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• IMAP and Folder Subscriptions

  - by tom

  Hey guys I'm trying to figure out how folder subscriptions work with IMAP Clients and, in my case, in an Exchange 2007 environment. I have managed to deduce, I think correctly, that the folder subscription settings for individuals are stored centrally on the mailbox (At least, having configured 2 profiles on thunderbird, on 2 different machines, they subscribe to the exact same folders and dont display the exact same ones). The point of this being that I have had 2 or 3 different people in the past day report to me that they are having problems subscribing to certain folders, and having certain folder subscriptions remembered (particularly sub-folders). This is across both Thunderbird 2 and 3. can anyone suggest anything? Tom

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• I need something substantial to do [on hold]

  - by Christian Delapena

  I'm a 19 year old computer geek who was recently exposed to Linux. I know quite a bit of it now and would like to do something substantial with it. I've visited websites like openhatch where you can get started on opensource projects but I'm more interested in something Linux-specific like hosting a website or tracking some important operation. Maybe running a script that will give me data on something important. I don't know. I'm essentially bored and I want to put my knowledge and love of Linux to good use. Someone please point me in the right direction.

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• Driver choice for addressing ubuntu wireless card issues

  - by Holly

  Hello, this should be a relatively simple question. I'm attempting to get my windows wireless card to work with ubuntu, booted from my portable hard drive. This is the guide I'm attempting to follow is on help.ubuntu.com, /community/WifiDocs/Driver/Ndiswrapper My wireless card is a Broadcom Corporation BCM4318 AirForce One 54g 802.11g Wireless LAN Controller. My computer is an HP Pavilion Entertainment dv5 notebook, which came with Vista 64. I would like confirmation about which of the drivers I should use. At this point, I'm leaning towards Broadcom BCM4318 HP Pavilion zv6000, but I thought it best to ask advice before taking action. The drivers I have to chose from are listed on this page http://sourceforge.net/apps/mediawiki/ndiswrapper/index.php?title=Category:Broadcom Thanks! Holly

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• CodePlex Daily Summary for Tuesday, August 28, 2012

