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• Uralelektrostroy Improves Turnaround Times for Engineering and Construction Projects by Approximately 50% with Better Project Data Management

  - by Melissa Centurio Lopes

  LLC Uralelektrostroy was established in 1998, to meet the growing demand for reliable energy supply, which included the deployment and operation of a modern power grid system for Russia’s booming economy and industrial sector. To rise to the challenge, the country required a company with a strong reputation and the ability to strategically operate energy production and distribution facilities. As a renowned energy expert, Uralelektrostroy successfully embarked on the mission—focusing on the design, construction, and operation of power grids, transmission lines, and generation facilities. Today, Uralelektrostroy leads the Russian utilities industry with operations across the country, particularly in the Ural, Western Siberia, and Moscow regions. Challenges: Track work progress through all engineering project development stages with ease—from planning and start-up operations, to onsite construction and quality assurance—to enhance visibility into complex projects, such as power grid and power-transmission-line construction Implement and execute engineering projects faster—for example, designing and building power generation and distribution facilities—by better monitoring numerous local subcontractors Improve alignment of project schedules with project owners’ requirements—awarding federal and regional authorities—to avoid incurring fines for missing deadlines Solutions: Used Oracle’s Primavera P6 Enterprise Project Portfolio Management 8.1 to streamline communication with customers and subcontractors through better data management and harmonized reporting, reducing construction project implementation and turnaround times by approximately 50%, on average Enabled fast generation of work-in-progress reports that track project schedules, budgets, materials, and staffing—from approval and material procurement, to construction and delivery Reduced the number of construction sites by nearly 30% (from 35 to 25) by identifying unprofitable sites—streamlining operations at the company’s construction site network and increasing profitability Improved project visibility by enabling managers to efficiently track project status, ensuring on-time reporting and punctual project deliveries to federal customers to reduce delay penalties to zero “Oracle’s Primavera P6 Enterprise Project Portfolio Management 8.1 drastically changed the way we run our business. We’ve reduced the number of redundant assets, streamlined project implementation and execution, and improved collaboration with our customers and contractors. Overall, the Oracle deployment helped to increase our profitability.” – Roman Aleksandrovich Naumenko, Head of Information Technology, LLC Uralelektrostroy Read the complete customer snapshot here.

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• Project compilation requires a class that is not used anywhere

