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The quantum anomalous Hall (QAH) effect can be considered as the quantum Hall (QH) effect without external magnetic field, which can be realized by time reversal symmetry breaking in a topologically non-trivial system. A QAH system carries spin-polarized dissipationless chiral edge transport channels without external energy input, hence may have huge impact on future electronic and spintronic device applications with ultralow-power consumption. The many decades' quest for the experimental realization of QAH effect received a boost in 2006 with the discovery of topological insulators (TIs). In 2013, the QAH effect was observed in thin films of Cr-doped TI for the first time [1]. In 2015, a near ideal system in V-doped TI, contrary to the expectation of first principle calculations, was demonstrated to show extremely high-precision QAH quantization with more robust magnetization and higher Curie temperature [2]. In this talk, I will introduce the route to the experimental observation of the QAH effect in above-mentioned two systems [1,2], and discuss the zero magnetic field dissipationless edge mode and the origin of the dissipative channels in the high-precision QAH state [3]. Finally I will outline the prospects and the barriers of a viable QAH-based device.
[1] Cui-Zu Chang et al, Science 340, 167(2013).
[2] Cui-Zu Chang et al, Nature Materials 14, 473(2015).
[3] Cui-Zu Chang et al, Physics Review Letters 115, 057206 (2015).
In most systems that exhibit order at low temperatures, the order occurs in the elementary degrees of freedom such as spin or charge. Prominent examples are magnetic or superconducting states of matter. In contrast, emergent order describes the phenomenon where composite objects such as higher order correlation functions exhibit longer range correlations. This can appear even though the elementary objects remain short-range ordered. One specific example are frustrated magnets, where long-range discrete order in the relative orientation of spins may occur in the absence of magnetic order. This can induce other phase transitions as is the case for the nematic transition in the iron pnictides. In my talk, I will focus on algebraic "critical" correlations of an emergent Z6 clock order parameter in an isotropic Heisenberg antiferromagnet on the windmill lattice, which consists of interpenetrating honeycomb and triangular lattices. This is surprising as the interaction of the Goldstone modes present in Heisenberg systems usually causes the spin-wave stiffness to renormalize to zero on long scales. Here it occurs due to the decoupling of an emergent collective degree of freedom given by the relative phase of spins on different sublattices. We establish this result and the formation of an extended critical phase at intermediate temperatures both using an analytical renormalization group analysis based on the Ricci flow and large-scale classical Monte-Carlo simulations. Our results also reveal that both phase transitions, which bracket the critical phase, lie in the Berezinskii-Kosterlitz-Thouless universality class.
Recently, there has been growing interest in electronic systems that exhibit both strong spin-orbit coupling and strong electron correlations. These systems combine two central threads of modern quantum materials research: correlated electron physics that underlies phenomena such as high-Tc superconductivity, and spin-orbit physics that describes systems such as topological insulators. When these two interactions compete at the same energy scale in a material, fundamentally new quantum phenomena have been predicted to emerge. Recently, an experimental platform with this rare interaction regime has been realized for the first time in 5d transition metal oxides such as iridium oxides. In this talk, I will focus on one specific member of this family Sr2IrO4 that has received much attention due its striking similarities to the cuprate high-Tc superconductors. I will describe a new nonlinear optical spectroscopy technique that enabled us to find an unusual hidden magnetic ordered phase in the Sr2IrO4 system. I will discuss the potential relevance of this novel phase to superconductivity in both iridates and cuprates.
We present a controlled microscopic study of hole dynamics in both a gapped and a gapless spin liquid. Our approach is complementary to previous phenomenological works as we introduce mobile holes into the spin liquid ground state of the exactly solvable Kitaev honeycomb model. In the gapped phase of the model, we address the single-particle properties of individual holes (such as their particle statistics and hopping properties) and the multi-particle ground state at a finite density of holes. Our main result is that the holes possess internal degrees of freedom as they can bind the fractional excitations of the spin liquid and that the resulting composite holes with different excitations bound are distinct fractional particles with fundamentally different single-particle properties and different experimental signatures in the multi-particle ground state. In the gapless phase of the model, we consider a single hole and address the possibility of a coherent quasiparticle description by investigating its spectral function. We employ a variational treatment and also study a simplified one-dimensional problem to argue that a mobile hole has a finite quasiparticle weight which vanishes in the stationary limit.
Low dimensional systems, such as atomically thin materials and material interfaces, offer a rich ground to discover new types of electronic states. Spatially resolved electrical probes provide direct access to these states on the mesoscopic scale, complementing conventional transport techniques. In this talk, I will present two comprehensive studies on 2D electronic states employing Microwave Impedance Microscopy (MIM), a scanning probe technique that senses materials' capacitance and conductivity on the nanoscal. The first study investigates magnetic domain walls in a unique all-in-all-out magnetic insulator, Nd2Ir2O7. Through a combined study of MIM, transport, and X-ray micro-diffraction, we conclusively show that metallic states emerge at the magnetic domain walls when the all-in-all-out magnetic order forms with a concomitant metal-insulator transition occurring in the bulk. This represents a new type of interface electronic states in a both chemically and structurally homogeneous material. The second study examines the canonical "edge state" picture of the quantum Hall (QH) effect in graphene. To our surprise, we find an unconventional edge-bulk correlation in graphene devices: the QH transport plateaus occur before the bulk Landau levels are completely filled. This result has implications in both QH transport analysis as well as understanding of general edge transport behaviors in other 2D topological systems.
A central theme of modern condensed matter physics is to discover and understand emergent phenomena in quantum materials. These phenomena emerge only through the collective behavior of electrons due to their mutual interactions as well as interactions with other degrees of freedom inside the materials. In this talk, I will give two examples of the emergent phenomena which I have been studying with angle-resolved photoemission spectroscopy in recent years. The first one is the negative electronic compressibility. I will present our evidence for the first experimental case of such phenomenon in a bulk material—the electron-doped iridate—and discuss the obtained insights into its microscopic origin, which heralds an uncharted territory of negative compressibility research that potentially features a whole variety of bulk quantum materials. The second example is the pseudogap phenomena. I will show how our view about the nature of these phenomena in hole-doped cuprate superconductors has evolved in the past two decades and been finally converging into one that they signal a phase of matter which is fundamentally distinct from superconductivity and characterized by multiple broken symmetries. I will discuss our results contributing to this development as well as their implications particularly regarding the broken translation symmetry aspect of the still-mysterious pseudogap phase.
Confined spins in semiconductors are a versatile platform for exploring quantum information processing and condensed matter physics. Individual spins can have coherence times exceeding seconds in some cases, making them promising quantum bits, or qubits, and also highly sensitive probes of their local electric and magnetic environments. I will discuss recent work exploiting the joint spin-state of two electrons in a GaAs double quantum dot as a "singlet-triplet" qubit. We perform high-fidelity single- and two-qubit gates with this architecture. We also use the qubit as a sensor to precisely measure its magnetic environment, which results from the statistically fluctuating nuclear spins in the semiconductor crystal. Using these measurement techniques, we extend the qubit coherence time by more than two orders of magnitude through adaptive control, and we uncover the surprisingly strong effect of spin-orbit coupling on electron-nuclear dynamics in GaAs.
A handy way to tell what's inside a black box is to give it a good shake. Similarly it is often a good idea to bring a system far from equilibrium to understand its inner workings.
This talk mainly focuses on the results of ultrafast optical spectroscopy on Na2IrO3, a frustrated Mott insulator with strong spin-orbit coupling. Our results indicate that there is a distinct change in the non-equilibrium behavior of excitations as the system becomes magnetically ordered at low temperatures. Specifically, we observe that in the disordered phase the transient response is due to both bound "Hubbard excitons" and unpaired single particles, whereas in the ordered phase the single particle contribution becomes strongly suppressed. This is an indication of an increase of binding energy of Hubbard excitons which we argue is due to unique interplay between the strong frustrated Kitaev term and the weak Heisenberg-type ordering term in the Hamiltonian. In this regime magnetic ordering gives rise to an effective attraction between charged excitations which grows with distance causing them to become trapped within the excitons in analogy with quark confinement inside hadrons.
In cuprate high-temperature superconductors, an antiferromagnetic Mott insulating state can be destabilized toward unconventional superconductivity by either hole or electron doping. Besides these two phases, in hole-doped cuprates a periodic distribution of the electronic density, or charge order (CO), was recently detected in the Y-based family [1], and echoed the long-known presence of stripe order in the La-based cuprates [2]. However, at that point, the universality of the CO phenomenon to the cuprates remained to be determined.
In this talk I will first discuss a novel combined scanning tunneling microscopy (STM) and resonant X ray scattering (RXS) experimental approach that established the formation of CO in the high-temperature superconductor Bi2Sr2CaCu2O8+x (Bi-2212) [3]. The CO in this system occurs with the same period as those found in Y-based or La-based cuprates and displays the analogous competition with superconductivity, therefore establishing its commonality to hole-doped cuprates. Still, the universality of charge order remained in question, with several experiments and theories pointing to hole-doping as a critical ingredient to its formation.
Here I will also present RXS measurements that demonstrated for the first time the presence of charge order in the electron-type cuprate Nd2-xCexCuO4 (NCCO) [4]. A comprehensive study of CO in NCCO as a function of doping, temperature, and magnetic fields, shows that CO does not require a pseudogap precursor state. We also find that while CO is universal to all cuprates, its interplay with superconductivity and antiferromagnetism is not. Finally, open questions in the field, as well as prospects for future experiments, will also be discussed.
[1] G. Ghiringhelli, et al. Science 337, 821 (2012).
[2] J. M. Tranquada, et al. Nature 375, 561 (1995).
[3] E. H. da Silva Neto, et al. Science 343, 393 (2014).
[4] E. H. da Silva Neto, et al. Science 347, 282 (2015).
[5] E. H. da Silva Neto, et al. in preparation (2016).
"Motivated by the persistent doping problems plaguing the seminal topological "insulator" Bi_2Se_3, we have developed an apparatus capable of thin film growth combined with in situ, real time transport measurements, which has provided insight into gaining ready access to the topological regime. We have extended this success to studying the topological Dirac semimetal Na_3Bi, whose reactivity to ambient prohibits the use of conventional sample preparation techniques. Our thin film samples have low temperature mobilities in excess of 6,000 cm^2/Vs. Perpendicular magnetoresistance up to 1T shows unusually large quadratic behavior with weak anti-localization at low field. I will discuss our latest efforts to understand our results in terms of spatial charge inhomogeneity."
Intriguing phase behaviors of correlated electrons have been a subject of major research interest over the past half a century, and they are all realized in a framework in which the electrons constantly interact with their hosting crystal lattice. As a result, not only does electrons' footprint on the lattice help us on the detection of various electronic phases, but the explicit consideration of electron-phonon interactions may be necessary in order for us to thoroughly understand the collective behavior of the electrons.
In this talk, I will present a series of studies aiming to elucidate the role of electron-phonon interactions in electron correlations, using Raman scattering as the primary tool in conjunction with complementary techniques. I will first discuss how electron-phonon interactions, primarily in the form of dynamic magnetoelastic coupling, can be utilized to elucidate the genuine phase boundary and physical origin of the electronic nematic phase in iron-based superconductors. Then I will take a detour to a conventional charge-density-wave material and show that the momentum dependence of electron-phonon interactions is crucial for a quantitative understanding of charge ordering behavior even in the simplest case. This brings up the idea whether it is possible to enhance the interactions between conduction electrons and phonons in particularly important momentum regions, if the material also possesses local-moment magnetism on the back side of the same coin from the Fermi-liquid quasiparticles. Indeed we have found that in a structurally simple spiral magnet, the interaction between phonons and local-moment magnetism gives rise to hybrid magnetoelastic excitations, or "magnetophonons", at the dispersion intersections between phonons and magnons. How such emerging excitations might affect conduction electrons or even mediate Cooper pairing in unconventional superconductors will be discussed.
