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• Sound Waves Visualized with a Chladni Plate and Colored Sand [Video]

  - by Jason Fitzpatrick

  This eye catching demonstration combines a Chladni Plate, four piles of colored sand, and a rubber mallet to great effect–watch as the plate vibrates pattern after pattern into the sand. A Chladni Plate, named after physicist Ernst Chladni, is a steel plate that vibrates when rubbed with a rubber ball-style mallet. Different size balls create different frequencies and each frequency creates a different pattern in the sand placed atop the plate. Watch the video above to see how rubber balls, large and small, change the patterns. [via Neatorama] Secure Yourself by Using Two-Step Verification on These 16 Web Services How to Fix a Stuck Pixel on an LCD Monitor How to Factory Reset Your Android Phone or Tablet When It Won’t Boot

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• SQLRally Nordic and SQLRally Amsterdam: Wrap Up and Demos

  - by Adam Machanic

  First and foremost : Huge thanks, and huge apologies, to everyone who attended my sessions at these events. I promised to post materials last week, and there is no good excuse for tardiness. My dog did not eat my computer. I don't have a dog. And if I did, she would far prefer a nice rib eye to a hard chunk of plastic. Now, on to the purpose of this post... Last week I was lucky enough to have a first visit to each of two amazing cities, Stockholm and Amsterdam. Both cities, as mentioned previously...(read more)

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• How to make a battle system in a mobile indie game more fun and engaging

  - by Matt Beckman

  I'm developing an indie game for mobile platforms, and part of the game involves a PvP battle system (where the target player is passive). My vision is simple: the active player can select a weapon/item, then attack/use, and display the calculated outcome. I have a concept for battle modifiers that affect stats to make it more interesting, but I'm not convinced the vision is complete. I've received some inspiration from the game engine that powers Modern War/Kingdom Age/Crime City, but I want more control to make it more fun. In those games, you don't have the option to select weapons or use items, and the "battling" screen is simply 3D eye candy. Since this will be an indie game, I won't be spending $$$ on a team of professional 3D artists/animators, so my edge needs to be different. How would you make a battle system like this more fun and engaging?

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• Creating a python android application

  - by Harry

  I need help creating a android app on python. I'm creating an actual android game on python to use on my phone. I need suggestions of what app people would prefer. Anything you have have always wanted on your phone but no ones made it? Please post some suggestions below. I will start writing the code soon and will keep updating this post or creating a new ones asking new questions, so please keep an eye out. I also need help and software on how to start writing the code and how to test it. Thanks in advance.

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• Solid principles vs YAGNI

  - by KeesDijk

  When do the SOLID principles become YAGNI. As programmers we make trade-off's all the time, between complexity, maintainabillity, time to build and so forth.Amongst others. two of the smartest guidelines for making choices are in my mind the SOLID principles and YAGNI. If you don't need it, dont build it and keep it clean. Now for example when i watch the dimecast series on SOLID I see it start out as a fairly simple programm and ending up prettty complex (end yes complexity is also in the eye of the beholder) but it still makes me wonder, when do SOLID principles turn into something you don't need. All solid principles are ways of working that enable use te make changes at a later stage. But what if the problem to solve is a pretty simple one and it's a through away application, than what ? Or are the SOLID principles something that apply always ?

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• Avatar (spoiler alert!)

  - by Dave Yasko

  This past weekend we finally saw “Avatar,” or as I like to call it “Dances with Smurfs.”  It was rather light on the story, heavy on the message, and incredibly well done.  The eye for detail is what blew me away, especially the visual distortion (presumably due to density) when the two atmospheres mixed.  The only thing I thought they might have missed was why so many (presumably) mammals had 6 appendages (4 arms + 2 legs) and breathed through passages near their clavicles, but the Na’vi (sp?) didn’t have/do either.  Also, James Cameron just loves to telegraph upcoming events: Riding the big red bird thing has only happened 5 times before – Sully is on the job.  The tree is going to download dying Ripley to her avatar body – Sully is going to do that too.  I’ve seen worse foreshadowing, but not in a long time. I give it 4 Papa Smurfs out of 5.

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• Craftsmanship Tour Day 0: New York

  - by Liam McLennan

  Arriving at JFK, at dawn, is beautiful. From above 1,000ft I can see no crime, poverty or ugliness – just the dark orange sunrise-through-smog. The Atlantic appears calm, and I take that as a good sign. Today is the first day of my software craftsmanship tour. I will be visiting three of the shining lights of the software industry over five days, exchanging ideas and learning. Arriving on the red eye from Seattle I feel like hell. My lips, not used to the dry air, are cracked and bleeding. I get changed in the JFK restroom and make my way from the airport. Following Rik’s directions I take the airtrain to Jamaica. Rik is an engineering manager at Didit in Long Island, the first stop on my tour. From Jamaica I take the Long Island Rail Road train to Rockville Centre, home of Didit.

