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  • Converting a bounded knapsack problem to 0/1 knapsack problem

    - by Ants
    I ran across a problem where goal was to use dynamic programming (instead of other approaches). There is a distance to be spanned, and a set of cables of different lengths. What is the minimum number of cables needed to span the distance exactly? To me this looked like a knapsack problem, but since there could be multiples of a particular length, it was a bounded knapsack problem, rather than a 0/1 knapsack problem. (Treat the value of each item to be its weight.) Taking the naive approach (and not caring about the expansion of the search space), the method I used to convert the bounded knapsack problem into a 0/1 knapsack problem, was simply break up the multiples into singles and apply the well-known dynamic programming algorithm. Unfortunately, this leads to sub-optimal results. For example, given cables: 1 x 10ft, 1 x 7ft, 1 x 6ft, 5 x 3ft, 6 x 2ft, 7 x 1ft If the target span is 13ft, the DP algorithm picks 7+6 to span the distance. A greedy algorithm would have picked 10+3, but it's a tie for minimum number of cables. The problem arises, when trying to span 15ft. The DP algorithm ended up picking 6+3+3+3 to get 4 cables, while the greedy algorithm correctly picks 10+3+2 for only 3 cables. Anyway, doing some light scanning of converting bounded to 0/1, it seems like the well-known approach to convert multiple items to { p, 2p, 4p ... }. My question is how does this conversion work if p+2p+4p does not add up to the number of multiple items. For example: I have 5 3ft cables. I can't very well add { 3, 2x3, 4x3 } because 3+2x3+4x3 5x3. Should I add { 3, 4x3 } instead? [I'm currently trying to grok the "Oregon Trail Knapsack Problem" paper, but it currently looks like the approach used there is not dynamic programming.]

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  • Oracle Identity Management 11gR2 Live Event - New York

    - by Tanu Sood
      Are you in New York or the vicinity on September 6? If so, come join Amit Jasuja, Senior Vice President, Security and Identity Management at Oracle as he discusses the evolution of Oracle identity Management solutions and the business drivers (and industry trends) behind those. You have heard about some of the new experiences delivered with the latest release of Oracle Identity Management - simplified user experience, enhanced security and seamless enablement for secure cloud and mobile environments. Now come see it in action and hear what customers, your peers, are saying about their implementations. This forum will also be a great opportunity for you to connect directly with technology experts and network with industry professionals. There is still time left to register so book your space today. Registration details as well as the agenda for the day can be found here. We look forward to hosting you on Thursday, September 6th. Oracle Identity Management 11gR2 Live Event – New York Thursday, September 6, 2012 Oracle NYC Office 101 Park Avenue 4th Floor New York, NY 10178 Register Here Not in NY on Sep 6? Find an event near you in North America.

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  • Liberate Your Laptops! The Return of Virtual Developer Day

    - by Justin Kestelyn
    Many enterprises are reducing travel, conference, and training budgets for their developers without any change in expectation for the results those developers must deliver. How can you keep up? Well, some months back we offered you a Virtual Developer Day on the subject of building Rich Enterprise Applications, the key piece of which was free access to a cloud development environment for hands-on. Now it's back, new and improved! Join us for a FREE, online, multi-language event series for developers (English version is on July 27) at Oracle Technology Network 's Virtual Developer Day. This unique one-day event provides you the opportunity to: 1. Get trained on Oracle Tuxedo from the comfort of your laptop 2. Get hands-on, locally with Oracle VM VirtualBox or via the Cloud 3. Learn what Python, Ruby, and PHP have to do with Oracle Tuxedo 4. Network online with peers, Oracle Tuxedo architects and developers worldwide 5. Sessions, Labs, and Live Help in LOCAL Languages! Review the agenda details, dates, and language support options. Space is limited, so register for this event now! For information and to register go to: www.oracle.com/goto/otnvdd

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  • Comb Over

    - by Tim Dexter
    Being some what follicly challenged, and to my wife's utter relief, the comb over is not something I have ever considered. The title is a tenuous reference to a formatting feature that Adobe offers in their PDF documents. The comb provides the ability to equally space a string of characters on a pre-defined form layout so that it fits neatly in the area. See the numbers above are being spaced correctly. Its not a function of the font but a property of the form field. For the first time, in a long time I had the chance to build a PDF template today to help out a colleague. I spotted the property and thought, hey, lets give it a whirl and see in Publisher supports it? Low and behold, Publisher handles the comb spacing in its PDF outputs. Exciting eh? OK, maybe not that exciting but I was very pleasantly surprise to see it working. I am reliably informed, by Leslie, BIP Evangelist and Tech Writer that, this feature was introduced from version 10.1.3.4.2 onwards. Official docs and no mention of comb overs here. Happy Combing!

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  • Oracle Unveils AutoVue Release 20.1

    - by prasenjit.niyogi(at)oracle.com
    We are extremely pleased to announce the availability of Oracle's AutoVue Release 20.1. AutoVue 20.1 is the latest major release of the family of Enterprise Visualization solutions from Oracle. Highlights of the release include: Unparalleled new format support and enhancements for 3D CAD, 2D, CAD, ECAD and PDF documents New capabilities that support end-to-end design to manufacture processes in the Electronics & High Tech space, that allow manufacturing engineers to perform accurate manufacturability reviews through better support for variants, overlays and polarity Significant printing enhancements, such as printing of markup notes; support for Excel file print settings; and print in grayscale; which serve to optimize paper-based business processes Powerful integration enablement capabilities to extend visualization into existing enterprise architectures and systems; including AutoVue Hotspots that enable visual navigation and action by linking visual data to structured enterprise data, and new AutoVue Document Print Services (DPS) to enrich enterprise applications with format and platform agnostic printing of any document type Improvements for cost-effective AutoVue deployment and administration, including support for virtualization Release 20.1 Webcast - Attend the webcast on April 13th at 12:00 pm EST to discover what is new and exciting in the latest release. Encourage your customers, prospects, and partners to attend. Title: Oracle Unveils AutoVue Release 20.1 Channel: Oracle AutoVue Channel Register Here: http://www.brighttalk.com/webcast/26282 To discover more about the latest release, and to find out what the customers and partners are saying about the value of this offering, check out the: What's New is AutoVue 20.1 Datasheet You can also learn all about the latest format support here AutoVue 20.1 Format Support Sheet We look forward to seeing you at the webcast. If you have any questions feel free to ask, and we will answer it in this forum. Enjoy AutoVue 20.1!

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  • Is there such thing as a "theory of system integration"?

