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Articles indexed Tuesday June 21 2011

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• Asp.net certification

  - by poter

  I want to certified in .net which certification is best for me ? 8 Months back i am working on .net 3.5 framework, but at the same time .net 4.0 frameworks is also released last year, how can i grow myself by appearing this exams. I want to Switch myself because .net paid good salary package as compare to PHP. Note:-right now i m working in PHP 5.3 and PostgreSQL I know that certs != experience. but still i want to certified

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• Trying to find video of a talk on the impact of memory access latency

  - by user12889

  Some months ago I stumbled across a video on the internet of somebody giving a very good talk on the impact of memory access latency on the execution of programs. I'm trying to find the video again; maybe you know what video I mean and were I can find it. This is what I remember about the talk/video: I don't remember the title and it may have been broader, but the talk was a lot about impact of memory access latency in modern processors on program execution. The talk was in English and most likely the location was in America. The speaker was very knowledgeable about the topic, but the talk was in an informal setting (not a conference presentation or university lecture). I think the speaker was known to the audience and may even have been famous (I don't remember) The audience may have been a computer club / group of a local community or company (but I don't remember for sure)

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• Is JQuery or Javascript are capable for image processing?

  - by adietan63

  My plan is to develop a web based application in the future. I think, i can named it "Booth Reservation System" for the Events companies here in our country. One of the main functionality of the system and the most tricky part/ difficult part is the user can upload a "floor plan"(the design of the area were the booth is located in any image format) then the user can select on the specific location on the floor plan to reserve the booth. Also, the user can create floor plan on the system as another functionality of the system. What do you think? What programming language that i can use to accomplished the system? thanks!

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• Listing Unix experience on resume.

  - by beacon

  I have been using Linux for quite a long time, and I am familiar with many Unix commands and tools. However, my only experience with Unix is through various Linux distributions. How should I communicate on my resume that I am familiar with the Unix command line even though I have never used a UNIX(R) system? It seems strange to me to list Unix when I've never used UNIX(R). Some people refer to Unix clones as *nix, but I'm afraid that might fly over the heads of some HR people.

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• I'm learning html and I'm confused as to how href's work. [migrated]

  - by Robolisk

  Okay so i'm learning html right now and soon css. In my html coding I have a section like this for navigation: <div id="header"> <h1>Guild Wars 2 Fanbase</h1> <ol id="navigation"> <li><a href="/">Home</a></li> <li><a href="/facts">Facts</a></li> <li><a href="/gallery">Gallery</a></li> <li><a href="/code">Coding</a> <ul><li><a href="/code/line">Lines</a></li> <li><a href="/code/comment">Comment Lines</a></li> </ul> </li> </ol></div> Now when I open up this .html file this is all layed out the way I want it too look (the mark up that is). My question is this, when I click on a link on this site (this site being this code) I get an a error saying this webpage is not found, but of course. But how do I create it so I can have the web pages working together? I'm not sure how to word it correctly. Like, do I create another .html file in the same directory so somehow when I click the link it reads from the second .html file? If you not sure what I'm asking, just let me know and I'll try to be more specific. Thank you for your help (: excuse my mistakes in grammar, not the worlds best in English, trying my best (:

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• How do I publicize a cool bookmarklet?

  - by Malvolio

  I wrote a really cool bookmarklet and now I want to tell everyone. I have absolutely no idea where to go, is there some sort of exchange for these things? In case anyone is curious: I was tired of having to retype URLs from my desktop browser on to my phone browser, with its itsy-bitsy keyboard, so I wrote a bookmarklet that converts the current URL to a QR code, which I can scan in a few seconds. javascript:window.location="http://chart.apis.google.com/chart?chs=250x250&cht=qr&chl="+escape(window.location)

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• Does Ubuntu One offer Windows Live Sync type services?

  - by Raaaaay

  I'm an Ubuntu convert from Windows and I'm liking it very much. One of the few things I miss in Windows is their Live Sync. I don't know what it's like now or whether it still exists, but at the time (2008/2009), Windows Live Sync lets you sync folders between computers without uploading contents on their server. That is, only the metadata of the subscribed folders are uploaded (things like changelog etc.). I really liked that, and I was wondering if Ubuntu One has an option that does the same thing? At the moment it only seems to have the option to upload all file contents on the web, and I'd rather not do that. If Ubuntu One doesn't have the service similar to Windows Live Sync as described above, then I really recommend it. I would greatly appreciate it if someone can point me to the right place to make my recommendations. Thanks in advance!

