uvdiv

41 ms·

361.
by uvdiv 14y ago
Yes, easily. Solar escape delta-v is about 21 km/s from earth orbit (not including earth's gravity). The Jupiter Icy Moons Orbiter is designed with a delta-v twice that, 40 km/s, using nuclear-powered ion thrusters. To be used to maneuver w
362.
by uvdiv 14y ago
Text of proposed constitution, in English: http://stjornlagarad.is/other_files/stjornlagarad/Frumvarp-e...
363.
by uvdiv 14y ago
With 10^6 random numbers between 0 and 10^8 almost all operations will be splits, Right. and you'll end up with 8 bytes x 10^6 = 7.6 megabytes. Not if you encode cleverly. The successive differences will be on the scale of 10^8/10^6 = 1
364.
by uvdiv 14y ago
Yes, the other commenter ChuckMcM showed one https://news.ycombinator.com/item?id=4680259 An ordering of a storage scheme doesn't always store information. E.g. if the list is sorted, the ordering is completely determined by the data -- i
365.
by uvdiv 14y ago
You have N elements, so they have N! possible permutations. The ordering of the list is one such permutation; to describe one message out of a language of N! possible messages, it takes lg(N!) bits.
366.
by uvdiv 14y ago
They're 8-digit decimals, not 10, so it works out to 0.96 MiB. I think the parent's solution works. The typical separation between numbers is about 2^7: that works out to 8 bits per number -- 7 for the length of the '00...0', plus one lengt
367.
by uvdiv 14y ago
Information theory to the rescue! Well, not really. 8 decimal digits takes 26.6 bits. An ordered list of 10^6 of these takes 3.17 MiB. The information contained in the ordering is lg(10^6!) ~= 2.20 MiB [0]. So as an unordered multiset, th
368.
by uvdiv 14y ago
Obvious to whom? It's an ideological division whether money changes anything. The progressive left says yes, the classical liberal thinks no. An analogy is publishing for profit. Is there any discussion of "regulating" books and newspapers,
369.
by uvdiv 14y ago
Doesn't that suggest the state can ban online courses if there is profit involved? That the state's power to "protect consumers" extends as far as their exposure to pure speech? The law's intent is to protect Minnesota students from wast
370.
by uvdiv 14y ago
I will be speaking to my state legislators about this as a precaution after first speaking to the Minnesota Department of Education It's worth noting the perp is the Office of Higher Education, not the Department of Education: they are
371.
by uvdiv 14y ago
Not precisely that, but the director was the Democratic party leader in the state senate: http://en.wikipedia.org/wiki/Lawrence_Pogemiller Party aside, him being a 30-year career politician is noteworthy in itself.
372.
by uvdiv 14y ago
A bureaucracy calling itself a "Minnesota Office of Higher Education" https://www.coursera.org/about/terms https://www.ohe.state.mn.us/
373.
by uvdiv 14y ago
I'm curious, how did wikipedia get copyright over the designs of national flags? What right to they have to attribution?
374.
by uvdiv 14y ago
What were the criteria for including some disputed states (South Ossetia, Somaliland) while excluding others (Transnistria, Azawad)?
375.
by uvdiv 14y ago
Where are you getting your chances from? Is there some theoretical limit on the sensitivity of the radial velocity technique, independent of current technology? (edit): This spectrometer is supposed to be capable of detecting an earth-clone
376.
by uvdiv 14y ago
With one star, they teased out nine different planet orbits from its wobble: http://en.wikipedia.org/wiki/HD_10180
377.
Uber decides to pull the plug on its New York taxi service (arstechnica.com)
10 points by uvdiv 14y ago|1 comments
378.
by uvdiv 14y ago
HTML5 implementation in 3, 2...
379.
by uvdiv 14y ago
Here's the paper. http://arxiv.org/pdf/1210.2720.pdf It's reasoned guess. They know three things about the planet: its mass, its size (radius/volume), and its orbital distance. They also know some of the chemistry of the star it orbits. F
380.
by uvdiv 14y ago
According to the website of Hube Korea, the hydrofluoric acid was "LCD-grade", presumably used for LCD manufacturing. http://www.hube.co.kr/ (Flash website) http://imgur.com/lDeRS (screen capture) Both Samsung and LG Display have manufa
381.
South Korean chemical plant spill labelled 'special disaster zone'(blogs.nature.com)
6 points by uvdiv 14y ago|1 comments
382.
San Francisco's Car-Sharing Services Flourish Despite Regulators (nytimes.com)
2 points by uvdiv 14y ago|0 comments
383.
by uvdiv 14y ago
I tried this independently, and have the same result (2.0%). https://gist.github.com/3855660 And the probability of any rocket engine failing, per launch, is 1 in 3!
384.
First view of far side of the moon (55 years old this weekend)(nssdc.gsfc.nasa.gov)
2 points by uvdiv 14y ago|0 comments
385.
by uvdiv 14y ago
Maybe they should unionize.
386.
by uvdiv 14y ago
That's my complaint, it doesn't have much greater energy density, or more precisely it's not usefully translated to momentum. The speed target in the article is extremely low ("62,600 mph") -- only a small factor higher then what chemical
387.
by uvdiv 14y ago
The other article has a nonzero information content, for a change: http://txchnologist.com/post/32463368168/channeling-star-tre... Summary: it's nuclear pulse propulsion (riding the shock wave of a nuclear explosion). Small nuclear expl
388.
Securitized debt for high-risk high-return R&D?(blogs.reuters.com)
2 points by uvdiv 14y ago|0 comments
389.
by uvdiv 14y ago
I like the views, and I think the drawings understate them. You're on the inside of a curved surface: you can see hundreds of km in any direction, always from a high angle (no obstructions). And up to the full 4pi steradians of solid angle.
390.
by uvdiv 14y ago
I skimmed it quickly too, but I think you've misread. The "interesting" claim isn't the 3-SAT encoding; it's earlier where he claims that markets "naturally" have to solve NP-hard problems, in particular that to optimize an investment strat

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