  CodePlex Daily Summary for Tuesday, August 28, 2012Popular ReleasesImageServer: v1.1: This is the first version releasedChristoc's DotNetNuke Module Development Template: DotNetNuke Project Templates V1.1 for VS2012: This release is specifically for Visual Studio 2012 Support, distributed through the Visual Studio Extensions gallery at http://visualstudiogallery.msdn.microsoft.com/ Check out the blog post for all of the details about this release. http://www.dotnetnuke.com/Resources/Blogs/EntryId/3471/New-Visual-Studio-2012-Project-Templates-for-DotNetNuke.aspx If you need a project template for older versions of Visual Studio check out our previous releases.Home Access Plus+: v8.0: v8.0828.1800 RELEASE CHANGED TO BETA Any issues, please log them on http://www.edugeek.net/forums/home-access-plus/ This is full release, NO upgrade ZIP will be provided as most files require replacing. To upgrade from a previous version, delete everything but your AppData folder, extract all but the AppData folder and run your HAP+ install Documentation is supplied in the Web Zip The Quota Services require executing a script to register the service, this can be found in there install di...Math.NET Numerics: Math.NET Numerics v2.2.0: Major linear algebra rework since v2.1, now available on Codeplex as well (previous versions were only available via NuGet). Also available as NuGet packages: PM> Install-Package MathNet.Numerics PM> Install-Package MathNet.Numerics.FSharp New: instead of the special Silverlight build we now provide a portable version supporting .Net 4, Silverlight 5 and .Net Core (WinRT) 4.5: PM> Install-Package MathNet.Numerics.PortablePhalanger - The PHP Language Compiler for the .NET Framework: 3.0.0.3391 (September 2012): New features: Extended ReflectionClass libxml error handling, constants TreatWarningsAsErrors MSBuild option OnlyPrecompiledCode configuration option; allows to use only compiled code Fixes: ArgsAware exception fix accessing .NET properties bug fix ASP.NET session handler fix for OutOfProc mode Phalanger Tools for Visual Studio: Visual Studio 2010 & 2012 New debugger engine, PHP-like debugging Lot of fixes of project files, formatting, smart indent, colorization etc. Improved ...WatchersNET CKEditor™ Provider for DotNetNuke®: CKEditor Provider 1.14.06: Whats New Added CKEditor 3.6.4 oEmbed Plugin can now handle short urls changes The Template File can now parsed from an xml file instead of js (More Info...) Style Sets can now parsed from an xml file instead of js (More Info...) Fixed Showing wrong Pages in Child Portal in the Link Dialog Fixed Urls in dnnpages Plugin Fixed Issue #6969 WordCount Plugin Fixed Issue #6973 File-Browser: Fixed Deleting of Files File-Browser: Improved loading time File-Browser: Improved the loa...MabiCommerce: MabiCommerce 1.0.1: What's NewSetup now creates shortcuts Fix spelling errors Minor enhancement to the Map window.ScintillaNET: ScintillaNET 2.5.2: This release has been built from the 2.5 branch. Version 2.5.2 is functionally identical to the 2.5.1 release but also includes the XML documentation comments file generated by Visual Studio. It is not 100% comprehensive but it will give you Visual Studio IntelliSense for a large part of the API. Just make sure the ScintillaNET.xml file is in the same folder as the ScintillaNET.dll reference you're using in your projects. (The XML file does not need to be distributed with your application)....WinRT XAML Toolkit: WinRT XAML Toolkit - 1.2.0: WinRT XAML Toolkit based on the Windows 8 RTM SDK. Download the latest source from the SOURCE CODE page. For compiled version use NuGet. You can add it to your project in Visual Studio by going to View/Other Windows/Package Manager Console and entering: PM> Install-Package winrtxamltoolkit Features AsyncUI extensions Controls and control extensions Converters Debugging helpers Imaging IO helpers VisualTree helpers Samples Recent changes NOTE: Namespace changes DebugConsol...BlackJumboDog: Ver5.7.1: 2012.08.25 Ver5.7.1 (1)?????·?????LING?????????????? (2)SMTP???（????）????、?????\?????????????????????Visual Studio Team Foundation Server Branching and Merging Guide: v2 - Visual Studio 2012: Welcome to the Branching and Merging Guide Quality-Bar Details Documentation has been reviewed by Visual Studio ALM Rangers Documentation has been through an independent technical review Documentation has been reviewed by the quality and recording team All critical bugs have been resolved Known Issues / Bugs Spelling, grammar and content revisions are in progress. Hotfix will be published.Microsoft Ajax Minifier: Microsoft Ajax Minifier 4.62: Fix for issue #18525 - escaped characters in CSS identifiers get double-escaped if the character immediately after the backslash is not normally allowed in an identifier. fixed symbol problem with nuget package. 4.62 should have nuget symbols available again. Also want to highlight again the breaking change introduced in 4.61 regarding the renaming of the DLL from AjaxMin.dll to AjaxMinLibrary.dll to fix strong-name collisions between the DLL and the EXE. Please be aware of this change and...nopCommerce. Open source shopping cart (ASP.NET MVC): nopcommerce 2.65: As some of you may know we were planning to release version 2.70 much later (the end of September). But today we have to release this intermediate version (2.65). It fixes a critical issue caused by a third-party assembly when running nopCommerce on a server with .NET 4.5 installed. No major features have been introduced with this release as our development efforts were focused on further enhancements and fixing bugs. To see the full list of fixes and changes please visit the release notes p...MyRouter (Virtual WiFi Router): MyRouter 1.2.9: . Fix: Some missing changes for fixing the window subclassing crash. · Fix: fixed bug when Run MyRouter at the first Time. · Fix: Log File · Fix: improve performance speed application · fix: solve some Exception.Private cloud DMS: Essential server-client full package: Requirements: - SQL server >= 2008 (minimal Express - for Essential recommended) - .NET 4.0 (Server) - .NET 4.0 Client profile (Client) This version allow: - full file system functionality Restrictions: - Maximum 2 parallel users - No share spaces - No hosted business groups - No digital sign functionality - No ActiveDirectory connector - No Performance cache - No workflow - No messagingJavaScript Prototype Extensions: Release 1.1.0.0: Release 1.1.0.0 Add prototype extension for object. Add prototype extension for array.Glyphx: Version 1.2: This release includes the SdlDotNet.dll dependency in the setup, which you will need.TFS Project Test Migrator: TestPlanMigration v1.0.0: Release 1.0.0 This first version do not create the test cases in the target project because the goal was to restore a Test Plan + Test Suite hierarchy after a manual user deletion without restoring all the Project Collection Database. As I discovered, deleting a Test Plan will do the following : - Delete all TestSuiteEntry (the link between a Test Suite node and a Test Case) - Delete all TestSuite (the nodes in the test hierarchy), including root TestSuite - Delete the TestPlan Test c...ERPStore eCommerce FrontOffice: ERPStore.Core V4.0.0.2 MVC4 RTM: ERPStore.Core V4.0.0.2 MVC4 RTM (Code Source)ZXing.Net: ZXing.Net 0.8.0.0: sync with rev. 2393 of the java version improved API, direct support for multiple barcode decoding, wrapper for barcode generating many other improvements and fixes encoder and decoder command line clients demo client for emguCV dev documentation startedNew ProjectsA Constraint Propogation Solver in F#: An experimental implementation of the Variable Consistency "Bucket Elimination" algorithm for constraint propogationAirline Pilot Academy: Taller de Sistemas de Información - UCB ArchiveManageSys: Something about archive managementCriteria Workflow Engine: A C++ Workflow Engine: Desing and execute business process.DnnDash Service: The DnnDash project enables administrators of DotNetNuke websites to view any installed DotNetNuke Dashboard components via other devices.Dynamics NAV UniWPF Addin: This project is Addin control for Microsoft Dynamics NAV 2009, allowing developers to put WPF controls directly to NAV page.Essai Salon de Chat: petit projet de communication basé sur une structure server / client(multi)High performance C# byte array to hex string to byte array: The performance key point for each to/from conversion is the (perpetual) repetition of the same if blocks and calculations...ImageCloudLock Backup Solution: ImageCloudLock 2012 is designed to backup your important items, like photos, financial documents, PDFs, excel documents and personal items to the Cloud service.Login with Facebook in ASP.Net MVC3 & Get data from Facebook User: This project is useful for ASP.Net MVC developer. For login with Facebook in ASP.Net MVC3 & Get data from user's facebook account.Lucy2D: Projet for developing 2D Games based on WPF and XNA. The point is to minimize effort for developers and fast prototyping.Main Street: Human Resources software for small business. Using C# and SQL Server Express.ManagedZFS: A managed implementation of the ZFS filesystem. Reliability, performance, and manageability. Also, *block-pointer rewrite* !!!Metro English Persian Dictionary: This is an English - Persian (Farsi) dictionary designed and developed for Windows 8 Metro User Interface which contains over 50000 words. My Personal Site: My Personal SiteNeverball Framework: Neverball FrameworkSample code: This project is simple a common location for me to store project skeletons and snippets for help bootstrapping other projects.Smart Card Fuzzer: SCFuzz is a smart card middleware fuzz testing tool (fuzzer). Using API hooking, SCFuzz modifies data returned by the card in order to find bugs in the host.Test Activation: Start looking into it.Vector, a .net generic collection to use instead of a List - in niche cases.: The Vector can be used as a replacement for a List if a large number of elements must be stored, and element inserts and deletes are frequent.WCF duplex Message: This is test project uses WCF to implement message broadcast.WCF! WTF?: Getting to know WCFZune to Lync Now Playing: Zune to Lync Now Playing is a simple application that let you display on your Lync Personal Note, the current song playing in Zune Player.

