knowledge is needed.
|
English
|
10.5446/57267 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Orenstein, Alex
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Emde, Astrid
|
Geoscan: spatial data country profile
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https://av.tib.eu/media/57269
| null |
https://tib.flowcenter.de/mfc/medialink/3/de24d257e63a27e14de2b68fe13549c0260f8c86fda26df6571c4d622af0d70e63/FOSS4G_2021_-_Geoscan__spatial_data_country_profil_YPVvM06dZIA.mp4
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2021
|
Computer Science
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Conference/Talk
|
For international development agencies, timely and accurate geospatial data is an essential tool for evidence-based decision-making. Yet gathering, analyzing, and presenting geospatial data is a complex and time-consuming activity that requires a specialized skill-set. This presentation shares the experience of an Innovation Challenge project implemented at the International Fund for Agricultural Development (IFAD) - a specialized UN agency and financial institution. The main goal was to minimize the time and knowledge required to gather and process a vast array of relevant geospatial layers, providing a standardized approach applicable to every country of operation in IFAD’s activities. This objective was achieved via the implementation of automation procedures using open source tools, which resulted in a reduction of the required processing time by a factor of 40 (from 2 weeks to 2 hours). GeoScan is based entirely on an open-source technological stack and uses the latest, verified data sources, providing various levels of users with different information products: automated pdf atlases, ready-to-use GIS data, metadata and web services, web applications, and an interactive user dashboard. The project included the following activities: Data needs evaluation, relevant to the international development sector and aligned with IFAD’s strategy in the agricultural environment in rural areas. Literature and data review to match the identified data needs. Data selection, validation, and detailed documentation on the selected geospatial layers. Data standardization and ontology with automated processing for data structuring, visualization, and statistics calculation. Preparation and generation of automated country reports and structuring the data in GIS data packages. Integration with the enterprise GIS infrastructure in IFAD. Development of interactive web GIS application and dashboard. The project made extensive use of QGIS, GDAL, Postgre/PostGIS, Geonode, Geoserver, and OpenLayers. The GeoScan application aims at standardizing the data collection and analysis workflow, providing a range of end products that have multiple uses in the international development environment. After an extensive data review, over 180 datasets from 28 data providers have been downloaded for local processing. The data providers include various organizations such as NASA, European Space Agency, European Commission Joint Research Center, FAO, as well as Open StreetMap, Google Earth Engine, and many others, depending on the various data theme needs. Following ISO19115 core theme requirements and ISO country codes, we have created a standardized naming convention for all data, enforced through an automated process. Data processing includes renaming, restructuring, clipping to the region of interest, statistics calculation, standardized visualization. Automation has been implemented in Python, leveraging the QGIS environment as needed, but an experimental dedicated QGIS plugin has been developed as well. To produce summary documents, we have used QGIS Atlas to generate automated pdf reports for all 37 countries of interest, each including about 175 maps. For offline usage and further processing, all data has been structured with proper metadata description, styles, and QGIS project for direct utilization by GIS professionals. The data and reports have been uploaded online to make them available through IFAD’s Geonode platform, which provides them in multiple forms: web service, web application, pdf report, and actual GIS data. A selected set of indicators is available through a custom-developed web GIS dashboard for the region of West and Central Africa. Authors and Affiliations – Lyubomir Filipov, GIS Consultant at the International Fund for Agricultural Development. Giuseppe Baiamonte, GIS Consultant at the International Fund for Agricultural Development. Track – Use cases & applications Topic – Data visualization: spatial analysis, manipulation and visualization Level – 1 - Principiants. No required specific knowledge is needed. Language of the Presentation – English
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English
|
10.5446/57269 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Filipov, Lyubo
Baiamonte, Giuseppe
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Terner, Michael (Moderation)
|
Google Summer of Code with OSGeo
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https://av.tib.eu/media/57270
| null |
https://tib.flowcenter.de/mfc/medialink/3/de232ba10cd66f9f5458f4e8ce40866e97ad550387d2348016643f193cca29e1d9/FOSS4G_2021_-_Google_Summer_of_Code_with_OSGeo_Flr1tcrcAvE.mp4
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2021
|
Computer Science
|
Conference/Talk
|
OSGeo's Google Summer of Code Initiative has been an inspiring and motivating platform for new student developers to join the OSGeo projects, community projects, guest projects, and incubating projects. In 2021, OSGeo is participating for the 15th year in the Google Summer of Code, and it itself is a great achievement. With this talk, the OSGeo GSoC Administrators shall try to put forth the importance of GSoC with respect to the students and participating projects. The admins would focus on the development of projects with GSoC and encourage projects to be a part of the upcoming GSoC. Over the years, OSGeo's Google Summer of Code initiative has transformed into an initiative full of contributions towards geospatial software development. In the last 15 years, many OSGeo projects comprising incubating projects, community projects, and guest projects have progressed attributed to the contributions of student developers. Some of these students continued to participate as contributors for the projects and went on to take mentoring and organizing responsibilities. This is a true sense of FOSS4G in terms of individual and collective growth of the student developers and the OSGeo community. In this talk, the OSGeo GSoC Admins team would try to appreciate the efforts of all the mentors and students involved till now and present the state of the GSoC 2021. The Admins would also present possibilities for new projects to be part of the GSoC with OSGeo as an umbrella organization. Authors and Affiliations – Rajat Shinde (1), Rahul Chauhan (2), Indian Institute of Technology Bombay, India (1) Track – Community / OSGeo Topic – Community & participatory FOSS4G Level – 1 - Principiants. No required specific knowledge is needed. Language of the Presentation – English
|
English
|
10.5446/57270 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Shinde, Rajat
|
Delucchi, Luca (Moderation)
|
HERMOSA: Supporting the UN decade on ecosystem restoration utilizing ..
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https://av.tib.eu/media/57271
| null |
https://tib.flowcenter.de/mfc/medialink/3/de6aaf1d8083f54ef57cb01bbe91d97648884f21818b1a6d754c2033bc0124b74b/FOSS4G_2021_-_HERMOSA__Supporting_the_UN_decade_on_e6q8Fo9j3-E.mp4
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2021
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Computer Science
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Conference/Talk
|
HERMOSA: Supporting the UN decade on ecosystem restoration utilizing geo- and earth observation technologies The United Nations declared 2021 to 2030 as Decade on Ecosystem Restoration [Verlinken: https://www.decadeonrestoration.org/ ] in the hope of being able to avert the worst effects and limit the heating of the planet to 1.5 °C in comparison to pre-industrial times. The companies mundialis and terrestris from Bonn, Germany are developing a digital, internet based platform supporting urgently needed ecosystem restoration efforts by utilizing geo- and earth observation technologies. The project is financed by the European Space Agency (ESA). The platform is called HERMOSA, an acronym for Holistic Ecosystem Restoration Monitoring, repOrting, Sharing and mArketplace. From a technical point of view, the platform makes use of SHOGun, an Open Source WebGIS framework that uses react-geo and OpenLayers on the clientside, and GeoServer, actinia and GRASS GIS on the server-side to name just a few. The platform helps registered users to analyze the efforts that organizations face on the ground when restoring ecosystems with a web-based geographical information system. Beside the WebGIS there are modules for on-demand and automatic analysis of Sentinel1 and 2 data, but also the use of very high resoluted (VHR) satellite images is possible. The analysis tools offer a change detection or a land cover classification for example. The main challenges we had to cope with is to deliver a user-friendly tool, that allows users to easily perform complex analysis and to support them in interpreting the results. We'll have a look at some of the decisions that were made in that respect. The talk will on the one hand focus on the technical base of the platform but we will also show some of the functionality from the users and from the developers perspective. I will also dedicate some time to the challenges arising when releasing such a platform under an Open Source software-license. Authors and Affiliations – Adams, Till (1) Paulsen, Hinrich (2) terrestris GmbH & Co KG (1) mundialis GmbH & Co KG (2) Germany Track – Use cases & applications Topic – FOSS4G implementations in strategic application domains: land management, crisis/disaster response, smart cities, population mapping, climate change, ocean and marine monitoring, etc. Level – 2 - Basic. General basic knowledge is required. Language of the Presentation – English
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English
|
10.5446/57271 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Paulsen, Hinrich
Adams, Till
|
Emde, Astrid (Moderation)
|
How Open Source saved the UK Economy £12Bn
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https://av.tib.eu/media/57272
| null |
https://tib.flowcenter.de/mfc/medialink/3/dee030524e8b776630b6f52189ee4c0eb1f759076f37b521dc68bd9deb137d6e33/FOSS4G_2021_-_How_Open_Source_saved_the_UK_Economy_kUPCGrTUDB8.mp4
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2021
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Computer Science
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Conference/Talk
|
The UN Global Platform was developed using open source and proprietary software to enable the production of economic indicators. Using GeoMesa, Kafka, GeoServer, Python and some analytics. An indicator of pending COVID doom was provided as an indicator the UK Treasury, Cabinet Office and Bank of England. This enabled savings of at least £12Bn for the UK economy. Post the 2008 financial crisis it was identified that AIS shipping location data was a good indicator of pending doom. The UN Global Platform developed a location analytics platform for analysing AIS and ADSB data in real-time. When the call came from the UK Government to ask what the impact of COVID-19 would have on the economy, the Platform use used to develop economic indicators of pending doom. Authors and Affiliations – Mark Craddock Co-Founder & CTO Global Certification and Training Ltd Previously, Director UN Global Platform Track – Use cases & applications Topic – Data collection, data sharing, data science, open data, big data, data exploitation platforms Level – 1 - Principiants. No required specific knowledge is needed. Language of the Presentation – English
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English
|
10.5446/57272 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Craddock, Mark
|
Unen, Can (Moderation)
|
I hated the way GRASS started so I changed it
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https://av.tib.eu/media/57274
| null |
https://tib.flowcenter.de/mfc/medialink/3/de62455a848e592511673749091fcb7e518e8f5d1d4e7599581728349e44129bec/FOSS4G_2021_-_I_hated_the_way_GRASS_started_so_I_c_pF0hrebqdtA.mp4
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2021
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Computer Science
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Conference/Talk
|
In the past, few people would have described GRASS GIS as intuitive. Therefore, it was even more surprising when I got this response from beginner students! Come and listen to a presentation talking about the new generation of GRASS GUI. You will be surprised by the intuitive start, convenient data organization, GRASS in dark theme mode, and many other pleasant functions which me and the development team have prepared for you. Stay tuned! This talk will highlight the major improvements of the GRASS GUI in version 8 which is much more user-friendly to existing users as well as to completely new ones. Authors and Affiliations – Linda Kladivova (1) Vaclav Petras (2) Anna Petrasova (2) The GRASS GIS Development Team (3) (1) Faculty of Civil Engineering, Czech Technical University in Prague, Czech Republic (2) Center for Geospatial Analytics, North Carolina State University, USA (3) Global Track – Software Topic – Software status / state of the art Level – 1 - Principiants. No required specific knowledge is needed. Language of the Presentation – English
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English
|
10.5446/57274 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Kladivova, Linda
|
Raez, Joshi (Moderation)
|
Iaso: all-in-one platform for data collection and geographical registry
|
https://av.tib.eu/media/57275
| null |
https://tib.flowcenter.de/mfc/medialink/3/de3504af8750f73439866dd84e0d92cb77155c5c9da637ded1cb7de1cf81b943c49c/FOSS4G_2021_-_Iaso__all-in-one_platform_for_data_c_J13gIn4sHXs.mp4
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2021
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Computer Science
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Conference/Talk
|
Iaso is a platform created to support geo-rich data collection efforts, mainly in public health in emerging countries. The key feature that it supports is that any survey is linked to an organizational unit that is part of a canonical hierarchy. Each one of these org. units can have a location and a territory. The mobile data collection tool can be used to enrich this hierarchy with additional GPS coordinates, names corrections, etc ... which can then be validated by officials of the organizations in question through the web dashboard (this is consequently similar in some aspects to OpenStreetMap, but with validation before integration in the reference dataset). This leads to continuous improvements of the geographic references available through the routine activities already planned (e.g. locating and registering health facilities while investigating malaria cases). The tool has been used in multiple data collection efforts, notably in health services in D.R. Congo, Niger, Cameroon, Mali and Nigeria and is more and more used to compare multiple versions of official organisational hierarchies when a canonical one needs to be rebuilt. We are for example working on such efforts to rebuild a school map for DRC with the NGO Cordaid. To help for this type of project, we provide location selection interfaces, multiple levels of audits and an API open to data scientists for analysis and mass edits. This presentation will demo the main features of the platform, and give some context about its creation. Iaso has been created by the company Bluesquare (https://bluesquarehub.com/, based in Belgium), specialised in software and services for public health, and has become open source under the MIT License in November 2020. It is still under heavy development, but is already the basis of at least a dozen projects. On the roadmap, we have features for a patient registry, monitoring tools for data collectors, and microplanning activities (producing routes for monitoring teams, or vaccination teams). Iaso is made of a white labeled Android application using Java/Kotlin and reusing large parts of the ODK projects and a web platform programmed using Python/GeoDjango on top of PostGIS. Frontend is mainly React/Leaflet. One of the aims is the ease of integration with other platforms. We already have csv and geopackage imports and exports and target easy integration with OSM. You can find the platform and its documentation here https://github.com/BLSQ/iaso The mobile application is available here https://play.google.com/store/apps/details?id=org.bluesquarehub.iaso.demo Authors and Affiliations – Martin De Wulf, Bluesquare. Track – Software Topic – FOSS4G for Sustainable Development Goals (SDG) Level – 2 - Basic. General basic knowledge is required. Language of the Presentation – English
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English
|
10.5446/57275 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Wulf, Martin de
| null |
Lizmap to create a Web Map Application with QGIS Desktop and Server
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https://av.tib.eu/media/57276
| null |
https://tib.flowcenter.de/mfc/medialink/3/de243ce5a3d0ad01943af04503f0f2a990923b4d223ce1920cb47c35f8b236dc90/FOSS4G_2021_-_Lizmap_to_create_a_Web_Map_Applicati_NIgFgkyBRts.mp4
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2021
|
Computer Science
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Conference/Talk
|
