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  • Is there a grey-area with Copyright infringement?

    - by Z.O
    Currently a student, I'm trying to put together a game for iOS. From everywhere I've read, it seems any game's sound and art are apart of their IP and covered under their Copyright. That being said, say I wanted to use the coin sound effect from the original Mario (less than 1s long and used sparsely)... would anyone really care? Having no experience with this, I'm just wondering if cases like this are treated like "Ya you're driving slightly over the speed limit, but nobody cares" or as "you stole that car". Thanks for any insight anyone may be able to provide.

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  • EPM and Business Analytics Talking-head Videos from Oracle OpenWorld 2013

    - by Mike.Hallett(at)Oracle-BI&EPM
    Normal 0 false false false EN-GB X-NONE X-NONE Here is a selection of 2 to 3 minute video interviews at this year’s Oracle OpenWorld: 1. George Somogyi, Solutions Architect, New Edge Group, talks about the importance of having their integrated Oracle Hyperion Platform consisting of Oracle Hyperion Financial Management, Oracle Hyperion Financial Data Quality Management, Oracle E-Business Suite R12 and Oracle Business Intelligence Extended Edition plus their use of Oracle Managed Cloud Services. Speaker: George Somogyi @ http://youtu.be/kWn0dQxCUy8 2. Gregg Thompson, Director of Financial Systems for ADT, talks about using Oracle Data Relationship Management prior to implementing an Enterprise Performance Management solution. Gregg confirmed that there are big benefits to bringing the full Oracle Hyperion Financial Close suite online with Oracle DRM as the metadata source. Reduced maintenance time and use of external consultants translates into significant time and cost savings and faster implementation times. Speaker: Gregg Thompson @ http://youtu.be/XnFrR9Uk4xk 3. Jeff Spangler, Director Financial Planning and Analysis for Speedy Cash Holdings Corp, talked to us about the benefits achieved through implementing Oracle Hyperion Planning and financial reporting solutions. He also describes how the use of Data Relationship Management will keep the process running smoothly now and in the future. Speaker: Jeff Spangler @ http://youtu.be/kkkuMkgJ22U 4. Marc Seewald, Senior Director of Product Management for Oracle Hyperion Tax Provision at Oracle, talks about Oracle Hyperion Tax Provision, how it is an integral part of the financial close process and that it provides better internal controls and automation of this task. Marc talks about Oracle Partners and customers alike who are seeing great value. Speaker: Marc Seewald @ http://youtu.be/lM_nfvACGuA 5. Matt Bradley, SVP of Product Development for Enterprise Performance Management (EPM) Applications at Oracle, talked to us about different deployment options for Oracle EPM. Cloud services (SaaS), managed services, on-premise, off-premise all have their merits, and organizations need flexibility to easily move between them as their companies evolve. Speaker: Matt Bradley @ http://youtu.be/ATO7Z9dbE-o 6. Neil Sellers, Partner, Qubix International talks about their experience with previewing Oracle’s new Planning and Budgeting Cloud Service. He describes the benefits of the step-by-step task lists, the speed of getting the application up and running, and the huge benefits of not having to manage the software and hardware side of the planning process. Speaker: Neil Sellers @ http://youtu.be/xmosO28e4_I 7. Praveen Pasupuleti, Senior Business Intelligence Development Manager of Citrix Systems Inc., talks about their Oracle Hyperion Planning upgrade and the huge performance improvement now experienced in forecasting. He also talked about the benefits of Oracle Hyperion Workforce Planning achieved by Citrix. Speaker: Praveen Pasupuleti @ http://youtu.be/d1e_4hLqw8c 8. CheckPoint Consulting, talked to us about how Enterprise Performance Management should be viewed as an entire solution, rather than as a bunch of applications in silos, to provide significant benefits; and how Data Relationship Management can tie it all together effectively. Speaker: Ron Dimon @ http://youtu.be/sRwbdbbXvUE 9. Sonal Kulkarni, Enterprise Performance Management Leader, Cummins Inc., talks about their use of Oracle Hyperion Financial Close Management (Account Reconciliation Manager), Oracle Hyperion Financial Management and Oracle Hyperion Financial Data Quality Management and how this is providing efficiency, visibility and compliance benefits. Speaker: Sonal Kulkarni @ http://youtu.be/OEgup5dKyVc 10. Todd Renard, Manager Financial Planning and Business Analytics for B/E Aerospace Inc., talks about the huge benefits that B/E Aerospace is experiencing from Oracle Financial Close Suite. He was extremely excited about Oracle Hyperion Financial Data Quality Management and how this helps them integrate a new business in as little as three weeks. Speaker: Todd Renard @ http://youtu.be/nIfqK46uVI8 11. Peter Smolianski, Chief Technology Officer for the District of Columbia Courts, talked to us about how D.C. Courts is using Oracle Scorecard and Strategy Management to push their 5 year plan forward, to report results to their constituents, and take accountability for process changes to become more efficient. Speaker: Peter Smolianski @ http://www.youtube.com/watch?v=T-DtB5pl-uk 12. Rich Wilkie, Senior Director of Product Management for Financial Close Suite at Oracle, talked to us about Oracle Financial Management Analytics. He told us how the prebuilt dashboards on top of Oracle Hyperion Financial Close Suite make it easy for everyone to see the numbers and understand where they are in the close process, and if there is an issue, they can see where it is. Executives are excited to get this information on mobile devices too. Speaker: Rich Wilkie @ http://www.youtube.com/watch?v=4UHuHgx74Yg 13. Dinesh Balebail, Senior Director of Software Development for Oracle Hyperion Profitability and Cost Management, talked to us about the power and speed of Oracle Hyperion Profitability and Cost Management and how it is being used to do deep costing for Telecoms, Hospitals, Banks and other high transaction volume organizations effectively. Speaker: Dinesh Balebail @ http://youtu.be/ivx5AZCXAfs /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Calibri","sans-serif"; mso-bidi-font-family:"Times New Roman"; mso-ansi-language:EN-US; mso-fareast-language:EN-US;}

