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• Creuna Platform

  - by csharp-source.net

  Creuna Platform is a an open source web application framework based on Microsoft .NET and is fully written in C#. The aim for Creuna Platform is to make life easier for system developers by providing a highly competent component toolkit that increases the productivity and quality of a system. The framework contains components for data access, configuration handling, messaging and a broad range of utility classes, controls and services. The framework also has several components for the EPiServer CMS. Creuna Platform is licensed under Affero GNU General Public License Version 3.

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• What would you think of a job based on mostly doing the proof of concept?

  - by davsan

  I'm working as a developer in a small software company whose main job is interfacing between separate applications, like between a telephony system and an environment control system, between IP TVs and hospitality systems, etc...And it seems like I am the candidate for a new job title in the company, as the person who does the proof of concept of a new interfacing project and does some R&D for prototyping. What do you think the pros and cons of such a job would be, considering mainly the individual progress/regress of a person as a software engineer? And what aspects would you consider essential in a person to put him/her in such a job position?

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• Is it dangerous to substitute unit tests for user testing? [closed]

  - by MushinNoShin

  Is it dangerous to substitute unit tests for user testing? A co-worker believes we can reduce the manual user testing we need to do by adding more unit tests. Is this dangerous? Unit tests seem to have a very different purpose than user testing. Aren't unit tests to inform design and allow breaking changes to be caught early? Isn't that fundamentally different than determining if an aspect of the system is correct as a whole of the system? Is this a case of substituting apples for oranges?

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• What would I do to figure out why Suspend sometimes crashes?

  - by Isaac

  Something is causing suspend crash occasionally. When it does crash, the system freezes with a black screen and stays on, not suspending. This makes me have to hold the power button until the system shuts down. One setting difference I have from most people is, I don't use the option that lets you suspend when the laptop lid is closed. So opening and closing the laptop lid has no actions. I like to press suspend manually. Could this preference change be the cause? How can I start looking for what's causing the crash, since the crash doesn't display errors?

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• Uninstalling GRUB from MacBook Air

  - by James Brooke

  So... I have a MacBook Air and I recently tried to install Ubuntu on my external HD. I booted Ubuntu from a flash drive and everything had gone fine. I turned off my computer and when I turned it on again I got a message of error and a "grub rescue" line to enter some code. I rebooted holding the "option" key and I selected the Mac partition and everything is fine with my system, but every time I start my system and I don't hold the "option" key, I get the same error and the grub rescue message. I just want things to go back to normal, as they were before I installed Ubuntu on my external HD (which, btw, presented a message that said there was no boot loader). What do I do?

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• Where did my hard drive go?

  - by Mike Carron

  I installed XBMCbuntu 11.0 to my Zotac Zbox AD03 with an OCZ Reflex 4 256gb SSK. The install worked fine and I was getting accustomed to the appearance and operation. When I attempted to boot from power-off the BIOS could no longer find the SSD. It refused to boot and when I checked in the BIOS, the SSD was missing from the boot list (it was there prior to the install). I rebooted from the install CD but when the system started it could not find the SSD. I replaced the SSD with a fresh one of the same type and reinstalled XBMCbuntu. This time I rebooted from the system several times successfully but when I shut it down and tried to cold boot, this drive was also gone. Does the installation do something strange to the boot record that could cause a BIOS to lose it? How do I fix this? mike

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• Ubuntu desktop and dash problems

  - by user170163

  I am not sure if i have posted it to right place, so if no please don't judge me, I am a newbie. I installed Ubuntu 13.04 and I am happy with it. I have two OS's in dual boot. Ubuntu and Windows 7. in Ubuntu I have 2 problems. The first one is when I suspend my system I cannot resume it again. It sometimes show me the password screen (user names and etc. (sorry i don't know the exact name of it)) and sometimes just a blank screen. what can be the problem? The second one is this: When I hit ALT+F2 it looks like this ( but not always. when I restart the system everything is OK till about 30-40 minutes. and then it looks like this. Please help, I really like Ubuntu but these 2 problems ruin my plans about it. Thanks

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• What Precalculus knowledge is required before learning Discrete Math Computer Science topics?

