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• Tiling Problem Solutions for Various Size "Dominoes"

  - by user67081

  I've got an interesting tiling problem, I have a large square image (size 128k so 131072 squares) with dimensons 256x512... I want to fill this image with certain grain types (a 1x1 tile, a 1x2 strip, a 2x1 strip, and 2x2 square) and have no overlap, no holes, and no extension past the image boundary. Given some probability for each of these grain types, a list of the number required to be placed is generated for each. Obviously an iterative/brute force method doesn't work well here if we just randomly place the pieces, instead a certain algorithm is required. 1) all 2x2 square grains are randomly placed until exhaustion. 2) 1x2 and 2x1 grains are randomly placed alternatively until exhaustion 3) the remaining 1x1 tiles are placed to fill in all holes. It turns out this algorithm works pretty well for some cases and has no problem filling the entire image, however as you might guess, increasing the probability (and thus number) of 1x2 and 2x1 grains eventually causes the placement to stall (since there are too many holes created by the strips and not all them can be placed). My approach to this solution has been as follows: 1) Create a mini-image of size 8x8 or 16x16. 2) Fill this image randomly and following the algorithm specified above so that the desired probability of the entire image is realized in the mini-image. 3) Create N of these mini-images and then randomly successively place them in the large image. Unfortunately there are some downfalls to this simplification. 1) given the small size of the mini-images, nailing an exact probability for the entire image is not possible. Example if I want p(2x1)=P(1x2)=0.4, the mini image may only give 0.41 as the closes probability. 2) The mini-images create a pseudo boundary where no overlaps occur which isn't really descriptive of the model this is being used for. 3) There is only a fixed number of mini-images so i'm not sure how random this really is. I'm really just looking to brainstorm about possible solutions to this. My main concern is really to nail down closer probabilities, now one might suggest I just increase the mini-image size. Well I have, and it turns out that in certain cases(p(1x2)=p(2x1)=0.5) the mini-image 16x16 isn't even iteratively solvable.. So it's pretty obvious how difficult it is to randomly solve this for anything greater than 8x8 sizes.. So I'd love to hear some ideas. Thanks

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• Where has Cloud Computing gone?

  - by Srikar

  I have been hearing about this term for close to 5 years now. I have read about services from Microsoft (Azure), but I have never saw it adopted in the mainstream usage. The thing I am trying to understand is this: What happened to cloud computing? Is the infrastructure at present insufficient to implement this? Is it still in its infancy? Is it being used in other forms, like all the services Google seems to provide (plus Plus Google OS, etc)? If it has failed, then why?

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• How are the conceptual pairs Abstract/Concrete, Generic/Specific, and Complex/Simple related to one another in software architecture?

  - by tjb1982

  (= 2 (+ 1 1)) take the above. The requirement of the '=' predicate is that its arguments be comparable. Any two structures are comparable in this case, and so the contract/requirement is pretty generic. The '+' predicate requires that its arguments be numbers. That's more specific. (socket domain type protocol) the arguments here are much more specific (even though the arguments are still just numbers and the function itself returns a file descriptor, which is itself an int), but the arguments are more abstract, and the implementation is built up from other functions whose abstractions are less abstract, which are themselves built from less and less abstract abstractions. To the point where the requirements are something like move from one location to another, observe whether the switch at that location is on or off, turn the switch on or off, or leave it the same, etc. But are functions also less and less complex the less abstract they are? And is there a relationship between the number and range of arguments of a function and the complexity of its implementation, as you go from more abstract to less abstract, and vice versa? (= 2 (+ 1 1) 2r10) the '=' predicate is more generic than the '+' predicate, and thus could be more complex in its implementation. The '+' predicate's contract is less generic, and so could be less complex in its implementation. Is this even a little correct? What about the 'socket' function? Each of those arguments is a number of some kind. What they represent, though, is something more elaborate. It also returns a number (just like the others do), which is also a representation of something conceptually much more elaborate than a number. To boil it down, I'm asking if there is a relationship between the following dimensions, and why: Abstract/Concrete Complex/Simple Generic/Specific And more specifically, do different configurations of these dimensions have a specific, measurable impact on the number and range of the arguments (i.e., the contract) of a function?

