In this paper we generalize the concept of scale elasticity to accommodate changes in any direction in the input …–output space and not only in the radial input and output directions as was done so far with the conventional scale elasticity … measure. Our departure point is that we view the scale elasticity as a directional derivative measure. Then for any functional …

Schwarze’s article [2003] where ordered logit model was applied to estimate the equivalence scale elasticity. Such model … with other research for Polish data, the method applied here produces higher equivalence scale elasticity. …

, wheat, cotton, barley, and rice are shown to have positive scale elasticity, while sorghum and oats are shown to have …

scale elasticity for the water industry. The data sample is validated by applying a super-efficiency approach and a …