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• Problems after installing a plethora of updates

  - by box

  yesterday I decided to install 32-bit Ubuntu on my 64-bit desktop, first of all, is that a problem? After installing, i had around 270 updates to install, according to the update manager. I was having trouble launching a game with WINE, so I thought updating might help. After updating, I restarted my computer, and after a long while it showed me my desktop and the icon's on it, but I didn't get anything else. I didn't have the "taskbar" (not sure what it's called, sue me) on the left side, nor the bar at the top. I also received an error message saying some program had stopped working. I decided to restart my computer again, and that was when it told me that i have to re-configure my drivers, or run in "Low Graphics" mode for one session, amongst other options. Well, I decided to try to revert to the "basic video drivers", which was an option it gave. Restarting the computer gave me the same problem as in the second paragraph. After a few more restarts and a night of restless sleep, here I am trying to start my computer again, only to receive a black screen, and my monitor "going to sleep". I'm sort of stumped here, being new to Ubuntu (desktop, at least) and I really hope this gets fixed without me having to install Ubuntu on yet another partition (I have three other partitions for various things already) tl;dr: Black screen on boot after installing updates.

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• Beta Period Closed for "Java EE 6 JavaServer Faces Developer Certified Expert Exam" Certification Exam (1Z1-896)

  - by Brandye Barrington

  The beta period is closed for Java EE 6 JavaServer Faces Developer Certified Expert Exam (Exam 1Z1-896), and registration is now open for the production version of the exam. Passing this exam leads to the Oracle Certified Expert, Java EE 6 JavaServer Faces Developer certification. Earning a JavaServer Faces certification can help you deliver lower cost and faster time to market by allowing the experienced Java developer to take the web page from conception to delivery, removing the need for multiple collaboration with web designers and developers. With the range of products built on JSF, developing an expertise through certification on this technology can open the door to a variety of opportunities and give you an edge over your peers. This certification is also a valuable addition to your existing Java EE 5 and EE 6 certifications, increasing your marketable skills and solidifying your credibility. While training is not required for certification, the Java EE 6: Develop Web Applications with JSF course from Oracle University, can expedite you towards your certification. Visit pearsonvue.com/oracle and register for exam 1Z0-896. You can get all preparation details, including exam objectives, number of questions, time allotments, and pricing on the Oracle Certification website. QUICK LINKS: Certification Track: Oracle Certified Expert, Java EE 6 JavaServer Faces Developer Certification Exam: Java EE 6 JavaServer Faces Developer Certified Expert Exam (1Z1-896) Recommended Training: Java EE 6: Develop Web Applications with JSF Certification Website: About Beta Exams Register Now: Pearson VUE

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• Directx vs XNA - Which is better for me? [closed]

  - by tristo

  Recently I got Visual Studio 2012 from visual studio 2010, although did not expect Visual Studio to 2012 to designed the way it was. Anyway I am pleased with some of VS 2012 technology and have moved all of my projects to it. At this point of time since I got VS 2012 I have been into making windows applications and other non-game activities. ALTHOUGH have recently gotten into the spirit of game development and I am planning to make a 3d comical game, shader effects, not too complicated meshes, but it requires alot of lighting effects to emphasise certain parts of the game. When I was using VS 2010 I had a great time making 2d games with XNA, it uses a great language, and has a very awesome system. But I no longer have XNA with me, and the workarounds described in stackoverflow always gives me errors while using xna. Anyway it seems that microsoft have stuffed themselves up with xna anyway with the weirdness of Windows 8, and it being only avaliabe on pc and xbox. Due to these reasons I have decided to work with Directx and Direct3d to produce my new game, although the overflowing credits after each directx game gives me the shivers, and the low-level coding of directx also puts me on thin ice with my games, left in a confusional mess with what decision I should make. I don't know anything about directx or direct3d. I am an indie developer, but I am planning to take on alot of professional aspects of games. I don't have heaps of time(2-3 hours a day) I don't mind the complexity of how directx works, as long as I can learn how to make the fundementals of a game in a week. I am also unsure if directx is really for my situation, and keep with xna game development. Anyone can tell me the best technology for me would be great.

