The claim of a positive association between a firm's social assets and its innovative capacity is a widely debated topic in the literature. Although controversial, such an argument has informed recent innovation policy across Germany, increasingly directed to the cluster formation. In the light...

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 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...