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Home dialysis giving patients their lives back
|Chuck Letner, 49, who suffers from renal dysplasia, looks at the display screen as he undergoes treatment at his home in Alpharetta, Georgia, on October 10, 2012. Letner has received treatments at home for the past 17 years after having received the first of three kidney transplants at 13. (Jason Getz/Atlanta Journal-Constitution/MCT)
Letner, who has undergone three failed transplants, has no kidneys and has lived nearly half of his life on dialysis.
But instead of having to go into a clinic three times a week for three to four hours each session, Letner, 49, cleans his blood while sitting in his easy chair at home in Alpharetta, Ga.
"The level of independence it provides is very empowering," Letner said recently. "It changed my life."
Although home dialysis has been available at least since the 1970s, its use has yet to become widespread, said Charlotte Frasier, a registered nurse and home therapy manager for Fresenius Dialysis Center in Marietta, Ga.
In fact, according to Home Dialysis Central, an online resource developed by the Medical Education Institute to raise awareness about in-home dialysis, more than 400,000 Americans need dialysis, but just more than 1 percent of them use home hemodialysis. In Georgia, there were 16,646 dialysis patients last year, and of those, 1.6 percent were using home hemodialysis.
Dialysis can be physically draining and requires a significant time commitment, so many patients are unable to work and find taking extended overnight trips can be difficult because dialysis requires scheduling.
With in-home dialysis, though, patients can do dialysis whenever it is convenient to them. It's important, Frasier said, that patients talk to their physician to determine whether they are mentally and physically able before they proceed.
"Home is fantastic," said Dr. Stephen Pastan, a nephrologist and medical director of Emory's kidney transplant program. "Patients love it." Frasier said the option, which is covered by most health care insurance and Medicare, has been slow to catch on because of "a lack of knowledge." Plus, Pastan said, a lot of people find sticking themselves with needles frightening and are reluctant to do the self-care even though home dialysis is easy to do.
"A lot of people get renal disease, start doing in-center dialysis, and no one ever tells them they can do it in the comfort of their own homes," she said.
Unlike dialysis care, where patients must go to a outpatient clinic, those who elect to be treated at home must be able to stick themselves with the needles and have a spouse or other helper in case of problems.
Letner, a retired computational biochemist, is one of nearly 100 patients Frasier has trained to perform in-home hemodialysis.
Patients, she said, are required to come into the clinic at least once a month to check blood levels and manage medications and dialysis prescriptions.
"In between visits, we have a nurse on call 24 hours a day to help with any concerns," Frasier said.
According to Frasier, your entire blood supply flows through your kidneys every two minutes. In addition to removing waste and fluids from the bloodstream, the organs also produce hormones that help make red blood cells that carry oxygen to other organs, control blood pressure and build strong bones.
When kidneys fail, most likely due to hypertension, diabetes or both, dialysis performs that work, she said.
Fresenius, which has about 1,800 clinics in the U.S., recently launched what it calls the "TOPS" program to help raise awareness about the different dialysis options available to patients and the advantages to doing the procedure at home.
"Fresenius' mission statement is 'Improving the quality of life of every patient, every treatment,'" Frasier said.
"By almost all measures, patients who do home hemodialysis do better than those who don't," said Pastan, the medical director of Emory's kidney transplant program.
"They feel better, their appetites are better, their energy level is better and they live longer," he said.
Letner, who was diagnosed with renal dysplasia at age 6, first went on dialysis in 1979 soon after he rejected the second of two donor kidneys, including one given him by his father.
He was 16 and in high school then, trying desperately to maintain his quality of life. Even though he would undergo more than 50 surgeries, including one more transplant, he said he managed to live a normal life.
"I went to football games and parties with friends, and I even learned to scuba dive and ski," he said. "I had friends who'd come with me to dialysis from time to time." He dreamed of graduating from high school and college, and he did.
Letner was in graduate school studying to become a computational biochemist when, he said, he decided the dialysis clinic was too confining.
"The biggest obstacle was the scheduling," he said. "I had to be there at 5 p.m. even though I wasn't getting in until around 6:15. It made no sense to go there and wait.
"I walked into the charge nurse's office and said I have to go home now. I can't do the units anymore." That was in 1995, the year Letner began home dialysis.
"It was hands down the best decision of my life," he said.
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- Technology helps with fitness goals
- Eating in storm's wake
- Living on the kindness, and kidneys, of donors
- His daughter's mission
- Talent show spotlights those with special needs
- Integrative medicine: The politics of your brain
- Bubbling up: Diet soda market adding exotic flavors
- Home dialysis giving patients their lives back
- Fake medicine a threat to consumers
- A humble humanitarian


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Chase's Behr captures 500th career win
Ray Behr recorded his 500th career win as the Chase Collegiate girls basketball team topped Westover, 54-27, Saturday at the Goss Fieldhouse in Waterbury.
Supported by more than a dozen former Chase players in attendance, Behr earned the milestone victory in his 27th season, and has compiled a 500-126 career record.
Taylor Brady scored a game-high 21 points for Chase (7-2). Emily Grimes recorded 13 rebounds and four steals and Natalie Fitgerald added 10 points and 10 rebounds.
"It was very satisfying," said Behr. "The kids were so happy for me, and, of course, of our accomplishments and because of our team success, we were able to achieve this."
Marissa Littmann had a team-high 11 points for Westover (2-4).
Westminster 40, Canterbury 35: Abby Jones scored 15 points in a losing effort for the Saints. Shannon Lenihan-Burke added 13 points.
Boys Basketball
Chase Collegiate 81, Watkinson 25: Kyle Bonicki had 13 points with four steals to lead the Highlanders in West Hartfrod.
Matt McClain added 10 points and four steals for Chase (6-4, 3-0 Housatonic Valley Athletic League) and Blake Hardy chipped in with 10 points.
Greg Facey recorded seven rebounds and Ryan Shiel contributed four steals.
Taft 71, Hotchkiss 64: With six minutes to go in the second half and the game tied, Joey Flannery hit three consecutive three-point field goals to force a timeout and give the Rhinos a nine-point edge, which allowed them to take control of the game in Watertown.
Flannery finished with a game-high 24 points for Taft (7-2) and Kade Kager added 12 points, 10 rebounds with six assists. Shawn Strickland chipped in with 13 points.
Makai Mason had a team-high 19 points for Hotchkiss (3-3).
Newtown 10, Shepaug-Nonnewaug-Litchfield 4: Tyler Smith had three goals and an assist for Shepaug co-op and Andrew Loya added a goal.
Sam Jones had two assists and Greg Valentine and Mike Galinski had one. Anthony Graziani recorded 34 saves.
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text: Here is a very muscular character that makes my side hurt sometimes when I watch her on screen. Up next we will have fun as we learn "how to draw Starla", step by step. He is also known as the muscle woman from Regular Show. She is a green pig faced girl that has a lot of muscle and a big mouth. Since my sister is still addicted to The Regular Show, I figured that it would be fun to fill a request on drawing Starla. I will return with another tut for you all. Stay tuned in.


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I'm creating a text RPG in Java, but I think this applies for a GUI as well with regard to the data structure. Each Level is a tiled map. Each Tile object has an (X,Y) coordinate, and references to adjacent tiles, but my question is with regard to storing object and NPC data on that Tile object. Depending on the size of the map I'm loading, this seems like a lot to load, but if that is the commonly accepted practice then I'll go with it.
I'm not sure where the problem is that you're asking about. If you need the data, you have to load it. I would personally keep NPCs in a separate list, and track them separately from all the actual tile data. That's how I make these kinds of games.
Because you only need to draw the tiles on-screen; but entities (NPCs) may have collision logic, events, etc. and should always be tracked, regardless of their position.
If you're worried about performance, then I say, don't; just code it, and if problems arise, you have working code to profile and optimize.
Edit: The way that I would code it would be to have a 2D array of tiles; each tile has the XY coordinates of the image that it displays, a "walkable" attribute, etc. NPCs/entities would be kept in a separate list, and they would either hold a tile XY coordinates for the tile they're stepping on, or hold a reference to a Tile object with an X and Y.


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"The men who said they skipped breakfast tended to be younger, single, smokers, who worked full time, did not do much exercise and drank more alcohol.
The researchers also found when they adjusted the results to take out the effect of body mass index, high blood pressure, high cholesterol and diabetes, the links between skipping breakfast and higher risk for heart attack or death from coronary heart disease became much weaker: they were no longer statistically significant."
In my case the case is irrelevant since I am not overweight, have normal blood, do not have diabetes or high cholesterol, have normal blood pressure (low for my age) do not drink alcohol and exercise regularly.
Also the study says that eating late at night is a risk factor which is associated with skipping breakfast, however I do not eat late at night.


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Possible Duplicate:
Is it acceptable to begin a declarative sentence with "Am"?
Is it correct to start a sentence with did.
Did my work.
instead of
I did my work.
while answering my emails?
Is it correct to start a sentence with did.
instead of
while answering my emails?
marked as duplicate by RegDwigнt♦ Jul 4 '12 at 8:38
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
You can do this if being informal, especially in spoken English. Example:
But to be formally correct, you need to include the personal pronoun:
When answering an e-mail, I'd recommend sticking to the formal version, unless you're explicitly speaking douchebag.
Even if you get an informal e-mail from your superior, I would still recommend being at least grammatical in your reply. You don't necessarily have to be formal as if addressing the king, but you should still at least show your intelligence level by not breaking the basic grammar rules.
Did this, Done that etc are usually used in notes and informal communication.
The version of Eng. is pertinent. In Brit. Eng., the the question What have you done today? would be answered with I've done/gone/seen/.. In Am. Eng., the question is more likely to be what did you do today? the answer would be I did/went/saw...
In Am. Eng. and in many languages of the world the past simple tense is used to indicate a recent event that has an influence on the present. In Brit. Eng, we prefer the present perfect tense - after all, that is the purpose of the pres perf.
American/Nepali/Indian child weeping: I fell over! Brit child weeping: I've fallen over!
When abbreviating language, you can do anything you like if think the reader will understand. So, choose 'Did' or 'Done' as appropriate.


