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• Calculating instantaneous speed and acceleration for a simple Car software model

  - by Dylan

  I am trying to model a speedometer and tachometer for a simple software model of a car dashboard. I want this to be relatively simple, so for my purposes I won't likely simulate variables such as drag (or, assume that drag is a constant). But I would like to know the general formulas for: 1) Calculating the RPM, depending on a position of a graphical slider representing the accelerator. 2) Using this information to find the instantaneous speed (or, magnitude of instantaneous velocity?). I am not sure, in the case of 2), what other independent variables I need to consider. Do I need to consider the frequency of rotation of the wheels (assuming a fixed radius), in addition to the RPM? If anyone can give me a rough explanation plus relevant formulas, or alternatively direct me to other trusted resources online (I have had a hard time sifting through info and determining the accuracy), it would be much appreciated.

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• SharePoint Powers Hell

  - by Sahil Malik

  SharePoint, WCF and Azure Trainings: more information Really? No way! Must be a typo. Really I am going to talk about PowerShell in this session. And no this is not a PowerShell basics talk. This is a practical hands on talk where Sahil will demonstrate practical usage of PowerShell in both development and production environments. This is a must attend for both Devs and IT Pros. Where: Zagreb, Croatia, SPC Adriatics When: 10/15/2014 – 9:45AM – 10:45AM More info – Full Agenda http://spcadriatics.com/2014/agenda/ and Conference site - http://spcadriatics.com Read full article ....

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• How can I fix TTF fonts' ligatures (tt, ti, fi, ff, etc) in Firefox?

  - by Oli

  With certain Windows fonts there is a display issue where ligature-kerning seems to flip out and make the two letters bold. Here's a screenshot of an email using Helvetica in Firefox: As you can see, it seems to be something about the way crossed characters (t and f) connect to each other and letters like i. I've had this problem for a very long time (over multiple systems) and wondered if anybody has ever seen similar issues popping up and found a way to fix them. Note: I think this does just affect Firefox. Chrome and LibreOffice are both fine.

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• How does Blizzard manage to support Mac OS and Windows in their games?

  - by begray

  I've always thought, that using Direct X for Windows was the most powerful, easy and modern method to create games with modern graphics nowdays. And knowing, that it's only Windows I thinks it's pretty difficult to make something similar on other platforms (Mac OS to be exact). But Blizzard somehow managed to deliver Starcraft 2 for Mac OS, and Diablo 3 will be available for Mac too. So what I'm interested in is information about: what technologies are they using for their game engines? are they using one engine for both games (Starcraft 2 and Diablo 3)? Or develop custom for each game? what are they paying in terms of time and money for Mac OS support? Thanks

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• TypeScript Resources

  - by csmith18119

  TypeScript looks like a great start to evolving javascript.  I am going to start playing with it seeing what it is like.  This is the post I will update will all the resources I've found. Welcome to TypeScript - The TypeScript Language has an offical site, and this is it. This site does a nice job of giving the key information about the language and its uses, as well as highlighting that it is an open source project, which is cross platform. TypeScript is still causing quite a buzz in the community, here are some more of peoples initial impressions: Introducing TypeScript - Rob Eisenberg Why does TypeScript have to be the answer to anything? - Scott Hanselman TypeScript (or the obligatory post about it) - Shawn Wildermuth TypeScript project in Visual Studio 2012 - Linvi Microsoft TypeScript : A quick introduction and A Love Affair Begins here. - Anoop Madhusudanan Microsoft TypeScript : A Typed Superset of JavaScript & Using TypeScript in ASP.NET MVC Projects - Shiju Varghese Hello TypeScript - Getting Started - Sumit Maitra

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• "Unable to create OpenGL 3.3 context (flags 0, profile 1)"

  - by Tsvetan

  Trying to run any of the well-known McKesson's tutorials on a friend's laptop results in the aforementioned exception. I read that in order to run applications which use OpenGL 3.3 you must at least have an ATI HD or Nvidia 8xxx GPU series. He has an ATI HD class graphics processor which eliminates (maybe) this issue. Also, I read that this error may result in having old drivers. He updated his drivers but that didn't solve the problem. The tutorials are built as said in the book introduction and glsdk is installed. If more information is needed, say so and I will provide it. What are the other reasons for this kind of exception? And how can I fix them?