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• which one is the safe site to buy cheap wildstar gold?

  - by user50866

  Wsoplat.com is a professional online shop which provide the cheapest wildstar gold, the fastest delivery, the best 24/7 online service for the players. Secure Guarantee cheap wildstar gold offered by wsoplat.com are reliable sourced, safe and honored. Lowest Price We are constantly trying to offer the lowest prices on Wildstar Gold for our loyal customers. Covenient shopping procedure & secure delivery method We are very experienced in this business. Every order is processed both smoothly and efficiently. Friendly Service and Instant Delivery Wsoplat 's delivery department work 24/7/365, We have professional and friendly customer service operators, they can help you buy wildstar gold, accounts, items and more. 5% discount code to buy WildStar gold in wsoplat - WSOPLAT http://www.wsoplat.com/

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• I am not satisfied with my career and accomplished nothing in my life. what should I do now [on hold]

  - by user2906155

  After my complete my College education I got chance to work on software programming. I work on few software and now nothing make me feel good. I don't like web-programming. Can't have too much mind to play with other people in team a designer or a senior. it's totally time wasting for me. We do integration without any source code control. copy through pen drive. I write in too many language for web-programming but know nothing about any language specially. I don't like to have a BOSS. I would like to do something on my own. From last 3 year I thing I will got a better job but I am unable to get it. I am not good at Programming nor my English is native. I have a big list for pay then my salary. I have problem with nothing. my atmosphere is about illiterate people. they abuse 24 hours a day. this thing make me sick. people watch CRIME patrol my home (watching rape in TV because it's happen to someone). I do my work from home. I don't like to live in my state. All state is one of the biggest illiterate state of my country. Once I apply for a Job in China and it's look like I can get thing Job but I don't get it. My family doesn't want me to settle anywhere else. I told my family 4 time a day that I can't live in this worst situation. Everyone (including the person who I work for) tell me that you can do it only you have money. Now I really don't know how to make money. My job not allow me to work for anyone. My productivity going down since I don't learn anything new. I thing if this happen to me for next 2 year I don't have any knowledge more then a peon. I hate it. When I was in other city then I see that if I spent 7 days their all my 7 days going better. even I go for travelling in green places then I like it. but all I hate it where I work for. When I work on other city then I see my productivity are improved and I don't hate my work. I listen a song "If you don't your love what are you doing it for". I seriously don' t know what I still live here because this place gave me nothing but depression and trouble. for people I clear that I don't belong to RICH or middle class family. All I got is doing something on my own or help of someone. affording a rental place make my run on footpath. All I save in one month is just 10$ (approximately) (actually I afford some guys's education now). Can a programmer live worst life like this. I really not happy. Today is a festival in India and I don't celebrate it because I really hate myself. I want to do suicide. someone guide me how to start solving this headache

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• Force Gnome 3 to work

  - by nkg5

  I have Ubuntu 12.10 on dual-boot with windows XP. My PC specifications are AMD Sempron 2800+ 1,6GHz with 512 MB ram and ATI Radeon 9250 graphic card with 128 MB memory. As Unity works slow and I don't like it's look, I installed gnome-shell. But as you know, Gnome 3 won't work on it. But gnome classic without effects works great. Thing is, when I turn off windows (by holding the power button or pressing restart button) my resolution on Linux is changed to 1024x768, and I can only change it by turning off the PC and turning off it's power source. But it is not the problem. The problem is that it runs Gnome 3 after one restart, it also runs better than Unity. My question is: Can I somehow force gnome 3 to work always and disable some of it's effects so it can run better?