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• Handling SEO for Infinite pages that cause external slow API calls

  - by Noam

  I have an 'infinite' amount of pages in my site which rely on an external API. Generating each page takes time (1 minute). Links in the site point to such pages, and when a users clicks them they are generated and he waits. Considering I cannot pre-create them all, I am trying to figure out the best SEO approach to handle these pages. Options: Create really simple pages for the web spiders and only real users will fetch the data and generate the page. A little bit 'afraid' google will see this as low quality content, which might also feel duplicated. Put them under a directory in my site (e.g. /non-generated/) and put a disallow in robots.txt. Problem here is I don't want users to have to deal with a different URL when wanting to share this page or make sense of it. Thought about maybe redirecting real users from this URL back to the regular hierarchy and that way 'fooling' google not to get to them. Again not sure he will like me for that. Letting him crawl these pages. Main problem is I can't control to rate of the API calls and also my site seems slower than it should from a spider's perspective (if he only crawled the generated pages, he'd think it's much faster). Which approach would you suggest?

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• multi user web game with scheduled processing?

  - by Rooq

  I have an idea for a game which I am in the process of designing, but I am struggling to establish if the way I plan to implement it is possible. The game is a text based sports management simulation. This will require players to take certain actions through a web browser which will interact with a database - adding/updating and selecting. Most of the code required to be executed at this point will be fairly straightforward. The main processing will take place by applications which are scheduled to run on the server at certain times. These apps will process transactions added by the players and also perform some automatic processing based on the game date. My plan was to use an SQL server database (at last count I require about 20 tables) and VB.net for all the coding (coming from a mainframe programming background this language is the simplist for me to get to grips with). I will also need a scheduling tool on the server. Can anyone tell me if what I am planning is feasible before I dive into the actual coding stage of my project?

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• How to extend Wi-Fi signal across rooms?

  - by Sriram Krishnan

  I moved into a new place and my old Wi-Fi router just doesn't have the range to get into all the rooms. I've been investigating a lot of options and I'm wondering what other folks have done here. Moving the current location of my primary Wi-Fi router is not an option thanks to our cable provider and our landlord. Buy a bigger, beefier router (seems expensive). If so, should I go for one of those draft 802.11n ones to avoid microwave/other Wi-Fi router interference? Set up a router with DD-WRT as a repeater Leech the neighbors' open Wi-Fi access point. Alright, I was kidding about the last one but I'm genuinely curious as to what my best option is.

