We assess the efficiency of regional innovation systems (RIS) in Germany by means of a knowledge production function. This function relates private sector research and development (R&D) activity in a region to the number of inventions that have been registered by residents of that region....

This paper forges links between a dynamic theory of markets and the reality of long term market changes. Goods are seen as being linked to the range of actions which they make possible. Thus it can be shown that the evolution of markets is closely connected with changing knowledge and property...