Unemployment rates vary widely at the sub-regional level. We seek to explain why such variation occurs, using data for 174 districts in the Midi-Pyrenees region of France for 1990-91. A set of explanatory variables is derived from theory and the voluminous literature.

The infinite source Poisson model is a fluid queue approximation of network data transmission that assumes that sources begin constant rate transmissions of data at Poisson time points for random lengths of time. This model has been a popular one as analysts attempt to provide explantations for...

We propose a simple model of competition for the production of energy between a thermal station and an hydrostation. We show analytically and geometrically that, despite its static characteristics, the output from the thermal station is determined by the intertemporal specifications of costs and...

Cet article traite des relaions entre un principal, quie veut se procurer un bien, et les deux agents impliques dans le processus de production de ce bien. Les couts des agents constituent une information privee. Le principal confie la production du bien fini a l'un des agents, qui en...

This paper shows that a regulator should be careful when regulating a final product which industry is characterized by an unregulated essential facility sold through non-linear tariffs. Two regulatory environments are considered: the Laffont-Tirole framework with exogenous public funds and the...