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  • What do I need to get a job with a major game company?

    - by MahanGM
    I've been recently working with DirectX and getting familiar with game engines, sub-systems and have done game development for the last 5 years. I have a real question for those whom have worked in larger game making companies before. How is it possible to get to into these big game creators such as Ubisoft, Infinity Ward or EA. I'm not a beginner in my field and I'm going to produce a real nice 2D platform with my team this year, which is the result of 5 years 2D game creation experience. I'm working with prepared engines such as Unity3D or Game Maker software and using .Net with C# to write many tools for our production and proceeding in my way but never had a real engine programming experience 'till now. I'm now reading good books around this topic but I wanted to know: Is it possible to become an employee in big game company by just reading books? I mean beside having an active mind and new ideas and being a solution solver.

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  • backlink anchor text / keyword stratergy post penguin

    - by sam
    Ive heard allot recently about over optimisation regarding backlink anchor text ofsite. What ive heard from seomoz was sites most effected by the penguin update had over 60% of their backlinks anchor text the same, so google saw this is unnatural and penalized them. Which kind of makes sense as its not normal to have such high density on one word / phrase. If i where building links for a gastro pub in london. (this is purely hypothetical). The sort of keywords i would go after are "gastro pub in london" and "london gastro pub" If i where to mix up the anchor text by having: gastro pub gastro pub in london london gastro pub would this be seen as ok ? or would these all be seen as broad match keywords and counted as one phrase, making me fall foul of the penguin update ?

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  • Steady zoom on center in LWJGL (Modelview)

    - by l5p4ngl312
    I am having a problem in LWJGL with zooming in and out. I am using glScaled(zoom, zoom, 1) before glTranslated. There are 2 problems: 1. The rate of zoom speeds up a lot when zooming out (lower zoom value). 2. It zooms in on the bottom left corner of the screen rather than the center. Eventually, I would like to have the zoom focused on the mouse position. I have tried to fix these problems by make it glScaled(zoom^12, zoom^12, 1) so that the greater the zoom value, the faster it will zoom in order to balance out the faster zoom at lower zoom values. To compensate for the zoom focused on the bottom left, I have tried to subtract (zoom+1)^10 + 2^10 from the X and Y of each sprite. This results in a curved zoom path, first to the left and then to the right. It is a 2D game.