  - by Susei

  When I build with ant my project that uses libgdx, I get a strange error. It says that a class com.google.gwt.dom.client.ImageElement is not found, but it isn't used at all in the code. How can I find what makes this class necessary? Even searching over the whole project doesn't give any results. It says that error is at PixmapTextureAtlas.java:16 (class source), but there is no code that uses that ImageElement class. Adding the library containing com.google.gwt.dom.client.ImageElement class helps, of course, but I'd like to figure out why this class in needed. Here is the place in ant log that tells of the actual error: Compiling 3 source files to /home/suseika/Projects/tendiwa/client/bin /home/suseika/Projects/tendiwa/client/src/org/tendiwa/client/PixmapTextureAtlas.java:16: error: cannot access ImageElement class file for com.google.gwt.dom.client.ImageElement not found Here is the whole ant log: /usr/lib/jvm/java-7-oracle/bin/java -Xmx128m -Xss2m -Dant.home=/opt/intellijidea/lib/ant -Dant.library.dir=/opt/intellijidea/lib/ant/lib -Dfile.encoding=UTF-8 -classpath /opt/intellijidea/lib/ant/lib/ant-apache-regexp.jar:/opt/intellijidea/lib/ant/lib/ant-swing.jar:/opt/intellijidea/lib/ant/lib/ant-apache-xalan2.jar:/opt/intellijidea/lib/ant/lib/ant-jdepend.jar:/opt/intellijidea/lib/ant/lib/ant-apache-resolver.jar:/opt/intellijidea/lib/ant/lib/ant-jsch.jar:/opt/intellijidea/lib/ant/lib/ant.jar:/opt/intellijidea/lib/ant/lib/ant-testutil.jar:/opt/intellijidea/lib/ant/lib/ant-launcher.jar:/opt/intellijidea/lib/ant/lib/ant-apache-bsf.jar:/opt/intellijidea/lib/ant/lib/ant-commons-logging.jar:/opt/intellijidea/lib/ant/lib/ant-netrexx.jar:/opt/intellijidea/lib/ant/lib/ant-junit.jar:/opt/intellijidea/lib/ant/lib/ant-commons-net.jar:/opt/intellijidea/lib/ant/lib/ant-apache-bcel.jar:/opt/intellijidea/lib/ant/lib/ant-antlr.jar:/opt/intellijidea/lib/ant/lib/ant-apache-log4j.jar:/opt/intellijidea/lib/ant/lib/ant-jai.jar:/opt/intellijidea/lib/ant/lib/ant-apache-oro.jar:/opt/intellijidea/lib/ant/lib/ant-jmf.jar:/opt/intellijidea/lib/ant/lib/ant-javamail.jar:/usr/lib/jvm/java-7-oracle/lib/tools.jar:/opt/intellijidea/lib/idea_rt.jar com.intellij.rt.ant.execution.AntMain2 -logger com.intellij.rt.ant.execution.IdeaAntLogger2 -inputhandler com.intellij.rt.ant.execution.IdeaInputHandler -buildfile /home/suseika/Projects/tendiwa/client/build.xml jar build.xml property path description compile ant property property property description compile mkdir javac jar ant property description _core_src_available available ontology antcall property description _core_src_available available _build_core ant property property compile echo /home/suseika/Projects/tendiwa/client mkdir javac jar jar Building jar: /home/suseika/Projects/tendiwa/MainModule.jar description tempfile mkdir Created dir: /tmp/tendiwa373148820 unjar Expanding: /home/suseika/Projects/tendiwa/MainModule.jar into /tmp/tendiwa373148820 Expanding: /home/suseika/Projects/tendiwa/tendiwa-backend.jar into /tmp/tendiwa373148820 Expanding: /home/suseika/Projects/tendiwa/tendiwa-ontology.jar into /tmp/tendiwa373148820 copy Copying 1 file to /tmp/tendiwa373148820 java Created item short_sword Created item short_bow Created item bucket Created item boot Created item steel_morningstar Created item rifle_ammo Created item handAxe Created item iron_armor Created item steel_mace Created item jacket Created item fedora Created item wooden_arrow Saving sources to /tmp/tendiwa373148820/ontology/src tendiwa/resources/SoundTypes.java tendiwa/resources/CharacterTypes.java tendiwa/resources/ObjectTypes.java tendiwa/resources/FloorTypes.java tendiwa/resources/ItemTypes.java tendiwa/resources/MaterialTypes.java mkdir mkdir mkdir Created dir: /tmp/tendiwa373148820/ontology/bin javac jar Building jar: /home/suseika/Projects/tendiwa/tendiwa-ontology.jar echo Resources source code generated ant property property compile echo /home/suseika/Projects/tendiwa/client mkdir javac jar jar jar Building jar: /home/suseika/Projects/tendiwa/MainModule.jar mkdir javac /home/suseika/Projects/tendiwa/client/build.xml:25: Compile failed; see the compiler error output for details. at org.apache.tools.ant.taskdefs.Javac.compile(Javac.java:1150) at