After an introduction, in the first part of the talk, I discuss a new fermionic functional renormalization group variant for two-dimensional lattice models that combines a physically appealing truncation of the wavevector dependence of the running interactions with certain numerical advantages. This allows for an efficient parallelized evaluation in which, e.g., the convergence of the expansion can be checked. In the second part of talk, I present new results on a model for iron superconductors that show that nematic orbital ordering occurs in different forms as competitor but also concomitant ordering tendency to the more conventional antiferromagnetic ordering and spin-fluctuation-induced pairing at low energies.
We consider the two-dimensional electron gas confined laterally to a narrow channel. As the Zeeman splitting matches the inter-subband splitting due to the geometrical quantization, the non-local spin polarization develops a minimum as reported by Frolov et al. [Nature (London) 458, 868 (2009)]. This phenomenon termed Ballistic Spin Resonance is due to the degeneracy between the nearest oppositely polarized sub-bands lifted by spin-orbit coupling. The resonance survives the weak and short-range interaction. The latter detunes it and as a result shifts the Zeeman splitting at which the minimum in spin polarization occurs. The shift is attributed to the absence of Kohn theorem for the spin sloshing collective mode. We characterized the shift due to weak interaction quantitatively by analyzing the spin sloshing mode phenomenologically.
I will discuss scanning tunneling microscopy (STM) measurements of electronic nematicity in the iron pnictide superconductors, focusing on the compound NaFeAs. I will show that a clear signal of the electronic nematicity can be seen in the local density of states as measured by STM. Questions that can be answered from the STM measurements include (a) do magnetic or structural degrees of freedom drive nematicity (b) how can we distinguish between true long range order and a strong susceptibility using STM measurements (c) where in the phase diagram are nematic order and fluctuations observed (d) what is the energy scale associated with nematicity at different points in the phase diagram (e) what is the relationship between nematicity (either order or fluctuations) and superconductivity. I will discuss answers to all of these questions, and along the way discuss new STM techniques that we have developed for this purpose that are broadly applicable to other quantum materials.
In the thirty years since the discovery of quasicrystals by Dan Shechtman there has been tremendous progress in our understanding of the structure of quasicrystals and aperiodic systems in general. Indeed, the question first asked by Per Bak soon after Shechtman's discovery, "Where are the atoms?", can largely be answered for at least one class of quasicrystals, the i-YbCd5.7 icosahedral phase. Progress in our understanding of the consequences of aperiodicity for physical phenomena such as the electronic, magnetic, and optical properties has lagged somewhat but we have recently seen a surge of activity and new results. On the magnetism front, the discovery of a new family of magnetic quasicrystals and their closely related crystalline approximants, has allowed for a direct comparison of the impact of aperiodicity on magnetic interactions in compounds that have similar local structures.
Examples of stable binary icosahedral quasicrystals are quite rare and, before the discovery of icosahedral quasicrystals in the i-R-Cd system (R = Gd to Tm, Y), there were no known examples that featured localized magnetic moments. Local-moment-bearing binary quasicrystals represent the compositionally simplest system for the study of magnetic interactions in aperiodic compounds and, therefore, the new R-Cd quasicrystal family will play a key role in these studies, offering non-magnetic, Y, Heisenberg-like, Gd, and non-Heisenberg (CEF split) Tb to Tm members, in addition to the structural and compositional simplicity of a binary phase. Furthermore, the existence of a corresponding set of cubic approximants, RCd6, to the icosahedral phase allows for direct comparisons between the low- temperature magnetic states of crystalline and quasicrystalline phases with fundamentally similar local structures. RCd6 may be described as a body-centered cubic packing of the same clusters of atoms as found in the newly discovered icosahedral phase. Using x-ray resonant magnetic scattering we have shown that the RCd6 approximants manifest long-range magnetic order at low temperatures, whereas the related icosahedral phase exhibits only spin-glass-like freezing at low temperatures. In order to understand the reason for the absence of long-range magnetic ordering in the quasicrystalline phase, we have recently completed a full structural refinement of the i-R-Cd system (R = Gd, Dy) series and are in the midst of both elastic and inelastic neutron scattering measurements of i-Tb-Cd. Our results, to date, will be described and discussed.
Superconducting circuits offer a compelling platform for investigating light-matter interactions inaccessible to conventional atomic systems. Aided by the low-dimensionality and low loss of such circuits, here we experimentally investigate how changing the properties of the electromagnetic vacuum modifies atomic fluorescence. We strongly couple microwave-frequency squeezed light to a superconducting artificial atom and detect the resulting fluorescence with high resolution using a near-quantum-limited parametric amplifier. We observe a dramatic dependence of the spectrum of resonance fluorescence on the relative phase of the driving and squeezed vacuum fields and observe subnatural radiative linewidths that indicate up to 3.1 dB of squeezing below the ordinary vacuum level in the artificial atom's environment [1]. Our results both validate the canonical predictions for resonance fluorescence in squeezed vacuum and provide a circuit architecture for investigating high-precision superconducting qubit measurement with squeezed input light.
[1] D.M. Toyli, A.W Eddins, et al., arXiv:1602.03240
Two key symmetries underlie the formation of superconductivity: parity and time reversal. These symmetries lead to the usual description of superconductivity in terms of pseudo-spin 1/2 fermions. Strong spin-orbit coupling plays an essential role in defining pseudo-spin and, we show, also allows for the intriguing possibility of pseudo-spin 3/2 fermions. In this talk, after a discussion on the role of symmetry on superconducting pairs, I will contrast the physics for pseudo-spin 1/2 and pseudo-spin 3/2 pairing with an emphasis on the topological half-heusler superconductors YPtBi and LuPtBi. These materials have recently been found to exhibit gapless excitations in the superconducting state. These materials also lack parity symmetry, and the general consequences of this for both pseudo-spin 1/2 and pseudo-spin 3/2 pairing will be highlighted throughout the talk.
Majorana fermions (non-Abelian anyons) appear as edge states in the topological phase of the Kitaev wire, and are naturally immune to static disorder. I discuss the effects of a classical noise ("time-dependent disorder") on the Majorana edge correlations, and on the fidelity of braiding operations for both global and local noise in the chemical potential. While in general noise will induce heating and dephasing, it is still possible to have long-lived quantum correlations in the presence of fast noise due to motional narrowing, even when the noise drives the system rapidly between the topological and non-topological phases.
I will explore electronic band structure of various group III-V semiconductor nanowires using electrical transport and photocurrent spectroscopy on photo-lithographically contacted single nanowire devices. The nanowires were grown by MOCVD technique where the growth was initiated by a 50-100 nm gold catalyst which determines the diameter of the nanowire. Typically these nanowires are 4-6 µm long. Further, I will introduce a more complex GaAs/AlGaAs core-multishell heterosturucres, quantum well tube (QWT), where a thin GaAs layer was embedded inside a thick AlGaAs shell surrounding a 50 nm diameter GaAs nanowire core. Here I will present the nature of exciton localization in single GaAs/AlGaAs QWT nanowire devices using photocurrent (PC) spectroscopy combined with simultaneous photoluminescence (PL) and photoluminescence excitation (PLE) measurements at 10 K . Excitons confined to GaAs quantum well tubes of 8 nm and 4 nm widths embedded into an AlGaAs barrier are seen to ionize at high bias levels. Spectroscopic signatures of the ground and excited states confined to the QWT seen in PL, PLE, and PC data are consistent with numerical calculations. The demonstration of good electrical contact with the QWTs enables the study of Stark effect shifts in sharp emission lines of excitons localized to quantum dot-like states within the QWT. Atomic resolution cross-sectional TEM measurements and an analysis of the quantum confined Stark effect of these dots provide insights into the nature of the exciton localization in these nanostructures.
Recently, strain engineering of graphene's electronic properties has attracted significant attention [1]. I will report transport studies in graphene sheets with linearly-shaped strain regions created by nm-scale wide folds. We find that these strain regions act as quantum wires and waveguides. We attribute this to strain-induced pseudomagnetic fields acting as confining barriers. I will also discuss transport studies on coupled massive and massless electron systems, realized using twisted monolayer graphene/natural bilayer graphene stacks. Due to the interlayer screening, we observe a nonlinear monolayer gate capacitance. Moreover, in a perpendicular magnetic field, we observe a distinct pattern of gate-tunable Landau level crossings that enable the mass and Fermi velocity in the layers to be determined. We find different values than those of isolated layers, indicating that the interlayer interactions renormalize the band structure parameters. Additionally, novel physics in graphene under different external conditions, for example under one-dimensional (1D) periodic potentials [2] and aligned to boron nitride (BN) substrates, will also be reported. Our recent studies on natural few-layer graphene, including quantum Hall effect, Landau level transitions and new Dirac points [3] in ABA-stacked trilayer graphene will also be introduced.
[1] Nikolai N. Klimov, Suyong Jung, Shuze Zhu, Teng Li, C. Alan Wright, Santiago D. Solares, David B. Newell, Nikolai B. Zhitenev, and Joseph A. Stroscio. Electromechanical properties of graphene drumheads. Science, 336(6088):1557–1561, 2012.
[2] Cheol-Hwan Park, Young-Woo Son, Li Yang, Marvin L. Cohen, and Steven G. Louie. Electron beam supercollimation in graphene superlattices. Nano letters, 8(9):2920–2924, 2008.
[3] Maksym Serbyn and Dmitry A. Abanin. New dirac points and multiple Landau level crossings in biased trilayer graphene. Physical Review B,
87(11):115422, 2013.
We are all familiar with spontaneously broken symmetry: the north pole of a magnetic needle will be at one end or the other, not a superposition of the two. Conversely, can a system possess at low energies a symmetry that the bare Hamiltonian does not? I'll discuss a case where such a symmetry emerges in measurements of a nanopatterned system of electrons: a double quantum dot (Ref. 1).
Then I will tell how a similar system with no obvious symmetry can be tuned using voltage on nanoelectrodes to a quantum critical point with an exact theoretical description even at finite temperature (Ref. 2). The excitations of nearby mobile electrons at the critical point are collective and look nothing like individual electrons: this is a non-Fermi liquid. Tuning across the critical point, the crossover from one phase to the other through the quantum critical region turns out to have surprising universal properties (Ref. 3).
I hope that this approach to many-body systems and quantum phase transitions -- engineering and building an artificial realization of a well-defined Hamiltonian, then probing its properties experimentally -- will drive theoretical and computational efforts, and ultimately will help us understand the richness of electronic materials such as heavy fermion metals.
1. A. J. Keller, S. Amasha, I. Weymann, C. P. Moca, I. G. Rau, J. A. Katine, Hadas Shtrikman, G. Zaránd and D. Goldhaber-Gordon, "Emergent SU(4) Kondo physics in a spin-charge-entangled double quantum dot" Nature Physics 10, 145 (2014).
2. R. M. Potok, I. G. Rau, H. Shtrikman, Y. Oreg, and D. Goldhaber-Gordon, "Observation of the two-channel Kondo effect" , Nature 446, 167-171 (2007).
3. A. J. Keller, L. Peeters, C. P. Moca, I. Weymann, D. Mahalu, V. Umansky, G. Zaránd & D. Goldhaber-Gordon, "Universal Fermi liquid crossover and quantum criticality in a mesoscopic system," Nature 526, 237–240 ( 2015).
It is strongly believed that the quantum Hall fluid at filling factor \nu = ½ realizes the composite fermion liquid - an exotic phase of matter with emergent excitations - composite fermions - forming a Fermi-surface. The original theory of this state proposed by Halperin, Lee and Read (HLR) in 1993 is well supported by experiments. However, one aspect of HLR theory has continued to puzzle theorists for the past 20 years: an apparent lack of particle-hole symmetry expected to emerge in the lowest Landau level. Recently, D. Son has conjectured a surprising resolution of this puzzle, proposing that the composite fermion is a Dirac fermion. I will give a derivation of this conjecture by making a connection between the physics of a half-filled Landau level and the surface of a 3d topological insulator (TI). The derivation will proceed via a dual theory of the single Dirac cone on the TI surface, given by quantum electrodynamics (QED3) with a single dual Dirac fermion coupled to a fluctuating gauge field. Finally, I will present smoking-gun numerical evidence for the Dirac nature of the composite fermion coming from DMRG simulations of quantum Hall fluid at \nu = ½.