  - by Ein Doofus

  Below I've listed the chapters from a Precalculus book as well as the author recommended Computer Science chapters from a Discrete Mathematics book. Although these chapters are from two specific books on these subjects I believe the topics are generally the same between any Precalc or Discrete Math book. What Precalculus topics should one know before starting these Discrete Math Computer Science topics?: Discrete Mathematics CS Chapters 1.1 Propositional Logic 1.2 Propositional Equivalences 1.3 Predicates and Quantifiers 1.4 Nested Quantifiers 1.5 Rules of Inference 1.6 Introduction to Proofs 1.7 Proof Methods and Strategy 2.1 Sets 2.2 Set Operations 2.3 Functions 2.4 Sequences and Summations 3.1 Algorithms 3.2 The Growths of Functions 3.3 Complexity of Algorithms 3.4 The Integers and Division 3.5 Primes and Greatest Common Divisors 3.6 Integers and Algorithms 3.8 Matrices 4.1 Mathematical Induction 4.2 Strong Induction and Well-Ordering 4.3 Recursive Definitions and Structural Induction 4.4 Recursive Algorithms 4.5 Program Correctness 5.1 The Basics of Counting 5.2 The Pigeonhole Principle 5.3 Permutations and Combinations 5.6 Generating Permutations and Combinations 6.1 An Introduction to Discrete Probability 6.4 Expected Value and Variance 7.1 Recurrence Relations 7.3 Divide-and-Conquer Algorithms and Recurrence Relations 7.5 Inclusion-Exclusion 8.1 Relations and Their Properties 8.2 n-ary Relations and Their Applications 8.3 Representing Relations 8.5 Equivalence Relations 9.1 Graphs and Graph Models 9.2 Graph Terminology and Special Types of Graphs 9.3 Representing Graphs and Graph Isomorphism 9.4 Connectivity 9.5 Euler and Hamilton Ptahs 10.1 Introduction to Trees 10.2 Application of Trees 10.3 Tree Traversal 11.1 Boolean Functions 11.2 Representing Boolean Functions 11.3 Logic Gates 11.4 Minimization of Circuits 12.1 Language and Grammars 12.2 Finite-State Machines with Output 12.3 Finite-State Machines with No Output 12.4 Language Recognition 12.5 Turing Machines Precalculus Chapters R.1 The Real-Number System R.2 Integer Exponents, Scientific Notation, and Order of Operations R.3 Addition, Subtraction, and Multiplication of Polynomials R.4 Factoring R.5 Rational Expressions R.6 Radical Notation and Rational Exponents R.7 The Basics of Equation Solving 1.1 Functions, Graphs, Graphers 1.2 Linear Functions, Slope, and Applications 1.3 Modeling: Data Analysis, Curve Fitting, and Linear Regression 1.4 More on Functions 1.5 Symmetry and Transformations 1.6 Variation and Applications 1.7 Distance, Midpoints, and Circles 2.1 Zeros of Linear Functions and Models 2.2 The Complex Numbers 2.3 Zeros of Quadratic Functions and Models 2.4 Analyzing Graphs of Quadratic Functions 2.5 Modeling: Data Analysis, Curve Fitting, and Quadratic Regression 2.6 Zeros and More Equation Solving 2.7 Solving Inequalities 3.1 Polynomial Functions and Modeling 3.2 Polynomial Division; The Remainder and Factor Theorems 3.3 Theorems about Zeros of Polynomial Functions 3.4 Rational Functions 3.5 Polynomial and Rational Inequalities 4.1 Composite and Inverse Functions 4.2 Exponential Functions and Graphs 4.3 Logarithmic Functions and Graphs 4.4 Properties of Logarithmic Functions 4.5 Solving Exponential and Logarithmic Equations 4.6 Applications and Models: Growth and Decay 5.1 Systems of Equations in Two Variables 5.2 System of Equations in Three Variables 5.3 Matrices and Systems of Equations 5.4 Matrix Operations 5.5 Inverses of Matrices 5.6 System of Inequalities and Linear Programming 5.7 Partial Fractions 6.1 The Parabola 6.2 The Circle and Ellipse 6.3 The Hyperbola 6.4 Nonlinear Systems of Equations

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• Laptop resumes from suspend while lid is closed

  - by Gus

  I have a Dell Studio 15 and I am running Ubuntu 10.10. When I close my lid or select the suspend option, the machine suspends as indicated by the slowly pulsing power indicator. I'll put the machine in my bag and after a while it seems that the machine resumes, at least I think. When ever I go to get it, it's overheated and the system cannot resume. I am guessing that the processor resets in this overheat condition, but heat is still generated. This has happened about three times and I'm getting worried that I'll end up damaging the machine. How can I diagnose why the system is resuming from suspend? Can I force it to never resume from suspend if the lid is down?

