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  • How to set acpi=off for installation?

    - by Johan Helgø
    I'm trying to install Ubuntu 12.04 LTS 64bit from a USB created in Windows using the recommended software from pendrivelinux. The USB is tested on two laptops and works fine. The install does not work on my desktop PC, it either hangs with lots of text on the screen, or it just gives me a screen with garbled colors. Right now it hangs on "[3.925311] Initializing USB Mass Storage driver...", but it hangs on different spots every time I try. I know that acpi=off will fix this. On older versions, there used to be a pink screen with the icon of a keyboard, at that screen I could press ESC, and I would then get a long list of languages, I could choose English, and then I would get options for setting acpi=off, then install without any problems. This new install menu does not have those options. The (now black and white) "Installer boot menu"'s advanced options is blank. There simply are no advanced options. If I go to help, then press F6, I get to a help screen describing the different boot parameters. I see examples of writing "Install acpi=off" However, writing "install acpi=off" it gives an error saying "could not find kernel image: install". How can I install Ubuntu 12.04 with acpi=off? (Oh, btw, nothing happens if I press F6 in the "Installer boot menu")

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  • Security vulnerability and nda's [closed]

    - by Chris
    I want to propose a situation and gain insight from the communities thoughts. A customer, call them Customer X has a contract with a vendor, Vendor Y to provide an application and services. Customer X discovers a serious authentication vulnerability in Vendor Y's software. Vendor Y and Customer X has a discussion. Vendor Y acknowledges/confirms flaw. Vendor Y confirms they will put effort to fix. Customer X requests Vendor Y to inform all customers impacted by this. Vendor agrees. Fast forward 2 months, and the flaw has not been fixed. Patches were applied to mitigate but the flaw still exists. However, no customers were informed of issue. At this point customer X contacts Vendor Y to determine the status and understand why customer's were not informed. The vendor nicely reminds the customer they are under an NDA and are still working on the issue. A few questions/discussion pieces out of this. By discussing a software flaw with a vendor, does this imply you have agreed to any type of NDA disclosure? Additionally, what rights as does Customer X have to inform other customers of this vulnerability if vendor does not appear willing to comply? I (the op) am under the impression that when this situation occurs, you are supposed to notify vendor of issue, provide them with ample time to respond and if no response you are able to do what you wish with the information. I am thinking back to the MIT/subway incident where they contacted transit authorities, transit authorities didn't respond in a timely fashion so the students disclosed the information publicly on their own. Few things to note about this: I am not the customer in above situation, also lets assume for purposes of keeping discussion inline that customer X has no intentions of disclosing information, they are merely concerned and interested in making sure other customers are aware until it is fixed so they do not expierence a major security breach. (More information can be supplied if needed to add context to question. )

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  • Adding a CMS to an existing Magento shop

    - by user6341
    I am working on a project for 3 niche stores built on magento (using magento's multi-store function) that each get roughly 50k unique visitors a day. The sites don't currently have a blog or forum or any social networking aspects. Would like to add a cms to each site that can be centrally run and would like it to take over the front end content from Magento. Also would like it to maintain an online blog/publication of sorts with videos, articles, and the like with privileges to edit the content given to a dozen or so people with different privileges. Want to add a forum to each site that is fairly robust and to possibly add some social networking aspects down the road, so extandability and available plugins/mods in each cms is important. Other than shared login between the forums,blog/publication and store, would like to be able to integrate some content from the forums and blog/publication into the store as well. After researching this a bit, I am inclined towards Drupal, but I haven't found any modules to integrate it with Magento. Also, since the blog content will be done by about a dozen nontechnical people, I want something that is very easy to work with. Lastly, since the site gets a good amount of traffic, speed and security are very important. What CMS would you recommend integrating in this context? Deciding between Drupal, Wordpress and ModX. Also Plone as well. Thanks.

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  • How to use the unit of work and repository patterns in a service oriented enviroment

    - by A. Karimi
    I've created an application framework using the unit of work and repository patterns for it's data layer. Data consumer layers such as presentation depend on the data layer design. For example a CRUD abstract form has a dependency to a repository (IRepository). This architecture works like a charm in client/server environments (Ex. a WPF application and a SQL Server). But I'm looking for a good pattern to change or reuse this architecture for a service oriented environment. Of course I have some ideas: Idea 1: The "Adapter" design pattern Keep the current architecture and create a new unit of work and repository implementation which can work with a service instead of the ORM. Data layer consumers are loosely coupled to the data layer so it's possible but the problem is about the unit of work; I have to create a context which tracks the objects state at the client side and sends the changes to the server side on calling the "Commit" (Something that I think the RIA has done for Silverlight). Here the diagram: ----------- CLIENT----------- | ------------------ SERVER ---------------------- [ UI ] -> [ UoW/Repository ] ---> [ Web Services ] -> [ UoW/Repository ] -> [DB] Idea 2: Add another layer Add another layer (let say "local services" or "data provider"), then put it between the data layer (unit of work and repository) and the data consumer layers (like UI). Then I have to rewrite the consumer classes (CRUD and other classes which are dependent to IRepository) to depend on another interface. And the diagram: ----------------- CLIENT ------------------ | ------------------- SERVER --------------------- [ UI ] -> [ Local Services/Data Provider ] ---> [ Web Services ] -> [ UoW/Repository ] -> [DB] Please note that I have the local services layer on the current architecture but it doesn't expose the data layer functionality. In another word the UI layer can communicate with both of the data and local services layers whereas the local services layer also uses the data layer. | | | | | | | | ---> | Local Services | ---> | | | UI | | | | Data | | | | | | | ----------------------------> | |

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  • Slick2D + LWJGL collision system

