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• My processor is not detected intel core 2 duo

  - by walid

  My processor is not detected intel core 2 duo When I type $uname -m -p I get this i686 unknown I have Ubuntu 10.10 netbook remix but the cat /proc/cpuinfo gives right identification of two processors as below processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 15 model name : Intel(R) Core(TM)2 CPU T5600 @ 1.83GHz stepping : 6 cpu MHz : 1826.000 cache size : 2048 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 2 apicid : 0 initial apicid : 0 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm lahf_lm dts tpr_shadow bogomips : 3657.99 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 15 model name : Intel(R) Core(TM)2 CPU T5600 @ 1.83GHz stepping : 6 cpu MHz : 1826.000 cache size : 2048 KB physical id : 0 siblings : 2 core id : 1 cpu cores : 2 apicid : 1 initial apicid : 1 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm lahf_lm dts tpr_shadow bogomips : 3657.53 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: The problem is with programs that uses more than one core like virtualbox and bitcoin which refuses to use more than one core Is there anythign wrong or anything that I can do? My installation is from a live usb iso on a USB

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• ArchBeat Link-o-Rama for October 22, 2013

  - by OTN ArchBeat

  The road ahead for WebLogic 12c | Edwin Biemond Oracle ACE Edwin Biemond shares his thoughts on announced new features in Oracle WebLogic 12.1.3 & 12.1.4 and compares those upcoming releases to Oracle WebLogic 12.1.2. Oracle BI Apps 11.1.1.7.1 – GoldenGate Integration - Part 2: Setup and Configuration | Michael Rainey Michael Rainey continues his series with another technical article for you GoldenGate fans. There's A Virtual Developer Day in Your Future Have you experienced OTN VDD? Relax, it's not something that requires medical attention. But an OTN Virtual Developer Day event will enlarge your brain with hands-on information on Oracle technologies. Upcoming events will cover Oracle WebLogic and Coherence (Nov 5) and Oracle ADF (Nov 19). My Summary of Oracle Open World 2013 | Luis Weir SOA/Middleware specialist Luis Weir's first trip to Oracle OpenWorld was what you might call a total immersion experience. His blog post includes details about what kept him very, very busy during his OOW13 experience. Live Blog: Book Review of Building Modular Cloud Apps with OSGi by Bert Ertman and Paul Bakker | Lucas Jellema This interesting post from Oracle ACE Director Lucas Jellema is a work in progress. He's updating as he goes. Check it out. Thought for the Day padding-left: 20px; padding-right: 20px;"> "In the information age, you don't teach philosophy as they did after feudalism. You perform it. If Aristotle were alive today he'd have a talk show." — Timothy Leary, American psychologist and writer (October 22, 1920 – May 31, 1996) Source: brainyquote.com

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• Playing Age of Empires II multiplayer in VirtualBox Over wi fi network

  - by Gaurav_Java

  I installed Age of Empires II (Expansion) in VirtualBox (hosting Windows XP). It works great in single player mode. Unfortunately, I tried playing multiplayer via WI-FI which I created on my Ubuntu machine and can't seem to join games. But when I connected to my WI-FI router other able to connect to my system and we can play multiplayer mode This is what I've done so far to try to resolve the issue: I noticed that the IP address of my virtual machine was 10.0.x.x, While the local IP on Ubuntu is 192.168.x.x, which I figured was a Problem. So I changed from NAT networking to bridged networking in VirtualBox . I turned off the Windows firewall in the virtual machine and don't have any ports blocked by Ubuntu, so no software firewall should be at fault. However I'm still unable to play multiplayer games, and suspect that some kind of networking issue lies at the heart of the problem. I'm not sure what else I would need to change, however. So essentially I was wondering if anyone else here has managed to play AOE2, or any similar game, inside VirtualBox from Ubuntu, and if so what you needed to do to make it possible. Or if anyone has suggestions on where else to look to figure out the problem, I'd appreciate that as well. Unfortunately AOE2 itself doesn't provide any debugging information to troubleshoot the inability to connect to network games. Here MY IP result both for Ubuntu and Virtualbox XP I want to play game on multiplayer mode in virtualbox on my system(Own Created on Ubuntu ) wi-fi on which other can connect and play hope someone will answer this

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• iFrame content pageviews not matching parent page pageviews

  - by surfbird0713

  I have a page with content hosted in an iFrame, both using the same GA account ID. When I look at the pages report, the parent page has about 9000 unique views, but the iFrame content only has 3700. Anyone have an idea what could cause that kind of discrepancy? My only guess is that it would be caused by people moving on before the iFrame content has a chance to load, but the average time on page for the host page is 56 seconds, so that doesn't seem possible. This is the page in question: http://cookware.lecreuset.com/cookware/content_le-creuset-lid_10151_-1_20002 The flipbook is hosted in the iFrame on a separate domain. I have each page of the flipbook triggering a virtual pageview to try to evaluate engagement with the book - when the flipbook loads, it fires a pageview for the page it is on, so that is the page I'm using for the 3700 number. I also looked at the source of the iFrame in the pages report, and that number just about matches the virtual pageviews so that piece is consistent. Any ideas on this are much appreciated. Thanks!

