Code Definition and 960 Threads

In communications and information processing, code is a system of rules to convert information—such as a letter, word, sound, image, or gesture—into another form, sometimes shortened or secret, for communication through a communication channel or storage in a storage medium. An early example is an invention of language, which enabled a person, through speech, to communicate what they thought, saw, heard, or felt to others. But speech limits the range of communication to the distance a voice can carry and limits the audience to those present when the speech is uttered. The invention of writing, which converted spoken language into visual symbols, extended the range of communication across space and time.
The process of encoding converts information from a source into symbols for communication or storage. Decoding is the reverse process, converting code symbols back into a form that the recipient understands, such as English or/and Spanish.
One reason for coding is to enable communication in places where ordinary plain language, spoken or written, is difficult or impossible. For example, semaphore, where the configuration of flags held by a signaler or the arms of a semaphore tower encodes parts of the message, typically individual letters, and numbers. Another person standing a great distance away can interpret the flags and reproduce the words sent.

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  1. Orion1

    Mathematica How Can You Extract Numerical Values from Output Box Data in Mathematica?

    \text{In}[1]:=\text{Solve}\left[\partial _{\theta } \text{Sin}[\theta ]==0,\theta \right] \text{Out}[1]:=\left\{\left\{\theta \to -\frac{\pi }{2}\right\},\left\{\theta \to \frac{\pi }{2}\right\}\right\} Is there a Mathematica source code command that can read a specific numerical value...
  2. B

    Seeking Computer Vision Source Code for Texture Analysis

    Dear All, I am working on digital image processing. I want to do texture analysis. I need computer vision source code. I could not find the source code. If you have these source code please share me.
  3. Z

    MATLAB Need help to solve of Matlab code

    When a resistor (R), capacitor (C) and battery (V) are connected in series, a charge Q builds up on the capacitor according to the formula Q(t) = CV(1 − e−t/RC) if there is no charge on the capacitor at time t =0. The problem is to monitor the charge on the capacitor every 0.1 seconds in...
  4. N

    Solving G95 Coarray Test Code Compile Error

    Hi all, I am having difficulty compiling the following code in g95, which is supposed to handle coarrays... The code is: ! PROGRAM test implicit none INTEGER :: a INTEGER :: m, i IF ( THIS_IMAGE() == 1 ) THEN READ(*,*) m DO i = 1,NUM_IMAGES() a[i] = m END DO END...
  5. A

    How can I create realistic gravity code for my video game?

    Hello! I am a programmer and I am working on a video game, up until now I have used "gravity" to make objects fall just based off simple positioning code. I want to create realistic gravity code though! Here is how the code works... You simply create a variable and assign it a value.. ex...
  6. Orion1

    Mathematica How Can Mathematica Extract and Reuse Output Values for Further Computations?

    \text{In}[1]:=\text{Solve}\left[\partial _{\theta } \text{Sin}[\theta ]==0,\theta \right] \text{Out}[1]:=\left\{\left\{\theta \to -\frac{\pi }{2}\right\},\left\{\theta \to \frac{\pi }{2}\right\}\right\} Is there a Mathematica source code command that can read a specific numerical value from...
  7. V

    Troubleshooting Verilog Code on FPGA Boards

    Verilog Code Help [closed] Sorry to bother anyone but I figured it out on my own.
  8. S

    How can I efficiently store and access previous values in a MATLAB code?

    Homework Statement I have a problem storing values in an array in Matlab. If i want to return values according to the formula: A(v,u)=v u^2-A(v-1,u-1) where v is the row number and u is the coloumn number. So, we need to know the previous elements in the matrix to calculate the next...
  9. B

    MATLAB, help debugging my code.

