We analyze the Celebrity 100 annual list of the world’s most “powerful celebrities” compiled and published by Forbes Magazine. The lists provide an interesting collection of people, that includes their earnings, and the perception of citizens concerning the attributes that made them become...

This paper develops a consistent bootstrap estimation procedure to obtain confidence intervals for nonparametric measures of productive efficiency. Although the methodology is illustrated in terms of technical efficiency measured by output distance functions, the technique can be easily extented...

A separation heuristic for mixed integer programs is presented that theoretically allows one to derive several families of " strong" valid inequalities for specific models and compuationally gives results as good as or better than those obtained from several existing separation routines...

We investigate an economic geography model in which agricultural goods are costly to transport and in which manufactures hire labor from the local agricultural sector as unskilled labor. We show that agricultural transport costs and local-unskilled labor requirements in firms act as a dispersion...

This paper investigates the impact of the heterogeneity of the labor force on the spatial distribution of activities. This goal is achieved by applying the tools of discrete choice theory to an economic geography model. We show that taste heterogeneity acts as a strong dispersion force. We also...

In a simple urban economics framework, we aim at highlighting how the trade-off between optimal and equilibrium city size behaves when introducing dynamic human capital externalities beside the classical congestion externalities. Our purpose is to show that there are dynamic gains from oversized...

Since Collier and Hoeffler (1998, 2004), it has been supported that inequality, measured at national level, does not affect the risk of conflict. Based on a renewed theoretical framework, the purpose of the paper is to explore the role of inequality in localized conflicts. We argue that previous...

We investigate the role that climatic change has played in the pattern of urbanization in sub- Saharan African countries compared to the rest of the developing world. To this end we assemble a cross-country panel data set that allows us to estimate the determinants of urbanization. The results...