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.

Managing the Research Sources Manually

In the process of conducting a research, one needs to always manage the research sources. This includes collecting, organising, citing, and sharing the research sources. The process of managing the research sources is a very challenging task if it would be done manually. The researcher should extract the citation information from different resources (e.g. papers or web-pages), make lists, save pdf files, convert the citations to the right format, share them with colleagues, etc.

Internet connection error: Unable to connect to the Proxy server

Can’t connect to your internet? If you’re having problem connecting to the internet while your other devices are able to connect to the internet, chances are, your proxy setting is configured wrongly or it is switched ‘on’. Now, a proxy server is a server that acts as an intermediary between your computer and other servers. Here is a solution for Microsoft Windows XP, 7 and 8 via Internet Explorer.

Eror 138 in Google Chrome

Error 138 is an indication from Google Chrome when it is unable to access the internet for some reason. You may get a similar error string -Error code: Error 138 (net::ERR_NETWORK _ACCESS_DENIED): Unable to access the network.

Remembering LaTeX Commands

Latex is a document preparation system and markup language that has been widely used in scientific community. In order to use Latex in classical way (using a command-line), one should remember hundreds of LaTeX commands or always look in a command glossary (which wastes a lot of time).

Restricted access to WSJ articles online

The Wallstreet Journal restricts access to articles, that are visibly marked with a key. The title as well as the first few sentences of the article are visible and are then fading to white that finally leads to a gray bar that encourages it's readers to subscribe to the newspaper, or to login to their account to be able to read the full article. Whilst this problematic approach of the prestigious newspaper is understandable, the restriction of the most current articles, discourages visitors to read the paper.

Site won't show content without disabling AdBlock

As a countermeasure to disable the blocking of ads, many websites detect, if a user has installed an extension to block advertisements on their website. What follows is a prompt to either disable the use of these extensions, or to Whitelist the website in order to support all involved individuals of the creative process. Some websites even go so far as to prohibit the access to the site's content, if the AdBlock is not disabled.

Team merge coordination

To tackle this problem we created strict merging rules for our project. Every team member had to merge his branch into development and only when the first member had a running version, was the second allowed to start merging his part. Therefore we always had a running version and we saved a lot of time during development.

open source conversion

To solve the problem I had to read a lot about the implementation and the used algorithms of the current solution and then I had to find the equivalent functions in the open source framework. With knowledge about the algorithms I could develop the computer vision functions and got better results than the old solution.

Establishing of RS232 connection

To find a solution for the problem I asked a colleague to measure the output at the cable. Together we looked at the hex-commands that are sent to the generator. We found out that whenever the generator measured a certain value the connection was terminated, because this value was interpreted as an end flag by the software.

Group conversations on Skype faulty, if one member's OS is Linux

The most recent version for Skype on a Linux machine is 4.3. The age of this adaption is very apparent due to the outdated appearance of the application. Apart from its out-of-date presentation, Skype on Linux also lacks the options to video chat in a group as well as to share one's screen. This Skype version therefore exclusively offers chatting, Skype calling and video calling. However, invitations to screen shares can be accepted and viewed, even though they cannot be executed personally. The described issue occurs, if several users try to converse in a group conversation.


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