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• Is there a product planning tool that has these specific features? [closed]

  - by acjohnson55

  I am working on a web startup in the early stages, and we are struggling a bit to manage the scope and scheduling of our product. We have loads of high-level features in the pipeline, but we need a good way of scheduling them for release iterations and breaking them into actual tasks that can be scheduled (that could be a separate tool, but integration would be preferred). I would say that our product can be pretty cleanly divided into "aspects", and we want to be able to separate features by the aspect to which they apply. Perhaps most importantly, it should be really simple to create and move features between target release points. We don't have physical space for a war room type setup, so whatever we settle upon should ideally have a cloud-type web interface. Right now, we're using Excel to make a grid of product aspects vs. target releases, and we store features at the intersections. But this is not providing a good way of indexing tasks to those features or being able to move them around. I would much rather have something that automates the grid overview. I'm less interested in something that helps with low-level scheduling than I am in something that is good at organizing the product plan at the long-term, high-level view. Is there a product planning tool out there that matches these specifications?

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• How much information can you mine out of a name?

  - by Finglas Fjorn

  While not directly related to programming, I figured that the programmers on here would be just as curious as I was about this question. Feel free to close the question if it does not meet with the guidelines. A name: first, possibly a middle, and surname. I'm curious about how much information you can mine out of a name, using publicly available datasets. I know that you can get the following with anywhere between a low-high probability (depending on the input) using US census data: 1) Gender. 2) Race. Facebook for instance, used exactly that to find out, with a decent level of accuracy, the racial distribution of users of their site (https://www.facebook.com/note.php?note_id=205925658858). What else can be mined? I'm not looking for anything specific, this is a very open-ended question to assuage my curiousity. My examples are US specific, so we'll assume that the name is the name of someone located in the US; but, if someone knows of publicly available datasets for other countries, I'm more than open to them too. I hope this is an interesting question!

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• How to fix Black screen?

  - by stupidwhiteguy

  so I recently had my question deleted and merged into a standard how to for blank screens. I am relatively new to This type of computer work and i don't understand the steps nessary to diagnose my problem well enough to solve it so this help full how to has me feeling helpless I can use Ctrl + Alt +F1 and log in So how do I use sudo commands to fix the blank screen on my old dell? sudo lsoci -nn tells me my video card is a ATI rage 128 pro ultra tf /var/log/Xorg.0.log tells me Permission denied that is all i get Sudo apt-get install --reinstall unity tried thay also have also tried Apt-get update and upgrade Please dont close this question without providing an actual answer or if you think it is an exact duplicate provide a solution that worked for that question. I see a lot of these questions as closed and there is no real answer given I will try any solutions available and report results so that others can also solve problems not be overwhelmed by overly broad troubleshooting guides that do nothing to help solve specific issues The nomodeset change from quiet splash also yields no results on reboot I still get a blank screen this screen still has contorl alt f1 abilities but that is it contorl alt f8 causes blinking cursor and F7 gets a crazy flash with green and blue then blank screen Contorl alt f1 a log in prompt in text only when run in recovery mode with failsafe graphics its says the syestem is running in low graphics mode your screen graphics card and input device settings could not be detected correctly. You will need to configure these your self how do i do that? I got this /var/log/failsafeX-backup-120909200641.tar as the location of my log files but i have no idea how to axcess sounds work in blank screen also screen responds or flashes after log in is typed and password entered really any help is good I don't even know where to start I believe 12.04 is installed and functioning but i don't think I can see it at the end of the error log it says error setting mtrr (base= oxf0000000, size= 0x01000000, type=1) inappropriate ioctl for device(25) i have tried to provide as much info as I understand how to provide

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• Cheap ways to do scaling ops in shader?