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• Twig Code Completion

  - by Ondrej Brejla

  Hi all! After few weeks we have a new feature for you which will be available in upcoming NetBeans 7.3. It's about new code completion in Twig files! So let us introduce it a bit. Now we hopefully support all of Twig built-in elements. It means Tags, Filters, Functions, Tests and Operators (see Twig documentation for more information). All elements are also documented, so if you don't know what which element does, just read it in the IDE documentation window! We try to resolve some Completion Context to suggest you only the most corresponding element types, but it's not so visible, since almost everything can be used everywhere in Twig files ;) And that's all for today and as usual, please test it and if you find something strange, don't hesitate to file a new issue (product php, component Twig). Thanks a lot!

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• Is extensive documentation a code smell?

  - by Griffin

  Every library, open-source project, and SDK/API I've ever come across has come packaged with a (usually large) documentation file, and this seems contradictory to the wide-spread belief that good code needs little to no comments. What separates documentation from this programming methodology? a one to two page overview of a package seems reasonable, but elegant code combined with standard intelisense should have theoretically deprecated the practice of documentation by now IMO. I feel like companies only create detailed documentation and tutorials because its what they've always done. Why should developers have to constantly be searching through online documentation in order to learn how to do things when such information should be intrinsic to the classes, methods and namespaces?

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• How to install an older version of Java

  - by Alex Spurling

  I updated my installation of the sun-java6-jdk package today to version 6.24-1build0.10.10.1 after being prompted by the update manager. However this now causes some compilation failures so I'd like to revert back to the previous version that I had installed. I've tried using Synaptic but the 'Force Version' menu command is disabled. I've tried the following command to install the previous version sudo apt-get install sun-java6-jdk=6.22-0ubuntu1~10.10 But I'm not sure that I have the correct version: Reading package lists... Done Building dependency tree Reading state information... Done E: Version ‘6.22-0ubuntu1~10.10’ for ‘sun-java6-jdk’ was not found I've taken this version number from this changelog: https://launchpad.net/ubuntu/+source/sun-java6/+changelog Is this the correct way to install a previous version of a package? Have I got the correct version from the sun-java6 change log?

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• Why do I have man pages of commands that don't exist?

  - by Robert Vila

  What is panel-test-applets for?? I don't know. But if I want to know I type: $ whatis panel-test-applets The answer is: panel-test-applets (1) - display installed applets I have the man page too, and I can read it: $ man panel-test-applets But there is no program with that name. Maybe the command is not very useful, but is its man page more useful? Does someone know how to install that program or what is its man page for when you cannot execute the program? I can't even execute the command: $ panel-test-applets nor $ panel-test-applets --help which is the only thing its man page talks about!!

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• ubuntu broke my windows boot

  - by Then Enok

  I was installing ubuntu on pendrive and once finished I needed to run windows a bit, even though I chose erase and install ON THE PENDRIVE it altered my hdd boot sector When I remove the ubu cd and pendrive it should only boot from hdd (windows) but it gives Error: no such device : blablabla(numerbes and letters) Grub rescue _ If I place the pendrive inside it asks me whether to start windows or linux (windows works here) I need to run windows without the pendrive, how can I remove grub from the hdd and also run ubuntu from the pendrive(once I remove grub from the hdd) || THX ArK, your information help me do wonders! :) || Now... it seems that without grub i can not boot the ubuntu from the pendrive anymore, blank screen and nothing loads(i did check the ubuntu with the grub from the hdd, and everything inside it worked perfectly (except the clock, it didnt find my local hour...) ) New problem: it seems that grub which is now on the pendrive is always asking me whether to boot from windows or ubuntu F*ck of course i want to boot ubuntu otherwise i would stick the pen inside the computer

