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• Weekend Project: Make Your Own Ferromagnetic Fluid

  - by Jason Fitzpatrick

  Experiments this simple and fun give you no reason to leave all science-based goofing off to the professionals: whip up a beaker of ferromagnetic fluid to capture magnetic waves in motion. The premise is simple: by combing a viscous liquid (in this case vegetable oil) with a magnetic powder (in this case MICR copy toner) and introducing a strong magnetic source (such as neodymium rare earth magnets), you can actually see the magnetic waves in physical space. It’s like the old magnetic filings on the table top trick, but in 3D. Check out the video above to see how you can mix up a batch of your own. How to Make Magnetic Fluid [YouTube] What Is the Purpose of the “Do Not Cover This Hole” Hole on Hard Drives? How To Log Into The Desktop, Add a Start Menu, and Disable Hot Corners in Windows 8 HTG Explains: Why You Shouldn’t Use a Task Killer On Android

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• X technology is dead

  - by Daniel Moth

  Every so often, technology pundits (i.e. people not involved in the game, but who like commenting about it) throw out big controversial statements (typically to increase their readership), with a common one being that "Technology/platform X is dead". My former colleague (who I guess is now my distant colleague) uses the same trick with his blog post: "iPhone 4 is dead". But, his motivation is to set the record straight (and I believe him) by sharing his opinion on recent commentary around Silverlight, WPF etc. I enjoyed his post and the comments, so I hope you do too :-) Comments about this post welcome at the original blog.

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• What You Said: Tools and Tricks for Scoring Great Deals Online

  - by Jason Fitzpatrick

  Earlier this week we asked you to share your favorite tools and tips for scoring great deals online. Now we’re back to showcase your money-saving techniques. Our Ask the Readers series gives you, the awesome How-To Geek reader, a chance to share your tips, trick, and technological know-how with your fellow readers right on the front page. Every week we ask a question and every week we round up your tips to share. This week we’re taking a look at your tips and tricks from What Tools Do You Use to Score Great Deals Online.HTG Explains: What Are Character Encodings and How Do They Differ?How To Make Disposable Sleeves for Your In-Ear MonitorsMacs Don’t Make You Creative! So Why Do Artists Really Love Apple?

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• How do websites with no content rank so high?

  - by Akito

  I was just searching for, how to close a sim and I got this website on the first page of Google. The website does not have the solution to the problem. there is just a line written about it but the SEO or a trick is played so well that it has got so many real comments. The comments are users asking him to help me close their sims. Now I don't get this. There is no content then how does the site rank so high? Thankyou.

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• Copying logins to another server

  - by DavidWimbush

  I'm busy setting up a new server to replace our main live server and part of that is to get the logins copied over. The database users will come over when I restore the databases but I wanted to get the logins they relate to, with the same SIDs, passwords and other properties as they have on the current server. In fact I don't even know the passwords for the logins created by our Sage accounting package - apparently they are generated by the setup using a number of ingredients unique to each installation. I did some Googling and fount this KB article: http://support.microsoft.com/kb/918992/, which more or less did the trick. It produces a set of CREATE LOGIN statements with the SIDs and hashed passwords. But it didn't include the default language, which can subtly or dramatically alter the behaviour of date-related SQL. So I added that bit and you can help yourself here.

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• Where can I start learning to build web applications in C#

  - by Carson Myers

  So far I've written web sites in PHP, except for a pet project of mine written in Python. I'd like to start learning C# for use on the web, but I have no idea where to start. I know nothing of .Net. Are there any good tutorials or online books etc. which give a brief intro to the .Net environment (specifically C#, and specifically for the web)? I'm not even sure what I need to install. Visual Studio I guess, but what else? Anything special, or will VS do the trick?