  - by Nick Wiggill

  I've got an extensive world terrain that uses vec3 for the vertex position attribute. That's good, because the terrain has endless gradations due to the use of floating point. But I'm thinking about how to reduce the amount of data uploaded to the GPU. For my terrain, which uses discrete / grid-based vertex positions in x and z, it's pretty clear that I can replace my vec3s (floats, really) with shorts, halving the per-vertex position attribute cost from 12 bytes each to 6 bytes. Considering I've got little enough other vertex data, and an enormous amount of terrain data to push into the world, it's a major gain. Currently in my code, one unit in GLSL shaders is equal to 1m in the world. I like that scale. If I move over to using shorts, though, I won't be able to use the same scale, as I would then have a very blocky world where every step in height is an entire metre. So I see these potential solutions to scale the positional data correctly once it arrives at the vertex shader stage: Use 10:1 scaling, i.e. 1 short unit = 1 decimetre in CPU-side code. Do a division by 10 in the vertex shader to scale incoming decimetre values back to metres. Arbirary (non-PoT) divisions tend to be slow, however. Use (some-power-of-two):1 scaling (eg. 8:1), which enables the use of a bitshift (eg. val >> 3) to do the division... not sure how performant this is in shaders, though. Not as intuitive to read values, but possibly quite a bit faster than div by a non-PoT value. Use a texture as lookup table. I've heard that this is really fast. Or whatever solutions others can offer to achieve the same results -- minimal vertex data with sensible scaling.

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• Help w/ iPad 1 performance for tile-based DOM Javascript game

  - by butr0s

  I've made a 2D tile-based game with DOM/Javascript. For each level, the map data is loaded and parsed, then lots of tiles ( elements) are drawn onto a larger "map" element. The map is inside of a container that hides overflow, so I can move the map element around by positioning it absolutely. Works a treat on desktop browsers, and my iPad 2. My problem is that performance is really bad on iPad 1. The performance hit is directly related to all the tile elements in my map, because when I remove or reduce the number of tiles drawn, performance improves. Optimizing my collision detection loop has no effect. My first thought was to batch groups of tiles into containers, then hide/show them based on proximity to the player, however this still causes a huge hiccup when the player moves and a new group of tiles is displayed (offscreen). Actually removing the out-of-sight elements from the DOM, then re-adding them as necessary is no faster. Anyone know of any tips that might speed up DOM performance here? My map is 1920 x 1920 pixels, so as far as I know should be within the WebKit texture limit on iOS 5/iPad. The map is being moved with CSS3 transforms, and I've picked all the other obvious low-hanging fruit.

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• How well do graduates from top universities perform and how does it feel compare to the rest of the world?

  - by Amumu

  I always have impressions to those who got admitted into top Universities like MIT, Standford... for studying Engineering. I don't actually know what they are doing in the University or what they will do, but I always feel they can perform higher level tasks with more complexities. I always think that they are good at create and applying mathematical model in real life and I tend to agree: If you can't apply math, it's your problems, not math. I am a junior software engineer on embedded devices. I am learning more on Linux kernel and low level stuffs. Even so, my will is not strong enough to pursue technical path forever, with a final purpose is to create something significant on my own. May I have a chance to get on their level if I keep learning through experience and self-study? In my opinion, Math is the must have requirement, since it seems that programs on those Universities are very Math oriented. Without very strong math skill, how can one perform good in science and researching beyond making regular business products?

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• Differentiating between user script input formats

  - by KChaloux

  I have a .NET project at work that provides a couple of (Iron)Python scripts to the customers, to allow them to customize the output of the program. The application generates code for certain machines, and supports a couple of different formats. Until recently, we only provided a script for one format. We're expanding upon that to include support for the others. If the user is using a script, they select their input script before generating the output code. A script designed for Format1 output is going to cause errors if they're trying to generate Format2 output. I need to deal with this. One option would just be to let the customers use common sense, and if they load the wrong script it will just fail, or worse, produce inaccurate data. I'm inclined to provide a little more protection than that. At the moment I'm considering putting a shebang-style comment line at the top of the script, ala: # OUTPUT - Format1 If the user tries to run a Format2 process with a Format1 script, it will warn them. Alternatively I could create different file extensions for the input scripts that vary by type. The file-type comment approach helps prevent the script from actually loading improperly, at the cost of failing to warn the user until they've already selected it, via a dialog box. Using different file extensions would allow me to cut down on visual clutter when providing a File Dialog, but doesn't actually stop them from loading the wrong script. So I'm really not sure if the right approach is to just leave it alone, or provide some safeguards.