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• I removed my WinXP machine's association to U1 from within the Windows client, and now can't get it back to work anymore

  - by Andrea

  After testing the windows client for U1 sync, I decided to test the preferences' settings, and tried to remove the association for the WinXP station from which I was working. Now I can start the client, but if I try to open the preferences' settings the application stops. I tried to uninstalle and reinstall, but that won't change the situation: appearently the old settings are kept the same even after a total reinstall.

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• Script at Startup

  - by OttoRobba

  I'm using 10.10 and I need to run a script in order to get a windows-like international keyboard layout - basically, it changes how dead keys work. (Original script from this page http://t.tam.atbh.us/en/win-us-intl-4-linux/ ) Since I can't seem to manage to get it going from boot, I have to run a custom script to launch any application. The script: export GTK_IM_MODULE=xim setxkbmap us intl xmodmap -e 'keycode 48 = dead_acute dead_diaeresis dead_acute dead_diaeresis acute diaeresis' application_name So if I put abiword in the application_name, it runs abiword respecting the keyboard script. Ideally, the original script would start at boot and then any applications I use would function with it - just like what happens if I run it first in Terminal (without the app_name line) and then run apps from it. I tried to make the script run from boot by adding it to /etc/rc.local but to no avail. Tried to add it to init.d but that also didn't work. If anyone can help, I'd be most grateful.

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• Need instructions how to create wpa_supplicant.conf and add fast_reauth=0 to it // WPA 2 Enterprise & frequent wlan disconnects

  - by nutty about natty

  Like many other natty users on a university / academic network, I'm experiencing annoying frequent disconnects / hangs / delays. See, for instance: https://bugs.launchpad.net/ubuntu/+source/wpasupplicant/+bug/429370 I would like to learn how to add fast_reauth=0 to the wpa_supplicant.conf file. This file, it seems, does not exit by default, and needs to be manually created first: http://w1.fi/gitweb/gitweb.cgi?p=hostap.git;a=blob_plain;f=wpa_supplicant/README [quote] You will need to make a configuration file, e.g., /etc/wpa_supplicant.conf, with network configuration for the networks you are going to use. [unquote] Further, I installed wpa_gui which probably needs to be launched with parameters, else it's pretty blank... What I'm hoping for is this: That creating a wpa_supplicant.conf file with fast_reauth=0 in it, saving it to the relevant path, will work and make my uni wireless (more or even completely) stable. I read mixed reviews about wicd (as an alternative to the network manager). Also note that on my basic wlan at home (with bog-standard wpa encryption) the connection is stable. Thanks!

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• No sound for headphones

  - by Joel Lino

  I was trying some of the solutions published in this forum for the same problem, but just one in particular work for me: add the line of code in the file alsa-base.conf. This just works for a few days, now the problem is back again. Any solution to fix this problem for good? Compaq Presario CQ40 $ lspci | grep -i audio 00:14.2 Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA) 01:05.1 Audio device: ATI Technologies Inc RS780 Azalia controller

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• How is ~/bin added to my path?

  - by Hari Sundararajan

  I have not added ~/bin to any of my .bash* files. However, $PATH does list that directory. The reason I am asking this in the Ubuntu specific StackExchange is because, well, I have exactly the same .bashrc, .bash_profile and .bash_aliases in both Fedora and Ubuntu machines (in fact, I have them on Dropbox and symlinked in ~) and in my Fedora machines, ~/bin is not added. In other words, if I add ~/bin to my path by making an entry in .bashrc, it shows up once on Fedora and twice on Ubuntu. Where is ~/bin being added to my path?

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• Display brightness adjustment not working

  - by nibot

  I have Ubuntu 11.04 installed on a Lenovo Thinkpad T410 laptop with nVidia GT218 display controller. I am unable to adjust the display brightness. Pressing Fn-Home and Fn-End brings up the display brightness on-screen display and the indicated level increases or decreases as it should. But the actual display brightness does not change. Earlier I was able to Ctrl-Alt-F1 over to a text terminal and then do Fn-Home / Fn-End to successfully change the display brightness, and then Ctrl-Alt-F8 back to the Gnome session with the new brightness. But after upgrading to 11.04 the psuedoterminals have disappeared.

