This paper combines the empirical finding of a functional specialization of cities with regional dynamics.We distinguish between cities dominated by headquarters and service firms (urban agglomerations), those with large stand-alone production plants in one sector (industrial agglomerations),...

This survey links the prevalent theory from the entrepreneurship literature concerning opportunity recognition and exploitation to economic theory, in particular the model of the knowledge production function. The debate and evidence regarding the relationship between innovative activity and...

This paper sheds light on the questions, Why does knowledge spill over? and How does knowledge spill over? The answer to these questions we suggest lies in the incentives confronting scientists to appropriate the expected value of their knowledge considered in the context of their path-dependent...

This paper examines the link between liquidity constraints and investment behavior for German firms of different sizes from 1970 to 1986. Results indicate that medium sized firms appear to be more liquidity constrained in their investment behavior than either the smallest or largest firms in the...