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  • How to Estimate Needed Bandwidth for New Web Application?

    - by Noah Goodrich
    I am working on a brand new SaaS web application and need to estimate the initial bandwidth usage. Since the site doesn't exist yet, and since this is my first endeavor of this sort, I'm not really sure how much bandwidth to estimate to begin with. We will be using Linux, Apache, PHP and Mysql. The content will be generated dynamically. There will be images as part of the site design but user's will also upload images that will be displayed and documents that will be stored for download at later times. We'd like to be able to support 500,000 page loads per month with estimated image loads being about two to three times that.

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  • How to retrieve packages from an ISO?

    - by Santosh Kumar
    I have an ISO image of BackTrack and I want to try it, but I don't want to mess up my bootloader with installing 2 Linuxes and a Windows. As BackTrack is Debian based I want to use its packages in my current Ubuntu. I tried mounting the ISO with Archive Mounter but whole operating system seems to be in casper/filesystem.squashfs file. I have seen this answer but none of those methods work, because I can't find any pool directory. The only file I suspect is filesystem.squashfs which is 3.3 GB in size. Please help me install tools from BackTrack's ISO.

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  • How can I downsample a texture using FBOs?

    - by snape
    I am rendering a scene to FBO as my render target whose size is 8 times the size of the orignal screen in OpenGL. Now i wan to downsample the texture generated by FBO to the size of the screen so as to achieve spatial anti aliasing. How do i achieve the down sampling ? Please provide implementation details. Note : If there is a better way of doing anti aliasing in FBOs please mention that too. I am trying to remove the aliasing in the image attached below.

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  • Desktop Fun: Heroes of DC Comics Wallpaper Collection

    - by Asian Angel
    DC Comics has a great line-up of super hero characters and we have gathered together some of DC’s finest for you in today’s collection. Give your desktop super powers with our Heroes of DC Comics Wallpaper collection. Note: Click on the picture to see the full-size image—these wallpapers vary in size so you may need to crop, stretch, or place them on a colored background in order to best match them to your screen’s resolution. How to Make and Install an Electric Outlet in a Cabinet or DeskHow To Recover After Your Email Password Is CompromisedHow to Clean Your Filthy Keyboard in the Dishwasher (Without Ruining it)

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  • Spectacular Explosion On Sun [Video]

    - by Gopinath
    Yesterday seems to be it’s too hot inside the crust of Sun and it resulted in an big explosion!! An explosion that was spectacular to watch and the event was something like never seen before : a solar flare, a coronal wave, a filament eruption, a coronal mass ejection, coronal rain and a coronal mass ejection to name a few. Check the embedded video Did you notice the hole on the Sun when it exploded? It’s a really very big one and can accommodate many Earth’s into that (check this for size comparison) Image and story via Geeked On Goddard This article titled,Spectacular Explosion On Sun [Video], was originally published at Tech Dreams. Grab our rss feed or fan us on Facebook to get updates from us.

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  • How To Make Disposable Sleeves for Your In-Ear Monitors

    - by YatriTrivedi
    In-ear monitors are great, until the rubber sleeves stop being comfortable. Here’s a quick and cheap way to make disposable ones using foam ear plugs so you can stay comfortable while listening. Latest Features How-To Geek ETC Macs Don’t Make You Creative! So Why Do Artists Really Love Apple? MacX DVD Ripper Pro is Free for How-To Geek Readers (Time Limited!) HTG Explains: What’s a Solid State Drive and What Do I Need to Know? How to Get Amazing Color from Photos in Photoshop, GIMP, and Paint.NET Learn To Adjust Contrast Like a Pro in Photoshop, GIMP, and Paint.NET Have You Ever Wondered How Your Operating System Got Its Name? Lakeside Sunset in the Mountains [Wallpaper] Taskbar Meters Turn Your Taskbar into a System Resource Monitor Create Shortcuts for Your Favorite or Most Used Folders in Ubuntu Create Custom Sized Thumbnail Images with Simple Image Resizer [Cross-Platform] Etch a Circuit Board using a Simple Homemade Mixture Sync Blocker Stops iTunes from Automatically Syncing

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  • Use Your PC to Keep Yourself Entertained While Traveling for the Holidays