Symmetry protected topological (SPT) phases are generalizations of topological band insulators; they are quantum phases of matter with a bulk energy gap and characteristic edge or surface properties. Over the past few years, exciting progress has been made in the theory of SPT phases with strong interactions, and, separately, SPT phases with crystalline symmetry. The intersection of these two directions — strongly interacting crystalline SPT phases — has potential experimental relevance but remains rather poorly understood. In this talk, I will present a general framework to classify and characterize SPT phases protected by crystalline point group symmetry. The basic insight is that all such SPT phases can be reduced to lower-dimensional topological phases with internal symmetry. This leads to a physically transparent approach that is generally applicable to bosonic or fermionic systems in any spatial dimension, without regard to the strength of interactions. I will illustrate the key ideas via discussion of a few interesting examples.
Recently, strongly-correlated transition metal oxides, that exhibit first order metal-insulator transitions, have received renewed attention because they can be controlled and manipulated at the nanoscale to develop unique properties. Although the existence of these materials has been known for some time, the physical origin of many of these phenomena remains a very controversial issue. In addition, hybrid heterostructures allow the engineering of new material properties by creative uses of proximity effects. When two dissimilar materials are in close physical proximity the properties of each one may be radically modified or occasionally a completely new material emerges. By properly designing hybrid ferromagnet/oxides new magnetic properties arise unlike any known magnetic materials. I will describe the static and dynamical properties of strongly correlated nanostructured oxides, which exhibit metal-insulator transitions. These materials when reduced to the nanoscale exhibit interesting properties such as avalanches, unique response to disorder and critical slowing down in their fast time dependence. In a series of recent studies, we have investigated the magnetic properties of different hybrids of ferromagnets (Ni, Co and Fe) and oxides, which undergo metal-insulator and structural phase transitions. Both the static as well as dynamical properties of the ferromagnets are drastically affected. Static properties such as the coercivity, anisotropy and magnetization and dynamical properties are clearly modified by the proximity effect and give raise to interesting perhaps useful properties. The oxide work supported by the US-AFOSR and the magnetism aspects by the US-DOE. Work done in collaboration with many young researchers who will be individually credited.
The revolution started by the discovery of topological insulators a few years ago has turned out to be the proverbial tip of the much larger iceberg of exotic phases of quantum matter driven by spin-orbit coupling effects. Consideration of electronic states protected by time-reversal, crystalline and particle-hole symmetries has led to the prediction of many novel materials, which can support Weyl, Dirac and Majorana fermions, and to new types of insulators such as topological crystalline insulators and topological Kondo insulators, as well as quantum spin Hall insulators with large band gaps capable of surviving room temperature thermal excitations. [1] I will discuss our recent theoretical work aimed at predicting topological materials and identify cases where robust experimental evidence has been obtained toward their successful materials realization. [2-10] I will also comment on potential of topological materials as next generation platforms for manipulating spin and charge transport and other applications.
[1] Bansil, Lin and Das, Reviews of Modern Physics 88, 021004 (2016).
[2] Chang et al, Science Advances 2, e1600295 (2016).
[3] Huang et al., Proc. National Academy of Sciences 113, 1180 (2016).
[4] Zheng et al., ACS Nano 10, 1378 (2016).
[5] Xu et al., Science 349, 613 (2015).
[6] Zeljkovic et al., Nature Materials 14, 318 (2015).
[7] He et al., Nature Materials 14, 577 (2015).
[8] Xu et al., Nature Physics 11, 748 (2015).
[9] Crisostomo et al., Nano Letters 15, 6568 (2015).
[10] Xu et al., Science Advances 1, e1501092 (2015).
In several two-dimensional films that exhibit a magnetic field-tuned superconductor to insulator transition (SIT), stable metallic phases have been observed. An influential theory of the SIT involves disorderd bosons (Cooper pairs and vortices) in a magnetic field. Building on this `dirty boson' description of the SIT, we suggest that the observed metallic behavior near the SIT is analogous to the composite Fermi liquid observed about half-filled Landau levels of the two-dimensional electron gas. The composite fermions here represent composites of vortices and Cooper pairs. We describe several experimental consequences stemming from these fermionized vortices.
In a system of free electrons, both the Coulomb repulsion and quantum kinetic energies diminish as the electron density is decreased. Since the kinetic energy diminishes faster than the Coulomb energy, it becomes energetically favorable for electrons to localize into a crystal known as a "Wigner Crystal". In the case of 2D systems, applying a quantizing magnetic field favors crystal formation by further freezing out the kinetic energy into Landau levels. Theory predicts that a Wigner crystal of quasiparticles in a Landau level exists near integer quantum Hall states as an insulating phase with an expected transition temperature in the range of a few hundred millikelvin or below. As the state in insulating, it is very difficult to probe it. Using a refined pulsed tunneling method, capable of probing insulating phases, we are able to measure tunneling current directly into the electronic crystal. I will present high-resolution tunneling measurements that reveal very sharp structure arising from the vibrational spectrum of the spatially ordered electronic structure. This observation conclusively demonstrates the existence of a Wigner Crystal with long correlation length and opens the door to using tunneling to probe and detect a wide variety of ordered electronic phases. Finally, I will also show results from a related tunneling method that we have developed that permits quantitative determination of spectral function of the 2D electron system as a function of both energy and momentum.
Conventional electronic transport methods have been tremendously powerful in exploring systems with low lying charge excitations. In recent years there is growing interest in similar transport properties but of the spin degree of freedom, however, an analogous set of tools for spin transport currently does not exist. A grand challenge is therefore to develop spin analogues to voltage and current sources and meters which will allow us to explore both stationary and transient spin transport phenomena in a broad range of quantum materials. In this talk I will report on some of our efforts to develop such measurement capabilities using NV centers in diamond. Specifically I will report on recent measurements we have performed that explore magnetic textures in thin magnetic films and the spin chemical potential in magnetic insulators.
I will discuss quantum order-by-disorder effect and will present an evidence that the non-linear terms in the anisotropic kagome-lattice antiferromagnets can yield a rare example of the ground state that is different from the one favored by thermal fluctuations. The corresponding order selection will be shown to be generated by the topologically non-trivial tunneling processes, yielding a new energy scale in the system.
I will also discuss the effect of the non-linear terms in the spectra of the kagome-lattice systems and will provide an analysis of the spectral properties of realistic kagome-lattice antiferromagnets such as Fe-jarosite, for which a remarkable wipe-out effect for a significant portion of the spectrum should exist due to a resonant-like decay processes involving two flat modes.
Recent result concerning the spectrum of the kagome-lattice ferromagnets will also be presented.
I will show that Mott insulators with strong spin-orbit coupling and bond-dependent interactions host yet another strongly correlated regime, besides the well-known Kitaev quantum spin liquid [1]. This regime is governed by a classical spin liquid instability and unconventional spin-spin correlations along closed or open strings. The key predictions are common for all available 2D and 3D tri-coordinated materials with bond-directional anisotropy, and provide a consistent interpretation of the suppression of the x-ray magnetic circular dichroism signal reported recently [2] in β-Li2IrO3 under pressure.
[1] I. Rousochatzakis and N. B. Perkins, arXiv:1610.08463v1
[2] T. Takayama et al., Phys. Rev. Lett. 114, 077202 (2015).
The Hubbard model is one of the fundamental models of correlated electron physics. In two dimensions it exhibits various superconducting, Mott insulating, magnetically ordered, pseudogapped, and metallic phases. On a square lattice and for repulsive interactions comparable to the bandwidth, the model is believed to capture much of the low-energy physics of the cuprate high-temperature superconductors, while in three dimensions it can be realized experimentally in ultracold atomic gases. In this talk I will show results from `numerical experiment' on this model and compare them to experimentally obtained response functions and theoretical calculations, illustrating how simulations can be used to further our understanding of correlated electron systems.
We consider superconductivity suppression in homogeneously disordered thin films. Anderson's theorem stating that the critical temperature is insensitive to the degree of disorder is violated in the vicinity of the Anderson localization transition. For strongly disordered films, the interplay between disorder and interaction effectively suppresses the BCS coupling constant, thereby reducing the critical temperature. For strictly 2D films, superconductivity suppression is coming from large scales (similar to the 2D localization), and summation of the leading logarithms can be performed with the help of Finkelstein's renormalization group. For thicker and sufficiently dirty films, there exists an additional effect originating from small scales (similar to the 3D localization). We calculate the corresponding contribution to the shift of the critical temperature and discuss its importance in the context of experimental situation.
Recently, epitaxially connected at facets semiconductor
nanocrystals have been introduced to fascilitate the electron transport
between nanocrystals. To fully deploy their potential a better understanding
of the exciton transfer between connected NCs is needed. We go beyond the two
well-known transfer mechanisms suggested by Forster and Dexter and propose a
third mechanism of exciton tandem tunneling. The tandem tunnelling occurs
through the intermediate state in which electron and hole are in different
NCs. The corresponding rate for exciton hops between epitaxially connected
at small facets NCs is larger than the Dexter rate and can be comparable with
the Forster one.
Chiral-spin modes in a 2D Fermi-Liquid with spin-orbit coupling(SOC) are oscillations of magnetization in zero magnetic field resulting from a many-body effect. To study them, we develop a scheme to incorporate many-body effects in SOC systems. As a result, we discover a number of interesting features associated with SOC (of Rashba and Dresselahaus type). Since collective modes usually dominate the response to any probe they couple to, it is necessary to correctly formulate a theory that can express these modes in terms of the material parameters. I will show how our scheme does precisely this and highlight some unique features introduced by SOC, namely, a linear-in-q dispersion of a massive collective mode in an externally applied in-plane magnetic field, and a characteristic anisotropy of the mass with rotation of the in-plane field. Our interpretation is consistent with several observed features in a series of Raman experiments in CdMnTe quantum well (which were earlier interpreted as an indication of a strong renormalization of SOC by electron-electron interaction). We also offer predictions for other observables with/without the externally applied field.
Quantum vortices in weakly coupled superfluids have a large healing length, so that many particles reside within the vortex core. They are characterized by topologically protected singular points, which in principal should keep their core structure rigid. I will describe how, in practice, the point singularity of a vortex deforms into a line singularity, in proportion with the Magnus force experienced by the vortex. The vortex structure is described by weak solutions of the Gross-Pitaevskii equation, similar to shock waves in hydrodynamics. I will discuss how the core deformation significantly affects many aspects of vortex dynamics. A striking example I will describe is the instability of the Abrikosov vortex lattice in the weak-coupling limit. All vortex singularities in the lattice spontaneously deform into finite cuts, which then order into superstructures.
We analyze the superconducting instabilities in the vicinity of the quantum-critical point of an inversion symmetry breaking order. We first show that the fluctuations of the inversion symmetry breaking order lead to two degenerate superconducting (SC) instabilities, one in the s-wave channel, and the other in a time-reversal invariant odd-parity pairing channel (the simplest case being the same as the of 3He-B phase). Remarkably, we find that unlike many well-known examples, the selection of the pairing symmetry of the condensate is independent of the momentum-space structure of the collective mode that mediates the pairing interaction. We found that this degeneracy is a result of the existence of a conserved fermionic helicity, χ, and the two degenerate channels correspond to even and odd combinations of SC order parameters with χ = ±1. As a result, the system has an enlarged symmetry U(1) × U(1), with each U(1) corresponding to one value of the helicity χ. We discuss how the enlarged symmetry can be lifted by small perturbations, such as the Coulomb interaction or Fermi surface splitting in the presence of broken inversion symmetry, and we show that the resulting superconducting state can be topological or trivial depending on parameters. We present a global phase diagram of the superconducting states and discuss possible experimental implications.
The weekly calendar is also available via subscription to the physics-announce mailing list, and by RSS feed.


