This paper develops a model of spatial competition nesting the classical Zhang and Sexton (2001) duopsony and spatial monopsony in order to evaluate the effects of alternative stover market structures on stover prices, supply of biofuels, and firm profits. We show theoretically, as well as in an...

This study explores the role of rate and biases of technological change in the sustainability of an economy with an exhaustible resource. In order to achieve this goal, the mathematical concept of viability kernel is introduced as a sustainability indicator and necessary conditions for...

We extend data envelopment analysis (DEA) to decompose the economic efficiency of a sample of ethanol plants into internal (technical and allocative) and boundary (marketing) sources. This decomposition allows us to evaluate the channels through which different plant characteristics affect plant...

Replaced with revised version of paper 07/29/09.

In this study we use data envelopment analysis to decompose the overall economicefficiency of a sample of ethanol plants into three subcomponents: technical efficiency, allocative efficiency and a new component we call marketing efficiency. The relative importance of these sources of efficiency...

Replaced with revised version of paper 07/24/09.