The Internet is growing quickly as a network of heterogeneous communication networks. The number of users is rapidly expanding and bandwidth-hungry services, such as video streaming, are becoming more and more popular by the day. However, heterogeneity and congestion cause three main problems: unpredictable throughput, losses and delays. The challenge is therefore to provide: (i) quality, even ...

The Internet is growing quickly as a network of heterogeneous communication networks. The number of users is rapidly expanding and bandwidth-hungry services, such as video streaming, are becoming more and more popular by the day. However, heterogeneity and congestion cause three main problems: unpredictable throughput, losses and delays. The challenge is therefore to provide: (i) quality, even ...

Outside the psychologist's laboratory, thinking proceeds on the basis of a great deal of interaction with artefacts that are recruited to augment problem-solving skills. The role of interactivity in problem solving was investigated using a river-crossing problem. In Experiment 1A, participants completed the same problem twice, once in a low interactivity condition, and once in a high interactiv...

In Distributed Virtual Environments, each machine equally handles the communications over the network, provides the user with a view of the world, and processes her requests. A major issue is to ensure that the network communication does not hinder the interactivity between the machine and the user. In this paper, we present a program designed to achieve this goal, based on tools rarely used in...

It is astonishing to think that a mere twenty years ago, real-time music production and performance was not only in a fledgling state with only primitive (such as the IRCAM 4X machine) or limited (like the Synclavier) capabilities, but was also the subject of very heated debate. At IRCAM in the early 1980’s, for instance, some (such as Luciano Berio) questioned whether any digital technology co...

A shared tenet of embodied, embedded, situated and distributed cognition is that people make sense of things interactively. They run a simulation, they exchange words, often taking turns to change and steer the flow of interaction; they gesture, they handle or manipulate things, they write, sketch or model. Because the concept of interaction seems intuitive, and the phenomena so pervasive, rese...

The importance of a process for a successful start of a new project team is common in business management. Warming up and cooling down exercises are already well accepted methods to activate learning groups. Improvisational theatre has become very popular during the last years as one of these activating practices. Compared to real life settings, meetings in avatar-based, 3-dimensional virtual e...