Taking into account both competence and governance issues, and six dimensions of tie strength, this article argues that in networks for exploration there are good reasons, counter to the thesis of the 'strength of weak ties', for a dense structure of ties that are strong in most dimensions.By...

This chapter offers a theory and an analytical framework for the analysis of cluster dynamics, i.e. the innovative performance and evolution of clusters.It develops three types of embedding: institutional embedding, structural embedding (network structure), and relational embedding (type and...

This survey reviews the growing body of academic work on venture capital. It lays out the major data sources used. It examines the work on venture capital investments in companies, looking at issues of selection, contracting, post-investment services and exits. The survey considers recent work...

This article provides empirical tests of the hypothesis of optimal cognitive distance , proposed by Nooteboom (1999, 2000), in two distinct empirical settings.Variety of cognition, needed for learning, has two dimensions: the number of agents with different cognition, and differences in...

Abstract We analyze a dynamic game between a buyer and a seller of an exhaustible resource. The seller chooses resource supply; the buyer can pay a fixed cost to invent a perfect substitute for the resource at any time. In closed-loop equilibrium, the buyer adopts the substitute when the...