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• Replace Broadcom "wl" driver with "b43"

  - by Laszlo Boros

  I'm using Ubuntu 10.04.4 LTS, and in my laptop there is a Broadcom BCM4312 wlan card. lspci output: 04:00.0 Network controller: Broadcom Corporation BCM4312 802.11b/g (rev 01) Subsystem: Broadcom Corporation Device 04b5 Flags: bus master, fast devsel, latency 0, IRQ 18 Memory at f4500000 (64-bit, non-prefetchable) [size=16K] Capabilities: [40] Power Management version 3 Capabilities: [58] Vendor Specific Information Capabilities: [e8] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable- Capabilities: [d0] Express Endpoint, MSI 00 Capabilities: [100] Advanced Error Reporting Capabilities: [13c] Virtual Channel Capabilities: [160] Device Serial Number 81-ac-1d-ff-ff-12-54-92 Capabilities: [16c] Power Budgeting Kernel driver in use: wl Kernel modules: wl, ssb So as you can see, the current (and default) driver is wl - installed with jockey. But I have another Ubuntu based distribution on my laptop (BackTrack linux), which is also 10.04, but it has the b43 driver installed and the overall performance is MUCH better. So I would like to install it on this OS too, but even google didn't help me. So my question is how to install the latest b43 driver on my Ubuntu?

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• How can I implement an EPUB reader in JavaScript?

  - by Vlad Nicula

  I'm wondering if I can create an EPUB (free and open e-book standard) reader in JavaScript. The basic requirements would be: Server parts of the EPUB reader from a server API. Read the EPUB data in JavaScript. Render it on page. Provide some extra functionality, like text highlights or page notes. I have no information about how I could do this. I'm willing to try a prototype project. What are the steps that I could take towards implementing such a thing?

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• Scripting with variables from file

  - by Nooster

  I have several videos on my PC that I would like to shorten. For instance I have a 30 sec video where I want to have the section from sec 15 to 20 (a 5sec video). To cut this, I use avconv. avconv -i input.mp4 -ss 15 -acodec copy -vcodec copy -t 5 output.mp4 This command works pretty well. I have many videos I want to cut the same way. This is why I created a textfile containing the information: input-name, start of cut, length of cut, output-name. Those are written into in.txt that looks like this: input.mp4 15 5 output.mp4 input1.mp4 32 10 output1.mp4 input2.mp4 10 7 output2.mp4 ... My question is: How do I have to modify the avconv-command to cut my videos automatically? What I tried was this, but it didn't work at all: avconv -i $1 -ss $2 -acodec copy -vcodec copy -t $3 $4 < in.txt Any idea?

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• Removing existing filtered pages from Google's index: noindex / 301 / canonical to non-filtered page?

  - by Noam

  I've decided to remove some of my site's pages from the Google index to focus more of the indexed pages on higher quality pages. The pages I'm going to remove are already in the index. These removed pages are filtered pages which will continue to exist, I just don't want them in the google index because they add little quality to the same page without any filter selected. I've added in webmaster tools specification of narrow for the parameters that set these filters, but it doesn't seem this changes anything in how he handles these pages. So I'm considering three options: Adding <meta name="robots" content="noindex" /> to the html header of these filtered pages 301 to the non-filtered page that contains the most similar information and will remain in the index Canonical tag. Which I'm not sure is exactly the mainstream use case, as these aren't really the same pages. Which should I use?

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• How can I install a package without installing some dependencies?

