@voretaq7 case in point about Tuesdays: yesterday I accomplished virtually nothing. Today I sped up the code I've been working on for the last month by 6-7x.
@voretaq7 they vary depending on how much we have to talk about. It's generally 20-45 minutes.
luckily the ad server team is its own meeting now. We used to be part of the Careers team meeting, and the meetings were starting to become over an hour regularly.
At $job[-1] I had 3 standing meetings on Monday, Tuesday, and Friday. I was essentially completely unproductive because all my time was spent preparing for hour-plus meetings
@voretaq7 that's okay. We're probably getting three boxes for the NY DC. Just one should be able to take the full production load, so as long as they don't all three go down, we should be alright. If the DC powers down, then it probably doesn't matter that we can't serve ads at that moment.
@voretaq7 we've been running on VM's for testing in production, but with the number of cores we need, and the amount of network traffic that's going to go through it, it just makes sense to get physical machines.
There seem to be several sets of overlapping tags - are these useful?
For example
lighter than air
ballooning
but no airship or zepppelin tags
unpowered
glider
hang-glider
so we get questions tagged
unpowered ballooning lighter-than-air.
is this desirable?
22 May 1937: After her Lockheed Electra 10E, NR16020, was repaired at Tucson, Arizona after its left engine, a Pratt and Whitney R-1430-S3H1 air-cooled 9-cylinder radial, caught fire while restarting after a fuel stop, Amelia Earhart and her Navigator, Fred Noonan, arrive at New Orleans, Louisiana. Although she is on the third leg of her […] The post 22 May 1937 appeared first on This Da…
22 May 1948: Jackie Cochran flew her green North American Aviation P-51B-15-NA Mustang, USAAF serial number 43-24760, civil registration NX23888, over a 2,000 kilometer (1,242.743 miles) closed circuit at Palm Springs, California. Her Mustang averaged 720.13 kilometers per hour (447.468 miles per hour) setting a new Fédération Aéronautique Internationale (FAI) World Speed Record for its class, …
Anybody here willing to make a "Wing Design and Aerodynamics for Dummies" recommendation for me? I'm looking for a book to learn the subject. Please keep in mind, I majored in religious history in college and the farthest I got in math was Trig.... I'm not bad at math, I just have no background in it.
"Fluid Mechanics" Kundu, Cohen. "An Introduction to Fluid Dynamics" Batchelor, "Geophysical Fluid Dynamics" Pedlosky, "Atmospheric and Ocean Fluid Dynamics" Villis, "Turbulent Flows" Pope, "Turbulence in the Atmosphere" Wyngaard , "Dynamic Meteorology" Holton, "Numerical Methods for Fluid Dynamics" Duran. And those are just the ones I can see from here
oh, how could I forget "Vectors, Tensors and the Basic Equations of Fluid Mechanics", Aris.
@Farhan I think that depends on what kind of flying you'll be doing
a test pilot should probably be very knowledgeable on aerodynamics, wheras the guy putting around in a 172 probably just needs to know some basics.
@voretaq7 I popped over to the Comms Room to see if anyone was excited about the bump in traffic SF is getting after the new Panda release. Nope, just bitterness.
@falstro Probably he forgot some aerodynamics rule.
@BretCopeland I noticed that whenever you make an entry to this room, you only start talking to @voretaq7. Are you two ... ummm ... related or ... something like that?
@JayCarr probably not. Most of those books are considered "grad" texts and you'll find them full of tensors and partial differential equations. You could probably follow some of the concepts and some of the derivations but the basic stuff isn't always explicit. Holton for example is notorious for doing things like "F=ma (1). From equation (1) it can be shown that du/dt = -1/\rho \nabla p -2\Omega \cross u +\nu\nabla^2 u + g (2)"
Wind is caused by pressure differences. Think of a balloon full of air; poke a hole in it and the air comes out. Why? Because the pressure in the balloon is higher than outside, and so to regain equal pressure, mass moves and that is the wind.
There is a bit more to this in the atmosphere as ...
I took about a 10 year break during my BS (in which I programmed, instructed and flew for an airline)
I had integral calculus in 1999 in High school
and the next real math course I took was vector calculus in 2009
followed by diffeq the next semester
before I took the vector cal class I grabbed my old calculus book and worked through it cover to cover, filled up 2 notebooks with notes and working through some of the problems
@voretaq7 I'll agree with that, mostly because polymorphic variables and certain allocatable / pointer variables when used in certain combinations expose bugs in many compilers. but its getting better!
e.g. my ingest_cm1 library does very weird and wrong things in gcc 4.7 and probably wont compile at all before 4.7, but it is right in 4.8
@ratchetfreak I don't like auto-closing actually, it could highlight paren pairs, but it was just as easy to do it the way I did it. It's not like that's actual code.
And besides, you'd have to pay me at 2-3x what I currently make to write scheme for a living
@voretaq7 Probably not. I guess that means we could learn Haskell if we wanted, I think we just preferred the idea of clojure, just incase we found some use for functional programming.
This is something we are discussing doing in our free time.
5 years of calculus, 2 years of trig, and I-don't-know-how-many years of algebra. What do I do when I need to simplify a formula? Feed it to the HP CAS and let it condense everything for me. That's Progress :-)
Are there any javascript libraries for MPI? I am new to MPI and am learning about intensive parallel processing. We have a supercomputer at school that we are using that only uses MPI and I was wondering if I could code my programs using Node.js instead of c++.
Thanks.
22 May 1968: Los Angeles Airways Flight 841, a Sikorsky S-61L, N303Y, was enroute from Disneyland, Anaheim, California, to Los Angeles international Airport (LAX). Captain John E. Dupies and First Officer Terry R. Herrington were in the cockpit, while Flight Attendant Donald P. Bergman was in the passenger cabin with twenty passengers. The flight was […] The post 22 May 1968 appeared fir…
22 May 1969, 21:30:43 UTC: Just over 100 hours after launch from Kennedy Space Center, Snoopy, the Lunar Module for the Apollo 10 mission came within 47,400 feet (14,447.5 meters) of the Lunar surface during a full dress rehearsal for the upcoming Apollo 11 landing. Mission Commander Thomas P. Stafford and Lunar Module Pilot Eugene A. Cernan […] The post 22 May 1969, 21:30:43 UTC, T + 10…
22 May 1991: After nearly 30 years in service with West Germany, the F-104 Starfighter made its last flight before retirement. The Luftwaffe was the largest single operator of the Lockheed F-104 with nearly 35% of the total worldwide production in West German service. 915 F-104F two-place trainers and F-104G fighter-bombers were built, with most […] The post 22 May 1991 appeared first on…
There seem to be several sets of overlapping tags - are these useful?
For example
lighter than air
ballooning
but no airship or zepppelin tags
unpowered
glider
hang-glider
so we get questions tagged
unpowered ballooning lighter-than-air.
is this desirable?
Wind is caused by pressure differences. Think of a balloon full of air; poke a hole in it and the air comes out. Why? Because the pressure in the balloon is higher than outside, and so to regain equal pressure, mass moves and that is the wind.
There is a bit more to this in the atmosphere as ...
Are there any javascript libraries for MPI? I am new to MPI and am learning about intensive parallel processing. We have a supercomputer at school that we are using that only uses MPI and I was wondering if I could code my programs using Node.js instead of c++.
Thanks.
The Hangar
The Hangar