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Monday 06 November 2006 (11:57AM)
An expert system is a program that uses a set of rules to analyse information about a specific subject with a view to solving problems or giving advice. It emulates a human expert's problem solving ability by performing relevant tasks as well as, or better than, the expert. Often, the expert system will explain and justify its output and provide a measure of certainty in the appropriateness of the output. Furthermore, the output given by an expert system is, as is the case with humans, heuristic (a rule of thumb) rather than algorithmic (guaranteed to succeed).
Expert systems are incredibly useful tools. Traditional tasks have included:
I have already written an expert system in a previous role as Artitificial Intelligence developer for a (now out-of-business) software start-up. It was built to meet a very specific need in an even more specific way and made use of custom "in-house" tools for doing so.
This was a mistake that I do not intend repeating. The expert system I am about to write will be generic in scope and standards based. Delivered as a web-service via a simple API (Application Programming Interface) and a web-based user-interface I aim to make it a classic example of software as a service.
I envisage two types of users – providers and consumers:
The feedback I mention above will work in the same way as the review system on Amazon. It exists because consumers will need as much information as possible about the expertise they are buying without actually accessing the expertise itself.
The expert system will make money by charging a percentage of the payment from the consumer to the provider.
Various models for providers to sell expertise will be made available: large one-off payments for unlimited access to a provider's expertise, rental (monthly or annual) access and even cheap one-off "shots". The providers set the pricing for their expertise and the open-market and customer feedback does the rest.
Providers will administer their account through an easy-to-use web-site that also provides information concerning the usage of their expertise. This is so they can view (for example) usage trends, popular areas of expertise, basic customer profiling and feedback on their offerings enabling them to concentrate on the most valuable areas of the market.
Consumers will be able to access expertise in various ways to reflect their individual requirements. This includes both forward chaining (data driven) and backward chaining (goal driven) interrogation strategies.
Consumers will also be able to interact with the system in one of two ways:
I have already spent a lot of time designing the expert-system "engine" – the piece of software at the heart of the system. There is still a lot to do in order to make it more efficient and flexible and I still need to make extensive tests.
I have yet to start on both the web-services API and the web-site but I hope to get initial mock-ups for the user interface and specifications for the web-services completed in the not-too-distant future. This will, of course, involve discussions with potential end users (encompassing providers, consumers and potential third party software developers).
Finally, as with all my other projects described on this site, I need to spend some time writing a business and marketing plan.