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• Basic Puppet installation with Solaris 11.2 beta

  - by user13366125

  At the recent announcement we talked a lot about the Puppet integration. But how do you set it up? I want to show this in this blog entry. However this example i'm using is even useful in practice. Due to the extremely low overhead of zones i'm frequently seeing really large numbers of zones on a single system. Changing /etc/hosts or changing an SMF service property on 3 systems is not that hard. Doing it on a system with 500 zones is ... let say it diplomatic ... a job you give to someone you want to punish. Puppet can help in this case making of managing the configuration and to ease the distribution. You describe the changes you want to make in a file or set of file called manifest in the Puppet world and then roll them out to your servers, no matter if they are virtual or physical. A warning at first: Puppet is a really,really vast topic. This article is really basic and it doesn't goes more than just even toe's deep into the possibilities and capabilities of Puppet. It doesn't try to explain Puppet ... just how you get it up and running and do basic tests. There are many good books on Puppet. Please read one of them, and the concepts and the example will get much clearer immediately. (more)

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• Lots of Internet browsing issues, all browsers

  - by dario_ramos

  Before the upgrade, everything was working fine. Now, however, I can connect to the Internet but a lot of stuff fails, and the weirdest thing is that it happens with Firefox, Chromium and Opera. Some of the things that fail: I can't log in to Stack Overflow, after entering user/pass it loads for a long time on Firefox and throws Error 408 (browser request timed out) on Chromium and Opera I can't log in to Hotmail, similar symptoms I can login to Facebook, but when I try to write a comment, or just post something in my wall, it stays loading for a long time, and then fails The first two issues seem to be related to secure pages, and the second one is another issue altogether, I believe. However, they all happen with all browsers, which is really weird. Talking about weird: I connect using a Huawei SmartAX MT 810 USB modem, which cost me blood and tears to get it working under Ubuntu. I ordered an ethernet modem/router with my ISP, and I'm still waiting, but this issue intrigues me anyway. Has anyone experienced this kind of problems? I Googled around, but couldn't find a similar case.

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• Turn a Kindle into a Weather Display Station

  - by Jason Fitzpatrick

  The e-ink display, network connectivity, and low-power consumption of Kindle ebook readers make them a perfect candidate for an infrequently refreshed high-visibility display–like a weather display. Read on to see how to hack a Kindle to serve up the local weather. Tinker and hardware hacker Matt Petroff hacked his Kindle to accept input from a web server and then, graciously and in the spirit of geeky projects everywhere, shared his source code. He explains the heart of the project: The server side of the system uses shell and Python scripts to convert weather forecast data into an image for the Kindle. The scripts first download and parse forecast data from NOAA via the National Digital Forecast Database XML/SOAP Service. After parsing the data, the data then needs to be converted into an image. This is accomplished by preprocessing a specially crafted SVG file to insert temperatures, forecast symbols, and days of the week. This SVG is then rendered as a PNG using rsvg-convert and converted to a grayscale, no transparency color space as required by the Kindle using pngcrush. Finally, it is copied to a public location on the web server. The Kindle is set to refresh twice a day (you could easily tweak the scripts for a more frequent refresh) and displays the forecast as seen in the photo above–with crisp and easy to read text and icons. Hit up the link below for more information and the project’s source code. How To Create a Customized Windows 7 Installation Disc With Integrated Updates How to Get Pro Features in Windows Home Versions with Third Party Tools HTG Explains: Is ReadyBoost Worth Using?

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• Binding in the view or the controller?

  - by da_b0uncer

  I've seen 2 different approaches with MVC on the web. One, like in ExtJS, is to bind the callbacks to the view via the controller. Finding every element on the view and adding the functionallity. The other, like in angular.js and in the lift-framework server-side, too, is to bind in the views and just write the functionallity in the controller. Which is better and cleaner? The ExtJS approach has dumb views and all the logic in the controller. Which seems clean to me. I had problems with global IDs for GUI-elements or relative navigation to GUI-elements in this approach. When I changed the view, the controller couldn't find the buttons anymore or I had multiple instances of one button with the same ID on a single application, because of the global ID. But I solved this with IDs that are only global in a view and can be on the application multiple times. So I could mess with the (dumb) views layout and design and the functionallity wouldn't break. The angular.js approach with the bindings in the view don't has the problem with global IDs. Also, the person who changes something in the view layout has to know the IDs anyway, so the controller can put the data at the right spot. So if I write <a ng-click="doThis()" /> for angular.js and implement doThis() or <a lid="buttonwhichdoesthis" /> for extjs and find the element with the local id and add doThis() as handler on the controller side, seems to be not so different. The only thing is, the second one has one more layer of indirection, which seems cleaner. The first one seems somehow to cost less effort.

