In this tutorial we present some basic ideas behind the notion of Small World. We review the state-of-the-art in the field, and put emphasis on some recent developments, in connection with analyzing the structure of the Web.

This paper investigates the relationships between firm organization attributes, namely a structure á la Chandler, and their inward looking or exploitationʺ attitude in R&D and innovation. We argue that because of sunk costs and learning processes an inward looking behavior is a consequence of...