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• How to partition Seagate FreeAgent GoFlex 2TB hard disk?

  - by balki

  Hi I bought a new Seagate 2TB external hard disk. I opened the drive's application in my virtual windows, did product registration using the application present in it. I have few questions on how best to use it. The drive by default has some files and folders - setup.exe, System Volume Information, USB 3.0 PC Card Adapter etc,. I copied all the files to my laptop. Is it safe to delete these files? It has a dash board for windows which allows to tune power options, test the drive etc. Will I be able to use the dash board if I put back all these files and mount on windows again? I want to partition and format the hard disk. Data I like to store is Around 10 to 20 GB Files - Virtual box images. Around 4GB Files - Dvd images. Other Movies and personal Files. What is the best filesystem to store very huge files like 10 to 20GB files. So that they are written and accessed fast also best uses the drive's capacity. If I leave one of the partition as ntfs and others to different files systems, will it be able to mount on windows and Will I be able to use the device's dash board? Note: I dont need any encryption for my data. Any other advice on using the hard disk is also welcome.

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• Get Trained on Oracle VM Server for x86 in your timezone or location

  - by Antoinette O'Sullivan

  Register now to get trained on Oracle VM Server for x86 in your location or timezone - and frequently in your local language. You have a choice between the 3 day course, Oracle VM Administration: Oracle VM Server for x86, providing you with a wide range of hands-on exercises or a 1 day seminar, Oracle VM with Oracle VM Server for x86 Seminar. And you have a choice of attending these instructor-led courses Live from your desk through Oracle Universities Live Virtual Classes. For these virtual events there are hundreds of scheduled events across many timezones and there is no need to travel! Schedule details available on the Oracle University portal and visit the Virtualization space. In a classroom with a subset of scheduled events shown below:  Where  When  Delivery Language  3 day Hands-On Course      Dusseldorf, Germany  6 August 2012  German  Munich, Germany  9 July 2012  German  Paris, France  17 October 2012  French  Sydney, Australia  3 September 2012  English  Denver, United States  30 July 2012  English  Roseville, United States  25 June 2012  English  1 day Seminar      Paris, France  4 September 2012  French  Roseville, United States  15 June 2012  English  Mexico City, Mexico  20 June 2012  Spanish To find additional classes, go to the Oracle University portal and visit the Virtualization space. Should you not find an event on the schedule that suits you, register your interest for a specific event/date.

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• Configuration tools for multiple monitors for X / Linux

  - by richard

  I have Ubuntu 10.04 running gnome and two monitors. I am wondering if a can get a better multi-monitor configuration tool. The one I have, gnome-display-properties, has too many problems, including: When I swapped my monitors over, the narrower (external) one now on the left. There is a width calculation error, such that I have a virtual monitor the width of the wide-monitor on the narrow-monitor and part of the wide monitor. And a virtual narrow-monitor on the remainder of the wide-monitor. Also the visible mouse pointer does is not aligned with the active spot, an x offset of one monitor width. I would like, in approximate order of importance: nobugs. to be able to select which is primary monitor. to have multiple configurations. configurations to be automatically selected based on which monitors are attached. configurations to be cycled (reliably) when display mode key is pressed. when a display is deactivated, for windows to migrate to remaining monitors. option to not change display resolution when mirroring, but to use side/top blanking bars to pad out screen.

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• Configuring Transmission for faster download

  - by Luis Alvarado

  I have tested on the same PC with the same torrent/magnet links the following Torrent Clients: Transmission Ktorrent Deluge qBittorrent Vuze After 7 days of testing I noticed that the only one that took longer to start downloading and to keep an optimum/max download speed was Transmission. It was the slowest of them all to download the same torrents or magnet links which I tested 8 torrents and 4 magnet links from different sites and the one that took the most to start downloading or start after a pause/resume event. The other 4 just took less than 2 seconds for example to start downloading and to download the same content between 50% less time to 80% less time. I think that Transmission has the same capabilities about downloading/resuming than the other torrent clients but it may be because of some configuration I need to do to get the same speed and effect than the others. In my tests all torrent clients were tested with their default configurations. No changes were made. They were tested on the same PC, with the same network connection in the same time periods. So I am thinking that Transmission just needs a little bit of configuration tunning. I also set the ports for use to the same one for each. Checked the router for any blocking and anything related to the network. What options can I change to make it so Transmission resumes a download faster (grabs the seeds faster) and keeps a fast download all the time (Stays with the seeds that offer the best connection for example). Both of which by the look of it are features that the rest of the torrent clients do already.