In 2021, Lizmap is 10 years old. Lizmap is an Open Source application to create web map applications, based on a QGIS project. It's composed of a QGIS plugin and a Web Client. Lizmap has been designed to take advantage of QGIS Server to facilitate the creation of Web maps. We will present the state of the project, the last changes using on a QGIS Server plugin and futur perspectives. At 3Liz, we are QGIS and PostGIS lovers. We are contributors of QGIS, mainly QGIS Server. We promote Open Source GIS solutions, mainly OSGeo, to our customers. In 2011, we decided to develop, as an Open Source Software, the Lizmap solution. The design of Lizmap aimed to publish Web Mapping applications with QGIS. The objective of Lizmap is to design and configure web mapping applications with QGIS desktop and only with it. No coding skills are needed. Lizmap takes full advantages of QGIS Server: symbology, labels, table relationships, print layouts, forms, etc. Lizmap consists of 2 tools: * Lizmap plugin allows to configure the options and tools of the web mapping application based on the QGIS project * Lizmap Web Client, running on a server with QGIS Server, delivers the user interface of the web mapping application from the QGIS project and the Lizmap configuration. Lizmap offers the possibility to publish simple web mapping applications for data consultation, but also to build advanced applications allowing map printing, data editing, search, dataviz, etc. Lizmap is also extensible. It is possible to add your own JavaScript and to use Lizmap modules (to add some extra features on top of Lizmap). Finally, Lizmap benefits from a growing community (localizations, documentation, JavaScripts, bug triaging, etc) and it is used all over the world (Indian ocean environment survey, Georice in South-East Asia, SAERI in South Atlantic, etc). Authors and Affiliations – René-Luc DHONT (3liz), Michaël DOUCHIN (3liz) Track – Software Topic – Software status / state of the art Level – 1 - Principiants. No required specific knowledge is needed. Language of the Presentation – English
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English
|
10.5446/57276 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
DHONT, René-Luc
|
Terner, Michael (Moderation)
|
Maritime Big Data analysis with ARLAS
|
https://av.tib.eu/media/57277
| null |
https://tib.flowcenter.de/mfc/medialink/3/de1ddd7563b21a063a9efafaf5ca176d7ba048c1344af8476e4950beac4992b14a/FOSS4G_2021_-_Maritime_Big_Data_analysis_with_ARLA_SsK9C2Sk2xk.mp4
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2021
|
Computer Science
|
Conference/Talk
|
The maritime industry has become a major catalyst of globalisation. Political and economic actors meet various challenges regarding cargo shipping, fishing, and passenger transport. The Automatic Identification System (AIS) records and broadcasts the location of numerous vessels which supplies huge amounts of information that can be used to analyse fluxes and their behavior. However, the exploitation of these numerous messages requires tools adapted to Big Data. Acknowledgment of origin, destination, travel duration, and distance of each vessel can help transporters to manage their fleet and ports to analyse fluxes and track specific containers based on their previous locations. Thanks to the historical AIS messages provided by the Danish Maritime Authority and ARLAS PROC/ML, Gisaïa’s open-source and scalable processing platform based on Apache SPARK, we are able to apply our pipeline of processes and extract this information from the millions of AIS messages. We use a Hidden Markov Model (HMM) to identify when a vessel is still or moving and we create “courses”, embodying the travel of the vessel. Then we can derive the travel indicators. Authors and Affiliations – GAUTIER, Willi (1) Data science Department, Gisaïa, France, GAUDAN, Sylvain (2) Chief Technical Officer, Gisaïa, France FALQUIER, Sébastien (3), Data science Department, Gisaïa, France Track – Academic Topic – Academic Level – 2 - Basic. General basic knowledge is required. Language of the Presentation – English
|
English
|
10.5446/57277 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Gautier, Willi
|
Sá, Narcélio de (Moderation)
|
Natural Catastrophe Response Requires Friendly Tools & SAR Imagery
|
https://av.tib.eu/media/57278
| null |
https://tib.flowcenter.de/mfc/medialink/3/dee524ba9743c47e6729c2155091dbb8730512443cfed591e0546fc86702f439e6/FOSS4G_2021_-_Natural_Catastrophe_Response_Require_kwQLxZayepo.mp4
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2021
|
Computer Science
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Conference/Talk
|
Climate change has immediate and observable impacts on Earth. The increase in natural catastrophes and our lack of community and global readiness is apparent. Commercial, affordable SAR constellations will result in the decentralization of Earth observation, improving natural catastrophe responsiveness, resilience, and broader community engagement. SAR sensors, with the ability to observe the Earth in ways entirely inaccessible by optical and infrared sensors, present a unique capacity to quantify catastrophic impact and plan for future improvement. But SAR imagery alone is not enough: the high resolution, coherence, and frequency of revisit are only as good as the tooling shared to facilitate insights and actions. Many tools are currently available, but can also be a challenge to scale with modern cloud resources as they are often developed by scientists for scientists or locked in classified government environments. What types of open source tools are required for sustainable solution development with SAR and how can we improve existing open source contributions as we exponentially collect imagery? How can we liberate knowledge often owned only by SAR experts? In this talk, we will discuss natural catastrophe solution development at ICEYE with high temporal and spatial resolution SAR and how we overcome the challenges through partnerships such as with ESA Phi-Lab and the ESA Third Party Mission (TPM) program. Authors and Affiliations – Strong, Shay ICEYE, Finland Track – Use cases & applications Topic – Data collection, data sharing, data science, open data, big data, data exploitation platforms Level – 1 - Principiants. No required specific knowledge is needed. Language of the Presentation – English
|
English
|
10.5446/57278 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Strong, Shay
|
Emanuele, Rob (Moderation)
|
News from actinia
|
https://av.tib.eu/media/57279
| null |
https://tib.flowcenter.de/mfc/medialink/3/de83230c504e523e5324575e1e32219616f85f0631e089636d95671c6dfe9f019a/FOSS4G_2021_-_News_from_actinia_JopHVkK5Kfo.mp4
|
2021
|
Computer Science
|
Conference/Talk
|
„Hello, my name is actinia. Some of you might know me already. I became an OSGeo Community Project in 2019 and my first appearance on a FOSS4G conference was in 2018 where I was presented in a talk. For those of you who do not know me yet - I have been developed to exploit GRASS GIS functionality via an HTTPS REST API with which GRASS locations, mapsets and spatio-temporal data are available as resources to allow their management and visualization. I was designed to follow the purpose of bringing algorithms to cloud geodata, the daily growing big geodata pools in mind. I can be installed in a cloud environment, helping to prepare, analyse and provide a large amount of geoinformation. But also for those who do know me already - do you know the details about what happened the last 2 years? A lot! Usage of interim results, helm chart, enhanced exporter, monitoring of mapset size, QA enhancements and a split of my plugins including module self-description of more than 500 modules are some key words to just name a few. With the ongoing development of the openeo-grassgis-driver, you can talk to me either in my native language or via openEO API. I would also like to tell you some interesting facts about me interacting in different projects. So come on over!“ „Hello, my name is actinia. Some of you might know me already. I became an OSGeo Community Project in 2019 and my first appearance on a FOSS4G conference was in 2018 where I was presented in a talk. For those of you who do not know me yet - I have been developed to exploit GRASS GIS functionality via an HTTPS REST API with which GRASS locations, mapsets and spatio-temporal data are available as resources to allow their management and visualization. I was designed to follow the purpose of bringing algorithms to cloud geodata, the daily growing big geodata pools in mind. I can be installed in a cloud environment, helping to prepare, analyse and provide a large amount of geoinformation. But also for those who do know me already - do you know the details about what happened the last 2 years? A lot! Usage of interim results, helm chart, enhanced exporter, monitoring of mapset size, QA enhancements and a split of my plugins including module self-description of more than 500 modules are some key words to just name a few. With the ongoing development of the openeo-grassgis-driver, you can talk to me either in my native language or via openEO API. I would also like to tell you some interesting facts about me interacting in different projects. So come on over!“ Authors and Affiliations – Tawalika, Carmen (1), Neteler, Markus (1), Weinmann, Anika (1), Riembauer, Guido (1) (1) mundialis GmbH & Co. KG, Bonn, Germany (https://www.mundialis.de/) Track – Software Topic – Software status / state of the art Level – 1 - Principiants. No required specific knowledge is needed. Language of the Presentation – English
|
English
|
10.5446/57279 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Tawalika, Carmen
| null |
One Geonode, many Geonodes
|
https://av.tib.eu/media/57280
| null |
https://tib.flowcenter.de/mfc/medialink/3/dedf6686a6556cf9ae6db392105c5c8cbe64d14f3c5054f005b9c79c25dbd6be14e4/FOSS4G_2021_-_One_Geonode__many_Geonodes_bvZg4I8DHY8.mp4
|
2021
|
Computer Science
|
Conference/Talk
|
GeoSolutions has been involved in a number of projects, ranging from local administrations to global institutions, involving GeoNode deployments, customizations and enhancements. A gallery of projects and use cases will showcase the versatility and effectiveness of GeoNode, both as a standalone application and as a service component, for building secured geodata catalogs and web mapping services. GeoNode is a Web Spatial Content Management System based entirely on Open Source tools whose purpose is to promote the sharing of data and their management in a simple environment where even non-expert users of GIS technologies can view, edit, manage, and share spatial data, maps, prints, and documents attached. GeoNode was initiated in 2009 by the World Bank and OpenGeo but from 2011 is entirely run by the developer community that the project has been able to attract. It claims some large organizations among its contributors such as the United Nations, the World Bank and the European Commission as well as many NGOs and private companies. GeoNode is based on a set of robust and widespread open source components as Django as a basic framework, GeoServer for geospatial data management and OGC services and MapStore as mapping application. It can also communicate with PostgreSQL for vector data management. GeoSolutions has been involved in a number of projects, ranging from local administrations to global institutions, involving GeoNode deployments, customizations and enhancements. A gallery of projects and use cases will showcase the versatility and effectiveness of GeoNode, both as a standalone application and as a service component, for building secured geodata catalogs and web mapping services. Lastly, ongoing and future developments will be presented ranging from the upcoming integration with MapStore to the monitoring and analytics dashboard or the support for time series data. Authors and Affiliations – [email protected] [email protected] Track – Use cases & applications Topic – Software/Project development Level – 1 - Principiants. No required specific knowledge is needed. Language of the Presentation – English
|
English
|
10.5446/57280 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Allegri, Giovanni
Fabiani, Allessio
| null |
Optimized publishing of map and dataservices with GeoServer, GeoStyler and MapProxy
|
https://av.tib.eu/media/57281
| null |
https://tib.flowcenter.de/mfc/medialink/3/de701fb2bd79b39567633a04ab0805e55c5c512fbf63275c3068d0f9e0c447358ce991/FOSS4G_2021_-_Optimized_publishing_of_map_and_data_wg76zGQhgZY.mp4
|
2021
|
Computer Science
|
Conference/Talk
|
At the beginning of this century, the very existence of geo-services based on an uniform API like WMS aroused admiration. Today, having more than 10 years of INSPIRE behind us, this question often no longer arises. With software-projects like UMN MapServer, GeoServer, deegree or QGIS Server – to name just a few – there are notable solutions that can be used to transform geodata into standardized services. Once your data is published as WMS (or WFS, e.g.), one can rely on many additional tools, functions and interfaces. Thus a non-experienced user is confronted with many tools but also with the question on which tools can be used to achieve an optimal result for his or her personal task. The talk presents one Open Source toolset for the set-up of geodata-services that consists of GeoServer/GeoWebCache, GeoStyler and MapProxy. In my talk I will present one rock-solid possible solution for the setting-up of high-performance geodata-services. The presented solution has proved its usability and is the base for the world wide open and widely used OpenStreetMap basemap-service „ows.terrestris.de“. The talk focusses on the OSGeo project GeoServer but will also present the OSGeo Community Projects GeoStyler and MapProxy. The solution is vividly presented by means of a few examples and the talk is peppered with some hints on styling, performance tuning and caching of services. Authors and Affiliations – Adams, Till Jansen, Marc terrestris GmbH & Co KG Germany Track – Use cases & applications Topic – Data visualization: spatial analysis, manipulation and visualization Level – 1 - Principiants. No required specific knowledge is needed. Language of the Presentation – English
|
English
|
10.5446/57281 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Jansen, Marc
Adams, Till
|
N. N. (Moderation)
|
OSGeoLive project report
|
https://av.tib.eu/media/57282
| null |
https://tib.flowcenter.de/mfc/medialink/3/de3cb93c08cd0774c791e40db8a5a8385f8d28a53c45c4376f40b0b482919b6888/FOSS4G_2021_-_OSGeoLive_project_report_IaBc_WBjU6w.mp4
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2021
|
Computer Science
|
Conference/Talk
|
OSGeoLive is a self-contained bootable DVD, USB thumb drive or Virtual Machine based on Lubuntu, that allows you to try a wide variety of open source geospatial software without installing anything. It is composed entirely of free software, allowing it to be freely distributed, duplicated and passed around. It provides pre-configured applications for a range of geospatial use cases, including storage, publishing, viewing, analysis and manipulation of data. It also contains sample datasets and documentation. OSGeoLive is an OSGeo project used in several workshops at FOSS4Gs around the world. https://live.osgeo.org The OSGeoLive project has consistently and sustainably been attracting contributions from ~ 50 projects for over a decade. Why has it been successful? What has attracted hundreds of diverse people to contribute to this project? How are technology changes affecting OSGeoLive, and by extension, the greater OSGeo ecosystem? Where is OSGeoLive heading and what are the challenges and opportunities for the future? How is the project steering committee operating? In this presentation we will cover current roadmap, opportunities and challenges, and why people are using OSGeoLive. https://live.osgeo.org Authors and Affiliations – Tzotsos, Angelos (1) Emde, Astrid (1) (1) Open Source Geospatial Foundation Track – Software Topic – Software status / state of the art Level – 1 - Principiants. No required specific knowledge is needed. Language of the Presentation – English
|
English
|
10.5446/57282 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Tzotsos, Angelos
Emde, Astrid
Roelandt, Nicolas
|
Kralidis, Tom (Moderation)
|
Professional multi-user editing with gvSIG Desktop
|
https://av.tib.eu/media/57283
| null |
https://tib.flowcenter.de/mfc/medialink/3/de1fb17f83f9c0303247999788e4cf554cd89bcde5d112280de13962baa9b39fad/FOSS4G_2021_-_Professional_multi-user_editing_with_kXYuR7X7VPc.mp4
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2021
|
Computer Science
|
Conference/Talk
|
During this presentation, the participants will discover the new version control system and advanced editing tools that have been developed for gvSIG Desktop. With the new version control system, users will be able to edit vector layers and recover the situation of the geometries in a concrete time, very useful for some projects such as the vertical and horizontal sign management on a road or in a municipality. In addition, several advanced editing tools have been included in gvSIG, in order to increase the potential of vector editing. The version control system is a new powerful tool that has been developed for gvSIG Desktop. It is based on the centralization of information to be shared between users, and unlike a normal server, it remembers the changes that have been made to their data. It should be noted that it doesn't store only information, but also the information as well as the modifications users make on it. Apart from the version control system, the last version of gvSIG Desktop includes not only new functionalities for advanced editing but also improvements in the existing tools that have increased the potential of the application. The most outstanding novelty is the new expression manager that has been applied to the filter tool, the field calculator or the editing tools, allowing the selection of elements or the fill in of registers on the table based on geoprocessing tools. Authors and Affiliations – Mario Carrera. gvSIG Association Matéo Boudon. gvSIG Association Track – Software Topic – Software status / state of the art Level – 2 - Basic. General basic knowledge is required.
