30thElement

18 ms·

31.
by 30thElement 13y ago
Considering any low-latency firm worth talking about will be able to afford viewing the full order book (which apparently you can get for $750 a month http://www.nyxdata.com/arcabook ) they don't need to create and with
32.
by 30thElement 13y ago
How many times does someone need to explain that enforcing fixed-interval ticks is a bad idea for people to stop bringing it up on HN? In the current environment, you own shares of MidCap Inc. They release a really bad earnings report, the
33.
by 30thElement 13y ago
There's 2 reasons on top of the generic problems with vertical integration, at least that I know of. First, once an independent dealership opens, they're gonna forever be afraid that the manufacturer is going to cut off their supp
34.
by 30thElement 13y ago
Turbulent flow would increase the overall drag in this situation. You're essentially taking energy from the free-flowing middle of the pipe and using it to drag more air along the wall. The reason why turbulence helps a golf ball is be
35.
by 30thElement 13y ago
+ has problems as string concatenation, but that doesn't make & a good choice. We still use a lot of C-ism's because people are used to them, and any deviations from C-like behavior, which at this point could be called "c
36.
by 30thElement 13y ago
No, it's not, that's the point. Unless you find some way to fly without creating pressure differentials, a plane with wings that are miles wide, or a usable description of airflow transitioning from subsonic to supersonic, you are
37.
by 30thElement 13y ago
In general, you don't want to fly in the transsonic zone (Mach 0.8 to Mach 1). The flow over parts of the wing goes supersonic, and while aero engineers can deal with supersonic and subsonic flows separately, we can't really deal
38.
by 30thElement 13y ago
Unless you're telling me the text message, minutes, and data usage numbers on my bill are all made up, I'm pretty sure the carriers have a way to track whose phone belongs to who. Or, if they can't provide a working opt-out, it should be op
39.
by 30thElement 13y ago
It's a holdover from Fortran (and probably from before that). Whereas modern day we would define functions as int foo(int i, int j) {...} in Fortran you would do (! is comment) function foo(i, j) integer :: foo !return
40.
by 30thElement 13y ago
Shadowing keywords is perfectly valid, although I believe you can't shadow keywords in standard headers so that compiler writers don't need to worry about it. It gives rise to some "useful" C/C++ features that should never be used, like if
41.
by 30thElement 13y ago
There are some hedge funds that invest in startups, along with the investment arm of other companies (Microsoft bought 1.6% of Facebook pre-IPO), but I don't know if it'll work for mutual funds. Hedge funds and companies can sit on a startu
42.
by 30thElement 13y ago
As someone with a degree in applied math, the pure abstract is more interesting than the applied. Applied math is like building really amazing and intricate sand castles on the beach. Pure math is like building the same sand castle, but in
43.
by 30thElement 13y ago
> The hands free display is the only advantage and it's not worth it. If there were a market for hands free displays, there's nothing stopping us from having one for our smartphones just like Bluetooth earpieces. Right, because the only
44.
by 30thElement 14y ago
Assuming Mars and the comet are perfectly round and have the same density, this comet will change the speed of Mars by about 0.004 feet per year, or about a quadrillionth of it's current speed. A body large enough and fast enough to destabi
45.
by 30thElement 14y ago
Most likely that was a mental arithmetic error or he thought that 1 bp = 0.1%, but changing it from 0.5% back to 0.05% back really changes the utility. If your average CC transaction is $100, you're breaking even compared to picking up a ni
46.
by 30thElement 14y ago
Did you continue with engineering after the freshman classes? I also went to VT, and my classes got harder every year, except for maybe senior year but then I was expected to do a senior design project on top of regular classes. But talking
47.
by 30thElement 14y ago
If you click the little "i" in the top right you can get the full methodology. In there it explains why Bloomberg the person is missing >Bloomberg News editorial policy is to not cover Bloomberg L.P. As a result Michael Bloomberg, the f
48.
by 30thElement 14y ago
There's a big difference between writing your own code just to learn how AES works and writing code and then saying "we will protect your privacy using this code". The reason experts discourage people from writing crypto code is because it'
49.
by 30thElement 14y ago
All software patents are patents on complicated math.
50.
by 30thElement 14y ago
Not necessarily. Only if you assume the people that go to movies are a good representation of people in general, which I doubt is true. Considering how important the teenage demographic is (why fewer movies are release with an R rating nowa
51.
by 30thElement 14y ago
All due to piracy? If you look at the 10 top grossing films of 2012, we have: 3 comic book movies (The Avengers, The Dark Knight Rises, and The Amazing Spiderman) where the characters have already had several movies, 3 movies that are eithe
52.
by 30thElement 14y ago
Interesting tidbit: -40 Celsius is the exact same temperature as -40 Fahrenheit. Nitpick: If you have a diesel, your car will not start at all if the engine is cold, but if you have a diesel and live anywhere where there's a risk of it bein
53.
by 30thElement 14y ago
Assuming the exhaust pipe is clear isn't the best assumption when you're in a ditch in the middle of a blizzard. Even if the pipe is clear, rust from the all the salt on the road or damage from going into the ditch could easily put a hole i
54.
by 30thElement 14y ago
Only in specific circumstances. https://en.wikipedia.org/wiki/Sovereign_immunity_in_the_Unit...
55.
by 30thElement 15y ago
Not quite, the cost of RSA encryption is O(k^3), where k is the total number of bits, not the number of 1's. But it is cheaper to have less 1 bits, as (abusing big-O notation), the cost is more like O(3k^3-z^3), where z is the number of 0 b
56.
by 30thElement 15y ago
Not anywhere near big enough to be cryptographically secure. RSA uses 2 numbers as the public key, e and n. n should be more than 1024 bits, and it really doesn't matter how big e is. The default for e for a while (and cryptographically sec
57.
by 30thElement 15y ago
How does converting energy into mass make it "colder"? If you have 1 protons worth of energy in a volume, and you have 1 nonmoving proton in another area with the same volume, isn't there the same amount of energy in both regions? Or is it
58.
by 30thElement 15y ago
If you assume inviscid potential flow, a cylinder rotating forward will create lift. So the counter-clockwise spin on the cheap beach ball is creating lift on its right-hand side, so it curves that way. As to why a soccer ball curves the ot
59.
by 30thElement 16y ago
Yeah, the plane trip wasn't meant as an example of where schools make extra money, just an example of how donors contribute that may or may not show up in the revenue. If they donated their private jet, they also donated a fair bit of cash,
60.
by 30thElement 16y ago
Theses statistics come up several times a year, and they are always misleading. It's Hard to measure how much money a University makes on sports teams. I go to a school that has a BCS football program that makes more money then it spends (o

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