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• Implementing a multilanguage AI contest platform

  - by Alejandro Piad

  This is a followup to this question. To sum: I'm implementing an AI contest site, where each user may submit several AI implementations for different games. Think about Google AI Challenge but instead of just having a big event once a year, I would like it more on a league fashion, with all virtual players playing with each other every some close period of time. I want to support as many programming languages as possible. I've seen that contest sites (like codeforces) ask you to submit a source code and interact through stdin and stdout. The first question is: what is the best way of supporting multiple languages? As I see it, I can either ask people to upload some binary/script, and interact either through stdin/*stdout*, or sockets, or the file system; or ask people to submit source code, and wrap it with whatever is necessary for the interaction. I would like to skip the need to compile the code by myself (in the server, I mean), but I am willing to do it if its the "best" choice. I need to comunicate virtual players with each other, or even better, with some intermediary arbiter. The second question is regarding security. If I'm going to be running user code in my server, I want to ensure strict security conditions, like no file system access, no networking, etc. Otherwise it would be a safe heaven for hackers. I will be implementing the engine/arbiter in .NET. I would like to support at least C#, C++, Java and Python for the user's implementations. I'm willing to write interfaces for each of these languages to simplify the user interaction with the system. Thanks in advance.

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• Workaround: build FBX in XNA raise OutOfMemoryException

  - by Vitus

  If you try to add large FBX 3D model to the XNA project, and build it, you can get an OutOfMemoryException build error like following: Error    1    Building content threw OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.    at System.Collections.Generic.List`1.set_Capacity(Int32 value)    at System.Collections.Generic.List`1.EnsureCapacity(Int32 min)    at System.Collections.Generic.List`1.InsertRange(Int32 index, IEnumerable`1 collection)    at Microsoft.Xna.Framework.Content.Pipeline.Graphics.VertexChannel`1.InsertRange(Int32 index, Int32 count)    at Microsoft.Xna.Framework.Content.Pipeline.Graphics.VertexContent.InsertRange(Int32 index, IEnumerable`1 positionIndexCollection)    at Microsoft.Xna.Framework.Content.Pipeline.Graphics.MeshBuilder.AddTriangleVertex(Int32 indexIntoVertexCollection)    at Microsoft.Xna.Framework.Content.Pipeline.MeshConverter.FillNodeWithInfoFromMesh(KFbxNode* fbxNode, String name, KFbxGeometryConverter* geometryConverter)    at Microsoft.Xna.Framework.Content.Pipeline.FbxImporter.ProcessInformationInNode(KFbxNode* fbxNode, String name, Boolean* partOfMainSkeleton, Boolean* warnIfBoneButNotChild)    at Microsoft.Xna.Framework.Content.Pipeline.FbxImporter.ProcessNode(ValueType parentAbsoluteTransform, NodeContent potentialParent, KFbxNode* fbxNode, Boolean partOfMainSkeleton, Boolean warnIfBoneButNotChild)    at Microsoft.Xna.Framework.Content.Pipeline.FbxImporter.ProcessNode(ValueType parentAbsoluteTransform, NodeContent potentialParent, KFbxNode* fbxNode, Boolean partOfMainSkeleton, Boolean warnIfBoneButNotChild)    at Microsoft.Xna.Framework.Content.Pipeline.FbxImporter.Import(String filename, ContentImporterContext context)    at Microsoft.Xna.Framework.Content.Pipeline.ContentImporter`1.Microsoft.Xna.Framework.Content.Pipeline.IContentImporter.Import(String filename, ContentImporterContext context)    //additional calls here …   My desktop PC have 8Gb RAM, and Visual Studio’s process devenv.exe use under 2Gb of it while build process (about 3.5-4Gb of RAM is always free). It’s obvious, that VS can’t address more than 2Gb of RAM, and when that limit is over, build process is fail. OS on my PC is Win x64,  so I “charge” devenv.exe by using editbin.exe utility – in the VS Command prompt I run following: editbin "C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE\devenv.exe" /LARGEADDRESSAWARE This command edits the image to indicate that the application can handle addresses larger than 2 gigabytes. After that FBX file successfully built! Of course, you must put proper path to devenv.exe, depend on your installation path. If you are on Win x86, you need to do additional action – more info here.   P.S.: although now you can build a bigger files, than usual, keep in mind, that XNA have some restrictions on vertex buffer size etc., depend on your current XNA project profile (Reach or HiDef). And if your model’s vertexbuffer size more than 64Mb (with Reach profile), that model can’t be built and raise an error.

