Computer Science

I'm eager to hear the opinion of experts... so, what do you think about D (the programming language) ? It's potentially as fast as C, with an option to use a garbage collector, yet for some reason it's not really popular yet.

Has anyone heard of a utility or programming approach that allows you to set a MAXIMUM CPU utilization or power consumption rate? I know you can set task priority or cpu/core affinity with Task Manager, but that still allows a process to use up to 100% of the CPU's time. What I really want to do is run a process at a low power consumption rate, which is actually a much trickier animal. I'm not sure if the kernel will even allow this. But I know some processors have step-down modes that can be triggered programmatically, and it also occurred to me that perhaps if you can deliberately force the processor to run at less than 100% utilization then it might be effective…

Robots. The more complicated you make them the more complicated they have to reconstruct to make copies of themselves. I have an idea, how about. Buying a building. Putting a computer in it. Having the computer do something on-line that makes it money such as renting it's CPU power. The money it makes has to be enough to maintain the building it is in and make a prophet (although it could be quite a small prophet). When enough money is saved the computer has to buy a new computer and pay the person who delivers it to install it. This if needed could be done in two chunks. Delivered with instructions of how to get in and leave it inside and then instructions to…

I propose a program to help the blind see gray-scale images as images. Not just read descriptions of them. While screen readers are good they can't portray how an image really looks, only a description of it. For every pixel in the image a waveform (sound) is created. The x, y positions and Brightness (b) of the pixel change 3 properties of the sound. Possible properties include (phase) a time shift in the waveform perhaps relative to it's frequency, frequency, amplitude, (power) to the power of, squareness, (gap) period of silence between each wave, and resolution. For example x could be phase or gap. y could be frequency. b could be amplitude. The ave…

I'm looking for a good introduction to C/C++, either a book, an ebook, a website, anything. I already know JAVA and Python, so I'm not completely new to programming.

Thought you all might find this interesting. Mozilla is apparently opening up the discussion on the future of web surfing. Here's the site: http://labs.mozilla.com/projects/concept-series/ Several videos on that site talk about specific concepts. Here's a link to an article about it: http://arstechnica.com/news.ars/post/20080806-mozilla-mocks-up-possible-firefox-successors-in-idea-factory.html Some of the ideas coming out are pretty interesting.

Alright, I tried install a ramdisk in Windows Vista (strangles self) ... the other day... and it didn't fly too well. I tried doing it by reading some documentation about the ramdisk.sys file created for Windows 2000 and such. Yeah, I could just download someone's program and try that, but the whole pay for it otherwise use the evaluation doesn't fly with me. Ramdisk is pretty nice. I like it. Makes me feel warm and cozy inside. Unfortunately, I can't create it manually in Vista. I could use Linux, but the alsaconf issue with hda-intels isn't flying well with me, because I like sound and techno and messing on a computer while listening to techno.... *ahem* …

Just curious if anyone else has messed around with LINQ. It stands for Language Integrated Query, and it's Microsoft's effort to move the SQL language into the programming domain before compile time. One advantage of this is that using Visual Studio 2008 you get after-the-dot methods and usability assistance with your SQL while writing actual programming code. The real advantage of it is that it enables a kind of higher-level organization and management of your data infrastructure. Right now in most n-tier, data-driven business applications you work something like this: - Presentation Tier (theme/skin/css, buttons, grids for display, etc) - Information Tier (c…

We've been using Alice (the IDE, not the language) to teach introductory programming, but I've always found the interface clunky and confusing, and so far from what the students end up doing later as to almost render the experience moot. Our students seem to have trouble separating what they learn about programming from what they've learned about Alice in particular. The next class they take introduces them to writing Windows apps in Visual Basic, which is just a whole different ball of wax. (From there they go to an advanced Windows forms class, then my ASP.NET course, where they learn some C# to compliment their VB knowledge.) For a long time we taught them pseud…

- Moving pairs Given something like a checkers board, moving pairs would be checkers paired together and arranged on the board Given something like a checkers board, moving pairs are checker pieces said to be paired. The pairs don't have to be next to eachother. Any way arranged is fair for how this works, but it matters for how they work. There's no such thing as an empty space. They are the idea of how they move, and the problem with finding how to move them. - Moving a pair Find the pair to be what doesn't have any way to move. Each of the pair is to move together at the same time. A pair can only move to another pair. A pair…

A Canadian blogger has offered $1000 to anyone who can trace the source of a death threat posted on his blog. Anyone here up to the task and fancy making a bit of money? http://ezralevant.com/ ''Tonight at 10:30 p.m. MT I received this comment posted to my blog: ezra you will be killed by my hands The IP address from which the comment was made is 72.137.199.43 I'm not a good Internet sleuth; I think that's a Rogers account. That's all I know. But I'd like to know more.'' ''UPDATE: Here are some more clues for you. I searched for the above IP address within my blog's statistics program, and I came up with the information here. The user is in Tor…

The more languages you've used, particularly from different areas, the better programmer you'll be! The Pragmatic Programmers recommend learning a new language every year. I'm presently learning a language called Scala. What languages have you used?