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• Getting URLs from search results

  - by tereško

  After 1 months research I basically give up on getting all URL's from a search results programmatically, I looked at Google Search API to find a way to get millions of search results "URL's" to be specific to a text file or something relative but no success, but I am 100% there must be a way or trick of doing it. Real Question : Is there anyway programmatically or manually I can get 1000+ search results (URLs using search query e.g. "Apple" returns million of results on google and I want as much as possible URLs of them results in a text file) Note : Don't care for any specific search engine or programming language or technique or software or just point me to right direction, but yeah I tried it with google API i can't get more then 100 results at all.

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• Core Graphics Rotating a Path

  - by Scott Langendyk

  This should be a simple one, basically I have a few paths drawn with core graphics, and I want to be able to rotate them (for convenience). I've tried using CGContextRotateCTM(context); but it's not rotating anything. Am I missing something? Here's the source for drawRect - (void)drawRect:(CGRect)rect { CGContextRef context = UIGraphicsGetCurrentContext(); CGContextSetLineWidth(context, 1.5); CGContextSetStrokeColorWithColor(context, [UIColor whiteColor].CGColor); CGContextSetShadow(context, CGSizeMake(0, 1), 0); CGContextBeginPath(context); CGContextMoveToPoint(context, 13.5, 13.5); CGContextAddLineToPoint(context, 30.5, 13.5); CGContextAddLineToPoint(context, 30.5, 30.5); CGContextAddLineToPoint(context, 13.5, 30.5); CGContextAddLineToPoint(context, 13.5, 13.5); CGContextClosePath(context); CGContextMoveToPoint(context, 26.2, 13.5); CGContextAddLineToPoint(context, 26.2, 17.8); CGContextAddLineToPoint(context, 30.5, 17.8); CGContextMoveToPoint(context, 17.8, 13.5); CGContextAddLineToPoint(context, 17.8, 17.8); CGContextAddLineToPoint(context, 13.5, 17.8); CGContextMoveToPoint(context, 13.5, 26.2); CGContextAddLineToPoint(context, 17.8, 26.2); CGContextAddLineToPoint(context, 17.8, 30.5); CGContextStrokePath(context); CGContextSetFillColorWithColor(context, [UIColor whiteColor].CGColor); CGContextSetShadowWithColor(context, CGSizeMake(0, 0), 0, [UIColor clearColor].CGColor); CGContextFillRect(context, CGRectMake(26.2, 13.5, 4.3, 4.3)); CGContextFillRect(context, CGRectMake(13.5, 13.5, 4.3, 4.3)); CGContextFillRect(context, CGRectMake(13.5, 26.2, 4.3, 4.3)); CGContextRotateCTM(context, M_PI / 4); }

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• Blackberry (Java) - Drawing graphics on top of rendered text/buttons etc

  - by paullb

  Based off the one of the demos I have the following code. Currently what displays in the simulator is just hte contents of the paint function, however the ObjectChoiceField is still selectable if one happens to click in the right location. I would like both the text contents and the paint function contents to appear. Is this possible? public CityInfoScreen() { //invoke the MainScreen constructor super(); //add a screen title LabelField title = new LabelField("City Information Kiosk", LabelField.ELLIPSIS | LabelField.USE_ALL_WIDTH); setTitle(title); //add a text label add(new RichTextField("Major U.S. Cities")); //add a drop-down list with three choices: //Los Angeles, Chicago, or New York //... String choices[] = {"Los Angeles","Chicago","New York"}; choiceField = new ObjectChoiceField("select a city", choices); add(choiceField); Manager man = this.getMainManager(); } ... public void paint(Graphics g){ super.paint(g); // g.drawRect(0,left,500,500+left); g.setGlobalAlpha(0); g.drawRect(100-left,100-top,200,200); String text = new Integer(left).toString(); String text2 = new Integer(top).toString(); g.drawText(text + " " + text2,120-left,120-top); }

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• Blackberry app development - Drawing graphics on top of rendered text/buttons etc

