This paper evaluates the production activities of Japanese airports from 1987-2005 by using the directional slacks-based Inefficiency Data Envelopment Analysis model. Three measures of efficiency are estimated: the SBI-directional slacks-based inefficiency measure, the directional distance...

This chapter analyses the efficiency of African airlines using a two-stage network DEA (Data Envelopment Analysis) model. Network DEA models usually take into account the production process with intermediate inputs derived from the first stage and a second stage that departs from it. This...

This paper estimates econometrically the economic return on schooling among Portuguese cooperative managers, based on a survey carried out in 1999. The main findings indicate that the rate of return is in line with previous published research. The results also indicate that in this sector, the...