org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:912) at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291) at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106) at org.apache.tools.ant.Task.perform(Task.java:348) at org.apache.tools.ant.Target.execute(Target.java:390) at org.apache.tools.ant.Target.performTasks(Target.java:411) at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399) at org.apache.tools.ant.Project.executeTarget(Project.java:1368) at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41) at org.apache.tools.ant.Project.executeTargets(Project.java:1251) at org.apache.tools.ant.Main.runBuild(Main.java:809) at org.apache.tools.ant.Main.startAnt(Main.java:217) at org.apache.tools.ant.Main.start(Main.java:180) at org.apache.tools.ant.Main.main(Main.java:268) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at com.intellij.rt.ant.execution.AntMain2.main(AntMain2.java:30) /home/suseika/Projects/tendiwa/client/build.xml (25:46)'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds Compiling 3 source files to /home/suseika/Projects/tendiwa/client/bin /home/suseika/Projects/tendiwa/client/src/org/tendiwa/client/PixmapTextureAtlas.java:16: error: cannot access ImageElement class file for com.google.gwt.dom.client.ImageElement not found 1 error /home/suseika/Projects/tendiwa/client/build.xml:25: Compile failed; see the compiler error output for details. at org.apache.tools.ant.taskdefs.Javac.compile(Javac.java:1150) at org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:912) at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291) at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106) at org.apache.tools.ant.Task.perform(Task.java:348) at org.apache.tools.ant.Target.execute(Target.java:390) at org.apache.tools.ant.Target.performTasks(Target.java:411) at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399) at org.apache.tools.ant.Project.executeTarget(Project.java:1368) at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41) at org.apache.tools.ant.Project.executeTargets(Project.java:1251) at org.apache.tools.ant.Main.runBuild(Main.java:809) at org.apache.tools.ant.Main.startAnt(Main.java:217) at org.apache.tools.ant.Main.start(Main.java:180) at org.apache.tools.ant.Main.main(Main.java:268) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at com.intellij.rt.ant.execution.AntMain2.main(AntMain2.java:30) /home/suseika/Projects/tendiwa/client/build.xml:25: Compile failed; see the compiler error output for details. at org.apache.tools.ant.taskdefs.Javac.compile(Javac.java:1150) at org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:912) at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291) at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106) at org.apache.tools.ant.Task.perform(Task.java:348) at org.apache.tools.ant.Target.execute(Target.java:390) at org.apache.tools.ant.Target.performTasks(Target.java:411) at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399) at org.apache.tools.ant.Project.executeTarget(Project.java:1368) at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41) at org.apache.tools.ant.Project.executeTargets(Project.java:1251) at org.apache.tools.ant.Main.runBuild(Main.java:809) at org.apache.tools.ant.Main.startAnt(Main.java:217) at org.apache.tools.ant.Main.start(Main.java:180) at org.apache.tools.ant.Main.main(Main.java:268) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at com.intellij.rt.ant.execution.AntMain2.main(AntMain2.java:30) Ant build completed with 3 errors one warning in 4s at 10/30/13 3:09 AM Here is a part of ant file where this error appears: <path id="tendiwa.jars"> <fileset dir="../libs"> <include name="**/*.jar"/> </fileset> <pathelement path="../tendiwa-backend.jar"/> <pathelement path="../tendiwa-ontology.jar"/> <!--<fileset dir="/usr/share/java" includes="gwt*.jar"/>--> </path> <target name="compile"> <ant dir="../MainModule" target="jar"/> <mkdir dir="bin"/> <javac destdir="bin" failonerror="true"> <classpath> <path refid="tendiwa.jars"/> <!--temporary--> <pathelement path="../tendiwa-ontology.jar"/> <!--temporary--> <pathelement path="../MainModule.jar"/> <fileset dir="../libs" includes="**/*.jar"/> </classpath> <src> <pathelement path="Desktop/src"/> <pathelement path="src"/> </src> </javac> </target>