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• What can I do about rsync of large files killing my laptop's wifi connection

  - by David Dean

  When I run a rsync to backup my home folder over the network like so: rsync -avhz --progress --delete /home/dbdean/ [email protected]:/home/backups/david/ I seem to have problems with my quite large .VirtualBox/HardDisks/Windows XP.vdi file. Occasionally the wifi will silently fail (the transfer stops, and any other network access is broken). If I reconnect the wifi to my network before the transfer times out, it happily keeps going (and other network access is back), but I can't just leave it unattended most of the time, as I have to keep an eye on it. I'm guessing this is probably a bug in the wireless card related to a particularly high sustained volume of network usage, but I'm not really sure where to start with diagnosing this problem so that I can provide a good bug report. Or it could be something else, I guess. Any help would be appreciated. My network card is an Atheros Communications Inc. AR9285, as lspci -k shows: 43:00.0 Network controller: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) (rev 01) Subsystem: Hewlett-Packard Company Device 3040 Kernel driver in use: ath9k Kernel modules: ath9k

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• ImportError: No module named gtk

  - by Rick_2047

  after the debacle a few hours back I managed to get a working desktop after using an ethernet cable and sudo apt-get install ubuntu-desktop But now when I try to run ubuntu software center from CLI this is what I get rick@Abigail:~$ sudo software-center Traceback (most recent call last): File "/usr/bin/software-center", line 34, in <module> import gtk ImportError: No module named gtk Any guesses how to fix this. The search box on synaptic is also missing. It has something to do with module named axi. I think the both are related.

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• How to let the browser prefer IPv6 over IPv4?

  - by Grumbel

  I installed miredo and have IPv6 up and running it seems. I can ping6 hosts and download webpages with wget or my webbrowser when I specify IPv6 addresses, however whenever I specify a hostname that is offered over both IPv4 and IPv6 the browser picks the IPv4 address for the connection. How can I change that and let the browser use IPv6 instead of IPv4 if available? Googling around I found a hint that browsers will prefer IPv4 over IPv6 for 6to4/teredo tunnels, but so far I haven't found an explanation why or how to change that.

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• Make curl download using non-Privacy extension IPv6 address?

  - by Azendale

  I currently use net.ipv6.conf.all.use_tempaddr=2 to get IPv6 privacy addresses (which have a random host part are regenerated a couple times a day). I need dynamic DNS because the computer is connected to different networks and that changes the network part of the address. I'm using curl to download a dynamic DNS url and want it to use the Non-random address that uses my MAC. How can I make curl prefer the non-privacy address?

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• Facebook like button for a Facebook feed item

  - by jverdeyen

  Here is what I do: When the admin of a website i'm creating adds a new 'news' item to his website, it directly posts the same item on the Facebook 'fanpage' of the website. This is done by an Facebook app with the permissions to post an item on the Facebook fanpage. So far so good. I'm getting the new post id from the facebook graph. Here is what I want to achieve: I'm adding a 'like' button on the original website, but when this is clicked it should be referenced to the same post item on the facebook page. So if someone likes the news post on the website he should also like the referencing facebook feed post. Which is exactly the same. Can this be done? I've been playing around with the href etc of the like button, without any success. When I hit the like button it likes the url given, but is doesn't recognizes that this is a feed post. Any idea? Thx in advance.

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• Why do people crawl sites without downloading pictures?

  - by Michael

  Let me show you what I mean: IP Pages Hits Bandwidth 85.xx.xx.xxx 236 236 735.00 KB 195.xx.xxx.xx 164 164 533.74 KB 95.xxx.xxx.xxx 90 90 293.47 KB It's very clear that these person are crawling my site with bots. There's no way that you could visit my site and use <1MB bandwidth. You might say that there's the possibility that they could be browsing the site using some browser or plug-in that does not download images, js/css files, etc., but the simple fact of the matter is that there are not 90-236 pages that are linked from the home page (outside of WP files), even if you visited every page twice. I could understand if these people were crawling the site for pictures, but once again, the bandwidth indicates that this isn't what is happening. Why, then, would they crawl the site to simply view the HTML/txt/js/etc. files? The only thing that I can come up with is that they are scanning for outdated versions of WordPress, SQL injection vulnerabilities, etc., which makes me inclined to outright ban the IPs, but I'm curious, is it possible that this person is a legitimate user, or at the very least, not intending to be harmful?