Can anyone tell me if this is right? It's based on what little I remember from the course I took in digital design.

Hello. Im a computer scientist student in 3rd year uni and soon to be graduated then i'll be a qualified professional computer scientist. I was wondering is it bad or good to just learn/know 1 programming language? Throughout my years in uni so far ive been doing Java as my university is concentrating on Object Oriented. It is therefore my knowledge will be full of Object oriented programming techniques with Java once i leave uni to go out in the big world of working. Then this means in my opinion i will be restricted with just that one skill and knowledge of Java. :-( And when i get a job (hopefully) i will need to learn some new language & concepts (doubt…

Salutations! Anyway, I'm currently looking for a few Computer Science graduates to answer some questions. It's a requirement for our class, so it would really help if you were willing to answer them. On to the questions: Background information: Age, social and marital status, salary, socioeconomic status, educational background, interests, and hobbies, personality descriptions, and skills. A. What is the nature of your career / job? -> daily tasks, areas of responsibility, stressors, successes B. What are your skills and interests that has made you to choose this career/ job? C. What do you like about your job? D. What do you dislike about your jo…

Do you know some books who teach you how to write interpreters?

hi... I rearly need some help, i am doing a project in spim for my college and i need some help.I don't know how to convert an 64-bit integer(which is in 2 of 32-bit register) into a string.I know that i must divide tha number with 10 but i don't know how to do it.Thank you very much...

Do you work in scientific computing? Does this sound like your development process: You use a program / model maintained by a central group. They release new versions every now and then. Sometimes you make improvements directly to the central codebase and submit patches. You take their releases and start wiring in your own code or 3rd party modules. In the case of 3rd party modules, you're also making your own improvements, possibly to make the code easier to integrate into other projects, and maybe want to contribute that back. You may also have many scientists in your group who are working on specific modules. This may take the form of one or two scient…

Hello everyone. Just wanted to know which one is better,AVG or AVAST and why you think so? Thanks.

Ive tried out linux since one of the first distros of red hat came out...horrible support, etc so I removed it. Every year or so I try again and there is still horrible hardware support. Aside from that, software runs much slower on Linux than on an OSX or Windows machine. My Vista machine outperforms the software that runs on Linux -- such as open office(which is sluggish), image/video editing software, development tools, etc. Whats the deal with this? A lot of people boast Linux as the "uber-OS", yet it fails to perform. I know im not the only one that feels this way -- a lot of people feel this way as well and thats why its not time to migrate as of ye…

I remember learning in school about how ROM chips are created. They start out with a uniform grid of wires with fuses at each intersection. Then, depending on how they want the chip to compute incoming data, they blow certain fuses while keeping other fuses intact. Signals cannot pass by the blown fuses making for only certain pathways that lead to the output lines. Does anyone know of any online ROM ship simulators? Something that lets the user manually blow the fuses and set the input and then see what kind of output results?

I couldn't find a function to do this, so I used "ceiling" and "floor" together with "trunc", and some nested "if"'s to do it for me... now this is what I got: =IF((A29-(10*(TRUNC((TRUNC(A29))/10))))<2.5,FLOOR(A29,5),(IF((A29-(10*(TRUNC((TRUNC(A29))/10))))<5, CEILING(A29,5),(IF((A29-(10*(TRUNC((TRUNC(A29))/10))))<7.5,FLOOR(A29,5),CEILING(A29,5)))))) my question is... did I waste my time? Is there an easier way? Ceiling and floor round, but only in one direction, so you need the if's to determine which way to round the number. the nested truncs are just to get rid of the numbers at the beginning. The function is only designed to work on numbers b…

Dear members does anyone know a differences of bee algorithms and ACO in details for optimization problems Thank you very much! hasan

Hi all, I am doin masters and studying Theroy of Computation.I have my final paper after few days and i m facing some serious problem regarding exercises of Theroy of Computation book "Sipser - Introduction to the theory of computation - 2nd EId".I tried to search the sol on internet but didnt find it anywhere.Plz help me if anyone can provide me with the sol or with the link where i can get help regarding exercise quiestions.Some of the exercise questions are solved while some are not.I am writing few of the questions which r troubling me.Please if anyone can give me the sol of these. 1) Let INFINITE PDA = {<M>,M is a PDA and L(M) is an infinite language}…

Looking for opinions about which software would be the best to use. I'm trying to convince the other editors to redesign the site for our Uni's newspaper. Right now, we're using College publisher (which is a god awful program - little freedom, terrible layout, etc). I'm a complete newb and web-based programming, though my brother has some experience, and I will most likely be conscripting his help. It seems as if Joomla is easier to use, but Drupal gives you a lot more functionality. I'd rather get the interface that Drupal could provide, and the better admin accessability side of things, but I don't have 1000 man hours to devote. Any thoughts? …