subset: commoncrawl


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(Error 2) Coverage Unit hardware failure.
Coverage Unit hardware error that may be remedied by a reset. Your Coverage Unit may not display a flashing error code. You will likely only see the solid red power indicator on your Coverage Unit.
Try this….Reset your Coverage Unit. Simply unplug your Coverage Unit for a few seconds and plug back in.
If after restarting your Cel-Fi RS2 your hardware issue remains you will need a warranty replacement from your point of sale. If you received your Cel-Fi RS2 from your cellular provider, reach out to them for support. If you purchased your Cel-Fi RS2 from Cel-Fi.com please select the link below.


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Still unsure if you are eligible to enter? This should help clear things up for you.
To find out more about this exciting news please visit our new website.
All computer graphics students worldwide that attended an accredited course between January 2014 - May 2015 are eligible to enter.
Examples of suitable courses are Computer Animation, Bachelor of Computer Graphics, Animation and Interactive Media, Game Design and Development, 3D Computer Animation, Digital Effects, Computer Visualisation, Computer Science, Visual Effect (VFX) Courses. All other courses with similar curriculum are deemed suitable.
Our judges are looking for any of the following skills, but not limited to: Modeling, Texturing, Rigging, Pre-visualisation, Architectural Visualisation, Animation, Lighting, Compositing, Live Action, Character Animation, Editing, Concept Art, Coding, R&D, Game Design, and Game Development.
To successfully enter the 2015 CG Student Awards you must be able to show proof that you have studied, or are currently studying at a certified university, school, or online training facility between January 2014 and May 2015.
Please note that student's who attended short online courses/workshops are not eligible to enter. Only courses with certified certificates and diplomas are eligible.


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The knee jerk reaction of the not-economically-competent-enough (yes, both ways) and non-football-savvy people, like me, to the record breaking deal of Neymar this week was: WTH!
The star footballer made a move from Barcelona to the Qatari held Paris Saint-Germain football club in a deal which will fetch him $850,000 a week after tax.
Like, there has to be some quid pro quo, right? Something like 'Price is what you pay; value is what you get'. So what value we get from people highly skilled in maneuvering a ball – through a herd of men obstructing their path – successfully into a net of predefined dimensions? And is it more than the value we get from a doctor, an engineer, a scientist, a school teacher or an accountant (I know this one is a stretch, but you get the idea)?
A Neymar fan would answer that he deserves it, every cent of it, for the entertainment and thrill he provides. Just like the major players of other entertainment segments; tennis, Hollywood, Bollywood, etc. But that doesn't solve our problem; we are talking about all the Neymars – across all like industries, not just football.
Something about the thrill. This time from the economist's lens. The thrill draws fans, followers, viewers. This means more sponsors – as companies will realize that bigger audience will be following this team with this player and their products/services labels/adverts will catch more eyeballs which will convert to more sales revenue. Then of course the higher following means more stadium tickets sold, more merchandise (club tees, etc.) sold and enhanced chance to score the prize money by better performance.
So all this ball-kicking leads to more economic activity, higher sales/revenue for football clubs, more revenue for sponsoring companies, more sales of refreshments in stadiums, in turn more TV licensing fee, again sponsorships, high prize money, more paying jobs for people selling refreshments, making tees, manufacturing footballs, and you can add to the list. Wow! Neymars are apparently good for the economy.
To get an idea what numbers we are talking about, have a look at the 2017 slideshare report of Deloitte Football Money League:
I guess by now you are fascinated by the economists' narrative. The answer to our value question – Are Neymars more valuable to society than teachers, doctors, nurses, scientists, engineers? If not, then why do they get paid more? – is simple and baffling at the same time: Neymars make more money for those who pay them these huge amounts.
So price has not got much to do with value (as in value to society, the broader sense, not just money making for sponsors). We are back to the water-diamond paradox. Water is both, more valuable (as in to live) and cheaper, than diamonds.
Moral of the mess: Money may not equal value. Its easy and thrilling to forget.


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Want to get into a new sporty car for an affordable price? The Nissan Maxima is definitely the top choice for that. The base engine delivers all the power and acceleration you need in a sedan, but Maxima took it a step further and went with an engine that can put out 300-horsepower. This 3.5-liter V6 engine also has CVT giving it a smooth transition as you accelerate and handle the roads with ease.
Maxima has been known for its affordable power in the past, but this is the first time that you'll see so much horsepower in a base engine for a vehicle. Nissan has been upgrading its lineup's performance and has also done some work with the suspension, choosing to go with better handling and power over some of the other design upgrades that other carmakers are doing at the moment.
Want to give it a test drive? Stop by Gregoris Nissan.


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It was a time for spreading our wings and seeing
where this new adventure would take us.
Blogging, how did I get into this online-communication world?
Now I am writing about the Wichita Montessori School, of which I
am a part. This being my first blog ever, my mind is flooded with
topics. Which direction do I go, how long should it be, what are the
most important issues to address? As I evaluate my direction, my
mind wanders to the past months.
Over the summer my husband and I took our first cruise; each day
was filled with memorable opportunities. On the cruise ship we
experienced peacefulness, the communities exhibited grace and
courtesy to others, people handled freedom and responsibilities,
there was excitement, opportunities to explore and learn about new
areas and regions, positive energy, and of course the prepared
environment was beyond description! On an excursion we
snorkeled the Barrier Reef. Even though it was difficult swimming
for an hour, it was well worth the hard work. We pushed ourselves
to a new level, and it was very rewarding.
At another stop we swam with the dolphins, which was a time
where we felt one with nature. We were part of the underwater
world—not more important—but part of the whole. The
opportunities on the cruise were all around, some things we were
expected to do, some were left to our own choosing. It was a time
for spreading our wings and seeing where this new adventure
would take us!
The cruise was a delightful journey, and I couldn't help but think
that the characteristics I observed parallel with what I encounter at
Wichita Montessori School every day:
- communities exhibiting grace and courtesy
- freedom with responsibility
- opportunities to explore
- problem solving
- collaboration
- learning experientially about new areas, regions, and personal interactions
- prepared environment
- respect for one another
No, we don't go snorkeling, swim with dolphins, and are not
located on an extravagant ship. Nevertheless, each day is unique,
filled with opportunities where we learn and grow together.
Wichita Montessori School is truly a place where learning comes
to life; a place of discovery where children can indulge their need
to explore and learn.
Well, my first blog is completed! Yes, I have left my cruise ship
behind, but continue to love my exciting experiences and journey
at our Wichita Montessori School. Follow our blog and keep up
with our adventures.
Linda J. Amos
Head of School
Wichita Montessori School (WMS)
For over twenty-five years WMS has been a highly respected
school in the Wichita community grounded in the Montessori
philosophy and enhanced by other proven education practices of
the 21st century. As Head of WMS, a private school for preschool
age through 5th grade, I am privileged to be a part of amazing
adventures! We are located in east Wichita on The Independent
School campus. Please visit our website, www.wichitamontessori.com


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Mamorubot Polypropylene Build Plate
410 x 410 mm
No more wasting hours of your time using tape and low-quality build surfaces.
Made from a durable, rigid material with a long service life.
Consistent and reliable prints.
Strong adhesion properties firmly hold your parts to the bed while printing.
When your print is complete and the build plate has cooled, parts can be removed by hand.
Works extremely well with ABS, PLA, PETG, wood and many other types of filament.
Can be attached directly to your glass bed using clips or tape.
A heated bed is required when using this build plate.
Carefully level the print bed before printing.
1x Mamorubot 3D Printer build plate packaged in premium storage box


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Halloween is the perfect time to test out the new Hummingbird Bit from Birdbrain Tech. My plan is to create a remotely controlled ghastly ghost or scary skull, something that can be triggered at a little distance to light up and move. For $6, I picked up a hanging phantom from Target. It's not mechanical... Continue Reading →
Walk, Don't Walk!
A few weeks back I received an old pedestrian sign, the kind that shows an image of a person walking in white LEDs or a large hand held up to indicate "Stop!" in red LEDs. My cousin had recently purchased a batch of these at an auction for dirt cheap and thought that I might... Continue Reading →


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- North America
- Canada
- Saskatchewan
- Osage Wildlife Refuge
- Search
Traveling Luck for Osage Wildlife Refuge Saskatchewan, Canada
The timezone in Osage Wildlife Refuge is America/Cambridge_Bay
Morning Sunrise at 04:41 and Evening Sunset at 19:03. It's Dark
Rough GPS position Latitude. 49.9333°, Longitude. -103.5511°
Morning Sunrise at 04:41 and Evening Sunset at 19:03. It's Dark
Rough GPS position Latitude. 49.9333°, Longitude. -103.5511°
Weather near Osage Wildlife Refuge Last report from Regina University, 43.1km awayTemperature: 1°C / 34°F
Wind: 15km/h West
Satellite map of Osage Wildlife Refuge and it's surroudings...
Geographic features & Photographs around Osage Wildlife Refuge in Saskatchewan, Canada
area a tract of land without homogeneous character or boundaries.
populated place a city, town, village, or other agglomeration of buildings where people live and work.
populated locality an area similar to a locality but with a small group of dwellings or other buildings.
- Worcester (21.8km)
- Huronville (22.7km)
- Mutrie (23.1km)
- Griffin (34.7km)
- North Weyburn (38.1km)
- Wyley (39km)
- Candiac (42.9km)
- Moffat (51.2km)
administrative division an administrative division of a country, undifferentiated as to administrative level.
- Fillmore No. 96 (11km)
- Wellington No. 97 (23km)
- Montmartre No. 126 (31.1km)
- Griffin No. 66 (35.1km)
- Weyburn No. 67 (37.1km)
Accommodation around Osage Wildlife Refuge
RAMADA WEYBURN 1420 Sims Ave, Weyburn
TRAVELODGE WEYBURN SK 53 Government Rd S, Weyburn
MICROTEL INN SUITES BY WYNDH 88 Grace Street, Weyburn
lake a large inland body of standing water.
- Gooseberry Lake (28.4km)
- Moose Mountain Lake (37.8km)
- Chick Lake (39.3km)
- Rock Lake (42.6km)
- Nickle Lake (46.5km)
reserve a tract of public land reserved for future use or restricted as to use.
- Osage Wildlife Refuge (0km)
- Kendal Game Preserve (35.5km)
- Kemoca Regional Park (36.3km)
- Nickle Lake Regional Park (46.8km)
reservation a tract of land set aside for aboriginal, tribal, or native populations.
- Ocean Man 69A (32.4km)
- Ocean Man 69B (33km)
- Ocean Man 69C (39.6km)
- Ocean Man 69 (41.7km)
stream a body of running water moving to a lower level in a channel on land.
- Colfax Creek (40.6km)
- Wolf Creek (42.3km)
- Rinfret Brook (44.6km)
lakes large inland bodies of standing water.
- Chapleau Lakes (36.4km)
hill a rounded elevation of limited extent rising above the surrounding land with local relief of less than 300m.
- Lost Horse Hill (40.9km)
meteorological station a station at which weather elements are recorded.
Wikipedia entries close to Osage Wildlife Refuge
- Fillmore Airport airport airport
- Weyburn Airport airport airport
- Weyburn, Saskatchewan city o city
- Lewvan (Farr Strip) Airport airport airport
- Yellow Grass, Saskatchewan city o
- Estevan/Bryant Airport airport airport
- Indian Head, Saskatchewan city o city
- Kipling Airport airport airport
- Grenfell, Saskatchewan city o city
- Radville Airport airport airport
- White City (Radomsky) Airport airport airport
- Arcola Airport airport airport
- Arcola, Saskatchewan city o city
- Lampman Airport airport airport
- Pilot Butte Airport airport airport
- Pangman Airport airport airport
Airports close to Osage Wildlife RefugeEstevan(YEN), Estevan, Canada (102.6km)
Moose jaw(YMJ), Moose jaw, Canada (168.9km)
Yorkton muni(YQV), Yorkton, Canada (187.2km)