    - by Connor W
    So I've been learning java for a while and have explored slick and lwjgl before but went away from using Slick for a while. But I've recently gone back to using it (as I'm making a platformer and Tiled will be really helpful). But here's where my problems begin: collision. I have a player polygon and I check to see if it's colliding with my tiled map with this method: public static boolean playerCollisionWith() { for(int i = 0; i < Blockmap.entities.size(); i++) { Block entity1 = (Block) Blockmap.entities.get(i); if(playerPoly.intersects(entity1.poly)) { return true; } } return false; } This would work normally but I'm using a different method for movement. Instead of just adding a speed variable to the player's x axis. I move like this: if(Keyboard.isKeyDown(Keyboard.KEY_RIGHT)) { speedX = Math.min(5, speedX + 1); moving = true; playerPoly.setX(x); if(playerCollisionWith()) { speedX = -5; playerPoly.setX(x); } } That Math.min call is what is messing me up =. I can't just call speedX = -5, because when I do the player "bounces" when the right mouse button is down and it's colliding. Bounces as in flashes back and forth REALLY quickly. But I don't really know how I would make it so that collisions on the y axis would work either, whether the player is jumping or not. So if I could get some help with how to fix this problem that would be great. Thank you for the help!

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  • Ubuntu 12.04 does not see windows already install on my computer (dual installation)