    - by Jeff
    There is a plethora of different programs, servers, and in general technologies in use in organizations today. We, programmers, have lots of different tools at our disposal to help solve various different data, and communication challenges in an organization. Does anyone know if anyone has done an serious thinking about how systems are integrated? Let me give an example: Hypothetically, let's say I own a company that makes specialized suits a'la Iron Man. In the area of production, I have CAD tools, machining tools, payroll, project management, and asset management tools to name a few. I also have nice design space, where designers show off their designs on big displays, some touch, some traditional. Oh, and I also have one of these new fangled LEED Platinum buildings and it has number of different computer controlled systems, like smart window shutters that close when people are in the room, a HVAC system that adjusts depending on the number of people in the building, etc. What I want to know is if anyone has done any scientific work on trying to figure out how to hook all these pieces together, so that say my access control system is hooked to my payroll system, and my phone system allowing my never to swipe a time card, and to have my phone follow me throughout the building. This problem is also more than a technology challenge. Every technology implementation enables certain human behaviours, so the human must also be considered as a part of the system. Has anyone done any work in how effectively weave these components together? FYI: I am not trying to build a system. I want to know if anyone has thoroughly studied the process of doing a large integration project, how they develop their requirements, how they studied the human behaviors, etc.

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  • How does font rendering actually work?

    - by Andrea
    I realize that I know essentially nothing about the way fonts get rendered in my computer. From what I can observe, font rendering is generally made in a consistent way throughout the system. For instance, the subpixel font hinting settings that I configure in my DE control panel have influence on text which appears on window borders, in my browser, in my text editor and so on. (I should observe that some Java applications show a noticeable difference, so I guess they are using a different font rendering mechanism). What I get from the above is that probably all applications that need font rendering make use of some OS (or DE)-wide library. On the other hand, browsers usually manage their own rendering through a rendering engine, that takes care of positioning various items - including text - according to specific flow rules. I am not sure how these two facts are compatible. I would assume that the browser would have to ask the OS to draw a glyph at a given position, but how can it manage the flow of text without knowing beforehand how much space the glyph will take? Are there separate calls to determine the glyph sizes, so that the browser can manage the flow as if characters were little boxes that are later filled in by the OS? (Although this does not take care of kerning). Or is the OS responsible for drawing a whole text area, including text flow? Does the OS return the rendered glyph as a bitmap and leaves it to the application to draw that on the screen?

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  • When mapping the surface of a sphere with tiles, how might you deal with polar distortion?

    - by clweeks
    It's easy to deal with the way locations interact on a clean Cartesian grid. It's just vanilla math. And you can kind of ignore the geometry of the sphere's surface for a bunch of it if you want to just truncate the poles or something. But I keep coming up with ideas for games where the polar space matters. Geo-coded ARGs and global roguelikes and stuff. I want square(ish?) locations -- reasonably representable by square tiles of the same size across the globe, anyway. This has to be a solved problem, right? What are the solutions? ETA: At the equator -- and assuming that your square locations are reasonably small, it's close enough to true that you can get away with having one square in the rows north and south of the most equatorial row. And you could probably get away with that by just hand-waving the difference up to like 45-degrees or so. But eventually, you need to have fewer squares in a pole-ward circumferential row. If I reduce the length of the row by one and offset the squares by 1/2 then they're just like hexes and it's relatively easy to do the coding to keep track of the connections. But as you get pole-ward, it gets more and more extreme. Projecting the surface of the world onto the surface of a cube is tempting. But I figured there must be more elegant solutions already in use. If I did the cube thing (not dissecting it further through geodesy) Are there any pros and cons related to placing the pole at the center of a face or at the vertex of three sides?

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  • How to make and restore incremental snapshots of hard disk

    - by brunopereira81
    I use Virtual Box a lot for distro / applications testing purposes. One of the features I simply love about it is virtual machines snapshots, its saves a state of a virtual machine and is able to restore it to its former glory if something you did went wrong without any problems and without consuming your all hard disk space. On my live systems I know how to create a 1:1 image of the file system but all the solutions I'v known will create a new image of the complete file system. Are there any programs / file systems that are capable of taking a snapshot of a current file system, save it on another location but instead of making a complete new image it creates incremental backups? To easy describe what I want, it should be as dd images of a file system, but instead of only a full backup it would also create incremental. I am not looking for clonezilla, etc. It should run within the system itself with no (or almost none) intervention from the user, but contain all the data of the file systems. I am also not looking for a duplicity backup your all system excluding some folders script + dd to save your mbr. I can do that myself, looking for extra finesse. I'm looking for something I can do before doing massive changes to a system and then if something when wrong or I burned my hard disk after spilling coffee on it I can just boot from a liveCD and restore a working snapshot to a hard disk. It does not need to be daily, it doesn't even need a schedule. Just run once in a while and let it its job and preferably RAW based not file copy based.

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  • The purpose of using invert and transpose

    - by user699215
    In openGl ES and the World of 3D - why use the invers matrix? The thing is that I dont have any intuition to, why it is used, therefore please correct me: As fare as I understand, it is used in shaders - and can help you to figure out the opposite direction of the normals? Invers in ordinary numbers is like; The product of a number and its multiplicative inverse is 1. Observe that 3/5 * 5/3 = 1. In a matrix this will give you the Identity Matrix, which is the base coordinate system or the orion of the World space - right. But the invers is - some other coordinate system? You can use the transpose(Row-major order to Column-major order) of a square matrix to find the inverted matrix, as calculating the invers is process heavy - and the transpose is giving you the inverted matrix as a bi product? Again, I am looking for getting some intuition of this - and therefore be able to use it as intended. Thank you for any reply that will guide me in the right direction. Regards

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  • What is an effective way to convert a shared memory-mapped system to another data access model?

    - by Rob Jones
    I have a code base that is designed around shared memory. Each process that needs to access the memory maps it into its own address space. The data structures in the shared memory are directly accessed, that is, there is no API. For example: Assume the following: typedef struct { int x; int y; struct { int a; int b; } z; } myStruct; myStruct s; Then a process might access this structure as: myStruct *s = mapGlobalMem(); And use it as: int tmpX = s->x; The majority of the information in the global structure is configuration information that is set once and read many times. I would like to store this information in a database and develop an API to access the database. The problem is, these references are sprinkled throughout the code. I need a way to parse the code and identify global structure references that will need to be refactored. I've looked into using ANTLR to create a parser that will identify references to a small set of structures and enter them into a custom symbol table. I could then use this symbol table to identify which source files need to be refactored. It looks like a promising approach. What other approaches are there? Of course, I'm looking for a programmatic approach. There are far too many source files to examine each one visually. This is all ordinary ANSI C. Nothing else.