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  • Use a proxy which connects to the school proxy

    - by denNorske
    How to get my computer use a proxy ON my computer, which connects to the school proxy ? The reason I ask this, is because I need all programs on my computer, absolutely the whole system to go through the network, without having to use proxy authentication? Then I was thinking of a possibility to use a local proxy without authentication, to connect to the school proxy (with all authentication details), and then be able to make the system go through it? Is that possible? I've heard some stories about using IP-tables to make a transparent proxy, but I have no idea how to do that, as i am pretty new at all this. So, details, explanations and suggestions about this are very welcome! If you need more details, I'll provide them!

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  • Typical text encoding+BOM, and EOL behavior on mobile devices

    - by Dan W
    Typical things to worry about when dealing with text are the BOM/signature, encoding, and the end of line (EOL) char/chars. I know that Windows often favours \r\n (CR+LF) and Mac/Linux favours \n (LF), but how about mobile devices such as the iPhone and Android? Do typical apps on those platforms favour one or the other? Also, which text encodings are mobiles most likely to use - UTF-8, iso-8859-1, or even Windows 1252 (or other default codepage) or maybe even UTF-16? And if they use UTF-8/16, are they likely to need (or require not having) a BOM/signature? What is the typical behavior here?

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  • Trouble switching to Dvorak on Ubuntu 12.04

    - by Dodgie
    I've decided to switch to Dvorak on my Ubuntu machine, but I'm having some trouble: First, I attempted to do this through the GUI -- System Settings - Keyboard Layout - add layout (plus sign) - English(programmer Dvorak). This didn't work at first, so I restarted my machine. It seemed to work at the password prompt (if only because QWERTY did not), but I couldn't get it to accept my password. I used the virtual keyboard option to enter my password with mouse clicks (the virtual keyboard was using the programmer's Dvorak Standard) and was able to get in that way. Once logged in, however, I was back to QWERTY. Second, I tried to switch on the command prompt -- $ loadkeys /usr/lib/kbd/keytables/dvorak.map The error message I received was "Couldn't get a file descriptor referring to the console " Does anyone know what I'm doing wrong? I've looked for a solution for these problems, but couldn't find anything.

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  • Firefox ignore GTK theme for localhost stuff

    - by Mario De Schaepmeester
    I know this is pretty much a duplicate of How can one make firefox ignore my GTK theme entirely?, but the answers on that one are no permanent solution. It works by launching firefox from the terminal. I would like to know a solution that works for every instance of firefox no matter how it was created. There is the possibility to edit the userContent.css file, but the settings you make randomly do not apply to some sites or in some situations, strangely, even with the !important added... I have a dark GTK theme and this results in some textboxes having a black background with black text with a userContent.css that has input, textarea { color: black !important; background-color: white !important; } Update I changed a setting in about:config from true to false, namely browser.display.use_system_colors. Everything appears normal and well now, for one exception: everything that runs on localhost. This includes PHPMyAdmin and a website I am making. I would like to know if there is a solution to this.

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  • Uninstall backtrack 5 dual booted with Ubuntu

    - by omerjerk
    Some days ago I installed BackTrack over my Ubuntu installation. I was having some problems in the bootloader of BackTrack. So I set default bootloader to that of Ubuntu. I didn't remember the command that I typed. so now the default bootloader is of Ubuntu and I want to completely remove BackTrack. how to do that ? If I just delete the installation files of backtrack from ubuntu then it'll still be there in the bootloader.

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  • Deterministic replay in a modern game

    - by cloudraven
    I am doing a study in modern games graphics, and as part of the study it would be really helpful to be able to replay a sequence in the game multiple times. For example, recording a series of inputs to get the exact video sequences, but being able to replay them in different computers or different graphics configurations. I want to do this study with a couple of existing commercial games with sophisticated graphics (something released in the last 1 or 2 years if possible). I was thinking on hooking with detours or something similar, calls to time() or srand() to fix all pseudo-number generated results. It would be ideal to have a general solution that works with any game. Since admittedly that is pretty ambitious, I would be happy just having 2 or 3 games in which it is known that I can get deterministic output for a given input. In the end, I will be comparing video output, so I want to avoid noise generated by differences on each execution caused by non-determinism. Any sugestions?