    - by jacinta
    I was trying to install the ubuntu 12.4 along side windows 7 on my new HP Pavilion 64k desktop with windows 7 computer but Ubuntu said that ( This computer has no detected operating system) and some one said (I suggest you chkdsk your Windows partition. I also suggest you resize the NTFS in WIndows then install Ubuntu to the free space.) Therefore I did (To shrink a simple or spanned volume using the Windows interface In Disk Management, right-click the simple or spanned volume you want to shrink. Click Shrink Volume…. Follow the instructions on your screen.) Then When I try to install ubuntu 12.4 after doing this, I received the same error. I was going to undo what I did but I see that I lose 1g when I do that so now what do I do? it says I can do a new simple volume and maybe then the space will no longer be unallocated. Please help me. I think I have a bad cd (ubuntu 12.4) cause from my research I see that I am not suppose to get a screen saying that (The computer has no detected operating system) I think this is a bad cd and I hope I did not mess up my computer. Please help. .................................................................................... O k I think I am following what you said about how to edit my question irrational john. I did chkdsk as you and actionparsnip (andrew-woodhead666) told me to AND ALSO did a lot of other things before I found out how to chkdsk. No problems. Thank you. Then I put back the space (extended) I took from system. I still was only able to put back 15 and not 16 so it is up to 99mb not back to 100mb. Then I shrank HP (C) as you told me, to 10 13,240 mb which is (12.93gb Unallocated). I did not change it into NTSF by doing the (New Simple Volume Action) I just left it. Then I tried to install UBUNTU 12.04 live CD amd64 and it gave me the results it was sometimes giving me before which is result (THAT Ubuntu) does not tell me weather I have or have not an already installed windows7. It just goes to a window that would have showed me information on what I have and on the bottom (DEVICE FOR BOOT LOADER INSTALLATION /dev/sda ) and the option to go BACK, QUIT, or INSTALL. (I think it is the INSTALLATION TYPE window). Therefore I do what I have been doing and I QUIT. What do I do now? Sorry that it seems like I cannot do anything on my own. On the Youtube video how to install ubuntu dual-boot alongside windows UBUNTU is installed so easy. The installation option page gives 3 options including dual instillation and the disk even lets you use a slider to slide to the size of the partition size you want. Yet my UBUNTU live cd is a mess and I checked it as one of you guys told me and got back information that it is good. Oh well this guy says you should press a control key to tell which device you are using to install ubuntu before the screen comes up. I guess cause it is old. This page also shows you easy stuff that do not show up on my cd. how to dual-boot UBUNTU and windows 7 P.S.. I saw this on the windows 7 website windows.microsoft.com/en-US/windows7/Formatting-disks-and-drives-frequently-asked-questions CREATE A BOOT PARTITION I HAD TO LEAVE OUT THE HTTP STUFF CAUSE I AM ONLY ALLOWED 2 ON A PAGE IT SAID To create a boot partition Warning Warning If you are installing different versions of Windows, you must install the earliest version first. If you don't do this, your computer may become inoperable. Open Computer Management by clicking the Start button Picture of the Start button, clicking Control Panel, clicking System and Security, clicking Administrative Tools, and then double-clicking Computer Management.? Administrator permission required If you're prompted for an administrator password or confirmation, type the password or provide confirmation. In the left pane, under Storage, click Disk Management. Right-click an unallocated region on your hard disk, and then click New Simple Volume. In the New Simple Volume Wizard, click Next. Type the size of the volume you want to create in megabytes (MB) or accept the maximum default size, and then click Next. Accept the default drive letter or choose a different drive letter to identify the volume, and then click Next. In the Format Partition dialog box, do one of the following: If you don't want to format the volume right now, click Do not format this volume, and then click Next. To format the volume with the default settings, click Next. For more information about formatting, see Formatting disks and drives: frequently asked questions. Review your choices, and then click Finish. AND THIS ON ANOTHER PAGE. Formatting disks and drives: frequently asked questions Hard disks, the primary storage devices on your computer, need to be formatted before you can use them. When you format a disk, you configure it with a file system so that Windows can store information on the disk. Hard disks in new computers running Windows are already formatted. If you buy an additional hard disk to expand the storage of your computer, you might need to format it. Storage devices such as USB flash drives and flash memory cards usually come preformatted by the manufacturer, so you probably won't need to format them. CDs and DVDs, on the other hand, use different formats from hard disks and removable storage devices. For information about formatting CDs and DVDs, see Which CD or DVD format should I use? Warning Warning Formatting erases any existing files on a hard disk. If you format a hard disk that has files on it, the files will be deleted. WHAT I DID WAS I GOT TO COMPUTER MANAGEMENT SECTION THEN I CLICKED ON DRIVE HP(C) (it put stripes on to show it is selected) Then I click on ACTION selected ALL TASKS AND THEN selected SHRINK VOLUME and then chose how much space from what it was giving me that I wanted. (12.93gb) AND THAT WAS ALL I DID. THEN I TRIED TO INSTALL UBUNTU i NEVER GOT THE 3RD SCREEN THAT IS IN THE VIDEO I INCLUDED (THE YOUTUBE WITH THE ENGLISH GUY) INSTALLATION TYPE I ALSO DID NOT GET THE 4TH SCREEN THAT ALLOWS YOU TO SELECT PARTITION SIZE what i got next was the 2nd INSTILLATION TYPE window shown on the (LINUX BS DOS.COM) PAGE THAT I INCLUDED and it showed no information about any drives (no drives /partition or stuff was shown) only the Boot Loader statement and the dev/sda bar and that's why i did not press install but chose to QUIT. SORRY I JUST NOW SAW YOUR ANSWER IRRATIONAL JOHN. I SHRANK HP(C) BY 12.93GB MY UNALLOCATED SPACE IS NOW 12.93GB HP(C) = 907.17gb NTSF...YOU ARE CORRECT WITH EVERYTHING YOU SAID This is what i read on (http://)windows.microsoft.com/en-US/windows7/Create-a-boot-partition I am only allowed 2 links Create a boot partition You must be logged on as an administrator to perform these steps. A boot partition is a partition that contains the files for the Windows operating system. If you want to install a second operating system on your computer (called a dual-boot or multiboot configuration), you need to create another partition on the hard disk, and then install the additional operating system on the new partition. Your hard disk would then have one system partition and two boot partitions. (A system partition is the partition that contains the hardware-related files. These tell the computer where to look to start Windows.) To create a partition on a basic disk, there must be unallocated disk space on your hard disk. With Disk Management, you can create a maximum of three primary partitions on a hard disk. You can create extended partitions, which include logical drives within them, if you need more partitions on the disk. Picture of disk space in Computer ManagementUnallocated disk space If there is no unallocated space, you will either need to create space by shrinking or deleting an existing partition or by using a third-party partitioning tool to repartition your hard disk. For more information, see Can I repartition my hard disk? To create a boot partition Warning Warning If you are installing different versions of Windows, you must install the earliest version first. If you don't do this, your computer may become inoperable. Open Computer Management by clicking the Start button Picture of the Start button, clicking Control Panel, clicking System and Security, clicking Administrative Tools, and then double-clicking Computer Management.? Administrator permission required If you're prompted for an administrator password or confirmation, type the password or provide confirmation. In the left pane, under Storage, click Disk Management. Right-click an unallocated region on your hard disk, and then click New Simple Volume. In the New Simple Volume Wizard, click Next. Type the size of the volume you want to create in megabytes (MB) or accept the maximum default size, and then click Next. Accept the default drive letter or choose a different drive letter to identify the volume, and then click Next. In the Format Partition dialog box, do one of the following: If you don't want to format the volume right now, click Do not format this volume, and then click Next. To format the volume with the default settings, click Next. For more information about formatting, see Formatting disks and drives: frequently asked questions. Review your choices, and then click Finish. I did what you told me @irrational john and this is the screen shot. I ENTERED ubuntu@ubuntu:~$ sudo os-prober computer did not respond so I entered ubuntu@ubuntu:~$ sudo apt-get -y remove dmraid computer responded with Reading package lists... Done Building dependency tree Reading state information... Done The following packages will be REMOVED: dmraid 0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded. After this operation, 141 kB disk space will be freed. (Reading database ... 147515 files and directories currently installed.) Removing dmraid ... update-initramfs is disabled since running on read-only media Processing triggers for man-db ... I entered ubuntu@ubuntu:~$ sudo os-prober Computer Responded with /dev/sda1:Windows 7 (loader):Windows:chain /dev/sda3:Windows Recovery Environment (loader):Windows1:chain ubuntu@ubuntu:~$ ............... @obsessiveFOSS I don't know what is a Grub menu and I do not know what is the Ubuntu boot option The answer you gave to me was correct. This one {This apparently removes the dmraid metadata. After doing that, you can use the desktop icon Install Ubuntu 12.04 LTS to start the Ubuntu installer. This time the Installation Type window should contain the option to Install Ubuntu alongside Windows 7.} This is what I decided to do. I did not see the rest of your help 'till now. Never the less. I think the best thing for me to do now is to get a cheap used laptop and either do a dual installation or just install Ubuntu on to it. This way if I have any issues that I cannot solve like the one I had here, at least I will still have a usable computer to work on and to use to get answers with because I am not an expert like the people on this forum. Thanks a lot I will try to keep learning and do research enough to some day help someone else.