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• RPi and Java Embedded GPIO: Sensor Hardware for Java Enabled Interface

  - by hinkmond

  Now here's the hardware you'll need to make a Java app interface with a static charge sensor connected to your Raspberry Pi via the GPIO port. It means another Fry's run of course. That's not too bad during Christmas since you can browse all the gadget and toys while doing your shopping for sensor hardware for your RPi. Here's a your shopping list: 1 - NTE312 JFET N-channel transistor (this is in place of the MPF-102) 1 - Set of Jumper Wires 1 - LED 1 - 300 ohm resistor 1 - set of header pins Grab all that from Fry's or your local hobby electronics shop and come back here for how to connect it together. Oh, and don't go too crazy buying all the other electronic toys and gadgets that catch your eye because of the holiday displays at the store. Hinkmond

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• Processing Binary Data in SOA Suite 11g

  - by Ramkumar Menon

  SOA Suite 11g provides a variety of ways to exchange binary data amongst applications and endpoints. The illustration below is a bird's-eye view of all the features in SOA Suite to facilitate such exchanges. Handling Binary data in SOA Suite 11g Composites Samples and Step-by-Step Tutorials A few step-by-step tutorials have been uploaded to java.net that illustrate key concepts related to Binary content handling within SOA composites. Each sample consists of a fully built composite project that can be deployed and tested, together with a Readme doc with screenshots to build the project from scratch. Binary Content Handling within File Adapter Samples [Opaque, Streaming, Attachments] SOAP with Attachments [SwA] Sample MTOM Sample Mediator Pass-through for attachments Sample For detailed information on binary content and large document handling within SOA Suite, refer to Chapter 42 of the SOA Suite Developer's Guide. Handling Binary data in Oracle B2B The following diagram illustrates how Oracle B2B facilitates exchange of binary documents between SOA Suite and Trading Partners.

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• How would you explain that software engineering is more specialized than other engineering fields?

  - by Spencer K

  I work with someone who insists that any good software engineer can develop in any software technology, and experience in a particular technology doesn't matter to building good software. His analogy was that you don't have to have knowledge of the product being built to know how to build an assembly line that manufactures said product. In a way it's a compliment to be viewed with an eye such that "if you're good, you're good at everything", but in a way it also trivializes the profession, as in "Codemonkey, go sling code". Without experience in certain software frameworks, you can get in trouble fast, and that's important. I tried explaining this, but he didn't buy it. Any different views or thoughts on this to help explain that my experience in one thing, doesn't translate to all things?

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• Three Hidden Extensibility Gems in ASP.NET 4

  ASP.NET 4 introduces a few new extensibility APIs that live the hermit lifestyle away from the public eye. Theyre not exactly hidden - they are well documented on MSDN - but they arent well publicized. Its about time we shine a spotlight on them. PreApplicationStartMethodAttribute This new attribute allows you to have code run way early in the ASP.NET pipeline as an application starts up. I mean way early, even before Application_Start. This happens to also be before code in your App_code folder...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• For normal mapping, why can we not simply add the tangent normal to the surface normal?

  - by sebf

  I am looking at implementing bump mapping (which in all implementations I have seen is really normal mapping), and so far all I have read says that to do this, we create a matrix to convert from world-space to tangent-space, in order to transform the lights and eye direction vectors into tangent space, so that the vectors from the normal map may be used directly in place of those passed through from the vertex shader. What I do not understand though, is why we cannot just use the normalised sum of the sampled-normal vector, and the surface-normal? (assuming we already transform and pass through the surface normal for the existing lighting functions) Take the diagram below; the normal is simply the deviation from the 'reference normal' for any given coordinate system, correct? And transforming the surface normal of a mapped surface from world space to tangent space makes it equivalent to the tangent space 'reference normal', no? If so, why do we transform all lighting vectors into tangent space, instead of simply transforming the sampled tangent once in the pixel shader?