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Original, high-quality DLP lamps, starting for $63.99 + free shipping
Our original, high-quality DLP lamps are unmatched in price and performance. We offer three different lamp brands for each TV model: Philips, OSRAM, and OSRAM Neolux. Philips manufactures the best quality lamps among the three options, but both of OSRAM's models are excellent options. You can add housing -- the cage surrounding a lamp -- to any version of these lamps. Locate your original lamp assembly number, search for that number in our inventory, and choose the bare bulb or lamp with housing that will fix your DLP TV!
2 Comments add a comment
So where is the DEAL? Do deals.woot people get a discount? Are you having a sale?
Same question from me. The lamp for my JVC DiLA set is the same price here as elsewhere.


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I am setting up a SatGate now. Hopefully I will have it ready for the next pass in about 40 minutes. -- A.J. Farmer, AJ3U http://www.aj3u.com On 8/31/05, Roger Kolakowski <email@example.com> wrote: > QSL...it is cloudy and overcast here 20 miles north of Boston...working > conditions were 7w to a 1/4 wave whip on a metal sheet on the roof... > > There are probably not many satgates up as I didn't see my packet on Findu, > and I can see my PCR-1000 has a long way to go before it's going to hear > much at 435. > > Thanks for the report! > > Roger > WA1KAT > ----- Original Message ----- > From: "A.J. Farmer (AJ3U)" <email@example.com> > To: "Amsat-Bb" <email@example.com>; <email@example.com>; "Robert Bruninga" > <firstname.lastname@example.com> > Sent: Wednesday, August 31, 2005 8:29 PM > Subject: PCSAT2 APRS Success! > > > Copied WA1KAT via PCSAT2 on the 435.275 downlink. This was using my > TH-D7 and arrow handheld antenna. > > To top it off, it is a beautiful clear night here. ISS was visible > and bright for the majority of the pass. > > -- > A.J. Farmer, AJ3U > http://www.aj3u.com ---- Sent via email@example.com. Opinions expressed are those of the author. Not an AMSAT member? Join now to support the amateur satellite program! To unsubscribe, send "unsubscribe amsat-bb" to email@example.com
AMSAT Home


text:
How do I open the Brother ControlCenter2 in
ControlCenter2 is a software utility that allows you to quickly and easily
access your often used applications. Using the ControlCenter2 eliminates
the need to manually launch specific applications for use with your Brother
There may be two
different versions of the ControlCenter2 software available depending on your
model and operating system. If you are not sure which version you have,
try the steps for each version in turn.
If you do not have
either version, then the scanner driver and ControlCenter software is not
installed properly. For scanner installation instructions refer to: How
do I download and install the printer or scanner driver for Macintosh OS X?
Current Version
Previous Version
1. To open the
ControlCenter2 application, browse to Applications => Brother =>
The ControlCenter
will open and an icon will be placed in the Dock.
NOTE: If
you do not see the ControlCenter software, then you may be using the previous
version of ControlCenter. For instructions on how to use this version,
refer to: Previous Version.
2. If you would
like to keep the ControlCenter in the Dock for easier future access, complete
the following steps:
a. Make sure that the
ControlCenter is still open.
b. Hold down the CTRL
key on the keyboard and click on the ControlCenter icon in the Dock.
c. Choose Options => Keep in
Dock. A checkmark will be placed next to the option to signify that
the application's icon will remain in the Dock when closed. You can launch the ControlCenter from this icon in the
1. To open the
ControlCenter2 application, browse to: Macintosh HD => Library =>
Printers => Brother => Utilities => ControlCenter =>
The ControlCenter
will open and an icon will be placed at the top right of the screen near the
system time. In the future you may click on this icon and select
Open to launch the application.
NOTE: If
you do not see the ControlCenter software, then you may be using the current
version of ControlCenter. For instructions on how to use this version,
refer to: Current Version.
Seventh Annual Survey Confirms Small Business Owners Seek Success by Integrating the ...
Brother virtually solves the top print challenges facing millions of Small Office / H...
Brother Machines Sparks Creativity for new Brother Dealer


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Penalty Shootout
Game Information
VENUE: Roberto Meléndez
Use a Facebook account to add a comment, subject to Facebook's Terms of Service and Privacy Policy. Your Facebook name, photo & other personal information you make public on Facebook will appear with your comment, and may be used on ESPN's media platforms. Learn more.
Campeonato News
Marlos Moreno set to join Manchester City - Colombia Olympic coach
"Marlos is going to Manchester and Manchester will not let him play," Colombia's Olympic team coach Carlos Restrepo told a news conference.
Strangest tackle of the year seen during Colombian cup game
During the tie between Once Caldas and Deportes Tolima, one defender went thundering into a two-footed, airborne lunge on ... absolutely nobody.
James Rodriguez, Jackson Martinez suffer minor injuries
"James' knee shows trauma, but it is nothing major and he was taken off the pitch as a preventive measure," the team doctor said.
U.S. sanctions Colombian team Envigado for drug ties
The U.S. has imposed sanctions on a popular Colombian soccer team for alleged ties to a drug cartel.
Colombian team don replica shirts
Bogota mayors office suspends football match after 3 fans killed
A Colombian league match between Millonarios and Atletico Nacional of Medellin was suspended on Tuesday after three fans were killed in recent days.


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The GNOME project aims to provide the user with a desktop environment, and it does consist of many pieces of software. There indeed is a foundation called the GNOME foundation, and there is a desktop environment called GNOME, but well, can GNOME itself be called software?
"GNOME" is four things:
All of these are collections of software although each has different organisational features and aims. The third is more of an organisational "umbrella" than a discrete set of software but the first two are fairly discrete and yes, could easily be called software. Garden ornaments are rarely thought to be software.
Hearing "GNOME", one would usually infer the person was talking about the desktop environment... But just as people get angry about people not calling Linux "GNU/Linux", they might prefer you to use the longhand.
It would be unusual to refer to the 'GNOME software', but as you say, GNOME consists of many pieces of software, so it wouldn't be wrong to say GNOME is software.
Of course the GNOME Project and the GNOME Foundation are orgnanisations that you wouldn't describe as software.
A similar example: KDE was recently renamed to the KDE Software Compilation.
IMHO, for me if it


text:
Grading Policy
Grades are released only to students in good financial standing with UIS. They are assigned according to the following scale.
A: Excellent
B: Good
C: Fair
D: Marginal, but passing
F: Unsatisfactory or unofficial withdrawal. Courses in which F grades are earned count in determining grade-point average but do not apply toward graduation.
CR: Credit, represents a grade of C or better for undergraduates or B or better for graduate students.
NC: No Credit, assigned to undergraduate students who earn grades below C or graduate students who earn grades below B under the credit/no credit option.
W: Authorized Withdrawal, appears on the transcript for the course(s) from which the student officially withdraws.
I: Incomplete, after a period not to exceed one year, the provisional grade becomes permanent unless a grade change was submitted. Re-registration is not necessary, unless required by the course instructor.
DFR: Deferred, used only for courses of a continuing nature, such as graduate research. Continues to appear until the course work has been completed and a grade assigned. Re-registration is not necessary, except for graduate closure courses. Courses for which a DFR grade may be awarded will be designated in advance.
AU: Audit, no grade or credit earned. The deadlines for changing enrollment from credit to audit are posted each term. Students who enroll as full-time must include any course they wish to audit as part of the maximum permitted load. For auditing students who do not attend class regularly, the course may not appear on the transcript. Credit for an audited course cannot be established under any circumstances. If enrollment in a course is limited, for-credit students are admitted before audits are allowed. Full tuition and fees are assessed for audited courses.
R: Indicates the course has been repeated. The original grade does not count in determining the grade-point average.
NR: Indicates a grade was not reported to the Office of Records and Registration by the course instructor.
Grade-point Average
The grade-point average is determined by multiplying grade-point equivalents by the number of semester hours earned in a course, then dividing the total number of grade-points in courses completed at UIS by the total number of hours represented by those courses (excluding courses with grades of CR, NC, W, I, DFR, R, or AU).
Grade-point Equivalents are:
Grading Option: Credit/No Credit
Students who select the credit/no credit option must officially register their intent with the Office of Records and Registration before the course is three-fourths completed. No changes are accepted after the designated date. Limits on the number of hours earned under the credit/no credit option may be established by individual programs.
Credit is awarded under this option to undergraduate work that represents a grade of C or better or to graduate work that represents a grade of B or better. For lesser work, a grade of NC is recorded on the transcript. Courses taken for credit/no credit are not included in calculating the grade-point average.
Incomplete Work
Students with extraordinary circumstances that prevent them from completing all requirements for a course on time may request a designation of "I" (Incomplete) from their instructor. The assignment on an incomplete is solely at the instructor's discretion, and requires that the student complete all course requirements within 12 months of the end of the term for which the Incomplete was assigned. When an Incomplete is assigned, the instructor also submits a "provisional grade" reflecting the grade that the student will receive if the course is not completed at the end of 12 months. Please note that re-registration in the course is not necessary, unless required by the instructor.
Dean's List
UIS recognizes superior academic achievement of undergraduate students at the end of each fall and spring semester. Students placed on the deans' list must have a semester grade-point average of 3.75 or higher and be enrolled in at least eight graded semester hours with no incompletes for the semester.
Graduation Grade-point Average
- Undergraduate students must have a UIS cumulative grade-point average of at least 2.00 to receive a bachelor's degree.
- Master's students must achieve a UIS cumulative grade-point average of at least 3.00 to receive a master's degree.
- Doctoral students must earn a B or better in each core doctoral, required research, and concentration class.
Academic Probation and Suspension
Students who have a UIS cumulative grade-point average of less than 2.00 (undergraduates) or 3.00 (master's and doctoral students) will be placed on academic probation. Courses taken for credit/no credit do not count in calculating this average.
Undergraduate and master's degree candidates on academic probation may enroll for up to 12 credit hours in the subsequent fall or spring (six hours in the summer) with approval of the academic adviser; doctoral students are limited to eight hours in the fall or spring and four hours in the summer. Non-degree-seeking students on probation must meet with a designated adviser in the Office of Records and Registration and may also be required to meet with a representative of the academic program in which they are taking classes.
Students placed on academic probation for two successive terms will be suspended and must wait two terms before petitioning for re-admission. Students in exceptional circumstances may appeal immediately.
Complete details on UIS' academic probation policy are available from faculty advisers or the Office of Records and Registration.
- Location: UHB 1076
- Contact:
Registration (217) 206-6174
Records (217) 206-6709
Graduation (217) 206-7730
Degree Audits (217) 206-8216
- Toll-free (888) 977-4UIS (4847)
- Fax: (217) 206-6620
- E-mail:


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Downsizing Blog
The Folly of Centralized Spending
I've argued that the centralization of government spending in Washington over the past century has severely undermined good governance. Citizens get worse outcomes when funding and decisionmaking for education, infrastructure, and other things are made by the central government rather than state and local governments and the private sector. The problem is the same in the European Union, as a new article in Bloomberg on the funding of Polish airports illustrates:
Corporate Welfare by James T. Bennett
Across my desk this morning: James Bennett's new book, Corporate Welfare: Crony Capitalism That Enriches the Rich.
Pataki's Fiscal Record
George Pataki, the governor of New York from 1995 to 2006, is expected to announce the launch of his presidential campaign tomorrow. Pataki joins an already crowded Republican field and is expected to highlight his record as governor to win support. A review of Pataki's record presents a question: which Pataki will be running for the presidency?
Rebel Farmers and Government Cartels: How the New Deal Cartelized U.S. Agriculture
Marvin Horne doesn't look like a man in open rebellion against the United States government, but the 70-year-old raisin farmer and his wife Laura have had enough. If they get their way, they're not going to let the U.S. Raisin Administrative Committee take their raisins anymore.
Air Traffic Control Modernization
The Senate Commerce Committee held a fascinating hearing on Wednesday regarding air traffic control (ATC). The hearing showcased the momentum to proceed with ATC restructuring. Because aviation is crucial to the economy, such a reform would create wide-ranging benefits.
Privatize to Solve Government Cost Overruns
On large and complex government projects, costs will double from the original estimates. This tendency is called Edwards' Law of Cost Doubling.The Wall Street Journal reports on the PATH rail station at the World Trade Center. Edwards' Law was in effect:
EPA's Political Activism
From this incident, it appears that the EPA is not serious about taking opposing public comments into account before engaging in regulatory action. The purpose of public comments is to gauge public sentiment before a final rule is issued. The agency should act as an unbiased arbitrator of comments, not as an advocacy organization.
Reforming the Highway Trust Fund
Congress has created an ongoing crisis in the Highway Trust Fund (HTF). Year after year, policymakers spend more on highway and transit aid to the states than the HTF raises from gas taxes and other dedicated revenues. CBO projects that annual HTF spending will be $53 billion and rising in coming years, while HTF revenues will be $40 billion. That leaves an annual funding gap of at least $13 billion.
NYT Infrastructure Story Crumbles
Government spending on highways and streets (light blue) and transportation (brown) have been roughly flat the past five years after surging the prior five years. It is spending on education (dark blue) that has plunged, and which has dragged down overall government construction spending. I don't know why construction on schools and colleges soared and then plunged, but that is the main cause of the recent downward trend in public construction, not any form of transportation.
Amtrak's Budget
In the wake of the terrible train crash near Philadelphia, people are asking whether Amtrak budget cuts could have been a contributing factor. The short answer is that federal rail spending has not been cut. The longer answer is that rail spending has been greatly misallocated by Congress. Rather than being spent on maintenance along heavily used corridors (particularly in the Northeast), the federal rail budget has been frittered away on uneconomical rural routes and high-speed rail schemes.


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If a solution was found to the Riemann Hypothesis, would it have any effect on the security of things such as RSA protection? Would it make cracking large numbers easier?
If by 'solution' you mean confirmation or counterexample, then no. One could just assume the result, produce an algorithm whose validity requires the Riemann hypothesis, and use it to break RSA codes. Merely knowing if the Riemann Hypothesis holds or not doesn't help you construct any factorization method (although it can tell you a theoretical bound on how well a certain algorithm can run). It is possible, however, that in the process of resolving RH, we improve our understanding of related questions/techniques and use our improved knowledge to create algorithms that do have the potential to crack RSA codes.
Most mathematicians don't want to see RH resolved just for a yes/no answer. It is more important that research into the problem produces new mathematics and deep insights -- the resolution of the problem is simply one goal to reach and a yardstick to measure our progress. The situation is similar to the development of algebraic number theory with the goal of understanding higher reciprocity laws. Along the way a whole new interesting subject opened up spawning many decades of interesting mathematics, and the original motivation no longer holds center stage.
No. Practical applications can simply assume the truth of the Riemann hypothesis; proving it would increase knowledge but not itself affect security.
If RH is shown to be false, it would mean that the distribution of primes has more structure than anticipated (or a different type of structure, such as unusual correlations where independence was expected) and conceivably that could be leveraged for cryptanalysis of RSA or other number theoretic codes.
If RH is shown to be true, it is likely to be as a result of proving that some symmetries or algebraic structures connected to prime numbers, structures that are presently conjectural and not precisely understood, do exist. There are such structures that exist for function fields and have applications to cryptography (Frobenius map, Weil pairings, and etale cohomology come to mind) and it's possible that the expected but currently undiscovered constructions in the number field case would also be useful for making or breaking codes.
Of course any big leap in understanding of number theory would lead to a reconsideration of number theoretic algorithms in general, especially the ones in cryptography.
No, I don't believe so. The Riemann hypothesis controls (in some statistical sense) the distribution of primes, and one can prove stronger results about the running time of various number-theoretic algorithms if one knows that RH (or some its generalizations) are true.
However, in practice (e.g. if you are an intelligence agency trying to crack encrypted data) I think you can assume that all running time estimates whose truth hinges on RH are in fact true, since there is every reason to believe that RH is true. Thus these algorithms will in fact (with near certainty) behave as RH predicts that they would.


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This was my response to the StarDem article, regarding the League of Women Voters candidates' forum, held at Chesapeake College, on Sunday, October 21, 2012. Three candidates appeared: Muir Boda (Libertarian), Dr. John LaFerla (Democrat), and Michael Calpino (unaffiliated, but sounding like another Libertarian). Wait…isn't there a Republican candidate in this race? Yes…Andy Harris, the incumbent, was conspicuously absent, refusing to debate what he referred to as "write-in candidates."
First, it is a telling commentary that Harris has refused to publicly face off with those running for the same office. His lame excuse is that he still considers Rosen as his opponent, since her name is technically on the ballot. This attitude shows exactly the kind of personality Harris possesses…one of diversion, issue avoidance and lies.
The truth is that the State Democratic Party (along with all the Counties in the 1st District), voted to replace Rosen with Dr. LaFerla, naming him as the official Democratic candidate. Harris' refusal to face the public and his opponents is another attempt at his failure to accept responsibility for his poor performance while in office. He has one of the worst environmental records, both, while in the State Senate, and now as Representative. He should be ashamed of himself.
Dr. LaFerla deserves kudos for his dedication and integrity, stepping in to become the Democratic write-in candidate, even though his campaign is in an uphill battle this late in the race. Add to that, Harris' refusal to let the voters hear the truth, plus the almost impossible odds to raise substantial funds this late and you can understand why Dr. LaFerla is a longshot. All the more reason why it is important for the voters to come out and write-in his name.
Harris is more interested in "telling" people what to do, rather than "listening" to what the people say. He has lied outright on many occasions, twisting facts, ignoring the truth and using people's fears to gain votes. He has argued that "the government is attacking our freedoms." Tell us, Mr. Harris, what freedoms have you voted to take away? FDR referred to the "freedom from want", which translates into not going hungry, not being homeless and even, receiving basic medical care. These are all ideas you've voted against, as well as defunding assistance to the chronically ill and long-term care patients. It sadly sounds like the Nazis of the 1930s, who sought to divest German society of "the undesirables." Where did this philosophy, the foundation of your tenure in Congress, originate? They say the apple doesn't fall far from the tree!
As far as Boda and Calpino are concerned, neither one has a real understanding of history, freedom or what Americans need right now. Theirs is a campaign of ideologies, not a campaign geared towards helping people in the 1st District.
Calpino's statement, "We got along fine without the EPA until the '70s", would be laughable, if it wasn't such a serious misstatement of history. The truth, for those of us who weren't around in the '50s & '60s, is that we were NOT getting "along fine", as Calpino says. Our water and air had become polluted to the point that children were dying, emphysema and other lung-related diseases, including cancer, were rising at record levels, and big corporations had free rein over the environment, to destroy as needed…for progress and profit! Many people forget that the EPA was started and supported by a Republican administration…Richard Nixon. BTW…the same President who said that he wanted to see Congress pass a National Health Insurance bill.
Boda's statements are also laughable, especially his belief that all is well with the world since his employer, Walmart, pays men and women the same for equal work. Somehow, Boda has conveniently forgotten that Walmart was the target of several major lawsuits, alleging pay discrimination. He also ignores scores of studies that have shown the pay disparity that exists between men and women in America. His, "everything-would-be-fine-if-government-just-stayed-out-of-it attitude, is simplistic at best and an outright lie, at worst.


text:
This question already has an answer here:
I have a Python script for ArcGIS that makes a new feature class. I can add this to ArcGIS as a new Script (without parameters), however the resulting feature class is not automatically added to the map layers. How does this happen? Here is an example of my Python script:
import os
import arcgisscripting
out_feat_class = 'out.shp'
workspace = r'C:\temp'
gp = arcgisscripting.create(9.3)
gp.toolbox = 'management'
gp.workspace = workspace
# Create feature class
gp.CreateFeatureclass(workspace, out_feat_class, 'POINT')
# Add a field to it
gp.AddField(out_feat_class, 'Value', 'DOUBLE')
# Get insert cursor
rows = gp.InsertCursor(out_feat_class)
feat = rows.NewRow()
# Set attribute data
feat.SetValue('Value', 123.45)
# Set geometry
ptObj = gp.CreateObject('Point')
ptObj.x = 101.224
ptObj.y = 442.440
feat.Shape = ptObj
# Add to feature class
# Done, clean up
del ptObj, feat, rows
There are no errors, a feature class is made, but it does not automatically appear in the map. I'm using ArcGIS 10.0, but I'd like this to be backwards compatible with ArcGIS 9.3.