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• Multicore Expo

  Event to be held in conjunction with ESC Multi-core processor - Central processing unit - Parallel computing - X86 - Operating system

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• Why don't I have the option ''Install Ubuntu alongside with them''

  - by almqgh

  Why dont I have this option? here are my disk sudo fdisk -l Disk /dev/sda: 640.1 GB, 640135028736 bytes 255 heads, 63 sectors/track, 77825 cylinders, total 1250263728 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x5b53cc54 Device Boot Start End Blocks Id System /dev/sda1 * 2048 409599 203776 7 HPFS/NTFS/exFAT /dev/sda2 409600 1153767021 576678711 7 HPFS/NTFS/exFAT /dev/sda3 1216962560 1250050047 16543744 7 HPFS/NTFS/exFAT /dev/sda4 1250050048 1250261679 105816 c W95 FAT32 (LBA) Disk /dev/sdb: 4005 MB, 4005527552 bytes 32 heads, 63 sectors/track, 3880 cylinders, total 7823296 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x20d8782d Device Boot Start End Blocks Id System /dev/sdb1 * 63 7822079 3911008+ c W95 FAT32 (LBA)

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• Is there a cross-platform special directory I can use for game save files?

  - by Suds

  I'm developing with LWJGL and Java on a Windows 7 laptop. I've successfully set up saving to the %appdata%\gamename\saves\ or long form c:\users\user\appdata\roaming\gamename\saves\ folder by using File dir = new File(System.getenv("APPDATA") + "\\gamename\\saves\\");. I have hobbyist level experience with Linux, and zero experience with OSX. My game will be fully cross platform. Is System.getenv("APPDATA"); cross platform? If so, where does it point to on Linux or OSX? Is there a best practices alternative that I should use?

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• where to define variable for a for each loop?

  - by David

  can you please advise me why my first code attempt didn't work : public void listAllFiles() { for(String filename : files) { int position = 0; System.out.println(position + ": " + filename); position = position + 1; } } it kept printing position at 0 without iterating position but it seems to work after i did it this way: public void listAllFiles() { int position = 0; for(String filename : files) { System.out.println(position + ": " + filename); position = position + 1; } } I don't understand why the position + 1 was not being executed, is it because we are not meant to define variables inside for loops or am i missing something in my code.

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• jungledisk 3.16 doesn't launch

  - by Angelo

  Has anyone had success with jungledisk 3.16 on ubuntu 11.10? I installed it from the .deb file provided by jungledisk. The install goes fine, but I can't get the "jungle disk desktop" app to launch. It appears in the dash search bar, but doesn't launch or do anything upon selecting it. When I try the command line, I get the following... me@myComputer:~$ jungledisk -V -f Verbose mode enabled Shutting down... me@myComputer:~$ What's the deal here? Anybody else experience this? Does anyone have suggestions for what to try? I opened up a help-ticket with jungledisk, but they just asked me for which ubuntu version and which gui I was using and then went silent. I've used jungledisk since 2008 and had no problems. It is sad that it is not working on the new ubuntu for me. Should I just quit them and use dropbox or one? (those seem to be working)

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• GLIBC_2.8 not found

  - by Thomas Nilsson

  As a newbie I seem to have messed up my upgrade leaving my system in a very unstable state. I attempted an upgrade from 8.04LTS which ended in an error about libc and kernel upgrades. I tried to upgrade the kernel but am now unsure if that worked, because when I retried my dist-upgrade there was a lot of errors about pre-dependencies and leaving packages un-configured. Now I have a system that answers almost every command with: /lib/libc.so.6: version `GLIBC_2.8' not found (required by /lib/libselinux.so.1) I probably should try a complete re-installation, but I'm investigating if there is any possibility of getting a working glibc so that I at least can have some commands working to ensure that my backups are recent etc. before doing the clean install. not even 'ls' works without saying "glibc_2.8 not found".

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• What approaches can I take to lower the odds of introducing new bugs in a complex legacy app?

  - by m.edmondson

  Where I work I often have to develop (and bug fix) in an old system (.NET 1) whos code is complete spaghetti - with little thought given to variable names, program structure nor comments. Because of this it takes me ages to understand what bits need changed, and I often 'break' the existing software because I've made a modification. I really really want to spend a couple of months (with colleagues) going through it to refactor but existing developers both can't see the need - nor think theres time for this (the system is massive). I dread having to work on its code as it takes days to fix something only to find out I've broken something else. This obviously makes me look incompetent - so how can I deal with this?