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  • Adventures in Scrum: Lesson 1 &ndash; The failed Sprint

    - by Martin Hinshelwood
    I recently had a conversation with a product owner that wanted to have the Scrum team broken up into smaller units so that less time was wasted on the Scrum Ceremonies! Their complaint was around the need in Scrum to have the entire “Team” (7+-2) involved in the sizing of the work during the “Sprint Planning Meeting”.  The standard flippant answer of all Scrum professionals, “Well that's not Scrum”, does not get you any brownie points in these situations. The response could be “Well we are not doing Scrum then” which in turn leads to “We are doing Scrum…But, we have split the scrum team into units of 2/3 so that they can concentrate on a specific area of work”. While this may work, it is not Scrum and should not be called so… It is just a form of Agile. Don’t get me wrong at this stage, there is nothing wrong with Agile, just don’t call it Scrum. The reason that the Product Owner wants to do this is that, in effect, through a number of miscommunications and failings in our implementation of Scrum, there was NO unit of potentially Shippable software at the end of the first sprint. It does not matter to them that most Scrum teams will fail the first Sprint, even those that are high performing teams. Remember it is the product owners their money! We should NOT break up scrum teams into smaller units for the purpose of having less people tied up in the Scrum Ceremonies. The amount of backlog the Team selects is solely up to the Team… Only the Team can assess what it can accomplish over the upcoming Sprint. - Scrum Guide, Scrum.org The entire team must accept the work and in order to understand what they can accept they must be free to size it as a team. This both encourages common understanding and increases visibility on why team members think a task is of a particular size. This has the benefit of increasing the knowledge of the entire team in the problem domain. A new Team often first realizes that it will either sink or swim as a Team, not individually, in this meeting. The Team realizes that it must rely on itself. As it realizes this, it starts to self-organize to take on the characteristics and behaviour of a real Team. - Scrum Guide, Scrum.org This paragraph goes to the why of having the whole team at the meeting; The goal of Scrum it to produce a unit of potentially shippable software at the end of every Sprint. In order to achieve this we need high performing teams and this is what Scrum as a framework has been optimised to produce. I think that our Product Owner is understandably upset over loosing two weeks work and is losing sight the end goal of Scrum in the failures of the moment. As the man spending the money, I completely understand his perspective and I think that we should not have started Scrum on an internal project, but selected a customer  that is open to the ideas and complications of Scrum. So, what should we have NOT done on our first Scrum project: Should not have had 3 interns as the only on site resource – This lead to bad practices as the experienced guys were not there helping and correcting as they usually would. Should not have had the only experienced guys offsite – With both the experienced technical guys in completely different time zones it was difficult to get time for questions. Helping the guys on site was just plain impossible. Should not have used a part time ScrumMaster – Although the ScrumMaster attended all of the Ceremonies, because they are only in 2 full days of the week it makes it difficult for the team to raise impediments as they go. Should not have used a proxy product owner. – This was probably the worst decision that was made. Mainly because the proxy product owner did not have the same vision as the product owner. While Scrum does not explicitly reject the idea of a Proxy Product Owner, I do not think it works very well in practice. The “single wringable neck” needs to contain both the Money and the Vision as well as attending the required meetings. I will be brining all of these things up at the Sprint Retrospective and we will learn from our mistakes and move on. Do, Inspect then Adapt…   Technorati Tags: Scrum,Sprint Planing,Sprint Retrospective,Scrum.org,Scrum Guide,Scrum Ceremonies,Scrummaster,Product Owner Need Help? Professional Scrum Developer Training SSW has six Professional Scrum Developer Trainers who specialise in training your developers in implementing Scrum with Microsoft's Visual Studio ALM tools.

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  • Remote install of Ubuntu Server

    - by David Walker
    Hi all, I have a machine located 500 miles away that's running Ubuntu 8.04. I figure it's just about time that I upgrade to the latest LTS. However, there's a software raid (md_raid) in there, and I'm afraid that just a dist-upgrade when I switch over the sources.list will end with catastrophic failure. Like a panic on boot that the raid'd disk can't be read, or something else. First, hoping that's not the case, however, if it ends up happening I'm wondering if there's a means of having someone drop in a Ubuntu 10.04 server install disk, and flip on ssh, and some means for me to hop on and re-run the installer remotely. Is this feasible? If so, what would one need to do aside run apt-get install ssh on the target machine? I do have friends who can be in front of the target machine to initiate the process, just not execute it out.