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• WCF SSL secure transfer or large payloads without changing firewall.

  - by Sir Mix

  I need to transfer small amounts of data intermittently from clients to our server in a secure fashion and pull down large binary files from the server ocassionally. It's important for all this to be reliable. I'm anticipating 100,000 clients. I control both ends, but I want to deliver a solution that doesn't require changing the firewall for the majority of customers. A lag of one or two minutes before the information migrates to the server or comes down seems to be acceptable at this time. We need to make the connection secure, so was thinking about SSL, but open to suggestions. Basically, what is the best binding to use in this situation so that we have a secure transmission and the system handles the stress and load in a way that works for 95% of clients out of the box (firewalls will not block in majority of firewall configurations).

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• Project setup for an ADO.NET/WCF DataService

  - by Slauma

  I'd like to implement a ADO.NET/WCF DataService and I am wondering what's the best way to setup a project in VS2008 SP1 for this purpose. Currently I have an ASP.NET web application project (not of "WebSite" project type). The data access layer is an Entity model (EF version 1) with SQL Server database. I have the Entity Model in a separate DLL project and the web application project references to this assembly for all data accesses. The ADO.NET/WCF DataService needs to communicate with the Entity model/database as well. It has to be hosted on the same web server (IIS 7.5) together with the web application. Since the DataService is not directly related to that specific web application (though it will provide and modify data from/in the same database the web application uses as well) my basic idea was to separate the DataService in its own new project (which also references the Entity Model DLL). Now I have seen that there is no project type "ADO.NET/WCF DataService" in VS2008 SP1. It seems only possible to add a DataService as an element to other existing projects, for instance Web Application projects. Why isn't there a separate DataService project type? Does this mean now that I have to add the DataService as an element to my Web Application project? Or shall I create a new Web Application project and add a DataService to it? (I could delete the pregenerated default.aspx since I do not need any web pages in this project.) What's the best way? Thank you for suggestions in advance!

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• Starting a Blog using Microsoft.Net technologies

  - by manav inder

  I want to start a blog using Microsoft technologies. My primary reason is to get more in-sync with technologies which are very much in demand. It does not matter how steep is the learning curve as long I am willing to devote all the time in the world. There are lot going on like Microsoft WebAPI, Dot net nuke MVC SPA etc. Let me tell you what i know I have very good experience in developing database driven .net application using winforms and wpf. Average experience in asp.net and asp.net mvc. Good in entity framework, ado.net and wcf rest services. Good in IoC/DI.

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• Automatically add links to class source files under a specified directory of another project in Visu

  - by Binary255

  I want to share some class source files between two projects in Visual Studio 2008. I can't create a project for the common parts and reference it (see my comment if you are curious to why). I've managed to share some source files, but it could be a lot more neat. I've created a test solution called Commonality. The Solution Explorer of the Commonality solution which contains project One and Two: What I like: All class files under the Common folder of project One are automatically added to project Two by linking. It's mostly the same as if I would have chosen Add / Existing Item... : Add As Link on each new class source file. It's clear that these files have been linked in. The shortcut arrow symbol is marking each file icon. What I do not like: The file and folder tree structure under Common of project One isn't included. It's all flat. The linked source files are shown under the project root of project Two. It would look much less cluttered if they were located under Common like in project One. The file tree structure of the Commonality solution which contains project One and Two: $ tree /F /A Folder PATH listing for volume Cystem Volume serial number is 0713370 1337:F6A4 C:. | Commonality.sln | +---One | | One.cs | | One.csproj | | | +---bin | | \---Debug | | One.vshost.exe | | One.vshost.exe.manifest | | | +---Common | | | Common.cs | | | CommonTwo.cs | | | | | \---SubCommon | | CommonThree.cs | | | +---obj | | \---Debug | | +---Refactor | | \---TempPE | \---Properties | AssemblyInfo.cs | \---Two | Two.cs | Two.csproj | Two.csproj.user | Two.csproj~ | +---bin | \---Debug +---obj | \---Debug | +---Refactor | \---TempPE \---Properties AssemblyInfo.cs And the relevant part of project Two's project file Two.csproj: <ItemGroup> <Compile Include="..\One\Common\**\*.cs"> </Compile> <Compile Include="Two.cs" /> <Compile Include="Properties\AssemblyInfo.cs" /> </ItemGroup> How do I address what I do not like, while keeping what I like?