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• eSTEP Newsletter October 2012 now available

  - by uwes

  Dear Partners,We would like to inform you that the October '12 issue of our Newsletter is now available.The issue contains information to the following topics:News from CorpOracle Announces Oracle Solaris 11.1 at Oracle OpenWorld; Oracle Announces Oracle Exadata X3 Database In-Memory Machine; Oracle Enterprise Manager 12c introduces New Tools and Programs for Partners; Oracle Unveils First Industry-Specific Engineered System - the Oracle Networks Applications Platform,;  Oracle Unveils Expanded Oracle Cloud Offerings; Oracle Outlines Plans to Make the Future Java During JavaOne 2012 Strategy Keynote; Some interesting Java Facts and Figures; Oracle Announces MySQL 5.6 Release Candidate Technical Section What's up with LDoms (4 tech articles); Oracle SPARC T4 Systems cut Complexity, cost of Cryptographic Tasks; PeopleSoft Enterprise Financials 9.1; PeopleSoft HCM 9.1 combined online and batch benchmark,; Product Update Bulletin Oracle Solaris Cluster Oct 2012; Sun ZFS Storage 7420; SPARC Product Line Update; SPARC M-series -  New DAT 160 plus EOL of M3000 series; SPARC SuperCluster and SPARC T4 Servers Included in Enterprise Reference Architecture Sizing Tool; Oracle MagazineLearning & EventsRecently delivered Techcasts: An Update after the Oracle Open World, An Update on OVM Server for SPARC; Update to Oracle Database ApplianceReferencesBridgestone Aircraft Tire Reduces Required Disk Capacity by 50% with Virtualized Storage Solution; Fiat Group Automobiles Aligns Operational Decisions with Strategy by Using End-to-End Enterprise Performance Management System; Birkbeck, University of London Develops World-Class Computer Science Facilities While Reducing Costs with Ultrareliable and Scalable Data Infrastructure How toIntroducing Oracle System Assistant; How to Prepare a ZFS Storage Appliance to Serve as a Storage Device; Migrating Oracle Solaris 8 P2V with Oracle Database 10.2 and ASM; White paper on Best Practices for Building a Virtualized SPARC Computing Environment, How to extend the Oracle Solaris Studio IDE with NetBeans Plug-Ins; How I simplified Oracle Database 11g Installation on Oracle Linux 6You find the Newsletter on our portal under eSTEP News ---> Latest Newsletter. You will need to provide your email address and the pin below to get access. Link to the portal is shown below.URL: http://launch.oracle.com/PIN: eSTEP_2011Previous published Newsletters can be found under the Archived Newsletters section and more useful information under the Events, Download and Links tab. Feel free to explore and any feedback is appreciated to help us improve the service and information we deliver.Thanks and best regards,Partner HW Enablement EMEA

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• Ubuntu 12.04 boot freezes

  - by Lajos Soukup

  I installed win7 on one of my machines. It works without any problem. Now I can not install Ubuntu 12.04 (11.10, 11.04) because the installation process stops in a very early stage: I can see that ISOLinux was loaded, then I can see some very simple icons, then I can see text messages of the kernel. The last message I can see: [6.177983] sr 5:0:0:0: attached scsi general ss1 type 5 At that point the system stops. I tried different versions (11.04) , I disabled, and then disconnected the hdd, but the same problem occured independently from my actions. I can boot a gparted live cd, but that system can not see my hdd. On the other hand, I can boot the installation cd of the latest stable Debian distribution without any problem, but I would prefer to use Ubuntu, because I use that distribution on all of our machines.s Configuration: Asus P8H61-MLE motheboard, Gigabyte GTS 450, Intel i5, 4gb ram, wd 1T sata hdd Any idea? Best regards, Lajos

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• HTG Explains: Is ReadyBoost Worth Using?

  - by Chris Hoffman

  Connect a USB stick to a Windows computer – even on Windows 8 – and Windows will ask if you want to speed up your system using ReadyBoost. But what exactly is ReadyBoost, and will it actually speed up your computer? ReadyBoost was introduced in Windows Vista, where it was a heavily promoted feature. Unfortunately, ReadyBoost isn’t a silver bullet that will make your computer faster, although it may be useful in some limited circumstances. HTG Explains: Is ReadyBoost Worth Using? HTG Explains: What The Windows Event Viewer Is and How You Can Use It HTG Explains: How Windows Uses The Task Scheduler for System Tasks

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• 12.04 - how to install alsa 1.0.27, to resolve dell sound card microphone echo issue to local speaker?