    I'm asked to create a function that accepts any number of inputs, then computes the sum of all the arguments. I am asked to test the function using the four arrays, a,b,c,d defined in the calling program. Here is my code: When I run this, I get these errors: ? In an assignment A(I) =...
  10. J

    MATLAB How to code an fprintf if I am printing a value

    ok I know how to code an fprintf if I am printing a value, but I want to make a "title" print for example. Mass Time Error fprintf values here. ... ... .... fprintf values here... ...
  11. G

    LaTeX Printing Latex Code from University Computers

    Not sure where to post this. I'm trying to write my dissertation, and both the examiners and I would prefer it if I used latex for the required notation. The frustrating thing is that even though I do know how to produce latex code, I don't know how to save it into a format that the computer...
  12. Simfish

    MATLAB Matlab R2011a's new feature: portable C/C++ code directly from MATLAB

    Matlab R2011a's new feature: "portable C/C++ code directly from MATLAB" Does anyone have more information about it? Does this mean that we could write most of our C code using MATLAB first, and then run the MATLAB coder? (C is important for speed, but MATLAB makes displaying output and...
  13. J

    Effective Error Correction Codes for Noisy Channels in FPGA-ARM Interfaces

    I'm designing an interface between an ARM-CPU and a FPGA and have a pretty noisy channel between them. So I was wondering if anyone have any tip of error correction code on the FPGA side except the Hamming method I am using right now. What I want is a method which can correct if the...
  14. P

    Comp Sci JavaScript Problem: Code Access Between Frames

    Homework Statement I'm required to make a page that has the following format: Left Frame Items with prices and check boxes next to them An "Update Order" button at the bottom so the order details on the Right Frame can be updated. Right Frame A "receipt" form with all the...
  15. PainterGuy

    Once can test the code in DOS too?

    hello nice people, some guy was saying something that one can check his code in dos also. the instructor said yes. i didnt understand it. it will mean that you can test the code even without compiler. i didnt understand the whole story so i hope you can fill in the gaps. any ideas what they...
  16. Femme_physics

    How come we haven't advanced since binary code?

    This may sound like a stupid question, but binary code seems so "simple", but it's been with us since the 1940's. What'd be wrong with tertiary code, say?
  17. Demon117

    This code keep giving me 0 for mode

    This is the code I have: #include <iostream> #include <cstring> using namespace std; template <class X> X mode(X *data, int size) { register int t, w; X md, oldmd; int count, oldcount; oldmd = 0; oldcount = 0; for(t=0; t<size; t++) { md = data[t]; count =...
  18. X

    How to Adapt This Gaussian Elimination Code for a 17x17 Matrix?

    I have this code for a Gaussian Elimination: As you can see, the input is A and b. I'm trying to figure out how I can make this code work for this Gaussian Elimination: http://img189.imageshack.us/f/50468910.png/ It's 17 rows. The code can do 17 rows. But some of the equations aren't in the...
  19. J

    C code, converting float into integer

    Hi guys, i am using the C language and have created the following function: void counter (double c) { FILE *fp; char output[]="output.xls"; int n,p=0; int r=0; int i,j; float x=0; fp=fopen(output,"w"); fprintf(fp,"rmax\tnumber of particles within rmax\r\r\n"); for(n=1;n<=10;n++)...
  20. K

    Matlab code for solving complex numbers

    Hi All, I have been trying to solve a complex number equation for character impedance with MATLAB but it continues to tell me that "indexing must appear last on index addressing". I am new to MATLAB so I think that my code is wrong. What I am using is complex sqrt (R+jwL)(G+jwC)...
  21. C

    Hi,I want to know about SIMULATE code. how can I get its

    Hi, I want to know about SIMULATE code. how can I get its manual? thanks alot
  22. FeDeX_LaTeX

    Morse Code: Practical Uses & Benefits?

    Hello; I am sorry I didn't know where to create this thread, it isn't really academic or career guidance... I know morse code, I can get every letter if played slowly (I can't decipher it when played at a quick rate). I have known how to 'speak' morse code for about a year or so now, but...
  23. G

    How Do You Modify a Key in a Min-Heap to Maintain Heap Properties?

