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Keyword: offbeat

ZuuL - Development Visualization with Gource

2012-03-13, Dept. of Computer Science, University of Hamburg

ZuuL - Development Visualization with Gource

This video visualizes the development process of our ZuuL game created for the Softwareentwicklungspraktikum at the University of Hamburg in 2009. The SVN log files were processed using Gource and the result was recorded.

Music: Approaching Nirvana - Will Rain

UHH Anti-Logos


UHH Anti-Logos

The University of Hamburg has an official logo that may only be used in compliance with certain guidelines. Notably, (according to the Bureau for Communication and Public Relations, as of February 2010) it may not be used in documents which are published under free licenses (e.g. Creative Commons).

In some document templates, there exists a special place for the logo or it might even be included by default, and its omission would result in an ugly gap. In cases where a total omission of the logo is not desirable (whatever the reason), you could instead use one of these "anti-logos", satirical replacements for the original logo. They're visually similiar to the official logo, but are distinct enough to be immediately recognizable as satire.

I do not use these logos myself, they were created to accompany a talk about OpenAccess and were made (not accidentally) to appear humorous.

Badly Written Spambots – an Anecdote

2011-12-01, Dept. of Computer Science, University of Hamburg

Badly Written Spambots – an Anecdote

This Lightning Talk was held in the KunterBuntesSeminar organized by Computer Science students in Hamburg, it was the second one of the session and partly referenced the talk I held directly beforehand.

I explained how I managed to find out from my analytics data how to identify a spam bot that was badly implemented in such a way that it violated important web standards, thus triggering errors. By being stupid, the author of the spam bot relieved me of quite a bit of diagnosis-related work.

Making Of "Software-Wiederverwendung"

2011-11-29, Dept. of Computer Science, University of Hamburg

Making Of "Software-Wiederverwendung"

This is a timelapse recording of me creating the slides for my talk about software reuse, based on chapter 16 of Ian Sommerville's popular book "Software Engineering". Five to six hours of screen recording have been condensed to five minutes for this video.

Tools used: LaTeX, Kile, Inkscape, yEd (shortly), Firefox, evince and probably more. Running Ubuntu Linux 11.10.

Music: Approaching Nirvana with Bangers & Smashed, available on Bandcamp or iTunes.

Software that I end up avoiding

2011-04-10 20:01:08

Having recently acquired a brand-new smartphone, I'm still fiddling around with the system, installing apps and configuring things. So far I'm really happy with it, a definite step up from my previous cell phone (and that one wasn't even that old).

Imagine my surprise when I found out that the new one has an office app installed on it by the vendor. Inspired by a semi-recent article on OSNews, I'd been wondering what a good mobile office UI might look like, so I was eager to have a look at this one that came free with my phone. It's called ThinkFree Office and supposedly it works really well. Unfortunately I never actually could look at it. How come? Because the EULA is completely friggin' ridiculous. And here's why.

Spielerei mit Streifenbildern

2010-10-10 15:57:43

Heute gibt's mal wieder etwas völlig anderes. Ich möchte euch eine Idee zeigen, mit der ich vor einiger Zeit mal herumexperimentiert habe, die mit der Wahrnehmung von teilweise verdeckten Bildern zu tun hat. Die Idee stammt aus einem Video, das ich vor langer Zeit mal gesehen habe. Dort hat jemand diesen Effekt mit schwarzen Silhouetten erzeugt. An dieser Stelle bin ich mutig und versuche es direkt mit einem Farbbild, allerdings einem einfachen. Hier ist eine Spirale:

Eine rot-weiße Spirale

Ubuntu bug #248619

2010-06-15, Dept. of Computer Science, University of Hamburg

Ubuntu bug #248619

This is a lightning talk (five minutes in duration) that was held at the KunterBuntesSeminar in the summer of 2010.

I introduced the symptoms of famed ubuntu launchpad bug #248619 and its duplicates and examined the cause of the problem.


2010-03-30 23:23:24

If you have previously read about esoteric programming languages, you may already be familiar with Piet. In case you haven't: Piet is a programming language in which program flow is specified in a graphical format.

In a nutshell: The focus moves between continuous blobs of pixels of the same color, the "cursor" starts off pointed to the right but may be rotated, colors correspond to opcodes (arithmetic, stack manipulation, I/O) while the number of pixels in one continuous area denotes that same integer.

A quine program with a twist

2010-03-26 11:35:08

From Wikipedia:

In computing, a quine is a computer program which produces a copy of its own source code as its only output.

Quines like that are known to exist in every Turing complete language. Examples can be found in the Wikipedia article linked above and elsewhere on the net.

Then there are the programmers who are not satisfied with just regular exceptionality.

Voxel based Mandelbulb in POV-Ray


Voxel based Mandelbulb in POV-Ray

This is a POV-Ray rendering of a 1024x1024x1024 voxel computation of the standard 8th power mandelbulb, as seen at Skytopia.

Rendered in 640x480, 24 FPS, using a combination of ray tracing (using two light sources) and radiosity.

Aesthetically, this doesn't really surpass existing videos. The fractal structure is not immediately apparent due to the relatively low voxel resolution. For me, this was more of an "I must climb it because it is there" idea. ;)

To see a way better, truly breathtaking mandelbulb rendering, see the work of Iñigo Quílez. Also, check out how Cyril Crassin does this in real time (!) using CUDA.