petschge

58 ms·

571.
by petschge 8y ago
If I am not mistaken 0xAAAAAAAA5 is 45812984485 = 5 * 28297 * 323801. At least that is what factor $(echo -e "ibase=16\nAAAAAAAA5" | bc -l) claims.
572.
by petschge 8y ago
At least in German we get the first hand count within hours. If that result is close and a recount is done, we will usually get that within a day. The final result may be weeks away, but that is because legal proceedings and additional scru
573.
by petschge 8y ago
I can not speak to Lion Air, but Ethiopian Airlines has a good maintenance and training record. It is widely considered the best airline in Africa and does maintenance for a lot of other airlines on the continent.
574.
by petschge 8y ago
40 minutes at a time is enough to test it and if it works much better than skype it might be worth the money. Also video calls between two parties are unlimited and what I need most of the time.
575.
by petschge 8y ago
Have you tried zoom? It works well for the video conferencing, screen sharing and chat (to send links that are annoying to read out aloud and retype).
576.
by petschge 8y ago
You make the implicit assumption that there is no option of using less oil. And while that might be true this week, there is no reason why we can not use much less oil in a year or a decade.
577.
by petschge 8y ago
If you look at doi 10.1257/pol.20140224 you can see that the main difference in mortality is not at day one but late(er) in the first year. So likely the main difference is not due to the distinction between miscarriage and infant deat
578.
by petschge 8y ago
Given statistics that show that blue states tend to do much better on life expectancy I have the feeling that nobody wants to publish that break down as it will only result in a partisan shouting match and drown out the larger message that
579.
by petschge 8y ago
If the US has higher GDP per capita and pays more for everything per capita, then maybe the reason is not that the US is so exceptional, but that the US dollar is artificially stronger than it should be. And a reason for that might be the w
580.
by petschge 8y ago
Instead of going for complicated software solutions one could just include a physical button in the base that break the flash memory chip. Before you discard the bulb you press the button and keep your secrets. The better solution of course
581.
by petschge 8y ago
Regulatory capture and "understandings" between supervising authorities and commercial operators that boarder on corruption, unsolved waste problem, very slow ramp-ups and ramp-downs which are annoying for the grid and a lot of th
582.
by petschge 8y ago
You are of course right. The scattering conserved total energy, but not the energy of the neutron.
583.
by petschge 8y ago
The thing is that there is a rather pro-nuclear crowd on HN here that does not understand enough of the physics and the systems engineering of the large scale electrical grid that goes into making this trade-off in a rational way.
584.
by petschge 8y ago
Part of that problem is that water is actually a decent moderator and neutron reflector, so it helps a lot in keeping a chain reaction with lots of energy output going. Some of the energy also goes into splitting water into hydrogen and oxy
585.
by petschge 8y ago
It would not have holes in it. The main reason why the gamma radiation makes it through is because it never interacted with any of the lead. And even if a (unlucky) gamma photon interacts inside the lead sheet it would not do much damage th
586.
by petschge 8y ago
The logical argument is that we still do not have a good way to deal with the radioactive waste and that a lot can still go wrong in the next million years.
587.
by petschge 8y ago
Gamma radiation not so much simply makes it through everything, but it does indeed take a lot of shielding to attenuate to save level if there is enough radiation to begin with. The fact that it interacts with stuff is actually what makes i
588.
by petschge 8y ago
Boron actually mostly acts as a neutron poison, i.e. it absorbs neutrons. That way further (stimulated) decay of other nucleii that were hit by a neutron is eliminated and the chain reaction stops, reducing the production of thermal energy.
589.
by petschge 8y ago
For the Volkswagen group, I would list Bentley, Lamborghini or Bugatti as their luxury offerings. Audi is more middle class and sold in large numbers, at least in Europe.
590.
by petschge 8y ago
Litmus, a real time extension of the linux kernel allowed such partioned scheduling. The last version is based on 4.9.30 and there is not plans to maintain it. Check https://www.litmus-rt.org/ for more details.
591.
by petschge 8y ago
Freedom of expression never means that other are not free to voice their dislike of certain opinions. And while some expression is frowned upon other members of the public you are still within your legal rights to express them. The line you
592.
by petschge 8y ago
One things that has worked well for us, is to give a very explicit invitation to every new code user to question every bit of the code. If something is not obvious, ask why it is there and why it is the way it is. Once the new user understa
593.
by petschge 8y ago
This is a very important point. Your budget of "being careful" might be best spent on better software engineering. But it is also possible that you should rather spend it on other things such as better mathematical model, better i
594.
by petschge 8y ago
You are not wrong at all. And the amount of test coverage and documentation on needs depends a lot on the field, the numerical methods, the indended users, the type of the code (simulation vs analysis vs plotting) and so on. The thing where
595.
by petschge 8y ago
Right. You do not always get outcompeted. But you run the risk. And yes, having good architecture in parts you need to change often is someting that pays of. As does having tests in section of the code that is brittle, hard to reason about
596.
by petschge 8y ago
Kinetic plasma simulations in space plasma and astrophyscial scenarios. I have seen that journal and I think it is a step in the correct direction. Regarding the funding: you kind DO need that extra funding. because if you don't get fu
597.
by petschge 8y ago
Two thirds of the codes in my field are on github. And for most others you can get a copy if you ask politely by email. That said I would appreciate it if journals not only had author, title, date and affiliation in the meta data, but also
598.
by petschge 8y ago
I agree that not enough benchmarking (comparision between different codes to check that they get compatible results), verification (checking that the code produces results consistent with the underlying model) and validation (checking that
599.
by petschge 8y ago
Oh it is nothing new that HN is bashing code in science. But if anything that story is a reason for each group to build their own independent code instead of trying to enforce so much software engineering overhead until there is only one co
600.
by petschge 8y ago
There is a wide difference between code that is pretty and code that is careful and written in a way that will not lead you astray. And if you don't know or don't care to make that distinction I am not interested in your opinion.

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