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Flower Child
The Flower Child Body Bar is delicately colored, scented with Bergamot and Jasmine essential oil, and will leave your skin feeling soft, clean, and moisturized. Flower child is a long lasting, beautifully crafted soap with superior cleaning ability that looks pretty and smells amazing too!
This luxurious vegan body bar is hand made with the best fresh Ingredients: Coconut Oil, Canola Oil, Distilled Water, Sodium Hydroxide*, Sweet Almond Oil, Castor Oil, Shea Butter, Vitamin E Oil, Dead Sea Salt, Sugar, Citric Acid, Kaolin Clay, Matte Oxide Pigment Powders, Bergamot and Jasmine Essential Oils.
*Saponifies oils into soap and glycerin
Every batch is hand crafted, unique, and may vary slightly.
Follow us at: www.m.facebook.com/bearysudsysoap
Vegan~Cruelty free–Sulfate and Paraben Free


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|Woo, what's that?
13 January 2011
Walking, sniffing, tugging, jumping - all in one
6 comments:
I would like to invite you to accept the 'Stylish Blog' award, details can be found at www.sewdoggystyle.blogspot.comReplyDelete
Erika and Sebastian
ooh...Congratulations on the award! Well-deserved!ReplyDelete
Pawprints are an inevitable part of the dog-love equation ;)That's how you can tell if someone truly loves your dog, they don't mind walking away with a bit of him on them!
Funny, I never mind pawprints, either. It's one of the reasons I always wear Levis :)ReplyDelete
Cute story! It is funny how some people and dogs will react with another dog. Some of our dogs are very people friendly while the others aren't very interested in them. I think it's great how friendly Aschiuta. There's nothing better than a friendly pawprint in our book!ReplyDelete
Nice posting.ReplyDelete
Saw your puppy pic on Pet Blogs United and thought I'd come over and say 'Hi'.
Looking forward to following you.
Love and licks, Winnie the greyhound x
We always wonder why Gus singles out certain people to sniff and be interested in...ReplyDelete
We love friendly pawprints!


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"POLAR DUKE" 1999-2000 EXPEDITION- part two.
The "Polar Duke" spent over three months continuously in the Antarctic engaged in various scientific disciplines. The expedition was called the 1999-2000 GANOVEX Expedition.
The sticker at right shows the official logo of one part of the Expedition and was issued by the Scientific party involved.
It emphasises that the expedition was a joint German/Italian one focused on Aeromagnetic Research in the Antarctic largely conducted by the four helicopters on board including using scientific equipment slung below the helicopters as shown at right.
The following large image was specially designed by Dieter Möller one of the participants. It shows a montage of photos of all the people participating in the expedition. It includes all the ship crew, the scientific parties and the helicopter crews.
The following photos were taken during the expedition and kindly provided by Captain Karl Sanden for use on this page.
This attractive view at left shows the "Polar Duke" set fast in the ice with her gangway down onto the ice.
The photo at right shows "Polar Duke" with her bows fast against the Mertz Glacier.
If you look closely you can see a ladder on the ice from the "Polar Dukes'" foredeck.
A new science worked by the "Polar Duke" and its helicopters is called Radio Echo Sounding. this is used to measure the thickness of the ice and map the features of the land underneath the ice. The radio waves can penetrate to a thickness of 4,000 meters. A frame in the shape of the roof on a house suspended under the helicopter as shown at right is flown on a pre-plotted track and the whole frame acts as a giant aerial. It is suspended 10 meters under the helicopter and flown at 50 knots at a altitude of 100 meters.
It takes a lot of concentration to keep it at the right speed and altitude. The scientists determined that the Matusevich Glacier, which is 65 miles long including a 12 mile ice tongue, is 150 meters thick over the water and 2000 thick at the base. It is advancing to the north-north-west at the rate of 2 meters per day and rises and falls 1.5 meters with the tide.
This photo taken in February 2000 from one of the helicopters shows the large break in the Mertz glacier where the tongue broke off and thus creating a very large iceberg estimated to be 30 miles by 20 miles in size.
This photo at left shows Mawson's Refuge Hut which was visited by a helicopter party from the "Polar Duke".
The following photos show the return of the Polar Duke to Lyttelton on Sunday 5th March 2000
"Polar Duke" arriving in the outer harbour at 8.30am
"Polar Duke" passing the outer mole
Passing Diamond Harbour in its own bit of sunshine.
Turning to enter the inner harbour
Tied up at 2 West berth in the inner harbour
The Gangway being lowered from "Polar Duke"
Four Helicopter pilots talk to wives, family and friends
Helicopter being prepared for fly off
|first of the helicopters flying off the flight deck.
Lift off from flight deck.
Other helicopters still in the hold of "Polar Duke"
Another view of the helicopters
Stores and equipment being prepared for off-loading
John Hargreaves, first mate on the voyage.
Captain Karl Sanden in his private office.
Captain Carl Sanden autographing special envelopes
The "Polar Duke" was scheduled to stay in Lyttelton for under a week before heading back to the Antarctic for another joint German/Italian Expedition called NOVOGIMEX. Scheduled departure date is 11th March 2000 and estimated return date is between the 14th and 15th of April. Nearly all the existing crew and members of the scientific parties will be changed over, with only John Hargreaves the first mate who will act as the first officer and the geophysicist scientist Dr Volkmar Damm who will join the new science team are staying for the next expedition. Captain Karl Sanden will be replaced by another skilled Polar veteran in Arne Sanvick.
We would like to express our thanks to the members of the Ganovex 1999-2000 Expedition and the Captain and crew of the "Polar Duke" for assisting us with the preparation of these web pages with special thanks to Captain Karl Sanden, First Mate John Hargreaves, Helicopters New Zealand Pilot Michael Hayton, scientist Dr.Norbert W.Rowland and Geophysicist Dr. Volkmar Damm.
Go to read report of "Polar Duke's" next Antarctic expedition
Back to first page of "Polar Duke" story
View "Polar Duke" covers and postcards available for purchase
Back to front page of recent Antarctic Covers
Return to front page of Antarctic Philately
Return to "Recent Antarctic News"
go to front page of Shades Stamp Shop Ltd


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Field Surveys
Risk Assessment
Companies and organisations are increasingly becoming aware of the effects of lightning and other phenomena which cause overvoltage surges and the risk posed to buildings, equipment and their personnel. The effects do not have to be violent as expected from a direct strike. A lightning strike some miles away will induce surge voltages in electronic equipment and damage it or corrupt the data contained in it. In some cases personnel using the equipment may get an electric shock making them uncomfortable in their job.
Companies very often take some measures to provide protection but this usually takes the form of some 'off the shelf' device which is not up to the expected threat and in any case degrades with time.
To ensure that an organisation is aware of the risk posed to their particular situation Surgetech is able to carry out risk assessment surveys to the British Standards Institute Code of Practice regarding complete sites, buildings, equipment and personnel. Surgetech has worked to both the existing BS 6651 Standard and the new BS EN 62305 Lightning Protection Standard.
A comprehensive report is issued detailing the level of risks and where they are. The company is then aware of the situation and can make its own judgement as to what it should do – it can obtain independent quotation to carry out any work required – it can obtain further information from Surgetech regarding the costs of providing protection if any is required – or it can do nothing.
Soil Resistivity Measurement
New buildings and existing structures such as electricity sub-stations need to be well earthed and it is important therefore to know something of the soil resistivity and how it varies with depth over the site. This allows earth rods to be placed to minimise the impedance of the earthing sytem.
Surgetech normally use the Wenner (or "four electrode") method to obtain resistivity values at different depths.