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• Windows 7 offline files - work temporarily offline even if network connection works

  - by Robert

  Sometimes I am connected via VPN to a network containing the server where files are stored which are cached by Windows offline files feature. Sometimes the connection works good and working this way is not a problem - on other times working is quite a pain because of high latency when working with the files in the Windows explorer. Is there an interactive way how a user (with admin permissions) can temporary suspend online usage of offline files? I already activated the "Transparent caching" group policy feature (Computer Configuration Policies Administrative Templates Networks Offline Files) with a network latency of 200msec but from my experience even if I get ping times to the file server of less than 40msec online usage is quite tenacious. Setting low latency times at this point causes the offline files often to toggle which makes problems with some applications working with several files and requires them to be consistent (like SVN client).

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• Good Scoop: The PeopleSoft/IBM Backstory

  - by [email protected]

  By Brian Dayton on April 12, 2010 11:15 AM Sometimes you're searching for something online and you find an unrelated, bonus nugget. Last week I stumbled across an interesting blog post from Chris Heller of a PeopleSoft consulting shop in San Ramon, CA called Grey Sparling. I don't know these guys. But Chris, who apparently used to work on the PeopleTools team, wrote a great article on a pre-acquisition, would-be deal between IBM and PeopleSoft that would have standardized PeopleSoft on IBM technology. The behind-the-scenes perspective is interesting. His commentary on the challenges that the company and PeopleSoft customers would have encountered if the deal had gone through was also interesting: · "No common ownership. It's hard enough to get large groups of people to work together when they work for the same company, but with two separate companies it is much, much harder. Even within Oracle, progress on Fusion applications was slow until Thomas Kurian took over Fusion applications in addition to Fusion middleware." · "No customer buy-in. PeopleSoft customers weren't asking for a conversion to WebSphere, so the fact that doing that could have helped PeopleSoft stay independent wouldn't have meant much to them, especially since the cost of moving to whatever a "PeopleSoft built on WebSphere" would have been significant." · "No executive buy-in. This is related to the previous point, but it's worth calling out separately. If Oracle had walked away and the deal with IBM had gone through, and PeopleSoft customers got put through the wringer as part of WebSphere move, all of the PeopleSoft project teams would be put in the awkward position of explaining to their management why these additional costs and headaches were happening. Essentially they would need to "sell" the partnership internally to their own management team. That's not a fun conversation to have." I'm not surprised that something like this was in the works. But I did find the inside scoop and Heller's perspective on the challenges particularly interesting. Especially the advantages of aligning development of applications and infrastructure development under one roof. Here's a link to the whole blog entry.

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• Windows 2008 R2: can't extend C drive, mystery partitions

  - by wfaulk

  I have a Windows 2008 R2 server running under VMware ESX 4.0.0. I have reallocated disk space to it in order to extend the C drive, but Disk Management has "Extend Volume" greyed out. DISKPART shows more partitions than Disk Management shows, including one after the volume I'm trying to extend, which would explain why Disk Management isn't allowing the extension. Disk Management shows: System Reserved / 100MB NTFS / Healthy (System) (C:) / 39.39 GB NTFS / Healthy (Boot, Page File, Crash Dump) 10.00 GB / Unallocated DISKPART shows: Partition 1 Dynamic Data 992 KB 31 KB Partition 2 Dynamic Data 100 MB 1024 KB Partition 3 Dynamic Data 39 GB 101 MB Partition 4 Dynamic Data 1024 KB 39 GB My question at this point is: what the heck are partitions 1 and 4, where did they come from, why doesn't Disk Management show them, and, most importantly, can I delete partition 4 in order to extend partition 3?

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• Laptop and 2 screens: use screens but not monitor display

  - by ClarkeyBoy

  Hi, I have 1 VGA socket on my laptop, and currently have that in use by a large screen. At some point in the future I would like to get another one of these screens and use both screens in dual screen mode but not use my laptop display (to be honest my laptop display is pretty rubbish as its like 2/3s the size of my screen - even if I had the choice to use all 3 I probably wouldn't want to). Is it possible to achieve this? If so, what do I need by way of hardware / software, and how much do you reckon it should cost me? Thanks in advance. Regards, Richard

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• Timeout Considerations for Solicit Response