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• What is a good software development plan?

  - by Totophil

  Whilst browsing through answers on SO I came across something that is, in my view, one of the more frequent software development management misconceptions: "[software development] plan is a reasonably detailed description of all the activities you need to undertake". Hence the question: what is good software development plan? Can it be boiled down just to a work breakdown structure; is WBS the single most important thing for a software development plan anyway?

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• How do I know an array of structures was allocated in the Large Object Heap (LOH) in .NET?

  - by AMissico

  After some experimenation using CLR Profiler, I found that: Node[,] n = new Node[100,23]; //'84,028 bytes, is not placed in LOH Node[,] n = new Node[100,24]; //'86,428 bytes, is public struct Node { public int Value; public Point Point; public Color Color; public bool Handled; public Object Tag; } During run-time, how do I know an array of structures (or any array) was allocated in the Large Object Heap (LOH)?

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• Website settings for running visual web as root?

  - by Curtis White

  Scott Gu explains how to run visual web developer using a root path, here: http://weblogs.asp.net/scottgu/archive/2006/12/19/tip-trick-how-to-run-a-root-site-with-the-local-web-server-using-vs-2005-sp1.aspx This worked exactly as he described in one instance for me. But, today I do not see this option. More over, I do not think I have a solution file, and I think that has something to do with it. I'm aware there are web application projects and web site model, and web site model is basically just a "directory". But can web site model, also, have a solution file for this setting or not a solution file? What determines that? I am interested in using this method on on a web site, i.e directory only model.

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• Eclipse - Import existing mult-rep CVS project folder

  - by iQ

  Hey guys, Wondering if anyone can help me out with eclipse in terms of importing an existing CVS managed project. I am currently trying to shift my work on to the eclipse IDE. Some details about my project and environment below. I'm working in Linux Ubuntu, the project folder is located on a mounted shared network drive, I have installed the "Eclipse CVS Client" plug-in for my version of eclipse (helios). I've tried many ways for eclipse to use my existing folder as a project and recognize the CVS data in the CVS folders. I have done the following options: Created a new project, selected existing source, located my project folder and clicked OK to finish creating. In the end the CVS files weren't automatically read. Did the same as above and after project creation I wen to the option "project menu-team-share project", it asks me to choose a repository and doesn't automatically find the CVS information in the subfolders. If your wondering I have set-up both repositories in my eclipse and can browse the repositories through the CVS browser. My project directory layout is like this: +-Project Folder (no CVS folder at this level) +---Repo A folder +-----CVS meta-info folder is INSIDE, along with all checked out files from Repo A + +---Repo B folder +-----CVS meta-info folder is INSIDE, along with all checked out files from Repo B + +-(couple of random files, not in CVS) Thanks for the help

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• MySQL ALTER TABLE on very large table - is it safe to run it?

  - by Timothy Mifsud

  I have a MySQL database with one particular MyISAM table of above 4 million rows. I update this table about once a week with about 2000 new rows. After updating, I then perform the following statement: ALTER TABLE x ORDER BY PK DESC i.e. I order the table in question by the primary key field in descending order. This has not given me any problems on my development machine (Windows with 3GB memory), but, even though 3 times I have tried it successfully on the production Linux server (with 512MB RAM - and achieving the resulted sorted table in about 6 minutes each time), the last time I tried it I had to stop the query after about 30 minutes and rebuild the database from a backup. I have started to wonder whether a 512MB server can cope with that statement (on such a large table) as I have read that a temporary table is created to perform the ALTER TABLE command?! And, if it can be safely run, what should be the expected time for the alteration of the table? Thanks in advance, Tim

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• How the hell do you get clients to use your bug tracking system?