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  • Atheros AR8132 Ethernet refuses to connect after suspend

    - by Ramesh Patel
    I'm having an issue where my ethernet card (Atheros Communications Inc. AR8132 Fast Ethernet (rev c0)) refuses to recognize when a network cable is plugged in after a suspend. This is dmesg after suspending: [135897.712049] atl1c 0000:02:00.0: MAC state machine can't be idle since disabled for 10ms second [135897.743729] ADDRCONF(NETDEV_UP): eth0: link is not ready [135898.541804] ADDRCONF(NETDEV_UP): eth1: link is not ready [135900.452077] atl1c 0000:02:00.0: irq 47 for MSI/MSI-X [135900.672262] atl1c 0000:02:00.0: Error get phy ID [135900.673060] ADDRCONF(NETDEV_UP): eth0: link is not ready [135900.674140] ADDRCONF(NETDEV_UP): eth0: link is not ready [135925.604052] [135935.776051] eth1: no IPv6 routers present eth0 is the ethernet card and eth1 is the wlan card (Broadcom Corporation BCM43224 802.11a/b/g/n (rev 01)). The ethernet card uses the atl1c driver and the wlan card uses the wl driver. Sorry, should have mentioned as well, running Ubuntu 12.04 with kernel 3.2.0-25-generic.

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  • "'/usr/share/app-install/desktop/software-center.menu': Not a directory" error when trying to reinstall the software center

    - by EnTer
    I was having some problem with Software center. So tried to reinstall it. But While removing it give me an error. (Reading database ... 150986 files and directories currently installed.) Removing software-center ... dpkg: error processing software-center (--remove): unable to securely remove '/usr/share/app-install/desktop/software-center.menu': Not a directory Processing triggers for man-db ... Processing triggers for hicolor-icon-theme ... Processing triggers for desktop-file-utils ... Processing triggers for gnome-menus ... Processing triggers for bamfdaemon ... Rebuilding /usr/share/applications/bamf.index... Errors were encountered while processing: software-center E: Sub-process /usr/bin/dpkg returned an error code (1) Now The same problem is repeating if I use apt-get to install or upgrade my ubuntu. I cant install any software and Software-Center too.. PLZ help

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  • Storage and BackUp Strategies

    - by Chandra Vennapoosa
    Many of us are familiar with backing up our data.  While it sounds pretty simple, the fact is that most of the computer users do not backup their data. Some of the excuses which they often make involve how long it takes, how slow it is, or how many DVDs or disks they need. However, once disaster strikes, the loss that you will suffer by not having your data backed up can be very severe. Topics Introduction What is an Online Back Up? Online Back Up Strategies Implementing Disaster Avoidance Implementation and Storage Security Issues to Consider Reader complete article : Storage and BackUp Strategies

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  • Arrays for a heightmap tile-based map

    - by JPiolho
    I'm making a game that uses a map which have tiles, corners and borders. Here's a graphical representation: I've managed to store tiles and corners in memory but I'm having troubles to get borders structured. For the tiles, I have a [Map Width * Map Height] sized array. For corners I have [(Map Width + 1) * (Map Height + 1)] sized array. I've already made up the math needed to access corners from a tile, but I can't figure out how to store and access the borders from a single array. Tiles store the type (and other game logic variables) and via the array index I can get the X, Y. Via this tile position it is possible to get the array index of the corners (which store the Z index). The borders will store a game object and accessing corners from only border info would be also required. If someone even has a better way to store these for better memory and performance I would gladly accept that. EDIT: Using in C# and Javascript.

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  • How to restore the icon of firefox (or any other program)

    - by Santosh
    Ubuntu 11.10 came with Firefox 7.x.x so I downloaded the Firefox 12 from its site. I did following to install this Extracted the archive. Put that extracted folder into /usr/lib/, the location was something like /usr/lib/firefox-12.0/. At this point of time I was having 2 firefox versions, so I deleted the older one (/usr/lib/firefox-7.x.x) Next I made a link of the firefox executable (/usr/lib/firefox-12.0/firefox) and place that into /usr/bin replacing the older one. During this process I didn't touched/removed from launcher bar. There was no problem in to launch firefox from the old icon from the launcher, I checked the version in about and it was 12. But as soon as I restarted the system I got the following results. Now how can I restore the icons?