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Kimberly Dunnam Reisman
Kimberly Dunnam Reisman, is widely known for her effective and engaging preaching and teaching. She is an author, pastor, teacher, and theologian, focusing her work in the areas evangelism, spiritual formation, leadership development, and the intersection between faith and culture. Currently she is the Executive Director of World Methodist Evangelism, she serves on the World Methodist Council Steering Committee and regularly partners with World Methodist Evangelism and the World Methodist Evangelism Institute, providing leadership for their evangelism seminars worldwide.
Kim received a Bachelor's Degree from Emory University, a Masters of Divinity from Yale Divinity School, and a PhD in theology from Durham University in the United Kingdom. Kim is a senior Harry Denman Fellow, a senior John Wesley Fellow, an Adjunct Professor at United Theological Seminary in Dayton, Ohio, Seattle Pacific University in Seattle, Washington, and Asbury Theological Seminary in Wilmore, Kentucky, and a Visiting Fellow at St. John's College, Durham University in the UK.
Kim is the author or co-author of numerous books and studies, including The Christ-Centered Woman: Finding Balance in a World of Extremes and Knowing God in the Sisters Bible study series. The mother of three adult children, Kim and her husband live in West Lafayette, Indiana.
Studies & Books
Click through the individual product pages below to access detailed information about each offering. You will also encounter free sample videos and chapters, leader helps, and shareable images for your review and use.
The Christ-Centered Woman - Women's Bible Study
What People Are Saying
Six weeks ago, twenty new female friends and I began Kimberly Dunnam Reisman's study, The Christ-Centered Woman. As I entered our classroom after our first week of this study of Ephesians 3, one of my new friends remarked, "Does she (the author) know me? I can't believe how much I needed this study!"
The Christ-Centered Woman provides not only sound theological teaching for a women's study group, but also draws group members closer to one another. The grace and balance emphasized in this well-formatted study created an atmosphere of peace and acceptance fostering the vulnerability and openness vital to an engaged, supportive and enthusiastic group of women.
Each week's video and lessons work well together making this an effective, yet easy study to facilitate. Best of all, seasoned Christians, new believers and those investigating Christianity responded enthusiastically to the study.
As author Kimberly Dunnam Reisman, who serves as executive director of Next Stop Evangelism Ministries and adjunct professor at United Theological Seminary, emphasizes in an introduction, "Over the years, I've learned that balance is not about eliminating chaos; it's about finding a calm center from which to navigate the commitments and challenges of life. And this calm center is found in Jesus Christ."
Together my new friends and I learned that, while we may not be perfect, through the Holy Spirit's guidance and with each other's encouragement, we can become more balanced and Christ-centered.


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Monday, October 31, 2011
Charlotte's Hootin' 1st Birthday Bash
Friday was my daughter's 1st birthday. I can't believe how fast she has grown! It feels like just yesterday we were in the hospital waiting for her to come into this world.We had the grand celebration of her birthday on Saturday, complete with plenty of friends and family. It was so much fun! The theme of her birthday party was Owls. We chose the theme because we've always thought she looked like a little baby owl because of her big wide curious eyes.
This was pretty much the basic set up of the main table. There were matching streamers, balloons, and a Happy Birthday banner strewn across from the kitchen and dining room to the living room. A friend of mine made Charlotte's smash cake which is the big owl in the middle. I made the owl cupcakes. I also made the little favor bags. Inside of them is candy, an owl finger puppet, and bubbles. On the outside of the bags - I added an owl coloring sheet along with a set of four assorted crayons.
The best part definitely had to be singing happy birthday to Charlotte and letting her smash the cake. She was covered in icing! She really dug into that cake. In fact - she even grabbed the icing before we could blow the candle out. I think the smash cake was her favorite par too.
She loved opening the gifts. She got some really cute things like a cabbage patch doll that was named Charlotte and born in October (just like her!), a few owl stuffed animals, an elephant that uses air to blow little balls out of his nose, and so much more. The gift we got her is in the picture above. It's a little alphabet train. It comes with a ton of alphabet blocks and she loves it! It teaches colors, 1 2 3's, and A B C's. The little caboose in back is made to be sat on so she has the option to ride it. The caboose can come off and she can hold onto the bar and push it (it can help her learn how to walk). It seems to be her favorite toy out of the batch.
The party was a great success and we really enjoyed ourselves. I think Charlotte enjoyed it too and we got a ton of pictures to capture the memories. As much fun as it was though - I'd be lying if I didn't tell you that I am glad it's all over with. I never realized how stressful planning a party could be! It was well worth it though to see my little owl have a huge smile on her face.
And now of course it's Halloween. Happy Halloween to everyone! We're going to do a little trick or treating and then come back home to pass out candy. I'll be sure to share the costume cuteness with everyone! I hope you all have a safe and fun Halloween.
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With an annual paid membership of $35, Mustang Nation members will receive ticket and merchandise discounts, a member bumper sticker and an official membership card to be used to redeem benefits. Membership dues paid to the Mustang Heritage Foundation are 100% tax deductible and can be considered a charitable contribution on your individual tax return. Dues and contributions received through the Mustang Nation will be applied to continuation of MHF programs and events.
More information coming soon!
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Work with QuickBooks Using Zen Cart QuickBooks Integration Addon
To enhance overall profitability internet vendors have to pursue strategies that reduce cost, minimize time and amplify efficiency. Data synchronization with QuickBooks greatly contributes to developing sustainable store management scheme and helps store owners stay organized.
QuickBooks is a business accounting software program that accomplishes many tasks related to recordkeeping and data compilation. Zen Cart QuickBooks integration helps you track and organize information about orders, products and customers.
Store Manager for Zen Cart and its QuickBooks Integration addon ensure fast and accurate data synchronization with QuickBooks accounting system. With the help of these solutions you can swiftly transfer data between Zen Cart and QuickBooks. It's possible to carry out the following operations:
- Zen Cart export of products
- Export of customer data from Zen Cart to QuickBooks
- Order export to QuickBooks
- Product import from QuickBooks
The operations mentioned are being undertaken through corresponding export/import data wizard utility. The wizard tool walks you through each and every step to spotlessly transfer product, order or customer details. It eliminates the possibility of inaccuracies occurrence, as compared to manual data entry and significantly accelerates data appending processes.
Below you can find short overview of each operation:Zen Cart export of products to QuickBooks
At the start, decide on what exactly products should be appended to QuickBooks accounting system. It's possible to opt for certain items or transfer all Zen Cart products. You can also designate products to be exported using filter options, once the wizard tool is launched. On succeeding stage of data export you have to connect to QuickBooks.
To set product export you are to define export options. Specify appropriate export method, according to operation you need to fulfil: renew Zen Cart products, add new items or both. Define what type of products will be appended to QuickBooks - inventory part, non-inventory part, service, other charge. In case "quantity" field must be exported to accounting software, choose "inventory part" option.
When working with QuickBooks, use dot sign as decimal, otherwise the addon will notify an error and data transfer won't be completed successfully.Zen Cart export of Orders
Order export process runs similarly to Zen Cart products export. It should be pointed out that orders can't be renewed only created. Zen Cart order won't be created without customer. It's obligatory to check "Create customer if doesn't exist" box on Export Options step if there is no customer. On condition that no customer exists and this option is disabled, order won't be added to QuickBooks.Customer export to QuickBooks
When appending data to QuickBooks via Zen Cart QuickBooks Integration addon you are able to only create, only alter customer information or accomplish both operations simultaneously. Don't forget to specify customer identifier. Depending on method specified, the addon will look for customers.Import Zen Cart products to Store Manager
It's also possible to update Zen Cart products, performing data import from QuickBooks to Zen Cart. Appending products to Store Manager you have to define import method (create and modify, create only or modify only), kind of products you import and fields, that should be updated. At times when adding new products, you may need to create new category for them. Specify category name in corresponding field and it will be automatically created in the process of data import.
Zen Cart QuickBooks Integration addon makes it easy to synchronize your products, orders and customers between QuickBooks and your Zen Cart store. You can download the addon here - http://www.zencart-manager.com/quickbooks-integration


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Our customer service, honesty and quality of workmanship has earned us that reputation in the Northern PA, Southern NY and Tampa FL marketplace. We pride ourselves on staying up to date on current NFPA standards in Fire Protection & Sprinkler Systems as well as knowledge in the latest product innovations to provide our loyal customers with superior quality work at the most competitive prices possible.
Beach lake Sprinkler is one of the most highly regarded fire protection contractors offering fire protection systems in Northern Pennsylvania, the Southern Tier of New York and Central Florida area. Our commitment to quality workmanship and client relationships has set it apart from the competition and our success is best explained by our ability to provide the highest quality services and to add value to our clients' operations. The reputation of our company is well regarded and recognized by architects, engineers, insurance companies and contractors throughout our operating areas. At Beach Lake Sprinkler we strive to stay on top of industry changes and new product innovations to provide our customers with quality work that complies with state and local codes and insurance company requirements at reasonable prices.
Beach Lake Sprinkler's offices are located in Honesdale, PA and Brooksville, FL. Although we are licensed to work in Pennsylvania, New York, New Jersey, Delaware, Maryland, North Carolina, South Carolina, Georgia and Florida, we mainly service Northern PA, Southern NY and Tampa FL.
Beach Lake Sprinkler was founded in 1992 by Scott Treverton. In 2002, Michael Treanor joined Scott Treverton as co-owner and operated the company until the sale to Davis-Ulmer Sprinkler Company, Inc. in 2015.


