[fre] L'ouverture des réseaux à la concurrence s'est traduite par une mise en pièces de l'offre de services afférents. Parallèlement, elle a conduit les opérateurs à adopter des comportements stratégiques autour de l'interconnexion de leurs réseaux. Cet article se propose de rendre...

[fre] Sur Internet, les interactions entre utilisateurs ou nœuds de réseau prennent le plus souvent la forme de requêtes. Ainsi, les forums et les communautés virtuelles, mais aussi les réseaux physiques, qui supportent Internet, fonctionnent sur la base de requêtes. À partir de cette...

Interactions between Internet users or network nodes mostly consist of requests. Thus, virtual communities and newsgroup, but also data transmission through Internet networks, rest on systems of bilateral or multilateral requests. This representation of Internet allows us to study the best...

In this paper we try to present the main trends of evolution of the ICT sector. Its dynamics, supported by a constant technical progress in ICs, compounded with “non convexities” such as network effects and high sunk costs, may either lead to a Schumpeter Mark I or Schumpeter Mark II...

In order to increase the use of information and communication technologies (ICT) in the European Union Member States, the European Commission, on the initiative of Commissioner E. Liikannen, launched in December 1999 a bold programme called “eEurope”. Soon after its creation, the eEurope...

The European Community as a social configuration, with its complex division of competencies and action capacities between EC institutions and national governments, is still difficult to conceptualize. In this context the authors propose the concept of corporate actor networks in order to...

This paper develops a model of oligopolistic price competition to analyze the impact of online intermediaries such as Autobytel.com on the price setting process in the automobile market. The roles of dealer search costs, the fraction of buyers using the intermediary, the value of the item being...

For many applications, open source software (OSS) can offer a high-quality alternative to proprietary software (e.g. Linux, Apache, Android,...). But even if OSS is usually free of charge, its installation and use require some skills. Should the government intervene to promote the diffusion of...