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  • Adult Swim Brings Their Programming Lineup to iOS Devices

    - by ETC
    If you’re a fan of the programming lineup on Adult Swim–such as Family Guy, Aqua Teen Hunger Force, and The Boondocks–you can now get the entire lineup for free on your iOS device. Adult Swim’s new iOS app streams Adult Swim’s programming lineup including popular shows such as Robot Chicken, Aqua Teen Hunger Force, Family Guy, The Boondocks, Metalocalypse. Hit up the link below to read more and grab a free copy. Adult Swim [iTunes App Store via Download Squad] Latest Features How-To Geek ETC What Can Super Mario Teach Us About Graphics Technology? Windows 7 Service Pack 1 is Released: But Should You Install It? How To Make Hundreds of Complex Photo Edits in Seconds With Photoshop Actions How to Enable User-Specific Wireless Networks in Windows 7 How to Use Google Chrome as Your Default PDF Reader (the Easy Way) How To Remove People and Objects From Photographs In Photoshop Make Efficient Use of Tab Bar Space by Customizing Tab Width in Firefox See the Geeky Work Done Behind the Scenes to Add Sounds to Movies [Video] Use a Crayon to Enhance Engraved Lettering on Electronics Adult Swim Brings Their Programming Lineup to iOS Devices Feel the Chill of the South Atlantic with the Antarctica Theme for Windows 7 Seas0nPass Now Offers Untethered Apple TV Jailbreaking

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  • dual monitors and unity - ati radeon cards

    - by michiel
    I have a vaio laptop with an ATI Radeon video card and an external screen. I used to run dual monitors on Ubuntu 10.10 fine, but recently decided to upgrade to 11.10 via 11.04 I don't think it's the video card or the fglrx driver. It seems to be unity. When I start up, the laptop screen is normal and the external screen is all white, although I can move my mouse over it. However, the cursor becomes the big X that used to be cursor of the first versions of Xwindows. I can right click on it, and it brings up the context menu for the desktop. And then, all of a sudden, it shows my desktop background. I can continue to move my mouse over the external screen, and now the cursor is normal (little white arrow). But I can't do anything any longer (not even the context menu as before), and trying to drag a window to it (which always worked on 10.10) doesn't work. I actually really like unity. It gives me the most our of my desktop, and uses all space available, which is great. But how can I get my second screen back? I tried unity 2D, but the result is the same. Edit: I think I stumbled on this bug: https://bugs.launchpad.net/ubuntu/+source/nvidia-settings/+bug/882143

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  • Webcam doesn't work in Ubuntu 12.10

    - by Kzhi
    I have Gembird cam68ut. On my Ubuntu 12.10 it shows black screen in cheese and guvcview. I tested it in win7, it works fine. Here what I found: It is a uvc compliant camera, I checked on the site: 18ec:3299 USB 2.0 PC Camera (model number QC3231) ArkMicro This webcam is report by lsusb: Bus 001 Device 004: ID 18ec:3299 Arkmicro Technologies Inc. Here is the output of dmesg | tail: uvcvideo: Found UVC 1.00 device USB2.0 PC CAMERA (18ec:3299) uvcvideo: UVC non compliance - GET_DEF(PROBE) not supported. Enabling workaround. input: USB2.0 PC CAMERA as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.5/1-1.5:1.0/input/input17 usbcore: registered new interface driver uvcvideo USB Video Class driver (1.1.1) When I run cheese (or guvcview), here what I get in terminal: libv4l2: error turning on stream: No space left on device (cheese:11797): cheese-WARNING **: Internal data flow error. I tried it on different usb slots with the same results The Webcam's microphone works, I can record audio with it Guys, any thoughts on what can be done to make it work?

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  • which style of member-access is preferable

    - by itwasntpete
    the purpose of oop using classes is to encapsulate members from the outer space. i always read that accessing members should be done by methods. for example: template<typename T> class foo_1 { T state_; public: // following below }; the most common doing that by my professor was to have a get and set method. // variant 1 T const& getState() { return state_; } void setState(T const& v) { state_ = v; } or like this: // variant 2 // in my opinion it is easier to read T const& state() { return state_; } void state(T const& v) { state_ = v; } assume the state_ is a variable, which is checked periodically and there is no need to ensure the value (state) is consistent. Is there any disadvantage of accessing the state by reference? for example: // variant 3 // do it by reference T& state() { return state_; } or even directly, if I declare the variable as public. template<typename T> class foo { public: // variant 4 T state; }; In variant 4 I could even ensure consistence by using c++11 atomic. So my question is, which one should I prefer?, Is there any coding standard which would decline one of these pattern? for some code see here

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  • pros-cons of separate hosting accounts versus using addon domain

    - by hen3ry
    Folks: For historical reasons, I have "Site A" on "Hosting Account A", and "Site B" on "Account B", totally independent accounts with the same vendor, Bluehost. Both are primary domains. Now that Hosting Account B is just about to expire, I'm considering letting it disappear and moving Site B to an Addon domain on "Account A". Both sites are non-commercial, narrow-interest, very-low-traffic, hundreds of page views per month. The file weights for the sites are non-trivial, especially as I like to install specialized CMSs in subdomains. Since Bluehost allows unlimited hosting space there should be no issue with the file load, except I've seen hints of an issue with total file count, maybe 50k files -- which I'm not currently close to hitting, but might eventually. My question: what are the pros and cons of using separate accounts versus hosting Site B as an addon domain? Obviously, using a single account is cheaper by half, and I know that my authoring environment (DreamWeaver CS5) complains when it detects nested source trees, telling me "Synchronization" might fail in such cases, but I don't depend on this feature. What other factors should I consider? TIA

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  • CodePlex Daily Summary for Thursday, October 03, 2013