  - by YumYumYum

  Problem: Microphone in or Line in microphone audio is instantly captured and sinked to the local speaker, cause horrible echo problem About my system: (NO PulseAudio used (cause its always crash and unstable for my system/hardware, so auto killed and never used) I have ALSA 1.0.25 version running in Ubuntu 12.04 / 64-bit, with random kernel installed: kernel 3.5.0-17-generic kernel 3.8.x kernel 3.11.x But the echo problem is not resolved after trying all kernel. So, last option left now is to use ALSA 1.0.27 to see if that solves the problem. Is there any away to use ALSA 1.0.27 from any PPA to install in the Ubuntu 12.04? (without making it from source, to avoid breaking other packages and dependencies)

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• Only close button shows up in Google Chrome in GNOME Shell

  - by TreefrogInc

  After I installed the GNOME shell in Ubuntu, I decided that I didn't like having the "Close/Minimize/Maximize" buttons on the right, so I switched them over to the left using gconftool-2 --set "/apps/metacity/general/button_layout" --type string "close, minimize, maximize:" After resetting the shell, however, I found that with the GTK+ theme, only the close button shows up. Using system title bar and borders will make all the buttons appear, but I really want to use the theme because the system title bar makes the top bar too thick. Logging out and back in didn't fix it, and I tried reinstalling Chrome, but the problem persists.

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• Boot-up hangs unless I manually select the kernel in the bootloader

  - by The Photon

  In my stock Ubuntu install (forgot which critter its named for, about one year old), I am able to boot up normally only if I manually select the kernel in the bootloader (Grub). If I step away and it boots from the default, the system will hang with the word "Ubuntu" on a graphics screen and a few white/red blinking dots beneath it. umb@digdug:~$ uname -a Linux digdug 2.6.32-42-generic #95-Ubuntu SMP Wed Jul 25 15:57:54 UTC 2012 i686 GNU/Linux Synaptics says I have 'grub-pc' version 1.98-1ubuntu-13 installed. My grub.cfg does have default="0" which I would expect to make the default be the first kernel shown in the selection screen. The system is a laptop with an i7 processor, and I have had trouble with some kernels not being able to boot at all in the past, and power management is not working perfectly, but I have not had problems booting the latest kernel (2.6.32-42) if I select it manually in Grub. Any idea what is going on here and how can I fix it so that I can re-boot unattended?

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• C# WebForms and Ninject

  - by ipohfly

  I'm re-working on the design of an existing application which is build using WebForms. Currently the plan is to work it into a MVP pattern application while using Ninject as the IoC container. The reason for Ninject to be there is that the boss had wanted a certain flexibility within the system so that we can build in different flavor of business logic in the model and let the programmer to choose which to use based on the client request, either via XML configuration or database setting. I know that Ninject have no need for XML configuration, however I'm confused on how it can help to dynamically inject the dependency into the system? Imagine I have a interface IMember and I need to bind this interface to the class decided by a xml or database configuration at the launch of the application, how can I achieve that?

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• xmonad keyboard doesn't work

  - by Mikkel Paulson

  I'm experimenting with xmonad, which I installed from the Ubuntu Software Centre on Ubuntu 12.10. It looks cool, but when I invoke it (using xmonad --replace from the command line) my title bars disappear and my keyboard stops working. At all. The terminal stops working, the keystrokes I've seen in online "getting started" guides are ignored, and the only way for me to actually power the system off is to hit the reset button or ssh in from my phone. Ironically, my mouse still works. One guide I saw suggested replacing the default window environment with xmonad, but I'm afraid of rendering my system completely inoperable if I do that. Any suggestions?

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• Is it possible to allow the user to access the 'Volumes' without asking the Administrator's password?

  - by Tom

  Am the administrator of my Ubuntu system. Recently I added a new user account. But when ever the user tries to access or open the 'Volumes'(Drives where movies, songs and other files are stored) it asks for the Administrator's password. I created the user account to my other family members and I don't want to tell them my password. So is it possible to allow them to access the Volumes without asking Administrator's password ? UPDATE : Ubuntu was installed alongside Windows in my system. I will provide a screenshot of the Volume details -

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