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As it pertains to dailies and weeklies.

WSJ?

Financial Times?

Barron's?

etc.?

Do you feel that the quality of the WSJ has declined since it was taken over by News Corp.?

I am wondering if there are any differences in the BER performance of QPSK and 2 amplitude, non-rectangular 4-QAM, when the minimum distance between signal points is the same for each constellation. From what I read, the performance of the two are the same. The average energy per bit in each signal constellations are the same. But when I do a Monte-Carlo analysis, it turns out that 4-QAM has a slightly higher BER (by about 2dB). Each system is simulated using the same SNR/bit.

Thanks in advance,

What exactly is it and how does it relate to Bessel functions?

What is the difference between coherent and incoherent detection?

Does anyone know where I can find good online lecture notes to supplement Mathematical Methods for Physicists? Specifically notes on chapters 9,10,11,12,13 (in the sixth edition)? The book is poorly written on some subjects, and my lecturer doesn't always get his point across very well (in office hours or in lecture). Thanks.

When would you use a Laurent series to expand a complex function f(z) about a given z as opposed to just using the Taylor series expansion?

I was hoping somebody could explain this one:

solve this definite integral (show how):

∫ [d²(p(u))/du²] du from -∞ to +∞

thanks

Could somebody please prove this statement?

Σ n² where n=0 to N-1 = 1/6*[N(N-1)(2N-1)]

Thanks

I don't see the point of joint random vectors. For example, say you have two joint vectors X and Y, where X has n samples and Y has m sanmples. Wouldn't this be equivalent to saying that W has n+m elements (has all of the samples of X and Y put into one vector) Any insight would help.

What is the best drug to start taking. I want to be cool, but I don't want to risk my health or become addicted. Please help me!

Can anyone recommend a good sushi place around Dallas? I taking someone out Saturday and I would like to get some opinions. I have only been here 2 months. I already got some recommendations from friends but I would like to see if I can get some responces here.

This one should be fun:

(x + iy + 2 + 3i)

---------------------- = i + 2

(2x + 2iy - 3)

Solve for x and y.

I know that this is a might be a lot of tedious algebra, but if you are willing to write it out and explain the approach you took, I will gladly give you 10 points. Thanks

I'll put in my vote for the NFC South. NFC seems stronger overall this year.

Okay, this is a tough one:

1/√(2*π) * ∫ (z^2 * exp(-(1/2)*z^2) dz)

-∞ to +∞

This is related to probability. Why is it that the area under the curve is 1? I understand that the area under a normal distribution pdf is 1, but I don't see how multiplying it by z^2 affects it. You don't need to prove it mathematically if you can explain it intuitively.

Thanks

I hope we go atleast 5-12 this season...

Up, up, down, down, left, right, B, A, start? If you do, then I happily award you 2 points!

I can never understand what people are saying half of the time. Especially when they use words like rofl, omg, lol, etc... or use sentences like

"i ono myb cuz he doesent have to waer a license plate haha, or hes not really good q "

Can some one explain how to integrate a gaussian pdf... i.e, find the error function? Any links that might help explain would be greatly appreciated.

I have a question about a series. The first four terms are:

(3)/(1*2) - (5)/(2*3) + (7)/(3*4) - (9)/(4*5) + ......

I've been trying to figure this one out for a while now. What value does this series converge to? I know what the answer is, but I would like to know a way of solving this with out using a calculator.

What is a safest amount of moonshine to drink?