    Homework Statement Let A be a min-heap. The operation HEAP-MODIFY(A, i, k) changes the key in the node i to a new value k, then rearranges the elements in a min-heap. Give an implementation of the HEAPMODIFY that runs in O(lgn) time for an n-element min-heap. Homework Equations The Attempt at...
  24. E

    Mathematica Error in Code: Investigating Possible Solutions

    Hi, I have the following code: For[SNRdB = 0, SNRdB <= 30, SNRdB = SNRdB + 1, SNR = 10^(SNRdB/10); y = FindRoot[ ExpIntegralE[0, x/SNR] - ExpIntegralE[1, x/SNR] == SNR, {x, 0.5}]; R = N[1/SNR*NIntegrate[Log[2, q/y]*Exp[-q/SNR], {q, y, Infinity}]]] what is the error in this code...
  25. Demon117

    C/C++ What Are the Errors in This C++ Code?

    #include <iostream>; using namespace std; double w = 3.4; bool p = true; long foo(int a, int b); void goo(int &a, double b); float soo(long a, double b); bool too(double b); int boo(); int main() { int c,d; c = 4; d = c * 3; cout << foo(c,d) << endl; cout << c << " " << d <<...
  26. C

    VHDL code - write to a binary .dat file

    I'm attempting to write some simulation VHDL code that will be able to write the output of my simulation as a single string of binary values in a .dat file. So far I've used both the textio and std_logic_textio libraries to write the signals to a .txt file as text. Is there a library I can...
  27. M

    MATLAB Making MATLAB Code Efficient: A 2xN Vector

    Hi everyone, I'm trying to make my MATLAB code run as efficiently as possible. II have a 2xN vector designated like so: acc1(1,:) = A*rc(1,:); acc1(2,:) = B*rc(2,:); where A and B are scalars,. Is it possible to combine these two into a single line of code? Cheers
  28. R

    Coupled diffusion equations code

    Hi, I am trying to solve a problem using the central difference scheme in Matlab where there are two coupled diffusion equations (where both diffusion equations depend on S(i,j)). They are as follows: dS/dt = Ds * d^2S/dx^2 - VmaxS/Km+S and dP/dt = Dp * d^2P/dx^2 - VmaxS/Km+S...
  29. S

    Sentinel value how to correct my code to make it more efficient

    Hello to all I have been given a task in "C" environment ... to read a text file with a sequence of positive integers the sequence should be terminated with a sentinel value of -1 Values in text file is : 6 9 17 4 12 8 7 -1 We have to read the integers from text file, display the...
  30. L

    Is it ethical to ask for somebody else's research code?

    Hi all, This is my first post here. I had a hard time determining the correct subforum to ask this question, as this is not a technical issue, and is closer to academic problem. Having read the subforum guidelines, this post doesn't seem to suit the subforum's purpose, but let alone other...
  31. T

    What is the mathematical approach to solving letter/digit code puzzles?

    Homework Statement I was flicking through the newspaper the other day and noticed there is a type of puzzle where words are added together to form a sum. Each letter represents one of the digits 0-9, for example: FUN +JOKE =HAHA and the aim of the puzzle is to find which...
  32. M

    Solving equation system, need to augment my code

    Hello, friends. I just registered because I desperately need some help. Homework Statement For my bachelor's degree in physics, I'm trying to simulate gravitational microlensing of a background source on a system of objects, acting as gravitational lenses. I have the equation up and running...
  33. G

    U.S. Tax Code probability homework

    Hello All, I am new to these forums and hope someone may help me out. I am doing an assignment and am stuck on one of the questions. There is a sample of 1000 people of different age groups. 18-24, 25-34, 35-44, 45-54, 55-64, 65 or older People were asked if they thought the new tax...
  34. S

    C/C++ Is there an efficient way to find divisors of large numbers using C++?