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  • Using GParted to rescue data and format hard drive to NTFS

    - by Ishan
    I'm having problems booting to Windows XP due to bad sectors on the hard drive. I've tried fixboot and fixmbr from the recovery console. That only made matters worse. Now I want to use GParted to attempt data rescue and format the hard drive to NTFS. Unfortunately, I get an error (Picture 2) when trying to recover my files, and the option to format the hard drive is grayed out. The only thing I can do is create a new partition. When I click "view" I get the "Unable to open the default file manager" error

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  • how to call wcf service from another wcf service or class library? (5 replies)

    Hi! I??m having problem consuming a WCF Service. To call this Service, I created my own WCF Service with VS2008 own template. Then I added a Service Reference to the WCF Service to consume. So far so good, the service shows up in the Solution Explorer and all methods as well. Then I Created a Class to call the Service from my own WCF Service. And everytime I try to create an object I get the same ...

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  • Software Management Tools for Agile Process Development

    - by Graviton
    We would like to implement the Agile/ Scrum process in our daily software management, so as to provide better progress visibility and feature managements, here are some of the activities that we want to do: Daily stand-up Release cycles of 6 weeks with 3 2-week iterations. Having a product back-log of tasks (integrate with bugzilla) and bugs estimated out. Printing a daily burn down to make velocity visible. When used as motivator, it's great. Easy feature development tracking and full blown visibility, especially for the sales and stake holders ( this means that it must be a web based tool). My team is distributed, so physical whiteboards aren't feasible. Is there such a web based tool that meets our needs? I heard icescrum may be one, but I've never used it so I don't know. There are a few more suggestions as here, but I've never heard of them, anyone cares to elaborate or suggest new tools?

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  • Inserting multiple links to one image in Confluence

    - by Simon
    I am setting up a Wiki in Confluence v3.5.1 I have added a visio diagram (JPG) to a page (this diagram will take up most of the page) - This diagram depicts the workflow between developers and support and clients. I envisage users being able to click on different parts of the diagram and it to open up child pages with more details about that particular process (with videos on 'how-to' do that specific task, like log issues in Jira) However, from what I can see, there is no way from the Confluence editor to add multiple links to the one image, right? I looked at Anchors, but this does not look like it will do the job. So, what is the best option? I remember Dreamweaver having these sorts of tools built in, and there appears to be other utilities that can help put in image map HTML tags, but I cannot see a way of easily editing the HTML in Confluence editor. Also worried about the headache this could cause with managing future changes of the page.

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  • MOSS 2007 &ndash; WCM Blank WebPart Page Zone ID&rsquo;s

    - by Jeff Julian
    Here is the list of Zone ID’s for the Blank WebPart Page (BlankWebPartPage.aspx") that is part of the Publishing Portal with MOSS 2007: TitleBar Header TopLeftRow TopRightRow CenterLeftColumn CenterColumn CenterRightColumn Footer RightColumn I was in need of these and wasn’t able to find them with a simple search on Google so I wanted to share them with you. To get a list of WebPartZone objects for a page that a webpart lives on can be done with the following code:  foreach (WebPartZone zone in this.WebPartManager.Zones) {          this.Controls.Add(new LiteralControl(zone.ID + "<br />")); } Use this code in a webpart that inherits from Microsoft.SharePoint.WebPartPages.WebPart. This is a simple way to do the equivalent of a Response.Write while having the output in the webpart zone your part resides in.  It also saves you from attaching to the process and debugging with the watch or quick watch. Technorati Tags: MOSS,WebParts,BlankWebPartPage.aspx,Zones

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  • Goto for the Java Programming Language