    - by Justin Garrison
    Staying connected may be hard no matter what network you are on, and in flight Wi-Fi isn’t pervasive enough to count on. Here are tips and tricks to keep yourself entertained when unplugged and traveling. Image Via MarinaAvila Latest Features How-To Geek ETC How to Use the Avira Rescue CD to Clean Your Infected PC The Complete List of iPad Tips, Tricks, and Tutorials Is Your Desktop Printer More Expensive Than Printing Services? 20 OS X Keyboard Shortcuts You Might Not Know HTG Explains: Which Linux File System Should You Choose? HTG Explains: Why Does Photo Paper Improve Print Quality? Ubuntu Font Family Now Available for Download Oh No! WikiLeaks Published Santa Claus’s Naughty List [Video] Remember the Milk Now Supports HTTPS Encryption for the Entire Session MTCrypt Is an Efficient Front End for Mounting TrueCrypt Volumes 10 Things You Should Do with Your New Android Phone Walking Through the Park on a Snowy Night Wallpaper

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  • My site is getting popular, bandwidth expensive

    - by ElbertF
    I'm running a (small) image hosting site which has been getting a little bit of traction lately (2,000 to 5,000 visitors a day, spikes up to 10,000). It's hosted on Linode and I've already run out of the bandwidth for this month (300 GB). I've experimented with Amazon S3 but that was costing me $5 a day, Linode currently costs me $30 a month. I get a tiny bit of revenue from ads (Adsense and Black Label Ads) but it's not enough to break even. What should I do? Obviously I'd like to keep running the site but not if it starts costing me a lot of money.

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  • HTG Explains: How Do Noise Reducing Headphones Work?

    - by YatriTrivedi
    Passive noise reduction, active noise cancellation, sound isolation… The world of headphones has become quite advanced in giving you your own private sound bubble. Here’s how these different technologies work. Latest Features How-To Geek ETC Should You Delete Windows 7 Service Pack Backup Files to Save Space? What Can Super Mario Teach Us About Graphics Technology? Windows 7 Service Pack 1 is Released: But Should You Install It? How To Make Hundreds of Complex Photo Edits in Seconds With Photoshop Actions How to Enable User-Specific Wireless Networks in Windows 7 How to Use Google Chrome as Your Default PDF Reader (the Easy Way) WizMouse Enables Mouse Over Scrolling on Any Window Enhance GIMP’s Image Editing Power with Gimp Paint Studio Reclaim Vertical UI Space by Moving Your Tabs to the Side in Firefox Wind and Water: Puzzle Battles – An Awesome Game for Linux and Windows How Star Wars Changed the World [Infographic] Tabs Visual Manager Adds Thumbnailed Tab Switching to Chrome

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  • GNU Octave - question about graphs and plotting

    - by Twórca
    I've had task to do - to make an graphical interpretation of adding two functions together: sin(8x) and multiplied -sign(x) in Octave, as shown on image above. And I've done that, but I don't know how to get rid of these lines, which link up gaps between separated values (for example, -1 and 1). I don't want them to be seen especially in third graph. To make helping me easier, I'm going to tell you what I did: I made linear series of numbers, from -100 to 99 (tempx). tempy = -sign(tempx) y1 = [tempy tempy tempy tempy] (this line is kinda funny, if you know Polish language) Creating y2 - sinus function y3 = y2 + y1 Plotting, subplotting... Screenshot Awaiting for instructions...

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  • Multiple domain with one host - SEO pov

    - by Swing Magic
    Lets say i currently have mycompanyname.com domain. and after several time i found that its very hard to hit top of serp. after searching i find there is domain that match with one of my keyword. i build website with 2 language. and im able to assign both of url with different language. my question, impact with SEO? it will have a load of duplicated content between those domain (image video etc). im afraid one of my website will have marked as plagiarist because many of content will be same. anyone experience the same condition? Thank you!

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  • 2D Grid based game - how should I draw grid lines?

    - by Adam K Dean
    I'm playing around with a 2D grid based game idea, and I am using sprites for the grid cells. Let's say there is a 10 x 10 grid and each cell is 48x48, which will have sprites drawn there. That is fine. But in design mode, I'd like to have a grid overlay the screen. I can do this either with sprites (2x600 pixel image etc) or with primitives, but which is best? Should I really be switching between sprites and 3d/2d rendering? Like so: Thanks!

