Over the last several years, studies of instant messaging have observed its increasing role in the workplace[1] and in social situations[2]. We propose that modifying applications...
Supporting users’ navigation is a fundamental feature of mobile guides. This paper presents an experimental evaluation comparing three different ways of providing navigation gu...
Exploration and navigation in multimedia data hierarchies (e.g., photos, music) are frequent tasks on mobile devices. However, visualization and interaction are impoverished due t...
One of the challenges with using mobile touch-screen devices is that they do not provide tactile feedback to the user. Thus, the user is required to look at the screen to interact...
This paper describes an authoring language for specifying communicative behavior and interaction of agents in virtual worlds. We focus on the popular three-dimensional (3D) multi-...
Sebastian Ullrich, Helmut Prendinger, Mitsuru Ishi...