Os Definition and 132 Threads

  1. N

    C/C++ How to read a list of USB from C++ in ubuntu OS?

    I am trying to use C++ (eclipse in Ubuntu OS) to read USB connection. Usually, on the terminal window, I can use command "lsusb" to see the list. Now, I want to do the same way with C++. can anyone help? Thank you very much.
  2. C

    B What is the shape and orientation os the Higgs field?

    Greetings, Other fields are curved around particles and objects. The Higgs field permeates all of space. What is the shape of the Higgs field lines? Is it parallel lines? Or a grid of perpendicular lines? Is it curved? What is the orientation? What determined the orientation? Thanks
  3. HyperTechno

    Android Wins: Which Mobile OS is Best for You?

    I OS is the most advanced mobile OS ever created. I do think it's much capable and technically advanced than android...:wink:
  4. T

    Why do metals in metal carbonyls have 0 OS?

    That's pretty much it. Why do they have 0 Oxidation state?
  5. wabbit

    Observational difference between OS and FLRW

    Reading http://www.aei.mpg.de/~rezzolla/lnotes/mondragone/collapse.pdf The reasonning looks like it should generalize from pressureless dust to a matter-radiation mix, and presumably also works with a (small) cosmological constant thrown in, as in a Schwarzschild-de Sitter solution - is that a...
  6. Silicon Waffle

    Which OS consume least memory and HD space

    I am curious as to which OS and its siblings (e.g Linux={Fedora, Mint,...}) consume the least memory and HD space but sure are still perfectly functional after installed. Thanks a lot.
  7. Alexi-dono

    Python [python] How can I get my OS to pick this up as entropy?

    So I am going to be making some keys; and I want to make them more random... So I made this: #I know that the code is pretty crude, but it works. #P.S. it is an infinite loop, run at your own risk import random from random import randint import string import time x=1 n=randint(5,90)...
  8. M

    Does a kernel-free OS make any sense?

    I've got this vague idea for a kernel-free OS that consists of an interrupt handler, a memory manager, a hardware prober and some other utilities. The hardware prober would be used to modify application source code upon install in order to configure the applications to access that specific...
  9. D

    OS question - Mac, Windows or both?

    Hello community, I am doing research on building a computer for my son who is devoted to physics and math and wants to put together a desktop system that will last into grad school. Do we need to make allowances for using more than one operating system to allow for software compatibility...
  10. S

    Will objective-c (for OS X and IOS apps) be hard to learn?

    A friend i know is taking a course on IOS/OS X programming with objective-c, and i thought i might want to learn it too. I already know the very basics of programming, a bit of python and javascript, so i know what things like lists, strings, integers,booleans, floats, loops, functions and...
  11. W

    Calculators Microsoft OS Updates and Need for Anti-Virus Protection

    Hi all, Do the changes/updates that Microsoft does periodically lower the odds of a virus successfully hurting the system? My knowledge of programming and of computers is limited, but it would seem viruses would have to be designed around the way the OS is setup. Then it would seem that a virus...
  12. E

    Finding the Right OS for a PhD Student: Making the Best Choice

    Hi all, I am currently a electrical engineering PhD student, and I spend a huge amount of my time on a computer and I plan to do so in the future as well. So, I thought it is wise to look around for another OS to use besides Windows 8, which is tolerable and works but I can't help but think...
  13. V

    What's the Best Open Source OS for GUI Lovers?

    Any favorites guys? And have you developed any source code personally?
  14. I

    Using a USB HDD to Boot an OS: Advice Needed

    I would like to buy a USB HDD, e.g http://www.bestbuy.com/site/Transcend---StoreJet-Rugged-Series-25H3P-1TB-External-USB-3.0/2.0-Portable-Hard-Drive---Purple/Black/3930191.p?id=1218443230635&skuId=3930191 but my experience with USB HDD is limited after one USB HDD (LogicGate) of mine failed to...
  15. M

    Can I load my entire OS into the RAM? If so, how?

    The DDR3 1333 is relatively cheap, so I'm thinking about buying a server mobo that can stock up to 64 GB of RAM (2^64 enables that many address lines, I suppose?) Then I can pre-load the entire windows into the RAM, so : Advantages: super-groovy and sweet just to think about lightning fast...
  16. K

    Should I install my OS on a low-capacity SSD?

    I'm putting together a new high-performance gaming rig and wanted to ask someone here if they could recommend a fast SATA III low-capacity solid state drive to install Windows 8 on. Boot times should be dramatically faster compared to an HDD.
  17. N

    How can I install Mac OS X on my Dell PC with Windows 8?