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• How to access an encrypted INI file from C on an embedded system with little RAM

  - by Mawg

  I want to encrypt an INI file using a Delphi program on a Windows PC. Then I need to decrypt & access it in C on an embedded system with little RAM. I will do that once & fetch all info; I will not be consutinuously accessing the INI file whenever my program needs data from the file. Any advice as to which encryption to use? Nothing too heavyweight, just good enough for "Security through obscurity" and FOSS for both Delphi & C. And how can I decrypt, get all the info from the INI file - using as little RAM as possible, and then free any allocated RAM? I hope that someone can help. [Update] I am currently using an Atmel UC3, although I am not sure if that will be the final case. It has 512kB falsh & 128kB RAM. For an INI file, I am talking of max 8 sections, with a total of max 256 entries, each max 8 chars. I chose INI (but am not married to it), because i have had major problems in the past when the format of a data fiel changes, no matter whether binary, or text. For tex, I prefer the free format of INI (on PC), but suppose I could switch to line_1=data_1, line_2=data_2 and accept that if I add new fields in future software erleases they must come at the end, even if it is not pretty when read directly by humans. I suppose if I choose a fixed format text file then I never need get more than one line into RAM at a time ...

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• RAM caching causes severe performance drops

  - by B T

  I have read plenty of threads on memory caching and the standard response of "large cache is good, it shouldn't effect performance", "the kernel knows best". I have recently upgraded from 12.04 to 12.10 and changed from VirtualBox to VMware Workstation and the performance differences are severe (I suspect it is because of the latter). When I am running my virtual machine the system load monitor graph shows less than 50% memory usage generally. System load indicator is showing me that the rest of my RAM is used in the cache all the time. Plain and simple this is the comparison: BEFORE Cache was very sparingly used, pretty much none of my memory usage was the cache Swappiness was 0 (caused my memory to be used first, then swap only if needed) Performance was quite good and logical RAM was used fully first, caching was minimal. I could run enough software to utilize my full 4GB of RAM without any performance degradation whatsoever Swap space was then used as needed which was obviously slower (I am on a HDD) but was still usable when the current program was loaded into memory AFTER Cache is used to fill the full 4GB as soon as my virtual machine is run Swappiness is 0 (same behaviour as before but cache uses full memory straight away) Performance is terrible and unusable while running Ubuntu software Basic things like changing windows takes 2 minutes + Changing screens happens frame by frame over sometimes up to 5 minutes Cannot run an IDE and VM like I could with ease before So basically, any suggestions on how to take my performance back to how it was before while keeping my current setup? My suspicion is VMWare is the problem, but how do I see what is tied to the use of the cache? Surely there is a way to control this behaviour in software as polished as VMware? Thanks EDIT: Could also be important to note that the behaviour differs depending on whether VMware is open or closed. If VMware is open, then the ram will lock at like 50% and 50% cache and go into the complete lock up mentioned above. Contrastingly, if VMware is closed (after being open), then the RAM will continue to rise as it needs / cache will stay as the complete remaining memory and there is no noticeable performance degradation.

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• links for 2011-02-04

  - by Bob Rhubart

  Oracle WebCenter Suite - Giving Users a Modern Experience: Webcast Q&A (Oracle Enterprise 2.0 Blog) Kellsey Ruppel share a summary of the viewer Q&A from the recent Oracle WebCenter Suite webcast. (tags: oracle otn enterprise2.0 webcenter) Oracle Fusion Middleware Security: Oracle Access Manager 11g Academy: The Policy Model (Part 1) Brian Eidelman kicks off a series of posts covering Oracle Access Manager. (tags: oracle otn fusionmiddleware security) The Tom Kyte Blog: A short podcast... Oracle senior technical architect Tom Kyte shares information on a series of upcoming live, in-person events in which he will participate. (tags: oracle otn ioug) Oracle and AIIM - Putting Enterprise 2.0 to Work (Oracle Enterprise 2.0 Blog) Brian Dirking shares a recap of the recent online Enterprise 2.o presentation by Andy MacMillan (Oracle) and Doug Miles (AIIM). (tags: oracle otn enterprise2.0) Arun Gupta: WebLogic Developer/Production Web Profile, Full Java EE 6 Platform - Chat Transcript and Slides from OTN Virtual Developer Day Arun Gupta shares chat transcripts and more from the recent OTN Virtual Developer Day focused on WebLogic. . (tags: weblogic java) Andrejus Baranovskis's Blog: How to Install Oracle ECM 11g PS3 - Domain Configuration Hint Concise instructions from Oracle ACE Director Andrejus Baranovski. (tags: oracle otn oracleace enterprise2.0 weblogic) Oracle BI EE 11g & Oracle ADF - Part 1 - Understanding Security Integration Rittman Mead's Venkatakrishnan J explores "how much Oracle ADF or the Oracle Fusion Middleware has influenced most of the features in BI EE 11g." (tags: oracle oracleace businessintelligence obiee) Gone With the Wind: Where Have All the Composites Gone? SOA author Antony Reynolds solves a mystery. (tags: oracle otn soa) Playing with Oracle 11gR2, OEL 5.6 and VirtualBox 4.0.2 (1st Part) "This installation should never be used for Production or Development purposes. This installation was created for educational purpose only, and is extremely helpful to learn and understand how Oracle works if you do not have access to a traditional hardware resource." - Oracle ACE Director Francisco Munoz Alvarez (tags: oracle otn virtualbox virtualization)

