This paper is an attempt to clarify recent trends in the distribution of knowledge intensive services (KIS) in Europe, which have emerged during the last decade as key agents for sustaining local and regional competitiveness. Firstly, particular attention is paid to the definition, the...

The underlying hypothesis of our research is that of a permanence of the metropolization and segregation trends in populations and activities, especially through the emergence of peripheral polarities situated along main transport axes. The different works carried out in Costa-Rica, France and...

Following the model-based approach of Ellison and Glaeser (1997), we develop a framework to test for the link between concentration, spatial clustering and the size of plants. Concentration is an a-spatial concept of variability that can be measured with the standard locational Gini or the more...

The share of skilled workers in urban populations has steadily increased since 1970 in US metropolitan areas, but more in some cities than in others. A higher concentration of skills is a sought after asset for cities as it affects population growth positively, also when the initial share is...

Starting from the standard analysis of accident theory, this paper shows that determining the first-best level of care of ultra-hazardous activities also involves determining the best industrial structure. The analysis assesses the impact of the civil nuclear liability on the organization of...