    CodePlex Daily Summary for Thursday, October 03, 2013Popular ReleasesEvent-Based Components AppBuilder: AB3.Iteration.52: Iteration 52 (Feature): Improve edit of flow step definition by validating input. (empty type name, type name contains space, type name starts with illegal char., custom name contains space, custom name is unique) Renamed: EditSingleStepDefinitionFlow => EditStepDefinitionFlow Improved: EditSubFlowDefinitionFlow (No code was changed. All necessary parts already existed. Only improvement of flow definitions.)DNN® Form and List: DNN Form and List 06.00.07: DotNetNuke Form and List 06.00.06 Changes to 6.0.7•Fixed an error in datatypes.config that caused calculated fields to be missing in 6.0.6 Changes to 6.0.6•Add in Sql to remove 'text on row' setting for UserDefinedTable to make SQL Azure compatible. •Add new azureCompatible element to manifest. •Added a fix for importing templates. Changes to 6.0.2•Fix: MakeThumbnail was broken if the application pool was configured to .Net 4 •Change: Data is now stored in nvarchar(max) instead of ntext C...SpiderSync: SpiderSync 0.5: Initial releaseSimpleExcelReportMaker: Serm 0.03: SourceCode and Sample .Net Framework 3.5 AnyCPU compile.RDFSharp - Start playing with RDF!: RDFSharp-0.6.6: GENERAL (NEW) Introduction of INT64 hashing engine (codenamed "Greta"); QUERY (FIX) Incorrect query evaluation due to faulty detection of optional patterns (v0.6.5 regression); (FIX) Missing update of PatternGroupID information after adding patterns and filters to a pattern group; (FIX) Ensure Context information of a pattern is not null before trying to collect it as variable; (MISC) Changed semantics of Context information of a pattern: if not provided, it will be ignored; (MISC...Ela, functional programming language: Ela, dynamic functional language (PDF, book, 0.6): A book about Ela, dynamic functional language in PDF format.DrivenDb: DrivenDb 1.6.0.1 Release: Removed untyped ReadValue(s) methods specifically for strings. The typed version (ReadValue<T>) works with ReadValue<string> now.Application Architecture Guidelines: App Architecture Guidelines 3.0.8: This document is an overview of software qualities, principles, patterns, practices, tools and libraries.C# Intellisense for Notepad++: Release v1.0.7.1: - smart indentation - document formatting To avoid the DLLs getting locked by OS use MSI file for the installation.CS-Script for Notepad++: Release v1.0.7.1: - smart indentation - document formatting To avoid the DLLs getting locked by OS use MSI file for the installation.State of Decay Save Manager: Version 1.0.2: Added Start/Stop button for timer to manually enable/disable Quick save routine updated to force it to refresh the folder date Quick save added to backup listing Manual update button Lower level hooking for F5 and F9 buttons workingBlackJumboDog: Ver5.9.6: 2013.09.30 Ver5.9.6 (1)SMTP???????、???????????????? (2)WinAPI??????? (3)Web???????CGI???????????????????????Microsoft Ajax Minifier: Microsoft Ajax Minifier 5.2: Mostly internal code tweaks. added -nosize switch to turn off the size- and gzip-calculations done after minification. removed the comments in the build targets script for the old AjaxMin build task (discussion #458831). Fixed an issue with extended Unicode characters encoded inside a string literal with adjacent \uHHHH\uHHHH sequences. Fixed an IndexOutOfRange exception when encountering a CSS identifier that's a single underscore character (_). In previous builds, the net35 and net20...AJAX Control Toolkit: September 2013 Release: AJAX Control Toolkit Release Notes - September 2013 Release (Updated) Version 7.1002September 2013 release of the AJAX Control Toolkit. AJAX Control Toolkit .NET 4.5 – AJAX Control Toolkit for .NET 4.5 and sample site (Recommended). AJAX Control Toolkit .NET 4 – AJAX Control Toolkit for .NET 4 and sample site (Recommended). AJAX Control Toolkit .NET 3.5 – AJAX Control Toolkit for .NET 3.5 and sample site (Recommended). Important UpdateThis release has been updated to fix two issues: Upda...WDTVHubGen - Adds Metadata, thumbnails and subtitles to WDTV Live Hubs: WDTVHubGen.v2.1.4.apifix-alpha: WDTVHubGen.v2.1.4.apifix-alpha is for testers to figure out if we got the NEW api plugged in ok. thanksVisual Log Parser: VisualLogParser: Portable Visual Log Parser for Dotnet 4.0AudioWordsDownloader: AudioWordsDownloader 1.1 build 88: New features list of words (mp3 files) is available upon typing when a download path is defined list of download paths is added paths history settings added Bug fixed case mismatch in word search field fixed path not exist bug fixed when history has been used path, when filled from dialog, not stored refresh autocomplete list after path change word sought is deleted when path is changed at the end sought word list is deleted word list not refreshed download ends. word lis...Wsus Package Publisher: Release v1.3.1309.28: Fix a bug, where WPP crash when running on a computer where Windows was installed in another language than Fr, En or De, and launching the Update Creation Wizard. Fix a bug, where WPP crash if some Multi-Thread job are launch with more than 64 items. Add a button to abort "Install This Update" wizard. Allow WPP to remember which columns are shown last time. Make URL clickable on the Update Information Tab. Add a new feature, when Double-Clicking on an update, the default action exec...Tweetinvi a friendly Twitter C# API: Alpha 0.8.3.0: Version 0.8.3.0 emphasis on the FIlteredStream and ease how to manage Exceptions that can occur due to the network or any other issue you might encounter. Will be available through nuget the 29/09/2013. FilteredStream Features provided by the Twitter Stream API - Ability to track specific keywords - Ability to track specific users - Ability to track specific locations Additional features - Detect the reasons the tweet has been retrieved from the Filtered API. You have access to both the ma...AcDown?????: AcDown????? v4.5: ??●AcDown??????????、??、??、???????。????,????,?????????????????????????。???????????Acfun、????(Bilibili)、??、??、YouTube、??、???、??????、SF????、????????????。 ●??????AcPlay?????,??????、????????????????。 ● AcDown???????C#??,????.NET Framework 2.0??。?????"Acfun?????"。 ??v4.5 ???? AcPlay????????v3.5 ????????,???????????30% ?? ???????GoodManga.net???? ?? ?????????? ?? ??Acfun?????????? ??Bilibili??????????? ?????????flvcd???????? ??SfAcg????????????? ???????????? ???????????????? ????32...New ProjectsBootstrap 3.0 WebPages Helpers: Bootstrap 3.0 WebPages Helpers offre direttamente la forza del pattern responsive e la semplicità di controlli facili d’uso e riuso. Compact Framework 3.9 Templates for Windows Embedded Compact 2013: This project provides Visual Studio 2012 Templates for Compact Framework Version 3.9 in the context of a Windows Embedded Compact 2013 OS project SDK.ganda: naGSpeak (Gesture Speak): Code generation through speech/gesture for everyone (Including individuals with disabilities).Importing Microsoft Project Files: Using mpjx to read microsoft project filesMoppet.Lapa: Very light parser generator based on combinations of lambda functions. Without language of grammar descriptions. Defining parsers in the code directly.NotifyPilot for TFS: NotifyPilot is a simple bridge between TFS and a group of clients (eg : Yammer, SignalR, ect..).SimCa: Simple Image Cacher for WP7.SIMPLE: We are aiming to create an easy to use machine learning framework in C++ which includes the tools you need to make modules for the included learning environmentSpiderSync: Command line application for providing one-way real-time synchronization between two folders.StrontiumTeam: An client-side application based on Kendo UI. It provides the means for car owners to make offers and lure potential buyers through the sleek interface.StudentSystem: A learning system comprising students, teachers, courses and lectures.TelerikExams: Solutions of the tasks for the exams in ThelerikAcademy (http://telerikacademy.com)Thewhy: Just Test CreateUser Stories: proyecto academicoWindows Embedded Compact 2013 Tools: Some applications to add to Compact 2013 OS that were available in previous versions of Windows Embedded Compact/CE but not part of the current version.

