[fre] Rationalisation de l'offre de soins en chirurgie. Réduction des surcapacités et réallocation sectorielle. . Dans cette étude, nous tentons d'apporter un éclairage quantitatif au débat sur la réorganisation de l'offre de soins chirurgicaux. Nous recourons à un modèle de...

In the context of approximately 50% reduction in pesticide treatment according to the agreement of the "Grenelle de l'environnement" in France, the main part of this study involves the assessment of intensification or extensification of pesticide use in crop activities. This is done with...

Policy makers as well as land users in developed countries are willing to promote new agricultural practices that are more environmentally friendly. This can be possible notably among several others by reducing chemical utilization. For instance in France, the agreement of the “Grenelle de...

The model used, GAMEDE, is a “whole-farm” dynamic model composed of 6 biophysical modules and a management system (Vayssières et al, 2009). This simulation model gives accurate predictions for various sustainability indicators (labor, energy consumption, production, nitrogen leaks to the...

A rather simple but crucial question in economics and management is why one firm makes more profit than another. However the answer remains unclear because of the large range of factors that might explain differential profit. In this paper we propose a decomposition of the profit differential...