text:
September 26, 2010
My Cape Town photos: iScream and the Chocolate Stix concert
Photos by Deon Gurling
Popular Cape Town band iScream and the Chocolate Stix performed a free concert on Heritage Day at the V&A Waterfront as part of the My Cape Town Weekend celebrations. Their most well-known song is titled My Cape Town.
Gregory da Silva, better known as the Eggman, also joined in the fun. He had created a special My Cape Town hat for the occasion.
The appreciative crowd enjoyed the warm spring day with Table Mountain in the background.
Below are some pictures from the concert.


text:
News Release (Back to Menu)
New Book by Professor Carlos Ball Is First to Chronicle How LGBT Parents Have Changed the Legal Definition of Parenthood
Who is a parent? What makes a family? Are sexual orientation and gender identity relevant indicators of parental competence?
In The Right to Be Parents: LGBT Families and the Transformation of Parenthood (New York University Press, May 2012), Professor Carlos A. Ball provides the first detailed history of how LGBT litigants, in forcing the courts to address such questions, have shifted the decision-making in cases involving the well-being of children away from presumptions of care based on biology, marital status, gender identity and sexual orientation to individualized assessments about who can provide the most supportive home environment.
Recounting key cases over the past four decades, The Right to Be Parents tells the stories of lesbian, gay, bisexual, and transgender parents who bravely refused to lead closeted lives while seeking legal recognition of and protection for their relationships with their children. These parents have fundamentally changed the law of parenthood in the United States, writes Ball, "in ways that make it significantly more cognizant of the diversity and complexities of American families than it was just a generation ago."
Judith Stacey, NYU Professor of Social and Cultural Analysis and Sociology and author of Unhitched: Love, Marriage and Family Values From West Hollywood to Western China, praises Ball for focusing "his keen, compassionate and judicious legal mind on heart-tugging, often precedent-setting cases that sought to divest parental custody, visitation and adoption decisions of centuries of gender and sexual bias in U.S. family jurisprudence." The Right to Be Parents, she adds, is "an invaluable, engaging and eloquent contribution to family studies, legal thought and public knowledge."
In the first two chapters, Ball explores how courts, in custody and visitation disputes between gay and straight parents, have determined whether openly gay and lesbian parents can be good parents. In recent cases, he reports, "when a court applies the nexus test correctly by requiring that the heterosexual parent demonstrate a link between the other parent's homosexuality and harm to the children, the lesbian or gay parent is almost always able to persuade the court that sexual orientation should not be a factor in making custody and visitation decisions."
The next three chapters present litigation involving "planned" lesbian and gay families, which typically are families created through assisted reproductive technology or through adoption. The primary legal issue in these cases is who is eligible or qualified to be a parent to begin with.
The final chapter deals with transsexual parenting cases, which fall into two broad categories: those in which transsexual litigants seek to maintain relationships with their children in the face of claims by former spouses that their new gender identification makes them unfit parents, and those in which transsexual individuals seek legal recognition for their relationships with their children despite the absence of biological links.
Some of the parents in the lawsuits recounted by Ball won their court battles, while others lost. Overall, he reports, LGBT parents are making progress in the courts, progress reflected in the growing number of LGBT individuals who are raising children. Ball concludes: "It is ultimately the success stories of the actual parenting – more than the litigation victories – that will lead the country to provide LGBT families with the legal recognition and social respect they deserve."
Professor Ball is the author of several books on LGBT issues, including From the Closet to the Courtroom: Five LGBT Rights Cases That Have Changed Our Nation and The Morality of Gay Rights: An Exploration in Political Philosophy. A frequent speaker at conferences and symposia, in recent years he has delivered papers at the annual meetings of the Association of American Law Schools, Law and Society Association, American Philosophical Association, and American Political Science Association, and presented his scholarship at the Colorado, Columbia, Emory, Fordham, Harvard, Georgetown, Minnesota, NYU, UCLA, Virginia, and William & Mary law schools, among others.
Professor Ball received his B.A. from Tufts University, his J.D. from Columbia Law School, and his LL.M. from Cambridge University.


text:
Western Europe Travel Destinations
Plan a family vacation to Europe. Visit historic sites, national landmarks, and fun destinations.
1 of 8
First-time visitors to England will not want to miss London, one of the world's most bustling cities. It is a thoroughly modern metropolis in almost every way, yet visitors will come upon centuries-old castles and buildings around many corners. For a real taste of history, visit Buckingham Palace or the Tower of London. For a more modern thrill, take a ride on the London Eye, a 443-foot Ferris wheel. Outside of the city, visit the majestic white cliffs of Dover, or the mysterious Stonehenge, about 85 miles north of London.
Next: Ireland
More on: Travel and Vacations


text:
You limited your search to:
Access Rights: Public
Partner: UNT Media Library
Resource Type: Video
60 Seconds to Safety
Date: unknown
Creator: Knox, Gordon; Neeman, Robinson & Wilson, Donald
Description: This film outlines suggested fire safety measures for schools.
Contributing Partner: UNT Media Library
Date: 1953
Creator: Elwyn, Robert; Knox, Gordon; Beck, Sherman & Kannon, John
Description: Film overview of the history and services offered by the American Kennel Club.
Contributing Partner: UNT Media Library
The ABC's of Decorating Your Home
Date: 1951
Creator: unknown
Description: Film from Better Homes and Gardens on tips for redecorating the home, including information on color selection, furniture arrangement and window dressings.
Contributing Partner: UNT Media Library
The Active Peacetime Service
Date: unknown
Creator: Knox, Gordon
Description: This film shows the many ways that the U.S. Coast Guard serves its country. Viewers learn that, among other duties, the U.S. Coast Guard regularly monitors the weather, warns ships of nearby icebergs, and patrols inland waterways.
Contributing Partner: UNT Media Library
An Album of Christmas Carols
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Creator: Smith, Paul Lincoln & Bryant, Donald T.
Description: This film features the Columbus Boychoir performing Christmas carols off of their album, "Columbus Boychoir Christmas Carols."
Contributing Partner: UNT Media Library
An American Museum
Date: 1954
Creator: Guggenheim, Charles & Torno, Laurant
Description: A film about the City Art Museum of Saint Louis. It includes information on the roles of museum staff, including the duties of the curator. The film provides examples of how artifacts are examined for authenticity, techniques for display and information on traveling exhibits.
Contributing Partner: UNT Media Library
Americans at Home: Treasure for your Table
Date: 1956
Creator: Knox, Gordon; Oser, Jean & Turner, Howard
Description: Film about the history of craftsman housewares in America, such as crystal ware, fine china, and sterling silver.
Contributing Partner: UNT Media Library
Anesthesia for Operative Procedures of Short Duration, for Induction Prior to Ether and to Complement Nitrous Oxide-Oxygen
Date: unknown
Creator: Knox, Gordon; Elwyn, Robert; Gray, Hugh & Snow, William
Description: "This film has been prepared as an aid to the physician in obtaining a more complete understanding of the procedures, the limitations, and the advantages of Vinethene anesthesia" - from film.
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Arresting Engine: Mark 7, Mod 1
Date: 1954
Creator: United States. Navy.
Description: United States Navy training film on engine maintenance.
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Arteries of Progress
Date: 1949
Creator: unknown
Description: A film on transportation in Venezuela.
Contributing Partner: UNT Media Library


text:
I am teaching a course on manifolds, and soon I will have to prove the Stokes' theorem which, of course, involves defining oriented manifolds. There are many ways to define an oriented manifold. My favorite way is by the reduction of the structure group of the tangent bundle. But this definition and a couple of other that I know give just one orientation for the point: $GL(V)/GL^{+}(V)$ is ${\mathbb Z}/2{\mathbb Z}$ when $\dim V \ge 1$, but when $\dim V=0$ then $GL(V)$ has only one element. Of course, it is possible to define two orientations of a point by convention. I would like to know if is there any way to define the orientation for smooth manifolds in a uniform way that would also yield two orientations of a point.
I think instead of reducing the structure group of the tangent bundle, you could consider reducing the structure group of its top exterior power, which is always a one-dimensional vector bundle, even in dimension zero. Then the set of orientations of each connected component is a torsor under $GL_1(\mathbb{R})/GL_1^+(\mathbb{R}) \cong \{ \pm 1 \}$.
Here is a definition that works for all dimensions, including zero.
If you want to get rid of the Riemannian metric, you can also say that an orientation is a ray inside the top exterior power of $V$.
Here is a similarly well-behaved definition of spin structure. It also works all the way down to dimension zero. As above,
let $V$ be a real vector space equipped with a Riemannian metric.
To see the analogy with the above definition of orientation, note that $\Lambda^{top}\mathbb R^n=\mathbb R$. And so requiring an isomorphism between $\mathbb R=\Lambda^{top}\mathbb R^n$ and $\Lambda^{top}V$ is formally similar to requiring a Morita equivalence between Cliff($\mathbb R^n$) and Cliff($V$). You just replace the functor $\Lambda^{top}$ by the functor Cliff, and replace the 1-category of vector spaces with the 2-category of algerbas and bimodules.
I think the source of small oddity around the idea that a point has two orientations, is that a point is indeed canonically oriented, which is not the case for manifolds of positive dimension. There's a short discussion on this point in the wiki article about orientation.


text:
I have a computer on my local network for which I would like to use a nice alias, and therefore I put an entry in /etc/hosts. After a while this change is undone. The entry is gone from /etc/hosts. It happens repeatedly for several days now.
Do you know why this is happening?