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• Buddypress with bbpress: Showing latest topics on front page

  - by MadsMadsDk

  I'm doing a wordpress solution with BuddyPress and bbPress, where I need to display the five newest topics on the homepage, as if it was blog-entries, but it seems kind of hard to accomplish. I'm figuring I gotta do something with the activity stream, but it seems like the stream is based on the user who is currently logged in, which is not what I want. So what should I do? Use a nifty plugin that does the trick (maybe someone knows a plugin I don't know of, as I've already tried the bbPress Latest Discussion plugin) Hardcode a forum-activity loop into the page-template file, using the is_front_page() function? Is there a forum-activity hook, that display the latest forum topics sitewide? Thanks in advance

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• Magento Bulk Product Import + Modules Nightmare

  - by mike

  Have 5,000 products in CSV file File has been re-saved as UT8 file in google documents and exported to CSV from excel File loads perfectly with all fields in demo of magento store manager (except we dont want to buy it:) When trying to upload in regular Magento..keep getting error messages on column duplicates....yes we have hundreds of duplicates as the titles of products in fields correspond with different sizes, etc...no way around it Any solutions around this or any open source software similar to store manager that can do the trick. Ready to give up and go to paid solution such as Big Commerce Also, Uploaded a bunch of free modules/keys...of open source bulk import products from magentocommerce but I cant find them anywhere in the main admin panel to use...there is no menu item for them anywhere??

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• Could not apply stored configuration for monitors

  - by Hernantz

  Well this happened when I upgraded to Natty. Not only seems I can't change my resolution to higher than 1024x768 but it appears at the left and using only 70% of the monitor's width. I tried logging in but in ubuntu classic mode, and i was able to change it, but that trick did not work anymore. (May this be a compiz problem?) Anyways, here is my /var/log/Xorg.0.log http://pastebin.com/Ew4wwLab and lspci -nn | grep VGA: 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller [8086:27a2] (rev 03) I tried using xrandr for adding manually a resolution of 1280x1768 but without luck. Here is the xrandr output Screen 0: minimum 320 x 200, current 1024 x 768, maximum 4096 x 4096 LVDS1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm 1024x768 60.0*+ 800x600 60.3 56.2 640x480 59.9 VGA1 disconnected (normal left inverted right x axis y axis) TV1 disconnected (normal left inverted right x axis y axis) 1280x1024 (0xc6) 109.0MHz h: width 1280 start 1368 end 1496 total 1712 skew 0 clock 63.7KHz v: height 1024 start 1027 end 1034 total 1063 clock 59.9Hz

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• How to Stream Media Files From any PC to Your PlayStation 3

  - by Zainul Franciscus

  Have you ever wished that you could stream video files from your computer over to your TV without actually hooking the two directly together? If you’ve got a PlayStation 3, you’re in luck, because that’s today’s geek lesson. If you’re wondering how to rip dvds to your PC, we’ve got you covered with an article on the subject, but you can stream video files that you’ve recorded yourself, or downloaded from somewhere. Image by playstation-themes Latest Features How-To Geek ETC Internet Explorer 9 RC Now Available: Here’s the Most Interesting New Stuff Here’s a Super Simple Trick to Defeating Fake Anti-Virus Malware How to Change the Default Application for Android Tasks Stop Believing TV’s Lies: The Real Truth About "Enhancing" Images The How-To Geek Valentine’s Day Gift Guide Inspire Geek Love with These Hilarious Geek Valentines Four Awesome TRON Legacy Themes for Chrome and Iron Anger is Illogical – Old School Style Instructional Video [Star Trek Mashup] Get the Old Microsoft Paint UI Back in Windows 7 Relax and Sleep Is a Soothing Sleep Timer Google Rolls Out Two-Factor Authentication Peaceful Early Morning by the Riverside Wallpaper

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• What simple techniques do you use to improve performance?

  - by Cristian

  I'm talking about the way we write simple routines in order to improve performance without making your code harder to read... for instance, this is the typical for we learned: for(int i = 0; i < collection.length(); i++ ){ // stuff here } But, I usually do this when a foreach is not applicable: for(int i = 0, j = collection.length(); i < j; i++ ){ // stuff here } I think this is a better approach since it will call the length method once only... my girlfriend says it's cryptic though. Is there any other simple trick you use on your own developments?

