What is Computing: Definition and 730 Discussions

Computing is any goal-oriented activity requiring, benefiting from, or creating computing machinery. It includes the study and experimentation of algorithmic processes and development of both hardware and software. It has scientific, engineering, mathematical, technological and social aspects. Major computing disciplines include computer engineering, computer science, cybersecurity, data science, information systems, information technology and software engineering.

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  1. S

    Seeking Help on Boolean Logic - I'm New to Computing

    To Who Ever Is Willing To Help I,m am looking for a mentor to help me understand boolean. I do not poccess any knowledge of physics as yet but have just begun a computing course for beginners and any help would be much appreciated. Yours Sincerely S. Kane
  2. P

    Question about computing torque?

    Question about computing torque?? When computing torque of a electic motor I use the formula T=IAB, where as I represents the current, A represents the area, and B represents the magnetic field. My question is, what is the meaning of the product of IA?
  3. Q

    Computing Lennard-Jones potentials for molecules

    anyone here have knowledge on computing Lennard-Jones potentials for molecules using periodic boundaries versus doing it on the 3D surface of a hypersphere?
  4. J

    Computing Expected Value of Y

    Let X be a random variable with Uniform(0,1) distribution. Let Y = X^2 + 1. Compute E[Y]. The question here is if I should compute the expected value of Y integrating from 0 to 1 for x(x^2 + 1)dx?
  5. J

    1D Diffusion Equations (Numerical Computing) [kind of long]

    I am doing research with a professor and he asked me to graph some solutions to a 1D diffusion equations of the following form: C_e \frac{\partial T_e}{\partial t}=\frac{\partial}{\partial z}\left( \kappa \frac{\partial T_e}{\partial z} \right) - g(T_e-T_i)+\alpha (1-R)If(t)\exp (-\alpha z)...
  6. S

    Top Quantum Computing Topics for Beginners | Expert Suggestions

    I am interested in quantum computing, but presently have no clue as to where should I start. Could you suggest some topics in the field for me to go ? Some simple ones that I can finish them in one year ? Could you ? Thanks a lot
  7. S

    Quantum Computing: What It Is & What It Can Do

    What is a quantum computer in short ? what does it look like ? Can it be as fast as a present super computer ? Another, beside crypto, what can quantum algorithms do ? Can they do something good like genetic algorithms ? :redface:
  8. P

    How can I plot the altitude of a capsule during re-entry?

    Hi, I need to plot as a function of time, the altitude of a capsule bringing astronauts back from space. I have all the values required in order to calultate it but I'm not sure how i plot it as a function of time? Is it simply a differential matter? Your help is much appreciated...
  9. B

    Programs Exploring Quantum Computing: Top Universities for Postgraduate Studies

    Hi Does anyone know which universities in england and US do post graduate study in Quantum Computing? Raj
  10. H

    Computing Statistical Distributions: A Practical Guide

    How does one go about actually computing various statistical tables, rather than looking them up? Things of interest at the moment are the cumulative distributions and their inverses, for the standard normal and both central and noncentral chi squares.
  11. M

    Computing Integrals: From 3 to 11 - Prove You Are Right

    I was having trouble starting up this question. Let ------| 2, if x<6 f(x) ={ 7, if x=6 ------|-3, if x>6. Compute (the integral from 3 to 11) f and prove that your right. The problem i was having was choosing a partition for this integral. For example, [3,x,y,11], what type of...
  12. L

    Building the World's First Quantum Computer: Challenges & Ideas

    I have read with interest the previous post on this topic, but wonder, I recently read an article about the first quantum transistor, a small step on the path to a true quantum computer, and also some articles on using argon atoms and electrons as ram and a bus respectively; can anyone however...
  13. cronxeh

    Is Scientific Computing by Heath Worthwhile for Engineers?

    I'm wondering whether I should enroll in this course. This is the book they use: Did anyone ever use this book? If so let me know if there's anything worthy in it for engineers
  14. C

    Can Black Holes Compute Universes?