|
English
|
10.5446/57283 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Carrera, Mario
Boudon, Matéo
| null |
QGIS Plugin Development Is Not Scary: Lessons Learned from Literature Mapper
|
https://av.tib.eu/media/57284
| null |
https://tib.flowcenter.de/mfc/medialink/3/de9bdee94569b6baf41184d927c7622cee366cf8d32bef9f52739d8265591a81a8/FOSS4G_2021_-_QGIS_Plugin_Development_Is_Not_Scary_VCfQoX5n4Eg.mp4
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2021
|
Computer Science
|
Conference/Talk
|
This is the story of how one QGIS plugin came to be and the lessons we learned along the way. The Literature Mapper QGIS Plugin was created to fill a need: academic journal articles are often about a specific location (this is common in fields such as ecology, archaeology, and history), but there was no method for connecting location data to a citation manager. We built the tool we needed from the idea stage (a paper map hand annotated in pencil), to prototype, to freely available code in the QGIS Plugin repository, to a tool that is steadily gaining users. In this talk, we will describe our experience developing the Literature Mapper QGIS plugin – all the ups and downs – to explain the process and encourage more people to try making their own plugin. Michele Tobias and Alex Mandel both hold PhDs in Geography and have worked in the geospatial field for 20 years, mainly working with open source tools. Both are active members of OSGeo. This goal of this talk is not only to give people practical skills and advice, but also to offer encouragement to folks who just need a little boost to try something new. Authors and Affiliations – Tobias, Michele (1) Mandel, Alex (2) (1) University of California, Davis - UC Davis DataLab (2) Development Seed Requirements for the Attendees – Documentation: http://micheletobias.github.io/maps/LiteratureMapper.html Repository: https://github.com/MicheleTobias/LiteratureMapper Academic Publication: https://journals.sagepub.com/doi/full/10.1177/11786221211009209 Track – Software Topic – Data collection, data sharing, data science, open data, big data, data exploitation platforms Level – 2 - Basic. General basic knowledge is required.
|
English
|
10.5446/57284 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Tobias, Michele
Mandel, Alex
|
Bryant, John (Moderation)
|
Serious tech for non-serious maps
|
https://av.tib.eu/media/57285
| null |
https://tib.flowcenter.de/mfc/medialink/3/de0441e6ca678fb541ea984ed298d3bbbd1f2c992056358a88cb591d0898872ce8/FOSS4G_2021_-_Serious_tech_for_non-serious_maps_x0CmGSx-8vk.mp4
|
2021
|
Computer Science
|
Conference/Talk
|
Open Fantasy Map uses the technology stack of Open History Map to store data about fantasy worlds for role players to live their adventures in the best ways possible. The platform displays fantasy maps created via generative algorythms as well as digitized maps by artists. This also enables, thanks to the OHM technologies, to "fork" the world and have the players impacting and changing their world. Open Fantasy Map uses the technology of Open History Map to store data about fantasy worlds for role players to live their adventures in the best ways possible. The platform displays fantasy maps created in several waysa: On one hand it uses generative algorythms to create continents, countries, cities, streets, biomes, and many other elements for the players to interact with and to manage. On the other hand, it uses the tools created for Open History Map to digitize ancient maps to help artists digitize their own modern productions in order to make these maps interactively available to the players. The OHM technology stack enables also th eforking of the world into several different situations where the players can impact their own sections of the world. We want to share the experience in creating both the genrative algorythms as well as the platform. Authors and Affiliations – Montanari, Marco (1) Gigli, Lorenzo (2) , Taddia, Luca (3) (1) Open History Map (2) University of Bologna (3) Just Play Bologna Track – Use cases & applications Topic – Data collection, data sharing, data science, open data, big data, data exploitation platforms Level – 3 - Medium. Advanced knowledge is recommended. Language of the Presentation – English
|
English
|
10.5446/57285 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Montanari, Marco
|
Joshi, Raez (Moderation)
|
State of GeoServer
|
https://av.tib.eu/media/57287
| null |
https://tib.flowcenter.de/mfc/medialink/3/ded030b7b7a9b0ac9b2420573450d2941c5455db12bde754e6bee394750df6ca45/FOSS4G_2021_-_State_of_GeoServer_S_HnCuYfQcQ.mp4
|
2021
|
Computer Science
|
Conference/Talk
|
This presentation provides an update on our community as well as reviews of the new and noteworthy features for the latest releases. Attend this talk for a cheerful update on what is happening with this popular OSGeo project, whether you are an expert user, a developer, or simply curious what GeoServer can do for you. GeoServer is a web service for publishing your geospatial data using industry standards for vector, raster and mapping. It powers a number of open source projects like GeoNode and geOrchestra and it is widely used throughout the world by organizations to manage and disseminate data at scale. This presentation provides an update on our community as well as reviews of the new and noteworthy features for the latest releases. This year in particular we have a lot to cover for 2.18 and 2.19 releases, as well as a preview of the September 2.20 release. Attend this talk for a cheerful update on what is happening with this popular OSGeo project, whether you are an expert user, a developer, or simply curious what GeoServer can do for you. Authors and Affiliations – Andrea Aime (1) Jody Garnett (2) (1) https://www.geosolutionsgroup.com/ (2) https://www.geocat.net/ Track – Software Topic – Software status / state of the art Level – 2 - Basic. General basic knowledge is required.
|
English
|
10.5446/57287 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Aime, Andrea
Garnett, Jody
| null |
State of MapServer 2021
|
https://av.tib.eu/media/57288
| null |
https://tib.flowcenter.de/mfc/medialink/3/de9901ccce19c8796705ae832c3166f9d260535a30c425263aad14a83dd68cc7ed/FOSS4G_2021_-_State_of_MapServer_me5UyqG03Pg.mp4
|
2021
|
Computer Science
|
Conference/Talk
|
MapServer is an OSGeo project for publishing spatial data and interactive mapping applications to the web [1]. 2021 will see the 8.0 release of MapServer [2]. An overview of the performance boosts, security updates, code quality improvements, and new features such as an initial OGC API implementation, and PROJ 6+ support. An update will be given on the MapServer ecosystem - including new sites from the MapServer gallery, related projects such as MapCache [3], and the various distribution channels. Finally we'll look at how to become a part of the MapServer community and help with the continued success of the project. [1] https://mapserver.org/ [2] https://github.com/mapserver/mapserver/wiki/MapServer-8.0-Release-Plan [3] https://mapserver.org/mapcache/ The MapServer PSC will be working towards providing the MapServer user base with an annual update on project news and developments. Content covered in Abstract above. Authors and Affiliations – Girvin, Seth (1) MapServer PSC (2) Track – Software Topic – Software status / state of the art Level – 1 - Principiants. No required specific knowledge is needed.
|
English
|
10.5446/57288 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Girvin, Seth
| null |
Supporting forest climate adaptation planning with point cloud analytics ...
|
https://av.tib.eu/media/57289
| null |
https://tib.flowcenter.de/mfc/medialink/3/dea0913c2c3f38f995a041f60fb2f50e684f592c24f0a9c7abc2db0354a97ce4ff/FOSS4G_2021_-_Supporting_forest_climate_adaptation__mtvcqSQ1Y0.mp4
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2021
|
Computer Science
|
Conference/Talk
|
Supporting forest climate adaptation planning with point cloud analytics for nontraditional geospatial users In fire adapted forests, three dimensional structural characteristics are critical factors in drought and fire resilience. Public point cloud repositories such as the USGS 3DEP program, Opentopography.org, and in the future the Earth Archive, are critical data infrastructure for climate adaptation planning. As we collectively face escalating climate hazards, the value in deploying operational geospatial tools for managing risk grows. Historical forest management in the Western United States has resulted in declining resilience. To stabilize above ground carbon pools and secure critical ecosystem services, the State of California and the US Forest Service have committed to treating 400,000 hectares of forest per year through 2030. These typically involve strategic mechanical thinning coupled with application of beneficial low to moderate intensity fire. These programs are often planned and implemented through shared stewardship agreements between government agencies and implementation partners from nongovernmental organizations, First Nations governments, and local jurisdictions. Large government land managers and industrial forest operators have typically used commercial enterprise geospatial software for data driven decision support. Software licensing restrictions create arbitrary barriers between partners. The proliferation of nontraditional climate planners and the need for long term reproducible data science products have created an important opportunity for the FOSS4G community. The California Forest Lidar Collaborative has been providing technical support and training to a diverse user community to apply point cloud analytics to a broad range of forestry problems. This program has facilitated the adoption of data science pipelines using Python, R, PDAL, GDAL, GRASS, and QGIS. This results in transparent environmental compliance processes, democratization of climate adaptation planning, reproducible forest data science workflows and increased diffusion of best-in-class geospatial tools. In fire adapted forests, three dimensional structural characteristics are critical factors in drought and fire resilience. Public point cloud repositories such as the USGS 3DEP program, Opentopography.org, and in the future the Earth Archive, are critical data infrastructure for climate adaptation planning. As we collectively face escalating climate hazards, the value in deploying operational geospatial tools for managing risk grows. Historical forest management in the Western United States has resulted in declining resilience. To stabilize above ground carbon pools and secure critical ecosystem services, the State of California and the US Forest Service have committed to treating 400,000 hectares of forest per year through 2030. These typically involve strategic mechanical thinning coupled with application of beneficial low to moderate intensity fire. These programs are often planned and implemented through shared stewardship agreements between government agencies and implementation partners from nongovernmental organizations, First Nations governments, and local jurisdictions. Large government land managers and industrial forest operators have typically used commercial enterprise geospatial software for data driven decision support. Software licensing restrictions create arbitrary barriers between partners. The proliferation of nontraditional climate planners and the need for long term reproducible data science products have created an important opportunity for the FOSS4G community. The California Forest Lidar Collaborative has been providing technical support and training to a diverse user community to apply point cloud analytics to a broad range of forestry problems. This program has facilitated the adoption of data science pipelines using Python, R, PDAL, GDAL, GRASS, and QGIS. This results in transparent environmental compliance processes, democratization of climate adaptation planning, reproducible forest data science workflows and increased diffusion of best-in-class geospatial tools. Authors and Affiliations – Tim Bailey Watershed Research and Training Center Track – Use cases & applications Topic – FOSS4G for Sustainable Development Goals (SDG) Level – 1 - Principiants. No required specific knowledge is needed. Language of the Presentation – English
|
English
|
10.5446/57289 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Bailey, Tim
|
Emanuele, Rob (Moderation)
|
The Borked Supply Chain. How the Telekom brings FOSS Projects into Stable Production
|
https://av.tib.eu/media/57290
| null |
https://tib.flowcenter.de/mfc/medialink/3/de9ae648ab98c12da8adc9ec88eb850e88b9837f3c91ad45da07a395a65540c741/FOSS4G_2021_-_The_Borked_Supply_Chain__How_the_Tel_7CGs7EmxBj4.mp4
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2021
|
Computer Science
|
Conference/Talk
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This talk focuses on aspects of transitioning Open Source software projects into productive environments. The Deutsche Telekom AG has set out to use FOSS software to build a comprehensive geospatial data management and processing environment based on cloud technology. Some components (like PostGIS and QGIS) are used as COTS (commercial off the shelf) products. Others (like GRASS GIS) are used as libraries to implement intricate parts of an incredibly specific process to dig optimized trenches for fiber optics cables throughout Germany. The project uses agile methods to implement this architecture with FOSS products and projects and hand crafted implementations to achieve it's objectives. If we use the analogy of a bridge across a deep valley to achieve the objectives, then it feels like going full speed on a downhill bike, jumping into thin air and reaching the other side of the valley in a truck carrying internet access for millions landing on a concrete bridge that has manifested halfway through. A bit frightening, but so cool! That's FOSS! Before going into implementation details we have to clarify some terminology: In the physical world, a project is planned for a specified time with a specified budget and clearly defined objectives. Think: building a bridge. It will be unique because it spans across a specific valley and has to account for a specific geology and specific use (people, donkeys, cars, trucks, trains or electrons). Building the bridge will require a plan, excavators, trucks, steel, concrete, asphalt, cables and so on. When the project is "done" people, goods and electrons can cross the bridge: Even donkeys can use it. Another example for the same terminology in a different context is the process of making a new car. This will start with a project focused on achieving the objective of making a new car. Once the car has become a reality, the project ends. The product itself gets reproduced (and sold) as often as possible to allow people to drive across the bridge which was the end product of another project. In the FOSS realm things are a Megabit different. A FOSS software project is an ongoing effort to create software, typically by a diverse and sustainable developer community. Some projects have been around for decades (think GRASS GIS). They are never "done". Others stick around for a few years while they are needed and then either get outdated or replaced by a contender (see Community MapBuilder a good decade ago). In general, when it gets started, there is no predefined end to a software project. Sometimes the founder of a software don't even know that they are founding a software (think Gary Sherman writing the first lines of what today is better known as QGIS). Sometimes Open Source software projects become part of a product. This typically happens in a downstream effort by a completely different set of actors (think Google's Kubernetes turning into the core of RedHat's Openshift). When it comes to combining all of these realms within a project aiming at achieving an objective by using FOSS software projects – things can really become a bit confusing. Hopefully we are going to be able to clarify a few things as we go through our presentation(s). Authors and Affiliations – Arnulf Christl, Metaspatial Senior Consultant, terrestris GmbH & Co. Kg., Germany Track – Use cases & applications Topic – Business powered by FOSS4G Level – 2 - Basic. General basic knowledge is required. Language of the Presentation – English
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English
|
10.5446/57290 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Christl, Arnulf
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Emde, Astrid (Moderation)
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The state of GeoExt along with an outlook on its future
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https://av.tib.eu/media/57291
| null |
https://tib.flowcenter.de/mfc/medialink/3/dea913da4b50862b5b23bac26d578e079d58dbb8441171440a0be42e84ab57f17d/FOSS4G_2021_-_The_state_of_GeoExt_along_with_an_ou_NetD2yNRz4c.mp4
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2021
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Computer Science
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Conference/Talk
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GeoExt is a JavaScript library combining the OpenLayers mapping library and the JavaScript framework ExtJS. It became an OSGeo community project in 2019. The talk will give a brief history of the project, and a summary of its dependencies and versions. Several new features recently developed for the latest GeoExt release will be presented. The talk will include an overview of two additional Open Source JavaScript libraries which bring even more power and functionality to GeoExt: BasiGX and GeoStyler. BasiGX is a higher-level JavaScript library that builds on top of GeoExt and focusses on advanced GIS user interfaces and mapping tools for the web. GeoStyler – in itself an OSGeo community project – is a JavaScript library for cartographic styling of geodata, and can be combined with a GeoExt solution to apply several formats to layers, e.g. SLD (Styled Layer Descriptor) files. The talk will include examples of real-world projects using GeoExt, along with recommendations on what types of projects are most suitable to be developed using GeoExt and its associated technologies. We'll discuss how and when newer OpenLayers and ExtJS versions will be supported, and how to combine GeoExt with other JavaScript packages. Finally a roadmap for the future of GeoExt will be outlined along with how developers and users can get involved. GeoExt is a JavaScript library combining the OpenLayers mapping library and the JavaScript framework ExtJS. It became an OSGeo community project in 2019. The talk will give a brief history of the project, and a summary of its dependencies and versions. Several new features recently developed for the latest GeoExt release will be presented. The talk will include an overview of two additional Open Source JavaScript libraries which bring even more power and functionality to GeoExt: BasiGX and GeoStyler. BasiGX is a higher-level JavaScript library that builds on top of GeoExt and focusses on advanced GIS user interfaces and mapping tools for the web. GeoStyler – in itself an OSGeo community project – is a JavaScript library for cartographic styling of geodata, and can be combined with a GeoExt solution to apply several formats to layers, e.g. SLD (Styled Layer Descriptor) files. The talk will include examples of real-world projects using GeoExt, along with recommendations on what types of projects are most suitable to be developed using GeoExt and its associated technologies. We'll discuss how and when newer OpenLayers and ExtJS versions will be supported, and how to combine GeoExt with other JavaScript packages. Finally a roadmap for the future of GeoExt will be outlined along with how developers and users can get involved. Authors and Affiliations – Marc Jansen, terrestris Seth Girvin, Compass Informatics Christian Mayer, meggsimum Track – Software Topic – Software status / state of the art Level – 1 - Principiants. No required specific knowledge is needed. Language of the Presentation – English
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English
|
10.5446/57291 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Jansen, Marc
Mayer, Christian
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Tzotsos, Angelos (Moderation)
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The Very Best New Features of QGIS 3.x
