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Articles indexed Tuesday November 27 2012

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• JavaOne Latin America Sessions

  - by Tori Wieldt

  The stars of Java are gathering in São Paulo next week. Here are just a few of the outstanding sessions you can attend at JavaOne Latin America: “Designing Java EE Applications in the Age of CDI” Michel Graciano, Michael Santos “Don’t Get Hacked! Tips and Tricks for Securing Your Java EE Web Application” Fabiane Nardon, Fernando Babadopulos “Java and Security Programming” Juan Carlos Herrera “Java Craftsmanship: Lessons Learned on How to Produce Truly Beautiful Java Code” Edson Yanaga “Internet of Things with Real Things: Java + Things – API + Raspberry PI + Toys!” Vinicius Senger “OAuth 101: How to Protect Your Resources in a Web-Connected Environment” Mauricio Leal “Approaching Pure REST in Java: HATEOAS and HTTP Tuning” Eder Ignatowicz “Open Data in Politics: Using Java to Follow Your Candidate” Bruno Gualda, Thiago Galbiatti Vespa "Java EE 7 Platform: More Productivity and Integrated HTML" Arun Gupta  Go to the JavaOne site for a complete list of sessions. JavaOne Latin America will in São Paulo, 4-6 December 2012 at the Transamerica Expo Center. Register by 3 December and Save R$ 300,00! Para mais informações ou inscrição ligue para (11) 2875-4163. 

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• Understanding the SQL Server 2012 BI Semantic Model (BISM)

  SQL Server 2012 introduced an unified BI Semantic Model (BISM) which is based on some of the existing as well as some new technologies. This model is intended to serve as one model for all end user experiences for reporting, analytics, scorecards, dashboards, etc. In this tip, I will talk in detail about the new BISM, how it differs from earlier the earlier Unified Dimensional Model (UDM) and how BISM lays down a foundation for future.

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• Handling Backups for Rapid Resilience

  The backup and restore system in SQL Server hasn't changed a great deal over the years despite a huge growth in the typical size of databases. When disaster strikes, and an important service is taken offline while a restore is performed, there is often time to reflect on whether it might be possible to design databases for a more rapid recovery of the most critical parts of a database application. Uncover the flexibility of custom metricsKeep up to date from anywhere with SQL Monitor, and monitor the most important data for your servers and applications. Download a free trial.

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• Can I use a project code which has New BSD license but uses a GPL license library?

  - by Alok Kulkarni

  I want to use the ICSOpenVpn project source code in my commercial application. If we see the ICSOpenVpn project, it states that its license is New BSD but the libopenvpn.so library it uses is under GNU GPLv2 license. As per FAQ for version 2 of GNU GPL "If a library is released under the GPL (not the LGPL), does that mean that any program which uses it has to be under the GPL?" The answer says: "Yes, because the program as it is actually run includes the library." Also, how could ICSOpenVpn change the license to New BSD?

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• Calculating 3d rotation around random axis

  - by mitim

  This is actually a solved problem, but I want to understand why my original method didn't work (hoping someone with more knowledge can explain). (Keep in mind, I've not very experienced in 3d programming, having only played with the very basic for a little bit...nor do I have a lot of mathematical experience in this area). I wanted to animate a point rotating around another point at a random axis, say a 45 degrees along the y axis (think of an electron around a nucleus). I know how to rotate using the transform matrix along the X, Y and Z axis, but not an arbitrary (45 degree) axis. Eventually after some research I found a suggestion: Rotate the point by -45 degrees around the Z so that it is aligned. Then rotate by some increment along the Y axis, then rotate it back +45 degrees for every frame tick. While this certainly worked, I felt that it seemed to be more work then needed (too many method calls, math, etc) and would probably be pretty slow at runtime with many points to deal with. I thought maybe it was possible to combine all the rotation matrixes involve into 1 rotation matrix and use that as a single operation. Something like: [ cos(-45) -sin(-45) 0] [ sin(-45) cos(-45) 0] rotate by -45 along Z [ 0 0 1] multiply by [ cos(2) 0 -sin(2)] [ 0 1 0 ] rotate by 2 degrees (my increment) along Y [ sin(2) 0 cos(2)] then multiply that result by (in that order) [ cos(45) -sin(45) 0] [ sin(45) cos(45) 0] rotate by 45 along Z [ 0 0 1] I get 1 mess of a matrix of numbers (since I was working with unknowns and 2 angles), but I felt like it should work. It did not and I found a solution on wiki using a different matirx, but that is something else. I'm not sure if maybe I made an error in multiplying, but my question is: this is actually a viable way to solve the problem, to take all the separate transformations, combine them via multiplying, then use that or not?