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  • Microeconomical simulation: coordination/planning between self-interested trading agents

    - by Milton Manfried
    In a typical perfect-information strategy game like Chess, an agent can calculate its best move by searching the state tree for the best possible move, while assuming that the opponent will also make the best possible move (i.e. Mini-max). I would like to use this approach in a "game" modeling economic activity, where the possible "moves" would be to buy or sell for a given price, and the goal, rather than a specific class of states (e.g. Checkmate), would be to maximize some function F of the agent's state (e.g. F(money, widget) = 10*money + widget). How to handle buy/sell actions that require coordination between both parties, at the very least agreement upon a price? The cheap way out would be to set the price beforehand, maybe based upon the current supply -- but the idea of this simulation is to examine how prices emerge when freely determined by "perfectly rational" agents. A great example of what I do not want is the trading algorithm in SugarScape -- paraphrasing from Growing Artificial Societies p101-102: when a pair of agents interact to trade, they each compute their internal valuations of the goods, then a bargaining process is conducted and a price is agreed to. If this price makes both agents better off, they complete the transaction The protocol itself is beautiful, but what it cannot capture (as far as I can tell) is the ability for an agent to pay more than it might otherwise for a good, because it knows that it can sell it for even more at a later date -- what appears to be called "strategic thinking" in this pape at Google Books Multi-Agent-Based Simulation III: 4th International Workshop, MABS 2003... to get realistic behavior like that, it seems one would either (1) have to build an outrageously-complex internal valuation system which could at best only cover situations that were planned for at compile-time, or otherwise (2) have some mechanism to search the state tree... which would require some way of planning future trades. Note: The chess analogy only works as far as the state-space search goes; the simulation isn't intended to be "zero sum", so a literal mini-max search wouldn't be appropriate -- and ideally, it should work with more than two agents.

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  • Failed Project: When to call it?

    - by Dan Ray
    A few months ago my company found itself with its hands around a white-hot emergency of a project, and my entire team of six pulled basically a five week "crunch week". In the 48 hours before go-live, I worked 41 of them, two back to back all-nighters. Deep in the middle of that, I posted what has been my most successful question to date. During all that time there was never any talk of "failure". It was always "get it done, regardless of the pain." Now that the thing is over and we as an organization have had some time to sit back and take stock of what we learned, one question has occurred to me. I can't say I've ever taken part in a project that I'd say had "failed". Plenty that were late or over budget, some disastrously so, but I've always ended up delivering SOMETHING. Yet I hear about "failed IT projects" all the time. I'm wondering about people's experience with that. What were the parameters that defined "failure"? What was the context? In our case, we are a software shop with external clients. Does a project that's internal to a large corporation have more space to "fail"? When do you make that call? What happens when you do? I'm not at all convinced that doing what we did is a smart business move. It wasn't my call (I'm just a code monkey) but I'm wondering if it might have been better to cut our losses, say we're not delivering, and move on. I don't just say that due to the sting of the long hours--the company royally lost its shirt on the project, plus the intangible costs to the company in terms of employee morale and loyalty were large. Factor that against the PR hit of failing to deliver a high profile project like this one was... and I don't know what the right answer is.

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  • Launching LibreOffice Files - Unusual Window Behaviour

    - by Mike
    Ubuntu 11.10 Unity. If I launch LibreOffice Files (ODS, ODT, ODP) with a double click in their home folders they launch with the appropriate application (Calc, Writer, Impress) however the application windows do not display the usual Close, Minimize, Restore buttons in the left hand corner. There is just a blank space where they should be. In the Unity launcher on the left there is not the expected white arrow next to the launcher icon and the open app is not seen by the ALT+TAB keystroke when you have multiple windows open. For example: if you have an app open in this way and say Firefox, if you minimize Firefox you are only left with the desktop and you have no way to locate the open LibreOffice app. Clicking the app's icon in the launcher simply opens another instance. A messy workaround is to click [Firefox] to a restored window and the LibreOffice app can be seen behind it allowing a mouse click to bring it forward. If I open the LibreOffice app from the launcher and then Open a file from its menu, it all behaves as expected. I don't find this as convenient; anyone know how to fix the bad behaviour?

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  • CodePlex Daily Summary for Thursday, June 12, 2014

