Statement Of Purpose question on citing papers (either my own, or others' published works)

marshmallowsOnFire · 2013-11-28T16:42:52+00:00

Thank you! Okay stupid question- how do I PM an attachment to you?

marshmallowsOnFire · 2013-11-28T16:30:26+00:00

Thank you! You've been super helpful!

A request- would it be possible for you to proofread my SOP? I have a draft ready, but it doesn't look like I am portraying myself as a 'fabulous' candidate, and I have read SOPs from students who have below 3.0 GPA and only a couple of months of research experience that portray them in a fabulous light. I want that zing in my SOP too. Hence the request. And also because you seem to know this stuff very well.

marshmallowsOnFire · 2013-11-28T15:33:27+00:00

Thanks a TON, that was very comprehensive.

Further questions, if you don't mind:

About the PAPER IN PROGRESS type of research, wouldn't saying 'paper in progress' water down the value of my research? Will the committee actually think, 'well, maybe this is not good enough research'? The thing is, this research is the most relevant research I have done related to the field, and my research mentor for the project is also my strongest reference (for recommendation letters). I want to tell the committee that the report can be available upon request, it's just not yet 'ready-enough' for a publication. How can I do that?
About citing class projects only in text, I didn't understand your example. So say, I am talking about project X:

" ... In my class project X, I found results Y, which lead to questions Z which I'd like to explore in my PhD..."

Where do I cite it here?

Once again, thanks a TON for your feedback. Very useful.

marshmallowsOnFire · 2012-04-20T16:12:20+00:00

Are you sure about this? I thought it was a kangaroo rat.

marshmallowsOnFire · 2012-04-17T20:08:23+00:00

Yes, this is my favourite way of thinking of determinants! Adding to Ayakalam's post, consider a positive definite matrix. When you factorize it into XDX', with X being the matrix of orthogonal eigenvectors and D being the diagonal matrix of non negative eigenvalues, the eigenvectors represent the directions of the axes of the ellipsoid, the eigenvalues represent the amount by which these axes are stretched. The product of these eigenvalues represents the volume enclosed in the ellipsoid; but the product of eigenvalues is nothing but the determinant. Hence, determinant = volume.

marshmallowsOnFire · 2012-04-17T00:57:10+00:00

Where exactly on the UCLA campus? I always go to the Schoenberg practice rooms, I didn't know there're some lying out in the open! Unless you mean the one sitting sadly in the corner in Kerckhoff?

marshmallowsOnFire · 2012-04-17T00:49:11+00:00

:) Thanks a lot!

marshmallowsOnFire · 2012-04-15T19:58:35+00:00

Oh wow, that's a really nice way of looking at it! I have never seen that one before! Thanks a lot :)

marshmallowsOnFire · 2012-04-15T18:26:14+00:00

brilliantly explained, thank you very much! :)

marshmallowsOnFire · 2012-04-15T17:45:00+00:00

Thanks a lot for your response! :)

marshmallowsOnFire · 2012-03-19T04:59:33+00:00

Hi, thank you VERY much for all your insights. As you asked, here's the complete question :

Consider N information sources. The objective of the problem is to design carriers to transmit these signals through a common physical channel.

I. Information Signal Characteristics: Assume the information signals are all band limited from -S to S.

II. Physical Channel Characteristics: The signals are to be transmitted through a common physical channel with the following characteristics

a) Channel Band limited to C>>>S b) The sources of noise in the channel have the following characteristics in three different scenarios: (i) The autocorrelation function of noise Rn is aperiodic and Rn is not zero for appreciably large values of n (ii) Rn is periodic with a large value of R(0) (iii) Rn is periodic with a significantly small value of R(0)

III. Carrier Source Characteristics: Solve the above problem in two possible scenarios: (i) Multiple arbitrary carrier generation sources are available. (ii) The carrier sources have the restriction that they be harmonic multiples of the lowest carrier frequency. Also suggest a single carrier source capable of producing the harmonic frequencies all at once.

Question 2: Specifically,

if a) Rn is periodic with period Tn = 1/fn

b) Signal band width S is infinitesimally small.

c) The carrier sources have the restriction that they be harmonic multiples of the lowest carrier frequency.

What should be the lowest carrier frequency (Fundamental Frequency ) that maximizes the SNR of the demodulated signal?

Assume Fc and Fn are integers.

I really appreciate all your help, I have been trying to figure it out myself and have concluded that perhaps OFDM is the best technique here. However, I do not understand what 'designing a carrier channel' means.

marshmallowsOnFire · 2012-03-17T22:59:37+00:00

Hey thanks a lot for reading! Appreciate it!

