The German National Library of Science and Technology (TIB) is developing an innovative AV-Portal which allows web-based access to scientific films. Therefore the TIB would like to transfer existing methods of visual search, visualisation and automatic content analysis into the field of digital libraries. In order to ensure optimum usability of the AV-Portal, the development has been accompanie...

Streets have long been designed to maximize motor vehicle throughput, ignoring other street users. Many cities are now reversing this trend and implementing policies design more equitable streets. However, few existing tools metrics enable widescale assessment, evaluation, longitudinal tracking of these space rebalancing efforts, i.e., assessing how the current is, it can be improved, much prog...

User participation seems especially important in the development of collaborative work systems where the technology is used by a work group to coordinate their joint activities. Users rather than systems analysts are often the best source of information on how they will use information tec nology to collaborate. It is almost an axiom of systems development that end users should participate in a...