easily modelled. In this thesis a novel compositional approach to performance modelling is presented. This approach is based on a suitably enhanced process algebra, PEPA (Performance Evaluation Process Algebra). The compositional nature of the language provides benefits for model solution as well

Currently computers are changing from single isolated devices to entry points into a world wide network of information exchange and business transactions called the World Wide Web (WWW). Therefore support in the exchange of data, information, and knowledge exchange is becoming the key issue in current computer technology. Ontologies provide a shared and common understanding of a domain that can be communicated between people and application systems. Therefore, they may play a major role in supporting information exchange processes in various areas. This book discusses the role ontologies will play in knowledge management and in electronic commerce. In addition, I show how arising web standards such as RDF and XML can be used as

this document, text or image about?' Gradually moving from the left to the right in Figure 3.1, different understandings of this concept evolve

This document (ns Notes and Documentation) provides reference documentation for ns. Although we begin with a simple simulation script, resources like Marc Greis's tutorial web pages (at http://titan.cs.uni-bonn.de/~greis/ns/ ns.html) or the slides from one of the ns tutorials are problably better places to begin for the ns novice.

Introduction Our paper presents a model for supporting group interaction in large-scale virtual worlds 1 . The model provides generic techniques for managing interactions between various objects in such environments including humans and computer artefacts. Furthermore, the model is intended

and not necessarily of their institutions. 2

on paper than on the computer. While a narrative model of programming can interfere with the creation of non-linear simulation-oriented programs, a classroom study showed that the children were able to use a narrative perspective on programming to create story-based games with interactive agents. Thus

C'est dans le bureau d'Elisabeth Szuyska, de réparties mi-plaisantes mi-sérieuses, que le nom de CONDOR survint. Elisabeth fut ainsi associée à la naissance même du séminaire, auquel elle participa activement à ses débuts. Elle préparait chaque année l'édition des Actes, rappelant à

reality systems which explicitly support co-operative work (although we argue that the results of our exploration may also be applied to other kinds of collaborative system). The main part of the paper identifies a list of embodiment design issues including: presence, location, identity, activity

Abstract not found