In this paper, we compare two different representations of Framework Programs as affiliation network: "One-mode networks"' and "Two-mode networks"'. The aim of this article is to show that the choice of the representation has an impact on the analysis of the networks and on the results of the...

The heterogeneous connections model is a generalization of the homogeneous connections model of Jackson and Wolinsky (1996) in which the intrinsic value of each connection is set by a discrete, positive and symmetric function that depends solely on the types of the two end agents. Core periphery...

The question of the spatial impacts of the Information and Communication Technology (ICT) has animated the intellectual and policy debate for a long time. At the beginning of the 1990s the rise of the Internet brought a new surge of debate: it was argued that the Internet would free the economy...