  - by paullb

  Based off the one of the demos I have the following code. Currently what displays in the simulator is just hte contents of the paint function, however the ObjectChoiceField is still selectable if one happens to click in the right location. I would like both the text contents and the paint function contents to appear. Is this possible? public CityInfoScreen() { //invoke the MainScreen constructor super(); //add a screen title LabelField title = new LabelField("City Information Kiosk", LabelField.ELLIPSIS | LabelField.USE_ALL_WIDTH); setTitle(title); //add a text label add(new RichTextField("Major U.S. Cities")); //add a drop-down list with three choices: //Los Angeles, Chicago, or New York //... String choices[] = {"Los Angeles","Chicago","New York"}; choiceField = new ObjectChoiceField("select a city", choices); add(choiceField); Manager man = this.getMainManager(); } ... public void paint(Graphics g){ super.paint(g); // g.drawRect(0,left,500,500+left); g.setGlobalAlpha(0); g.drawRect(100-left,100-top,200,200); String text = new Integer(left).toString(); String text2 = new Integer(top).toString(); g.drawText(text + " " + text2,120-left,120-top); }

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• How to make computer interface with circuit

  - by light.hammer

  I understand that I can build a circuit that will do whatever I like (ex: a simple circuit that will turn on a motor to open the blinds or something), and I can write a program that will automate my computer/mac however I like (ex: open this program at this time, or with this input and create a new file, ect). My question is, how can I interface the two? Is there an easy DIY or cheap commercial (or not cheap but functional) USB plug that will turn on/off from computer commands? I'm basically looking for some sort of on/off switch I can script/applescript. How would you even approach this problem, would I have to write my own driver some where along the way?

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• Remote Desktop, Host: 2008, Client: Windows 7, The remote computer requires Network Level Authentica

  - by deerchao

  Hi, today I accidently changed one option of Teminal Services, I checked "Allow connections only from computers running Remote Desktop with Network Level Authentication". After that, I can't connect to my server any more. The error says: The remote computer requires Network Level Authentication, which your computer does not support. But my client pcs(both home and at office) are running Windows 7, as far as I know, it shoud support NLA; And in About dialog of Remote Desktop Connection there says "Supports Network Level Authentication". My server is running Windows Server 2008, placed in IDC center; I could connect to it before I change the settings. All other sevices(like IIS, SQL Server) are running normally. For clients, I tried two PCs running Windows 7, and two virtual windows XP machine running in Virtual PC and Virtual Box, all of them gives the same error message. Is there a way I can make things right without go to IDC which is far away? Thanks.

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• Clean up infected computer from viruses

  - by ripper234

  I have a computer which had AVG Free installed from day one. After several months of operation, it starts detecting viruses and trojans all the time. Besides running a full scan, what should I do to clean the computer? Should I install another anti-virus or anti-malware tool (can it help?), or once viruses infect a system the only real solution is a clean format? (Lately I've heard of viruses that burn themselves in the BIOS, so a clean format might not always work ... how common is this technique? Should I burn a fresh BIOS as well?)

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• Lag spikes at full CPU usage, lagy mouse, maybe video card

