This note generalizes analytical relationships among activity variables of DEA models previously derived by Boussemart, Briec and Leleu (2007). We relax the asumption of constant returns to scale by showing that the key results hold under a weaker asumption of homogeneity. We use the notion of...

The duality between measures of economic and technical efficiency has been extensively studied in the productive efficiency analysis. This duality ensures a meaningful interpretation of technical efficiency as economic efficiency evaluated at the most favorable shadow prices. This paper...

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...

In a recent paper Kuosmanen and Matin (2011) have developed a dual formulation of the weakly disposable Kuosmanen’s technology (Kuosmanen, 2005). Their work sheds new light on the economic interpretation of weak disposability and allows estimation of shadow prices for undesirable/bad outputs....