text:
5 Horrifying Implications of the 'Star Trek' Universe
Star Trek presents us with a glittering, hopeful future full of worldwide peace and cooperation, scientific achievement, and universal discovery. It's a utopian society wherein all races (black, white, human, or alien) and genders (male, female, or alien-with-boobs) are considered equal. However, there are some horrible implications behind all the awesome technology and progressive ideology that are never addressed, probably because they make everyone in Star Trek look like incompetent goofs, closeted racists, or burgeoning sociopaths.
#5. Kirk Is Destined to Accidentally Start a Horrific War
In the 2009 reboot, cadet James T. Kirk gets thrown headlong into a desperate situation that sees him promoted to first officer and then to captain of the Enterprise within the space of 12 hours. And why not? His bold heroics and plucky determination save the ship, its crew, and indeed the entire planet Earth from getting blasted into scattered bloody chunks of smoldering space murder by a scowling trench coat alien with tribal tattoos and the face of Eric Bana.
So, at the end, Kirk attends a spirited awards ceremony that in no way resembles the ending of Star Wars, and Starfleet awards him with permanent command of the Enterprise.
"I thought we were switching to the green uniforms next week."
The Horror:
Think about how easy it is to unwittingly insult someone from another country if you don't know every little thing about their culture (innocent hand gestures that are friendly in one country will start a fistfight in another). Now imagine the potential for disaster when talking to someone from another species. See, that's why, in the Star Trek universe, it takes so much education and training to become captain of a starship -- in the original TV series, Kirk was the youngest captain in Starfleet history ... after a mere 14 years of training.
And at least eight years of stress eating.
The "You're a pretty good pilot, here's the keys to the ship!" plot point works fine in something like Star Wars, when Luke is pushed to the front of the Rebellion simply because they desperately need anyone with a pilot's license to help blow up a giant laser moon. But the Starship Enterprise is on a long-term diplomatic peacekeeping mission around the galaxy on behalf of the space United Nations. Its job is to contact new civilizations (as it says at the beginning of every episode) and spread the Federation's message of peace and togetherness. Humanity's entire relationship to these new races will be defined by this first impression. We've seen starship captains broker peace treaties and make decisions that affected the entire future of an alien civilization.
The rebooted Jim Kirk, meanwhile, is a drunken asshole who punched his way onto a Starfleet recruiting shuttle -- at the time of his whirlwind promotion, he'd only been in the academy for three years. Giving him the job is like sending Jason Statham to negotiate peace talks in the Green Zone. Putting that cowboy at the helm of Earth's humanitarian flagship is probably going to trigger more space wars than have ever been documented in the history of science fiction, even if the movie portrays the job as being mostly running down hallways and dangling off cliffs.
"Hmm. These tense peace negotiations could use a Kirking."
#4. Starfleet Doesn't Outfit Its Vessels With Basic Safety Features
The Enterprise is the pinnacle of human technological achievement -- it scoots through space at the speed of scientific victory to bridge gaps between galaxies that were previously impossible to even dream about crossing. Bearing that in mind, how often do you see the bridge explode in a burst of sparkler dust after the Enterprise gets hit by an enemy photon torpedo?
The Horror:
Bridge duty is only slightly safer than toaster bathing.
The answer is every goddamned time. Every time anything bad happens to the outside of the ship, the interior pisses out electric fire like an overloaded wall socket. It even frequently kills people, to the point that we're not sure which is more dangerous -- being a nonrecurring character on an away team, or being a nonrecurring bridge officer within range of an explodable duty station.
"Sweet space Jesus!"
Considering how advanced starship technology is supposed to be, there's no reason this deadly festival of lights should ever happen. Contemporary vehicles have all kinds of barriers between the users and the actual machinery -- circuit breakers, computer chips, even pulley systems built into the design specifically to keep people from getting detonated by console explosions. Starfleet apparently doesn't care enough about the staff of its ships to take obvious precautions that were perfected almost three centuries prior.
You could say that this is all because they're getting hit with energy weapons, and they overload the ship's systems and cause circuits to explode (or something), but damn it, this is a universe in which those weapons are common -- you're getting hit with that shit every week. It's time to invest in a system that lets you take minor damage to the hull without delivering the blast directly into the face of the first officer.
#3. The Holodeck Creates (and Then Destroys) Hundreds of Sentient Beings
Forget about the starship -- the holodeck is the one Star Trek invention everyone wishes they owned. It's a special room aboard the Enterprise that can create fully tangible holographic versions of any experience its user requests, providing a place where every member of the crew can cosplay in quiet seclusion, free from the sneering japes of judgmental shipmates.
"Computer, initiate Femme Fatale Blowjob Delta."
And of course, to complete the fantasy, the computer makes sophisticated artificial people for you to interact with. For example, in the episode "11001001," Riker has the holodeck conjure a woman for him, because it's Thursday, and Thursday is boner night. Riker goes through several different potential virtual companions that he dismisses for their subpar whorishness until finally deciding on "Minuet" as the holographic projection sexy enough to listen to him play jazz trombone for three hours. He has a drink with her and develops real feelings for the fake girl.
"For you see, my erection is real."
But hell, if you can't use the holodeck for that, what good is it?
The Horror:
These artificial people are sentient beings.
When Picard is playing 1920s detective dress-up during one of his holodeck jaunts, the computer-generated people he interacts with begin to realize that they aren't real. One of them asks Picard:
"When you're gone, will this world still exist? Will my wife and kids still be waiting for me at home?"
"Will the whole world still dress like shitty cosplayers?"
That's right! He had an entire memory of a real life, and a family, and a sense of self-preservation programmed into him. He was a real person, and he didn't want to die. And nobody cared. In another episode, a holodeck character concocted a plan to escape into the real world, rather than be trapped in that virtual hell where he can be switched off at the whim of whoever's playing with it that week. Now think about how Riker went rifling through a bunch of different girls before settling on the one he found hottest -- each woman presumably had a lifetime's worth of memories programmed into her, only to be destroyed after five miserable seconds of existence because Riker didn't think she was worthy of feeling his beard against her bare breasts. We're pretty sure that makes him a serial killer.
So, the holodeck is full of sentient beings that are created to satisfy a user's whim. And when the user is finished playing make-believe, those sentient beings are cast into oblivion without a second thought. The Federation is portrayed as a progressive utopia, but the holodeck seems like it could rank among the most horrifying moral lapses in the history of time.
Slavery is 100 percent cool as long as you kill them and immediately destroy the body.


text:
October 7, 2010
Nov. 1, 2010: This event has been canceled.
Mark Gelber, a professor at Israel's Ben Gurion University of the Negev, will deliver "Kafka, Zionism, and the Trial in Tel Aviv," on Wednesday, November 10, 6 p.m., at New York University's Edgar M. Bronfman Center for Jewish Student Life, 7 East 10th Street, First Floor Gallery (between 5th Avenue and University Place). The lecture, sponsored by NYU's Taub Center for Israel Studies, is free and open to the public. RSVP to firstname.lastname@example.com or 212.998.8981. Space is limited. Subways: Subways: N, R (8th Street); 6 (Astor Place).
A dispute over who has ownership of author Franz Kafka's remaining letters, sketches, and personal belongings is currently before a court in Tel Aviv. The legal battle and the history of the collection were recently recounted in a New York Times Magazine story, "Kafka's Last Trial" (September 26).
Gelber, director of the Center for German Studies at Ben Gurion University of the Negev, has authored works that include Kafka, Zionism, and Beyond (2004) and "Kafka und zionistische Deutungen" ("Kafka and Zionist Interpretations") in Kafka Handbuch (2008).
Editor's Note:
The Taub Center was established with a gift from the Henry and Marilyn Taub Foundation. The gift supports an endowed professorship and two graduate fellowships in Israel Studies, and funds lectures, seminars, scholarly colloquia at the Center, and other special programs for students, faculty, and the community. In addition to offering its own programming, the Taub Center works closely with NYU's departments to create cross-disciplinary programming, serving to broaden NYU's offerings in Judaic and Middle Eastern studies. For more, click here.
This Press Release is in the following Topics:
NYUToday-feature, Arts and Science, Around the Square, Events, Events and Traditions
Type: Press Release
Press Contact: James Devitt | (212) 998-6808


text:
Did you accomplish everything you wanted to this summer?
It's after Labor Day, so I can ask this, right? I'm sure like myself, many of you had lofty goals for the summer - go somewhere, do something, take that class (this is entirely inspired by this question in which I realized I had a little too much summer in my summer and didn't get to do some of the things I really wanted to. Maybe I aimed too high, maybe I over committed myself to other things that took priority.
On the flip side, I had a really good summer all the same. How about you?
10 Answers answer
Nope. Thanks to woot I spent too much spare time loafing around on your site. Way to go. Jerks!
Nope. Just looking ahead for all things pumpkin spice.
Not a single thing. This fall don't look to promising either.
I wanted to do absolutely nothing, but I wound up doing things, so no.
Yep, and only went to the ER once. Gotta luv it!
I made ice cream. That counts as something, right?
Not even close. The only thing even close to worthwhile I did with my summer was beating a few video games. Then my PS3 died.
On the other hand, I did get to relax a lot and that was something I arguably needed/ deserved.
Keeping the lawn mowed? Check. Keeping my shrubs alive in the blistering heat/drought? Check. Keeping my black triangle? Check. Stop smoking? Check. I believe I'm good here, thanks!
The only thing I accomplished this summer was falling in love. That wasn't on my to-do list!
@zuiquan: Mmm, ice cream.


