A multiproducttranslog normalized shadow profit function is used to examineX-efficiency and related issues with respect to Taiwan's bankingsector. The model developed here is theoretically more appropriatecompared to that proposed by Berger, Hancock, and Humphrey (1993);as the former is obtained...

The paper discusses efficiency issues in the public provision of environmental services, in particular waste water treatment. It is shown that in the face of increasing, respectively decreasing returns to scale the zero profit constraint of a cost minimizing public firm induces underinvestment,...