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• What are some important guidelines when starting a software cooperative?

  - by Roy

  We are a group of people who are about to start a software cooperative, which means all of us (and other future workers) will be the owners of the 'company' rather than having bosses and employees. We do this from ideological reasons but also because we believe this allows many advantages - power of democracy (see SE..) , motivation, creativity, good work relations and atmosphere and more. We do face some questions about how exactly ownership of our products should be split, should we give different percentage for different people which put in a different amount of work hours or brings expert knowledge. We want people to feel they get what they deserve, not more, not less, and we're not sure just splitting it even will give this feeling. What are some good guidelines for solving these questions in a cooperative?

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• Transitioning to asynchronous programming model

  - by Simone

  our team is mantaining and developing a .NET web service written in C#. We have stress tested the web service's farm and we have evidence that the actual architecture doesn't scale well, as the number of request are constantly increasing. We analyzed Martin Fowler's conclusion in this article, and our team feels that migrating to an asynchronous programming model such as the one described could be the right direction to point to for our service too. My question is: do you think that this "switch" needs a complete rewrite of the application? Has been someone of you been able to adopt APM without rewriting everything and has some insight to share? Thank you in advance

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• .NET licenses and project worths millions

  - by Ivan Tanasijevic

  I have a question about. NET licenses. I heard that in the case when project becomes worth millions, Microsoft have rights on great percent of this amount. If this is true, then how are things with social network which is built with ASP.NET MVC. Is this the same situation as in the case of the profit coming from selling software, because in this situation profit comes from marketing not from direct selling software.

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• How to analyze data

  - by Subhash Dike

  We are working on an application that allows user to search/read some content in a particular domain. We wanted to add some capability in the app which can suggest user some content based on the usage pattern (analyze data based on frequency and relevance). Currently every time user search or read something we do store that information in backend database. We would like to use this data to present some additional content to user. Could someone explain what kind of tools will be required for such a job and any example? And what this concept is called, data analysis? data mining? business intelligence? or something else? Update: Sorry for being too broad, here is an example SQL Database (Just to give an idea, actual db is little different with normalization and stuff) Table: UserArticles Fields: UserName | ArticleId | ArticleTitle | DateVisited | ArticleCategory Table: CategoryArticles Fields: Category | Article Title | Author etc. One Category may have one more articles. One user may have read the same article multiple times (in this case we place additional entry in the user article table. Task: Use the information availabel in UserArticle table and rank categories in order which would be presented to user automatically in other part of application. Factors to be considered are frequency and recency. This might be possible through simple queries or may require specialized tools. Either way, the task is what mention above. I am not too sure which route to take, hence the question. Thoughts??

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• Linux Programmer moving to Windows

  - by cytinus

  I am a fairly proficient Linux programmer. I have been coding in Linux for 4 years, for both personal reasons and for profit. During those 4 years I have not even owned a computer running the Windows operating system. I am looking to expand my horizons into Windows programming, but am finding myself overwhelmed with the lack of what I perceive to be standardization. I feel as though different compilers follow different conventions, and all of the worthwhile IDEs cost money. Whats worse is that so many of the Tutorials are just terrible. If anyone else has taken the switch from Linux to Windows programming, what was the most helpful. What are the most straightforward IDEs and tutorials for using the API. I am looking to do mainly C and C++ development, along with some x86. I have found MASM primarily suits my needs for the latter.