    CodePlex Daily Summary for Thursday, June 12, 2014Popular ReleasesLuna ORM - Data Layer Code Generator for Vb.Net and C#: Luna 4.14.6.7: Newer version, better LunaEngine with many new feature. Any class implements IDisposable.StackBuilder: StackBuilder 1.0.21.0: *Issue #9 : Take weight of case into account while searching optimal case... *Issue #10 : Changing direction of last layer to use remaining space while stacking a palette... *Issue #11 : New URL for AutoUpdater section in app.config... First working version of INTEX Corp Plugin...QuickMon: Version 3.15: This release expand on 'Presets' - now called Templates. A complete Template editor has been added so you can manage templates(edit, save, import and export). Existing agent configs can be saved as a template for reuse as well. Additionally a few other fixes were done as well. 1. Fixed Registry collector - allow 'blank' key value (<default> values) 2. Default Monitor pack history size is now 100 3. qmp file extension is now the defaultCommand Line Media Controller: v1.0.0.0: Initial ReleaseVidCoder: 1.5.23 Beta: Added first translations for 1.5. Includes new languages Portuguese, Japanese, Chinese Simplified and Czech. Many of these translations are still incomplete: you can help out on Crowdin. Added an option to pass through an input track if it matches the output codec. Updated HandBrake core to SVN 6209. Fixed crash on AAC passthrough. Fixed x264 settings getting set incorrectly when reverting from a preset with the Advanced tab. Fixed occasional crash when calculating remaining time. ...PowerShell App Deployment Toolkit: PowerShell App Deployment Toolkit v3.1.4: Added New-Folder and Remove-Folder functions (Thanks to SueH) Added NoWait parameter to Execute-Process Added the ability for Deploy-Application.exe to point to a different .ps1 file by specifying it on the command-line Added checks to Deploy-Application.exe to verify the AppDeployToolkit folder exists Added PSAppDeployToolkit icon to Deploy-Application.exe Fixed issue where hang could occur if file version was null when using Get-FileVersion Improved exception handling and loggin...CS-Script Source: Release v3.8.1: Improved ConfigConsole AdvancedShell extensions support cs-script.7z - CS-Script Suite (binaries, documentation, samples) cs-script.ExtensionPack.7z - CS-Script Extension Pack (additional binaries and samples) cs-scriptDocs.7z - CS-Script DocumentationProligence Orchard PowerShell: OrchardPs 0.2: Version 0.2, build 5273 Major Features: Support for Orchard 1.7 and 1.8 Support for managing Orchard themes Added new cmdlets: Get-OrchardFeature, Get-Tenant, Enable-Tenant, Disable-Tenant, Get-OrchardTheme, Enable-OrchardTheme Minor Features: Added 'gopc' alias for Get-OrchardPsCommand cmdlet Hidden 'Configuration' node in Orchard VFS, as it is not yet implemented Bug Fixes: Fixed signatures for *.ps1xml files 'FromAllTenants' switch no longer fails on tenants which are not running ...BugNET Issue Tracker: BugNET 1.6: Version 1.6 is a major upgrade to the latest frameworks and components by Microsoft. It includes a major UI overhaul using the bootstrap framework to have a modern, mobile friendly and easily customized layout. Upgrade to .NET 4.5 ASP.NET social auth Add script bundling and optimization Improvements for mobile devices Bootstrap (UI overhaul) Rewritten / friendly URL's Please read our release notes for BugNET 1.6: http://blog.bugnetproject.com/2014/06/08/bugnet-1-6-and-bugnet-pro-1...CppWindowsAPI: Library Build 20140608 [3.0]: There are many changes since the older versions before v3.0. Portable to the VS2013. Note that there is something still needed to implement so the relative components have been removed from this release, which will be re-implemented into the future releases. md5: 49bf91dbe4e47dee24d1f62a0b482334 sha-1: 4eabffc1b00557cdf8e83df18ac247e230f4c1d0 md5: 4a63a4923c23bcd821e7411453779086 sha-1: 1bb8549b92c8d791346cfe7efcdaeaa37098591d md5: 371026dfcac75e33f331430cf2c65415 sha-1: 7b8a155f30206f...SFDL.NET: SFDL.NET (2.2.9.3): Changelog: Retry Bugfix (Error Counter wurde nicht korrekt zurückgesetzt) Neue Einstellung: Retry Wartezeit ist nun EinstellbarLoad Runner - Distributed HTTP Pressure Test Tool: Load Runner 1.2: 1. added support for distributed load test (read documentation for details) 2. added detail documentationbabelua: 1.5.7.0: V1.5.7.0 - 2014.6.6Stability improvement: use "lua scripts folder" as lua search path when debugging;MyBB: MyBB 1.6.13 Türkçe Kurulum Paketi: MyBB 1.6.13 - Resmi Tam Türkçe UTF-8 Sifir Kurulum Paketi Rar Pass - Sifresi: mybb.com.tr Yayinci site: http://www.mybb.com.tr Orjinal indirme adresi: http://download.mybb.com.tr Destek 1: http://destek.mybb.com.tr/showthread.php?tid=12326 Destek 2: http://tr.mybbdepo.com/mybb-1-6-13-turkce-sifir-kurulum-paketi-konusu.html Dosya: MyBB1613KurulumPaketiTR.rar MD5: d2745b79aa8cc5f8cc09e8a91b50d3cc SHA-1: 6fbb8e611e6d78f8cd3d88d7a773edc67ecc2a3e Ekleyen: XpSerkan MCTR TEAM - Gururla Sunar.SEToolbox: SEToolbox 01.033.007 Release 1: Fixed breaking changes in Space Engineers in latest update. Installation of this version will replace older version.Virto Commerce Enterprise Open Source eCommerce Platform (asp.net mvc): Virto Commerce 1.10: Virto Commerce Community Edition version 1.10. To install the SDK package, please refer to SDK getting started documentation To configure source code package, please refer to Source code getting started documentation This release includes bug fixes and improvements (including Commerce Manager localization and https support). More details about this release can be found on our blog at http://blog.virtocommerce.com.Fantom - Expression Based Dynamic Language Manager: Fantom Binary and Test Web Site: The first version of FantomDLL. Download binary and sample site for testing.Back Up Your SharePoint: SPSBackUP 0.1: Supports SharePoint 2010 and 2013 All settings with xml input file Clean backup history Notifications by mail Log script results in rtf fileNPOI: NPOI 2.1: Assembly Version: 2.1.0 New Features a. XSSFSheet.CopySheet b. Excel2Html for XSSF c. insert picture in word 2007 d. Implement IfError function in formula engine Bug Fixes a. fix conditional formatting issue b. fix ctFont order issue c. fix vertical alignment issue in XSSF d. add IndexedColors to NPOI.SS.UserModel e. fix decimal point issue in non-English culture f. fix SetMargin issue in XSSF g.fix multiple images insert issue in XSSF h.fix rich text style missing issue in XSSF i. fix cell...Media Player (Technology Area): Media Player 0.3 (Codname Kalo): Themes are included, along with a picture viewer. This does not require 0.2 to be installedNew ProjectsAddress Auto lookup For MS CRM 2013: Address Lookup to find correct addresses in less time.Aspose for Spring.Java: Aspose for Spring Java provides source code and detailed usage instructions for extending the existing Spring.Java samples.Beatting Mole XNA Game on Windows Phone: The project game using XNA Game Engine in Windows PhoneBrecham.Obex: The library provides very broad OBEX support, providing not just the ‘Put’ operation , but also: Connect, Put, Get, SetPath, Delete, and Abort.Command Line Media Controller: This application provides a command line interface for issuing basic media controls to most media player applications.DevExpress Prism Adapters: DevExpress Prism Adapters is a project intented to provide different adapters for DevExpress controls integration with Microsoft Prism.FVSB: fvsbH Logger (8 logger): Create logs with a html format with a Visual Studio 2013 style.Masked Input For CRM 2013: Mask Input for more user friendliness and to avoid user typo errors.MovieDatabase: A movie database manipulation program that uses the movie database api.OpenNetworkTester: GUI-based bandwidth testing toolProgress Tracker: A simple pet project that allows users to set up daily tasks and track which ones they complete.ProjectShipping: summarySerXio: tfs, read tfs dataValu Akunting: Sistem Informasi Akuntansi Valudata KomputindoWindows Phone 8.1 Training for MIC15: Using for store training source code and resource url/files/.??????