btrettel

73 ms·

391.
by btrettel 6y ago
> Right now so many notes are done privately and that's a shame. I have a notes SVN repository dating back about a decade with over 600 text files. I could split them into many more files as these notes aren't "atomic&quot
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by btrettel 6y ago
What are some good examples of web-1.0-style sites (from that era) that are still being updated semi-regularly? I can find a lot of web-1.0- style sites that are updated regularly, but few originally from that time. Daniel J. Bernstein&#x2
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by btrettel 6y ago
That's what PhD fellowships like the NSF fellowship are supposed to do as far as I know.
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by btrettel 6y ago
I'm almost done my PhD (defense next week) and I'm starting as a patent examiner later this month. That was the only job I was offered, and I applied overwhelmingly to research positions. There really aren't enough research p
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by btrettel 6y ago
This Atlantic article cites a study which indicates that scientists don't lose credibility when advocating for political positions: https://www.theatlantic.com/science/archive/2017/02/when-sci... No
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by btrettel 6y ago
As far as I can tell, that quote does not appear in the cited book. https://books.google.com/books?id=BYsW6qTP0pMC&printsec=fron... A nearly identical quote appears in this editorial by the same author: https:/&#x
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by btrettel 6y ago
Location: Washington DC metro area Remote: Yes Willing to relocate: Yes Technologies: Python (10+ years), Fortran (9 years), HTML (10+ years), Linux (10+ years, 9 years HPC experience), Less experience with Pandas, C, SQL, CSS Résumé/C
398.
by btrettel 6y ago
Terry Tao mentions that notation can help with error detection. Anyone here aware of some good examples? One that I like is that in Einstein notation you can't have 3 of the same index, e.g., u_i u_i u_i is invalid.
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by btrettel 6y ago
> The more popular finite volume method in industry, can also be seen as a variational problem. By that standard, you could interpret almost any numerical method for PDEs used in academia or industry as variational (aside from some fring
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by btrettel 6y ago
> Almost every time a PDE is solved on a computer, it is a variational problem. Not true. In computational fluid dynamics, variational methods are only one category out of many, and they aren't dominant.
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by btrettel 6y ago
Interesting essay. I read it months ago and am just going off my memory here. My main problem with patronage is that those who would succeed under it would tend to do "sexier" research and also be better at sales. My own research
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by btrettel 6y ago
Seems that I edited my comment to add an example at the same time you posted yours.
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by btrettel 6y ago
I work in fluid dynamics. Page numbers for an article are standard. Page numbers for a specific piece of information are not. E.g., it's common for someone to write [1] but not [1, p. 528]. In fact, I recently had a typesetter seem
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by btrettel 6y ago
I basically work in mathematical physics and I'd like a system that allows me to write one thing, and output LaTeX code that can be put in a publication and also check the math. Coq and the like seem way too "low-level". I&#x
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by btrettel 6y ago
There's a HTTP status code for pages which were deleted: 410 Gone. https://en.wikipedia.org/wiki/List_of_HTTP_status_codes#4xx_... This was famously used by Mark Pilgrim: https://en.wikipedia.org/w
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by btrettel 6y ago
I asked for examples in context . E.g., how might one use nanopublications to document an assertion on a webpage. The examples page on the website seems to be for someone already very familiar with Linked Data/semantic web/etc. I
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by btrettel 6y ago
As many of those who have read academic papers know, even claims with citations are often suspicious. Time and time again I've found cited sources that don't say what was claimed. Sometimes, citations are not specific enough (e.g.
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by btrettel 6y ago
One disadvantage of this approach is that the mouse needs to be over the text area that's being pasted in to.
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by btrettel 6y ago
After some trial and error, I was able to make the following bash script, which will take the X clipboard selection (containing math operations you want to perform), run it through bc (to do the math), replace the X clipboard with the resul
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by btrettel 6y ago
Fair points. I've made a few refinements already on paper, switching to an ODE model rather than a difference equation and changing the knowledge production rate to vary. If there are diminishing returns then we would expect c2 to decr
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by btrettel 6y ago
I've had similar thoughts lately. Here's a simple mathematical model of the process that I felt inspired to create by your comment: k[i] = (1 - c1) * k[i - 1] + c2 where i is the generation number, k is the amount of knowledge we
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by btrettel 6y ago
I've thought about this general approach for funding my own research. Unfortunately it seems hard to do in practice. If the goal is consulting specifically then it's going to take a while to build up the client base needed. I&#x
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by btrettel 6y ago
I worked through a lot of this partial differential equations book during downtime while working in a gas station after my freshman year of college: https://www.amazon.com/Differential-Equations-Scientists-Eng... Might be a
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by btrettel 6y ago
Some people like myself and gwern have lists of papers that we're looking for: http://trettel.org/papers-to-find.html https://www.gwern.net/Fulltext
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by btrettel 6y ago
> To my understanding, as a dilettante in the science of fluids, turbulence is an open problem mostly only in subfields pretty far removed from everyday engineering: > The other group I’m aware of are those who study large-scale turbu
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by btrettel 6y ago
What's more interesting to me than HEP is how HEP became such a big deal. I asked on HN before why people find HEP interesting and the responses were enlightening to me as someone who finds HEP boring: https://news.ycombinat
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by btrettel 6y ago
Sabine's argument is basically that many predictions are conditional, and the conditions often aren't met in practice, therefore we shouldn't judge scientific models based on predictions. Well, the conditions are met somet
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by btrettel 6y ago
Seems obvious in retrospect but wasn't obvious to me. Thanks for the insight!
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by btrettel 6y ago
I recall from some undergraduate classes I took (in mechanical engineering) that you can "convert" between a Laplace transform and a Fourier transform by saying that s = i * omega. This has some appeal from a purely algebraic stan
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by btrettel 6y ago
What are some other good scientific databases compiled from the open literature? Are there any best practices for the construction of similar databases?

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