Recent submissions

Comment · 3 years ago
That's specific power, not specific energy. Do you mean 1 kW*r/kg?
Comment · 4 years ago
I thought the same thing.
Comment · 6 years ago
They broke split screen on the switch.
Comment · 6 years ago
That's very similar to my experience.
Comment · 6 years ago
That's generally what you should do with a scientific model: state your assumptions and methodology clearly.

And most if not all scientific and engineering models spread properties across a group of objects and use averages. R_0 is an average. And it's the average behavior that matters here

In a well tested population, you might be able to focus interventions on infected people and their contacts. In the US population, the people most likely to spread the disease are those who interact most with other people. That means getting those people to reduce their interaction rate.

It's a semi-empirical model, as are many if not most models used to make decisions.

Comment · 9 years ago
You're supposed to say "kriging" at least once in this post. :P
Comment · 9 years ago
I created this entry. It's evolved considerably.

I do still recommend the original source I used: The Concise Guide to American Aircraft of World War II by David Mondey. It's great.

Comment · 9 years ago
The terms are gas giant and terrestrial (or rocky) planet. They're already there.
Comment · 9 years ago
Yes to pressure part and no to the venturi part. Well, it's not enough. You still have to generate a downdraft to conserve momentum and the venturi idea doesn't explain that.
Comment · 9 years ago
Seconded. Masters in ASE, written my own vortex lattice code from scratch.

"Wings generate lift by changing the velocity of the flow around them" seems general and correct but the why part is pretty tricky without notions of continuity and conservation laws. And vorticity helps a lot, too.

Comment · 10 years ago
In an absolute sense you're not going to prevent any deaths unless you're preventing lives. Everybody alive is going to die.

One less death relative to what?

Comment · 10 years ago
It's quadratic. Polynomial would also have been acceptable. But what they meant to say is "superlinear". Like aetherson, this drives me nuts.
Comment · 10 years ago
Including those at NASA.
Comment · 10 years ago
And as far as I can tell, organizations struggle with doing multilevel and multidisciplinary optimization.

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