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  • USB-live does not save files between sessions

    - by Mads Skjern
    I created a USB-stick with Ubuntu, using the recommended tool "Startup Disk Creator" and the image for Ubuntu 13.10. The very simple interface looks like this: There can't be much to misunderstand in this GUI. I have chosen to create a USB stick with a live version of Ubuntu, which will save files and settings from session to session, on the USB drive, right? Well, it just doesn't save anything. I go in, create a file on Desktop, restart and it's gone. I did the whole procedure three times, i.e. first creating the USB, then testing if I could save. Have I misunderstood something?

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  • Use Your Google Docs Account to Monitor Web Site Uptime

    - by Jason Fitzpatrick
    If you’re looking for a free and customizable uptime monitor, you can easily tweak a Google Docs account to do the dirty work for you. Over at Digital Inspiration they share a great tutorial and bit of code for turning a Google Docs spreadsheet into a monitoring service. All you need is a Google account and a copy of their free spreadsheet to enjoy minute-by-minute monitoring with email alerts. Hit up the link below to read how to set it up and get a copy of the monitoring script. Monitor Your Web Site’s Uptime with Google Docs [Digital Inspiration] How To Be Your Own Personal Clone Army (With a Little Photoshop) How To Properly Scan a Photograph (And Get An Even Better Image) The HTG Guide to Hiding Your Data in a TrueCrypt Hidden Volume

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  • Ubuntu 12.10 Unity Dash transparency problem

    - by madox2
    I have just upgraded my Ubuntu 12.04 to 12.10 and there is following problem. When I press super button to show Unity Dash I get wrong background image behind the dash box. Especially I can see part of the bottom of the screen. Also when I set transparency to top panel the background behind is not correct. Here is an example with Mc Duck picture: Unity Mc Duck example Do you have any ideas whats wrong? My system preferences: Ubuntu 12.10 32-bit Intel® Pentium(R) CPU G840 @ 2.80GHz × 2 GeForce GTS 450/PCIe/SSE2 Any help will be highly appreciated!

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  • Should I Leave My Laptop Plugged In All The Time?

    - by Jason Fitzpatrick
    Should you leave your laptop plugged in and charging when you’re not on-the-go? What’s best for the battery? What’s best for your user experience? Read on as we investigate. Image available as wallpaper-size download here. Today’s Question & Answer session comes to us courtesy of SuperUser—a subdivision of Stack Exchange, a community-drive grouping of Q&A web sites. 8 Deadly Commands You Should Never Run on Linux 14 Special Google Searches That Show Instant Answers How To Create a Customized Windows 7 Installation Disc With Integrated Updates

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  • Dynamic Terrain Texture

    - by lgrevenl
    I've been looking at a 2D physics game called 'Hill Climb Racing' (Android and iOS) and was wondering how they went about texturing the terrain? I've had a think about it and I've come up with nothing and finding a resource on the web has proved impossible. Please help. The game mentioned uses Cocos2d. Would it be just as doable in a different environment? EDIT: I was looking at another question: Drawing large 2D sidescroller level terrain The end result is what I'm looking for, but in my mind I was thinking that there would be some way to add this effect (using small textures) to some terrain specified by vertices rather than making a very large image to match whatever is seen in the level.

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  • Broken Gnome panel after Ubuntu Update

    - by Asaf
    Like every single update on Ubuntu system, my graphical system is completely broken after updating to version 11.10 http://i.imgur.com/YIHfA.png As shown in the image, the date is in the middle of the panel, There are many icons missing (network connection icon, skype) There's no right click menu when I try to right click on the panel and many programs don't have their menus (file,edit,view... those things). How do I fix this? I have gnome-panel, I don't want Unity and I'd rather install windows 95 before I switch to it.

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  • distribution update made my close/minimize/maximize window buttons diappear

    - by Marc Sauvageau
    I am running an ubuntu/gnome3 environment. While running the upgrade manager on 12.04, I was informed that there was a distribution update but that it was partial. (whatever that means) After a few failed attempts at updating through the manager, I decide to run sudo apt-get update && sudo apt-get update. The updates seem to work however, the close/maximize/minimize buttons of all windows have disappeared. I also can no longer use the Alt+Tab function. I tried to post an image but I need more rep (sorry) I have tried to run the updates again but nothing changes. I'm still very new at this. I would appreciate it if you could use simple terms to describe or ask questions. Thanks in advance!

