In this paper the Northrhine-Westphalian metacomputing initiative is described. We start by discussing various general aspects of metacomputing and explain the reasons for founding...
We have built a system that allows users to naturally manipulate virtual 3D models with both hands on the Responsive Workbench, a tabletop VR device. Our design is largely based u...
Email is one of the most successful computer applications yet devised. Our empirical data show however, that although email was originally designed as a communications application...
A broadcast encryption scheme allows the sender to securely distribute data to a dynamically changing set of users over an insecure channel. One of the most challenging settings fo...
As multimedia becomes an integral part of collaborative systems, we must understand how to design such systems to support users’ rich set of existing interaction skills, rather ...