Welcome to TechScreen

Welcome to the TechScreen site. This side shall support the exchange of knowledge in the domain of Web Engineering and related aspects. As a side effect, this side is used for research on knowledge management technologies. User can pose challenges in the problem domain and can participate in quizzes. Further a bibliography about arcticles in different related domains is continously extended. Finally, questionnaires on different issues are provided. To be able to participate you need an account and a password from TU Wien's TISS system.

User input (mouse clicks) disabled on startup when full disk encryption, mobile accounts are enabled on OS X 10.9

Discover a work around for bug in OS X 10.9 where under some circumstances when full disk encryption,Filevault and mobile account features are enabled the system prevents the user from selecting a specific user using the mousepad, thereby preventing the user from authenticating and unlocking the disk, prior to being presented with the standard login screen for the user account. Indicators that you are experiencing this issue: Upon startup there may be two user accounts for your single mobile account enabled user.
Submitted by Donald Stevens on Wed, 12/10/2014 - 15:22

Missing volume icon

the volume icon disappears and nothing will help to get it back, including restarting the computer, so what to do?? it can be quite a pain especially if you don't have keyboard shortcuts to access the volume control,
Submitted by Solomon Kahsai on Wed, 12/10/2014 - 10:32

automatic rgb to cmyk conversion

With this technique you can get as close as possible to getting cmyk images that look like their original RGB without overflow of black ink by changing the red channel into the cyan channel, the green channel into the magenta channel, and the blue channel into the yellow channel using multi channeling. Moreover you will do this in a script so that you can open and change multiple images very quickly.
Submitted by Solomon Kahsai on Wed, 12/10/2014 - 09:53

DB Export in Wordpress returns Empty file.

I have several tile to export DataBase from Wordpress site over phpmyadmin, and sometimes it would export, but more often it returns empty file. What can be the problem? This is very important to have backup of your site, and to be sure it is not empty file.
Submitted by Boris Hrkic on Tue, 12/09/2014 - 23:26

Create OLAP Cube in SQL Server Analysis Services

While leaning Data Warehouse, eventually we face to creation OLAP Cube. Every newbies who want to learn creation of OLAP Cube in SSAS (SQL Server Analysis Services) using Microsoft BIDS (Business Intelligence Development Studio) Environment and Data Warehouse face with quite difficult implementation. Most students would give up, when they surface numerous failures during installation or implementation, I was one of them.
Submitted by Boris Hrkic on Tue, 12/09/2014 - 23:06

Up-to-date Windows Installation Media

Microsoft only provides Windows 7 installation media with service pack 1 applied. After every new installation, you have to apply over 150 updates. This is very time consuming. Is there a way to integrate updates packages in the Windows installation disk?
Submitted by Bernhard Müller on Tue, 12/09/2014 - 21:35

Execute a Windows Native Command via Java

A Windows native Command like for example "netstat" or any other should be executed inside a Java Application. The Application is able to read the output that the native command is producing.
Submitted by Slobodan Grabovica on Tue, 12/09/2014 - 20:21

Make a Screenshot and Send an Email with Java Application

Sending an email with Java. The Application can connect to some email provider server. The Application should be able to make screenshots and send them via email. It should be possible to create the Email-Subject, Body text, and to add Attachments.
Submitted by Slobodan Grabovica on Tue, 12/09/2014 - 20:12

Access Webcam with HTML5

Access Computers webcam with HTML5 and show the Stream inside a Browser. The shown Webcam stream should be inside a tag of 640x480 size.
Submitted by Slobodan Grabovica on Tue, 12/09/2014 - 20:02

Firefox can not be open after you install it on MaC

After you download and install Firefox on your Mac you may see the error message, "Firefox.app" . What to do ?
Submitted by Martina Naumovska on Tue, 12/09/2014 - 19:20

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