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• Separate collision mesh model?

  - by Menno Gouw

  I want to have another go at 3D within XNA. What I have seen from some other games that they just have a separate very low poly model "cage" around the environment model. However I can not find any reference to this. I have not that much experience with XNA 3D either. Is it possible to have this cage within each of my environmental models already? Lets just say I call the mesh within the .FBX wall and col_wall. How would I call to these different meshes within XNA? The player would just have a tight collision cube around. To make it a bit more efficient I will be making divide the map up by cubes and only calculate collision if the player is in it. Question two: I can't find anywhere to do cube vs mesh collision. Is there a method for this? Or perhaps it is possible to build my collision cage out of cubes in the 3D app and on loading of the models in XNA replace them directly by cubes? So I could just do box to box collision which should be very cheap and still give the player the ability to move over ledges on the static models.

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• Where ORMs blur the lines between code and data, how do you decide what logic should be a stored procedure, and what should be coded?

  - by PhonicUK

  Take the following pseudocode: CreateInvoiceAndCalculate(ItemsAndQuantities, DispatchAddress, User); And say CreateInvoice does the following: Create a new entry in an Invoices table belonging to the specified User to be sent to the given DispatchAddress. Create a new entry in an InvoiceItems table for each of the items in ItemsAndQuantities, storing the Item, the Quantity, and the cost of the item as of now (by looking it up from an Items table) Calculate the total amount of the invoice (ex shipping and taxes) and store it in the new Invoice row. At a glace you wouldn't be able to tell if this was a method in my applications code, or a stored procedure in the database that is being exposed as a function by the ORM. And to some extent it doesn't really matter. Now technically none of this is business logic. You're not making any decisions - just performing a calculation and creating records. However some may argue that because you are performing a calculation that affects the business (the total amount to be invoiced) that this isn't something that should be done in a stored procedure and instead should be in code. So for this specific example - why would it be more appropriate to do one or the other? And where do you draw the line? Or does it even particular matter as long as it's sufficiently well documented?

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• Majoring in computer science, but i'm not to sure I'm in the right field [closed]

  - by user74340

  Throught out my high school years and first year in college, I never thought of studying computer science. I studied biology and chemistry during my first year, and I didn't like the research, nor any type of medical professionals. So I took an introductory CS course, and loved the diverse roles this field can have. So I declare CS as my major. I finished first, and second year CS courses. Then now, I'm doing my co-op(intern) as a web developer. During my first and second year, I was always just an average student. My grades is around low B. But I put so much effort to understand my course' materials. I see many brilliants peers who not only excel at what they do, but have the passion. So I always doubt myself if I don't belong in this field. I'm not good at math, I usually get Cs on my math courses. My internship (a corporate developer job) is okay. But doesn't want to work like this after my graduation). Some aspects of CS that I like is HCI. In my experience in programming, and group projects, I enjoyed designing User interface, and thinking of user experience. I'm also thinking of taking some psychology courses.. I would appreciate any criticism, or advices.

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• Bring on the Cheer, Oracle’s Q3 is Here

  - by Kristin Rose

  November is long gone and December is near… this must mean OPN’s Q2 Winter Wrap-Up is here! Listed below are just a few of the highlights from Oracle’s past three months… Yet another successful Oracle OpenWorld 2012 and the launch of our first ever Oracle PartnerNetwork Exchange program! Get the recap. Our exciting Java Embedded @ JavaOne event. Get the low-down here! The debut of our new Oracle Cloud programs for partners, which have already created some awesome buzz in the Channel. Check out the CRN article, and don’t forget to watch the Cloud Programs Overview video and visit our OPN Cloud Knowledge Zone! On the product front, Oracle’s Sun ZFS Storage Appliance was awarded the 2012 Tech Innovator and Enterprise App Award by CRN. Read the full article. Oracle partner, Hitachi Consulting, reached OPN’s premier Diamond Level status. Read more. Was Oracle part of your September, October or November highlights? If so, leave us a comment below, we’d love to feature your story! Also, don’t forget to share the love by re-tweeting this post on Twitter or “liking” this post on Facebook! Stay Warm, The OPN Communications Team 