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https://av.tib.eu/media/57292
| null |
https://tib.flowcenter.de/mfc/medialink/3/dea804f4b1392d910a3237c3042d43bc96cc1c84e497da32e0d0494bc182b8017d/FOSS4G_2021_-_The_Very_Best_New_Features_of_QGIS_3_JDcWCWRtAro.mp4
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2021
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Computer Science
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Conference/Talk
|
This presentation will give a visual overview of the major new improvements of QGIS 3.x over the last calendar year QGIS releases three new versions per year. With each there is a long list of new features. This presentation will give a visual overview of some of the best new features released over the last calendar year. Examples or short demonstrations will be included. Potential topics include: User interface * Symbology - renderers and labeling * the Temporal controller * Print composer * Improvements in the expression engine * Digitizing * New processing algorithms * Graphical modeler * QGIS 3D * Data providers and support for Mesh data and Point clouds. Come and learn about how far QGIS has evolved in the last year! Authors and Affiliations – Kurt Menke - Septima P/S, Copenhagen, Denmark Requirements for the Attendees – This talk will be of interest to many from casual users of QGIS to seasoned professionals. Track – Software Topic – Software status / state of the art Level – 2 - Basic. General basic knowledge is required. Language of the Presentation – English
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English
|
10.5446/57292 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Menke, Kurt
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Bryant, John (Moderation)
|
There and Back Again: Lessons learned in transitioning from GeoServer to MapProxy
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https://av.tib.eu/media/57293
| null |
https://tib.flowcenter.de/mfc/medialink/3/de1f27c96282c30a955ab9c5b2d60f32fc69a0d25f732fa11f5a998b93bcb18971/FOSS4G_2021_-_There_and_Back_Again__Lessons_learne_2FNPQoy3VgQ.mp4
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2021
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Computer Science
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Conference/Talk
|
The hurdles we encountered when transitioning a project from a single GeoServer instance to an autoscaling MapProxy system while trying to mimic existing functionality. The hurdles we encountered when transitioning a project from a single GeoServer instance to an autoscaling MapProxy system while trying to mimic existing functionality. Authors and Affiliations – James Banting, Sparkgeo Tom Christian, Sparkgeo Track – Use cases & applications Topic – Software/Project development Level – 2 - Basic. General basic knowledge is required. Language of the Presentation – English
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English
|
10.5446/57293 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Banting, James
Christian, Tom
|
N. N. (Moderation)
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FOSS4G 2021 - UN Open GIS Initiative: Implementation of Hybrid GIS Infrastructure
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https://av.tib.eu/media/57294
| null |
https://tib.flowcenter.de/mfc/medialink/3/de742e0f167c9bf85dae4d39d3131b0686f6cbefd6f4a5b4632a8c7ca6db5e8b29/FOSS4G_2021_-_UN_Open_GIS_Initiative__Implementati_EfYOw2kZzF4.mp4
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2021
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Computer Science
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Conference/Talk
|
The UN Open GIS Initiative is intending to provide a sustainable hybrid GIS platform (integrating open-source software GIS technology with the existing proprietary GIS platform) to effectively and efficiently support enhanced Situational Awareness and informed decision making to fulfill the core mandates of UN operations (e.g. Monitors ceasefire agreement & armed groups activities, Sustainable development, disaster risk reduction, etc.). During emergency operations, GIS and Image Intelligence significantly contribute to lifesaving operations, whether search and rescue or any other emergency operations. Having this ability, GIS has proven to minimize the cost of operations, assist in lifesaving activities, provide a common understanding of the situation through visual information of the areas of interest. UN has been utilizing geospatial technology over the past few decades and its GIS infrastructure has been built on mostly proprietary solutions. For the past years, hybrid and open-source technology have grown and matured beyond what just proprietary solutions can provide. Continuing provision of GIS services only on proprietary solution brings considerable challenges, such as limited flexibility, restrictions in data formats, high cost of licenses, limited options for scalability and mainstream, and difficulty to transfer capacity & technology to the Member States (host nations) and working partners. Where hybrid and open-source complement to effectively support UN operational and technical demands, it is complementing UN legacy GIS infrastructure, it minimizes the cost of licenses, which would optimize the cost of running and maintaining of GIS infrastructure. The hybrid and open source technology provides flexibility and streamlining of GIS process, scalability due to cost efficiency, interoperability, innovations, and has a lighter footprint on the infrastructure. Hybrid GIS architecture combines the necessary components and technical demand from both proprietary and open-source solutions through the integration of a geospatial database between a proprietary and open-source that complements both platforms to support every UN requirement. The Hybrid GIS Infrastructure pilot project focused on proofing the concept through the design and implementation of a hybrid prototype to support (1) Unite Map and (2) Open GeoPortal. This talk will share the experience of integration of proprietary and open-source GIS Infrastructure. Background: the UN Open GIS Initiative, established in 2016, is an ongoing partnership initiative and supported by the UN Member States, International Organizations including UN Agencies, Academia, NGOs, and the Private Sector. UN Open GIS aims to create an extended spatial data infrastructure by utilizing open source GIS solutions that meet the United Nations' operational requirements (UN Secretariat including UN field missions and Regional commissions) and then expands to UN agencies, UN operating partners, and developing countries. Authors and Affiliations – Timur Obukhov (1) Gakumin Kato (1) Diego Gonzalez Ferreiro (2) Zeeshan Khan (2) Luis E. Bermudez (3) HaeKyong Kang (4) (1) Geospatial Information Section, Office of Information and Communications Technology, United Nations (2) Client Solutions Delivery Section, Service for Geospatial, Information and Telecommunications Technologies, United Nations Global Service Centre (3) GeoSolutions USA (4) Korea Research Institute for Human Settlements (KRIHS) Track – Use cases & applications Topic – Software/Project development Level – 1 - Principiants. No required specific knowledge is needed. Language of the Presentation – English
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English
|
10.5446/57294 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Obukhov, Timur
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Terner, Michael
|
When Geometry meets Geography
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https://av.tib.eu/media/57295
| null |
https://tib.flowcenter.de/mfc/medialink/3/dee9c8ff01bd2a278b37b892c2604d16283284d7fb553b940b8838fdc70d8a1684/FOSS4G_2021_-_When_Geometry_meets_Geography__ri41Z-37C8.mp4
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2021
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Computer Science
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Conference/Talk
|
Geometry is clean, easy and polished. Geography is messy, dirty and unfitting. When we -geospatial developers and technicians- built applications to solve real life issues usually rely on the first. But eventually, we have to deal with the second. This talk is a very short sneak peak of a book I am writing to explain the most interesting cases I have experienced when working in the industry. Can a buffer tell me if I can take a walk to the nearest park? How a disputed territory such as Nagorno-Karabakh is displayed in a webmap? How geocoders understand the wide diversity of national postal systems? Geometry is clean, easy and polished. Geography is messy, dirty and unfitting. When we -geospatial developers and technicians- built applications to solve real life issues usually rely on the first. But eventually, we have to deal with the second. This talk is a very short sneak peak of a book I am writing to explain the most interesting cases I have experienced when working in the industry. Authors and Affiliations – Ramiro Aznar Geospatial Data Engineer at Planet Track – Transition to FOSS4G Topic – Data visualization: spatial analysis, manipulation and visualization Level – 1 - Principiants. No required specific knowledge is needed. Language of the Presentation – English
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English
|
10.5446/57295 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Aznar, Ramiro
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German, Alba (Moderation)
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FOSS4G 2021 - Women In Geospatial+: Career stories of women in FOSS4G
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https://av.tib.eu/media/57296
| null |
https://tib.flowcenter.de/mfc/medialink/3/de8542faa4e5ae10297712eac36eccf51b1820dc802fbad856b28242fc99e37904/FOSS4G_2021_-_Women_In_Geospatial___Career_stories_62EQrXyYJYc.mp4
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2021
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Computer Science
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Conference/Talk
|
The session highlights the different aspects related to equality and diversity in FOSS4G. In the past years, women+ groups, including Women in Geospatial+, have amassed members from all over the globe, as well as from all backgrounds in the geospatial field. Through our work, we noticed increased interest in participation in the geospatial field, necessity for mentorship and being mentored, proactivity and a keen desire to learn and have access to skills and opportunities that were not being easily available to women so far. Through our work and the work of other sister organisations (e.g Geochicas, African Women in GIS, Ladies of Landsat, Sisters of SAR, GeoLatinas), we could determine that while the trend for equality and diversity in the field is a positive one, albeit slow, there is an imbalanced involvement in open source component of the geospatial field, with less women+ representatives overall. The main goal of this event will be to showcase the opportunities of a career path in FOSS4G and the role of leadership in the FOSS4G space by hearing the stories of a slate of leaders. How these leaders got involved in FOSS4G and what attracted them to this side of the geospatial field? What does leadership mean within FOSS4G? What are some of the opportunities and challenges that these leaders face today? How do leaders in this space see the future of the community? What opportunities are there for individuals that seek to get more involved in FOSS4G? These questions will be addressed first in a panel discussion, followed by an opportunity to connect with fellow geospatial women+ in a social event. The panel will also focus on the broadening diversity of technical leaders within the FOSS4G, GIS, and other STEM communities and how these shifts have been reframing these technical spaces and their impact. The social event will give the participants the occasion to meet, socialise and share individual experiences in an interactive manner. Authors and Affiliations – Kate Vavra-Musser Cristina Vrinceanu Laura Mugeha Rohini Swaminathan Track – Community / OSGeo Topic – Community & participatory FOSS4G Level – 1 - Principiants. No required specific knowledge is needed. Language of the Presentation – English
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English
|
10.5446/57296 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Brovelli, Maria Antonia
Vrinceanu, Cristina
Mugeha, Laura
Gonzalez, Miriam
Swaminathan, Rohini
Vizireanu, Alina
Sidibe, Nathalie
Groenen, Danielle
|
Vrinceanu, Cristina
|
Evolving Imagery Visualization with Open Source Development
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https://av.tib.eu/media/57297
| null |
https://tib.flowcenter.de/mfc/medialink/3/de8d5b8c02a5e095021caaf42c036dffa4defa9b7eba3562319bbf3ea5d19867df/FOSS4G_2021-_Evolving_Imagery_Visualization_with_O_n5c2Owm7z44.mp4
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2021
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Computer Science
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Conference/Talk
|
Bayer Crop Science has engaged in a multi-year collaboration with Sparkgeo Consulting to deliver an evolving set of spatial imagery search, discovery, and visualization capabilities built on top of open source geospatial software. Initial solutions integrated CKAN, Geoserver, and Geotrellis to pre-render custom tilesets for derived analytic outputs. This process proved difficult to scale with increasing ingest rates and led to standardizing imagery pipeline outputs on Cloud Optimized GeoTIFFs(COGs) with rio-tiler, pyproj, GDAL , Shapely, and Rasterio for processing to define dynamic rendering visualization products in a newly developed STAC-compliant catalog. The Sparkgeo team has written a custom Global Imagery Search tool for our corporate OpenLayers-enabled application framework which combines event-based per-scene visualization processing with STAC search results and TMS-to-COG range/column searches. The Global Imagery Search tool also allows client/application side dynamic color map rendering. This presentation will describe the evolution from tilesets to dynamic rendered tiles and the customizations within STAC-collections needed to achieve this. This presentation will describe the implementation challenges of scaling inputs and processing pre-rendered tilesets for application visualization and how the decision to re-direct to a COGs + STAC cloud implementation has met our scaling objectives. Authors and Affiliations – Martin Mendez-Costabel – Bayer Crop Science Paul Trudt – Bayer Crop Science Will Cadell – SparkGeo Consulting Dustin Sampson – Sparkgeo Consulting Joe Burkinshaw – Sparkgeo Consulting Angelo Arboleda – Sparkgeo Consulting Track – Use cases & applications Topic – Business powered by FOSS4G Level – 1 - Principiants. No required specific knowledge is needed. Language of the Presentation – English
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English
|
10.5446/57297 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Trudt, Paul
Sampson, Dustin
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Raez, Joshi
|
Google Summer of Code and UN-OSGeo Education Challenge 2021 Presentation
|
https://av.tib.eu/media/57298
| null |
https://tib.flowcenter.de/mfc/medialink/3/de40c450c2770a168d33fbb21d9e305985a73503618d6e7fdb318aa118a9f9b674/FOSS4G_2021_Google_Summer_of_Code_and_UN-OSGeo_Edu_Jjgghz_EzWQ.mp4
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2021
|
Computer Science
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Conference/Talk
|
The participants of this year's Google Summer of Code on OSGeo projects and winners of United Nations-OSGeo Education Challenge 2021 will present their work and their experiences contributing to OSGeo projects. This year, 12 students were assigned an OSGeo project to contribute to this Summer. Browse the projects at https://summerofcode.withgoogle.com/organizations/5336634351943680/ 2 Winners were selected for the United Nations-OSGeo Education Challenge 2021. Browse more details: https://www.osgeo.org/foundation-news/2021-osgeo-un-committee-educational-challenge/ Authors and Affiliations – Shinde, Rajat (1) Chauhan, Rahul (1) (1) Coordinator of OSGeo in the GSoC (OSGeo GSoC Organization Administration Team) Speakers: Francesco Bursi - [email protected] Linda Kladivova - [email protected], [email protected] Caitlin Haedrich - [email protected] Aaron Saw Min Sern - [email protected] Aniket Giri - [email protected] Aryan Kenchappagol - [email protected] Sandeep Saurav - [email protected] Sourav Singh - [email protected] Ayoub Fatihi - [email protected] Ashish Kumar - [email protected] Veenit Kumar - [email protected] Han WANG - [email protected] OSGeo-UN 2021 Challenge Winners Patrick Happ - [email protected] Swapnil Joshi - [email protected] Track – Community / OSGeo Topic – Software/Project development Level – 1 - Principiants. No required specific knowledge is needed. Language of the Presentation – English
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English
|
10.5446/57298 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Bursi, Francesco
Haedrich, Caitlin
Giri, Aniket
Saurav, Sandeep
Fatihi, Ayoub
Kumar, Veenit
Kladivova, Linda
Saw Min Sern, Aaron
Kenchappagol, Aryan
Singh, Sourav
Kumar, Ashish
Wang, Han
Happ, Patrick
Joshi, Swapnil
|
Delucchi, Luca (Moderation)
|
Terristory : a sustainable energy observatory becoming a mutualized nation-wide platform
|
https://av.tib.eu/media/57299
| null |
https://tib.flowcenter.de/mfc/medialink/3/de1c1f33f913406e3922f305506f741a4f3948ca59ba1463be0a70766f012e7cef/FOSS4G_2021-Terristory___a_sustainable_energy_obse_XGutmD1xgCk.mp4
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2021
|
Computer Science
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Conference/Talk
|
Terristory is a web platform providing a sustainable energy observatory oriented towards decision-makers and territory planners. AURA-Energie Environnement is a French association acting on account of the Auvergne-Rhône-Alpes region to promote sustainable energy. Aura-EE started the Terristory project a couple of years ago, in order to put their data on the web. Energy data is geographic by nature, and one of the main aspect of managing energy is being able to observe its characteristics on a given territory. From a simple data viewer, Terristory evolved into a full platform for data observation. Dynamic graphs have been added, and some advanced features like : - create scenarii on Energy equipment ( e.g. build a methanizer ) - impact of decisions on local employment Terristory is based on OpenSource software : PostGIS, Python, OpenLayers, Vector tiles… The full code for the Terristory platform itself is opensource and will be published publicly in 2021. Terristory was initially funded by a single actor and deployed in a single region. In 2020, the project accelerated : it evolved into a consortium to support the platform and deploy it in other regions. This evolution made Terristory a national project, and a reference platform for energy data visualization. This mutation is interesting on multiple levels, as it is totally coherent with an opensource project : - from a simple project to a full platform - from a single developer from a single company to multiple developers from various origins - from a single funder to multiple funders organized as a consortium - from a single actor for roadmap definition to a mutualized roadmap This transformation makes the project's history and experience unique. The battle for climate is open, and platforms such as Terristory have a strong role to play. It should be an inspiration for any project oriented towards opensource, opendata and resource mutualization. Terristory is a web platform providing a sustainable energy observatory oriented towards decision-makers and territory planners. AURA-Energie Environnement is a French association acting on account of the Auvergne-Rhône-Alpes region to promote sustainable energy. Aura-EE started the Terristory project a couple of years ago, in order to put their data on the web. Energy data is geographic by nature, and one of the main aspect of managing energy is being able to observe its characteristics on a given territory. From a simple data viewer, Terristory evolved into a full platform for data observation. Dynamic graphs have been added, and some advanced features like : - create scenarii on Energy equipment ( e.g. build a methanizer ) - impact of decisions on local employment Terristory is based on OpenSource software : PostGIS, Python, OpenLayers, Vector tiles… The full code for the Terristory platform itself is opensource and will be published publicly in 2021. Terristory was initially funded by a single actor and deployed in a single region. In 2020, the project accelerated : it evolved into a consortium to support the platform and deploy it in other regions. This evolution made Terristory a national project, and a reference platform for energy data visualization. This mutation is interesting on multiple levels, as it is totally coherent with an opensource project : - from a simple project to a full platform - from a single developer from a single company to multiple developers from various origins - from a single funder to multiple funders organized as a consortium - from a single actor for roadmap definition to a mutualized roadmap This transformation makes the project's history and experience unique. The battle for climate is open, and platforms such as Terristory have a strong role to play. It should be an inspiration for any project oriented towards opensource, opendata and resource mutualization. Authors and Affiliations – Sylvain Beorchia, Oslandia Vincent Picavet, Oslandia Pierrick Yalamas, AURA-EE Track – Use cases & applications Topic – Data collection, data sharing, data science, open data, big data, data exploitation platforms Level – 2 - Basic. General basic knowledge is required. Language of the Presentation – English
