dental care, (ii) productivity, technical efficiency and economies of scale in dental care production, and finally (iii …

A rich literature on the analysis of efficiency in production has developed since pioneering work of Tjalling Koopmans … some shape constraints, in multiple dimensions. New results that enable inference about mean efficiency as well as tests of … convexity, returns to scale, differences in mean efficiency and the separability condition described by Simar and Wilson …

In productivity and efficiency analysis, the technical efficiency of a production unit is measured through its distance … viewed as additive (rather than multiplicative) measures efficiency. Directional distance functions are not restricted to non … develop consistent bootstrap procedures for statistical inference about directional distance, estimation of confidence …

evolution over time of four fundamental aspects of their productivity: i) training duration; ii) time to a first publication …; iii) productivity over the training period; and iv) collaboration with other scientists. We identified four main trends …

productivity. Within a given teamwork setting, it is not obvious how group member diversity affects the performance of the …