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• How do I make urxvt render xft fonts?

  - by wishi

  I wonder whether there's a way to make urxvt render xft fonts: URxvt.font: xft:Droid Sans Mono Slashed:pixelsize=9:Regular URxvt.boldFont: xft:Droid Sans Mono Slashed:pixelsize=9:Bold URxvt.talicFont: xft:Droid Sans Mono Slashed:pixelsize=9:Italic URxvt.bolditalicFont: xft:Droid Sans Mono Slashed:pixelsize=9:Bold:Italic If I try this, I get something like: So it scales pretty bad: ! Fonts Xft.dpi: 132 Xft.antialias: true Xft.rgba: rgb Xft.hinting: true Xft.autohint: true Xft.hintstyle: hintfull I'm not sure whether this is one of the reaons. However I want antialias and that Droid. Is there any trick here?

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• Friday Fun: Maus Trap

  - by Asian Angel

  Friday is here once again, but today you are not the only one who needs to escape! This week your mission is to help a poor mouse named Peanut escape the dangerous lab she is trapped in. Do you have what it takes to save the day Latest Features How-To Geek ETC How to Enable User-Specific Wireless Networks in Windows 7 How to Use Google Chrome as Your Default PDF Reader (the Easy Way) How To Remove People and Objects From Photographs In Photoshop Ask How-To Geek: How Can I Monitor My Bandwidth Usage? Internet Explorer 9 RC Now Available: Here’s the Most Interesting New Stuff Here’s a Super Simple Trick to Defeating Fake Anti-Virus Malware The Splendiferous Array of Culinary Tools [Infographic] Add a Real-Time Earth Wallpaper App to Ubuntu with xplanetFX The Citroen GT – An Awesome Video Game Car Brought to Life [Video] Final Man vs. Machine Round of Jeopardy Unfolds; Watson Dominates Give Chromium-Based Browser Desktop Notifications a Native System Look in Ubuntu Chrome Time Track Is a Simple Task Time Tracker

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• Figuring a max repetitive sub-tree in an object tree

  - by bonomo

  I am trying to solve a problem of finding a max repetitive sub-tree in an object tree. By the object tree I mean a tree where each leaf and node has a name. Each leaf has a type and a value of that type associated with that leaf. Each node has a set of leaves / nodes in certain order. Given an object tree that - we know - has a repetitive sub-tree in it. By repetitive I mean 2 or more sub-trees that are similar in everything (names/types/order of sub-elements) but the values of leaves. No nodes/leaves can be shared between sub-trees. Problem is to identify these sub-trees of the max height. I know that the exhaustive search can do the trick. I am rather looking for more efficient approach.

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• How to forward an Internet connection to another network?

  - by Naveen

  Can somebody please make a shot & sweet tutorial telling how to forward an Internet connection to different network interfaces in Ubuntu...? This is the idea: I'm using a 3G usb modem to get Internet on my laptop ,which is: ppp0 IP=10.225.174.70 My Wifi device is: wlan0 MAC=78:e4:00:d4:3d:85 These devices are determined from ifconfig command. I want to share ppp0's internet connection with wlan0 device, so I can connect any other device to wlan0 and browse internet from that device. Making a Hotspot using Network settings GUI doesn't do the trick because the other device won't receive Internet, it just connects to wlan0. I heard iptables can do this, but I'm totally confused by the alien commands seen online. I'm no expert in networking. Please compose a clear & simple answer using the above devices. This is a huge annoying problem for iPhone & tablet users came to Ubuntu from Windows.