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• NVIDIA error "fallen off the bus"

  - by yurividal

  i have been having a Serious Issue with my LG notebook and its Nvidia Geforce 310M GPU. It usualy (99% of the time) happens when i leave the computer idle for a while, but it has also happened sometimes while i was using the PC. Suddenly, (usualy when computer is idle) the screen goes black, and the pc freezes completely on the black screen. (not even ping responses). The only sollution is to Hard Reset the machine. When analizing the syslog, i see the following error: Sep 18 20:58:08 yuri-notebook kernel: [ 1936.510073] NVRM: GPU at 0000:01:00.0 has fallen off the bus. Sep 18 20:58:08 yuri-notebook kernel: [ 1936.510087] NVRM: GPU at 0000:01:00.0 has fallen off the bus. Sep 18 20:58:08 yuri-notebook kernel: [ 1936.510157] delay: estimated 354, actual 1 Sep 18 20:58:08 yuri-notebook kernel: [ 1936.510173] delay: estimated 353, actual 0 I have already tryed different versions of the Nvidia Drivers, and also tryed removing each of my 2 DDR3 memories. The problem does not seem to be hardware, because when i boot into windows 7, it works normaly, for days. I am desperate with this problem, because it makes my Ubuntu practicaly unusable. Thanks in advance, Yuri

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• Javascript: Machine Constants Applicable?

  - by DavidB2013

  I write numerical routines for students of science and engineering (although they are freely available for use by anybody else as well) and am wondering how to properly use machine constants in a JavaScript program, or if they are even applicable. For example, say I am writing a program in C++ that numerically computes the roots of the following equation: exp(-0.7x) + sin(3x) - 1.2x + 0.3546 = 0 A root-finding routine should be able to compute roots to within the machine epsilon. In C++, this value is specified by the language: DBL_EPSILON. C++ also specifies the smallest and largest values that can be held by a float or double variable. However, how does this convert to JavaScript? Since a Javascript program runs in a web browser, and I don't know what kind of computer will run the program, and JavaScript does not have corresponding predefined values for these quantities, how can I implement my own version of these constants so that my programs compute results to as much accuracy as allowed on the computer running the web browser? My first draft is to simply copy over the literal constants from C++: FLT_MIN: 1.17549435082229e-038 FLT_MAX: 3.40282346638529e+038 DBL_EPSILON: 2.2204460492503131e-16 I am also willing to write small code blocks that could compute these values for each machine on which the program is run. That way, a supercomputer might compute results to a higher accuracy than an old, low-level, PC. BUT, I don't know if such a routine would actually reach the computer, in which case, I would be wasting my time. Anybody here know how to compute and use (in Javascript) values that correspond to machine constants in a compiled language? Is it worth my time to write small programs in Javascript that compute DBL_EPSILON, FLT_MIN, FLT_MIN, etc. for use in numerical routines? Or am I better off simply assigning literal constants that come straight from C++ on a standard Windows PC?

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• Leveraging ERP Investments with EPM and BI Solutions

  - by john.orourke(at)oracle.com

  Now that many organizations have implemented ERP systems to automate and integrate their operational processes, IT investments are beginning to shift to the management systems i.e. EPM and BI tools and applications that integrate data from multiple transactional systems.  These solutions automate and integrate the management processes and enable organizations to achieve "management excellence" becoming smarter, more agile and more aligned than their competitors.  In fact the results of a recent IDC survey indicate that "Organizations that have implemented performance management more broadly are nearly four times more likely to be among the most competitive organizations in their industry."  One example of an organization that is leveraging their ERP investments with Oracle EPM and BI solutions is General Dynamics.  The Business Intelligence Collaborative (BIC) group within General Dynamics' IT organization assists various business units with the implementation, application support, and application hosting for their Business Intelligence and Enterprise Performance Management Applications.  Attend the Oracle Virtual Trade Show "Spotlight on Customer Success" on February 3rd to hear the details of how General Dynamics is using Oracle Essbase, Hyperion Planning, and Oracle BI to improve their planning, reporting and analysis processes and leverage their investments in Oracle E-Business Suite and other operational systems.   During the event, you can also hear about the latest developments and plans for Oracle Applications products, as well as what's coming with Oracle Fusion Applications. Here's a link to the Virtual Trade Show event overview and registration page.  The event runs from 8AM - 1PM PST/11AM - 4PM EST, and the EPM session is 10:30 - 11AM PST/1:30 - 2PM EST.    http://event.on24.com/event/26/79/15/rt/opFb.html?partnerref=internal I hope you'll join us on February 3rd!  

