Frenken K., Van Oort F. and Verburg T. (2007) Related variety, unrelated variety and regional economic growth, Regional Studies 41, 685-697. In economic theory, one can distinguish between variety as a source of regional knowledge spillovers, called Jacobs externalities, and variety as a...

We explain employment growth in 40 Dutch regions for the period 1996-2002. Our main interest is to test the effect of sectoral variety using data on five-digit sector employment, while controlling for traditional variables. Our measure of variety is entropy, as this measure allows for...

The geography of innovation has established itself as a central subject in economic geography. Geographical proximity to firms and organizations like universities is supposed to have a positive effect on a firms’ innovative performance. One of the reasons causing these positive...

Business-to-consumer (b2c) e-commerce can be regarded as a disruptive process innovation that can make existing business models obsolete. B2c e-commerce provides retailers the possibility of a new service concept, new client interface and even delivery system. The history of retailing is replete...

We explain employment growth in 40 Dutch regions for the period 1996-2002. Our main interest is to test the effect of sectoral variety using data on five-digit sector employment, while controlling for traditional variables. Our measure of variety is entropy, as this measure allows for...