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• Editor's Notebook: Of Slobber Pots and Flux Capacitors

  - by user462779

  Just wrapping up the contents of the November 2012 issue of Profit... I found this snippet of an interview I did with Team Oracle mechanics Clyde Greene and Chad Colberg when I was in Gary, IN this summer working on a photo shoot about Team Oracle for the current issue. We were standing around in a hangar as the Team prepared for the Chicago Air and Water Show, chatting about the engineering and design of the Oracle Challenger III aerobatic plane. Pick up a copy of Profit's November 2012 and read what Team Oracle pilot Sean D. Tucker has to say about the Oracle Challenger III and get a closer look at the plane. I'll drop a link into this blog entry as soon as the story is available. Your editor, greasy and stooped after a red eye flight, talks with Sean D. Tucker about stunt flying.

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• Tutorial (or livedisk) for multiseat setup with dual-head display supporting openGL direct rendering?

  - by Tobias Kienzler

  I'm currently running Ubuntu 10.10 (64 bit), the GPU is an ATI Radeon HD 4290 onboard a ASUS M4A89GTD PRO/USB3 mainboard. The Ubuntu wiki doesn't cover 10.10 yet and I also don't know if that method would support direct rendering. I heard mentions of xephyr and xgl, what are the differences? Where should I start? I tried the mdm livedisk but that doesn't boot. I'm also willing to try a different distribution if necessary. Edit: 1 Will the HowTo: A well performing, full eye-candy, accelerated pseudo-multiseat setup on a single dualhead GPU. for Ubuntu 9.04 still work? I'm afraid it omits how to setup two input devices and sound however... Edit: 2 http://multiseatonlinux.blogspot.com/2010/06/part-1-setting-up-base.html covers 10.10 but requires pinning gdm. Is that circumvenatable? Also how does that setup have to be modified for dual-head?

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• Oracle 11g Webcast Series 2

  - by Alex Blyth

  Hi allIve just updated the schedule for the second series (season?) of the Oracle DB 11g Webcasts we've been running over the past few months. We've paced ourselves a bit better this time round and are looking to touch on some core functionality, but also some non-database topics like Oracle VM & Linux and Data replication using Golden Gate and Oracle Data Integrator (ODI).As with the last series, we're running these sessions on Wednesdays at 1.30pm Australian Eastern Standard Time and barring any hiccups they will be recorded and made available for playback.Keep an eye out here and on the schedule page for more details. The first session is next week - 14th April - covering Upgrading to Oracle 11g.CheersAlex

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• Homebrewed Headphone Amp Shows Off DIY Resin Casting Process

  - by Jason Fitzpatrick

  Although the guts of this DIY build are worth checking out in their own right, what really caught our eye was the beautiful resin cast case surrounding the build as it’s something that could be adapted to a wide variety of projects. Over at the electronics blog Runaway Brainz they were looking for a slick way to encase an amp project. Rather than go with a project box or similar construction, they did a resin pour and then sanded and polished the resulting encasement. The results are stunning and turn the electronic guts of the amp into a work of art. Freeform Headphone Amp [via Make] How to Stress Test the Hard Drives in Your PC or Server How To Customize Your Android Lock Screen with WidgetLocker The Best Free Portable Apps for Your Flash Drive Toolkit

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• Dropbox Doubling the Storage of Their Pro Accounts Tonight Free of Charge

  - by Jason Fitzpatrick

  If you’re a Dropbox Pro user (or have been contemplating getting a Dropbox Pro account) today is your lucky day. Dropbox has overhauled their pricing structure, effectively doubling the storage capacity of their Pro account with nary a price increase in sight. Starting later today (keep an eye on the Dropbox Plans page for the change) the Pro 50GB and 100GB plans will shift to Pro 100GB and 200GB plans, doubling the amount of storage users enjoy without an increase in price. Hit up the link below for more info. New Dropbox Plans! [The Dropbox Blog] How to Play Classic Arcade Games On Your PC How to Use an Xbox 360 Controller On Your Windows PC Download the Official How-To Geek Trivia App for Windows 8

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• Can I remove "Free space" text from the Nautilus status bar?

  - by DisgruntledGoat

  I want to remove the part in Nautilus that shows free disk space. In theory it may useful but it's so badly designed, every time I select some files my eye gets drawn to "15 GB" instead of the actual size of the files. And with no files selected, it says something like "24 items, Free space 15GB" which at a quick glance looks like the total size of the files. I've looked through the preferences and don't see anything. I'm using Ubuntu 10.10 with Nautilus 2.32.0.