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  • How to protect UI components using OPSS Resource Permissions

    - by frank.nimphius
    v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} Normal 0 false false false false EN-US X-NONE X-NONE /* 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:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} table.MsoTableGrid {mso-style-name:"Table Grid"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-priority:59; mso-style-unhide:no; border:solid black 1.0pt; mso-border-alt:solid black .5pt; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-border-insideh:.5pt solid black; mso-border-insidev:.5pt solid black; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman","serif";} ADF security protects ADF bound pages, bounded task flows and ADF Business Components entities with framework specific JAAS permissions classes (RegionPermission, TaskFlowPermission and EntityPermission). If used in combination with the ADF security expression language and security checks performed in Java, this protection already provides you with fine grained access control that can also be used to secure UI components like buttons and input text field. For example, the EL shown below disables the user profile panel tabs for unauthenticated users: <af:panelTabbed id="pt1" position="above">   ...   <af:showDetailItem        text="User Profile" id="sdi2"                                       disabled="#{!securityContext.authenticated}">   </af:showDetailItem>   ... </af:panelTabbed> The next example disables a panel tab item if the authenticated user is not granted access to the bounded task flow exposed in a region on this tab: <af:panelTabbed id="pt1" position="above">   ...   <af:showDetailItem text="Employees Overview" id="sdi4"                        disabled="#{!securityContext.taskflowViewable         ['/WEB-INF/EmployeeUpdateFlow.xml#EmployeeUpdateFlow']}">   </af:showDetailItem>   ... </af:panelTabbed> Security expressions like shown above allow developers to check the user permission, authentication and role membership status before showing UI components. Similar, using Java, developers can use code like shown below to verify the user authentication status: ADFContext adfContext = ADFContext.getCurrent(); SecurityContext securityCtx = adfContext.getSecurityContext(); boolean userAuthenticated = securityCtx.isAuthenticated(); Note that the Java code lines use the same security context reference that is used with expression language. But is this all that there is? No ! The goal of ADF Security is to enable all ADF developers to build secure web application with JAAS (Java Authentication and Authorization Service). For this, more fine grained protection can be defined using the ResourcePermission, a generic JAAS permission class owned by the Oracle Platform Security Services (OPSS).  Using the ResourcePermission  class, developers can grant permission to functional parts of an application that are not protected by page or task flow security. For example, an application menu allows creating and canceling product shipments to customers. However, only a specific user group - or application role, which is the better way to use ADF Security - is allowed to cancel a shipment. To enforce this rule, a permission is needed that can be used declaratively on the UI to hide a menu entry and programmatically in Java to check the user permission before the action is performed. Note that multiple lines of defense are what you should implement in your application development. Don't just rely on UI protection through hidden or disabled command options. To create menu protection permission for an ADF Security enable application, you choose Application | Secure | Resource Grants from the Oracle JDeveloper menu. The opened editor shows a visual representation of the jazn-data.xml file that is used at design time to define security policies and user identities for testing. An option in the Resource Grants section is to create a new Resource Type. A list of pre-defined types exists for you to create policy definitions for. Many of these pre-defined types use the ResourcePermission class. To create a custom Resource Type, for example to protect application menu functions, you click the green plus icon next to the Resource Type select list. The Create Resource Type editor that opens allows you to add a name for the resource type, a display name that is shown when granting resource permissions and a description. The ResourcePermission class name is already set. In the menu protection sample, you add the following information: Name: MenuProtection Display Name: Menu Protection Description: Permission to grant menu item permissions OK the dialog to close the resource permission creation. To create a resource policy that can be used to check user permissions at runtime, click the green plus icon in the Resources section of the Resource Grants section. In the Create Resource dialog, provide a name for the menu option you want to protect. To protect the cancel shipment menu option, create a resource with the following settings Resource Type: Menu Protection Name: Cancel Shipment Display Name: Cancel Shipment Description: Grant allows user to cancel customer good shipment   A new resource Cancel Shipmentis added to the Resources panel. Initially the resource is not granted to any user, enterprise or application role. To grant the resource, click the green plus icon in the Granted To section, select the Add Application Role option and choose one or more application roles in the opened dialog. Finally, you click the process action to define the policy. Note that permission can have multiple actions that you can grant individually to users and roles. The cancel shipment permission for example could have another action "view" defined to determine which user should see that this option exist and which users don't. To use the cancel shipment permission, select the disabled property on a command item, like af:commandMenuItem and click the arrow icon on the right. From the context menu, choose the Expression Builder entry. Expand the ADF Bindings | securityContext node and click the userGrantedResource option. Hint: You can expand the Description panel below the EL selection panel to see an example of how the grant should look like. The EL that is created needs to be manually edited to show as #{!securityContext.userGrantedResource[               'resourceName=Cancel Shipment;resourceType=MenuProtection;action=process']} OK the dialog so the permission checking EL is added as a value to the disabled property. Running the application and expanding the Shipment menu shows the Cancel Shipments menu item disabled for all users that don't have the custom menu protection resource permission granted. Note: Following the steps listed above, you create a JAAS permission and declaratively configure it for function security in an ADF application. Do you need to understand JAAS for this? No!  This is one of the benefits that you gain from using the ADF development framework. To implement multi lines of defense for your application, the action performed when clicking the enabled "Cancel Shipments" option should also check if the authenticated user is allowed to use process it. For this, code as shown below can be used in a managed bean public void onCancelShipment(ActionEvent actionEvent) {       SecurityContext securityCtx =       ADFContext.getCurrent().getSecurityContext();   //create instance of ResourcePermission(String type, String name,   //String action)   ResourcePermission resourcePermission =     new ResourcePermission("MenuProtection","Cancel Shipment",                            "process");        boolean userHasPermission =          securityCtx.hasPermission(resourcePermission);   if (userHasPermission){       //execute privileged logic here   } } Note: To learn more abput ADF Security, visit http://download.oracle.com/docs/cd/E17904_01/web.1111/b31974/adding_security.htm#BGBGJEAHNote: A monthly summary of OTN Harvest blog postings can be downloaded from ADF Code Corner. The monthly summary is a PDF document that contains supporting screen shots for some of the postings: http://www.oracle.com/technetwork/developer-tools/adf/learnmore/index-101235.html

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  • Advices fo starting a video game design career

    - by Allen Gabriel Baker
    I'm 24 and have a passion for video games and game-design. I've decided I want to design video games as my career. I have no experience with designing video games or coding but I'm interested and willing to learn. I want a job at any level but what would I need to land a job? I have no college experience and I have no money. What is a cheap school, or do I really need to go to school for this, or can I learn on my own? Is it possible to do this with no money? I'm literally broke but I want this so bad I feel like its the only career I'll enjoy. I want to call up company's and ask them what they are looking for in someone they want to hire, is that a good idea? Also I don't know the history of video game design and I don't want to sound like a dummy when someone says something about this field or talks about a famous designer and I have no idea who they're talking about. So what is key info when it comes to this field and where should I find it? Hopefully some of you guys and girls can help me out: I know in the future I will create something everyone will enjoy and you guys will remember when you gave me advice and I will always remember you guys for helping me. I'm gifted I know I am and I want to share my gift with the rest of the world by making games that change the Industry. Help me out please.

