User interface design

When pictures lie

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  One of the most improvable characteristics of scientific papers is the graphical presentation of numerical data. It is sad to see that thirty years after Tufte published the first edition of his masterpiece [1] many authors are still including grossly inaccurate graphics. Sadder still when the authors are professional graphists, who should know better. … Read more




Adult entertainment

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  I should occasionally present examples of the strange reasons people sometimes invoke for not using Eiffel. In an earlier article [1] I gave the basic idea common to all these reasons, but there are many variants, in the general style “I am responsible for IT policy and purchases for IBM, the US Department of … Read more




Ado About The Resource That Was (Not)

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The resources we have at our disposal on a computing system may be huge, but they are always finite, and our programs’ appetite for resources will eventually exhaust them. At that stage, we have to deal with the SBYBAW rule, which sounds like a tautology but is an encouragement to look for clever algorithms: techniques for freeing resources when no resources remain may not request new resources.







Specifying user interfaces

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Many blogs including this one rely on the WordPress software. In previous states of the present page you may have noticed a small WordPress bug, which I find interesting. “Tags” are a nifty WordPress feature. When you post a message, you can specify one or more informative “tags”. The tags of all messages appear in the right sidebar, … Read more




The good and the ugly

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Once in a while one hits a tool that is just right. An example worth publicizing is the EasyChair system for conference management [1], which  — after a first experience as reviewer —  I have selected whenever I was in a position to make the choice for a new conference in recent years. At first … Read more