Data Envelopment Analysis (D.E.A.) has been widely studied in the literature since its inception in 1978. The methodology behind the classical D.E.A., the oriented method, is to hold inputs (outputs) constant and to determine how much of an improvement in the output (input) dimensions is...

The recent global recession has revealed the vital importance of service-sector productivity in all developed economies. The challenge for scholars and professionals in productivity management (economics and management science) in the coming decade is clearly to improve the productivity of the...

A New Look at Spatially Competitive Facility Location Models -- A Spatial Nash Equilibrium Model -- Investigating the Use of the Core as a Solution Concept in Spatial Price Equilibrium Games -- Computational Aspects of the International Coal Trade Model -- Demand Homotopies for Computing...