  - by Michael Stephenson

  Background One of the clients I work with had been experiencing some issues for a while surrounding web service timeouts.  It's been a little challenging to work through the problems due to limitations in the diagnostic information available from one of the applications, but I learned some interesting things while troubleshooting the problem which don't seem to have been discussed much in the community so I thought I'd share my findings. In the scenario we have BizTalk trying to make calls to a .net web service which was exposed as a WSE 2 endpoint.  In the process BizTalk will try to make a large number of concurrent web service calls to the application, and the backend application has more than enough infrastructure and capability to handle the load. We have configured the <ConnectionManagement> section of the BizTalk configuration file to support up to 100 concurrent connections from each of our 2 BizTalk send servers to the web servers of the application. The problem we were facing was that the BizTalk side was reporting a significant number of timeouts when calling the web service.   One of the biggest issues was the challenge of being able to correlate a message from BizTalk to the IIS log in the .net application and the custom logs in the application especially when there was a fairly large number of servers hosting the web services.  However the key moment came when we were able to identify a specific call which had taken 40 seconds to execute on the server (yes a long time I know but that's a different story!).  Anyway we were able to identify that this had timed out on the BizTalk side.  Based on the normal 2 minute timeout we knew something unexpected was going on. From here I decided to do some experimentation and I wanted to start outside of BizTalk because my hunch was this was not a BizTalk behaviour but something which was being highlighted by BizTalk because of our large load.     Server-side - Sample Web Service To begin with I created a sample web service.  Nothing special just a vanilla asmx web service hosted in IIS6 on Windows 2003 Standard Edition.  The web service is just a hello world style web service as shown in the below picture.  The only key feature is that the server side web method has a 30 second sleep in it and will trace out some information before and after the thread is set to sleep.      In the configuration for this web service there again is nothing special it's pretty much the most plain simple web service you could build. Client-Side To begin looking at what was happening with our example I created a number of different ways to consume the web service. SoapHttpClientProtocol Example I created a small application which would use a normal proxy generated to call the web service.  It would iterate around a loop and make calls using the begin/end methods so I can do this asynchronously.  I would do a loop of 20 calls with the ConnectionManager configuration section supporting only 5 concurrent connections to the server.     <connectionManagement> <remove address="*"/> <add address = "*" maxconnection = "12" /> <add address = "http://<ServerName>" maxconnection = "5" />                         </connectionManagement> </system.net>     The below picture shows an example of the service calling code, key points are: I have configured the timeout of 40 seconds for the proxy I am using the asynchronous methods on the proxy to call the web service         The Test I would run the client and execute 21 calls to the web service.   The Results  Below is the client side trace showing what's happening on the client. In the below diagram is the web service side trace showing what's happening on the server Some observations on the results are: All of the calls were successful from the clients perspective You could see the next call starting on the server as soon as the previous one had completed Calls took significantly longer than 40 seconds from the start of our call to the return. In fact call 20 took 2 minutes and 30 seconds from the perspective of my code to execute even though I had set the timeout to 40 seconds     WSE 2 Sample In the second example I used the exact same code to call the web service again with a single exception that I modified the web service proxy to derive from WebServiceClient protocol which is part of WSE 2 (using SP3).  The below picture shows the basic code and the key points are: I have configured the timeout of 40 seconds for the proxy I am using the asynchronous methods on the proxy to call the web service        The Test This test would execute 21 calls from the client to the web service.   The Results  The below trace is from the client side: The below trace is from the server side:   Some observations on the trace results for this scenario are: With call 4 if you look at the server side trace it did not start executing on the server for a number of seconds after the other 4 initial calls which were accepted by the server. I re-ran the test and this happened a couple of times and not on most others so at this point I'm just putting this down to something unexpected happening on the development machine and we will leave this observation out of scope of this article. You can see that the client side trace statement executed almost immediately in all cases All calls after the initial few calls would timeout On the client side the calls that did timeout; timed out in a longer duration than the 40 seconds we set as the timeout You can see that as calls were completing on the server the next calls were starting to come through The calls that timed out on the client did actually connect to the server and their server side execution completed successfully     Elaboration on the findings Based on the above observations I have drawn the below sequence diagram to illustrate conceptually what is happening.  Everything except the final web service object is on the client side of the call. In the diagram below I've put two notes on the Web Service Proxy to show the two different places where the different base classes seem to start their timeout counters. From the earlier samples we can work out that the timeout counter for the WSE web service proxy starts before the one for the SoapHttpClientProtocol proxy and the WSE one includes the time to get a connection from the pool; whereas the Soap proxy timeout just covers the method execution. One interesting observation is if we rerun the above sample and increase the number of calls from 21 to 100,000 then for the WSE sample we will see a similar pattern where everything after the first few calls will timeout on the client as soon as it makes a connection to the server whereas the soap proxy will happily plug away and process all of the calls without a single timeout. I have actually set the sample running overnight and this did happen. At this point you are probably thinking the same thoughts I was at the time about the differences in behaviour and which is right and why are they different? I'm not sure there is a definitive answer to this in the documentation, or at least not that I could find! I think you just have to consider that they are different and they could have different effects depending on your messaging solution. In lots of situations this is just not an issue as your concurrent requests doesn't get to the situation where you end up throttling the web service calls on the client side, however this is definitely more common with an integration broker such as BizTalk where you often have high throughput requirements.  Some of the considerations you should make Based on this behaviour you should be aware of the following: In a .net application if you are making lots of concurrent web service calls from an application in an asynchronous manner your user may thing they are experiencing poor performance but you think your web service is working well. The problem could be that the client will have a default of 2 connections to remote servers so you should bear this in mind When you are developing a BizTalk solution or a .net solution with the WSE 2 stack you may experience timeouts under load and throttling the number of connections using the max connections element in the configuration file will not help you For an application using WSE2 or SoapHttpClientProtocol an expired timeout will not throw an error until after a connection to the server has been made so you should consider this in your transaction and durability patterns     Our Work Around In the short term for our specific scenario we know that we can handle this by just increasing our timeout value.  There is only a specific small window when we get lots of concurrent traffic that causes this scenario so we should be able to increase the timeout to take into consideration the additional client side wait, and on the odd occasion where we do get a timeout the BizTalk send port retry will handle this. What was causing our original problem was that for that short window we were getting a lot of retries which significantly increased the load on our send servers and highlighted the issue.  Longer Term Solution As a longer term solution this really gives us more ammunition to argue a migration to WCF. The application we are calling has some factors which limit the protocols we can use but with WCF we would have more control on the various timeout options because in WCF you can configure specific parts of the timeout. Summary I've had this blog post on my to do list for ages but hopefully it will be useful to some people to just understand this behaviour and to possibly help you with some performance issues you may have. I do not believe there is too much in the way of documentation particularly around WSE2 and ASMX in this area so again another bit of ammunition for migrating to WCF. I'll try to do a follow up post with the sample for WCF to show how this changes things.