  - by louism

  on larger projects i use a simple bug tracking system thats designed to be used by clients i have a lot of trouble convincing clients to use it (they send bug reports via email) does anyone have any strategies they can suggested? also, i have been playing around with a theory as to why this is the case; it goes like this: asking a client to log a bug is like taking your car to a mechanic for a service, and the mechanic hands you the engine oil and says "here, pop that in". basically, the client has paid you to do the work, logging a bug sounds too much like work, so they want you to do it thoughts? -- LM

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• Feature categories for a social network

  - by mafutrct

  Not sure if this question belongs on SO. Anyway, please let me try to clarify the issue. I'm currently planning a social program. It's basically a chat server with the major additional ability to play games. I'd like to create categories of features that are offered to users. My question is, are there any useful standard feature categories? Does not have to be specific to my case, I'm interested in the general case as well. Just to give you an idea of what I'm thinking: functional e.g. play games social e.g. chatting operational e.g. 24/7 service availability I'm entirely unsure if this is the right place to ask, if you know of any better site to ask please don't hesitate to add a comment.

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• How do you get clients to use your bug tracking system?

  - by louism

  on larger projects i use a simple bug tracking system that's designed to be used by clients i have a lot of trouble convincing clients to use it (they send bug reports via email) does anyone have any strategies they can suggested? also, i have been playing around with a theory as to why this is the case; it goes like this: asking a client to log a bug is like taking your car to a mechanic for a service, and the mechanic hands you the engine oil and says "here, pop that in". basically, the client has paid you to do the work, logging a bug sounds too much like work, so they want you to do it thoughts?

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• How to send mail with large size attachment using System.Net.Mail to Google Apps ?

  - by Preeti

  Hi, I am trying to send mail with large size attachment upto (1MB,2MB). But sending mail fails.(Sending to Google Apps) as: MailItemEntry[] entries = new MailItemEntry[1]; String EmlPath = "C:\\testemail.eml"; String msg = File.ReadAllText(EmlPath); entries[0] = new MailItemEntry(); entries[0].Rfc822Msg = new Rfc822MsgElement(msg); How can i divide attachments into multi part? Exception I am getting while migrating this EML to Google apps is: {"The request was aborted: The request was canceled."}

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• Formula for PERT - Pessimistic time and optimistic time

  - by karthi

  I found PERT examples include a formula (a + 4m + b)/6 where a= optimistic time , b= pessimistic time and m= actual time to complete the task but how to calculate a and b? please help me as soon as possible

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• How can i insert large files in mysql db using php?

  - by anjan

  Hi! I want to upload a large file of size 10M max to my mysql database. Using .htaccess i changed the PHP's own file upload limit to "10485760" = 10M, i am able to upload files upto 10M size without any problem. But i can not insert the file in database if it is more that 1M in size. i am using file_get_contents to read all file data and pass it to the insert query as a string to be inserted into a LONGBLOB field. But files with more than 1M size is not being added to database, though i can use print_r($_FILES) to examine that the file uploaded correctly. Any help will be appreciated and i will need it within next 6 hours. So, please help! best regards, Anjan

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• How do you figure out your peak productivity hours?

  - by byte

  In working on side projects, I typically write code best around 7pm-8pm, with a good cup of coffee, and I find that I tend to be more productive than I do at work during this time. What is the best way to find your peak productive hours?

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• k-means clustering in R on very large, sparse matrix?

  - by movingabout

  Hello, I am trying to do some k-means clustering on a very large matrix. The matrix is approximately 500000 rows x 4000 cols yet very sparse (only a couple of "1" values per row). The whole thing does not fit into memory, so I converted it into a sparse ARFF file. But R obviously can't read the sparse ARFF file format. I also have the data as a plain CSV file. Is there any package available in R for loading such sparse matrices efficiently? I'd then use the regular k-means algorithm from the cluster package to proceed. Many thanks

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• Is there any way to maximize PHP_INT_MAX?