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• Help me classify this type of software architecture

  - by Alex Burtsev

  I read some books about software architecture as we are using it in our project but I can't classify the architecture properly. It's some kind of Enterprise Architecture, but what exactly... SOA, ESB (Enterprise Service Bus), Message Bus, Event Driven SOA, there are so many terms in Enterprise software.... The system is based on custom XML messages exchanges between services. (it's not SOAP, nor any other XML based standard, just plain XML). These messages represent notifications (state changes) that are applied to the Domain model, (it's not like CRUD when you serialize the whole domain object, and pass it to service for persistence). The system is centralized, and system participants use different programming languages and frameworks (c++, c#, java). Also, messages are not processed at the moment they are received as they are stored first and the treatment begins on demand. It's called SOA+EDA -:)

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• Lenovo e420s overheating

  - by Matthew

  I recently bought a Lenovo e420s and decided to install Ubuntu (first time). The interface is great, but the computer overheats horribly (the fan is on full all the time and the cpu temperature is much higher than in Windows). In other words, it's not a fan problem, but an OS problem. Does anybody have a fix that is implementable by a luddite? I'd like to use linux, but it's not possible if it turns my computer into a radiator. Thanks.

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• LVD1 goes blurry if HDMI (DFP1) gets plugged in

  - by Jordon Bedwell

  I was wondering if anyone can explain why all of a sudden on 12.04 when I plug the HDMI in the text on my laptops monitor gets blurry. When I unplug the HDMI everything goes perfect again, text is crisp, plugin the HDMI text goes blurry. Screen 0: minimum 320 x 200, current 3280 x 1080, maximum 3280 x 1920 LVDS connected 1360x768+0+0 (normal left inverted right x axis y axis) 344mm x 194mm 1360x768 60.0*+ 1366x768 60.0 + 1280x768 60.0 1280x720 60.0 1024x768 60.0 1024x600 60.0 800x600 60.0 800x480 60.0 640x480 60.0 DFP1 connected 1920x1080+1360+0 (normal left inverted right x axis y axis) 160mm x 90mm 1920x1080 30.0 + 60.0* 59.9 30.0 1776x1000 59.9 30.0 1680x1050 60.0 59.9 1400x1050 60.0 59.9 1600x900 59.9 1280x1024 60.0 1440x900 59.9 1280x960 60.0 1360x768 60.0 1280x768 59.9 1280x720 60.0 59.9 1024x768 75.0 70.1 60.0 1152x648 59.9 1024x600 75.0 70.1 60.0 800x600 72.2 75.0 60.3 56.2 800x480 72.2 75.0 60.3 56.2 720x480 60.0 30.0 59.9 640x480 75.0 72.8 59.9 CRT1 disconnected (normal left inverted right x axis y axis) The TV is actually 1080p@60 not @75 and definably not preferred @30. Both are set to 60hz. The proprietary driver is installed and says it's working alright to me.

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• Is there anything software-related I can do, to make ubuntu play high-quality mkv files smoothely?

  - by Roy

  I've noticed that beyond let's say..a 20 MB/s bitrate, a movie would lag, played on my laptop.. It results in me missing the highest bitrated scenes of a movie.. And sometimes having to compromise for watching the movie at a lesser quality.. I was wondering if there's anything I can do software-wise to play movies smoothley..? At the moment Ubuntu is installed with all the default settings on an 60GB SSD I use VLC ofcourse.. I also have 2 1TB HDD - maybe I can use them as pagefiles? I don't really know alot about this so maybe this is irrelevant.. I took the laptop battery out since it was dead..but I think this is also irrelevant.. would appriciate a response, even if there's nothing that can be done software-wise :)

