Social embeddedness appears to be a promising way to analyze knowledge collaborations, notably to better understand their build up and their spatial patterns. Nevertheless, measurement problems and an over-territorialized conception of the notion exist. When studying the formation of these...

This paper explores the use of Internet, including social networks, e-government services and e-commerce from the perspective of the digital divide. First, it aims to find out what factors explain the digital divide, considered as a multidimensional concept. Second, the article aims to identify...

We develop a general framework to study contests, containing the well-known models of Tullock (1980) and Lazear & Rosen (1981) as special cases. The contest outcome depends on players' effort and skill, the latter being subject to symmetric uncertainty. The model is tractable, because a...