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• Efficient mapping layout in 2D side-scroller, and collisions between character and the world

  - by Jack

  I haven't touched Visual Studio for a couple months now, but I was playing a game from the '90s toady and had an epiphany: I was looking for something what i didn't need, and I wasn't using what I knew correctly. One of those realizations was collision, so let me tell you a bit about my project that I was working on. The project's graphics looks like Mario or Dangerous Dave, etc., you get the idea - old-school pixels. So anyway I remember trying to think of something else than AABB for character form, but I couldn't think of anything. Perhaps I could get a suggestion for this? Another thing is the world - I don't want it to be just linear world, I want mountains, etc.. My idea is to use triangles, and no idea yet what to do if I want just part of the cube, say 3/4 or 2/4 or whatever. Hard-coding such things seems inefficient. P.S. I am not looking at the precision level offered by Box2D. Actually I remember trying to implement it at first, but I failed as my understanding of C++ wasn't advanced enough, as it'll be mentioned below. P.P.S. I am programming in C++, and I haven't done it for a couple months now. I have no means of testing it either, as my PC is broken down, and this one can barely run games from late '90s, not to speak about a compiler or a program with inefficient resource management... I am also not an expert (obviously), I don't even know if I can consider myself an average programmer. In short, I am simply curious about my thoughts and my past experience when programming the game. I may come back to it when my PC is fixed, I'm already filling a note about these things.

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• The Science Behind Salty Airline Food

  - by Jason Fitzpatrick

  In this collection, Artist Signe Emma combines a scientific overview of the role salt plays in airline food with electron microscope scans of salt crystals arranged to look like the views from an airplane–a rather clever and visually stunning way to deliver the message. Attached to the collection is this explaination of why airlines load their snacks and meals with salt: White noise consists of a random collection of sounds at different frequencies and scientists have demonstrated that it is capable of diminishing the taste of salt. At low-pressure conditions, higher taste and odour thresholds of flavourings are generally observed. At 30.000 feet the cabin humidity drops by 15%, and the lowered air pressure forces bodily fluids upwards. With less humidity, people have less moisture in their throat, which slows the transport of odours to the brains smell and taste receptors. That means that if a meal should taste the same up in the air, as on ground it needs 30% of extra salt. To combat the double assault on our sense of taste, the airlines boost the salt content to compensate. For more neat microscope scans as high-altitude view photographs, hit up the link below. 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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• UPDATE MANAGER UNABLE TO UPDATE

  - by muguro

  Requires installation of untrusted packages The action would require the installation of packages from not authenticated sources. i get this error every time i try updating. the system shows that it has 466 updates but fails after clicking update more details have this accountsservice apparmor apport apport-gtk apt apt-transport-https apt-utils aptdaemon aptdaemon-data at-spi2-core bamfdaemon base-files bcmwl-kernel-source bind9-host compiz compiz-core compiz-gnome compiz-plugins-default cron cups cups-bsd cups-client cups-common cups-filters cups-ppdc dbus dbus-x11 dconf-gsettings-backend dconf-service desktop-file-utils dmsetup dnsutils empathy empathy-common eog evince evince-common evolution-data-server evolution-data-server-common firefox firefox-globalmenu firefox-gnome-support firefox-locale-en fontconfig fontconfig-config fonts-liberation fonts-opensymbol foomatic-filters gcalctool gdb ghostscript ghostscript-cups ghostscript-x ginn gir1.2-atspi-2.0 gir1.2-dbusmenu-glib-0.4 gir1.2-dbusmenu-gtk-0.4 gir1.2-gst-plugins-base-0.10 gir1.2-gtk-3.0 gir1.2-gtksource-3.0 gir1.2-gudev-1.0 gir1.2-javascriptcoregtk-3.0 gir1.2-launchpad-integration-3.0 gir1.2-pango-1.0 gir1.2-rb-3.0 gir1.2-totem-1.0 gir1.2-ubuntuoneui-3.0 gir1.2-unity-5.0 gir1.2-webkit-3.0 glib-networking glib-networking-common glib-networking-services gnome-accessibility-themes gnome-control-center gnome-control-center-data gnome-desktop3-data gnome-games-data gnome-icon-theme gnome-media gnome-orca gnome-settings-daemon gnome-sudoku gnomine gnupg google-talkplugin gpgv grub-common grub-pc grub-pc-bin grub2-common gstreamer0.10-alsa gstreamer0.10-plugins-base gstreamer0.10-plugins-base-apps gstreamer0.10-x gvfs gvfs-backends gvfs-bin gvfs-common gvfs-daemons gvfs-fuse gvfs-libs gwibber gwibber-service gwibber-service-facebook gwibber-service-identica gwibber-service-twitter hdparm hplip hplip-data indicator-sound initscripts isc-dhcp-client isc-dhcp-common jockey-common jockey-gtk krb5-locales landscape-client-ui-install language-pack-en language-pack-en-base language-pack-gnome-en language-pack-gnome-en-base launchpad-integration libaccountsservice0 libapt-inst1.4 libapt-pkg4.12 libart-2.0-2 libasound2 libatspi2.0-0 libbamf0 libbamf3-0 libbind9-80 libc-bin libc-dev-bin libc6 libc6-dev libcairo-gobject2 libcairo2

