thearn4

41 ms·

421.
by thearn4 10y ago
In fact, x-plane development is going to be funded by NASA Aeronautics for the production of a number of next-gen flight demonstrators, included a supersonic low-boom demonstrator. Truss-braced wing configuration, hybrid-electric and all-el
422.
by thearn4 10y ago
Yeah I'm curious what the compliment of "fold your laundry and treat your clothes" is. Only thing we can say for sure is that it's "not fold your laundry or not treat your clothes"
423.
by thearn4 10y ago
> I really wish I could know how Carmack feels about this. That's a really good point - has he spoken at all about the direction of Oculus & HMD VR in general since the Rift was released?
424.
by thearn4 10y ago
The atmosphere of Venus, for what it is worth, is one of the most Earth-like places in the solar system. Breathable air is a lifting gas in the thick Venerian atmosphere, making floating habitats viable. Furthermore, at the altitude where t
425.
by thearn4 10y ago
Battery technology will definitely need to improve before any system is practical enough to build and add to a fleet. I think there are power system assumptions being made regarding mid to far term viability of metal air batteries. Currentl
426.
by thearn4 10y ago
Funny, Sheetz immediately comes to my mind too when I think about the topic of automation. It works a little too well!
427.
by thearn4 10y ago
I work at NASA primarily supporting our aeronautics programs, and I'm excited about all-electric and hybrid-electric civil aircraft conceptual design analysis and optimization (for both fixed-wing and rotary-wing). It's one of the
428.
by thearn4 10y ago
> Your aerospace engineers already need to pass engineering certification Generally not in the U.S., unless it's a civil or electrical engineer designing infrastructure. I say this as an aerospace engineer with a mathematics PhD onl
429.
by thearn4 10y ago
It seems clear that the American university system is fed by a largely inelastic demand and isolated from larger market forces, thanks in part to the endless spigot of federal loan money (complimented by the strong preference of employers t
430.
by thearn4 10y ago
> SLS is a stunningly overpriced rocket that Congress is forcing NASA to build to keep former shuttle contractors and NASA centers employed. Understanding this is key to understanding a key constraint on how NASA operates. 10 separate fi
431.
by thearn4 10y ago
I'm married with a 11 month old son, but definitely identify with this perspective on it. I'd never sideline my family to squeeze in an extra bit of work for the sake of work, but still strongly identify with the passion for techn
432.
by thearn4 10y ago
These are sadly quite plausible titles. Assistant Executive for the Committee on Athletic Partnerships Estimated salary: $373,727
433.
by thearn4 10y ago
Nick Trefethen's "Numerical Linear Algebra" is another great source, and a pretty standard read in an upper-level undergraduate or graduate sequence.
434.
by thearn4 10y ago
It's true that a 2D discrete FFT can also be used to produce an orthogonal expansion of an input matrix, but a truncated reconstruction using it (like a band-pass filtering) won't have the rank properties (e.g. optimal low-rank ap
435.
by thearn4 10y ago
The fact that the SVD algorithm is backwards-stable is still somehow surprising to me, despite being very familiar with the proof. Very few algorithms that produce more data than they take as input have this property.
436.
by thearn4 10y ago
Detroit or Cleveland most likely. That's been his M.O. with his incubator, Bizdom.
437.
by thearn4 10y ago
It has a weird gravity that tends to bring people back, but I agree there isn't a ton of incentive to come back or anchor here unless a great job opens up (which did so for me but ymmv). To be fair, I think that all of the rust belt ci
438.
by thearn4 10y ago
That scene from Pentagon Wars should be mandatory viewing for every student in systems engineering and project management.
439.
by thearn4 10y ago
Also: Cleveland as well. (... jokes on me, you were all going to keep away anyway)
440.
by thearn4 10y ago
Agreed. I had to take a cab from O'Hare to Skokie a few months back (because I can't expense an Uber w/the gov't travel system). Smelled like fresh urine, and the guy had no idea where he was going. I had to direct him w
441.
by thearn4 11y ago
I'm using uBlock origin and find it much better than ABP.
442.
by thearn4 11y ago
Graph centrality measures are a pretty interesting and ongoing topic of research in mathematics, yes. I'm familiar with methods based on eigenspectra of the matrix exponential (and some relevance to Krylov subspace methods), but that&#
443.
by thearn4 11y ago
My friend was killed a year before he would have received his chemistry PhD. In that case, the university decided to grant it to him posthumously as well.
444.
by thearn4 11y ago
I normally really cringe when I see "TLDR" and "ELI5" all over the comments of every post in places like reddit (where the original piece is thoughtful and well worth a full read), but I am starting to appreciate its rol
445.
by thearn4 11y ago
I'm curious, how does the cost of higher education in India compare to the U.S.?
446.
by thearn4 11y ago
The scenario that I proposed was entirely hypothetical, but I image that they are revoked in the same way that any credential is revoked: if asked to verify that an individual holds it, indicate instead that they don't. I mean, this ha
447.
by thearn4 11y ago
If graduates had the option to discharge their student loan debt in bankruptcy in exchange for revoking their degree, I wonder how many would end up taking that option.
448.
by thearn4 11y ago
FWIW I'm pretty happy at NASA GRC. If I wasn't though, Its true that I probably would have already left for Pittsburg or Chicago. I am one of those suckers that does like the midwest ultimately.
449.
by thearn4 11y ago
There is this, which is built using a raspberry pi but is also very turn-key/works right out of the box: http://www.amazon.com/Intulon-Z-Command-Controller-Z-Stick-Z...
450.
by thearn4 11y ago
Cleveland wants to become one, but it's an uphill battle.

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