  - by Tom

  I can't find this row in php.ini, so is there any way to do that? So ok, I understood, the answer is not, then how should I calculate the result of this task if I want it do with php? The prime factors of 13195 are 5, 7, 13 and 29. What is the largest prime factor of the number 600851475143 ?

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• Visually [Diagrams/movies] Display events and states of System using old logs of Application to trac

  - by singh

  Hi In My Application many process runs. Having multiple threads in each process. Whenever any bug comes, I have to analyze thousands of lines of logs to know exact root-cause. I am thinking of an idea, Please guide me if it is feasible and good enough Each log have Process name , Thread id , and Time stamp along with message. If I can create a intelligence to capture what is happing with time and display in a movie which user can view it like a normal video. Forward – backward etc. It will help to reach root cause fast and bug tracing will become easy. Please guide me on library in c++ using which I can draw diagrams and display as movie

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• Resource grouping? people with the same skill?

  - by crick3r

  Let's say I have 4 people. Sometimes anyone can do a task, but sometimes they are specific. I would like to group people by skill. Is there any way I can do that? Right now, I have something like this: Resources: SkillA=3, GuyA=1, GuyB=1, GuyC=1 Task A <= SkillA Anyone can do it Task B <= SkillA, GuyB Only B can do it, but I also allocate the skill just to be sure I don't allocate more than 3 people at the same time. My problem with this approach is that sometimes GuyA is on holidays, but I can't reduce SkillA from 3 to 2 in that period.. Any tips?

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• Multi-petabyte scale out storage solution [closed]

  - by Alex Yuriev

  Let's say that I have a need to have a single-name space scale to multi-petabyte object store with a file system-like wrapper. What is currently out there that supports the following: Single name space that can take 1B files. Support for multiple entry points using NFS At least node level replication ( preferably node and file level replication ) Online software upgrades No "magic sauce" on the storage layer The following has been evaluated: Gluster & Lustre - just ick - fundamental lack of understanding of why online upgrades are mandatory. OneFS - we have it. It is smelling more and more like it hides a dead body under the hood. Other than MapR and zfs am I missing anything? P.S. Oh yes, I keep forgetting that the forums are for people to discuss if 2TB drive actually stores 2TB info. May bad. Seriously though - how the heck can "meets the following requirements" can be considered a "debate"? P.P.S. I did not throw an idiotic insult - i pointed out that this is actually an interesting question compared to a conversation about storage capacity of a 2TB hard drive. It is not a question of what works better - it is a question that asks did I miss any of the products that currently exist which fit the criteria where criteria is clearly outline. I got one answer below which included something that I have not looked at in a long time which looks quite a bit grown up compared to the time I briefly look at it before.

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• Enabling OUD Entry Cache for large static groups

  - by Sylvain Duloutre

  Oracle Unified Directory can take advantage of several caches to improve performances. especially the so-called database cache and the file system cache. In addition to that, it is possible to use an entry cache to cache LDAP entries. By default, the entry cache is not used. In specific deployements involving large static groups, it may worth loading the group entries to the entry cache to speed up group membership and group-based aci evaluation. To do so, run the following commands: First, specify which entries should reside in the entry cache. In the commad below, only entries matching the LDAP filter " (|(objctclass=groupOfNames)(objectclass=groupOfUniqueNames)) " will be stored in the entry cache. dsconfig set-entry-cache-prop \          --cache-name FIFO \          --add include-filter:\(\|\(objctclass=groupOfNames\)\(objectclass=groupOfUniqueNames\)\)          --port <ADMIN_PORT> \          --bindDN cn=Directory\ Manager \          --bindPassword ****** \          --no-prompt Then enable the entry cache: dsconfig set-entry-cache-prop \          --cache-name FIFO \          --set enabled:true \          --port <ADMIN_PORT> \          --bindDN cn=Directory\ Manager \          --bindPassword ****** \          --no-prompt In addition to that, you can control how much memory the entry cache can use: oud@s96sec1d0-v3:/application/oud : dsconfig -X -n -p <ADMIN PORT> -D "cn=Directory Manager" -w <password> get-entry-cache-prop --cache-name FIFO Property           : Value(s) -------------------:----------------------------------------------------------- cache-level        : 1 enabled            : true exclude-filter     : - include-filter     : (|(objctclass=groupOfNames)(objectclass=groupOfUniqueNames)) max-entries        : 2147483647 max-memory-percent : 90 You can change the max-entries amd max-memory-percent properties to control the entry cache size using the dsconfig set-entry-cache-prop command.

