Summary In this paper we add new results to the investigation of productivity levels rather than productivity changes, as proposed by Hall/Jones (1996, 1997, 1999). To obtain measures of relative productivity levels we depart from traditional growth accounting and calculate the Malmquist index...

Zusammenfassung In der vorliegenden Studie wird mit Hilfe der nicht-parametrischen DEA-Methode die relative Effizienz von representativ ausgewählten Stromversorgungsunternehmen in Deutschland bestimmt. Die DEA erlaubt es, auch nicht marktfähige In- und Outputfaktoren in die Analyse...

Summary With this paper we attempt to complement the discussion on price volatility on stock markets by an approach, which can also take into consideration so-called nonrational behaviour. This happens by formally integrating socioeconomic elements into the price expectation process of the share...