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  • HTG Projects: Create a Pop Art Sci-Fi Poster with an Inkjet Printer

    - by Eric Z Goodnight
    Looking to decorate your house with some cool artwork? Grab some of your favorite Sci-Fi pics and some surprisingly simple tools, and create a Pop Art style poster in minutes. Through a simple process called “posterization,” you can reduce any graphic into a cool limited graphic with a similar look that Andy Warhol would have used when he created his famous Marylin Monroe image in the sixties. Pick a theme, grab some images, and get ready to decorate your home with a surprisingly easy and surprisingly cool poster any inkjet printer can produce Latest Features How-To Geek ETC HTG Projects: How to Create Your Own Custom Papercraft Toy How to Combine Rescue Disks to Create the Ultimate Windows Repair Disk What is Camera Raw, and Why Would a Professional Prefer it to JPG? The How-To Geek Guide to Audio Editing: The Basics How To Boot 10 Different Live CDs From 1 USB Flash Drive The 20 Best How-To Geek Linux Articles of 2010 Arctic Theme for Windows 7 Gives Your Desktop an Icy Touch Install LibreOffice via PPA and Receive Auto-Updates in Ubuntu Creative Portraits Peek Inside the Guts of Modern Electronics Scenic Winter Lane Wallpaper to Create a Relaxing Mood Access Your Web Apps Directly Using the Context Menu in Chrome The Deep – Awesome Use of Metal Objects as Deep Sea Creatures [Video]

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  • Static classes and/or singletons -- How many does it take to become a code smell?

    - by Earlz
    In my projects I use quite a lot of static classes. These are usually classes that naturally seem to fit into a single-instance type of thing. Many times I use static classes and recently I've started using some singletons. How many of these does it take to become a code smell? For instance, in my recent project which has a lot of static classes is an Authentication library for ASP.Net. I use a static class for a helper class that fixes ASP.Net error codes so it can be used like CustomErrorsFixer.Fix(Context); Or my authentication class itself is a static class //in global.asax's begin_application Authentication.SomeState="blah"; Authentication.SomeOption=true; //etc //in global.asax's begin_request Authentication.Authenticate(); When are static or singleton classes bad to use? Am I doing it wrong, or am I just in a project that by definition has very little per-instance state associated with it? The only per-instance state I have is stored in HttpContext.Current.Items like so: /// <summary> /// The current user logged in for the HTTP request. If there is not a user logged in, this will be null. /// </summary> public static UserData CurrentUser{ get{ return HttpContext.Current.Items["fscauth_currentuser"] as UserData; //use HttpContext.Current as a little place to persist static data for this request } private set{ HttpContext.Current.Items["fscauth_currentuser"]=value; } }

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  • Invitation: HARNESSING THE POWER OF FUSION

    - by mseika
    HARNESSING THE POWER OF FUSION: IMPLEMENT AND EXTEND ORACLE'S NEXT-GENERATION APPLICATIONS TO MEET CHANGING CLIENT NEEDSBRUSSELS, BELGIUM, APRIL 23RD, 2012 - APRIL 24th, 2012 The pace of business continues to accelerate. Clients demand solutions that not only meet their needs today, but evolve as quickly as markets, competition and technology. Oracle Fusion Applications can help you to anticipate and satisfy your clients changing needs. Designed for an era of business disruption, they co-exist with existing IT investments, but leverage new technologies (such as mobility and SOA) and breakthrough Cloud computing delivery models as you need them. They also support unprecedented levels of extensibility. To show you how, Oracle's Product Development organization invites you to join an exclusive Fusion Applications presentation and demonstration event for Oracle partners in Europe. This intensive 2-day event will illustrate Fusion Applications capabilities that can enhance ROI for your clients across four major product families: Financials, Procurement and Project Portfolio Management (ERP) Customer Relationship Management (CRM) Human Capital Management (HCM) Supply Chain Management (SCM) Led by Oracle Product Development personnel, this event will also demonstrate how to extend the Fusion Applications user experience, data model, business process and reporting using new Functional Setup and Composer technologies. These can help you address unique client needs without impacting future upgrades. This presentation and demonstration event is intended for consulting business development and delivery personnel. Reserve your Seats today for April 23rd - 24th event To register to this event CLICK HERE For further information please contact me at [email protected]. Best regards Paul ThompsonSenior Director EMEA Alliances and Solutions Partner Programs Markku RouhiainenDirector, Applications Partner EnablementWestern Europe

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  • Invitation: HARNESSING THE POWER OF FUSION