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• Bad Performance With Games Under Wine in Ubuntu 12.04

  - by Pandem

  I'm somewhat new to Linux. I've dabbled with it before but never more than just experimentation in a VM or dual boot where I almost always reverted back to Windows soon after (more due to a lack of commitment than a dislike for the OS). Anyway my problem is that in the two games (Guild Wars and Team Fortress 2) I've tried so far I get fairly bad performance. Despite both games having a "Platinum" rating I've still been forced to run both in DirectX 8, otherwise they either crash, have texture defects or the UI is missing. By "bad performance" I mean sub-30 FPS where there are some players and regular large framerate drops with video settings on low. Currently in my mind I believe the performance issues are just a problem with the drivers because my graphics card is a AMD 7850 which is virtually brand new and probably not properly supported yet but I'm unsure and would appreciate advice or tips to improve things. I have Ubuntu 12.04 installed and I am usually logged in a Gnome Classic session. I have installed AMD's proprietary drivers (Catalyst version 12.4) and have Wine 1.4 installed. I have used Winetricks to install DX9/DX10 dlls and other things.

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• UBUNTU's Network Connection Manger can't detect Huawei ETS2051 Modem device!

  - by Doctoa

  I have a modem device called Huawei ETS2051 and the Network Connection Manger can't detect it, but when I use Gnome-PPP it work fine but the problem is when I use Gnome-PPP; apps like Ubuntu software Center Can't reconice that's Iam connecting to the Internet so the app is just act like it's offline while other apps like web browsers and IM's work good under Gnome-PPP. any way what I want is to have a Full Ubuntu experince by making The Network Connection Manger detect my ETS2051. I have another 3G USB modem and The Network Connection Manger detect it and it's work just fine but the internet price for this one is high and I can't effort it so am count on that ETS2051 modem as you can see for it's low price and stable internet speed that satesfy my needs. More information: Gnome-PPP is a GUI for wvdial. the ETS2051 modem use a serial USB port. I have a Windows driver CD for the device. I have also find This qustion about the software Center acting like it's offline around wvdial and there's this launchpad bug. and am really insest to use Ubuntu Software Center so please no other software manger apps recomendation... I've also this Genius ColorPage HR6X Slim scanner that's Ubuntu can't detect it, so if you interset you can check and answer the qustion from here...

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• Advice and resources on collaborative environments

  - by Tjaart

  I need some advice on collaborative software environments. More specifically, I am looking for books and reference materials that can aid me in understanding team and code structures and the interactions thereof. In other words books, blogs or white papers explaining: Different strategies for structuring teams that share common code between each other but have distinct individual functions? To summarise my question I would like to know what would be a good source of knowledge if I were to set up teams in an organisation that shared code but each unit still remained autonomous. I have done some research on this subject and explored: code review tools, distributed VCS, continuous integration tools, Unit testing automation. The tough part about implementing these tools are to determine where a good place would be to start, which tools are low hanging fruit, which tools or methods provide higher success rates. If someone asks me about code quality reference I point them to Code Complete. I am looking for an equivalent guide on software team structures and tools to make this equation work better. I realise that this question is quite vague but it arose as "we need to share code between teams without breaking each others stuff and causing management headaches and reams of red tape" The answer is definitely not simple and requires changes on many levels, hence the question. If the question is too vague please vote to close or delete. I would accept any good starting point as an answer.

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• How can I install from a 9.04 live USB/DVD?

  - by bstpierre

  I have a 9.04 (Jaunty) ISO burned to a USB stick; it appears to be a "live DVD". When I boot from it, I get a GRUB menu listing: Ubuntu, with Linux 2.6.35-generic (This matches the system currently installed on the HDD?) Ubuntu, with Linux 2.6.35-generic (recovery mode) Memory test Ubuntu 9.04, kernel 2.6.28-11-generic (on /dev/sda1) Ubuntu 9.04, kernel 2.6.28-11-generic (recovery mode) (on /dev/sda1) Ubuntu 9.04, memtest86+ (on /dev/sda1) When I select Ubuntu 9.04, kernel 2.6.28-11-generic (on /dev/sda1), I arrive at the desktop of a 9.04 system. I want to wipe the HDD clean and install 9.04. (Upgrading to something newer is not an option; this version is required by a legacy application.) How can I install from this live USB image? I vaguely remember some incantation that I should be able to use in the booted system, but my google-fu is broken at the moment. I'm comfortable with low-level commands, so if you want to recommend a more hard-core strategy, I'm willing to roll with it without requiring a ton of detail...