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The Indian Government has planned to spend nearly 8 trillion in the mega initiative "SAGARMALA". This project is divided into four parts i.e. Port Modernization, Connectivity Enhancement, Port-linked Industrialization and Coastal Community Development.
Port modernization is the process where it the ports modifications will be done over the period of 20 years.
Click here for our earlier report defining the need, history and mechanism of the Sagarmala Project.
This report is a short follow-up report on the project, which talks about the time-based outlay and future aspects of the four parts of Sagarmala.
The main focus of the Port Modernization Module is to develop the capacity of the ports so that the ports can be more efficient. Those ports which have been underutilized over the years can be re-developed to meet the demand of the cargo transport in India.
The deadline for these projects is FY 2035 which is set by the Government. All these developments modernization and new port developments will result in the increase in operational efficiency the current and upcoming ports.
Government projects such as Inland Container Depots, Jal Marg Vikas Project, Dedicated Freight Corridors (DFCs), Bharatmala initiative and the plan for pipeline expansion will provide an impetus to the development of multi-modal transport hubs, helping reduce the cost of freight transportation.
The total projects under this scheme is 170 of which 62 are already finished and remaining will be done over a period of 20 years i.e. till FY 2036.
Coastal Economic Zones (CEZs) have been proposed as economic regions hosting industrial clusters. With the establishment of CEZs the Government aims to reduce time and cost for the imports and exports to reach marketplaces. It also creates employment opportunities for 10 million people respectively.
The government allocated USD 648 Million in order to develop the coastal community in India. The coastal development includes skill development, cold chain development, fisheries, aqua culture, local tourism and recreational facilities.
With the increase in the cost of maintaining roads and other forms of transportation, government is focusing on developing waterways in order to reap the benefit of the cheap source of transportation, unlike roadways and airways where the cost is higher.
The government has planned to develop 5 national waterways over the period of 20 years. As of the current year only works related to NW1 has been started and for remaining it has not yet started and it will be operational over a period of time.
There are certain types of risks aligned with this project i.e. political instability in the country, natural disasters like tsunami and it may impact the fisheries as it affects the fishes in the different canals and rivers as well. Ultimately we can conclude that there is a huge scope for waterways in future.
We will continually update this space with more statistics as and when we get them.
-Report By Mr.Sai Pradeep under the guidance of Mr. Janak Shah


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Right at Home Central Texas is looking for compassionate individuals to work as live in caregivers with local (Waco) clients. You are asked to live with a client for 24 hours a day 2 to 5 days a week to provide care. During that time you will have a bedroom, and meals will be provided. You are providing home care and companionship services to an individual or individuals in a household. Individuals with verifiable nurse's aide (CNA) experience and retired nurses are also able to provide personal assistance care.
Right at Home pays a live in wage that is higher than most home care companies in Central Texas because we place only the most reliable and professional caregivers in this type of care situation. Live in caregivers must pass a rigorous background check and work skills evaluation. Previous experience is preferred but not required. Live in caregivers must be energetic, positive, and able to handle light housekeeping, laundry, meal preparation, and safety supervision.
Join a team that wants to provide the Right Care with the Right People, Right Services, Right Approach, and Right Mission.


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Any Football Fans here in the Forum?
Well, I thought that we could make a topic like this to talk about Football. For example about the different Leagues, the World Championship, the Europe Championship and so on...
What are your thoughts about the final of the Champions League? I hoped that Dortmund would win, though I'm not a Fan of Bayern Why? Because a Fan of the 1. FC Nürnberg NEVER likes Bayern München D
Football Talk
Here you can post everything which doesn't fit into the other forums!
Here you can post everything which doesn't fit into the other forums!
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Re: Football Talk
Usually I watch football only when Bulgaria's National Team is playing. Hopefully nowadays they're not so bad like they were before some years.
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Samsung mobile phones problem, especially in hardware area, usually difficult enough to be solved. But now, here mobile repair guide try to share some solution for Samsung cell phone problem. In this post, we share the solution picture for Samsung S5360, please save the picture as your reference.
Friday, 3 August 2012
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The mission of the Davis Direction Foundation is to serve as a role model in our community in order to become a national resource for Opiate/Heroin Addiction Awareness and Change.
We will strive to remove the outdated stigma of opiate addicts and innovatively revamp the rehabilitation process to appropriately address the disease of Opiate/Heroin Addiction as one of the most severe forms of addiction. We will provide direct assistance and services to individuals, family members, or others at risk of experiencing an opioid related overdose including but not limited to providing opioid antagonists.
We believe that collectively we can make a difference. We Believe that the optimal answer to opiate/heroin addiction is prevention. We believe that heroin causes one of the most severe forms of addiction. We believe that we must make heroin a public conversation in order to make a difference. We believe that the stigma of a heroin addict and rehabilitation for them is outdated and needs to be changed. We believe that legislative changes need to be made regarding Opiate/Heroin addiction. We believe that addiction of all kinds is a disease.
Our Challenge
According to the National Survey on Drug Use and Health (NSDUH), in 2012 about 669,000 Americans reported using heroin in the past year,1 a number that has been on the rise since 2007. This trend appears to be driven largely by young adults aged 18–25 among whom there have been the greatest increases. The number of people using heroin for the first time is unacceptably high, with 156,000 people starting heroin use in 2012, nearly double the number of people in 2006 (90,000). In contrast, heroin use has been declining among teens aged 12–17. Past-year heroin use among the Nation's 8th-, 10th-, and 12th-graders is at its lowest levels in the history of the Monitoring the Future survey, at less than 1 percent of those surveyed in all 3 grades from 2005 to 2013.
Why Your Donation Makes A Difference
When you support the Davis Direction Foundation, you're supporting an organization whose impact has already extended far beyond a local community. We reache across demographic, geographic, and political boundaries, to affect real change. We're an apolitical organization by design. For us, it's not about addiction it's about recovery.


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Advantage Metals Recycling Kicks Off Our 105 Pounds of Cash Giveaway [PHOTOS]
By now I'm sure you've heard all about our huge 105 Pounds of Cash Giveaway. It's pretty exciting, and we'll have plenty of other chances for you to head out and make a guess. The first day of our giveaway out at Advantage Metals Recycling was a big success!
So many great people were there to talk to us and make a guess. We ate some great grub and learned all about how Advantage Metals Recycling works. There were some very prominent political visitors, some great kids and lots of just great vendors. The Sedalia Fire Department and the Pettis County Sheriff's office was there too, lots of great folks. Here's a look at how it went down!
Make sure you stay tuned in for when we'll have our next live broadcast so you can make your guess and hopefully win all that cash!
Recycling-ly yours,


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Where in the world can you stream In This Corner Of The World? How soon is this award-winning anime film coming to the corner of Netflix?
Here's why you don't want to pass this one up: The central character of This Corner Of The World is Suzu Urano, who lives in 1940's Japan and moves with her husband to the town of Kure located in Hiroshima. The first two-thirds are about Suzu overcoming small personal issues and are rather light in tone, and then (SPOILERS if you never went to school) an atomic bomb is dropped on the city. The last third becomes about just surviving, as Suzu and her new friends rely on the bond they have formed.
In This Corner Of The World had a limited theatrical screening last year arranged jointly by Shout Factory and Funimation. Netflix picked up the streaming rights in both America and Japan, as well as Canada and several other territories.
You can take this trip back to the past beginning March 15. Here's Netflix's official trailer…
The thread view count is
The award-winning story of IN THIS CORNER OF THE WORLD follows a young lady named Suzu Urano, who in 1944 moves to the small town of Kure in Hiroshima to live with her husband's family. Suzu's life is thrown into chaos when her town is bombed during World War II. Her perseverance and courage underpin this heart-warming and inspirational tale of the everyday challenges faced by the Japanese in the midst of a violent, war-torn country. This beautiful yet poignant tale shows that even in the face of adversity and loss, people can come together and rebuild their lives.


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The American intelligence reports' recent assertion that Iran halted its nuclear weapons program in 2003 does not change anything about the current situation as long as it does not fundamentally change the minds of American policymakers. Judging from President Bush's dismissive response, this doesn't seem to be the case. The truth is, Americans do not need a pretext to continue their bullying of Iran, which is precisely why Iranians want to and in fact should build nuclear capacity.
Etiketter: Iran-krisen


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Formatting your source code can be a daunting task even modern IDE's cannot always auto format your code correctly. One special case here is breaking long lines in python. Python is a special case here because indention matters. Using the following macro it is quite easy to format long lines easily.
Category: Linux
Check for memory over allocation (KVM)
Virtualization brought all the benefits of over allocation (using more resources than physically available) to us. And sharing resources like CPU makes a lot of sense if you for example have a daily distributed workload like daily traffic and nightly jobs to generate reports and don't need all resources at a time. This works great most of the time and is acceptable to slow down your system because of lack of resources sometimes but you definitely don't want to crash you system because of lack of resources. This is why you usually don't want over allocate memory. The following script allows you to check this for KVM hypervisor hosts.
Migrating ownCloud from MySQL to PostgreSQL
This article describes how you can migrate you ownCloud installation from MySQL DB to PostgreSQL. My setup is as follows
- ownCloud 9.1.1
- MySQL 5.6
- PostgreSQL 9.6
- Ubuntu 14.04 LTS
Migrating is quite easy thanks to ownCloud builtin db:convert-type command and takes no longer than 30 minutes.


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Until a few years ago, I had no idea what Polishing the Pulpit was. Even then, when I first heard of it, I thought it was "just a preacher's seminar." Now I know better…and I am so thankful. Our family spent the past week in Sevierville, TN, in the incredibly beautiful Great Smoky Mountains, attending an event that was definitely not just for preachers.
The printed program dubs PTP "a life-changing event to refresh the spirits" of all Christians…"a spiritual boost"…and that's exactly what it was. While there, the same word kept popping into my head over and over: WOW!
122 speakers from 13 states
476 different classes in multiple tracks
2351 people in attendance
Not only were there class tracks for preachers, youth ministers, elders, and deacons; there were also tracks for teens, women, children, homeschoolers, Bible class teachers, members, widows, and Spanish speakers. Other tracks included marriage and family, small churches, evidences, missions, and technology.
Workshops were taught by doctors, lawyers, preachers, elders, professors, authors, politicians, and even a former atheist.
There were multiple singing sessions, lots of fellowship activities for the teenagers, and on-site shopping for all kinds of great resources. Opportunities were provided for marriage & family counseling and for job hunting, and there was a Song Leading School (for all ages) and a Future Preachers Training Class (for boys/young men).
I am so thankful we had the opportunity to be a part of this incredible event. I'm thankful for what we learned. I'm thankful for the fellow Christians we met for the first time and for the ones we got to spend time with once again. I'm thankful that our family was able to focus on growing in Christ all together, all week long.
WOW! If you are ever able to be a part of this event, I would HIGHLY recommend it. I know our family will never, ever forget it.
Come back tomorrow and I'll be sharing some of the highlights of the week. Until then…
Check out these other PTP-related posts:
Our Great Smoky Mountains Adventure