    - by darcy
    Work on JDK 8 is well-underway, but we thought this late-breaking JEP for another language change for the platform couldn't wait another day before being published. Title: Goto for the Java Programming Language Author: Joseph D. Darcy Organization: Oracle. Created: 2012/04/01 Type: Feature State: Funded Exposure: Open Component: core/lang Scope: SE JSR: 901 MR Discussion: compiler dash dev at openjdk dot java dot net Start: 2012/Q2 Effort: XS Duration: S Template: 1.0 Reviewed-by: Duke Endorsed-by: Edsger Dijkstra Funded-by: Blue Sun Corporation Summary Provide the benefits of the time-testing goto control structure to Java programs. The Java language has a history of adding new control structures over time, the assert statement in 1.4, the enhanced for-loop in 1.5,and try-with-resources in 7. Having support for goto is long-overdue and simple to implement since the JVM already has goto instructions. Success Metrics The goto statement will allow inefficient and verbose recursive algorithms and explicit loops to be replaced with more compact code. The effort will be a success if at least twenty five percent of the JDK's explicit loops are replaced with goto's. Coordination with IDE vendors is expected to help facilitate this goal. Motivation The goto construct offers numerous benefits to the Java platform, from increased expressiveness, to more compact code, to providing new programming paradigms to appeal to a broader demographic. In JDK 8, there is a renewed focus on using the Java platform on embedded devices with more modest resources than desktop or server environments. In such contexts, static and dynamic memory footprint is a concern. One significant component of footprint is the code attribute of class files and certain classes of important algorithms can be expressed more compactly using goto than using other constructs, saving footprint. For example, to implement state machines recursively, some parties have asked for the JVM to support tail calls, that is, to perform a complex transformation with security implications to turn a method call into a goto. Such complicated machinery should not be assumed for an embedded context. A better solution is just to expose to the programmer the desired functionality, goto. The web has familiarized users with a model of traversing links among different HTML pages in a free-form fashion with some state being maintained on the side, such as login credentials, to effect behavior. This is exactly the programming model of goto and code. While in the past this has been derided as leading to "spaghetti code," spaghetti is a tasty and nutritious meal for programmers, unlike quiche. The invokedynamic instruction added by JSR 292 exposes the JVM's linkage operation to programmers. This is a low-level operation that can be leveraged by sophisticated programmers. Likewise, goto is a also a low-level operation that should not be hidden from programmers who can use more efficient idioms. Some may object that goto was consciously excluded from the original design of Java as one of the removed feature from C and C++. However, the designers of the Java programming languages have revisited these removals before. The enum construct was also left out only to be added in JDK 5 and multiple inheritance was left out, only to be added back by the virtual extension method methods of Project Lambda. As a living language, the needs of the growing Java community today should be used to judge what features are needed in the platform tomorrow; the language should not be forever bound by the decisions of the past. Description From its initial version, the JVM has had two instructions for unconditional transfer of control within a method, goto (0xa7) and goto_w (0xc8). The goto_w instruction is used for larger jumps. All versions of the Java language have supported labeled statements; however, only the break and continue statements were able to specify a particular label as a target with the onerous restriction that the label must be lexically enclosing. The grammar addition for the goto statement is: GotoStatement: goto Identifier ; The new goto statement similar to break except that the target label can be anywhere inside the method and the identifier is mandatory. The compiler simply translates the goto statement into one of the JVM goto instructions targeting the right offset in the method. Therefore, adding the goto statement to the platform is only a small effort since existing compiler and JVM functionality is reused. Other language changes to support goto include obvious updates to definite assignment analysis, reachability analysis, and exception analysis. Possible future extensions include a computed goto as found in gcc, which would replace the identifier in the goto statement with an expression having the type of a label. Testing Since goto will be implemented using largely existing facilities, only light levels of testing are needed. Impact Compatibility: Since goto is already a keyword, there are no source compatibility implications. Performance/scalability: Performance will improve with more compact code. JVMs already need to handle irreducible flow graphs since goto is a VM instruction.

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  • Using External Monitor with Laptop Monitor as separate monitors

    - by user14623
    I am trying to use 32"LCD monitor with my ubuntu 10.10 installation. I am trying to use my laptop screen and external monitor at the same time but having two separate desktops. I also want to use my laptop with 1280x800 resolution and external one with 1920 x 1080 using VGA. However, ubuntu sees my external LCD as a CRT and provide 13....x... resolution at the best not above. My graphics card driver is Nvidia 270.... driver. Is ubuntu capable of using two monitors separately or should i give up? Thank you

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