Weak disposability based models of environmental technologies typically assume equiproportionate trade-offs between desired and undesired outputs. We postulate a generalised version of weak disposability allowing for different types of trade-offs between good and bad outputs and derive a new...

This paper explores the effects of innovation efficiency on technology gap and product diversity between a leading firm and its competitor. Our analysis shows some interesting results: when innovation efficiency is sufficiently large and increases, the leading firm may expand technology gap, and...

Einführung -- Zunehmender Effizienzdruck im Marketing - Doing more with less -- Konzeptionelle und theoretische Grundlagen der Effizienzanalyse -- Begrifflich-konzeptionelle Grundlagen der Effizienzanalyse -- Allgemeine theoretische Fundierung der Effizienzanalyse -- Konzeptualisierung der...

Based on the seminal paper of Farrell (1957), researchers have developed several methods for measuring e fficiency. Nowadays, the most prominent representatives are nonparametric data envelopment analysis (DEA) and parametric stochastic frontier analysis (SFA), both introduced in the late 1970s....