  - by Alex

  I'm trying to install the package LaTeXila, and the output looks like this: $ sudo apt-get install latexila --no-install-recommends Reading package lists... Done Building dependency tree Reading state information... Done The following extra packages will be installed: latexila-data latexmk luatex tex-common texlive-base texlive-binaries texlive-common texlive-doc-base texlive-latex-base Suggested packages: rubber texlive-latex-extra debhelper Recommended packages: texlive texlive-latex-recommended texlive-luatex lmodern texlive-latex-base-doc The following NEW packages will be installed: latexila latexila-data latexmk luatex tex-common texlive-base texlive-binaries texlive-common texlive-doc-base texlive-latex-base 0 upgraded, 10 newly installed, 0 to remove and 0 not upgraded. Need to get 29.3 MB of archives. After this operation, 74.5 MB of additional disk space will be used. Do you want to continue [Y/n]? I don't want to install the texlive packages. I've installed texlive manually from http://www.tug.org/texlive/. Any suggestions?

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• Software requirements specification, please help!

  - by Nicholas Chow

  For a school project, I had to create a SRS for a "fictional" application. However they did not show us what it exactly entails, and were very vague with explanations. The SRS asked of us has to have at least 5 functional requirements, 5 non functional requirements and 1 constraint. Now I have tried my best to make one however I think there are still a lot of mistakes in it. Could you all please look at it and provide me with some feedback on which parts I can improve or just tell me which parts are plain out wrong and how to make it better? (The project has a maximum of 12 pages so it is a bit long, I will post it below. FR1 Registration of Organizer FR1 describes the registration of an Organizer on CrowdFundum FR1.1 The system shall display a registration form on the website. FR1.2 The system shall require a Name, Username, Document number passport/ID card, Address, Zip code, City, Email address, Telephone number, Bank account, Captcha code on the registration form when a user registers.

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• Setup Convergence Address Book DisplayName Lookup

  - by user13332755

  At Convergence Address Book the default lookup for 'Display Name' is the LDAP attribute 'cn', which leads into confusion if you start to setup 'displayName' LDAP attributes for your users. LDAP User Entry with diaplyName attribute: This behavior can be controlled by the configuration file xlate-inetorgperson.xml. Change the default value of XPATH abperson\entry\displayname from 'cn' to 'displayName'. <convergence_deploy_location>/config/templates/ab/corp-dir/xlate-inetorgperson.xml Note: In case the user has no 'displayName' attribute in LDAP you might noticed '...' at the user entry, if found via 'mail' attribute.

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• Epsilon : An Oracle Customer Profile

  - by Anand Akela

  ZDNet published an article today based on the interview of Jeff White, vice president, technology, strategic database services at Epsilon. Jeff discussed Oracle Exadata Database Machine and Oracle Enterprise Manager with the ZDNet writer Dan Kusnetzky . Read the article  Epsilon : An Oracle Customer Profile . Jeff White, Epsilon VP, was honored with Oracle’s Data Warehouse Leader of the Year for Innovative Data Warehouse Deployment of Oracle Exadata and Oracle Enterprise Manager earlier this year. In one of the videos earlier this year, Jeff mentioned that Epsilon has streamlined IT administration, monitoring, and engineered systems maintenance with Oracle Enterprise Manager. Having gained in operational efficiencies, Epsilon is now providing greater efficiencies to its customers. For more information, please go to Oracle Enterprise Manager  web page or  follow us at :  Twitter | Facebook | YouTube | Linkedin | Newsletter

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• Are there any guidelines for laying out screen "real estate?"

  - by Corey

  I'm wondering if there is any information about creating a decent page layout so that your website will appeal to users of all resolutions. For example, the optimal width for pages. It seems like on my resolution, most websites have their content centered and covers about 80% of the page, which is easy on the eyes. Or maybe the height of the website's logo/header -- some sites I stumble upon have a huge logo with links or navigation under it, making it so that I need to scroll down to see the actual content, like articles or images (these sites don't keep me for very long). I understand that every user is different and may have browser extensions, page zoom or may be running some ancient system that displays in 640x480. I'm not looking for a "best" solution, but rather, some guidelines about designing to accommodate different resolutions. Basically, how can I make sure that I don't design a page where a paragraph might display in several easy-to-read lines on my resolution, but it turns into a single line on a 1920x1080 resolution and makes it hard for the user to follow?

