What is performance: Definition and 258 Discussions

Did any of you see Saturday Night Live's season premier? :biggrin: You've probably already heard about Ashlee Simpson being exposed for the talentless fraud that she is. SNL is known for great, live musical performances, but Simpson is probably its biggest screw-up ever. Instead of...

I'm looking for either tables or graphs which show variations in moment coefficient (either about the 1/4 chord or the leading edge) as angle of attack changes. I have details for a handful of NACA standard airfoils from Anderson's Intro to Flight book, but I'm looking for more. Most of...

I,m writting code in C/C++ and when i validate my enteries(ensure they are numeric) i use !cin.good(). Also how do i clear the buffer after an invalid entry? I usually use cin.seekg(0);cin.clear(); How do they work? Is there a better way? How do i find out how much processing power and...

Hey guys, last night my computer was fine until a game froze but since it was about 2:00 AM i just did an emergency shut down and went to bed. Anyways today when i put my computer on it moved painlessly slow. When I try to use the internet it says not responding, almost none of my programs can...

Hi, I am new to this site and i have a question that has been making me thinking for ages, what factors other than different grades of fuel and oil in F1 engines increase the power, because i have found that say Honda or BAR are down on BMW and Ferrari in terms of power by up to 100HP. Thanks Max

I'm wondering what the performance differences are between using C and C++. I think that it's quite clear that large C programs will generally run faster that large C++ programs, but how much so, and what factors have what effect? For example: I would assume minimal or no effect in the...

i am designing an armor in my head (along with hundreds of other things) and i want to know specifics about cooling systems. I've decided on a coolant system pumped by feet/arm movements/etc but i need to know: how effective are such systems? specifically, how long would they last, how cold can...

Hi all, this may seem a bit martial or militaristic, but remember it's just a model for a mathematical process that I'm interested in. OK. Imagine you have a game (or fight) where 2 teams oppose each other. The exact nature of the game is not important. However, the game has several rounds...