text:
Sorry for delayed response - been on the road all day.
Usually we use the standard NetPipe, IMB, and other benchmarks to measure latency. IIRC, these are all point-to-point measurements - i.e., they measure the latency for a single process sending to one other process (typically on the order of a couple of microseconds). The tests may have multiple processes running, but they don't have one process receiving messages from multiple senders.
You will, of course, see increased delays in that scenario just due to cycle time - we give you a message, but cannot give you another one until you return from our delivery callback. So the longer you spend in the callback, the slower we go.
In one use-case I recently helped with, we had a "harvesting" thread that simply reaped the messages from the MPI callback and stuffed them into a multi-threaded processing queue. This minimized the MPI "latency", but of course the overall thruput depended on the speed of the follow-on queue. In our case, we only had one process running on each node (like you), and had lots of cores on the node - so we cranked up the threads in the processing queue and rammed the data thru the pipe.
Your design looks similar, so you might benefit from a similar approach. Just don't try to have multiple MPI callbacks each sitting in a separate thread as thread support in MPI isn't good - better to have a single thread handling the MPI stuff, and then push it into a queue that multiple threads can access.
Anyway, glad that helped diagnose the issue.
Once I read your comment, Ralph, about this being "orders of magnitude worse than anything we measure", I knew it had to be our problem
We already had some debug code in place to measure when we send and when we receive over MPI. I turned this code on and ran with 12 slaves instead of 4.
Our debug showed that once an SP does a send, it is received at the GP in less than 1 ms. I then decided to take a close look at when each SP was sending a message.
It turns out that the first 9 slaves send out messages at very regular intervals, but the last 3 slaves have 200 - 600 ms delays in sending out a message.
It could be that our SPs have a problem when many are running at once. It is also interesting to note that the first 9 slaves run on the same blade chassis as the GP and
the last 3 SPs run on our second blade chassis. I will later experiment with the placement of our SPs across chassis to see if this an important factor or not.
When I first reported this problem, I had only turned on debug in the receiving GP process. The latency I was seeing then was the difference between when I received a message
from the 10th slave and when I received the last message from the 10th slave. The time we use for our debug comes from an MPI_Wtime call.
Ralph, for my future reference, could you share how many processes were sending to a single process in your testing, and what were the size of the messages sent?
Hristo, thanks for your input, I had already spent a few days searching the faqs and tuning guides before posting.
From: firstname.lastname@example.com [mailto:firstname.lastname@example.com] On Behalf Of Ralph Castain
Sent: Wednesday, October 03, 2012 4:01 PM
To: Open MPI Users
Subject: Re: [OMPI users] EXTERNAL: Re: unacceptable latency in gathering process
Hmmm...you probably can't without digging down into the diagnostics.
Perhaps we could help more if we had some idea how you are measuring this "latency". I ask because that is orders of magnitude worse than anything we measure - so I suspect the problem is in your app (i.e., that the time you are measuring is actually how long it takes you to get around to processing a message that was received some time ago).
On Oct 3, 2012, at 11:52 AM, "Hodge, Gary C" <firstname.lastname@example.com> wrote:
how do I tell the difference between when the message was received and when the message was picked up in MPI_Test?
From: email@example.com [mailto:firstname.lastname@example.com] On Behalf Of Ralph Castain
Sent: Wednesday, October 03, 2012 1:00 PM
To: Open MPI Users
Subject: EXTERNAL: Re: [OMPI users] unacceptable latency in gathering process
Out of curiosity, have you logged the time when the SP called "send" and compared it to the time when the message was received, and when that message is picked up in MPI_Test? In other words, have you actually verified that the delay is in the MPI library as opposed to in your application?
On Oct 3, 2012, at 9:40 AM, "Hodge, Gary C" <email@example.com> wrote:
Hi all,
I am running on an IBM BladeCenter, using Open MPI 1.4.1, and opensm subnet manager for Infiniband
Our application has real time requirements and it has recently been proven that it does not scale to meet future requirements.
Presently, I am re-organizing the application to process work in a more parallel manner then it does now.
Jobs arrive at the rate of 200 per second and are sub-divided into groups of objects by a master process (MP) on its own node.
The MP then assigns the object groups to 20 slave processes (SP), each running on their own node, to do the expensive computational work in parallel.
The SPs then send their results to a gatherer process (GP) on its own node that merges the results for the job and sends it onward for final processing.
The highest latency for the last 1024 jobs that were processed is then written to a log file that is displayed by a GUI.
Each process uses the same controller method for sending and receiving messages as follows:
For (each CPU that sends us input)
While (true)
For (each CPU that sends us input)
If (message was received)
Copy the message
Queue the copy to our input queue
If (there are messages on our input queue)
… process the FIRST message on queue (this may queue messages for output) ….
For (each message on our output queue)
My problem is that I do not meet our applications performance requirements for a job (~ 20 ms) until I reduce the number of SPs from 20 to 4 or less.
I added some debug into the GP and found that there are never more than 14 messages received in the for loop that calls MPI_Test.
The messages that were sent from the other 6 SPs will eventually arrive at the GP in a long stream after experiencing high latency (over 600 ms).
Going forward, we need to handle more objects per job and will need to have more than 4 SPs to keep up.
My thought is that I have to obey this 4 SPs to 1 GP ratio and create intermediate GPs to gather results from every 4 slaves.
Is this a contention problem at the GP?
Is there debugging or logging I can turn on in the MPI to prove that contention is occurring?
Can I configure MPI receive processing to improve upon the 4 to 1 ratio?
Can I improve the controller method (listed above) to gain a performance improvement?
Thanks for any suggestions.
Gary Hodge
users mailing list
users mailing list
users mailing list


text:
How can I get my child to listen to me the first time I ask for something? He pretends he didnt hear after the 4th time I ask, but it is obvious he did hear me the first time. He is two years old by the way.
All training requires repetitions before it's really "learned" but these repetitions refer to separate situations. When you have to repeat yourself several times in a row in a single situation, then more discipline is required.
As a parent, your authority should not be ignored without some form of punishment, and this is something you can train. Toddlers need immediate feedback because they can't connect cause and consequence if the consequence comes much later. So the next time you're ignored, you must act -- you must escalate.
As others are saying as well, this will most often not lead to perfect obedience (which would be scary!). My toddler is no angel either and we often repeat ourselves, but we do try to use the above technique as often as we can, and we try to praise him when he does things right away.
When you speak, the child should comply promptly. Rather than repeating yourself, just wait an appropriate amount of time ... long enough for your command to be processed, a second or so ... then if the child hasn't complied apply punishment. For things that the kid knows from previous discipline are not accepted, don't warn or tell him to stop, go straight to punishment. Your kid is smart, right? He should not need to be told things twice.
Here is the thing, by repeating yourself when you know full well that you were heard, you are training your child that it is OK to ignore you until the nth repetition, or until the threat, or whatever the actual trigger is. But the trigger should be the first mention. Don't repeat, don't count, just issue the command, and apply consequences if the response isn't appropriate.
If you do this now (when he is 2), you will save yourself much grief when he is older because it will become ingrained that Dad speaks, kid responds.
I practiced this with my daughter, starting around 3, and my wife kept on with the repeated commands and threats. My wife thought I was being harsh, until after a few weeks she noticed that my daughter responded to me promptly. So then my wife started, and my daughter adapted.
Note: This is a very similar answer to this, but the question is very similar.
In addition with the other excellent answers, it might be helpful to ensure that you have your child's attention first. Before asking or telling my children anything, I make sure to call their name and wait until I have their attention.
Taking too long to respond (or worse, responding negatively) will result in an immediate consequence.
This pretty much eliminates the "I didn't hear you" excuse.
Yes, it is frustrating indeed. Our children are 7 and 5,5, so we have had to live with this for years now. I found the 1-2-3 Magic technique useful in that at least eventually they are forced to take notice. Of course, the net effect is that they know they can safely ignore the first 2 calls, and only need to react on the 3rd. But this is still better than nothing.
At one point, I declared the rule to be that by the time I utter the 3rd call, they should already be doing what they were told (instead of just starting to hastily obey at 3). This seemed to work, but we weren't consistently applying it with my wife, so it gradually got relaxed. Now I am trying to revive it.
In reality, I don't think they can be expected to always listen to what we are to say the very first time. Sometimes they really don't physically hear it, or are so much immersed in their inner world, dreaming, that the practical effect is the same.
I've always used the 1-2-3 countdown method, but as stated in the chosen post, this requires training.
Once you've established some kind of training, 1-2-3 is kind of a universal "there will be consequences" prompter. My training method for this was talking thru the steps.
etc, etc. It won't take very long to get to the point where you can simplify.
Very rarely, less than 4-5 times with all 5 of my kids, I've reached Three. 95% of the time One is enough. Ocassionally I have to go to Two. The benefit to this approach is that it's an established method that works beautifully in those moments when you don't have time to explain anything.
And then he gets his shoes on... or leaves the remote alone, or stops throwin bricks (megablock) at Marceline, or stops eating the cat food. You get the pic.
I have never worked out how to get a child to listen first time. I have however found that repetition is a good way to eventually get them to listen.
It sounds to me like you are doing the right thing and everything is going to plan.
The children want to be winner all the time. So tell the instruction. Then say lets see how fast you can work on this .. (lets see how fast you put on your shoes).. zero, one, two -- Many times the child will not listen this far -- so say 'too bad, you are a good boy / gal but going into the range of bad boys/gals. Come on, I can reset the counter once if you get up immediately.' Then if the child gets up (I expect him / her to do so at this stage), reset the counter, zero -- and the child wins since he has put on the shoes at 'zero' number itself. Declare him to be 'hero'! This works for my child, 7 years old.
I don't know how much this advice will change between a one and two year old, but if the command is something that I can physically make him do, I simply pick him up and make him do it after telling him sternly. If I tell him to come here, and he ignores me, I walk over to him, pick him up and carry him back to me. If I tell him to put up his toothbrush, but he keeps playing with it, I pick him up, carry him to the drawer, and take the toothbrush from his hands.
This will obviously not work in all situations, but it is helpful in some.


text:
Hello Dear fellows,
I thank you in advance for your help and ideas.
I have just read an article and want you to help me understand the rational behind a part of it.
We have two processes $v_t$ and $V_t$
such that:
$dv_{t}=\omega v_{t} dW_{t}$ $W_{t}$ is Brownian and $V_{t}=\sqrt{\frac{1}{T} \int_0^T {v_{t}}^{2}\,dt}$
We know that $v_{t}=(law)v_{0}\exp(\omega z \sqrt{T}-\frac{\omega^{2}T}{2})$ $z$ is a gaussian with mean 0 and std 1.
The next statement is the one that i did not fully undestand the way they authors did have it :
They state $V_{T}=(law)\exp(\omega z_{1} \sqrt{\frac{T}{3}}-\frac{\omega^{2}T}{6})$ ou $z_{1}$ is a gaussian with mean 0 and std 1 and $\rho (z,z_{1})=\frac{\sqrt{3}}{2}$
I have tried to approximate $V_{T}$ by $\frac{1}{T} \int_0^T v_{t}\,dt$ (We know that $\frac{1}{T} \int_0^T v_{t}\,dt \leq V_{T}$) But I did not obtain any pertinent result this way.
Does someone have an idea how to prove the law equality above?
Many thanks


