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...

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...

Relatively little attention has been paid to the role that externalities play in determining the pecuniary returns to migration. This paper addresses this gap, using microeconomic data for more than 100,000 individuals living in the European Union (EU) for the period 1994-2001 in order to...