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• How do graphics programmers deal with rendering vertices that don't change the image?

  - by canisrufus

  So, the title is a little awkward. I'll give some background, and then ask my question. Background: I work as a web GIS application developer, but in my spare time I've been playing with map rendering and improving data interchange formats. I work only in 2D space. One interesting issue I've encountered is that when you're rendering a polygon at a small scale (zoomed way out), many of the vertices are redundant. An extreme case would be that you have a polygon with 500,000 vertices that only takes up a single pixel. If you're sending this data to the browser, it would make sense to omit ~499,999 of those vertices. One way we achieve that is by rendering an image on a server and and sending it as a PNG: voila, it's a point. Sometimes, though, we want data sent to the browser where it can be rendered with SVG (or canvas, or webgl) so that it can be interactive. The problem: It turns out that, using modern geographic data sets, it's very easy to overload SVG's rendering abilities. In an effort to cope with those limitations, I'm trying to figure out how to visually losslessly reduce a data set for a given scale and map extent (and, if necessary, for a known map pixel width and height). I got a great reduction in data size just using the Douglas-Peucker algorithm, and I believe I was able to get it to keep the polygons true to within one pixel. Unfortunately, Douglas-Peucker doesn't preserve topology, so it changed how borders between polygons got rendered. I couldn't readily find other algorithms to try out and adapt to the purpose, but I don't have much CS/algorithm background and might not recognize them if I saw them.

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• Do you ever worry that you're more concerned with how something is built rather than what you are actually building?

  - by Rob Stevenson-Leggett

  As a programmer I have an inherent nagging annoyance at my tools, other peoples code, my code, the world in general. I always want to improve it. So I refactor, I stay on top of the latest techniques. I try and learn patterns, I try to use frameworks so as not to reinvent the wheel. I can write a tech spec that will blow your socks off with the amount of patterns I can squeeze in. However, lately I feel I actually know more about the tools I use than how to actually implement successful software. I feel like I'm lacking in the human factors skill set and I believe that to be a successful software engineer takes more than knowing the coolest framework. I think it needs some of the following skillsets too. Interaction design User experience Marketing I've got a bit of this that I've learned from people I've worked with and great projects I've worked on but I don't feel like I "own" these skills. Am I right? Should I be trying to develop these skills further, or should these be left to the people who do these for a career? How do you make sure you don't get too tied up in how you're doing something and make sure you "make your users awesome"? Does anyone know of good resources for learning these skills from a programming point of view?

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• Getting mybrother MFC-J825DW working as a network scanner

  - by AntonChanning

  I've been attempting to set up my new brother multi-function device to work as a printer and scanner using the following steps. It is connected to the network as a LAN device, not directly connected to my ubuntu machine. Downloaded the lpr driver and cupswrapper driver from Brother support. (Select the deb packages, not the rpms). Followed the instructions to install the lpr driver. Followed the instructions to install the cupswrapper driver. After this point I was able to successfully perform a test print, so the printer part is working. So far I haven't had much luck getting the scanner working. This is what I've tried: Downloaded the brscan4 and scan-key-tool deb packages from brother support. Followed the instructions for installing the scanner driver for network. Followed the instructions for installing scan-key-tool. However when I tried to scan it detects no scanner. I then tried the solution offered in this answer to a question based on a similar brother printer, but no luck. I must have made a mistake somewhere along the line. Does anyone have any ideas what I can try to find out what? Or should I uninstall everything and start again from the beginning?