  - by Roberts

  My PC specs: Motherboard Name - Gigabyte GA-945PL-S3 CPU Type - DualCore Intel Core 2 Duo E4300, 1800 MHz (9 x 200) OS - Microsoft Windows 7 Ultimate OS Kernel Type - 32-bit OS Version - 6.1.7601 I bougth a new video card one month ago. GeForce 210. I didn't have any problems. I wanted to overclock it, in other words: "Play with it". So I installed Gigabyte EasyBoost from CD and overclocked the GPU 590 + 110 mhz, memory to max to 960mhz from 800mhz. Benchmarks showed a little bit bigger score. Then I overclocked shader clock from 1405 to [..] (don't remeber really). So I was playing Modern Warfare 2 when off sudden computer froze when I wanted to select team, I was afk before that. I had to reset CMOS. After that I had problems with Skype: unread messages and no sound. Then I figured it out that when ever I open EasyBoost - Skype starts to glitch again. Now I use EVGA Precission X. Now after a month, I cleaned computer and closed the case, it was open all the time. I started to overclock GPU clock only (just a bit) because there was no problems that would stop me. So sometimes on heavy CPU load graphics starts to lag. Dragging a window is painful to watch too. Sometimes the screen freezes for 5 to 10 seconds (I can see that hard disk activity is maximal). You may say that CPU fault it is, isn't it? But sometimes lag spikes starts randomly when CPU load is at maximum. All 3 benchmark softwares (PerformanceTest, NovaBench and MSI Kombustor) shows that performance of my video card has dropped about 25%. BUT! CPU score is lower too. I ignored these problems but when I refreshed Windows Experience Index I was shocked. Month before (in latvian language but not so hard to understand): Now 01.04.2012 (upgraded RAM): This happened when I tried to capture Minecraft with Fraps on underclocked GPU to 580mhz (def: 590mhz): All drivers are up to date. Average CPU temperature from 55°C to 75°C (at 70°C sometimes starts these lag spikes). Video card's tempratures are from 45°C to 60°C (very hard to reach 60°C). So my hope is that the video card is fine, cause this card is very new and I want to upgrade CPU anyways. Aplogies for my mistakes in vocabulary (I am trying to type this as fast I can). Update 02.04.2012 - 7:21 Forgot one thing, my hard disk is extrimly slow and I will upgrade it this week or next week so I will be installing same OS again. I am multi-tasker but I can't do much because of 1.8 GHz CPU and slow hard drive (Model ID - WDC WD800JD-60JRC0). The Windows Experience Index is back to normal. Actually "Spelu grafika" (Gaming graphics) are higher than month ago. During this test mouse was very lagy, but month ago there weren't any problems. WHY!?

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• Restoring Windows Server 2008 to a different computer

  - by user8160

  I used Windows backup function to backup everything to an external HD. Is it possible to restore the backup to a different computer?

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• RAMDiskVE keeps causing computer to freeze

  - by Steph

  I found this in the Event Viewer logs: The description for Event ID 11 from source RAMDiskVE cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer. Which doesn't say much. The details don't reveal much more: Failed to read configuration information from registry. 0000000002002C00000000000B0007C0000000000000000000000000000000000000000000000000 So my question is, what is RAMDiskVE and what device is it for? Basically I'm trying to rule out hardware but I have no idea what's failing...

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• Computer won't recognize second WD internal HD

  - by music man

  I installed a Western Digital Caviar Green 1TB internal hard drive, and want to use it for back up. My BIOS recognizes the device, but it is not recognized in Disk Management. It also is not recognized in "my computer." When I right-click my C drivepropertieshardware, I see it listed. First the drive was plugged into SATA port 1 on my motherboard, then I tried it in port 3, where it remains. I've been working on this for hours. Any help would be appreciated. More info Hard drive model #:WD10EADS-65M2B1 Windows 7 Home Premium 64 bit Service Pack 1 Computer:HP Model p6404y, Processor:AMD phenom II x4 820 2.80GHZ 8 gigs RAM

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• Sudden restart now chrome kills computer

  - by Kai

  My computer suddenly restart itself the other day and when it came back up so much as clicking on the icon for Google Chrome freezes everything. I uninstalled Chrome and tried reinstalling is but as soon as the download finished, the computer froze again. I tried installing an earlier version (about a week prior) and it froze differently but still froze. I am also getting notification that the battery needs to be replaced. At the moment I am running it sans battery and using firefox and everything seems to be fine. I have a HP dv4t running Windows 7.

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• Computer and internet use on a boat?