    As I saw in wolfram website and in pari , if given divisors(x) , it will give all the divisors of x in a row. ex: divisors (34567) = { 1, 13, 2659, 34567 } So I we know some x = 2^5 * 5^15 * 21^5 * 119 , Here we even know the prime factors Then, Is there any program in c language (or) any...
  35. P

    MATLAB Access Variable in MATLAB Structure Using User Input

    Hi I am trying to use MATLAB for some data analysis. I start by getting user input for a variable called exptno, Then I want to access a location in a structure, but to do this I need to append the variable exptno to the name of the structure. Ill try and give an example to hopefully make it...
  36. X

    Some help with MIPS assembly code

    Hey guys. I'm trying to practice some basic MIPS, but I can't seem to get this right. You just plug in the number and then you follow the code and you'll get obviously the end result. I can't get the result for these here. Does anybody know? I'd really appreciate help. Thank you! 1. $t0 =...
  37. S

    Silvaco Software code or script

    Hi all, I am doing a project that needs me to design a PMOS transistor with a channel length of 65 nanometers using Silvaco TCAD tools. As you may know, there are examples provided in the software that I am using to customize in order to get the required channel length. So, I have to modify...
  38. J

    Can execution time of this C code be reduced?

    Hi. I've been working on a finite-difference problem in differential equations. I was wondering if this code can be further optimized, perhaps eliminate some if statements or assignment statements. That is, what is the most efficient way to code this or is it already written in the most...
  39. D

    Python Why won't this python code work?

    lists = [(2 * i + 1) for i in range(100)] i = 0 while (i < 100): if(lists[i] == 3): lists.remove(lists[i]) i = i + 1 print lists It is giving me an error about the index being out of range. I am new to python and I am not understanding this error. Edit: Fixed it. This is by...
  40. C

    MATLAB Transfer fourier series into matlab code.

    Hey guys, i need to transfer Fourier series equation into MATLAB code. Anyone can help me in transfering?
  41. E

    PIC Code Uncertainty: Why Does Placement Matter?

    Hi, I have just managed to make a PIC light blink. My question has to do with the syntax. In my code, I use a Delay subroutine that is called in between turning the LED on and turning it off. I tried two codes. The first had my Delay subroutine being placed before my main code. The second had...
  42. F

    Romberg integration fortran code

    how to code it?...sequence? logic?..
  43. B

    LaTeX LaTeX Code Distorsion in Forum Edit Mode

    Hi. When I write my LaTeX code in this forum, it appears completely distorsionated when I click "Preview Changes" in edit mode. For example: n^2(\rho) = n^2_0\left(1-\alpha^2\rho^2)\right) is shown as a "z" if previously I wrote z. In fact, I don't know if this post will be shown well...
  44. H

    Check math in code for em-force on moving particle due to finite straight wire

    please check math in code for em-force on moving particle due to finite straight wire could someone pretty please make sure I'm doing the calculations correctly? this is for a computer simulation of charged particles in an electromagnetic field. it's to calculate the electro-static and...
  45. C

    C/C++ Solving Prime Number Code Error in C++

    I was writing a program to find if a given number is prime or not. I can't figure out what the error is. /* To check if a number is prime*/ #include <iostream> #include <cmath> using namespace std; int main() { float a; int p,i,f=0; p=sqrt(a); if(a %...
  46. S

    Requesting permission to post the code

    I have written a C code program for factorization of a given number into two divisors, when the two divisors are having approximately the same number of digits . It cannot check for prime numbers. With my code limit I can check it only upto 14 digits using long long int. It is working...
  47. B

    Matlab Code Help - Gaussian Function

    -------------------------------------------------------------------------------- Hello, I am new to this forum so please kindly let me know if my question needs to be posted in another area. I am trying to write a MATLAB code to show a chirped Gaussian function and I am having some...
  48. B

    Matlab code help - Gaussian Function

    Hello, I am new to this forum so please kindly let me know if my question needs to be posted in another area. I am trying to write a MATLAB code to show a chirped Gaussian function and I am having some trouble with it. I am trying to obtain a chirped Gaussian pulse by modulating a chirped...
  49. G

    Packaged software for alloys, pwscf code (quantum espresso)

    Hello all, i need a packaged software for electronic band structure of alloys (semiconductors alloys) using pwscf code, quantum espresso. thanks
  50. P

    Fortran Code for Solving Linear System w/ Least Square Method

    Dear all: For a standard linear system, y(n*1)=A(n*n)x(n*1) If y is exact and A is well-conditioned, it is easy to calculate x. However, if y has some disturbances or some errors, at the same time, A matrix is ill-conditioned. It is difficult to accurately obtain vector x...
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