kxyvr

13 ms·

61.
by kxyvr 4y ago
I'm an applied mathematician and have been working independently as a consultant for nine years now. I don't have all of the answers for you, but perhaps some of the following may help. - Regarding retirement, those who run a bus
62.
by kxyvr 4y ago
I don't think it's this way everywhere, but I do worry that many of these store disposal options may not work particularly well. A few weeks ago, I had an argument with an employee at Home Depot. I was looking for the battery di
63.
by kxyvr 4y ago
Honestly, a combination of time, money, and expertise. Getting a good, low level factorization that works well in parallel is hard. I can write them. Others write them better. However, outside of that, I don't have any financial su
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by kxyvr 4y ago
I work as a computational mathematician. Part of the problem on my end is that while the libraries have gotten better, they have not contained the operations that I need for good algorithms in my field. As an example, when GPUs first came
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by kxyvr 4y ago
I'm really sorry that happened to your sister, but I'm also glad that's working out. Really, despite all of the pessimism about end-of-life decisions, ECMO is good technology and your sister's case is good evidence of t
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by kxyvr 4y ago
Outside of the other comments here, I would also suggest considering the expected outcomes rather than just whether or not someone will live and die. For example, if someone spends a month on ECMO and the end result is that they're ne
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by kxyvr 4y ago
Honestly, this is pretty normal, if aggravating. When I moved to TX, a registration for an out of state LLC was $750. The registration system required a credit card up front to levy a $1 charge for every name search on a web forum to ensu
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by kxyvr 4y ago
An out of state LLC registration in Texas is $750, plus you have to give them a credit card up front, so they can charge you $1 per name search on a web forum to ensure that your business doesn't conflict with any existing business. T
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by kxyvr 4y ago
My wife is an ICU physician, so I've been watching this from the sidelines. I can't emphasize enough on how badly COVID broke the system. There's always been problem with staffing and burnout. However, COVID really brought
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by kxyvr 5y ago
As a note about the markets in Santa Fe, there are some volume producers of all sorts of goods, but it illegal to market something as made by Native Americans and have it be made overseas. It's the Indian Arts and Crafts Act of 1990:
71.
by kxyvr 5y ago
In case you or anyone else knows, are there other libraries that implement a high performance sparse QR? Really, I need a Q-less QR factorization for sparse matrices. As far as I know, there are only two: one comes from MKL: https:/
72.
by kxyvr 5y ago
Unfortunately, I can't show a picture here, but I like one example in the introduction of Wolsey's book, "Integer Programming." It provides a short example of why rounding the answer from a continuous (LP) relaxation of
73.
by kxyvr 5y ago
For many applications, you're correct. Logic works just fine. However, we should also be careful about this because for many machines the programming interface to control it has a low level controller that may in fact have a PID to p
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by kxyvr 5y ago
I don't know whether or not this particular story is true, but it's within the realm of plausible given what I've heard from my wife who is an ICU physician with a residency in emergency medicine. The last two years have bee
75.
by kxyvr 5y ago
It has to do with whether the eigenvalues of the Hessian are well clustered or not. Generally, to get fast convergence near an optimal solution, the Newton system needs to be solved well enough. What well enough is can be difficult to det
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by kxyvr 5y ago
As a note, 2nd order methods do not require calculating the entire Hessian nor do they require factorizing the matrix. A trust-region method using Steihaug-Toint (truncated) CG or a Newton-Krylov method simply require Hessian-vector produc
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by kxyvr 5y ago
Thanks for providing another suggestion on the real analysis front. Really, I agree with you on the Rudin front. Honestly, I think that real analysis is the largest barrier for people trying to self study applied math. I'll mention h
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by kxyvr 5y ago
Primarily, it gives us the power to work with functions that return other functions. In many ways, it's kind of like going from array processing in Fortran to functional programming. Outside of the esoteric, there's a choice tha
79.
by kxyvr 5y ago
Laugh. I was hoping no one would ask since I don't have a great answer! We used "An introduction to Hilbert space" by Young. It's fine? There's stuff in there like Sturm-Liouville systems that I don't parti
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by kxyvr 5y ago
If anyone wants to attempt this, that's awesome. It's a lot of hard work, but I think it opens a lot of opportunities for personally and professionally. I've a Ph.D in Applied Mathematics from a traditional program, so I wa
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by kxyvr 5y ago
Piggybacking the comment about Georgia becoming less attractive and competitive for good faculty, in 2015 Wisconsin significantly weakened the tenure system as well. I was curious about the affect of that decision and found this recently p
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by kxyvr 5y ago
Has anyone had success getting any of these containers to work with a camera? Recently, my bank discontinued their website based deposit system for checks in favor of their app. I'm reluctant to keep an app with full access to my acco
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by kxyvr 5y ago
In many ways, I do agree with you. I don't want there to be multiple tiers of healthcare based on someone's lifestyle. I believe strongly that if someone is sick, then they deserve help. At the same time, there are several impli
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by kxyvr 5y ago
I think part of the difficulty with the libertarian point of view regarding the COVID vaccine is that not all parties are given a free choice either. For example, if someone refuses a vaccine, should an emergency room be free to refuse car
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by kxyvr 5y ago
No. It is not. The difference between COVID and something like cancer is that cancer is not highly contagious. COVID is. Further, it's contagious and deadly. That's why it requires special care. COVID is also not the only dis
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by kxyvr 5y ago
If someone is COVID positive, then they are likely contagious even if they have no symptoms. This means that they must be isolated from the other patients that do not have COVID or else there is a high risk of infection spreading to other
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by kxyvr 5y ago
That, I don't know. Since we've been together, prior to COVID, I never recall her mentioning they had trouble getting nurses. If there was a particularly busy night, the nurse manager had a number of nurses on-call who would the
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by kxyvr 5y ago
Yes. Unquestionably. Here are a few different articles from around the gulf coast states that speak to this: https://www.khou.com/article/news/health/coronavirus/houston... https://www.npr.or
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by kxyvr 5y ago
Since most of this community is outside of healthcare, I figure I might as well share some of what this experience has been like for my wife, who's an ICU physician. In short, it's not good. Normal times for her community are alw
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by kxyvr 5y ago
I still believe that there is a misconception of what this document states. On page 5 of what you refer to, the authors state: The terms used in the engagement section of this resource are ideas presented in the dismantling Racism work

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