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English
|
10.5446/57299 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Beorchia, Sylvain
|
Unen, Can (Moderation)
|
EcoValuator: Basic Ecosystem Service Valuation for Custom Landscapes
|
https://av.tib.eu/media/57300
| null |
https://tib.flowcenter.de/mfc/medialink/3/deb6dfe436445486d8c6175fcb3efd502d8d5567944ca856d0dd335a60582c9222/FOSS4G_EcoValuator__Basic_Ecosystem_Service_Valuat_go-p_elphBg.mp4
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2021
|
Computer Science
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Conference/Talk
|
The EcoValuator plugin provides a simple means of estimating the dollar value of recreation, water supply, food, and other key ecosystem services for a given study area. Once installed in QGIS, the tool combines satellite land use/land cover data with your own spatial data describing watersheds, conservation areas, or other areas of interest. The EcoValuator then does the work of estimating land area in each land cover type present in your region using the Benefits Transfer Method (BTM) to generate dollar value estimates of the value of the ecosystem services supported by the land use/land cover present in your region. Ecosystem services are the many benefits to humans provided by the natural environment and healthy ecosystems. This definition emphasizes that ecosystem services are the effects the environment has on people, but it is not just what those effects are that matters. It is also where the effects occur. The “where” is especially what drove us to create the EcoValuator tool in order to better understand ecosystem service effects in our area of interest. The EcoValuator tool is a QGIS plugin which uses publicly available land use/land cover data to predict the value of the user’s study area. Currently, the plugin supports datasets from the North American Land Change Monitoring System (NALCMS), which covers Canada, Mexico, and the United States, or the National Land Cover Dataset (NLCD) for the US only. EcoValuator does this using the Benefits Transfer Method (BTM) to generate dollar-value estimates of the ecosystems supported by the land use/land cover present in your study area. BTM provides an accessible way of estimating the value of ecosystem service flows in your study area based on the values estimated in another, similar, setting, called the “source” area. BTM is a practical policy analysis tool when time and resource constraints prevent more involved methods. In the EcoValuator, we employ a version of “unit value transfer” and apply estimates from source studies to the user-defined study area based on matching land cover in both areas. We began with an initial list of more than 1,200 specific estimates of the monetary value of specific ecosystem services arising from specific land cover types and have classified the source studies according to each ecosystem service and have adjusted the monetary values for inflation. The EcoValuator is a pair of algorithms the user runs in sequence. In Step 1, the input land cover data is clipped to the user-input study area. The amount of each land cover type is calculated and multiplies those areas by the associated ecosystem service value in our input table of research data. Step 2 creates a new raster for which the value is represented per-pixel of the user-selected ecosystem service. Step 3 is optional and creates a nice looking final output in .pdf format. Though this project currently focuses on North American ecosystems, we plan to expand the use to accommodate land use/land cover data from other regions in the world, principally southeast Asia. Authors and Affiliations – Erich Purpur - University of Virginia. Charlottesville, Virginia, United States Track – Use cases & applications Topic – FOSS4G implementations in strategic application domains: land management, crisis/disaster response, smart cities, population mapping, climate change, ocean and marine monitoring, etc. Level – 2 - Basic. General basic knowledge is required. Language of the Presentation – English
|
English
|
10.5446/57300 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Purpur, Erich
|
Raez, Joshi (Moderation)
|
3D geo-applications with CesiumJS - data, possible use-cases and specifications
|
https://av.tib.eu/media/57301
| null |
https://tib.flowcenter.de/mfc/medialink/3/de0388999e024fc4e8aeac13cf5eb207d2c2063f3cf0146ad029c56d62cf8cca60/FOSS4G_-_3D_geo-applications_with_CesiumJS_-_data__V7W2_vKYamM.mp4
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2021
|
Computer Science
|
Conference/Talk
|
With the development of 3D applications related to geography, the standards and specifications for the provision of corresponding data are increasingly coming into focus. The presentation deals with the current development status of the CesiumJS library as well as the standards and possible uses of individual features and shows some examples from a recent project, in which we presented underground 3D geodata. Thus, this contribution can be seen as a renewal of our 2013 FOSS4G contribution entitled "Modelling 3D Underground Data In A Web-based 3D-Client". Not only are web-based open source 3D applications with a geographic reference constantly developing, but the development of standards and specifications for the presentation of 3D data on the web has also increasingly come into focus. A large number of libraries can be used for the representation on the web (e.g. x3dom, o3d, threejs, BabylonJS, Open GEE). Another library that has been growing steadily for several years is CesiumJS. This is used to process geographical questions in numerous areas. These include the real estate market, urban planning, sports or the various environmental sciences. In our talk we will present the current development status of the library and some possible use-cases of the features and data of CesiumJS will be briefly presented using projects as examples. A focus will also be placed on the requirements of the browser. In addition to the general availability and provision of data, the possible uses of individual selected features of the library will also be presented and discussed. When the world is represented digitally, corresponding data should also be placed there. Depending on the area of application, this can involve a relatively large amount of data, which is the case when dealing with underground data. Ideally this data should also be placed on the map in a simple way. There are already standards for the webbased-presentation of 2D-data in the web, new standards have been developed for the presentation of terrain, 3D models, buildings and point clouds as part of the development of CesiumJS. With 3D Tiles, an OGC community standard is now also available. Authors and Affiliations – Holthausen, Michael Adams, Till terrestris GmbH & Co KG Track – Software Topic – Data visualization: spatial analysis, manipulation and visualization Level – 1 - Principiants. No required specific knowledge is needed. Language of the Presentation – English
|
English
|
10.5446/57301 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Holthausen, Michael
Adams, Till
|
Rojas, Mara (Moderation)
|
A fast web 3D viewer for 11 million buildings
|
https://av.tib.eu/media/57302
| null |
https://tib.flowcenter.de/mfc/medialink/3/de5598a413da1f4d5848ec4f651915045ddd861ce7d2a84662d697743632d36bcd/FOSS4G_-_A_fast_web_3D_viewer_for_11_million_build_1_JM2Xf5mDk.mp4
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2021
|
Computer Science
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Conference/Talk
|
Can we visualize a data set of millions of buildings smoothly even on mobile devices? Turns out we can! 3D BAG is a data set containing all buildings in the Netherlands in 3D and we built a viewer to allow users to see it through their browser. This is how we utilized 3D Tiles and three.js to build a viewer from scratch with the main focus on efficiency and the data itself. This is a presentation about the 3D BAG web viewer, which allows for the visualization of 11 million buildings in the Netherlands. We built the viewer from scratch, using three.js and 3DTilesRendererJS for the consumption of the data. During the process, we had to implement our own WMS/WMTS viewer for three.js and to optimize the creation of 3D Tiles. The main focus was to provide a smooth experience to the user, focusing mainly on the efficient streaming of the data. We also added some basic measuring tools for buildings (height and slope of surface). The source code of the viewer is available here. All software used in the process is FOSS. We hope to make this an independent platform for others to distribute similar data. This project has received funding from the European Research Council (ERC) under the European Unions Horizon2020 Research & Innovation Programme (grant agreement no. 677312 UMnD: Urban modelling in higher dimensions). Authors and Affiliations – Ravi Peters (1)(2) Stelios Vitalis (1) Jordi van Liempt (1) (1) 3D geoinformation research group, TU Delft, the Netherlands (2) 3DGI, the Netherlands Track – Software Topic – Software/Project development Level – 1 - Principiants. No required specific knowledge is needed. Language of the Presentation – English
|
English
|
10.5446/57302 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Vitalis, Stelios
Liempt, Jordi van
|
Rojas, Mara (Moderation)
|
A Multidisciplinary Exploration of FOSS
|
https://av.tib.eu/media/57303
| null |
https://tib.flowcenter.de/mfc/medialink/3/de8df9248c692c94f42c84eb41090471cacc38e7fa35e66975b9667b7e6d331a34/FOSS4G_-_A_Multidisciplinary_Exploration_of_FOSS_7OesCKsk32M.mp4
|
2021
|
Computer Science
|
Conference/Talk
|
Python for Open Source GIS is multidisciplinary by nature and continually learning from adjacent disciplines. This talk will highlight how tools from the PyData community are augmenting the toolboxes of geospatial professionals. You will also come away with a sampling of key open source GIS tools that are being used across multiple disciplines. Description: The general format of the talk will be as follows: General overview of the multidisciplinary nature of FOSS tools Highlight of some recent interesting applications using FOSS Quick overview of some key libraries that are enhancing the multidisciplinary nature of FOSS tools Authors and Affiliations – Collins, Brendan (1) (1) makepath, U.S. Track – Use cases & applications Topic – Data visualization: spatial analysis, manipulation and visualization Level – 1 - Principiants. No required specific knowledge is needed. Language of the Presentation – English
|
English
|
10.5446/57303 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Collins, Brendan
|
Adams, Till (Moderation)
|
Al Accelerated Human-in-the-Loop schools and land use and land cover mapping
|
https://av.tib.eu/media/57304
| null |
https://tib.flowcenter.de/mfc/medialink/3/deeda9796831af31b5b5faefbe88ecf21aeb88a5688168d2243961662db6bebf53/FOSS4G_-_Al_Accelerated_Human-in-the-Loop_schools__jFCO23Xl8nk.mp4
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2021
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Computer Science
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Conference/Talk
|
Al Accelerated Human-in-the-Loop schools and land use and land cover mapping for climate actions AI isn’t perfect when it comes to learning about complex satellite imagery and real-world features. On the other hand, only relying on humans to map complex features and objects is too tedious and slow. AI accelerated human-in-the-loop methods provide new approaches to quickly create map objects and features for climate actions with scalable cloud computing power and growing EO data. At Development Seed, we’ve been proudly working with two partners, UNICEF and Microsoft Planetary Computer, to bring AI accelerated human-in-the-loop methods to the hands of policymakers, scientists, and mappers for SGD and climate actions. In this talk, we would like to present: What are AI accelerated human-in-the-loop methods for SDG and climate action? How can we leverage the scalable methods in the era of growing EO data and cloud computing? How fast and scalable we can create accurate school and LULC maps for policymakers, scientists, and mappers. Please see the abstract above Authors and Affiliations – Development Seed Track – Open data Topic – FOSS4G implementations in strategic application domains: land management, crisis/disaster response, smart cities, population mapping, climate change, ocean and marine monitoring, etc. Level – 1 - Principiants. No required specific knowledge is needed. Language of the Presentation – English
|
English
|
10.5446/57304 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
NaNa Yi, Zhuang-Fang
|
Gold, Margaret (Moderation)
|
An introduction to the open access high resolution tropical forest data program
|
https://av.tib.eu/media/57305
| null |
https://tib.flowcenter.de/mfc/medialink/3/de3013f5513bf82d5a56b1343bd997ed369a5dd57a85b4131d53e20238d3c130fb/FOSS4G_-_An_introduction_to_the_open_access_high_r_yVcQTNdhBMQ.mp4
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2021
|
Computer Science
|
Conference/Talk
|
Access to high resolution data to support sustainable development activities, particularly for conservation and deforestation has often been limited by barriers of cost and licensing. Yet the benefit of higher resolution data provides opportunities for improved reporting, monitoring changes or high cadence updates not afforded by public sources alone. This was one of the reasons the Norwegian Ministry of Climate and Environment through NICFI funded the Global tropical forest program initiative to, for the first time ever, enable users to access high resolution data without these usual barriers. The program focuses on the purpose of reducing and reversing the loss of tropical forests and is designed to be as broad as possible to ensure it is useful for as many groups as possible. This presentation will introduce the program, the datasets and the various open tools that can be used to explore the data through case studies and applications. Authors and Affiliations – Charlotte Bishop, KSAT Tara O'Shea, Planet Track – Transition to FOSS4G Topic – FOSS4G implementations in strategic application domains: land management, crisis/disaster response, smart cities, population mapping, climate change, ocean and marine monitoring, etc. Level – 1 - Principiants. No required specific knowledge is needed. Language of the Presentation – English
|
English
|
10.5446/57305 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Bishop, Charlotte
O'Shea, Tara
|
Gasgonia, Francis Josef (Moderation)
Cherrington, Emil (Moderation)
|
An open-source geospatial workflow to map diverse landscapes in Pacific Island Countries
|
https://av.tib.eu/media/57306
| null |
https://tib.flowcenter.de/mfc/medialink/3/def5f3bd94ea9bab8784f1067c38c847d6e039ca848cd11257398ea5436e33bb17/FOSS4G_-_An_open-source_geospatial_workflow_to_map_46wWh-As3dQ.mp4
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2021
|
Computer Science
|
Conference/Talk
|
In Pacific Island Countries, the environmental resources that support livelihoods are distributed across landscapes in a mix of spatial patterns. Capturing the spatial detail of landscape use is important to inform landscape management that is sensitive to these livelihood dependencies. Using information and communication technologies for development (ICT4D) and agile software development processes, a workflow was developed that comprises open-source geospatial software to map and monitor agricultural landscapes. This workflow was co-developed with the Vava’u branch of the Ministry of Agriculture, Food, Forests, and Fisheries (MAFF) of the Government of Tonga. The workflow consists of mobile GIS to map farms, web-applications to synchronise and store data, and spatial dashboards for data visualisation and analysis. Mobile geospatial data collection uses QField for intra-farm mapping of cropping practices and digital forms to record farm management attributes. A web application has been developed using Express and Python to support data syncing, automatically generating datasets for reporting on cropping practices and landscape conditions, and for secure data storage. A spatial dashboard, built using Shiny and Leaflet, allows non-GIS experts to easily query and visualise landscape data collected in the field and to use this data in landscape decision making. This workflow has been used by MAFF for an array of data collection and mapping campaigns. Example uses include: mapping the location of vanilla plantations under sub-optimal management condition; identifying where land was under-utilised or left fallow by farmer groups to spatially target fuel and cash resources to increase land under cultivation; and annual crop monitoring to generate island-wide coverage of intra-farm cropping practices to serve as baseline data to track agricultural change through time. This talk will discuss the software development process including: the needs assessment to identify and prioritise unmet needs for geospatial data and applications; requirements identification and analysis using use case modelling and rapid prototype development and testing; and refinement and deployment of the workflow for agricultural landscape monitoring on the island group of Vava’u. This talk will also elaborate on the implementations of the workflow, highlight lessons learnt through the development process, and highlight areas for future work and expansion. Authors and Affiliations – Duncan, John (1) Davies, Kevin (2) Saipaia, Ahi (3, 4) Varea, Renata (4) Vainikolo, Leody (3) Boruff, Bryan (1) Bruce, Eleanor (2) Wales, Nathan (3) (1) UWA School of Agriculture and Environment, The University of Western Australia, Australia (2) School of Geosciences, The University of Sydney, Sydney (3) Ministry of Agriculture, Food, Forests, and Fisheries, The Government of Tonga, The Kingdom of Tonga (4) Geography, Earth Science and Environment, The University of the South Pacific, Fiji Track – Use cases & applications Topic – FOSS4G implementations in strategic application domains: land management, crisis/disaster response, smart cities, population mapping, climate change, ocean and marine monitoring, etc. Level – 1 - Principiants. No required specific knowledge is needed. Language of the Presentation – English
|
English
|
10.5446/57306 (DOI)
|
CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Duncan, John
Saipaia, Ahi
|
Raez, Joshi (Moderation)
|
Reverse mathematics and the ascending chain condition
|
https://av.tib.eu/media/57615
| null |
https://tib.flowcenter.de/mfc/medialink/3/de32ccddd12424c58063d09f1615f5af87bda09ac0fa5b97c3ae9f96d947c4f9f0/201909161010-Simpson_lrv.mp4
|
2019
|
Computer Science
Mathematics
|
Workshop/Interactive Format
Lecture
| null |
English
|
10.5446/57615 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Simpson, Stephen G.