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• HTML Presence Controls for Communications Server 14 CodePlex Project

  Showing Presence on the Web If youre running Office Communicator Server 2007 R2, you know that your only out-of-the-box option for showing presence on the web is to use the NameControl ActiveX control that ships as part of Office.  Being an ActiveX control, this obviously means that youre limited to Internet Explorer.  Also, nobody likes ActiveX controls What if you want to show the presence of users in a pure ASP.NET or HTML application and cant assume that the user has Communicator installed you need anASP.NET or HTML presence control.  HTML Presence Controls for Microsoft Communications Server 14 We recently worked with the UC team at Microsoft on a keynote demo for TechEd 2010 in New Orleans.  The demo was for a fictitious airline Fabrikam Airlines that wanted to show the presence of customer service and reservations agents on its website.  Customers could also start an instant message conversation with the agents using a Silverlight web chat window that used WCF to communicate with the backend UCMA application. We built HTML Presence Controls that use AJAX to poll a REST-based WCF service running in IIS and hosting a UCMA 3.0 presence subscription application.   Microsoft has graciously allowed us to publish these on CodePlex so that the development community can benefit from them:  http://htmlpresencecontrols.codeplex.com/ We will be maintaining the CodePlex project as new builds of UCMA 3.0 become available.  Check out the project home page on CodePlex for some more in-depth details on how the controls are implemented. ASP.NET Server Control Implementation Were providing an ASP.NET Server Control implementation that you can use stand-alone or in a GridView or Repeater (or other layout control).  The control has properties that allow you to control its appearance, e.g. you can choose whether or not to show the contacts name or availability text. You can also use the server control in a layout control such as a GridView by putting it in a TemplateColumn and binding to the Sip Uri in the data source. Disclaimer Once we started working on these, we realized why Microsoft hasnt shipped such controls as part of the product.  There are some tradeoffs you have to be aware of when using these controls, heres the high level. Privacy The backend UCMA 3.0 application that subscribes to presence of contacts runs as a trusted application and can thus retrieve the presence of any user in the organization.  Theres currently no good way in UCMA to apply any privacy rules to ensure that the consumer of the presence controls has permission to see the presence of the contacts that the controls are bound to.  Just to be absolutely crystal clear These controls provide a way to query the presence of any user in the organization, regardless of the privacy relationship between the person consuming the controls and the contacts whose presence is being displayed. Were exploring options for a design pattern that would allow you to inject some privacy controls.  Keep in mind though that you would most likely be responsible for implementing this logic, as there is currently no functionality in UCMA that allows you to do that. Polling the WCF REST Service The controls poll the backend WCF service to retrieve the presence of contacts - you can control the refresh interval so that they poll less often. We implemented a caching layer so that the WCF service is always communicating with a presence cache it never communicates directly with Communications Server.  For example, if your web page is showing the presence of sip:[email protected] and 500 people have the page open, the presence cache only contains one instance of the subscription Communications Server is not being polled 500 times for the presence of that contact. Once the presence of a contact changes, it is updated in the cache.  There are some server-based push mechanisms that would work nicely here, such as the one that Outlook Web Access 2010 uses.  Unfortunately we didnt have time to explore these options. Community Contribution Take a look at the project Issue Tracker, there are a couple of things we can use some help with.  Shoot me a note if youre interested in contributing to the project. Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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