    - by mseika
    HARNESSING THE POWER OF FUSION: IMPLEMENT AND EXTEND ORACLE'S NEXT-GENERATION APPLICATIONS TO MEET CHANGING CLIENT NEEDSBRUSSELS, BELGIUM, APRIL 23RD, 2012 - APRIL 24th, 2012 The pace of business continues to accelerate. Clients demand solutions that not only meet their needs today, but evolve as quickly as markets, competition and technology. Oracle Fusion Applications can help you to anticipate and satisfy your clients changing needs. Designed for an era of business disruption, they co-exist with existing IT investments, but leverage new technologies (such as mobility and SOA) and breakthrough Cloud computing delivery models as you need them. They also support unprecedented levels of extensibility. To show you how, Oracle's Product Development organization invites you to join an exclusive Fusion Applications presentation and demonstration event for Oracle partners in Europe. This intensive 2-day event will illustrate Fusion Applications capabilities that can enhance ROI for your clients across four major product families: Financials, Procurement and Project Portfolio Management (ERP) Customer Relationship Management (CRM) Human Capital Management (HCM) Supply Chain Management (SCM) Led by Oracle Product Development personnel, this event will also demonstrate how to extend the Fusion Applications user experience, data model, business process and reporting using new Functional Setup and Composer technologies. These can help you address unique client needs without impacting future upgrades. This presentation and demonstration event is intended for consulting business development and delivery personnel. Reserve your Seats today for April 23rd - 24th event To register to this event CLICK HERE For further information please contact me at [email protected]. Best regards Paul ThompsonSenior Director EMEA Alliances and Solutions Partner Programs Markku RouhiainenDirector, Applications Partner EnablementWestern Europe

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  • C# : When to go Fluent

    - by ach
    In many respects I really like the idea of Fluent interfaces, but with all of the modern features of C# (initializers, lambdas, named parameters) I find myself thinking, "is it worth it?", and "Is this the right pattern to use?". Could anyone give me, if not an accepted practice, at least their own experience or decision matrix for when to use the Fluent pattern? Conclusion: Some good rules of thumb from the answers so far: Fluent interfaces help greatly when you have more actions than setters, since calls benefit more from the context pass-through. Fluent interfaces should be thought of as a layer over top of an api, not the sole means of use. The modern features such as lambdas, initializers, and named parameters, can work hand-in-hand to make a fluent interface even more friendly. ... Edit: Here is an example of what I mean by the modern features making it feel less needed. Take for example a (perhaps poor example) Fluent interface that allows me to create an Employee like: Employees.CreateNew().WithFirstName("Peter") .WihtLastName("Gibbons") .WithManager() .WithFirstName("Bill") .WithLastName("Lumbergh") .WithTitle("Manager") .WithDepartment("Y2K"); Could easily be written with initiallizers like: Employees.Add(new Employee() { FirstName = "Peter", LastName = "Gibbons", Manager = new Employee() { FirstName = "Bill", LastName = "Lumbergh", Title = "Manager", Department = "Y2K" } }); I could also have used named parameters in a constructors in this example.

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  • Generic Repository with SQLite and SQL Compact Databases

    - by Andrew Petersen
    I am creating a project that has a mobile app (Xamarin.Android) using a SQLite database and a WPF application (Code First Entity Framework 5) using a SQL Compact database. This project will even eventually have a SQL Server database as well. Because of this I am trying to create a generic repository, so that I can pass in the correct context depending on which application is making the request. The issue I ran into is my DataContext for the SQL Compact database inherits from DbContext and the SQLite database inherits from SQLiteConnection. What is the best way to make this generic, so that it doesn't matter what kind of database is on the back end? This is what I have tried so far on the SQL Compact side: public interface IRepository<TEntity> { TEntity Add(TEntity entity); } public class Repository<TEntity, TContext> : IRepository<TEntity>, IDisposable where TEntity : class where TContext : DbContext { private readonly TContext _context; public Repository(DbContext dbContext) { _context = dbContext as TContext; } public virtual TEntity Add(TEntity entity) { return _context.Set<TEntity>().Add(entity); } } And on the SQLite side: public class ElverDatabase : SQLiteConnection { static readonly object Locker = new object(); public ElverDatabase(string path) : base(path) { CreateTable<Ticket>(); } public int Add<T>(T item) where T : IBusinessEntity { lock (Locker) { return Insert(item); } } }

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  • unity top menu keyboard shortcuts for desktop alone, no programs running

    - by user108754
    Alt+F1 accesses the launcher menu, with arrow keys to navigate the list (side menu). Alt+F10 accesses the top bar in an open application (or Alt+an underlined menu item letter), which allows access to the global ubuntu settings in the top right (battery, wifi/networking, audio, time/calendar, user, power). Alt+F10, when no application is open and you're just staring at the desktop, accesses those ubuntu settings immediately. But the top menu bar does list, in the top left, menu commands for the desktop per se (create new folder, go home, help, start server, etc). These can be accessed only by mouse hovering and click. No way to get to them only by keyboard (arrow keys just cycle through the settings, don't jump over to the left side of the top bar). Is there a keyboard shortcut way to access the desktop menu bar for manipulating icons on your desktop and other general things? Or is this a work in progress for unity? If you use the context menu key (or some equivalent you've set to generate that signal) along with other shortcuts for working on the desktop, you can cover most of the functionality of the top menu bar. However, I don't want to memorize those keys to become proficient. I just want a way to open and browse through those menu items (and they aren't ALL available through hotkeys anyway).