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• Ubuntu 12.10 stopped during booting

  - by Alberto

  Good morning, I'm very new to Ubuntu. I decided to change to Ububtu (12.10) for my old laptop (Compaq Presario R3000 with AMD Athlon XP 2800+) that previously used Windows XP. After the installation, the PC restarted but, after a certain activity of the HDD stopped. Menwhile, no information from the screen (blank). Then I retried in recovery mode and the activity stopped at a certain point. I write the last two lines: [ 11.020922] pcmcia_socket pcmcia_socket0: cs: IO port probe 0x3000-0x7fff: [ 11.021676] excluding 0x3000-0x30ff 0x3400-0x34ff 0x3800-0x38ff 0x3c00-0x3cff I don't know how to solve the problem. Thanks in advance for the help.

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• (CRON) info (No MTA installed, discarding output)

  - by Pooky

  I have a fresh install of Ubuntu 12.04.1 LTS an a number of servers. I have not added any cron jobs or edited my crontab on those servers, however, at around the same time for each machine, I get a 75% CPU spike and the following info in my syslog at the time of the spike: CRON[8380]: (CRON) info (No MTA installed, discarding output) I have mono-complete installed and am running a service stack webserver. What is the best way for me to stop this from happening? I would like to be able to remove the CPU spike. Thanks

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• Brightness Adjustment on Desktop Computer

  - by DjBmNukez

  I have Ubuntu 12.10 I need an application/software that can increase and decrease my brightness. I know I can do it through my pc monitor but I don't want that. I want to control it through a software. I personally cannot find an application about this issue. I know that it is possible because the OS has the Fading effects before Screen Savers. I want to control brightness through a software for desktop pc.

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• Hard drive and DVD drive are not being detected by the BIOS

  - by Shah Nsd

  My hard drive and DVD drive are not being detected by the BIOS when I go in to the boot option menu by pressing F12. When I put the hard drive in a different computer it's being detected. I am assuming it's either the mother board or the BIOS. Since the HDD is not being detected I have installed Ubuntu on a flash drive, but even that has become so slow, that it takes around 5 minutes for it to boot. I want to flash the BIOS before I think of changing the motherboard. I have downloaded the updated file and it has a flash.bat and a afudos.exe. I have to run the .bat file. I downloaded the Dos in a box and went to the DOS directory where the .bat file is and tried to run it, but it gives me the error message "This program cannot run under this operating system" Any help would be appreciated

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• Trying to recover deleted Ubuntu partition

  - by user110984

  I made a mistake in logging into my 200 GB Ubuntu partition. I could not access Grub after that. Using a live CD I then ran Boot_Repair and apparently deleted the partition, I guess because I ran it from my 70 GB Windows partition. I can send the results of boot_info before that and of Boot_Repair. Then I ran TestDisk, which apparently found only dev/sda/ -320GB / 298 / GiB - WDC - WD3200BEVT-22A23T0 (Was there any more I could have done with TestDisk? I looked at the TestDisk_Step_By_Step example and found no way forward given that no other partitions turned up) I have run gpart and found this: /sda1 - 15 GB /sda2 - system reserved /sda3 - 70.15 GB /sda4 - extended 212.84 unallocated - 209.10 /sda5 - unknown 3.74 . I have been told I can recover the partition using gparted's Rescue start end command, but I don't know what to enter for start and end. [--EDIT: TestDisk Deeper Search stated that "the following partitions can't be recovered" and listed a 220-GB Linux partition 6 times. Then it stated that "The current number of heads per cylinder is 255 but the correct value may be 128" and I could try to change it in the Geometry menu (because apparently these are overlapping partitions) So should I do that?--]

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• Any benefit of /home Ubuntu partition

