tfgg

25 ms·

211.
by tfgg 13y ago
Scientists? People who study the physics of the system in question by building models, simulating them and comparing to data? I'm not sure what else you expect. I'll take them for big policy decisions any day over some blogger che
212.
by tfgg 13y ago
> High speed interconnects are not worth the extra cost. They just compensate for poor programming. Sorry, that's complete rubbish. Some problems just can't be made embarrassingly parallel or near so. You might be able to swap
213.
by tfgg 13y ago
As far as I understand, you're saying that high-speed interconnects are largely a waste of time? (and apparently that doing protein MD is a waste of time, but that's a scientific question that I'm going to disagree with you o
214.
by tfgg 13y ago
It looks like low-discrepancy sequences ( http://en.wikipedia.org/wiki/Low-discrepancy_sequence ) might be applicable for your quasi-Monte Carlo sampling of the scattering.
215.
by tfgg 13y ago
Also, I wonder what HSR incidents he's referring to. The Spanish relatively low-speed human error crash? Systems like Japan's Shinkansen have never had a fatal accident, despite operating at the edge of technology for 50 years. I
216.
by tfgg 13y ago
I think the occasional mention of safety on high-speed rail is a bit unfair, considering that good systems like the Japanese Shinkansen have never had a fatal accident: "Risk of derailment is also not to be taken lightly, as demonstra
217.
Organ donation and A/B testing(digital.cabinetoffice.gov.uk)
3 points by tfgg 13y ago|0 comments
218.
by tfgg 13y ago
Yes it does. Gravity changes spacetime, so the locally flat spacetime at the bottom of a gravity well isn't the same as the locally flat spacetime at the top of a well, but it's still flat in both cases.
219.
by tfgg 13y ago
It's actually vx^2 + vy^2 + vz^2 - vt^2 the minus sign in front of the vt is very important and gives the SR (hyperbolic) structure of flat spacetime. The rotating a vector thing is just an analogy to euclidean space rotations.
220.
by tfgg 13y ago
Back in my day if you were at highschool and wanted attention from Valve you created a mod played by thousands of people! Joking, of course, this is cool. I wonder how they'll recruit, whether it'll be from pre-existing modding co
221.
by tfgg 13y ago
It seems a bit unfair to claim that it's because she's a woman -- how many women work for Valve? Also, Valve, being a game company, has always had a diverse set of skills with artists and software engineers being the most obviousl
222.
by tfgg 13y ago
She was short of people inside the company who wanted to do the job. Of course you can always find people outside the company who want in (it's a job, after all). In the case of hiring people specifically for someone's project, pr
223.
by tfgg 13y ago
Was Valve ever "structureless"? My impression from reading the handbook was that power structures were recognised but not enforced, i.e. if you wanted someone on your project, you had to persuade them. This is not great if you can
224.
by tfgg 13y ago
Perhaps the government knew it was flawed and wanted to encourage him by making him feel persecuted?
225.
by tfgg 13y ago
Don't use template letters -- put your thoughts in your own words. MPs/their staff tend to weight template letters lower as they indicate less effort and thought, and writetothem blocks them if it detects them.
226.
by tfgg 13y ago
I don't know what university you went to, but it definitely was on my course. Second or third year. The idea that you wouldn't cover relativistic QM in undergrad physics is pretty absurd, and probably indicative of how shallow Ame
227.
by tfgg 13y ago
What does "in origin circle" in the challenges mean? I drew a triangle inside a circle and it didn't seem to recognise it.
228.
by tfgg 13y ago
I think it's possible, it'd just take serious computing power. There are a number of physically guaranteed symmetries which would be silly to make a machine learn: a) Permutation symmetry of identical atoms b) Rotational symmetry of system
229.
by tfgg 13y ago
People have tried applying machine learning to learning many-body potentials in physics for use in speeding up quantum molecular dynamics while maintaining most of the accuracy. What you'd do is say that the total energy of the system is a