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.

Customizing facebook apperance and functionality

Facebook is changing the appearance and functionality of its application in constant intervals. Furthermore the company tries to provide a service which is best for the majority of users and the business interests of the company. Therefor a single user needs to make a lot of compromisses using facebook. It is possible to adjust the appearance and functionality of facebook using browser plugins.
Submitted by Benjamin Bachhuber on Wed, 11/28/2012 - 16:55

Deploying a Ruby on Rails application to the heroku cloud

Once a developer has deployed a Ruby on Rails application to the version control git he might want to know how to use this application in production. One solution is to use a cloud service provider like heroku and to deploy the application there.
Submitted by Benjamin Bachhuber on Wed, 11/28/2012 - 16:24

WEKA Crash after exceeding the avaiable Memory

In the lecture "Machine Learning" I have to process different kinds of datasets and perform several machine learning techniques on them. A few classifier like tree-based ones work very good on small datasets with less attributes but doesn't on big datasets with lots of attributes. In the worst case, WEKA crashes because it exceeds its reserved memory space.
Submitted by Simon Steyskal on Wed, 11/28/2012 - 15:23

Content crawling - Amazon

What I need to think about, when I am programming an application, which will download the content from Amazon and store it in a database. I have a program, which has his own web crawler for downloading web content. The problem is that this program cannot recognize the important parto of every webpage and we need to somehow help with important part recognition. This issue is important to solve for Amazon webpage.
Submitted by Martin Onco on Wed, 11/28/2012 - 12:48

Online Photoshop

I am preparing presentation on one computer in my university and I need to edit one picture. I need very advance edit and all basic pre-installed programs are not able to help me. I decide to install one of the advanced picture editing tool, but it is not possible to install any programs on this computer. It is by admin forbidden.
Submitted by Martin Onco on Wed, 11/28/2012 - 11:01

Fixing the Import Problem in Mule ESB

If you are programming with the MuleESB suite you are may be forced with the problem, that it is not able to find imports or throws "ClassNotFoundExceptions" after trying to compile your source code. Even after checking the class/build path and adding every jar to them, the problem still exists.
Submitted by Simon Steyskal on Wed, 11/28/2012 - 06:38

Changing tab names in Chrome

Using a browser with a great amount of different tabs, it can be useful to change tab names on websites that don't have meaningful title names.
Submitted by Xiashuo Lin on Tue, 11/27/2012 - 12:32

Customized web fonts

In the past, if the embedding of customized fonts was required, it would result into the use of images that would display the desired words. Nowadays customized fonts can be rendered dynamically by the browser using different technologies.
Submitted by Xiashuo Lin on Tue, 11/27/2012 - 11:32

Creating a web audio player with GWT

Google Web Toolkit (GWT) is a set of tools that allows for creating JavaScript applications in Java. For a web application I was working on with GWT, I had to create an audiovisualization unit. For that purpose it was necessary to implement an audio player that would play/pause/resume/stop a sound file by request.
Submitted by Xiashuo Lin on Tue, 11/27/2012 - 09:36

Crack WEP

WEP, the Wired Equivalent Privacy, protocol for wireless networks, is known to be insecure and can be cracked within minutes.
Submitted by Marius Moldovan on Tue, 11/27/2012 - 02:35

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