text:
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WASHINGTON — Ideas are not responsible for the people who believe them, but when evaluating Senate Majority Leader Harry Reid's ideas for making the Senate more like the House, consider the source. Reid is just a legislative mechanic trying to make Congress' machinery efficiently responsive to his party's progressivism. And proper progressives think the Constitution, understood as a charter of limited government, is unconstitutional.
They think the "living" Constitution gives government powers sufficient for whatever its ambitions are, enabling it to respond quickly to clamorous majorities. Hence the progressive campaign to substantially weaken the ability of senators to use filibusters to delay action.
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Accessibility features
Information representatives provide assistance to hearing- and visually-impaired travellers. Disabled passengers are requested to confirm any special needs with their airline four days in advance. Facilities include ramps and lifts, escorted wheelchair services, TTY telephones, visual paging for hearing-impaired passengers and Braille buttons in lifts. The ATS system is fully accessible, with elevators provided at each of the five stops.
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Wow • Page 2
World of Warcraft anniversary documentary to debut at BlizzCon 2014
World of Warcraft is ten years old. Celebrate with a documentary charting the history of one of gaming's most persistent phenomena.
Blizzard trademark adds new hope to BlizzCon 2014 reveal rumours
World of Warcraft and Hearthstone fans should keep an eye out for something called Eye of Azshara over the next few months.
World of Warcraft will "definitely" be around in another decade
World of Warcraft is ten years old, and it's going to get ten years older.
Australian World of Warcraft servers now live
Blizzard ANZ has confirmed that World of Warcraft's Australian servers are now live. Have at them, antipodeans.
World of Warcraft is getting Australian servers at last
Holy mother of deep fried Mars bars, the day has finally dawned.
It's that time of year again: here's your MMO Halloween event round up
It's that time of year again, when MMO developers release spooktacular updates filled with ghosts, ghouls, pumpkins, werewolves and the like. Because of this, we thought we'd provide players with a small, non-comprehensive update on the various festivities.
World of Warcraft subs actually increased last quarter
World of Warcraft enjoyed a significant uptick in subscribers over the past three months, presumably in anticipation of Warlords of Draenor.
Pre-Warlords of Draenor patch hits WoW on Tuesday
World of Warcraft will be prepared for Warlords of Draenor with the Iron Tide update next week.
Here's eight of the dungeons you'll be running in Warlords of Draenor
Blizzard has released information pertaining to eight of the dungeons included in World of Warcraft: Warlords of Draenor.
World of Warcraft is "hard to watch", says Blizzard eSports boss
World of Warcraft may be the undisputed king of MMOs, but it's not the eSports champion it should be. Blizzard hopes to change that.
How to find the Robin Williams tribute in the WoW: Warlords of Draenor beta
World of Warcraft: Warlords of Draenor contains what can only be a tribute to the late, great Robin Williams.
If Blizzard doesn't expect World of Warcraft to grow, how can we?
World of Warcraft's subscribers have been on a downturn over the past few years, and Blizzard no longer expects that to change, apparently.
World of Warcraft UK subscriptions price hike inbound
World of Warcraft subscription prices are on the up – in the UK, at least.
Check out Warlords of Draenor's new trolls, warts and all
World of warcraft: Warlords of Draenor gives trolls a makeover, but instead of playing down blemishes the visual upgrade enhances them beautifully.
WoW: Warlords of Draenor will be released November 13
Blizzard has announced the release date for World of Warcraft: Warlords of Draenor.
WoW subs stand at 6.8 million, Warlords of Draenor date coming next week
World of Warcraft subs now stand at 6.8 million as of June 30 according to Activision.
Here's the Story of Warcraft - so far
If you have never played World of Warcraft, you may have wondered what the big deal is behind everyone raving about the lore. Hell, Blizzard had an entire panel devoted to lore during BlizzCon 2013. Trust us: it is a very big deal for players.
Elder Scrolls Online subs stand at 772,374 according to SuperData report
In SuperData's latest digital games report, the firm takes a look at the subscription-based MMO market and unsurprisingly, World of Warcraft remains the top revenue earner despite the sector's loss of subscription-based players.
Male Draenei's Warlords of Draenor overhaul is not exactly an Extreme Makeover
World of Warcraft expansion Warlords of Draenor introduces some massive changes to the MMORPG's established art style. This is not one of them.
Musclier, hairier and wearing better undies: meet WoW's new night elf
World of Warcraft's female night elf character model has had a bit of a makeover, and for once the process did not include "bigger boobs" or "simpering expression". instea,d Blizzard plumped for "thighs that could probably snap your neck".
Wow Latest
How to find the Robin Williams tribute in the WoW: Warlords of Draenor beta
If Blizzard doesn't expect World of Warcraft to grow, how can we?
WoW subs stand at 6.8 million, Warlords of Draenor date coming next week
Elder Scrolls Online subs stand at 772,374 according to SuperData report
Male Draenei's Warlords of Draenor overhaul is not exactly an Extreme Makeover
Musclier, hairier and wearing better undies: meet WoW's new night elf
WoW: Warlords of Draenor dev team discuss classes, PvP, maps – video
World of Warcraft player earns all 2,057 of the game's achievements
World of Warcraft: Warlords of Draenor Tauren makeover showcased
WoW: Mists of Pandaria Digital Deluxe Edition to be discontinued
World of Warcraft: level 90 booster costs $60 because Blizzard didn't want to devalue levelling accomplishment
Warlords of Draenor footage shows Shadowmoon Valley, Orc Warrior in action
WoW: Warlords of Draenor developer entry takes a look at female orc revamp
World of Warcraft – four realm connections occurring today, more to come February 27
World of Warcraft: Warlords of Draenor will add universal PvP toggle
WoW: Warlords of Draenor revamped character models detailed in latest blog post
Warlords of Draenor pre-purchase nets automatic level 90 boost
World of Warcraft migrations available free due to long queue times
Former WoW lead systems designer Greg Street joins Riot Games
Blizzard warns World of Warcraft users over "dangerous Trojan" being used to compromise accounts
MMO Winter Festivities: WoW, GW2, Lotro, SWTOR, Neverwinter, more
World of Warcraft pets, mounts now available at in-game store
World of Warcraft patch 5.4.2 now available on Public Test Realms
World of Warcraft's lead systems designer "Ghostcrawler" announces his departure
World of Warcraft's Pilgrim's Bounty returns with feasting tables, Plump Turkey pet


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September 20, 2010
New York University will host three lectures by cultural and literary critic Harry Berger, Jr.: "Collecting Body Parts in Leonardo's Cave" (October 5); "Caterpillage: Death & Truthiness in 17th Century Floral Dutch Still Lifes" (October 12); and "The Mercifixion of Shylock" (October 27). All three lectures begin at 6 p.m. The October 5 and October 27 lectures will be held at 20 Cooper Square, and the October 12 lecture will take place at NYU's Casa Italiana. Serving as respondents will be, respectively, Patricia Rubin, Director, The Institute of Fine Arts; John Walsh, Director Emeritus of The J. Paul Getty Museum; and Barry Edelstein, Director, The Public Theater's Shakespeare Initiative.
Berger is a founding faculty member of the University of California, Santa Cruz, where he is a professor emeritus. He is currently a visiting faculty member at NYU's Gallatin School of Individualized Study. Berger's work has covered a range of artistic and literary subjects: Renaissance studies, Shakespeare, Plato, Leonardo, Vermeer, Rembrandt, the Old Testament, Beowulf, Pepys, Dante, Robert Frost, and more. His books include: Second World and Green World; Situated Utterances; Making Trifles of Terrors; Imaginary Audition; Fictions of the Pose; Manhood, Marriage, and Mischief; and the forthcoming Caterpillage.
Tuesday October 5, 6 p.m.
Collecting Body Parts in Leonardo's Cave: Vasari & the Erotics of Obscene Connoisseurship
Respondent: Patricia Rubin, Director, The Institute of Fine Arts
20 Cooper Square, 5th Floor (on Bowery at 5th St.); Subways: 6 (Astor Place), R (8th Street).
Tuesday October 12, 6 p.m.
Caterpillage: Death & Truthiness in 17th Century Floral Dutch Still Lifes
Respondent: John Walsh, Director Emeritus, The J. Paul Getty Museum
Casa Italiana, 24 West 12th Street (between 5th and 6th Avenues); Subways: 4, 5, 6, L, N, Q, R (Union Square).
Wednesday October 27, 6 p.m.
The Mercifixion of Shylock
Respondent: Barry Edelstein, Director, The Public Theater's Shakespeare Initiative
20 Cooper Square, 5th Floor (on Bowery at 5th St.); Subways: 6 (Astor Place), R (8th Street).
The lectures are free and open to the public, with seating on a first-come, first-served basis. Photo ID is required for entry. For more information, visit www.NYiHumanities.org or contact Stephanie Steiker of the New York Institute for the Humanities, at 212.998.2101 or firstname.lastname@example.com.
The series is sponsored by the New York Institute for the Humanities, the Humanities Initiative at NYU, and the Gallatin School of Individualized Study.
This Press Release is in the following Topics:
Gallatin School of Individualized Study, NYUToday-feature, Arts and Science, Around the Square, Events, Events and Traditions
Type: Press Release
Press Contact: James Devitt | (212) 998-6808


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* Costs listed for 2016-2017 per semester.
Figure includes semester tuition for full-time students taking 12 - 18 points, deposit and required registration fees, and several program activities and excursions. For each point taken in excess of 18 points in a semester, there is an additional charge per point.
** Housing rates are the proposed fall 2016 and spring 2017 semester rates for the Paris study away site. These rates are pending NYU Board of Trustee review in summer 2016. Room rates are site specific and are generally determined by room type, rental costs, and associated support services. The figures cited in NYU's Cost of Attendance are based on annual room and board rates at NYU's location in New York.
Provided at no additional cost to the student, this service provides assistance through one of the world's largest providers of medical and security evacuation as well as general travel aid (e.g., lost document assistance). This company provides 24-hour global services with the help of out site staff to our students abroad.
Students planning to travel extensively outside the program parameters on weekends and holidays should budget accordingly. ** With the exception of tuition, all costs are estimated and may vary depending on student choices.
NYU's electronic billing system is the official means of generating tuition bills for all enrolled students. Within a few weeks of registering for classes, students will receive a message at their official NYU email address notifying them that a bill for tuition, fees, and housing is available.
Please visit the NYU Bursar website for details about the E-bill process.
Incoming Liberal Studies and Global Liberal Studies Freshmen who will be enrolling at NYU for their first year in Florence, London, Paris, or Shanghai follow the financial aid process described by the NYU Office of Undergraduate Admissions.
Disclaimer: The Board of Trustees of New York University reserves the right to alter the schedule of fees without notice.
|* Required Total (per semester)
|$31,947 - $33,687
|Tuition and fees
|$7,416 - $9,156
|Additional Total
|$5,780 - $6,480
|Round-Trip Airfare (based on travel from NYC)
|$1,000 - $1,200
|Monthly Metro (x 4)
|Meals, groceries
|$2,100 - $2,600