    I am Currently using Dell Inspiron(i5 & 4GB RAM) with dual Windows 7 and Windows 8. This time I got comfortable with Windows 8 so I want to install Mac OS X on it. How can do that.
  18. A

    Assembly Language Programming under Mac OS X

    I want to start with assembly language programming after some years with C, cause I think it's a good way to learn how a computer actually works. But how I can compile assembly code under Mac OS X? I went to a library, and I had found out that many books are outdated, and no book covers...
  19. J

    Creating an OS: Understanding the Basics of Programming and Text Editors

    I am afraid this is going to be a very stupid question but nonetheless i am asking: - I have been programming for 6 months now and i always program on a text editor. I learned that an OS is also a program which is first loaded onto the computer. Also the text editors are also computer...
  20. A

    Open source math software for Mac OS X

    Is there an open source math software for Mac OS X which is equivalent to Mathematica? I intend to use it for vector geometry problems (drawing planes, lines in 3-D space).
  21. T

    What version of Xcode is compatible with Mac OS Lion 10.7.3?

    Hello, I mistook downloding xcode 4.5.1 that is incompatible with my lion 10.7.3, which version of xcode should work with my mac os anyway ? should xcode 4.32 be the right choice ? Thank you.
  22. P

    Why is my OS X Lion 10.7.3 boot failing at still waiting for a root device?

    Why does my Lion 10.7.3 boot fail at "still waiting for a root device" ? :frown:
  23. M

    Best Linux OS to install/run MCNP with MPI or MPICH

    I've been having difficulty in successfully compiling the MCNP executable with the MPI/MPICH libraries on Scientific Linux 6.x (whatever the latest version is). I'm currently using MCNP5, and the latest distribution DVD. The compiler is GCC, and the MPI is MPICH 1.4.x (the version immediately...
  24. Y

    Need to buy a laptop that can load XP OS

    Hi All I have some old programs that can only run on XP. It is impossible to buy a new XP laptop anymore. I am thinking about buying a new Windows 7 laptop and load the XP into it so it can run the old programs. What do I have to look out when buying a laptop and also When is the XP OS I should...
  25. pairofstrings

    Which language is used in creating windows OS and it's application?

    Hi. Which language is used in creating windows OS and it's application?
  26. P

    Find the Value os Cos Vectors

    The points P, Q and R have position vectors 2i + 5j -3k, i + 4j - 2k and 3i + 3j - 2k, respectively. Given that the angle between PQ and PR is theta, find the value of cos of theta: So, the first thing I did was to find PQ and PR. I got: PQ = -i -j + k PR = i + 2j + k Then what I did...
  27. O

    What is the best Unix like OS for mathematical computation?

    I want to basically have a dedicated machine for running scientific computation programs and be able to access it remotely anywhere using a laptop/netbook. That means I don’t care much about GUIs. I’m used to using Unix and am perfectly fine with doing everything through a command window. At the...
  28. M

    How can I change pathnames on a Mac OS for a code that runs on ROOT?

    Hello, I need to install a code on my computer that runs on ROOT and the guy that sent it to me told me that I may have to change some pathnames that are specific to his computer in order for it to work. Now, I do not know how to do that and whenever I cd to the location where I put the...
  29. N

    How do I fix my Macbook booting straight into Windows instead of rEFIT?

    I have a 2006 macbook which I put rEFIT on to. So I could install OS's like ubuntu and windows, but when I was installing windows on the separate partition. For some dumb reason I told it NTFS instead of fat and now my computer boots straight into Windows. Skipping over the rEFIT, now I need...
  30. cepheid

    Vim colours in Mac OS X disappeared

    When I open a C source file in vim in Mac OS X, syntax is no longer colour-coded. I think that this happened after I tinkered around with ~/.bash_profile. I did the latter because I was trying to get ls to use colours, and I found an article online that told me what lines to add to .bash_profile...
  31. N

    EureKalc, a symbolic and numeric calculator for Mac OS X

    Hello, EureKalc 3 is an environment for numeric and symbolic calculation, dedicated to solving problems in the field of physics and engineering... It's a free and opensource MathCad like application running on Mac OSX. I developed it primarily for solving physics problems at the level of...
  32. rcgldr

    Calculators Do gaming consoles have pre-emptive multi-tasking OS?

    Wondering why games written for consoles and ported to PC's often seem to be system senstive where the entire game is affected by system peformance instead of just the graphics, which should be an independent thread / task in a game. In older multi-threaded games written for PC's, the graphics...
  33. J

    Mac OS upgrade 10.4.11 to 10.5 or more

    i have Mac OS 10.4.11 2.16 GHz Intel Core 2 Duo and 1.5 GB 667 MHz DDR2 SDRAM Mac is there know i want upgrade 10.4 .11 to 10.5 or 10.6 something any could help me in this how upgrade Thanks. jagadish A.V
  34. E

    What's Your Favorite WWE Series Episode?

    i just want peoples opinion on wrestling here we take all ideas the more the better for me i like watching as a long series os episodes and you?
  35. PainterGuy

    C/C++ What make Mac OS more safe if C++ is

    hello nice people, it was read by me that both ms windows and apple os has been made using basicaly c++. some days in past on a some antivirus article it came to my attention apple os is safe from virus than windows. if both use same kind of bricks they why bricks are easy to break in...
  36. B

    Calculators Can I Transfer Titanium OS to My Regular TI-89 and Use FlashApps?