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  • Cannot boot from live cd

    - by Sam
    I have a Hcl notebook P38 PDC, the hard disk is completely blank. I tried installing Ubuntu 11.04 as a .iso image from a cd but it did not boot. Later I tried installing it from USB using UNetbootin and also Universal USB installer but both in vain. Can someone please tell me what wrong am I doing or what else needs to be done. I am using a Toshiba pen drive 4Gb. I tried booting from the rescue mode but again had the same problem. Would be great if someone helps me out ASAP. Thank you( for reading as well as for helping).

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  • How to Banish Duplicate Photos with VisiPic

    - by Jason Fitzpatrick
    You meant well, you intended to be a good file custodian, but somewhere along the way things got out of hand and you’ve got duplicate photos galore. Don’t be afraid to delete them and lose important photos, read on as we show you how to clean safely. Deleting duplicate files, especially important ones like personal photos, makes a lot of people quite anxious (and rightfully so). Nobody wants to be the one to realize that they deleted all the photos of their child’s first birthday party during a hard drive purge gone wrong. In this tutorial we’re going to show you how to go beyond the limited reach of  tools which simply compare file names and file sizes. Instead we’ll be using a program that combines that kind of comparison with actual image analysis to help you weed out not just perfect 1:1 file duplicates but also those piles of resized for email images, cropped images, and other modified images that might be cluttering up your hard drive. How to Banish Duplicate Photos with VisiPic How to Make Your Laptop Choose a Wired Connection Instead of Wireless HTG Explains: What Is Two-Factor Authentication and Should I Be Using It?

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  • Microsoft Forcing Dev/Partners Hands on Win 8 Through Certification

    - by D'Arcy Lussier
    I remember 2.5 years ago when Microsoft dropped a bomb on the Microsoft Partner community: all Gold competencies would require .NET 4 based premiere certifications (MCPD). Problem was, this gave a window of about 6 months for partners to update their employees’ certifications. At the place I was working, I put together an aggressive plan and we were able to attain the certs needed. Microsoft is always open that the certification requirements will change as the industry changes. .NET 1.0 certifications are useless here in 2012, and rightfully so they’ve been retired for a long time now. But now we’re seeing a new tactic by Microsoft – shifting gears away from certifications that speak to what industry needs and more to the Windows 8 agenda. Consider that currently the premiere development certification is the Microsoft Certified Professional Developer, which comes in three flavours – Web, Windows, and Azure. All require WCF and Data Access exams, as well as one that deals with the associated base technologies (ASP.NET, WinForms/WPF, Azure), and one that ties all three together in a solution-based exam. For Microsoft-based organizations, these skills aren’t just valid but necessary in building Microsoft applications. But the MCPD is being replaced with our old friend Microsoft Certified Solutions Developer (MCSD). So far, Microsoft has only released two types of MCSD – Web and Windows Store Apps. Windows Store Apps?! In a push to move developers to create WinRT-based applications, desktop development is now considered a second-class citizen in the eyes of Redmond. Also interesting are the language options for the exams: HTML5 and C#. Sorry VB folks, its time to embrace curly braces whether they be JavaScript or C#. Consider too the skills being assessed for the Windows Store Apps: Get your MCSD: Windows Store Apps Using HTML5 Get your MCSD: Windows Store Apps Using C# *Image Source: http://www.microsoft.com/learning/en/us/certification/mcsd-windows-store-apps.aspx Nov 21/2012 If you look at the skills being tested in each exam, you’ll find that skills like WCF and Data Access are downplayed compared to things like integrating Charms, facilitating Search, programming for the microphone and camera – all very Windows 8 focussed items. Where this becomes maddening is that Microsoft is still pushing Windows 7 with enterprise clients. According to a ZDNet article, Microsoft wants to see Windows 7 on 70% of enterprise desktops by mid 2013. Assuming they somehow meet that (its a pretty lofty goal), there’s years of traditional desktop-based development that will still be required at some level. For those thinking they’ll just write and stick with the MCPD certification, note that most exams that go towards that certification will be retired at the end of July 2013! (Read the small print). And while details haven’t been finalized, its a safe bet that MCPD certifications eventually won’t count towards Gold-level competencies in the Microsoft Partner program. What this means for Microsoft Partners and Developers is that certification for desktop development is going to be limited to Windows Store Apps unless Microsoft re-introduces a traditional desktop (WPF) based MCSD cert. Web Application Development – It’s Not All Bad There’s big changes on the web side of certification, but I actually see these changes as being for the good! Check out the new exam requirements for MCSD – Web Applications: Get your MCSD: Web Applications certification *Image Source: http://www.microsoft.com/learning/en/us/certification/cert-mcsd-web-applications.aspx Nov 21, 2012 We now *start* with HTML5, JavaScript, and CSS3! Now I’m sure that these will be slanted towards web development in IE, and I can hear designers everywhere bemoaning the CSS/IE combination. Still, I applaud Microsoft for adopting HTML5 as the go-to web technology and requiring certified developers to prove they have skills in the basics of web dev. The fact that the second exam clearly states “MVC Web Applications” shows that Web Forms is truly legacy and deprecated. That’s not to say there aren’t those out there that are still supporting or (for whatever reason) doing new dev with Web Forms, but this move by Microsoft is telling the community they better get on the MVC bandwagon if they want to stay current. Fantastic! And of course Azure needs to be here as well, and this is where the Microsoft agenda fits in. It’s no secret that there’s been a huge push in getting developers on to Azure. I don’t see this as being a bad thing either, as cloud computing (whether Azure, private, or 3rd party) is a necessary skill for developers to have here in 2012. The cynic in me realizes that the HTML5/JavaScript/CSS push wouldn’t be as prominent though if not for the Windows 8 Store App play, where HTML5 is a first class citizen (and an available language for the MCSD Windows Store App cert). In this case, the desktop developers loss is the web developers gain. Get Ready for Changes In addition to the changes in certifications, the Microsoft Partner competencies are going through changes as well. Web and Software Development are being merged into a single competency, meaning that licenses you would have received from having both as Gold are reduced. Other competencies are either being removed or changed, as are the exam requirements. In the same way that we’re seeing faster release cycles from Microsoft, so too will we see the Microsoft Partner Program and MS Certifications evolve faster than ever before. Many of us got caught in the last wave of changes, but this time we can see the wave coming – and it looks pretty big!