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• Amazon EC2 performance vs desktop

  - by flashnik

  I'm wondering how to compare performance of EC2 instances with standard dedicated servers and desktop. I've found only comparance of defferent clouds. I need to find a solution to perform some computations which require CPU and memory (disc IO is not used). The choice is to use: EC2 (High-CPU) or Xeon 5620/5630 with DDR3 or Core i7-960/980 with DDR3 Can anybody help, how to compare their performance? I'm not speaking about reliability of alternatives, I want to understand pros and cons from the point of just performance.

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• Apache returns truncated image

  - by ChronoFish

  I am bringing up an image directly through firefox (no PHP or other scripting code) and it appears that Apache is returning either a truncated image or a corrupted image. I get the top 5-10% of the image. It appears that I get complete width and height info. If I hit "refresh" (in firefox) I get about 5 more lines of the image. And if I hit refresh again I get another 5 lines. In IE I get the same initial 5-10% of the top of the file. But refresh does not give me any more. Bringing the image up across the network through a mapped-drive reveals the entire image. (so the image(s) itself seems to be okay). (If I point firefox to the image via mapped-drive rather than through Apache firefox brings the image up just fine. So it does seem to be Apache at issue) Any ideas?

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• How Facebook's Ad Bid System Works

  - by pnongrata

  When you are creating an ad on Facebook, you are provided with a "suggested bid" range (e.g., $0.90 - $2.15 USD). According to this page: The suggested bid range is there to help you pick a maximum bid so your ad will be successful. It’s based on how many other advertisers are competing to show their ad to the same audience as you are. I'm interested in understanding what's actually going on (technically) under the hood here. Say a user logs into Facebook. On the server-side, it the HTTP request that the user's browser sent (as part of the login) is handled, and the server needs to figure out which ad to display back to the user. I assume this is where the "bidding" system comes into play? Say that, based on this user's demographics, and based on the audience targeting that several competing advertisers designed their campaign with, let's pretend that Facebook sees a pool of 20 different ads it could return. How does this bidding system help Facebook determine which of the 20 ads it returns to the client-side? I'm guessing that advertisers who "bid more" get prioritized over those who "bid less". But when does this bidding take place? How often does an advertiser need to re-bid? How long is a bid binding for? Once I understand these usage-related concepts behind ads, it will probably be obvious between which of the following "selection strategies" the backend is using: Round robin Prioritized round robin Randomized (doubtful) History-based MVP-based Thanks to anyone who can help point me in the right direction and explain what these suggested bid systems are and how they work.

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• How to View Netflix Watch Instantly in XBMC

  - by Justin Garrison

  Netflix streaming isn’t just a feature that is nice to have, for many people it is a must have for any video streaming software. Unfortunately it has been missing from XBMC for various reasons, until today. In order to get Netflix Watch Instantly working in XBMC you just need to have XBMC 10.0+ installed on Windows or OS X. Because of a lack of Silverlight support, this currently does not work on XBMC Live, Linux, or iOS devices (iPhone, iPad, AppleTV). You also need to live in a region that offers Netflix streaming (currently US and Canada) Latest Features How-To Geek ETC How to Use Google Chrome as Your Default PDF Reader (the Easy Way) How To Remove People and Objects From Photographs In Photoshop Ask How-To Geek: How Can I Monitor My Bandwidth Usage? Internet Explorer 9 RC Now Available: Here’s the Most Interesting New Stuff Here’s a Super Simple Trick to Defeating Fake Anti-Virus Malware How to Change the Default Application for Android Tasks Final Man vs. Machine Round of Jeopardy Unfolds; Watson Dominates The Legend of Zelda – 1980s High School Style [Video] Suspended Sentence is a Free Cross-Platform Point and Click Game Build a Batman-Style Hidden Bust Switch Make Your Clock Creates a Custom Clock for your Android Homescreen Download the Anime Angels Theme for Windows 7

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• How can I join two simple home networks together using an ethernet cable?

  - by Ilia Jerebtsov

  I want to join two different home networks together like so: PC A1 PC A2 PC B1 PC B2 \ / \ / Gateway A <----- ethr. cable -----> Gateway B | | ADSL modem A ADSL modem B Both networks are of the basic residential type with identical configuration, with all PCs running Vista/7. The point is to temporarily join two apartments in a building for gaming and file sharing, and the holy grail would be: PCs on network A can access PCs on network B and vice-versa (file shares and gaming). Each network uses its own internet connection. Data between networks shouldn't take a trip through the internet (broadband upload speeds are severely capped) A network's internet access should continue working if the joining cable is disconnected with minimal configuration changes. How closely can this be achieved?