-??????【??】: ????????????????????,??????????,????????、????,??????????,??????????。??????-??????【??】: ??????????????????????????????,??????????,????,????,???,??????。??????-??????【??】: ????????????????,?????????????? ??。????????、????、????、?????????? ???????。????-????【??】: ??????,??????:?????,?????,??????,??????????,????????。????????!????-????【??】: ?????????????????????:????、????、??????????????,????????。????????!??????-??????【??】: ???????????,?????,???????????,???????,????,????,????,?????。??????-??????【??】: ????????????、???、??、??????????????????????????????,????????????????!????-????【??】: ???????????????????????????、????、????、???????????,????,????!?????-?????【??】: ???????????????8?,????????,????????,??????????,?????,????? ,????????!?????-?????【??】: ???????????????6?,???????????????????????????,??????????????,?????????!????-????【??】: ????????????????????????????,???????????????????????,???????。??????-??????【??】: ????????????????、??????、??????、??????、??????、?????、??????、????、????、????????!?????-?????【??】: ???????????????,????????,????:???????,??????,????,????,?????,?????,??????!?????-?????【??】: ????????????????,?????????????。?????????,???????,???????,?????????????。??????-??????【??】: ?????????????????,??????????????、???????、???????、???????、?????!??????-??????【??】: ????????????????????,????????????????,????????????????,??????!????-????【??】: ???????????????,?????????????。????????????,???????,???????,?????,?????。?????-?????【??】: ?????????????????????????,???????????,????????,?????????????????????。?????-?????【??】: ?????????????????????,????“???????,???????”?????,????????????!??????-??????【??】: ??????????????????????????,????,????,??????????。???????????????,??,??,??????????,??????...??????-??????【??】: ???????????????????,?????????????,????,?????????,?????????????,?????,?????!????-????【??】: ??????????????,?????????????? ??。????????、????、????、?????????? ???????。?????-?????【??】: ????????????????,???????????????。???????????,??????:????、????、???????!?????-?????【??】: ?????????????????,???????????,??????????????,??????????,??????????????!??????-??????【??】: ????????????,????,??????????? ???? ???? ?????????,???,??,?????!??????-??????【??】: ????????????????、????、????、??????、????、????????,????????、?????????,?????。????-????【??】: ????????????????:?????? ???? ??????,???????,??????,???????。?????-?????【??】: ????????????????,?????????????。????????????,???????,???????,?????,?????。?????-?????【??】: ?????????????????????????,???????????,????????,???????????????????????????-??????【??】: ???????????????????,?????????????,????,?????????,?????????????,?????,?????!??????-??????【??】: ?????????????????,???????????????。???????????,??????:????、????、???????!????-????【??】: ????????????????????????,????,????,??????????。???????????????,??,??,??????????,??????...?????-?????【??】: ?????????????????,???????????,??????????????,??????????,???????????????????-?????【??】: ?????????????????、?????、?????、????、?????,??????????。????????????????!??????-??????【??】: ????????????????????,????????????????,????????????????,??????!??????-??????【??】: ??????????????????????,????“???????,???????”?????,????????????!????-????【??】: ???????????????,??????????????、???????、???????、???????、?????!?????-?????【??】: ???????????????,????,????,??????,????“????、????、????、????”????????,??????.?????-?????【??】: ???????????????????,????????:??、??、???,?????????????????????!??????-??????【??】: ????????,??????:?????,?????,??????,??????????,????????。????????!??????-??????【??】: ???????????????????????:????、????、??????????????,????????。????????!??????-??????【??】: ?????????????????????????????,??????????,????,????,???,??????????-????【??】: ????????????????、????,??100%????,??????,????????????,???????????!????-????【??】: ??????????????????,??????????,????????、????,??????????,??????????。??????-??????【??】: ??????????????,????????,?????,???,???????????,???????????,?????,??????!??????-??????【??】: ??????????????????????????????????:???????,??????,????,????,????,?????!????-????【??】: ???????????????????,?????????/?,,???????????,??????????????!?????-?????【??】: ???????????????????????,????,????,????,???????,?????,?????.??????。?????-?????【??】: ???????????????、?????,????????????????????,????,????,??????。??????-??????【??】: ????????????????????,???????????????????????????,????:????,????,????,?????。?????-?????【??】: ???????????????????、????????、????????、????????、???????,????????????。?????-?????【??】: ????????????????,???????,??????。??????????,????,????,?????,????????????。???????-???????【??】: ??????????????????,??????,????,?????????????,????????,??????,????,?????...???????-???????【??】: ?????????????? , ???? ?????,??????????????,????,????,??????。?????-?????【??】: ???????????????????,??????????????,???????????,??????,????,??????,??????。??????-??????【??】: ????????????????,??????????????????????:???????,??????,????,????,????,????,????,???????!??????-??????【??】: ??????????????!???????????,??????,????,?????????????,????????,??????,????,?????...??????-??????【??】: ??????????????????、?????、?????、????、?????,??????????。????????????????!??????-??????【??】: ??????????????????????,????????,??????????,?????,????? ,????????!??????-??????【??】: ?????????????????,??????????、??????,??????????、????、????、???????。????-????【??】: ???????????、??????????????????,????????,?????,??????,????,????,????!?????-?????【??】: ?????????????????????,???????????????,???????,?????,?????,????? !!!?????-?????【??】: ?????????????????????,???????????????,????????????????????!???????-???????【??】: ????????????????????,??????????????????,?????????????。?????????,????????????。??????-??????【??】: ??????????????????,????,????,?????????.?????,?????!?????,?????????、??、??!??????-??????【??】: ???????????????????,?????????????,?????????????,??????,????,????,??????????!??????-??????【??】: ?????????????????,??????????、??????,??????????、????、????、???????。??????-??????【??】: ??????????????????????,???????????????,???????,?????,?????,????? !!!????-????【??】: ????????????????????,????????,??????????,?????,????? ,????????!?????-?????【??】: ?????????????????????,???????????????,????????????????????!?????-?????【??】: ?????????????????、????,??100%????,??????,????????????,???????????!??????-??????【??】: ??????????????????????????????,???????????????????????,???????。??????-??????【??】: ??????????????????:?????? ???? ??????,???????,??????,???????。????-????【??】: ????????????????、????、??????、????????,????????????,???????????!?????-?????【??】: ???????????,????,??????????? ???? ???? ?????????,???,??,?????!?????-?????【??】: ???????????????、????、????、??????、????、????????,????????、?????????,?????。??????-??????【??】: ?????????????:??????、????、????、????、????、??????、??????,???????!??????-??????【??】: ??????????????????,????,??.??.??.??.??.??.??.???,????,???????!????-????【??】: ??????????????,???????、???????????,????????、????、????、??????、????????。?????-?????【??】: ????????????????????????????,???????????????,????????、????、????、????、?????????,???????、???、???,??????????????????????,????????????、???????、??????????;???????????????-?????【??】: ???????????【.????.????.????.????.】??【??】:、??、??、??、??、??、??、??、??、??、??、???????????-??????【??】: ??????????????????、?????、?????、?????、?????、????,???????????,?????,??????!??????-??????【??】: ??????????????????,???、???!???????,????????????????,????????????,???!????-????【??】: ?????????????????????,????????????,?????、??、????,?????,???????????-?????【??】: ????????????????、????、????、??????????,???,?????,???????????????.?????-?????【??】: ????????????????????,?????????、??、??、????,??????????,?????????????!