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• Desktop Fun: Fantasy Warriors Wallpaper Collection

  - by Asian Angel

  Whether they are defending their homelands and the innocent, seeking fame and fortune, or out to conquer and plunder these fantasy warriors will add a nice bit of adventure to your desktop. Get ready to journey into other realms with our Fantasy Warriors Wallpaper collection Latest Features How-To Geek ETC Internet Explorer 9 RC Now Available: Here’s the Most Interesting New Stuff Here’s a Super Simple Trick to Defeating Fake Anti-Virus Malware How to Change the Default Application for Android Tasks Stop Believing TV’s Lies: The Real Truth About "Enhancing" Images The How-To Geek Valentine’s Day Gift Guide Inspire Geek Love with These Hilarious Geek Valentines Four Awesome TRON Legacy Themes for Chrome and Iron Anger is Illogical – Old School Style Instructional Video [Star Trek Mashup] Get the Old Microsoft Paint UI Back in Windows 7 Relax and Sleep Is a Soothing Sleep Timer Google Rolls Out Two-Factor Authentication Peaceful Early Morning by the Riverside Wallpaper

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• Restoring Databases

  - by Grant Fritchey

  I like the way Mike Walsh phrased it: You're Only As Good as Your Ability To Restore. Ain't it the truth. You may be taking backups, incrementals, and log backups of your databases. You may have DBCC in place, and all that fun stuff. But if you haven't restored the database, what do you have? You don't know. The trick is, restoring databases takes up a heck of a lot of space on your servers. To test all your productions backups, you'd need a system with as much space as production. unless.. Ever heard of SQL Virtual Restore? Check it out. With this, you answer Mike's questions and validate your backups without having to have twice the amount of space. That's a win, and we all know, winning is better than losing.

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• Walking Through a Seaside Village Wallpaper

  - by Asian Angel

  Sea View [DesktopNexus] Latest Features How-To Geek ETC How to Enable User-Specific Wireless Networks in Windows 7 How to Use Google Chrome as Your Default PDF Reader (the Easy Way) How To Remove People and Objects From Photographs In Photoshop Ask How-To Geek: How Can I Monitor My Bandwidth Usage? Internet Explorer 9 RC Now Available: Here’s the Most Interesting New Stuff Here’s a Super Simple Trick to Defeating Fake Anti-Virus Malware The Citroen GT – An Awesome Video Game Car Brought to Life [Video] Final Man vs. Machine Round of Jeopardy Unfolds; Watson Dominates Give Chromium-Based Browser Desktop Notifications a Native System Look in Ubuntu Chrome Time Track Is a Simple Task Time Tracker Google Sky Map Turns Your Android Phone into a Digital Telescope Walking Through a Seaside Village Wallpaper

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• sync korganizer with google calendar

  - by Joshua Robison

  You know that calendar that pops up when you click on the time in the panel? I like it but I tend to keep all my events in google calendar. korganizer version is 4.4.11 Is there a way that I can get my google calendar to sync with this panel-clock calendar? thanks EDIT:1 It looks like what I need to do is sync google calendar with korganizer and that should do the trick, from what I understand. EDIT:2 some answers here suggest I need this plug-in sudo apt-get install akonadi-kde-resource-googledata but they give no explanation on how to configure it once installed.

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• How much help should I give during technical interviews?

  - by kojiro

  I'm asked to perform or sit in during many technical interviews. We ask logic questions and simple programming problems that the interviewee is expected to be able to solve on paper. (I would rather they have access to a keyboard, but that is a problem for another time.) Sometimes I sense that people do know how to approach a problem, but they are hung up by nervousness or some second-guessing of the question (they aren't intended to be trick questions). I've never heard my boss give any help or hints. He just thanks the interviewee for the response (no matter how good or bad it is) and moves on to the next question or problem. But I know something about the rabbit hole that defeat and nerves can lead you down, and how it disables your mind, and I can't help wondering if providing a little help now and then would ultimately help us end up with more capable programmers instead of more failed interviews. Should I provide hints and assistance for befuddled interviewees (and if so, how far should I go while still being fair to the more prepared candidates)?

