rsfern

52 ms·

601.
by rsfern 6y ago
In classical thermo, entropy has units of J/K. It's the gradient of the Helmholtz free energy w.r.t. temperature (at fixed volume). I think experimentally one generally measures the heat capacity as a function of temperature, from
602.
by rsfern 6y ago
I agree with the conclusion, but daily fuel consumption isn’t the right thing to track. I think this comes out to a 17% reduction in fuel use per unit distance, which still seems quite significant, but maybe changes the trade off point a bi
603.
by rsfern 6y ago
I generally agree, but only because there’s no time for a big project like that with an infant around But not everyone uses a crib right away — we do a combination of bassinet and co-sleeping with our ~4mo. Probably time to still build that
604.
by rsfern 6y ago
I hear this personality excuse fairly often, but I think it is just deflection. These issues are not a matter of personality, they are a matter of character. Character traits like integrity, kindness, and honesty are incredibly important in
605.
by rsfern 6y ago
> finding and inoculating There’s still no vaccine, so do you really mean identifying and otherwise protecting the vulnerable group of people? Do you specifically mean variolation [0]? If so, is there evidence that would be safe and if e
606.
by rsfern 6y ago
Seriously? I wonder how you feel about “/s” and similar? There are plenty of uses of emoji that don’t add clarity, but I think it’s a bit much to say they can’t be used in a way that adds clarity at all.
607.
by rsfern 6y ago
History/preference aside, I think you’re being a bit hyperbolic regarding the cost of removing the print statement. It’s like the most trivial broken feature to fix with 2to3. I’ve definitely run into issues 2to3 couldn’t automatically
608.
by rsfern 6y ago
You seem to be quoting [0]. This isn't really my area of expertise, but the 4K referenced here seems to be the operating temperature. I imagine the thermodynamics of moving data around changes if you have room-temperature superconducti
609.
by rsfern 6y ago
> I have been seeing comments on HN(primarily antitrump folks) that they aren't going to accept election results. Citation needed, care to link to some comments making unqualified statements to this effect? I haven’t seen anything l
610.
by rsfern 6y ago
Time to first plot is still painful even in julia 1.5, sure. But after paying that startup cost, the speed boost can be transformative in terms of the flexibility and dynamism that it buys. I've been using Pluto.jl lately, and interact
611.
by rsfern 6y ago
to be fair, the Julia citation is sort of a token sentence in the discussion section. > New generation languages, interpreters and compilers, such as Rust [55], Julia [56] and LLVM [57], will create new concepts and data structures, and
612.
by rsfern 6y ago
If the walls are metal, sure, but wood or glass isn’t likely to attenuate microwaves that much. Example: WiFi signals are transmitted on a microwave frequency (at low power compared to this device), and the signal propagates through ceiling
613.
by rsfern 6y ago
That would be super interesting, but I think moderation would be really important to cultivate a real discourse instead of just endless flame wars... Maybe a good place to start would be some kind of annotation / wiki overlay for the t
614.
by rsfern 6y ago
Presumably because a ballot filled out in pencil is not immutable — the pencil marks could be erased!
615.
by rsfern 6y ago
The article says it’s a composite of two recovered strings from one of the malicious programs involved. So I wouldn’t read too much into it Edit: sorry, this article, which we on another thread https://arstechnica.com/inform
616.
by rsfern 6y ago
This comes across as kind of dismissive, as if the innovation here is just a realization that a well-known electrocatalytic reaction can be used for carbon sequestration. Am I reading your tone wrong? The really hard bit in this kind of res
617.
by rsfern 6y ago
I think this has started happening to me lately! I use pihole with the default block lists as well (in the US), which of course doesn’t get everything, but generally works pretty well. So today my wife and I were looking at dogs that need f
618.
by rsfern 6y ago
This post is also relevant: https://bkamins.github.io/julialang/2020/08/02/post_juliacon... Edit: it’s a bit more into the weeds than I thought. Honestly the docs give a better picture of DataFrames.jl
619.
by rsfern 6y ago
At least in MD ballots just need to be postmarked by Election Day to be counted. What states require ballots to arrive by Election Day? That seems like a much less transparent policy unless there are guarantees on delivery time...
620.
by rsfern 6y ago
That’s a really good point, and I agree, but any alloy used for reactor components is going to have to deal with embrittlement one way or another. At the end of the day this is just another potential tool in the alloy design toolbox, and i
621.
by rsfern 6y ago
At the end of the discussion section, there is some evidence presented that this self-healing effect occurs under neutron irradiation as well, though the exact implications for fast reactor materials seem unclear. Makes sense, the basic mec
622.
by rsfern 6y ago
Totally — there’s a NACE report [0] that estimates the cost of corrosion damage and mitigation at 3+% of the global GDP (in 2013 anyway), which is nuts to me. [0] http://impact.nace.org/economic-impact.aspx
623.
by rsfern 6y ago
One of the main points of the lockdowns were to get the infection rate down to a level where testing and tracing is tractable, not to outright eliminate the virus necessarily. It seems like most states in the US were not prepared for that w
624.
by rsfern 6y ago
20 minute power naps are awesome if you can get the timing right. I usually use an alarm, because if I nap much longer than 20 minutes then coming out of deep sleep leaves me feeling super disoriented.
625.
by rsfern 6y ago
It’s apparently a cubic polynomial fit to the logged data — see http://bactra.org/weblog/1176.html
626.
by rsfern 6y ago
Seriously? It’s not like we have the shelter in place orders just because of some media influence. These policies are driven by state governments working closely with medical and epidemiological experts. The countries that took these polici
627.
by rsfern 6y ago
The course is CMU’s 38-801 (evidence based teaching in STEM). I don’t think there is a course website, but CMU’s course design page has a pretty good overview of the material covered [0]. It was a cool project-based course that covered a lo
628.
by rsfern 6y ago
I took an evidence-based teaching course in grad school, and one of the things that really stuck with me was this idea that teaching should be continually framed around clear learning goals and a growth-oriented mindset. I think a clear val
629.
by rsfern 7y ago
But the point of everyone wearing masks in public is to keep pathogens inside of the masks of those who would be asymptomatic transmitters. The keep-pathogens-out effect is supposed to be this secondary thing, and I’m not under the impres
630.
by rsfern 7y ago
I don’t understand your second question — they printed a bunch of martensitic steel tensile specimens with a pretty common laser melting technique, then ran a bunch of mechanical testing. Where’s the lack of execution? I think the art/

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