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  • Wrapping up an Exciting Mobile World Congress

    - by Jacob Lehrbaum
    Its been a busy week here in Barcelona, with noticeably more energy at the show than in 2010. This year, we decided to move the Java booth to the App Planet and really engage with the increasing number of developers that are attending the event. Our booth featured 10 demos and a series of nearly 25 workshops featuring a variety of topics ranging from information about Java Verified, to the use of web technologies with Java ME, to sessions hosted by Operators such as Orange and Telefonica (see image to the left).One of the more popular topics in our booth was the use of Java in the Smart Grid. In our booth we were showing off some of the work of the Hydra Consortium whose goal it is to leverage the emerging smart grid infrastructure to securely enable the delivery of personal health data (weight, blood pressure, etc) from the home to your doctor. If you'd like to learn more about this innovative project, you can watch a video that was filmed at the event featuring Charles Palmer of Onzo. If you'd like to learn more about Java in the Smart Grid, check out our on-demand webinar

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  • iOS persistant storage with update function

    - by jernej
    im developing a game which has different levels and i need to store all levels and its elements (position, image, sounds,..) into a file/database. The levels will be updated so i need a function that checks online for a update and downloads a database dump and additional files. I was planing to store all the persistent data into a SQLLite database, but not quite sure how to do the update part - to pack the database dump and the files together (in a .zip or with a xml). Can this be done any other way (as secure as possible)? thanks!

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  • Multiple textures on a mesh created in blender and imported in xna

    - by alecnash
    I created a cube in blender which has multiple images applied to its faces. I am trying to import the model into xna and get the same results as shown when rendering the model in blender. I go through every mesh (for the cube its only one) and through every part but only the first image used in blender is displayed in every face. The code I am using to fetch the texture looks like that: foreach (ModelMesh m in model.Meshes) { foreach (Effect e in m.Effects) { foreach (var part in m.MeshParts) { e.CurrentTechnique = e.Techniques["Lambert"]; e.Parameters["view"].SetValue(camera.viewMatrix); e.Parameters["projection"].SetValue(camera.projectionMatrix); e.Parameters["colorMap"].SetValue(modelTextures[part.GetHashCode()]); } } m.Draw(); } Am I missing something?

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