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San Diego State Aztecs vs Boise State BroncosWed, February 6, 2013 - 8:00 PMViejas Arena in San Diego, CA
We are sorry, the date for this event has already passed. This event took place on 2/6/2013. Click here to view upcoming events for San Diego State Aztecs.
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text:
Home > Food > Recipes > Chicken Pie
Chicken Pie
Type: Main Dishes
A classic supper-dish--ideal for family and guests.
Prep Time: 40M
Cooking Time: 40M
Serves: serves 6
Nut free
- 2 tbsp flavorless nut-free vegetable oil
- 5 oz button mushrooms
- 2 leeks, thinly sliced
- 21/2 cups chicken stock
- 2/3 cup dry white wine
- 1 bay leaf
- 2 carrots, sliced
- 2 1/4 lb chicken fillets, cut into bite-sized pieces
- 3 1/2 tbsp cornstarch
- salt and freshly ground black pepper
- 1/2 tsp chopped fresh thyme
- 1 quantity egg and nut-free Piecrust
- 1 egg, beaten
Save Recipe
Add to shopping list
- Preheat the oven to 400° F.
- Heat the oil in a saucepan, add the mushrooms, and fry for 5 minutes. Remove the mushrooms to a plate. Add the leeks to the pan and fry for 2 minutes, stirring, and remove to a plate.
- Add the stock, wine, bay leaf, and carrots to the pan, bring to a boil, reduce the heat, and simmer for another 5 minutes. Add the chicken and cook gently for another 5 minutes. Remove the chicken and carrots to a plate.
- In a small bowl, blend the cornstarch with 4 tablespoons of stock and stir until smooth. Pour into the pan and cook, stirring for 3 minutes until thickened. Season and remove from the heat.
- Spoon the chicken, all the vegetables, and the sauce into a deep 7 cup pie dish. Stir in the thyme.
- Roll out the pastry on a floured surface to 1/4 inch thick. Cut a 9 inch round for the pastry lid. Roll out the trimmings and cut a 1/2 inch strip, long enough to go around the rim of the dish.
- Dampen the edge of the pie dish with water and press the strip of pastry around the rim. Dampen the strip.
- Carefully lift the pastry lid and place over the top of the pie dish and firmly press it to the strip all around to seal. Crimp the edges together if you desire. Make a small slit in the center of the pastry to allow steam to escape. Glaze the pastry with beaten egg.
- Bake until golden and the pie is hot through, about 40 minutes.
- Watch out for bouillon cubes, which may contain dairy or gluten.
Dairy free also nut free: Follow the recipe for Nut free, using one quantity of dairy-free Piecrust.
Egg free also nut free: Follow the recipe for Nut free. To glaze, replace the egg with 2 tablespoons of milk or, if a shinier glaze is preferred, use the following gelatin glaze. Put 2 tablespoons of water in a small bowl and sprinkle 1 tablespoon of gelatin over. Let soften for 5 minutes then stand the bowl in a pan of gently simmering water and stir until dissolved completely. Brush over the pastry using a pastry brush, being careful not to let puddles of the glaze collect in the pastry hollows or crimped edges.
Gluten free also nut free: Follow the recipe for Nut free, using one quantity of gluten-free Piecrust. The gluten-free pie crust will have a slight yellowish hue because of the cornmeal in the pastry.
excerpted from:
Excerpted from Allergy-Free Cookbook.
Copyright © 2009 Dorling Kindersley Limited.
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During our regular game session, everyone keeps saying,"We need to find the mcguffin!". Is this a new sandwich or something?
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A MacGuffin is a device, object, or abstract need whose finding or obtainment is the force that pushes characters and evildoers into action.
While MacGuffins is a typical plot device to push a story forward, in D&D is rather typical (I would say almost cliched) to use a broken MacGuffin, where the single pieces must be found and assembled. This allows you to carry long campaigns with different settings easily.
I strongly advise against the use of the so called Red Herrings (which are false MacGuffins that divert the attention from the actual plot/MacGuffin) in roleplaying. Players generally don't expect their attention to be diverted or the plot to be too intertwined. If they hunt a red herring and find out it is indeed a red herring, they could consider the DM wrong or accountable for having changed the story under their feet.


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New Tool Measures Secondhand Smoke
You know exposure to secondhand smoke is unhealthy. What if you had a tool to help explain the risks to well intentioned, back-porch-smoking relatives and friends?
Most people are aware of the dangers of secondhand smoke—the smoke that comes off a lit cigarette or is exhaled by a smoker. That's why many people won't smoke around children, or will step outside on the porch or exhale through an opened window in the bathroom to "sneak" a cigarette.
"I'm not even in the room—how can it be harmful?"
They mean well, but the health risks are there even when the visible smoke isn't. It can be difficult to convince a well-intentioned smoker, especially if they are a visiting friend or relative, that they are exposing you to second hand smoke. What if there was a tool that could help you show them that cigarettes smoked on the sly—even alone in the car—leave behind harmful chemicals? Researchers from the Norris Cotton Cancer Center and Dartmouth College have developed a tool that may soon help you do just that.
Smaller than a cell phone, real-time record of second hand smoke exposure
The multidisciplinary research team has invented a secondhand tobacco smoke sensor, smaller and lighter than a cellphone, that uses polymer films to collect and measure nicotine in the air. A chip records the data on a memory card, noting when and where the exposure occurred and even the number of cigarettes smoked.The sensor can also detect thirdhand smoke, or nicotine off-gassing from clothing, furniture, car seats, and other material.
Prouty funds launched research that led to invention
In 2008 Norris Cotton Cancer Center researcher and Dartmouth-Hitchcock pediatrician Susanne E. Tanski received a $50,000 Prouty pilot grant to support preliminary research for the secondhand smoke exposure sensor. Prouty grants give early support to researchers with creative ideas, allowing them to obtain the preliminary data needed to compete for outside funding. Over a five year period a portion of Prouty donations—$1.2 million—were invested in small Prouty projects. Those investments returned over $20 million in larger federal grants.
The technology for the sensor prototype, described in a study that recently appeared in Nicotine & Tobacco Research, received additional funding from the American Academy of Pediatrics Julius B. Richmond Center of Excellence, funded through the Flight Attendants Medical Research Institute.
Tanski will be doing pilot work with the prototype this summer, testing it on nonsmokers to document where and when they are exposed, and the researchers plan to convert the prototype into a wearable, affordable, and reusable device to measure secondhand smoke. It will be more accurate and less expensive than current secondhand smoke sensors, which provide only an average exposure in a limited area over several days or weeks.
No amount of exposure is safe, so measuring secondhand smoke can help
The reason porch or bathroom smoking doesn't work is because separating smokers and nonsmokers within the same space doesn't eliminate risk, Tanski explained at a recent NCCC Grand Rounds presentation, Eliminating Exposure to Secondhand Smoke. You can't safely smoke in another section of the house, just as you can't have a 'no peeing' section of a swimming pool. Chemicals from cigarette smoke permeate surrounding air and surfaces, increasing the risks of cancer, cardiovascular disease, and childhood illness for all exposed to it. The 2006 U.S. Surgeon General's Report found that there is no safe level of exposure to secondhand smoke.
Secondhand smoke sensors developed from the Dartmouth prototype could be used to enforce public smoking bans in rental cars, hotel rooms, apartment buildings, and restaurants. And having documented exposure information for a specific situation (like the family room right down the hall from the opened window) could really help with those awkward "no smoking" conversations with family and friends.
Dartmouth College has a patent pending for this technology. The study was supported by the American Academy of Pediatrics Julius B. Richmond Center of Excellence, funded through the Flight Attendants Medical Research Institute, and by a Prouty pilot grant the Norris Cotton Cancer Center at Dartmouth Hitchcock Medical Center.
April 22, 2013
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text:
A husband is supposed to ensure his wife's Simchas Yom Tov by buying her something (new jewelry, clothes, etc.) for the holiday. If she has already received such an item from a different source, and will thus already have this kind of simcha, does the husband still have an obligation to buy her something?
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Continuing from my comment above referring to kidushin 34b, it seems:
Rashi holds there is no obligation for a woman to have simcha, the husband is required to buy her stuff (nowadays, bring her to Yerushalayim bizman hamikdash) because her happiness enhances his happiness.
Others (Tos., Ritva, et al.) reject Rashi and hold that women have an obligation, but only through their husbands as per the pasuk. A widow then has no obligation and is only mentioned in the pasuk as an aniya who the man must support as tzedaka when going up to Yerushalayim.
According to the above opinions, the answer to your question would be "yes".
Our sifrei halacha seem to go with the Rambam who,at the beginning of hilchos chagiga states categorically, that women are obligated in the simcha. The Lechem Mishna's approach is that Abaye, who stated in the gemara that women do not have an obligation, is later rejected for R' Zeira. Accordingly, a widow must find a way to have simcha.
Although one can find room in the Rambam to say that a husband is merely charged with making sure his wife has simcha (and the answer to your question would be "no", I still have no conclusive proof.
We poskin it is husbands chiyuv hence women forgets yaleh vyovo does not need to repeat since she has no chiyuv seudah its her husbands job to make her happy not the food
A husband is always obligated to bring simcha towards his wife especially on holidays and shabbat, if she has whatever she want you can just stick with basic flowers and chocolate.


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I found this question and answer on UCLA's website:
Let $W_1$ and $W_2$ be subspaces of a vector space $V$ . Prove that $W_1 +W_2$ is a subspace of $V$ that contains both $W_1$ and $W_2$.
The answer given:
First, we want to show that $W_1 \subseteq W_1 +W_2$. Choose $x \in W_1$. Since $W_2$ is a subspace, $0 \in W_2$ where $0$ is the zero vector of $V$ . But $x = x + 0$ and $x \in W_1$. Thus, $x \in W_1 + W_2$ by definition. Ergo, $W_1 \subseteq W_1 + W_2$. We also must show that $W_2 \in W_1 + W_2$, but this result is completely analogous (see if you can formalize it).
My question:
Why is it enough to show that $x + 0 \in W_1 + W_2$, $0$ is just one element in $W_2$, why don't we have to show, for example, $x + y \in W_1 + W_2$?