| null |
The open and clopen Ramsey theory in the Weihrauch lattice
|
https://av.tib.eu/media/57616
| null |
https://tib.flowcenter.de/mfc/medialink/3/dee5eaf9d0d39ee395f8737f6bbd39f6b7dec23aa0aa1489d38649f32506fd1923/201909161140-Marcone_lrv.mp4
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2019
|
Computer Science
Mathematics
|
Workshop/Interactive Format
Lecture
| null |
English
|
10.5446/57616 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Marcone, Alberto
| null |
Questions about Hindman’s theorem
|
https://av.tib.eu/media/57617
| null |
https://tib.flowcenter.de/mfc/medialink/3/dea6a578e8fdbc2e22416bd74efdf3ee63f0e4170837e3ffb25e3eaefb0610069d/201909161500-Hirst_lrv.mp4
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2019
|
Computer Science
Mathematics
|
Workshop/Interactive Format
Lecture
| null |
English
|
10.5446/57617 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Hirst, Jeff
| null |
The reverse mathematics of Büchi’s decidability theorem
|
https://av.tib.eu/media/57618
| null |
https://tib.flowcenter.de/mfc/medialink/3/de87862ae25a43a62f0c4e0f6cf2d60a6c8829eb634512a33fc9393ccff496e375/201909161630-Kolodziejczyk_lrv.mp4
|
2019
|
Computer Science
Mathematics
|
Workshop/Interactive Format
Lecture
| null |
English
|
10.5446/57618 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Kolodziejczyk, Leszek
| null |
Cohesive trees
|
https://av.tib.eu/media/57619
| null |
https://tib.flowcenter.de/mfc/medialink/3/de61d65bfac728a386e847fb5efddaf7b633c41f981e66b37a4e7ecd96c6546e99/201909170930-Chong_lrv.mp4
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2019
|
Computer Science
Mathematics
|
Workshop/Interactive Format
Lecture
| null |
English
|
10.5446/57619 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Chong, Chitat
| null |
Open Problems in the Reverse Mathematics of Ramsey Theory on Trees and Graphs
|
https://av.tib.eu/media/57620
| null |
https://tib.flowcenter.de/mfc/medialink/3/de215d10f80d817a23d886eab03813f5d1d38c460d4a9f62a037e035ff6f8bd84b/201909171100-Dobrinen_lrv.mp4
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2019
|
Computer Science
Mathematics
|
Workshop/Interactive Format
Lecture
| null |
English
|
10.5446/57620 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Dobrinen, Natasha
| null |
SRT22 does not imply COH in omega models
|
https://av.tib.eu/media/57621
| null |
https://tib.flowcenter.de/mfc/medialink/3/de3544b1de0d893225d1bd2092e439e63dd26708ce54b5e78c5b9afc2d01b0a080/201909171500-Patey_lrv.mp4
|
2019
|
Computer Science
Mathematics
|
Workshop/Interactive Format
Lecture
| null |
English
|
10.5446/57621 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Patey, Ludovic
| null |
Lowness of the pigeonhole principle
|
https://av.tib.eu/media/57622
| null |
https://tib.flowcenter.de/mfc/medialink/3/de9c26f47c2563c568edbfbaffa8ff2daad0c87edbce450629ab674d7be0e68391/201909171630-Monin_lrv.mp4
|
2019
|
Computer Science
Mathematics
|
Workshop/Interactive Format
Lecture
| null |
English
|
10.5446/57622 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Monin, Benoit
| null |
Reverse math of the dual Ramsey theorem
|
https://av.tib.eu/media/57623
| null |
https://tib.flowcenter.de/mfc/medialink/3/de4929ad7b4deb2b2456366fa24da07ab7fdd430c5697b1f2364290873523cbf88/201909190930-Westrick_lrv.mp4
|
2019
|
Computer Science
Mathematics
|
Workshop/Interactive Format
Lecture
| null |
English
|
10.5446/57623 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Brown Westrick, Linda
| null |
Some propositions between WWKL0 and WKL0
|
https://av.tib.eu/media/57624
| null |
https://tib.flowcenter.de/mfc/medialink/3/de6876bbd58a09d76d76580549c2fc0e02112124df4abcc6e3d04330ca6c96edba/201909191100-Wang_lrv.mp4
|
2019
|
Computer Science
Mathematics
|
Workshop/Interactive Format
Lecture
| null |
English
|
10.5446/57624 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Wang, Wei
| null |
Recent struggling for the first-order part of Ramsey’s theorem for pairs
|
https://av.tib.eu/media/57625
| null |
https://tib.flowcenter.de/mfc/medialink/3/de7023f1cf23cc257061f9a4e8e823e6bad443bfd604bc8e156abd22c66b14fa5f/201909191500-Yokoyama_lrv.mp4
|
2019
|
Computer Science
Mathematics
|
Workshop/Interactive Format
Lecture
| null |
English
|
10.5446/57625 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Yokoyama, Keita
| null |
Weihrauch degrees of closed choice on finite spaces
|
https://av.tib.eu/media/57626
| null |
https://tib.flowcenter.de/mfc/medialink/3/dee728be06039b32fb14136067ce198ac1e30fbee9c459592cfb6f9881112b6e36/201909191630-Pauly_lrv.mp4
|
2019
|
Computer Science
Mathematics
|
Workshop/Interactive Format
Lecture
| null |
English
|
10.5446/57626 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Pauly, Arno
| null |
The reverse mathematics of an inside-outside Ramsey theorem
|
https://av.tib.eu/media/57627
| null |
https://tib.flowcenter.de/mfc/medialink/3/de858f66ef4654e022c33294db06913a36e008b39bea19f20391a84ae8df97a0a0/201909200930-Shafer_lrv.mp4
|
2019
|
Computer Science
Mathematics
|
Workshop/Interactive Format
Lecture
| null |
English
|
10.5446/57627 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Shafer, Paul
| null |
Relationships between preservation properties of problems
|
https://av.tib.eu/media/57628
| null |
https://tib.flowcenter.de/mfc/medialink/3/deaaddc5a0ab584596b7038f5bd7c32b94baabec7c88941dc0fd8f7ebc7e3692d6/201909201100-Greenberg_lrv.mp4
|
2019
|
Computer Science
Mathematics
|
Workshop/Interactive Format
Lecture
| null |
English
|
10.5446/57628 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Greenberg, Noam
| null |
Structural sensitivity of ecological models: state of the art and challenges
|
https://av.tib.eu/media/57601
| null |
https://tib.flowcenter.de/mfc/medialink/3/de6e782bad9eeb5fd75669aa80091ac58e56ec745ad08c89b8972f15bba5801528/201907290945-Morozov_lrv.mp4
|
2019
|
Life Sciences
Mathematics
|
Workshop/Interactive Format
Lecture
|
When we construct mathematical models to represent a given real-world system, there is always a degree of uncertainty with regards to the model specification - whether with respect to the choice of parameters or to the choice of formulation of model functions. This can become a real problem in some cases, where choosing two different functions with close shapes in a model can result in substantially different model predictions. This phenomenon is known as structural sensitivity, and is a significant obstacle to improving the predictive power of models - particularly in fields where it is not possible to derive the functions suitable for representing system processes from theory or physical laws, such as the biological sciences. In this talk, I shall revisit the notion of structural sensitivity and propose a general approach to reveal structural sensitivity which is a far more powerful technique than the conventional approach consisting of fixing a particular functional form and varying its parameters. I will demonstrate that conventional methods based on variation of parameters alone will often miss structural sensitivity. I shall discuss the consequences that structural sensitivity and the resulting model uncertainty may have for the modelling of biological systems. In particular, it will be shown the concept of a 'concrete' bifurcation structure may no longer be relevant in the case of structural sensitivity, thus we can only describe bifurcations of completely deterministic systems with a certain probability. Finally, I will show that structural sensitivity can be a possible explanation of the observed irregularity of oscillations of population densities in nature. At the end, we will discuss the current challenges related to structural sensitivity in models and data.
|
English
|
10.5446/57601 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Morozov, Andrew
| null |
Introduction and Perspectives
|
https://av.tib.eu/media/57602
| null |
https://tib.flowcenter.de/mfc/medialink/3/de661f2451b329d6a05b6e2713e996ea46e0462c1846f6e13bb0175893f9286e30/201907290909-Hastings_lrv.mp4
|
2019
|
Life Sciences
Mathematics
|
Workshop/Interactive Format
Lecture
| null |
English
|
10.5446/57602 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Hastings, Alan
| null |
Rate-Induced Tipping: Beyond Classical Bifurcations in Ecology
|
https://av.tib.eu/media/57603
| null |
https://tib.flowcenter.de/mfc/medialink/3/de1dcc14e98e37db5310c360a0c2ef35e3ac532062f1f3cfe6a3eabffee10c4e01/201907291050-Wieczorek_lrv.mp4
|
2019
|
Life Sciences
Mathematics
|
Workshop/Interactive Format
Lecture
|
Many systems from the natural world have to adapt to continuously changing external conditions. Some systems have dangerous levels of external conditions, defined by catastrophic bifurcations, above which they undergo a critical transition (B-tipping) to a different state; e.g. forest-desert transitions. Other systems can be very sensitive to how fast the external conditions change and have dangerous rates - they undergo an unexpected critical transition (R-tipping) if the external conditions change slowly but faster than some critical rate; e.g. critical rates of climatic changes. R-tipping is a genuine non-autonomous instability which captures ``failure to adapt to changing environments" [1,2]. However, it cannot be described by classical bifurcations and requires an alternative mathematical framework. In the first part of the talk, we demonstrate the nonlinear phenomenon of R-tipping in a simple ecosystem model where environmental changes are represented by time-varying parameters [Scheffer et al. Ecosystems 11 2008]. We define R-tipping as a critical transition from the herbivore-dominating equilibrium to the plant-only equilibrium, triggered by a smooth parameter shift [1]. We then show how to complement classical bifurcation diagrams with information on nonautonomous R-tipping that cannot be captured by the classical bifurcation analysis. We produce tipping diagrams in the plane of the magnitude and `rate’ of a parameter shift to uncover nontrivial R-tipping phenomena. In the second part of the talk, we develop a general framework for R-tipping based on thresholds, edge states and a suitable compactification of the nonautonomous system. This allows us to define R-tipping in terms of connecting heteroclinic orbits in the compactified system, which greatly simplifies the analysis. We explain the key concept of threshold instability and give rigorous testable criteria for R-tipping in arbitrary dimensions. References: [1] PE O'Keeffe and S Wieczorek,'Tipping phenomena and points of no return in ecosystems: beyond classical bifurcations', arXiv preprint arXiv:1902.01796 [2] A Vanselow, S Wieczorek, U Feudel, 'When very slow is too fast: Collapse of a predator-prey system' Journal of Theoretical Biology (2019).
|
English
|
10.5446/57603 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Wieczorek, Sebastian
| null |
Open ecological questions that we can answer when we think carefully about stochasticity
|
https://av.tib.eu/media/57604
| null |
https://tib.flowcenter.de/mfc/medialink/3/defd58eabd7e8ce3dac7b1cc78384515068f105151ab063a9a4eaea8c26d9439b4/201907291931-Abbott_lrv.mp4
|
2019
|
Life Sciences
Mathematics
|
Workshop/Interactive Format
Lecture
|
Classical ecological theory relies heavily on the principles of deterministic dynamical systems, and methods from mathematics and physics that are more appropriate for stochastic systems are unfamiliar to many ecologists. As a result, when stochasticity plays an important role in shaping ecological dynamics — as it often does — our ability to fully address certain questions can be limited. In this talk, I will give an overview of some new (or at least newly extended for ecological applications) mathematical methods that bring important new classes of questions into reach.