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  • Java Embedded @ JavaOne

    - by Tori Wieldt
    Developers, tell your manager (or the other half of your developer-entrepreneur self) about this new event being held Wednesday, Oct. 3th and Thursday, Oct. 4th in San Francisco at the Hotel Nikko (during JavaOne).Java Embedded @ JavaOne is designed to provide business and technical decision makers, as well as Java embedded ecosystem partners, a unique occasion to come together and learn about how they can use Java Embedded technologies for new business opportunities. The ideal audience for this event is business and technical decision makers (e.g. System Integrators, CTO, CXO, Chief Architects/Architects, Business Development Managers, Project Managers, Purchasing managers, Technical Leads, Senior Decision Makers, Practice Leads, R&D Heads, and Development Managers/Leads).A call for papers has gone out, but is ONLY for business-focused submissions. Event organizers are looking for best practices, case studies and panel discussions on emerging opportunities in the Java embedded space. Please consider submitting a paper. The deadline for submission is July 18.Attendees of both JavaOne and Oracle Openworld can attend Java Embedded @ JavaOne by purchasing a $100.00 USD upgrade to their full conference pass. Rates for attending Embedded @ JavaOne alone are here.

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  • links for 2010-06-15

    - by Bob Rhubart
    You're invited : Oracle Solaris Day, June 28th, Herzliya - Openomics How open innovation and technology adoption translates to business value, with stories from our developer support work at Sun ISV Engineering (tags: ping.fm) Edwin Biemond: Enriching and Forwarding your data with the Spring Component in SOA Suite 11g PS2 Oracle ACE Edwin Biemond describes "how easy it is to use Java in the Spring Component, how you can wire this Component to other Components, Services or References adapters." (tags: oracleace soa oracle middleware) Venkatakrishnan J: Oracle BI EE 10.1.3.4.1 - Currency Conversions & FX Translations &ndash; Part 1 "As part of the BI EE setup we need to ensure that such local currency transactions are converted to a common reporting currency," says Rittman Mead's Venkatakrishnan. (tags: oracle businessintelligence) Richard Veryard: Ecosystem SOA 2 "What are the problems of large complex sociotechnical systems?" asks Rich Veryard?  "How far do SOA and enterprise architecture help to address this problem space, and what else might we need?" (tags: soa entarch) Khanderao Kand: Oracle BPM Suite .. unified engine.. "This Suite is based on unified process foundation of Oracle Business Process Management Suite 11g . It has the same engine that executes both BPEL and BPMN processes, " says Kand.  (tags: bpel soa bpm oracle) Webcast: Revealing the Secrets that will Re-Energize your Services Strategies  Oracle's Peter Heller and Robert Covington discuss how to overcome the many unforeseen technical and organizational barriers in order to meet the high expectations of dynamic business requirements in this live webcast, July 14, 2010, 9:00 AM PDT / Noon EDT (tags: entarch oracle webcast)

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  • What reasons are there to reduce the max-age of a logo to just 8 days? [closed]

    - by callum
    Most websites set max-age=31536000 (1 year) on the Cache-control headers of static assets such as logo images. Examples: YouTube Yahoo Twitter BBC But there is a notable exception: Google's logo has max-age=691200 (8 days). I've checked the headers on the Google logo in the past, and it definitely used to be 1 year. (Also, it used to be part of a sprite, and now it is a standalone logo image, but that's probably another question...) What could be valid technical reasons why they would want to reduce its cache lifetime to just 8 days? Google's homepage is one of the most carefully optimised pages in the world, so I imagine there's a good reason. Edit: Please make sure you understand these points before answering: Nobody uses short max-age lifetimes to allow modifying a static asset in future. When you modify it, you just serve it at a different URL. So no, it's nothing to do with Google doodles. Think about it: even if Google didn't understand this basic trick of HTTP, 8 days still wouldn't be appropriate, as only those users who don't have the original logo cached would see the doodle on doodle-day – and then that group of users would go on seeing the doodle for the following 8 days after Google changed it back :) Web servers do not worry about "filling up" the caches of clients (or proxies). The client manages this by itself – when it hits its own storage limit, it just starts dropping the lowest priority items to make space for new items. The priority score is based on the question "How likely am I to benefit from having cached this URL?", which is nothing to do with what max-age value the server sent when the URL was originally requested; it's a heuristic based on the "frecency" of requests for that URL. The max-age simply lets the server set a cut-off point – the time at which the client is supposed to discard the item regardless of how often it's being re-used. It would be very nice and trusting of a downstream client/proxy to rely on all origin servers "holding back" from filling up their caches, but I don't think we live in that world ;)

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  • Very large log files, what should I do?

    - by Masroor
    (This question deals with a similar issue, but it talks about a rotated log file.) Today I got a system message regarding very low /var space. As usual I executed the commands in the line of sudo apt-get clean which improved the scenario only slightly. Then I deleted the rotated log files which again provided very little improvement. Upon examination I find that some log files in the /var/log has grown up to be very huge ones. To be specific, ls -lSh /var/log gives, total 28G -rw-r----- 1 syslog adm 14G Aug 23 21:56 kern.log -rw-r----- 1 syslog adm 14G Aug 23 21:56 syslog -rw-rw-r-- 1 root utmp 390K Aug 23 21:47 wtmp -rw-r--r-- 1 root root 287K Aug 23 21:42 dpkg.log -rw-rw-r-- 1 root utmp 287K Aug 23 20:43 lastlog As we can see, the first two are the offending ones. I am mildly surprised why such large files have not been rotated. So, what should I do? Simply delete these files and then reboot? Or go for some more prudent steps? I am using Ubuntu 14.04.

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