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• QueryUnit 0.0.0.8 – Trust No One

  - by Davide Mauri

  Yesterday I’ve release an updated version of QueryUnit, the version 0.0.0.8. QueryUnit now supports AreNotEqual, Greater, and Less assertions and is more capable of managing strings results. I must say that I cannot live anymore without a proper Unit Testing of a BI solution. Just yesterday happened that one of the unit tests at a customer site failed showing a subtle situation where the release of a new version of custom application would have corrupted the source of BI data with a very low chance that someone would have noticed it before several days. It may happen when you have more the 15 systems that handles the data needed by your BI solution. The key message of this situation is “Trust No One”: if your data hasn’t passed quality testing it’s not trustable. Period. QueryUnit is now officialy an hero :) No superpowers still, but useful above all. http://queryunit.codeplex.com/ Share this post: email it! | bookmark it! | digg it! | reddit! | kick it! | live it!

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• Common way to store model transformations

  - by redreggae

  I ask myself what's the best way to store the transformations in a model class. What I came up with is to store the translation and scaling in a Vector3 and the rotation in a Matrix4. On each update (frame) I multiply the 3 matrices (first build a Translation and Scaling Matrix) to get the world matrix. In this way I have no accumulated error. world = translation * scaling * rotation Another way would be to store the rotation in a quaternion but then I would have a high cost to convert to a matrix every time step. If I lerp the model I convert the rotation matrix to quaternion and then back to matrix. For speed optimization I have a dirty flag for each transformation so that I only do a matrix multiplication if necessary. world = translation if (isScaled) { world *= scaling } if (isRotated) { world *= rotation } Is this a common way or is it more common to have only one Matrix4 for all transformations? And is it better to store the rotation only as quaternion? For info: Currently I'm building a CSS3D engine in Javascript but these questions are relevant for every 3D engine.

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• Oracle OpenWorld Recap - A Walk in the Clouds (and heat in San Francisco)!

  - by Di Seghposs

  Whether you were one of the 50,000 attendees in San Francisco or one of the million+ online attendees – we’d like to thank you for joining us at Oracle OpenWorld last week! With temperatures in the 80s and 90s, attendees traveled the overheated streets to join packed keynotes and general sessions – all to find the information they came in search of – Oracle solutions to address their business requirements and challenges. The buzz of this year’s OpenWorld was all about ‘The Cloud’. And, the financial management team joined in the cloud buzz with Thomas Kurian’s keynote which highlighted our ERP Cloud Service as the most complete cloud service on the market. Offering the full breadth of business operations, including Financial Management, Risk and Control Management, Project Portfolio Management, Procurement, Sourcing, and Inventory Management, Oracle ERP Cloud Service transforms the back office into a collaborative, efficient, and intuitive hub. And, our product marketing expert on Financial Management, Annette Melatti, provided a glimpse of what the office of finance looks like in the 21st century as well as shared what’s next for Oracle’s financial solutions discussing the future of Financial Management with Fusion Financials, E-Business Suite, PeopleSoft and the JD Edwards solutions. There were over 120 sessions from customers, partners, and Oracle experts that addressed financial management solutions along with demo pods and Meet the Experts sessions. We hope you found what you were looking for! Missed any of the keynotes or general sessions? Watch them on demand here. At OpenWorld, we also announced that Lending Club, the leading platform for investing in and obtaining personal loans, has selected Oracle ERP Cloud Service to help improve decision-making, implement robust reporting, and take advantage of the cost savings provided by the cloud. The CFO of Lending Club, Carrie Dolan had mentioned that they “are an innovative, data-intensive, high-growth company and needed a solution and partner that could match us. We conducted a thorough review of our options, and Oracle ERP Cloud Service was the clear winner in terms of capabilities and business value as well as commitment to us as a customer.” Read the entire release here. For now, it’s back to business as we gear up for the second half of our fiscal year and start planning for Oracle OpenWorld 2013!

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