<title>Abstract</title> This paper first reflects on the concentration invariance property that regional economics implicitly assumes when the locational Gini index and the generalized entropy family of concentration indexes are used. Second, it suggests that apart from these indexes, concentration measures...

In this paper, we have developed a model that sets out to explain the existence of megacities in developing countries, in the context of a Krugman-type core-periphery model. The paper also suggests that agglomeration can be fostered by manufacturers mainly serving the domestic market. However,...

<title>Abstract</title> This contribution analyzes occupational segregation during a period of high employment in the Spanish labor market by gender and immigrant status, using several local and overall segregation measures. Using data from Spain's 2007 Economically Active Population Survey (<italic>Encuesta de...</italic>

A<sc>lonso</sc>-V<sc>illar</sc> O. and <sc>del</sc> R<sc>ío</sc> C. Concentration of economic activity: an analytical framework, <italic>Regional Studies</italic>. The goal of this paper is to offer an analytical framework within which <italic>relative</italic> concentration, including both the concentration of each sector and aggregate concentration, can be...

The aim of this paper is to study the occupational segregation of immigrants in Spain. It analyzes whether age, educational level, gender, region of origin, and years of residence in Spain affect the distribution of immigrants across occupations. In addition, given the remarkable increase of...