|
English
|
10.5446/57604 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Abbott, Karen
| null |
Population persistence and species coexistence in the face of environmental uncertainty
|
https://av.tib.eu/media/57605
| null |
https://tib.flowcenter.de/mfc/medialink/3/deabee1a33df399a733f95efd4cc6559b3bdcbc9090ef4826c8b153e0ab047ef2d/201907300905-Schreiber_lrv.mp4
|
2019
|
Life Sciences
Mathematics
|
Workshop/Interactive Format
Lecture
|
The dynamics of species’ densities depend both on internal and external variables. Internal variables include frequencies of individuals exhibiting different phenotypes or living in different spatial locations. External variables include abiotic factors or non-focal species. These internal or external variables may fluctuate due to stochastic fluctuations in environmental conditions. The interplay between these variables and species densities can determine whether a particular population persists or goes extinct. I will present recent theorems for stochastic persistence and exclusion for stochastic ecological difference equations accounting for internal and external variables, and will illustrate their utility with applications to models of eco-evolutionary dynamics.
|
English
|
10.5446/57605 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Schreiber, Sebastian
| null |
Understanding ecological dynamics: Stability metrics and Early warnings
|
https://av.tib.eu/media/57606
| null |
https://tib.flowcenter.de/mfc/medialink/3/ded4505b2f6426d919595893d6d5171a406df5e25a71f4e80cb5e9299455987cf5/201907300943-Dakos_lrv.mp4
|
2019
|
Life Sciences
Mathematics
|
Workshop/Interactive Format
Lecture
|
Understanding stability of ecosystems and communities has always been major challenge for ecologists. Definitions and measures of stability abound and at times are confusing. Nowadays it is in general accepted that stability is multidimensional and it needs to be measured in different ways. Some of the metrics are used to highlight resistance of ecological systems to a specific type of perturbations (like an invasion of an alien). Others have been developed to highlight the approach to tipping points (that is catastrophic transitions between different dynamical states). As long-term data become increasingly available and experimental approaches are improving, the challenge is how to apply our theoretical metrics on these ecological dynamics to understand stability. In the talk, I will present a possible way for identifying best suitable metrics for measuring stability in ecological communities. More in depth, I will also focus on how changes in dynamical properties of ecological dynamics can be used as early warnings to abrupt ecological changes using examples from ecology and the climate.
|
English
|
10.5446/57606 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Dakos, Vasilis
| null |
Optimal control of two ecological models
|
https://av.tib.eu/media/57607
| null |
https://tib.flowcenter.de/mfc/medialink/3/de989cf4bcabd1a2213e8134caf066ed0d233bfa60905446874f4bc4914bcd11a5/201907301102-Lenhart_lrv.mp4
|
2019
|
Life Sciences
Mathematics
|
Workshop/Interactive Format
Lecture
|
Some basic ideas behind optimal control of ODEs and PDEs will be introduced. Control of a flow rate in a PDE model for a population in a river will be illustrated. Harvesting in a system of ODEs representing an anchovy ecosystem in the Black Sea will be discussed. Issues and new features of control approaches will be presented at the end and could lead to discussions later at this workshop.
|
English
|
10.5446/57607 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Lenhart, Suzanne
| null |
Improved inference for nonparametric approaches to ecological dynamics
|
https://av.tib.eu/media/57608
| null |
https://tib.flowcenter.de/mfc/medialink/3/deca34e46bec3a15135dd023ded3819913e1fd42401b3dc380a9a07166b185391c/201907301933-Munch_lrv.mp4
|
2019
|
Life Sciences
Mathematics
|
Workshop/Interactive Format
Lecture
|
Ecosystem-based approaches to management are desirable for many reasons. However quantitative approaches to ecosystem management are hampered by incomplete knowledge of the system state and uncertainty in the underlying dynamics. In principal, we can circumvent these difficulties using nonparametric approaches to model the uncertain dynamics and using time-delay embedding to implicit account for missing state variables. However, these methods are incredibly data-hungry and tend to be sensitive to observation noise. Here I propose to mitigate these practical obstacles a) by adopting a state-space perspective that allows us to partition observation and process uncertainty and b) by combining data from multiple locations using hierarchical and spatial modeling approaches. We find that noise reduction substantially improves attractor reconstruction and reduces bias in the estimation of Lyapunov exponents from noisy time series. Spatial-delay embedding significantly increases the time horizon over which useful predictions can be made compared to more traditional local embedding.
|
English
|
10.5446/57608 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Munch, Steve B.
| null |
A convenient form of complexity in ecology: multiple timescales
|
https://av.tib.eu/media/57609
| null |
https://tib.flowcenter.de/mfc/medialink/3/de327e8553c159aab8c329c679717a2035e4ea813004f9591d0396b8e1cf7775df/201907310904-Cosner_lrv.mp4
|
2019
|
Life Sciences
Mathematics
|
Workshop/Interactive Format
Lecture
|
One of the features that distinguishes biological systems is the wide range of scales in time and space on which processes and interactions occur. This is a form of complexity, but it is one that can sometimes be turned into an advantage. I will describe models for a couple of systems where my collaborators and I have found that to be the case. The first (from long ago) is a system with ladybugs preying on aphids. The ladybugs (which are highly mobile but reproduce slowly) experience the environment as a system of patches, while the aphids (which are much less mobile but reproduce quickly) experience each patch as spatial continuum. The second (more recent) is a system aimed at describing the evolution of dispersal. Dispersal starts with the movement of individuals, which can be observed by tracks or tracking and described in terms of random walks. That then produces spatial patterns, which then influence ecological interactions within and among populations. Those in turn exert selective pressure on traits that determine the spatial patterns, and finally the selective pressure together with the occasional the appearance of mutants results in the evolution of dispersal traits. All of these processes can, in some cases, operate on different scales in time and space. It turns out that this when this occurs it can be exploited to produce relatively simple models in some situations. The older research I will discuss was conducted in collaboration with Steve Cantrell; the newer was with Steve Cantrell, Mark Lewis, and Yuan Lou.
|
English
|
10.5446/57609 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Cosner, Chris
| null |
Transient dynamics in equilibrium and non-equilibrium communities
|
https://av.tib.eu/media/57610
| null |
https://tib.flowcenter.de/mfc/medialink/3/de22da05d0b2865ee8b94a735503d76b95b6172957a4e2f83f8a985be5048ac6eb/201908010901-Lutscher_lrv.mp4
|
2019
|
Life Sciences
Mathematics
|
Workshop/Interactive Format
Lecture
|
Human activities or natural events may perturb locally stable equilibrium communities. One can ask how long the community will take to return to its equilibrium and how "far" from the equilibrium it may get in the process. To answer those questions, we can measure the "resilience" and "reactivity" of a system. These concepts thus quantify one particular form of transient dynamics in ecological models. I will briefly review these measures and give some examples and known but still surprising insights. Then I will suggest extensions to periodically forced systems and periodic orbits in autonomous systems and examine some of their properties.
|
English
|
10.5446/57610 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Lutscher, Frithjof
| null |
Long transients in ecology: theory and applications
|
https://av.tib.eu/media/57611
| null |
https://tib.flowcenter.de/mfc/medialink/3/de18741425cc1ab5609fe0d5100b038d28eba943ebe9d494f8b8fa8598e44565af/201908010942-Petrovskii_lrv.mp4
|
2019
|
Life Sciences
Mathematics
|
Workshop/Interactive Format
Lecture
|
We will discuss the recent progress in understanding the properties of transient dynamics in complex ecological systems. Predicting long-term trends as well as sudden changes and regime shifts in ecosystems dynamics is a major issue for ecology as such changes often result in population collapse and extinctions. Analysis of population dynamics has traditionally been focused on their long-term, asymptotic behavior whilst largely disregarding the effect of transients. However, there is a growing understanding that in ecosystems the asymptotic behavior is rarely seen. A big new challenge for theoretical and empirical ecology is to understand the implications of long transients. It is believed that the identification of the corresponding mechanisms should substantially improve the quality of long-term forecasting and crisis anticipation. Although transient dynamics have received considerable attention in physical literature, research into ecological transients is in its infancy and systematic studies are lacking. This work aims to partially bridge this gap and facilitate further progress in quantitative analysis of long transients in ecology. By revisiting and examining a variety of mathematical models used in ecological applications as well as some empirical facts, we reveal main mechanisms leading to the emergence of long transients both is spatial and nonspatial systems.
|
English
|
10.5446/57611 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Petrovskii, Sergei
| null |
Handling uncertain spatial data in monitoring and control problems
|
https://av.tib.eu/media/57612
| null |
https://tib.flowcenter.de/mfc/medialink/3/deb0f5bec8f05d9bc467f31e60ed5bd6d41d6cccc70e76e8db1687be9ed50f6461/201908011052-Petrovskaya_lrv.mp4
|
2019
|
Life Sciences
Mathematics
|
Workshop/Interactive Format
Lecture
|
In many ecological problems spatial data are collected to satisfy the requirement that the population spatial distributions can be reconstructed with high accuracy. The situation, however, may be different when reconstruction of spatial distributions is required in the context of monitoring and control (M&C) protocol. In my talk I will argue that the M&C protocol can be thought of as a data filter as its application transforms the original dataset and it often results in a spatial distribution with essentially different properties. That transformation may, in turn, alleviate negative impact of uncertainty on the accuracy of results when spatial distributions are reconstructed from data with measurement errors. While original data are affected by the measurement errors, the filtered data may or may not be affected depending on the filter definition. In some cases, there is no need to ask for more accurate data collection as measurement errors will be `eliminated' by application of the M&C protocol. Meanwhile, it will also be shown in the talk that if inherent uncertainty presents in the model, the M&C data filter may become useless, no matter how accurate the data are. This is a joint work with John Ellis and Wenxin Zhang.
|
English
|
10.5446/57612 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Petrovskaya, Natalia
| null |
Ecological Modelling with Data
|
https://av.tib.eu/media/57613
| null |
https://tib.flowcenter.de/mfc/medialink/3/dea2144e588559228ac8a2ce38dbaffff04bbff12569bf574ee21b5590fea8c72d/201908011933-Tyson_lrv.mp4
|
2019
|
Life Sciences
Mathematics
|
Workshop/Interactive Format
Lecture
|
In order for models to make relevant predictions about real ecological systems, it is helpful to have data to guide the selection of, for example, parameter values, interaction functions, and dispersal kernels. For many ecological systems, however, data is sparse. Nonetheless, these data can still lead to the development of models that give rise to theoretical predictions with real relevance. Several examples will be presented and discussed in this talk.
|
English
|
10.5446/57613 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Tyson, Rebecca C.
| null |
Summary and Outlook
|
https://av.tib.eu/media/57614
| null |
https://tib.flowcenter.de/mfc/medialink/3/de49fe2114020c585959959d654a2749e4ec59872637fc9bbf2e4f47e60679c478/201908021022-Lewis_lrv.mp4
|
2019
|
Life Sciences
Mathematics
|
Workshop/Interactive Format
Lecture
| null |
English
|
10.5446/57614 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 4.0 International:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Lewis, Mark
| null |
FAIR – Assessment or Improvement?
|
https://av.tib.eu/media/57596
| null |
https://tib.flowcenter.de/mfc/medialink/3/de0b9789b442120b122729f73dec19beb99c157b33237797e299a91014fd0644c1/2022-05-20_HMC-FAIR-Friday_Anusuriya-Devaraju_1.mp4
|
2022
|
Information Science
|
Conference/Talk
|
Funders, publishers, and data service providers have strongly endorsed applying FAIR principles to maximize the reuse of research data since the principles were published in 2016. Much of existing work on FAIR assessment focuses on "what" needs to be measured, which led to the development of assessment metrics. However, the questions of "how" to measure the FAIRness of the research data and use the assessment results to improve data reuse haven't been fully demonstrated in practice yet. This presentation will cover some insights on these aspects derived from the development of a practical solution (F-UJI) to measure the progress of FAIR aspects of data programmatically.
|
English
|
10.5446/57596 (DOI)
|
CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Devaraju, Anusuriya
Huber, Robert
|
Helmholtz Information and Data Science Academy
|
Heat transfer through the boundary layer of elliptical shaped leaves under free convection
|
https://av.tib.eu/media/57516
| null |
https://tib.flowcenter.de/mfc/medialink/3/deacee7c8780314cc52ee4f4e303024d4822ff217e578d7e7d7259e4a8c0b543dd/21_Graefe_final.mp4
|
2022
|
Mathematics
|
Conference/Talk
Workshop/Interactive Format
|
The efficiency of heat and mass exchange between leaves and their environment under low wind speed is dominated by free convection. This is commonly quantified in terms of the Nusselt number (Nu) and the Rayleigh number (Ra). The currently available Nu = f(Ra) relations for inclined plates were mostly derived for infinite wide plates or from one-sided heat transfer studies. A comprehensive simulated data set of laminar free convection may be used to derive new Nu relations at any inclination and for both plate sides. The relevant equations for free convection in 3D are solved numerically using the computational fluid dynamic (CFD) software OpenFOAM. The simulated Nusselt numbers agree very good with previous measurements for vertical and horizontal circular plates having a diameter of 84 mm. Various finite thickness (0.5 mm) elliptical plates (i.e. leaves) having aspect ratios between 1 and 3, plate length ranging from 30 to 160 mm and a range of inclinations are simulated with plate to air differences set to 1?12 K. Simulated heat fluxes from each leaf side are used to parameterize a comprehensive set of Nu relations.
|
English
|
10.5446/57516 (DOI)
|
CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Graefe, Jan
| null |
Importance of Relative Spatial Information (RSI) in EBS
|
https://av.tib.eu/media/57599
| null |
https://tib.flowcenter.de/mfc/medialink/3/decf84c023c2651448527d32d3ed4a2c7cb922a4ca78a5765fefb25efbb7a35327/MOOD_Science_webinar_MehtabSYED_May2022.mp4
|
2022
|
Computer Science
|
Conference/Talk
|
Syed Mehtab Alam is doing his PhD on topic “Generic methods for epidemiological monitoring based on the integration of heterogeneous textual data” funded by H2020 MOOD project. His PhD work focuses on the development of generic methods in order to extract new and relevant event in heterogeneous data textual in a One Health context. Previously, he was Research Associate in University of Bozen-Bolzano, Italy in which he mainly contributed in European funded project “COCkPiT” from 2018-2020. Since 2010, he was a part of different software organizations in which he was involved in different software development project across different domains i.e. Healthcare, European Taxi Systems, Mobile TV systems etc. The presentation is about the importance of relative spatial information (RSI) in EBS. Mehtab described the approach to extract RSI from different unofficial media sources and how to accurately geographically map this information for different events in EBS.