  - by dlamblin

  Let's assume that I seriously would like to be able to use my computer as easily and as carefreely while on a boat as I do while at home. In short, if I were on a boat for extended periods, such as two weeks at a time and occasionally over a few days out of port (this would be a 2 person sailing vessel), what would my options be for power, durability, and of course, internet access? I want more than just email, as I will likely keep doing a tad of development, and will be looking at google earth from time to time. I am already assuming that we're going with some kind of laptop, maybe even a macbook pro 12". I personally feel that netbooks are underpowered. And the last computer that I got a boat-friendly rating for was a ZX Spectrum, which was before the internet, and was likely due to it's 12vdc-happiness.

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• Computer is totally crashed

  - by Napster

  my computer kept restarting on its own at random times varying from 1 minutes, to 20 minutes(then goind in a constant restart loop every ~10 seconds). I had to turn it off and wait minutes or hours before attempting to restarting to go further in the boot process. Now, it just does not turn on. I posted this before: Computer crashes every 2 to 10 minutes but I did not have the time to check the temperature. I don't want to pay to get it checked up, but I want to know what is wrong. Is the processor fried? Thank you

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• Using using a DVI instead of a VGA increase computer screen monitor resolution

  - by Jessica M.

  This is for a computer screen. Both my video card and computer screen have DVI ports on them but I'm using a VGA. I'm wondering if there would be a difference if i switch from VGA to DVI. My current resolution is 1920x1080 with the VGA cord. will my resolution increase if i switch to a DVI? Are there any advantage of switching from VGA to DVI? If there will be a difference if i switch, I've read there are 5 different type of DVI cables. how do I know which one to buy?

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• computer and User Account Migrated using ADMT but not sending mail

  - by TJ

  I have successfully migrated a User and Computer account using ADMT. The user is able to login to the computer with the new account and is able to open outlook receive mail but is not able to send internal or external mail. The Exchange server is still in the Old domain. The bounce back message received was that the user doesn't have permissions to send to the recipient. When I migrated the user I did migrate the SID history so why is mail not being about to be sent? The body of the bounce back message is as follows: Your message did not reach some or all of the intended recipients. Subject: test Sent: 1/6/2010 4:17 PM The following recipient(s) could not be reached: User, user on 1/6/2010 4:17 PM You do not have permission to send to this recipient. For assistance, contact your system administrator. MSEXCH:MSExchangeIS:/DC=com/DC=DOMAIN:SERVER

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• Best wireless mouse/keyboard for conference room computer?

  - by Brett

  What would be the best wireless mouse and keyboard for a conference room computer that is used by multiple employees throughout the day? We have one in there right now that is really cheap that doesn't work half the time. This is due to the fact that the batteries run down when left on... and it seems to have problems losing its pairing with the computer dongle. Any ideas on something that won't have battery problems, is very reliable and somewhat tough? Price isn't too much of an issue, but I'd still prefer to get something for less than $100 just in case someone walks away with it.

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• What's Your Favorite Harmless Computer Practical Joke?

  - by Ben Griswold

  A couple of months ago, I returned from lunch to find that typing any key launched a random application. As I always lock my machine before walking away from it, my first thought was that a co-worker was playing a practical joke on me. As it turned out, the cause was random computer wonkiness. But just in case there's a need :), what's your favorite harmless computer practical joke? For example, would you alter host file entries to direct google.com to a random site or would you put tape over the optical sensor of a co-worker’s mouse?

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• Samba networking with a domain-joined computer

  - by MCS

  I have two computers connected to the same linksys router - one running Ubuntu 8.04 and one running Windows 7. The Windows computer is part of a work domain (when connected via VPN). I'm trying to also create a home network so I can access the linux server from Windows. From what I understand, I have to first create a Windows workgroup and then configure Samba on linux to join the Windows network. So in Windows, I went to Control Panel - Network and Internet - HomeGroup and got the following message: There is currently no homegroup on your network. Because this computer also belongs to a domain, you can't create your own homegroup, but can join one created by someone on your network. Can I use Samba to create a homegroup? Is there any other way to create a Windows workgroup? Or am I barking up the wrong tree completely?

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