: In feature modelling, constraints can be used to store design intent in a model. Interaction constraints are an important type of constraints, which limit the extent to which fea...
This paper reports a usability evaluation of three operational digital libraries (DLs): the ACM DL, the IEEE Computer Society DL, and the IEEE Xplore DL. An experiment was conduct...
We show how to design touchscreen widgets that respond to a finger’s contact area. In standard touchscreen systems a finger often appears to touch several screen objects, but ...
This study investigates how the psychological notion of affordance, known from human computer interface design, can be adopted for the analysis and design of communication of a use...
Unlike non-time-critical applications like email and file transfer, network games demand timely data delivery to maintain the seemingly interactive presence of players in the vir...