    Computing By A Black Hole!? I have recently read the november edition of Scientific American. The article says that everything computes. Bits like momentum ,angular momentum exchange when particles interact with each other. But how does it encode matters as quantum mechanics effect exists?I...
  15. C

    Optical Computing: Exploring the Possibilities

    People seem very quick to proclaim Quantum Computing as the solution to faster computers, however the development of Optical Computers rarely rate a mention. The motivation behind this thread is to give some awareness as to what optical computing is and what it is capable of and hopefully invite...
  16. B

    Estimating f(x) & Computing dy/dx: Answers vs. Solutions

    1) Use differentials to estimate f(8.05) given that f(8)=71 and (d/dx)f(x)=sqrt of (x+56) i used f(c+h) = f(c) + fprime(c) * h i got 8.125, but the answer is 71.40 2) Compute dy/dx at the given values xy - 6y^2 - 2x = -24 , x=1, y=2 I keep getting 4/25 but the answer is 0 3) Give...
  17. marcus

    Spin networks and quantum computing (curious link-up)

    this seems strange spin networks are the quantum states of gravity in one approach to it (LQG) this paper treats them as quantum computers I cannot tell if ...I can't tell anything about this. some remarkable diagrams way at the end, and nice numbers like the Catalan numbers...
  18. B

    What are the main algorithms used in quantum computing?

    I've been asked to take part in a project invloving reasearch into Q.C I've basically got to investigate algorithms and i was wondering which are the main algorithms that have been devloped? So far I have Shor's factoring, Grover's searching and Discrete Logarithm algorithms.. Are there any...
  19. A

    How much work is required to drink through a straw placed in a glass of water?

    Can someone tell me what I am doing wrong? "A glass is a cylinder, 15cm tall and with a radius of 3cm. It is filled 12.5cm high with water d=1000kg/m^3. A straw is placed in the glass, with the top of the straw 5cm above the top of the glass. How much work does it take to drink through the...
  20. C

    Computing the Limit of tan(pi/n)/(n*sin^2(2/n)) as n Approaches Infinity

    Hi I'm having trouble computing this limit lim n-> infinity tan(pi/n)/(n*sin^2(2/n)) Any hints would be great
  21. D

    Computing Distances: Evaluating Sums in Polynomials

    Hi, I would appreciate if you could point me some resources that you have seen and think could be related to the following problem: Given are the values of two polynomials Y(x) and Q(x) in n consecutive points (x0, x1,…, xn-1): (y0, y1,…,yn-1) and (q0, q1,…,qn-1) respectively. We would like...
  22. B

    Empirical Computing: Unlocking Limitless Calculation Speed

    We know the basic principles behind many systems which are nevertheless too complicated to calculate accurately--turbulent flow, for example. The number of calculations required to precisely model turbulent flow is enormous, but it happens in nature and can be empirically observed. What would...
  23. A

    Computing Gravity: Formula for Average Acceleration

    I'm attempting to make a program which simulates the gravity of bodies in space. However, I've run into a problem: The program takes the acceleration/speed/position at a certain time and calculates the new values a (small value of time) later. However, this doesn't work because when two...
  24. M

    Major for Quantum Computing

    What is the best major for someone who wants to get into the field of quantum computing research? Right now I'm a sophmore doing Electrical Engineering with a minor in Computer Science. Is this the right path? Do I need to specialize in a master's degree program or somthing of the sort...
  25. C

    Quantum Computing and Entanglement

    This is probably not the best site to get scientific information from, but still: http://computer.howstuffworks.com/quantum-computer1.htm I don't understand the final bit - how does entanglement allow scientists to know the value of the qubits? I can understand how it could allow them to...
  26. D

    EMachines M6809 - Unbeatable Price for 64-bit Computing

    http://emachines.com/products/products.html?prod=eMachines_M6809 . What a deal. It's closest competitors from Alienware and Falcon are a lot more expensive. I showed this laptop in the Off-topic section of a Mac forum and someone replied, "It'll be five years before Apple can ever price...
  27. B

    Distributed Computing Apps: Our Members' Favourites

    Do any of our members use any distributed computing apps? If so, what do you use, and for what reason? What are your favourites? I ran SETI@home (like almost everyone else on earth, I think. ;) ) for quite a while, achieving 221 data units in 7,000 hours. But recently I've switched to...
  28. C

    Optical Computing Resources & Info - Claude's Search

    Does anyone know any good websites/resources etc to do with optical computing? I have found some good websites and papers, but the more the better. Some technical information is preferred but anything to do with optical computing I would find useful. Some topics in particular I am looking...
  29. A

    C/C++ Computing ln(x) with C++ Iterations

    I was fiddling around with C++ and iterations and I found an algorithm for computing ln(x). n = any number, the higher, the better the approximation ln_x = 0; divisor = 10^n; while ( divisor <= x*10^n ) // Where x is the ln(x) you want to find. { ln_x += 1 / divisor...
  30. K

    What does the g stand for when computing moment of inertia

    What does the "g" stand for when computing moment of inertia What does the "g" stand for when computing moment of inertia, does it stand for gravity 9.80 m/s^2 or what. Thanks.
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