We develop a model of competition in prices and infrastructure among mobile network operators. Consolidation can increase market power, but economies of scale, which we derive from physical principles, lead to more efficient data transmission. Estimating our model with French consumer and...

This work empirically evaluates the level of technical efficiency of Brazilian banks considering the volume of non-performing loans (NPLs) and their determinants. We made this in a two-stage analysis. In the first stage, the results suggest that for the type of ownership, foreign banks were more...

I define constrained efficient direct mechanisms as those that are not Pareto dominated within the set of direct mechanisms that satisfy some given feasibility constraints – incentive compatibility and other constraints. I show a standard equivalence with maximization of a social welfare...

This research presents a novel approach for effectively addressing the multi-response problem in the Taguchi Method, a pervasive issue in the production process and productivity index improvement efforts. We achieved this by integrating the Taguchi Method with DEA, transforming experimental...

Organic farming is one of the methods that increases the value added of agricultural products in a sustainable way. This paper examines how the adoption of organic farming has impacted the technical efficiency of Palestinian olive-growing farms in the West Bank. Using cross-sectional data of...