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• HTG Explains: Why Do Hard Drives Show the Wrong Capacity in Windows?

  - by Chris Hoffman

  If you’ve ever purchased a computer with a hard disk capacity of 500 GB and opened Windows Explorer only to find that its capacity looked more like 440 GB, you may be wondering where all those gigabytes went. There are several reasons Windows could display the wrong amount of available space, from invisible shadow files, formatting overhead, and hidden recovery partitions to misleading (though technically accurate) storage capacities advertised by hard drive manufacturers. Image Credit: Norlando Pobre HTG Explains: Why Do Hard Drives Show the Wrong Capacity in Windows? Java is Insecure and Awful, It’s Time to Disable It, and Here’s How What Are the Windows A: and B: Drives Used For?

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• Windows Azure SDK 1.2 Available - .NET 4.0 Support

  - by Shaun

  The Windows Azure team had just announced the release of the latest version of its tools and SDK (v1.2) at the TechED 2010 New Orleans. You can download it here. The biggest new feature/improvement of this version of the SDK would be Visual Studio 2010 RTM and .NET 4.0 support. It gives us the facilities to build our azure-based applications on top of .NET 3.5 and 4.0 as well. So the guys who is working on, like me, or is going to be working on .NET 4 would better to have this SDK installed I think. Also there are some other information about the envolution of the Windows Azure at this TechED session you can find here.   Hope this helps, Shaun All documents and related graphics, codes are provided "AS IS" without warranty of any kind. Copyright © Shaun Ziyan Xu. This work is licensed under the Creative Commons License.

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• Ubuntu does not work with Nvidia drivers, gives random squares after logging in

  - by jimbo

  I tried installing both with wubi and by booting from a usb drive. After I tried both it was the same. Ubuntu tried to login, but after a while, a weird pattern with squarely shapes appeared. At one point, after using recovery mode and then the low graphics one (i don't remember how it was called exactly) i managed to get in. It still didn't display at correct resolution, and the mouse was invisible at times. However, after rebooting once, because i tried downloading the nvidia drivers, i didn't manage to get in again, so i have the same problem... I have no idea what to try to become unstuck. The main problem is that after the login, ubuntu crashes, with a screen full of randomly coloured squares. Should I just give up?

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• StorageTek SL8500 Release 8.3 available

  - by uwes

  Boosting Performance and Enhancing Reliability with StorageTek SL8500 Release 8.3! We’re pleased to announce the availability of SL8500 8.3 firmware, which supports partitioning for library complexes, library media validation, drive tray serial number reporting, and StorageTek T10000D tape drives! StorageTek SL8500 8.3 support the following: Library Complex Partitioning: Provides support for partitioning across an SL8500 library complex  Supports up to 16 partitions per library complex   Library Media Validation: Utilizing StorageTek Library Console, users can initiate media verifications with our StorageTek T10000C/D tape drives on StorageTek T10000 T1 and T2 media  Supports 3 scan options: basic verify, standard verify and complete verify Please read the Sales Bulletin (Firmware reales 8.31) on Oracle HW TRC for more details. (If you are not registered on Oracle HW TRC, click here ... and follow the instructions..) For More Information Go To: Oracle.com Tape Page Oracle Technology Network Tape Page

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• Learning and Developing with PHP [closed]

  - by KyelJmD

  I am here to ask you What is a good PHP Book that doesn't contain too much details but it is compose of all necessary information to develop in PHP such as (OO PHP, Handling Forms, Database etc etc) This may be subjective but I've tried to look php book recomendations here at Stackoverflow but I cannot find any. Next is What are the things I need to know in learning a PHp framework? specifically I want to learn CAKEPHP. NOTE I do not need those lenghty books that discuss loops and such I already have experience programming with java and C#.

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