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• clean urls using .htaccess

  - by Napster

  I am trying to implement clean urls using .htaccess. Basically after searching for some time I found out this code RewriteRule latestnews/([a-zA-Z0-9]+)/$ http://thinkmovie.in/index.php/latestnews/?nid=$1 [L] RewriteRule latestnews/([a-zA-Z0-9]+)$ http://thinkmovie.in/index.php/latestnews/?nid=$1 [L] so when I try to access the following url http://thinkmovie.in/index.php/latestnews/272 it redirects to http://thinkmovie.in/index.php/latestnews?nid=272 But what I want is to retain the url in the browsers address bar as http://thinkmovie.in/index.php/latestnews/272

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• htaccess url rewrite

  - by user761396

  i used to have a rewrite rule to RewriteRule ^([^/]+)\.htm$ index.php?c=$1 [NC] RewriteRule ^([^/]+)\.htm/([0-9.]+)$ index.php?c=$1&amt=$2 [NC] now, i have to change to RewriteRule ^1/([^/]+)\.htm$ index.php?c=$1 [NC] RewriteRule ^1/([^/]+)\.htm/([0-9.]+)$ index.php?c=$1&amt=$2 [NC] RewriteRule ^2/([^/]+)\.htm$ index2.php?c=$1 [NC] RewriteRule ^2/([^/]+)\.htm/([0-9.]+)$ index2.php?c=$1&amt=$2 [NC] (the difference is adding a subdirectory) my question is how to redirect my old ones to the 1/ subdirectory? thank you

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• XNA Quadtree with LOD

  - by Byron Cobb

  I'm looking to create a fairly large environment, and as such would like to implement a quadtree and use LOD on it. I've looked through numerous examples and I get the basic idea of a quadtree. Start with a root node with 4 vertices covering the whole map and divide into 4 children nodes until I meet some criteria(max number of triangles) I'm looking for some very very basic algorithm or explanation with respect to drawing the quadtree. What vertices need to be stored per iteration? When do I determine what vertices to draw? When to update indices and vertices? Hope to integrate the bounding frustrum? Do I include parent and child vertices? I'm looking for very simple instruction on what to do. I've scoured the internet for days now looking, but everyone adds extra code and a different spin without explanation. I understand quadtrees, but not with respect to 3d rendering and lod. A link to an outside source will probably have been read by myself already and won't help. Regards, Byron.

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• gl_PointCoord always zero

  - by Jonathan

  I am trying to draw point sprites in OpenGL with a shader but gl_PointCoord is always zero. Here is my code Setup: //Shader creation..(includes glBindAttribLocation(program, ATTRIB_P, "p");) glEnableVertexAttribArray(ATTRIB_P); In the rendering loop: glUseProgram(shader_particles); float vertices[]={0.0f,0.0f,0.0f}; glEnable(GL_TEXTURE_2D); glEnable(GL_POINT_SPRITE); glEnable(GL_VERTEX_PROGRAM_POINT_SIZE); //glTexEnvi(GL_POINT_SPRITE, GL_COORD_REPLACE, GL_TRUE);(tried with this on/off, doesn't work) glVertexAttribPointer(ATTRIB_P, 3, GL_FLOAT, GL_FALSE, 0, vertices); glDrawArrays(GL_POINTS, 0, 1); Vertex Shader: attribute highp vec4 p; void main() { gl_PointSize = 40.0f; gl_Position = p; } Fragment Shader: void main() { gl_FragColor = vec4(gl_PointCoord.st, 0, 1);//if the coords range from 0-1, this should draw a square with black,red,green,yellow corners } But this only draws a black square with a size of 40. What am I doing wrong? Edit: Point sprites work when i use the fixed function, but I need to use shaders because in the end the code will be for opengl es 2.0 glUseProgram(0); glEnable(GL_TEXTURE_2D); glEnable(GL_POINT_SPRITE); glTexEnvi(GL_POINT_SPRITE, GL_COORD_REPLACE, GL_TRUE); glPointSize(40); glBegin(GL_POINTS); glVertex3f(0.0f,0.0f,0.0f); glEnd(); Is anyone able to get point sprites working with shader? If so, please share some code.

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• Detect click on Triangle and Circle buttons

  - by chr1s89

  How can i detect clicks on a texture (will be a button in my game) that has a form of a triangle or circle. I know only the rectangle solution where u can use the positions + the width/height but this dont work for that because clicks will be detected at the transparent pixels. I heard of pixel-perfect collision is it the right way for this? It would be great if someone can give me a example for such a solution or other.

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• How to detect collisions between sprite and a user generated shape of some sort?

  - by Huwell

  How to detect a collision between a sprite and a user generated shape of some sort. For example. There are some objects on the screen. The user takes their finger and draws an circle shape around a object (The selection rule is painting circle around the sprite, but the painting shapes may be various). I need to detect which object selected, which just like: (demo images) http://i52.tinypic.com/28h0t1g.png

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