  - by nightcrawler

  I want to have dual OS of Win8 & Ubuntu 12.10. Provided that Ubuntu can access ntfs partition of Windows but same can't be said about Windows this leads to a question mark on the significance of having /home partition while installing Ubuntu. As far as I know /swap & / are the two partitions directly used by Ubuntu to store programs, installation & stuff while the documents/media resides in /home. Now because Ubuntu releases are more frequent than Windows & updates needs backup & relate stuff, so I came to decision to not to use /home at all, rather keep all my documents/media in ntfs, which would be untouched while upgrading Ubuntu as Win updates are once in a decade! Is my thinking correct? If yes, what would be the minimum space I should allot to /home plus how much I should allot to / one must know that I plan to use heavy applications like Maple, Matlab & Sagemath on Ubuntu.

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• Motion is saving images to home directory

  - by Kevin

  I was interested in setting up a home security network. I installed Motion in Ubuntu 12.04 and it worked fine. Then the next day I went to play around with it some more but the images are not being saved to /tmp/motion as the configuration file states, but to the home directory: [1] File of type 1 saved to: ./01-20121126211634-12.jpg Any idea if there is another setting that has more priority than the motion config file?

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• Search the internet for a term selected in a text editor/viewer

  - by cipricus

  It seems possible (as I learned from a comment to this question made by user55822) to use Artha in order to search a term on the Internet by using "keybinding". What the aforementioned user says is that "you could search mouse selection anywhere by using an app like Artha, or by keybinding sh -c 'firefox "http://translate.google.com/#en/fr/$(xclip -o)"' (example given translate english into french)" A lot of things are obscure for me here. I could use Artha or keybinding (as alternative), or both? How to do that in each case? and "The command I gave you will open google translate in Firefox with your mouse selection (text highlighted) as a query. Use sh -c 'firefox "https://www.google.com/search?q=$(xclip -o)"' if you want regular Google over Google translate. And obviously, that would work everywhere" I do not know what to do with that formula. What should I do exactly? How to use it? In what application?

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• Global menu not showing in Ubuntu 12.10 with Unity

  - by William

  I am on Ubuntu 12.10 with Unity shell. I am not quite sure what happened, but today I noticed that the menubar (containing 'File, Edit, etc...') is not appearing on the panel as it used to (i.e. the global application menu), but on the application window under the title bar. The only application that still uses global menu is Chromium. Any ideas what settings may have changed? Also, when I right click on the desktop and select "Change Desktop Background", System Settings opens, instead of the "Appearance" settings. Apparently, here is a related question, with no answer: Global menu and HUD suddenly broken EDIT: I noticed this behavior on three of my computers after an update (I do not remember exactly which packages were updated). Now when I try to run apt-get upgrade, I get: The following packages have been kept back: gnome-control-center gnome-control-center-data I guess something is going on with updates. Any info would be appreciated.

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• I removed nvidia driver and lshw -c video still shows nvidia

  - by sinekonata

  Today I tried to activate the newer experimental drivers and both 304 and 310 failed to even install. So I tried the regular nvidia driver 295.40 for the 20th time today (I had lag issues and was testing Nouveau vs Nvidia with dual monitor and Unity2D-3D) Within my tty1 I tried to remove nvidia: sudo apt-get remove nvidia-settings nvidia-current and purge too reboot, nothing. So when lshw -c video displayed nvidia as my driver I tried sudo rm /etc/X11/xorg.conf since I read ubuntu would "reset" the GUI conf but reboot, nothing. So next I tried sudo jockey-text --disable=xorg:nvidia_current And nothing has worked...

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• USB 3.0 controller is not recognized

  - by BlueWanderer

  I have a Thinkpad E430 notebook, and the intel's USB 3.0 controller can not be recognized by Ubuntu 12.04. The LED on my USB-HDD is white instead of blue (And in Windows 7, it is blue when connected to USB 3.0 port, and is white when connected to 2.0). And the transfer speed is around 25MB/s instead of 65MB/s in Windows 7. I'm not familiar with Linux systems, so I've no clue about what's going wrong. I've searched the web, but got no solution.

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