The development of inventor networks is characterized by the addition of a significant number of new inventors, while a considerable number of incumbent inventors discontinue. We estimate the persistence of knowledge in regional inventor networks using alternative assumptions about knowledge...

We investigate the stability of cooperative relationships between inventors and consequences for the characteristics and patent productivity of the respective regional innovation systems (RIS). The empirical analysis is for nine German regions over a period of 15 years. We find a rather high...

We investigate the persistence of levels of self-employment and new business formation in different time periods and under different framework conditions. The analysis shows that high levels of regional self-employment and new business formation tend to be persistent for periods as long as 80...

Being a "jack-of-all-trades" increases the probability of running an entrepreneurial venture successfully; but what happens to "jack-of-few-trades" who lack sufficient skills? This paper investigates a possible compensation mechanism between balanced skills and cities, and how this compensatory...

We use the historical self-employment rate as an indicator of a regional culture of entrepreneurship and link this measure to economic growth in recent periods. The results indicate that German regions with a high level of entrepreneurship in the mid- 1920s have higher start-up rates about 80...

This paper summarizes the role of entrepreneurship in the East German transformation process that followed the breakdown of the socialist regime and subsequent unification with West Germany. The main aim of this exercise is to derive conclusions and recommendations for a potential unification of...

We explore the role of different types of self-employment for a persistence of the regional level of entrepreneurship over time. Our analysis for West German regions shows relatively strong effects for the historical self- employment rate in the non-agricultural sector, particularly in...

Emerging literature shows that spatial differences in entrepreneurship tend to persist over longer periods of time. A potential mechanism underlying this pronounced persistence is that high levels of start-up activity lead to the emergence of a regional culture and a supporting environment in...

We investigate the persistence of levels of self-employment and new business formation in different time periods and under different framework conditions. The analysis shows that high levels of regional self-employment and new business formation tend to be persistent for periods as long as 80...

The 40 years of socialist regime in East Germany were characterized by a massive anti-entrepreneurship policy. We investigate the reemergence of entrepreneurship in East Germany during its transformation to a market economy following the collapse of the East German state in 1989. It took about...