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• Solid principles vs YAGNI

  - by KeesDijk

  When do the SOLID principles become YAGNI? As programmers we make trade-offs all the time, between complexity, maintainability, time to build and so forth. Amongst others, two of the smartest guidelines for making choices are in my mind the SOLID principles and YAGNI. If you don't need it; don't build it, and keep it clean. Now for example, when I watch the dimecast series on SOLID, I see it starts out as a fairly simple program, and ends up as a pretty complex one (end yes complexity is also in the eye of the beholder), but it still makes me wonder: when do SOLID principles turn into something you don't need? All solid principles are ways of working that enable use to make changes at a later stage. But what if the problem to solve is a pretty simple one and it's a throwaway application, then what? Or are the SOLID principles something that always apply? As asked in the comments: Solid Principles YAGNI

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• How to enable SSIS as data source type on SQL Server Reporing Services SSRS 2008 R2

  when you create a data source in SSRS 2008 R2 (Nov CTP), you won't be able to get SSIS listed as a data source type. Therefore applications that are already using it as a data source or applications that require it as a data source get stuck. Let's learn how to enable and get SSIS listed back as a data source in SSRS 2008 R2. SQL Server monitoring made easy "Keeping an eye on our many SQL Server instances is much easier with SQL Response." Mike Lile.Download a free trial of SQL Response now.

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• PDF Converter Elite Giveaway Winners

  - by Gopinath

  On 25th Feb we launched the first ever giveaway of PDF Converter Elite for Tech Dreams viewers and thanks for everyone who participated in the content. We are happy to see good response from our viewers and special thanks to all those who shared our stories on Facebook and Twitter.  Here are the lucky winners Avikchatterjee   (@Indranil49) John Bax      (@JohnB98832757) MohammadWasiullah     (@mohammadwasi786) Salini Banarjee    (facebook profile) Owen     (@owenjrgordon) malkhaz    (@william_of_pale) Sidd         (@siddxxxx) John D    (@djohn300) Ankitr    (Facebook profile) Congratulations to all. Keep an eye on your twitter and facebook accounts, today we are going to send you free licenses.

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• How can I make the draggable window border thicker, without changing the appearance?

  - by Bruce Connor

  When you want to resize a window in gnome (as well as in other systems) you can click-and-hold at the window's border and than drag it. The problem is (and do correct me if I'm wrong here) that the draggable border is just a couple of pixels thick in gnome. That tends to be a little frustrating, and contributes to my wrist pains from using the mouse, as it requires very careful movement of the mouse. How can I change the thickness of the area I can click in order to resize a window? I don't want to increase the appearance of the window border, I'm not talking about eye candy here. I want to fine tune this functionality where I can resize a window by dragging its border. Is there a setting somewhere that will change this?

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• 2010 SQLPeople Person of the Year

  - by andyleonard

  Introduction Back in 2010, I started recognizing the SQLPeople Person of the Year. It's been a tradition ever since. "But Andy, you're writing this in 2010." Yep. Good eye, Pep. The Award Goes To: Steve Jones ( Blog | @way0utwest ). I am not a DBA - I'm a database developer. I joke and say I look like the world's greatest DBA when there's no contention, the jobs are finishing successfully, queries return data quickly and accurately, and the backups succeed. But anyone looks like the world's greatest...(read more)

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• Custom Silent HTPC Uses Entire Case as a Heatsink

  - by Jason Fitzpatrick

  This silent media center PC dissipates heat in a rather clever way; the entire back of the case is one giant heatsink. Courtesy of computer enthusiast and tinker DeFex, the build isn’t just silent but quite eye catching too. He used a combination of one massive heatsink, custom brackets, acrylic, and bicycle spokes to create a sleek case that looks as much like a computer-inspired work of art as it does a media center computer. Hit up the link below to check out the build gallery and see how he mated the CPU to the heatsink-body with a custom milled aluminum bridge. Heatsink HTPC [via Hack A Day] Secure Yourself by Using Two-Step Verification on These 16 Web Services How to Fix a Stuck Pixel on an LCD Monitor How to Factory Reset Your Android Phone or Tablet When It Won’t Boot

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• Google I/O 2010 - Bringing Google to your site

  Google I/O 2010 - Bringing Google to your site Google I/O 2010 - Bringing Google to your site Google APIs 101 DeWitt Clinton, Jeff Scudder This is an overview session about some of the many ways that a developer can enrich their site and more fully engage their visitors using Google products. We will cover a variety of products and APIs designed to quickly and easily improve and monetize your site, from AdSense and Custom Search to Feeds and Web Elements. We'll include announcements for several eye-popping new features. For all I/O 2010 sessions, please go to code.google.com From: GoogleDevelopers Views: 8 0 ratings Time: 57:26 More in Science & Technology

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