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.

Efficiently use font icons on web pages

In order to have a webpage with content other than text, it should also be possible to add icons that are stored as a font file. A web designer and content provider would like to use them as vector graphics so that quality is not lost when zooming/printing a document. In order to do that they need a way to reference a single icon and be able to manipulate it as a DOM object (e.g. hide, change style, animate,...). Important restriction is that all icons should stay in one file, which requires user to make only one request to the server (to download a single file).

Automatically start and log into VPN on Windows Startup

To connect to a VPN with Windows, after you have acquired VPN access (either commercially or a free one) you generally might want to use it/log into it. This means every time the VPN should be used a login into some third-party software or some handling of the Windows integrated software is necessary (i.e. choosing connection, inputting username/password). This challenge is to present a solution so that the computer automatically does this process for you on startup.

Installing an image from a PC with ide drivers to a PC with (only) ahci drivers available

To save time with installing several programms an image was made form an old PC. That PC was using ide drivers for the harddrive. The problem was, that on the new machine, only ahci mode was available in BIOS, so that there was no possibility to boot. In normal cases you would change the entry in the registry before changing the BIOS Settings from ide to ahci.

Installing VMWare vSphere Hypervisor on Server with additional RAID Controller

The first step was to configure the RAID on RAID 1 level, then the ESXi iso had to be installed on the Harddrive. The problem was, that the standard iso of VMWare vShpere Hypervisor does not include the required drivers for the RAID controller, and because the controller was fresh on the market, there was no custom iso available for this controller at that point of time.

See changes that were made by user in latex document

The core problem is to compare two latex generated documents and highlight differences between them. The important part here is that a simple *.tex document may have dependencies to other documents or included .tex files (i.e. each chapter/section may be stored as a separate file). Therefore, one needs to find a way to first combine and build both projects (i.e. produce output), then compare them and then produce a single pdf file that highlights differences.

Imbalanced dataset classification performs poorly

Imbalanced datasets can have tremendeous negative impact on training a classification model. Is there a way in Azure ML to deal with these kind of challenge?

Starting multiple docker containers and let them communicate

When developing microservice-like architectures it is reasonable to assume that docker is used for deploying the individual services. In order to test if the services worke together properly, especially on a small scale, on can start a docker container for each service. Since each of the services gets its own network stack created by docker, they can by default not communicate with each other. It would be nice to have the possiblity to simply start all services at once and give them the possibility to communicate with each other using the hostnames of the services.

Windows 10 Start menue disappeared

In Windows 10, after starting the PC, the start menue was gone, nothing happened when clicking the windows sign in the bottom left corner. No reboot helped.

Dehaze module not visible in Lightroom 6

Having the latest pc version of Lightroom 6 installed and updated it to 6.6, the announced "Dehaze module" cannot be found. Since this is a popular way to improve photos with a lot of haze in it some way to integrate this function would be great.

Create (partial) backup of local MongoDB database

If one is developing some web application that uses a MongoDB database and wants to demonstrate the application, one might need some exemplary test data. This data needs to be created beforehand and it might be necessary to whipe the database between the creation of the test data and the demo.


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