Version control systems are widely used asynchronous collaborative systems in team-working environments, where document merging is a key function. However most existing systems only support limited semantic merging, and techniques for supporting semantic merging are strictly bound up with the merging algorithms that do syntactic merging. In this paper, we propose a flexible merging framework in...

This paper focuses on the interaction patterns of learners studying in pairs who were provided with multimedia learning material. In a previous article, we reported that learning scores were higher for dyads of an ‘animations’ condition than for dyads of a ‘static pictures’ condition. Results also showed that offering a persistent display of one snapshot of each animated sequence hindered colla...

In this article we present the use of knowledge for a Mediation System, developed to give support to participants in mechanical-system-designer activities. To use a cooperative system sufficient assistance is needed to facilitate and coordinate actors’ activities. To accomplish this goal we introduce an artificial actor: Mediator. The Mediator forms part of the group of collaborative, with the ...

There are a variety of diierent CSCW applications for group collaboration. Among others, systems for asynchronous coordination as well as synchronous multiuser editors are current research topics. Each system has its advantages. Thus, combining the advantages of such systems should be even more advantageous. We have developed a new object-oriented, asynchronous activity support system, called T...

Consider a small group of mobile agents whose goal is to locate a certain cell in a two-dimensional infinite grid. The agents operate in an asynchronous environment, where in each discrete time step, an arbitrary subset of the agents execute one atomic look-compute-move cycle. The protocol controlling each agent is determined by a (possibly distinct) finite automaton. The only means of communic...