security and usability: message encryption

Recently I began to do a bit of research on security and usability in order to make it a little project for students to work on. I was well aware that the most secure system is not effective if people can't use it and that security (lets say: a very …

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from research to requirements: user need tables

There is a lot written about qualitative user studies but in my eyes there is few material out there which helps a practitioner to apply the methods. Even the more practical works depend on a large team and lots of time and resources. So the interested designer or researcher may …

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confusing: line charts for values in categories

Reading papers and reports I often see diagrams that are used to visualize values of different categories – e.g. the average hours spend for university-work per week of students of different subjects. It seems rather intuitive for me to use a bar chart: One category (e.g. subject), one value …

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Usability improvements unleashed...

Easing the interaction by using visual interface elements instead of a syntax that needs to be learned and remembered is a fairly common principle ("recognition rather than recall") It is a major step forward if the interface is (hopefully) self-explanatory instead of having to read the ***** manual – first for learning …

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Teaching Material Usability Tests

Testing Interview Analysis

As I found out in the research on last term's class, some things were easy and enjoyed by the students, while some were difficult, like analysing interviews. So I tried out way I explain interview analysis : I recorded a short interview and let people analyse it after …

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Qualitative Meta-Research for Education

During the last months I was designing a class for Human Centered Design. I try to practice what I preach, so the class is designed with human centered methods itself. (Pretty meta, hmm?)

So I started the project by doing  interviews with students of a former HCD class. As well …

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Eric Reiss' Web Dogma – deutsche Übersetzung

Eric Reiss' Web Dogma besteht aus zehn Regeln für Webdesign – mit dem Anspruch unabhängig von Moden und technologischen Weiterentwicklungen zu sein. Ich habe die englische Fassung ins Deutsche übersetzt.

  1. Alles, was lediglich existiert, um die interne Politik des Seiteneigners zu erfüllen, muss eliminiert werden
  2. Alles, was lediglich existiert um das …
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canvas and no brush

Imagine you are a painter and a salesman tells you that you should get rid of your tools in order to have more space in your studio. "Your workspace is not cluttered by all the other things like brushes and colors. What matters is the painting, not the tools!"

This …

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