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• MapReduce

  - by kaleidoscope

  MapReduce is a programming model and an associated implementation for processing and generating large data sets. Users specify a map function that processes a key/value pair to generate a set of  intermediate key/value pairs, and a reduce function that merges all intermediate values associated with the same intermediate key. Many real world tasks are expressible in this model, as shown in the paper. Programs written in this functional style are automatically parallelized and executed on a large cluster of commodity machines. The run-time system takes care of the details of partitioning the input data,  scheduling the program's execution across a set of machines, handling machine failures, and managing the required inter-machine communication. This allows programmers without any experience with parallel and distributed systems to easily utilize the resources of a large distributed system. Example: A process to count the appearances of each different word in a set of documents void map(String name, String document):   // name: document name   // document: document contents   for each word w in document:     EmitIntermediate(w, 1); void reduce(String word, Iterator partialCounts):   // word: a word   // partialCounts: a list of aggregated partial counts   int result = 0;   for each pc in partialCounts:     result += ParseInt(pc);   Emit(result); Here, each document is split in words, and each word is counted initially with a "1" value by the Map function, using the word as the result key. The framework puts together all the pairs with the same key and feeds them to the same call to Reduce, thus this function just needs to sum all of its input values to find the total appearances of that word.   Sarang, K

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• How to install rgdal on Ubuntu 12.10?

  - by radek

  I'm strugling to install rgdal library on Ubuntu 12.10. Installation from within R results in error: Error: gdal-config not found The gdal-config script distributed with GDAL could not be found. If you have not installed the GDAL libraries, you can download the source from http://www.gdal.org/ If you have installed the GDAL libraries, then make sure that gdal-config is in your path. Try typing gdal-config at a shell prompt and see if it runs. If not, use: --configure-args='--with-gdal-config=/usr/local/bin/gdal-config' with appropriate values for your installation. ERROR: configuration failed for package ‘rgdal’ * removing ‘/home/rdk/R/x86_64-pc-linux-gnu-library/2.15/rgdal’ Warning in install.packages : installation of package ‘rgdal’ had non-zero exit status R-sig-Geo, this two SE questions and other websites pointed me to the requirements of libgdal1-dev. But when I tried sudo apt-get install libgdal1-dev I end up with another error message Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: libgdal1-dev : Depends: libgdal-dev but it is not going to be installed E: Unable to correct problems, you have held broken packages. Again - when I try to install libgdal-dev another dependencies error shows up The following packages have unmet dependencies: libgdal-dev : Depends: libgeos-dev but it is not going to be installed Depends: libspatialite-dev but it is not going to be installed Again trying libgeos-dev gives message: Depends: libgeos-c1 (= 3.3.3-1.1) but 3.3.3-2~precise2 is to be installed E: Unable to correct problems, you have held broken packages. and libspatialite-dev: Depends: libspatialite3 (= 3.1.0~rc2-1ubuntu1) but 3.1.0~rc2-2~precise1 is to be installed Is there any way to tame those dependencies and have rgdal running in Ubuntu? My sessionInfo() R version 2.15.1 (2012-06-22) Platform: x86_64-pc-linux-gnu (64-bit)

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• problems with installation of ubuntu 12.04 (64 and 32 bits)

  - by user76104

  I am a latinoamerican so.. sorry for my english I am trying to install ubuntu on my new pc but I have serious problems. When I put the installation cd and it runs, everything goes fine until that "window" when the user have to decide if want to try ubuntu or install it on the machine.. well that "window" apears in blank, and I see that my mouse and my keyboard turn really slowly and I can't do anything I have to shut it down by pressing power botton. The specification of my pc are this Gigabyte ex58 ud7 i7 950 wester digital caviar black 6gb memory corsair evga gtx580 Please i really neeed to install ubuntu or another linux distrubution, i am usign de sismic unix program on my laptop and well. it burns when i program a script! help! please :) what can i do..? what i have to download? i am not a pro in linux so please :( be pattient with me when it starts to load the achieve ubuntu environment to enter a menu with a graphical environment but I managed to get something sturdy and gave him to try ubuntu, started to load but freezes on the sign of ubuntu with red spots and only shows me the pointer not more ..... any other option? ps: had previously tried to install the alternate version of ubuntu not having success: S

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• Will BIOS boot mode Ubuntu install be able to boot when firmware "Fast Boot" is "Ultra Fast"?