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• Who moved this PC here aka Locate which port on switch a PC is plugged into

  - by ggonsalv

  The catch is you have no SNMP access, not even public. The end vision is locate a PC in building easily even if PC's are moved around. The MAC address of the PC is known and the software would run as client on each desktop, reporting back which port the PC was plugged into. Well from a programmer perspective, my network skills are not the best. Yes I could use SNMP, download the MAC port table, load it into SQL, match it to the PC name. Seems alot of work. Lets say I ping a single point from the PC. Would the echo have some thing unique for each device on the same switch? All I need to identify some thing unique for each PC plugged into each port. If the PC was moved from location A to a different location then the unique response would change.

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• Weird routing problems with VPN

  - by Borek

  In our VPN setup I have to add a route to my routing table like this: route add 1.2.3.0 mask 255.255.255.0 172.16.1.1 -p Our internal addresses 1.2.3.x then use 172.16.1.1 as their gateway and both my local internet and work VPN can work at the same time. However, when I disconnect from VPN and reconnect again, I can't ping our servers even though the connection status is "Connected". When I do route print my previously added route is listed but it doesn't seem to work. So I try to execute that 'route add' command again and as expected, it tells me that The route addition failed: The object already exists. But - and that's the point - when I now try to ping our servers again, everything works! So every time, I have to execute this route add command that will fail but fix the issue at the same time. Any ideas what I might be doing wrong? My PC is Windows 7 x64, I am Administrator, UAC is enabled and the command prompt is run with elevated privileges.

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• Did Microsoft designers got their butts kicked 3 years ago?

  - by John Conwell

  This is something I've been wondering about for about a year now.  Microsoft has a history of creating very useful products, with lots of useful features.  But useful does not mean usable.  A lot of stuff coming out of Redmond the past 10 years don't really seem to have been well thought out from a user design point of view.  Lots of extra steps, lots of popup windows...very little innovative thinking going on about the user experience of these products.But about a year ago I started seeing changes in the new products coming out of Microsoft.  Windows 7 is a good example of a big change.  They really got their asses handed to them on Vista, so they had to make a change.  But it looks like this change in philosophy has bled over to other areas.  The new Office (2010) lineup has a lot of changes in it to make it way more usable. Given that big changes like this take about 3 years to go from start to actually shipping product, I'm curious what happened internally at Microsoft that really drove this change in product design.  I think that Microsoft got so focused on just adding new functionality for so long, they forgot about the little things that can really make or break a product.  Office 2010 is full of these little things that make it much nicer to use.  I just hope its not too late for them.

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• Using XML as data storage

  - by Kian Mayne

  I was thinking about the XML format and the following quote: “XML is not a database. It was never meant to be a database. It is never going to be a database. Relational databases are proven technology with more than 20 years of implementation experience. They are solid, stable, useful products. They are not going away. XML is a very useful technology for moving data between different databases or between databases and other programs. However, it is not itself a database. Don't use it like one.“ -Effective XML: 50 Specific Ways to Improve Your XML by Elliotte Rusty Harold (page 230, Part 4, Item 41, 2nd paragraph) This seems to really stress that XML should not be used for data storage and should only be used for program to program interoperability. Personally, I disagree and .NET's app.config file that's used to store a program's settings is an example of data storage in an XML file. However for databases rather than configurations etc XML should not be used. To develop my point, I will use two examples: A) Data about customers with fields that are all on one level i.e. there are a number of fields all relating to one customer with no children B) Data about configuration of an application where nested fields and properties make a lot of sense So my question is, Is this still a valid statement and is it now acceptable to store data using XML? EDIT: I've sent an email to the author of that quote to ask for his input/extra context.

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• What do you think of this iterator syntax?

  - by ChaosPandion

  I've been working on an ECMAScript dialect for quite some time now and have reached a point where I am comfortable adding new language features. I would love to hear some thoughts and suggestions on the syntax. Example iterator Numbers { yield 1; yield 2; yield 3; if (true) { yield break; } yield continue iterator { yield 4; yield 5; yield 6; }; } Syntax IteratorDeclaration:     iterator  Identifier  {  IteratorBody  } IteratorExpression:     iterator  Identifieropt  {  IteratorBody  } IteratorBody:     IteratorStatementsopt IteratorStatements:     IteratorStatement IteratorStatementsopt IteratorStatement:     Statement but not one of BreakStatement ContinueStatement ReturnStatement     YieldStatement     YieldBreakStatement     YieldContinueStatement YieldStatement:     yield  Expression  ; YieldBreakStatement:     yield  break  ; YieldContinueStatement:     yield  continue  Expression  ;

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