This paper examines small-world phenomena in communications systems focusing specifically on three networks each operating in different geographical spheres. The first is the logical IP (Internet Protocol) fibre optic infrastructure that connects major metropolitan areas in the United States...

This paper addresses the issue of technogenesis and its geographical pattern. It aims to offer both a general analysis framework and a test on innovation data from several European cities. This framework is mainly built on the product life-cycle and the incubation approach. On the basis of this...