[eng] We analyze the effects of measures taken in favour of youth on the duration oftheir stay in the firm and on their professionnal trajectories at the end of their employment spell. We estimate models of job employment and of job search, in order to test the effective­ness of Youth training...

[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...

Summary The increasing demand for real-time applications (video conferencing, Internet telephony--VoIP--etc.) delivered over Internet networks requires stringent Quality of Service (QoS) guarantees. Internet traffic routing based on a Best-effort basis can hardly support these QoS requirements....

Several online marketplaces, like eBay provide their users with reputation management mechanisms (evaluations, ratings,...). This article aims at investigating the impact of these reputation mechanisms on trust building and market efficiency, through a set of experiments based on the trust game...

This paper aims to understand how Internet users may improve their social capital by investing in online social activities. We argue that the Internet can be a convenient and efficient means of maintaining existing social ties and/or of creating new ties. We seek to identify the determinants of...

This paper reports the results of a laboratory experiment that aims at investigating the effect of manipulating reputation in the context of online decentralized feedback systems, such as eBay. Our experimental results indicate that the agents do not hesitate to manipulate their reputation even...

As people are spending more time online, it is important to evaluate the impact of Internet use on individual well-being. Internet use yields direct utility and economic returns (e.g. better job, higher productivity) that may increase life satisfaction. But the Internet might also have...

This article aims to examine how the size of file-sharing communities affects their functioning and performance (i.e. their capacity to share content). Olson (1965) argued that small communities are more able to provide collective goods. Using an original database on BitTorrent file-sharing...

The paper proposes an analytical framework for comparing different business models for producing information goods and digital services. It is based on three dimensions that also refer to contrasted literature: the economics of matching, the economics of assembling and the economics of knowledge...