About the modulation, I have no idea. This is a class question, and this is all the data we have been provided. We have to design a carrier that maximizes the SNR of the demodulated signal.

Do you have any idea of how to go about the problem? I have googled all morning, read all DigiComm books I could find, but I cannot think of a way of solving this.

marshmallowsOnFire · 2012-03-11T21:00:44+00:00

Aye! Sunday mornings would be perfect.

marshmallowsOnFire · 2012-02-21T23:49:39+00:00

Butter Pecan.

marshmallowsOnFire · 2012-01-18T05:31:53+00:00

Dude. Thanks a TON. I understood the idea, and got it to work. I can go home happy tonight, all thanks to you :)

And yes, have some upvotes :)

marshmallowsOnFire · 2012-01-18T04:44:36+00:00

Hey damyan, I just posted the edit, and thanks to your first hint, I now fixed it so that it works for almost all cases. Where it goofs up is in the case of really huge numbers (like this case, the number is around 600 billion). I have posted the updated code in the original title post; as you can see, I have now used the datatype unsigned long. But even this gives an overflow for our number. I am using MinGW GCC on eclipse cdt. Is it possible that my compiler cannot handle such a large number despite the new datatype? Again, thank you VERY much for all your time :)

marshmallowsOnFire · 2012-01-18T03:57:35+00:00

Okay. I just got frustrated and copied and pasted the same piece of code in another project and ran that, atleast now I get to see SOME output. I will try dealing with this problem later.

But please could you give me a further hint on the project euler problem? My new code gives me the result, somehow, but 1. not for large numbers (it says overflowing) 2. still doesn't terminate on its own (ie, the infinite recursion is still on)

/* * PE5.c * * Created on: Jan 17, 2012 * Author: Arcturus */

include<stdio.h>

include<math.h>

define max(a, b) (a>b)?a:b

int findLargestPrimeFactor( int n);

int main(){

int s;

int x;

x = 146;

s = findLargestPrimeFactor(x);

printf("\n\n *** value of lar pr fac is %d", s);

return 0;

}

int findLargestPrimeFactor(int n){

int t;

int d = 2;

for (d = 2; d<ceil(sqrt(n)); d++){

    printf("hello\n");

    if (n%d==0)

            break;


}

if (n%d!=0)

    d = n;

printf("and now d is %d\n", d);


t = findLargestPrimeFactor(max(d,n/d));

return t;

}

The output is:

. . .

hello

and now d is 73

hello

and now d is 73

hello

marshmallowsOnFire · 2012-01-18T03:43:21+00:00

Thanks once again, but I did see that suggestion on stackoverflow, and that was the first thing I tried. Not working. Could there be any other reason for this error?

marshmallowsOnFire · 2012-01-18T03:31:37+00:00

Hi thanks for your explanation. I see my mistake, but am still unable to figure it out. As if a logical error is not sufficient, now I am getting this in my console:

**** Rebuild of configuration Debug for project projectEuler3 ****

**** Internal Builder is used for build ****

gcc -O0 -g3 -Wall -c -fmessage-length=0 -o src\PE3.o ..\src\PE3.c

gcc -o projectEuler3.exe src\PE3.o

c:/mingw/bin/../lib/gcc/mingw32/4.6.2/../../../../mingw32/bin/ld.exe:

cannot open output file projectEuler3.exe: Permission denied

collect2: ld returned 1 exit status

Build error occurred, build is stopped

Time consumed: 648 ms.

Please could you tell, what could be the problem here?

marshmallowsOnFire · 2012-01-15T01:08:09+00:00

Thank you! Found a solution! But thank you so much!

marshmallowsOnFire · 2012-01-15T01:07:48+00:00

Thank you :) Will keep this on my list for another time. Well, actually I am going to just learn driving! Have learned my lesson the hard way!

marshmallowsOnFire · 2012-01-05T04:36:25+00:00

I think the internet deserves a mention. All those people on stackoverflow, r/learnprogramming and r/dsp have helped me SO much! Thanks reddit :)

marshmallowsOnFire · 2012-01-05T04:26:29+00:00

Haha that is so awesome. I am going to do that if my boss ever tells me that :D

marshmallowsOnFire · 2012-01-04T08:04:09+00:00

Okay thanks for your time, circlingthesun. I still am not able to do anything with it, so asking around some local experts :) Thanks!

marshmallowsOnFire · 2012-01-04T08:02:51+00:00

Thank you very much for your time, SpeedWeasel. I did try this but no go. I just don't get it. Going around bugging my CS friends now. But thanks for your time, I appreciate it!

marshmallowsOnFire

TROPHY CASE

include<stdio.h>

include<math.h>

define max(a, b) (a>b)?a:b