    Hi, I was trying to solve inequalities on my regular TI-89 today and discovered I couldn't! I did solve((x+6)(x-2)>8,x) and pressed enter. Instead of the answer it just spit me back the question. I tried on 2 different TI-89 Titaniums and it worked fine. I called TI tech support and they...
  37. H

    Decoding the Creation of Chromium OS: A Teen's Impressive Feat

    http://www.nytimes.com/2010/05/09/business/09ping.html If someone could give me the technical details as to how this kid got the chromium source code compiled and created this project? Its things like these that make me sometimes regret starting college too early.
  38. dextercioby

    Hybridization states of the 8 orbitals (*) of Xe and Os

    Dear all, can you point me to a book reference where the hybridization states of the 8 orbitals (*) of Xe and Os in these 2 compounds \mbox{XeF_{8}} and \mbox{OsF_{8}} are justified in agreement with the quantum theory? Do these 16 bonds involve the "f" orbitals or not ? Thank you...
  39. L

    How to show the ground state is orthagnol with the first in a quantum harmonic os

    How to show the ground state is orthagnol with the first in a quantum harmonic os... Homework Statement This is a revision question for an upcoming quantum mechanics exam, that i am stuck on. Any help or idea at how to approach the question would be greatly appreciated, i get the feeling...
  40. S

    Windows or Ubuntu for an Electric Engineering student?

    Im an Electric Engineers student and I am trying to decide to use Windows XP or Ubuntu.. Most of the programs i need will run in both if not wine will do... What do you guys think? System has a quadcore CPU, 2TB HD and 16gb of ram.. (I know kinda overkill but i got it for free)
  41. C

    Is it really hard to create an OS like windows that self heal for viruses?

    I know its not impossible, since us humans are cable of self healing to diseases and viruses why not operating systems? I know if there's a good AI program embedded in windows maybe can be used to search for abnormalities in its everyday operation and when found it will develop or create a file...
  42. O

    How to construct batch or macro in Win OS

    In a windows (98,XP,VISTA) OS, is there a simple procedure to create a macro to rename files by adding a string of character(s) at the beginning (or end) of each existing filename within a folder? I often run into repetitive tasks on my computer(s), for example; renaming files within a folder...
  43. W

    Is OS Wasting Memory? Quick Experiment Results

    I did a quick experiment. First I compiled a simple hello world program in C++ , using a gcc compiler. The source code is 100 bytes, but the executable file it 9.6 kb. Then I dumbed the executable into hex using xxd, to check up on the 0s and 1s. It turns out there is a huge gap, almost a...
  44. A

    What OS and Browser Do You Use? An Introduction to My Computing Setup

    Well, I couldn't find an "Introduce Yourself" thread anywhere and I've made two posts on here out of the blue now so I figure some sort of introduction is in order. Hello, nice forum you have going on here. So which OS (Operating system) do you use? I'm currently using Windows XP and plan on...
  45. turbo

    Use command-line OS at BC. Get your PCs confiscated.

    I don't know how this one got under my radar. A Boston College student's computers, drives, storage devices, etc were seized so that investigators could examine them for evidence linking him to an email. The "probable cause"? The student was proficient in the use of an OS without resorting to...
  46. C

    Google Chrome OS: Google's Challenge to Microsoft

    http://technology.timesonline.co.uk/tol/news/tech_and_web/article6665703.ece *mod edit: fixed for copyright compliance*
  47. K

    Managing Threads in OS: User-Space vs. Kernel-Level Benefits

    Hello, please help with this question What of the following is difficult to manage if there are user-space threads and what will be easier when there are kernel-level threads? 1)code segment 2)data segment 3)stack 4)registers I don't understand the logic of that question, I think...
  48. rootX

    Upgrading Mac OS 10.4.11 to 10.5 for iPhone Dev SDK

    I was thinking if I have to buy new cd for getting 10.5 version or I can update to 10.5 from 10.4.11? Eventually, I am installing iPhone dev SDK and was thinking if I need 10.5 for that ... Thanks.
  49. D

    LaTeX LaTeX and Mac OS X's Grapher (advice)

    LaTeX and Mac OS X's "Grapher" (advice) Hello everyone. I recently stumbled upon something that I consider incredibly useful (and poor practice, I realize). I figured I'd post it here in the hopes of helping someone to discover this themselves. Using Grapher to create LaTeX expressions for PF...
  50. A

    How Do You Calculate the Pseudoinverse of a Singular Matrix?

    Homework Statement To determine the pseudoinverse of this matrix. 1 1 2 2 Homework Equations I find it difficult writing out the equation properly so i have attached it as a doc file. The Attempt at a Solution I have taken the limit as \delta tends to zero, but getting the...
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