|
English
|
10.5446/57599 (DOI)
|
CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Syed, Mehtab Alam
| null |
Integrated management of Project, Funding and Research Data
|
https://av.tib.eu/media/57543
| null |
https://tib.flowcenter.de/mfc/medialink/3/de96ad0ccc69ac231d778bd8dfcca097a51582148133b1f81c0cef414aa70987d5/DSpace_Praxistreffen_2022-day2-13-Management_of_project_funding_and_research_data.mp4
|
2022
|
Information Science
|
Conference/Talk
|
BORIS project, based on DSpace-CRIS, is about: -a customized workflow for projects, interoperability with internal project management, and link to project investigators and project results. -custom managing of Documents for Projects, Funding and Datasets Integrations: -Integrate UniBE HR application (PARIS) to synch Researchers and Organizations -Integration datasets with Publication portal
|
English
|
10.5446/57543 (DOI)
|
CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Eterovic, Maje
Müller, Markus
Suntharam, Sumanghalyah
Verdicchio, Dirk
Bollini, Andrea
Fazio, Riccardo
Mornati, Susanna
|
Becker, Pascal (Moderation)
|
Fraunhofer Publica - GoLive with DSpace CRIS7
|
https://av.tib.eu/media/57544
| null |
https://tib.flowcenter.de/mfc/medialink/3/de847a2d566f1906a71bc85856445699e5804d9527176710c7c250dcb53f90140d/DSpace_Praxistreffen_2022-day2-12-Go_Live_with_DSpace_CRIS_7.mp4
|
2022
|
Information Science
|
Conference/Talk
|
The migration from the current Fraunhofer-Publica repository to a Research Information Management System enables the system to extend the scope. It provides more entities, the linking and navigation among them, and the connectivity/interoperability to internal systems. We would like to focus on following customizations: -configurable workflow: how it’s been possible to use the dspace configurable workflow in order to meet needs of the Fraunhofer Publica project. -reserve a doi functionality: how an existing default dspace functionality (DOI reservation) can be customized and used in a different way -further Fraunhofer features eg. correction-request
|
English
|
10.5446/57544 (DOI)
|
CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Eisengräber-Pabst, Dirk
Fritze, Florian
Digilio, Giuseppe
Mornati, Susanna
Bollini, Andrea
|
Becker, Pascal (Moderation)
|
Welcome to the DSpace 7 Testathon
|
https://av.tib.eu/media/57555
| null |
https://tib.flowcenter.de/mfc/medialink/3/dee682a8aecbbab455293f83598a2c6478260ceb9d3bc3bf43998832fc1bc7e9ed/4_Luyten_Atmire.mp4
|
2022
|
Information Science
|
Conference/Talk
|
Bram Luyten wirbt auf dem DSpace Anwendertreffen 2021 für eine Beteiligung am DSpace 7 Testathon.
|
English
|
10.5446/57555 (DOI)
|
CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Luyten, Bram
|
Becker, Pascal (Moderation)
|
Analytics & Reporting at different levels for a CRIS based on DSpace
|
https://av.tib.eu/media/57557
| null |
https://tib.flowcenter.de/mfc/medialink/3/debde830eb077ee4108bbbbb8654aa09ee3bb0e1900864a26bf10f2d302d0b1ce0/DSpace_Praxistreffen_2022-day2-10-Analytics_and_reporting_DSpace_CRIS.mp4
|
2022
|
Information Science
|
Conference/Talk
|
4Science was awarded a contract from the Consejo Nacional de Ciencia, Tecnología e Innovación Tecnológica (Concytec) for the development of the National Platform #PeruCRIS, based on DSpace-CRIS and funded by the World Bank. In the context of the project, a very sophisticated solution was developed for the analytics and reporting functions. This solution provides DSpace-CRIS with a powerful set of tools for data analysis, reporting and visualization, based on a combination of state-of-art and open-source technologies OpenSearch, SuperSet and Dremio.
|
English
|
10.5446/57557 (DOI)
|
CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Bollini, Andrea
|
Becker, Pascal (Moderation)
|
Plone Conference 2021 - Volto Addons Development Part 2
|
https://av.tib.eu/media/50118
| null |
https://tib.flowcenter.de/mfc/medialink/3/de07f11fd8dbe97ceb6a8ddc6c60fb84d41efda92bdc7302c647f8ccdb3c44d173/Volto_Addons_Development_Part_2.mp4
|
2021
|
Computer Science
Mathematics
Physics
|
Conference/Talk
|
Learn how to quickly develop a real-world Volto addon, learn how to structure your code to make it simple, reusable and provide extensible components.
|
English
|
10.5446/50118 (DOI)
|
CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Ichim, Tiberiu
| null |
The Test-field method - a powerful tool for extracting turbulent transport coefficients
|
https://av.tib.eu/media/57497
| null |
https://tib.flowcenter.de/mfc/medialink/3/de98c957b241511ebb1e59f39d50c2fe7de5e0a37f648bd783a913f08c38156f80/02_Gressel.mp4
|
2022
|
Mathematics
|
Conference/Talk
Workshop/Interactive Format
|
The interstellar medium of the Milky Way and nearby disk galaxies harbours large-scale coherent magnetic fields of Microgauss strength, that can be explained via the action of a mean-field dynamo. As in our previous work, we aim to quantify dynamo effects that are self-consistently emerging in realistic direct magnetohydrodynamic simulations, but we generalise our approach to the case of a non-local (non-instantaneous) closure relation, described by a convolution integral in space (time). To this end, we leverage our comprehensive simulation framework for the supernova-regulated turbulent multi-phase interstellar medium. By introducing spatially (temporally) modulated mean fields, we extend the previously used test-field method to the spectral realm -- providing the Fourier representation of the convolution kernels. The resulting spectra of the dynamo mean-field coefficients that we obtain broadly match expectations and allow to rigorously constrain the degree of scale separation in the Galactic dynamo.
|
English
|
10.5446/57497 (DOI)
|
CC Attribution - NonCommercial - NoDerivatives 3.0 Germany:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Gressel, Oliver
|
Elstner, Detlef
|
Fiber reinforced polymers - half the weight, but double the modelling effort
|
https://av.tib.eu/media/57498
| null |
https://tib.flowcenter.de/mfc/medialink/3/de6e6b51fe2ed36312f6108d31a8d05a7d01a3ef7a6799555e5e880e23d75e74e6/03_May.mp4
|
2022
|
Mathematics
|
Conference/Talk
Workshop/Interactive Format
|
Fiber reinforced polymers (FRPs) are ideal lightweight materials that can play a key role in, sustainable mobility, harvesting of natural energy resources, assisted living, and cutting edge medical technologies. However, high production costs are often still a main obstacle for broad industrial application. Robust design of the manufacturing processes and efficient analysis methods are an essential requirements in order to achieve economical implementation. Today, this is usually enabled by numerical simulations of the material behavior and their manufacturing processes. In this keynote talk, we showcase the areas of fiber reinforced polymer composites where numerical simulations have been implemented in order to gain a deeper understanding into their processing and physical behavior. From simulations of FRP manufacturing processes, to virtual material characterization at the micro and meso-scale as well the design of smart structures and their analyses using novel techniques.
|
English
|
10.5446/57498 (DOI)
|
CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
May, David
|
Duhovic, Miro
Gurka, Martin
|
The MaRDI portal for mathematical research data
|
https://av.tib.eu/media/57499
| null |
https://tib.flowcenter.de/mfc/medialink/3/de8f2c76f35a0501d23a300b3a7d56d19c377f2ee6526211c96d320aa5c63e0fe7/04_Nolte.mp4
|
2022
|
Mathematics
|
Conference/Talk
Workshop/Interactive Format
|
Mathematical research data (MRD), arising in many scientific fields, encompass widely different types of data and can be vast and complex, e.g., numerical data sets, mathematical expressions, algorithms, etc. The NFDI MRD Initiative (MaRDI) aims to define standards for MRD, to design verifiable workflows and to provide services to the scientific community. The services will be bundled in a web portal, allowing researchers to easily find and access mathematical research data, knowledge and services. In addition, the portal will offer storage capacities and host services for workflow and algorithm execution. At the core of the portal lies a mathematical knowledge graph which organizes and interconnects data from multiple sources. The main contribution of the portal is providing a unified entry point to access scattered and unconnected data. This talk gives an overview of the current status and planned features of the portal, and its value for the mathematical community.
|
English
|
10.5446/57499 (DOI)
|
CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Nolte, David
| null |
Overview and discussion of the progress of math search technologies
|
https://av.tib.eu/media/57500
| null |
https://tib.flowcenter.de/mfc/medialink/3/decd198d08ad9bcc264a933d33b5fb154b02a5079bef9c91d967aad9abd8cdf682/05_Stegmueller.mp4
|
2022
|
Mathematics
|
Conference/Talk
Workshop/Interactive Format
|
The number of scientific publications containing mathematical expressions is immense and constantly growing. For example, zbMATH Open, the world's longest-running abstracting and review service for mathematical content, indexes over 160 million formulas. Mathematical formula search is a core technology for finding scientific documents where formulas are defined as input. Since the introduction of many mathematical search systems in the NTCIR Math-Task series from 2013, there have been further advances and implementations of formula search. In the first 15 minutes of our talk, we want to provide an overview of current methods of formula search and related applications. According to the FAIR principles, we will emphasize aspects of reusability and accessibility here. Then, for the next 10 minutes, we intend to reach out to the audience and have a lively discussion on the planned efforts and experiences of the community with formula search.
|
English
|
10.5446/57500 (DOI)
|
CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Stegmüller, Johannes
| null |
Data-Enabled Predictive Control
|
https://av.tib.eu/media/57501
| null |
https://tib.flowcenter.de/mfc/medialink/3/dec009c76412c102b85206938050e396eb193daf0ebfc2e07507fa68a8afcd3ae6/06_Doerfler.mp4
|
2022
|
Mathematics
|
Conference/Talk
Workshop/Interactive Format
|
First 2:38 minutes of video does not have audio.
|
English
|
10.5446/57501 (DOI)
|
CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Dörfler, Florian
| null |
Stochastic geometry and telecommunication networks
|
https://av.tib.eu/media/57502
| null |
https://tib.flowcenter.de/mfc/medialink/3/de49bf68376e1843dfe4657005fc394a024017034e10619502627df08fe8898e38/07_Jahnel.mp4
|
2022
|
Mathematics
|
Conference/Talk
Workshop/Interactive Format
|
Spatial device-to-device communications are expected to play a key role in future communication systems. Their often high complexity can, at least in part, be modelled with the help of a probabilistic approach, where the network components are considered to be a stochastic point process. In this talk, I will introduce some of the most important ingredients in the theory of stochastic geometry, and present examples on how we use them to study for example malware propagation in device-to-device networks or bottleneck behavior for the connectivity in such networks.
|
English
|
10.5446/57502 (DOI)
|
CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Jahnel, Benedikt
| null |
An Atomistic View On Protein Adsorption to Interfaces and the Importance of Wettability on Drop Break-up in a Capillary Confinement from a Fluid-Dynamic Perspective
|
https://av.tib.eu/media/57504
| null |
https://tib.flowcenter.de/mfc/medialink/3/de8f64c3538c55834d287769638ac06a4907394907cc9760a8127b8847fd60a98a/09_Giefer.mp4
|
2022
|
Mathematics
|
Conference/Talk
Workshop/Interactive Format
|
Emulsions are widely used in a variety of different industries and applications with increasing importance. Two main objectives need to be addressed in the emulsion formulation: The emulsion needs to be formed with a narrow and predefined size distribution and it needs to be stabilized to prevent coalescence and therefore facilitate handling of the emulsion. So far the breakup mechanism of droplets in Membranes is still unknown. Further the role of proteins on breakup mechanism due to their interfacial adsorption and induces change in wettability needs to be addressed. In this work Molecular Dynamic simulations were performed to give an insight on protein adsorption to oil/water and water/SIO2 interfaces to understand which role Proteins play in this context. Furthermore Computational Fluid Dynamics were conducted to clarify the breakup mechanism in capillary confinements under varying fluid properties as well as membrane wettability. The results show that the proteins not only adsorb to fluid/fluid but also fluid/solid interfaces and therefore change the properties of the membrane. From the fluid-dynamic perspective membrane wettability plays a major role on the droplet dispersion as well as in the emergence of fluid dynamic instabilities that eventually lead to breakup.
|
English
|
10.5446/57504 (DOI)
|
CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Giefer, Patrick
|
Fritsching, Udo
|
On reducing spurious oscillations in discontinuous Galerkin methods for convection-diffusion equations
|
https://av.tib.eu/media/57505
| null |
https://tib.flowcenter.de/mfc/medialink/3/dec02f8493aea4b89947b184cdca8be6c20803cdeb121a09ec858187fdd94bbefc/10_Frerichs.mp4
|
2022
|
Mathematics
|
Conference/Talk
Workshop/Interactive Format
|
Approximating the solution of convection-diffusion equations in the convection-dominated regime by standard methods usually lead on affordable grids to unphysical values, so called spurious oscillations. Standard discontinuous Galerkin methods are known on the one hand to produce sharp layers but on the other hand are also not able to prevent the pollution of the solution. This talk introduces a post-processing method that uses so called slope limiter to automatically detect regions where the solution is polluted and to correct the solution in these regions. Several slope limiting techniques are presented and tested on two standard benchmark problems.
|
English
|
10.5446/57505 (DOI)
|
CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Frerichs-Mihov, Derk
| null |
Solar and stellar activity: Mean field models and direct numerical simulations
|
https://av.tib.eu/media/57507
| null |
https://tib.flowcenter.de/mfc/medialink/3/de24dd84b7b7d1d0075c5c5ea9a397799585065e514d0b3b22f3b15ed412299d9fc0/12_Kueker.mp4
|
2022
|
Mathematics
|
Conference/Talk
Workshop/Interactive Format
|
Mean field magnetohydrodynamics is a theoretical framework that uses averaged versions of the induction equation and the equation of motion to model large-scale gas flows and the generation of large-scale magnetic fields in astrophysical bodies. This method is computationally cheap and has been used with some success in astrophysics but requires a theory of the effect of the small scale gas motions on the large scale motions and magnetic field. More recently, advances in high performance computing have made direct numerical simulations feasible. We show results from both approaches.
|
English
|
10.5446/57507 (DOI)
|
CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Küker, Manfred
| null |
A Normal Form for Grid-Forming Actors in Power Grids
|
https://av.tib.eu/media/57509
| null |
https://tib.flowcenter.de/mfc/medialink/3/de4e9a27f969892e3c2d8ad46ede6f4634b1c038aeb69ef73d28faf5369df5cdff/14_Plietzsch.mp4
|
2022
|
Mathematics
|
Conference/Talk
Workshop/Interactive Format
|
Future power grids will be operating a large number of heterogeneous dynamical actors. Many of these will contribute to the fundamental dynamical stability of the system, and play a central role in establishing the self-organized synchronous state that underlies energy transport through the grid. We derive a normal form for grid forming components in power grids, that allows analyzing the grids systemic properties in a technology neutral manner, without detailed component models. We provide a first experimental validation that this normal form can capture the behavior of complex grid forming inverters without any knowledge of the underlying technology, and show that it can be used to make technology independent statements on the stability of future grids.
|
English
|
10.5446/57509 (DOI)
|
CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Plietzsch, Anton
| null |
Synchronization Transitions in Systems of Coupled Phase Oscillators
|
https://av.tib.eu/media/57510
| null |
https://tib.flowcenter.de/mfc/medialink/3/de4d7288fe414e3910a16c64089fc927dc35662e6f4dc72166c2268e3157e111f7/15_Wolfrum.mp4
|
2022
|
Mathematics
|
Conference/Talk
Workshop/Interactive Format
|
We investigate the synchronization transitions in systems of coupled Kuramoto-Sakaguchi phase oscillators. We show that in globally coupled systems with certain unimodal frequency distributions, there can appear unusual types of synchrony transitions, where synchrony can decay with increasing coupling, incoherence can regain stability for increasing coupling, or multistability between partially synchronized states and/or the incoherent state can appear. In one-dimensional arrays of oscillators with non-local coupling one can observe at the onset of synchrony the emergence of collective macroscopic chaos as an intermediate stage between complete incoherence and stable partially coherent plane waves. In both cases, the phase lag in the interaction function plays an important role for the observed phenomena.
|
English
|
10.5446/57510 (DOI)
|
CC Attribution 3.0 Germany:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
|
Wolfrum, Matthias
| null |
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