dsqrt

6 ms·

1.
by dsqrt 6mo ago
The goal of academic research is to create understanding, not papers. If we outsource all research to LLMs, then we are only producing the latter.
2.
by dsqrt 2y ago
The NRPy package and tutorials are a good place to start: https://nrpyplus.net/
3.
by dsqrt 3y ago
You should check out Sage Manifolds [1]. It's built on top of Sage Math, but I think it can also use SymPy as computational engine. [1] https://sagemanifolds.obspm.fr/
4.
by dsqrt 3y ago
The finite-differencing time-domain method [1] (sometimes also called leap-frog [2]) is easy to implement and robust for scalar and electromagnetic waves. This other book by LeVeque [3] is a great introduction on finite-differencing methods
5.
by dsqrt 3y ago
Matter in neutron stars is compressed together by the enormous gravity. Once set free on your floor, this material would no longer be held together and will start expanding at close to the speed of light. The resulting explosion will probab
6.
by dsqrt 3y ago
I think this is, at least in part, specific to the US/Western tradition. US physics curriculum is built to get people up to speed with quantum physics ASAP, because this is the core of most physics research in US physics departments. I
7.
by dsqrt 4y ago
RAS used to have all articles available to everyone for free after 1 year (immediately if one wanted to pay for open access). I thought this was a reasonable compromise. The new policy will damage early career researchers and groups at less
8.
by dsqrt 4y ago
This is interesting, but all of the links I tried were broken or led to broken pages. Unfortunately, with the widespread use of LMSs a lot of useful material is now behind University firewalls.
9.
by dsqrt 4y ago
DOE [1], NASA [2], NSF [3] already require most research papers to be made publicly available. --- [1] https://www.osti.gov/ [2] https://www.ncbi.nlm.nih.gov/pmc/funder/nasa/ [3] https:&#x2F
10.
by dsqrt 5y ago
Most of the federal grants I am aware of have duration of 3+ year (the typical duration of a PhD after having completed the course work).
11.
by dsqrt 5y ago
Perhaps Jamendo https://www.jamendo.com/ ?
12.
by dsqrt 6y ago
Coincidentally, Alcubierre recently posted a review article on warp drives: https://arxiv.org/pdf/2103.05610.pdf . It looks like a good introduction to this topic.
13.
by dsqrt 6y ago
I would also recommend "The Large Scale Structure of Space-Time" by Hawking and Ellis. It uses some advanced mathematics and some prior knowledge of GR, at least at the level of Schutz or Carroll, is needed, but it is a wonderful
14.
by dsqrt 7y ago
For what it means, I know some of the people on that list and I can say that they are real scientists.
15.
by dsqrt 7y ago
It is in the first page, but the link points to the FAQ instead.
16.
by dsqrt 7y ago
C has the "restrict" keyword to indicate that no aliasing should occur.
17.
by dsqrt 7y ago
Single academics will likely not bother with Office365/Google, but University administrators are the ones buying enterprise software. In the past few years the trend has been for the central administration to push departments to give u
18.
by dsqrt 7y ago
Exactly. The data is about the backgrounds of data scientists, but is incorrectly interpreted as the probability of becoming a data scientist given a certain background. Obviously the two are related (Bayes' theorem), but to draw any c
19.
by dsqrt 7y ago
I am just thinking that, if future archeologists discover these warnings / language in frequent association with art, then they will probably not think twice about excavating an actual nuclear disposal site that exhibits them. They wil
20.
by dsqrt 7y ago
Doesn't embedding these messages into art defy their very purpose of being a warning?
21.
by dsqrt 7y ago
Fully agree. Academic career is already demanding enough without having to force each scientist to run his/her own PR operation. Outreach is important, but it is better done at the group or institutional level.
22.
by dsqrt 8y ago
I got my PhD in 2013 (computational astrophysics / general relativity), I did almost 6 years as postdoc at two different institutions, and I am about to start a tenure track job. I write code for and run fairly large-scale HPC simulati
23.
by dsqrt 8y ago
I work on gravitational wave related science. I am not part of LIGO, so I speak only for myself. I think that most people in the scientific community have no doubts on the interpretation of the LIGO data for which they were awarded the Nobe
24.
by dsqrt 8y ago
I have studied in Europe (Italy and Germany) and now I am in the academia in the USA. Having student evaluate professors has been the standard practice for many years in Europe. I also do not think that American students have a worse attitu
25.
by dsqrt 10y ago
They are usually sold refrigerated in Italy
26.
by dsqrt 10y ago
Large and close is respect to the light-crossing time and the accuracy with which you want to timestamp an event. If you care about years, 1 light year is already a large distance.
27.
by dsqrt 10y ago
I agree that you can make such a construction in theory. However, in practice there is no way we can synchronize our clocks with an observer at the location of that binary star system. There is also no reason to do it: the precise time of t
28.
by dsqrt 10y ago
Please see my other reply below. Reference frames are local constructs. There is no such a thing as a (unique) reference frame of the entire galaxy that can be used to define simultaneity. In fact there are infinitely many of them.
29.
by dsqrt 10y ago
Reference frames are local constructs, they cannot be used to (uniquely) define simultaneity over large distances. The time of any single event is just a "tag" in relativity. In fact there are infinitely many surfaces of simultane
30.
by dsqrt 10y ago
According to OP these are "12 equations in 18 variables, where the variables were restricted to integers in the range [1, 26]". Can you solve them using the elimination theorem?

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