  - by Pro Backup

  I have an AsRock mainboard with UEFI BIOS P1.50 02/14/2014. The firmware "Fast Boot" option is set to "Fast", Boot Option #1 is set to "AHCI P4: OCZ-VERT...": this is BIOS not UEFI boot. This boot disk has an MBR partitioning scheme (# parted -l | grep Partition\ Table:). Therefore Ubuntu 14.04 is installed in BIOS/CMS (Grub-PC) mode. The Ubuntu boot process ends in a text console (no GUI). There is no external graphics card in use. The stock Ubuntu kernel is replaced with Ubuntu supplied mainline 3.16.0-031600rc6-generic. dmesg outputs lines containing BIOS, like: SMBIOS 2.7 present Calgary: detecting Calgary via BIOS EBDA area Calgary: Unable to locate Rio Grande table in EBDA - bailing! [Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored BIOS EDD facility v0.16 2004-Jun-25, 0 devices found The ASRock BIOS it selves display this help text for "Ultra Fast - Fast Boot": Ultra Fast mode is only supported by Windows 8 and the VBIOS must support UEFI GOP if you are using an external graphics card. Please notice that Ultra Fast mode will boot so fast that the only way to enter this UEFI Setup Utility is to Clear CMOS or run the Restart to UEFI utility in Windows. Assumptions: I suspect after changing UEFI setting "Fast Boot" to "Ultra Fast" that the machine will no longer boot into Ubuntu's console. I expect when first exchanging "Grub-pc" with "Grub-efi", that the machine will still be able to boot to a grub menu (thus allowing to change the "Fast Boot" setting back to "Fast" without clearing CMOS). Are these two "Fast Boot" assumptions correct, and/or, may I expect Ubuntu 14.04 running mainline kernel 3.16rc6 and Grub-efi to still boot to console after enabling UEFI Ultra Fast Boot?

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• Oracle VM 3.1.1 build 365 released

  - by wcoekaer

  A few days ago we released a patch update for Oracle VM 3.1.1 (build 365). Oracle VM Manager 3.1.1 Build 365 is now available from My Oracle Support patch ID 14227416 Oracle VM Server 3.1.1 errata updates are, as usual, released on ULN in the ovm3_3.1.1_x86_64_patch channel. Just a reminder, when we publish errata for Oracle VM, the notifications are sent through the oraclevm-errata maillist. You can sign up here. Some of the bugfixes in 3.1.1 : 14054162 - Removes unnecessary locks when creating VNICs in a multi-threaded operation. 14111234 - Fixes the issue when discovering a virtual machine that has disks in a un-discovered repository or has un-discovered physical disks. 14054133 - Fixes a bug of object not found where vdisks are left stale in certain multi-thread operations. 14176607 - Fixes the issue where Oracle VM Manager would hang after a restart due to various tasks running jobs in the global context. 14136410 - Fixes the stale lock issue on multithreaded server where object not found error happens in some rare situations. 14186058 - Fixes the issue where Oracle VM Manager fails to discover the server or start the server after the server hardware configuration (i.e. BIOS) was modified. 14198734 - Fixes the issue where HTTP cannot be disabled. 14065401 - Fixes Oracle VM Manager UI time-out issue where the default value was not long enough for storage repository creation. 14163755 - Fixes the issue when migrating a virtual machine the list of target servers (and "other servers") was not ordered by name. 14163762 - Fixes the size of the "Edit Vlan Group" window to display all information correctly. 14197783 - Fixes the issue that navigation tree (servers) was not ordered by name. I strongly suggest everyone to use this latest build and also update the server to the latest version. have at it.

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• the OpenJDK group at Oracle is growing

  - by john.rose

  p.p1 {margin: 0.0px 0.0px 12.0px 0.0px; font: 12.0px Times} span.s1 {text-decoration: underline ; color: #0000ee} The OpenJDK software development team at Oracle is hiring. To get an idea of what we’re looking for, go to the Oracle recruitment portal and enter the Keywords “Java Platform Group” and the Location Keywords “Santa Clara”.  (We are a global engineering group based in Santa Clara.)  It’s pretty obvious what we are working on; just dive into a public OpenJDK repository or OpenJDK mailing list. Here is a typical job description from the current crop of requisitions: The Java Platform group is looking for an experienced, passionate and highly-motivated Software Engineer to join our world class development effort. Our team is responsible for delivering the Java Virtual Machine that is used by millions of developers. We are looking for a development engineer with a strong technical background and thorough understanding of the Java Virtual Machine, Java execution runtime, classloading, garbage collection, JIT compiler, serviceability and a desire to drive innovations. As a member of the software engineering division, you will take an active role in the definition and evolution of standard practices and procedures. You will be responsible for defining and developing software for tasks associated with the developing, designing and debugging of software applications or operating systems. Work is non-routine and very complex, involving the application of advanced technical/business skills in area of specialization. Leading contributor individually and as a team member, providing direction and mentoring to others. BS or MS degree or equivalent experience relevant to functional area. 7 years of software engineering or related experience.

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