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• Week in Geek: Botnet Epidemic Fueled by Malware Toolkits Edition

  - by Asian Angel

  This week we learned how to stream media files from any PC to a PlayStation, enable user-specific wireless networks in Windows 7, monitor the bandwidth consumption of individual applications, configure the Linux Grub2 Boot Menu the easy way, “add Dropbox to the Start Menu, understand symbolic links, & rip TV Series DVDs into episode files”, and more Latest Features How-To Geek ETC How to Enable User-Specific Wireless Networks in Windows 7 How to Use Google Chrome as Your Default PDF Reader (the Easy Way) How To Remove People and Objects From Photographs In Photoshop Ask How-To Geek: How Can I Monitor My Bandwidth Usage? Internet Explorer 9 RC Now Available: Here’s the Most Interesting New Stuff Here’s a Super Simple Trick to Defeating Fake Anti-Virus Malware Comix is an Awesome Comics Archive Viewer for Linux Get the MakeUseOf eBook Guide to Speeding Up Windows for Free Need Tech Support? Call the Star Wars Help Desk! [Video Classic] Reclaim Vertical UI Space by Adding a Toolbar to the Left or Right Side of Firefox Androidify Turns You into an Android-style Avatar Reader for Android Updates; Now with Feed Widgets and More

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• Workaround the flip queue (AKA pre-rendered frames) in OpenGL?

  - by user41500

  It appears that some drivers implement a "flip queue" such that, even with vsync enabled, the first few calls to swap buffers return immediately (queuing those frames for later use). It is only after this queue is filled that buffer swaps will block to synchronize with vblank. This behavior is detrimental to my application. It creates latency. Does anyone know of a way to disable it or a workaround for dealing with it? The OpenGL Wiki on Swap Interval suggests a call to glFinish after the swap but I've had no such luck with that trick.

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• 12.04 scanner works fine as super-user but is not recognised as a normal user

  - by Eugénio Outeiro

  I have an all-in-one printer Epson SX130, wich I have just tried to install. I got the printer working with no problem, but I couldn't set the scanner up. I have had another all-in-one printer before (Brother DCP-125C), and had just the same problem, so I decided to try the same trick I used to do then, running the scanning program as super-user: $sudo simple-scan and $ sudo xsane Once again, it worked just fine, and I could use the scanner. Anyhow, this solution is a little annoying, because I also have to change the permissions to the files I get scanning like this. I have been searching the internet for solutions and got to know this must have something to do with user groups permissions, but couldn't find a satisfying solution. Is there anyone with an idea? Thank you in advance.

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• Find the latest file by modified date

  - by Rich

  If I want to find the latest file (mtime) in a (big) directory containing subdirectories, how would I do it? Lots of posts I've found suggest some variation of ls -lt | head (amusingly, many suggest ls -ltr | tail which is the same but less efficient) which is fine unless you have subdirectories (I do). Then again, you could find . -type f -exec ls -lt \{\} \+ | head which will definitely do the trick for as many files as can be specified by one command, i.e. if you have a big directory, -exec...\+ will issue separate commands; therefore each group will be sorted by ls within itself but not over the total set; the head will therefore pick up the lastest entry of the first batch. Any answers?

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• Which tips helped you learn touch-typing? [closed]

  - by julien

  I've been learning touch-typing for about two weeks now, and I'm really commited to mastering this skill. Eventhough I'm doing ok with prose already, I'm struggling with programming syntax and even more with keybindings. Those stray you away from the home row more than regular words, and aren't as easy to practice. So I often hunt and peck in order to just get it out, but when reverting to old habits like this, I find it hard to get back into the touch-typing mindframe quickly. One little trick that has helped me so far when getting lost is to reposition every finger on its home row key, and mentally visualize the layout bias of the keyboard, ie the backslash kind of alignment of key columns. It's hard to describe though and probably a bit weird... Hope you guys have better tips !

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