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  • MEncoder Install on Ubuntu

    - by Tauqeer Ahmad
    I am writing this after checking almost all the posts but none of those solved my problem. I am trying to install mencoder to process some videos but there are strange errors coming. For examples when I try sudo apt-get install mencoder the following errors comes out: Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: mencoder : Depends: mplayer Depends: libasound2 (> 1.0.24.1) Depends: libavcodec53 (>= 4:0.8~beta2-2) but it is not installable or libavcodec-extra-53 (>= 4:0.8~beta2-2) but it is not going to be installed Depends: libavformat53 (>= 4:0.8~beta2-2) but it is not installable or libavformat-extra-53 (>= 4:0.8~beta2-2) but it is not going to be installed Depends: libcdparanoia0 (>= 3.10.2+debian) but it is not installable Depends: libenca0 (>= 1.9) but it is not installable Depends: libfontconfig1 (>= 2.8.0) but it is not installable Depends: libgif4 (>= 4.1.4) but it is not installable Depends: libjpeg8 (>= 8c) but it is not installable Depends: liblzo2-2 but it is not installable Depends: libsmbclient (>= 3.0.24) but it is not installable Depends: libspeex1 (>= 1.2~beta3-1) but it is not installable Depends: libtheora0 (>= 1.0) but it is not installable E: Unable to correct problems, you have held broken packages. Can anyone help to solve this issue. I tried to find static builds of MEncoder but could not.

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  • Install Adobe AIR on Ubuntu/Linux

    Since quite some time Adobe Technologies released the Linux version of Adobe AIR to bring web applications and widgets to your desktop. Installing new applications on a Linux system is not always as easy as switching the computer on. The following instructions might be helpful to install Adobe AIR on any Linux system. First of all, get the latest installer of Adobe AIR from http://get.adobe.com/air/ - as of writing this article the file name is AdobeAIRInstaller.bin. Save the download in your preferred folder. Now, there are two ways to run the installer - visual style or console style. Visual Installation Launch your favorite or standard file manager like thunar or nautilus and browse to the folder where the AdobeAIRInstaller.bin has been saved. Right click on the file and choose 'Properties' in the context menu Set 'Execute' permissions and confirm modifications with OK Rename file into AdobeAIRInstaller Double click and follow the instructions Using the console Open a terminal like xterm Change into the directory where you stored the download Run this command:[code]chmod +x AdobeAIRInstaller.bin[/code] Now run this command:[code]sudo ./AdobeAIRInstaller.bin[/code] The normal installer will open, install it. From now whenever you download a .air file, just double click it and it will be installed. Troubleshooting In case that the installation does not start properly, try to install via console. This gives you more details about the reasons. Should you run into something like this: [code]AdobeAIRInstaller.bin: 1: Syntax error: "(" unexpected[/code] Double check the execute permission of the installer file and try again.

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  • Bot strategy in an arena

    - by joulesm
    I am writing the player's behavior for an arena game, and I'm wondering if you could offer some strategies. I'm writing it in Python, but I'm just interested in the high level game play. Here are the game aspects: Arena is a circle of a given size. The arena's size shrinks every round to help break any ties. Players are much smaller circles, and can be on teams of 1 or 2 players. Players attack by colliding with other players, and based on the physics of the collision (speed of both players, angle), one could force another player out of the arena. Once a player is out of the arena, they are out of the game (for that round). The goal is to be on the only team with players left in the arena. All other players have been pushed (through collisions or mistakes) out of the arena. It is possible for there to be no winner if the last two players exit the arena at the same time. Once the player has been programmed, the game just runs. There is no human intervention in the game. I'm thinking it's easiest to implement a few simple programmatic rules for my player to follow. For example, stay close to center of the arena, attack opponents from the inner side of the arena, etc. Are there any good simple game strategies? Would adding a random aspect to the game help? For example, to avoid predictability by the other team or something. Thanks in advance.

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  • Design Pattern Advice for Bluetooth App for Android

    - by Aimee Jones
    I’m looking for some advice on which patterns would apply to some of my work. I’m planning on doing a project as part of my college work and I need a bit of help. My main project is to make a basic Android bluetooth tracking system where the fixed locations of bluetooth dongles are mapped onto a map of a building. So my android app will regularly scan for nearby dongles and triangulate its location based on signal strength. The dongles location would be saved to a database along with their mac addresses to differentiate between them. The android phones location will then be sent to a server. This information will be used to show the phone’s location on a map of the building, or map of a route taken, on a website. My side project is to choose a suitable design pattern that could be implemented in this main project. I’m still a bit new to design patterns and am finding it hard to get my head around ones that may be suitable. I’ve heard maybe some that are aimed at web applications for the server side of things may be appropriate. My research so far is leading me to the following: Navigation Strategy Pattern Observer Pattern Command Pattern News Design Pattern Any advice would be a great help! Thanks

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  • IoT? Time for Enterprise Architecture

    - by OTN ArchBeat
    Of course you've been listening to the latest OTN ArchBeat Podcast on the challenges and opportunities in the Internet of Things. If so, you'll also be interested in ZDNet blogger Joe McKendricks' recent post, Will the 'Internet of Things' make CIOs' jobs harder?. In that post McKendrick offers this important bit of advice that will certainly have architects saying "I told you so." Enterprises need to develop architectural approaches to the management of data. Meaning the development of repeatable processes to source, ingest, transform and store information. For years, IT managers simply bought more hardware and addressed data with on-off integration projects. Now it's time for enterprise architecture. IoT is an important new phase in the evolution of enterprise IT. Challenging? You bet! But meeting any such challenge requires big, broad thinking and planning. In that context Enterprise Architecture has always been important. But as IoT gains traction and speed, enterprise architecture should be top of mind for all concerned.

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  • Releasing an open source project without getting embarrassed

    - by Hopeful
    I've been working by myself on a fairly large open source project for quite a while and it's nearing the point where I'd like to release it. However, I'm self-taught and I don't really know anyone who could adequately review my project. A few years ago, I had released a small bit of code which pretty much got ripped apart (in a critical sense) on the forum where I released it. Even though the code worked, the criticism was accurate but brutal. It prompted me to begin searching for best practices for everything and in the end I feel that it made me a much better developer. I've gone over everything in my project so many times trying to make it perfect that I've lost count. I believe in my project and think it has the potential to help a lot of people and I feel like I've done some cool things in interesting ways with it. Still, because I'm self-taught, I can't help but wonder what gaps exist in my self-education. The way my code was ripped apart last time isn't something I'd like to repeat. I think my two biggest fears with releasing my project that I've poured countless hours into are being absolutely embarrassed because I missed some patently obvious things because of my self-education or, worse, releasing it to the sound of crickets. Is there anyone who has been in a similar situation? I'm not afraid of constructive criticism, so long as it is constructive and not just a rant on how I screwed up. I know there is a code review site on StackExchange, but it's not really set up for large projects and I didn't feel like the community there is large enough yet to get good feedback if I were to post parts of my project piecemeal (I tried with one file). What can I do to give my project at least some measure of success without getting embarrassed or devestated in the process?

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  • Ubuntu and bumblebee and intel problem

    - by LnxSlck
    I have a brain teaser that i can't solve. When 12.04 (64bits) came out, i did a fresh install and then installed bumblebee with: sudo add-apt-repository ppa:bumblebee/stable sudo apt-get install bumblebee bumblebee-nvidia And Ubuntu recognized (System Settings - Details) Intel Card for primary card, and i could launch applications with optirun. I have: 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 01:00.0 VGA compatible controller: NVIDIA Corporation GF119 [GeForce GT 520MX] (rev ff) Now, a few days back, i did the exact same thing, installed from the same DVD everything the same, installed bumblebee the same way. Nvidia with Optirun works fine, but Ubuntu doesn't have 3D effects: root@deathstar:~# optirun /usr/lib/nux/unity_support_test -p OpenGL vendor string: NVIDIA Corporation OpenGL renderer string: GeForce GT 520MX/PCIe/SSE2 OpenGL version string: 4.2.0 NVIDIA 295.40 Not software rendered: yes Not blacklisted: yes GLX fbconfig: yes GLX texture from pixmap: no GL npot or rect textures: yes GL vertex program: yes GL fragment program: yes GL vertex buffer object: yes GL framebuffer object: yes GL version is 1.4+: yes Unity 3D supported: no I never did anything to install Intel drivers (except installing mesa-utils), before bumblebee got everything working, but now i can't get Ubuntu to get Unity with 3D. Can someone help me please get Unity 3d working? Your help will be much appreciated

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  • Identity Propagation for Web Service - 11g

    - by Prakash Yamuna
    I came across this post from Beimond on how to do identity propagation using OWSM.As I have mentioned in the past here, here and here - Beimond has a number of excellent posts on OWSM. However I found one part of his comment puzzling. I quote: "OWSM allows you to pass on the identity of the authenticated user to your OWSM protected web service ( thanks to OPSS ), this username can then be used by your service. This will work on one or between different WebLogic domains. Off course when you don't want to use OWSM you can always use Oracle Access Manager OAM which can do the same." The sentence in red highlights the issue i find puzzling. In fact I just discussed this particular topic recently here. So let me try and clarify on a few points: a) OAM is used for Web SSO. b) OWSM is used for securing Web Services. You cannot do identity propagation using OAM for Web Services. c) You use SAML to do identity propagation across Web Services. OAM also supports SAML - but that is the browser profile of SAML relevant in the context of Web SSO and is not related to the SAML Token Profile defined as part of the WS-Security spec.

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  • Bash History not containing all history and blank after reboot, how to resolve?

    - by TryTryAgain
    I've recently upgraded from 13.04 to 13.10 and realized my terminal bash history is not surviving reboots. cat ~/.bash_history gave me a permissions denied error. I, possibly unnecessarily or wrongly, issued a chmod 777 ~/.bash_history to see if that would help...and although I could then cat and read some contents it contained not much of anything as far as history. I also tried sudo rm ~/.bash_history after reading bash history not being preserved Strangely, after doing that, I typed a few test commands, ls, ls -lah ... and upon pressing the up arrow to go back through history it contained those two commands as well as the odd history from some far off time in the past but very few results and not the hundreds of commands I typed earlier in the day. Is there a new place bash history is stored? How can removing ~/.bash_history not get rid of the commands that are somehow lingering? I am not certain, but I believe my root bash history is acting normal. My user bash history is what's causing me trouble. Any help and guidance in tracking down and solving this problem is appreciated.

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  • Use Enterprise Manager Cloud Control to monitor OBIEE 11.1.1.7.x Dashboards

    - by Torben Hein -Oracle
    (in via Senthil )  If your OBIEE 11.1.1.7.x is set up in the following way: The OBIEE repository is an Oracle Database and is set up as a data warehouse Usage tracking is enabled in OBIEE. ( For information on how to enable usage tracking in OBIEE, refer to the following link: Setting Up Usage Tracking in Oracle BI 11g ) The OBIEE instance is discovered in EM Cloud Control. ( For information on how to discover an OBIEE instance in Cloud Control, refer to the following link: Discovering Oracle Business Intelligence Instance and Oracle Essbase Targets ) The OBIEE repository is discovered in EM Cloud Control. ( For information on how to discover an Oracle database, refer to the following link: Discovering, Promoting, and Adding Database Targets ) then we've got news for you: KM Article:  OBIEE 11g: How To Diagnose Slowly Performing Dashboards using Enterprise Manager Cloud Control (Doc ID 1668236.1) takes you step by step through monitoring the SQL query performance behind your OBIEE dashboard. This Diagnostic approach ... .. will help you piece together information on BI dashboard performance, e.g. processing time from the different layers of the BI system including the repository. .. should enable you to get to the bottom of slow dashboards by using the wealth of information available in EM Cloud Control on OBIEE and Oracle DB. .. will NOT fix any performance issues on its own, but will help identify bottlenecks while processing dashboard requests. (layout and post: Torben, authorized: Lia)

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