In der vorliegenden Untersuchung wird die operative Entscheidung über Eigenfertigung und Fremdbezug betrachtet. Exemplarisch wird dargelegt, dass klassische Entscheidungshilfen unwirtschaftliche Ergebnisse hervorbringen. Die qualitative und quantitative Fehlspezifikation der Fremdbezugsprodukte...

The objective of this paper is to discuss the use of modern frontier efficiency analysis to analyze firm performance in the insurance industry. The objective is to provide the foundations for insurance economists to use in adapting their research to incorporate the frontier efficiency approach....

We apply duality methods of linear and convex programming to the problems of operation and rental valuation of facilities for conversion and storage of cyclically priced goods, e.g. , energy. Both problems are approached by shadow-pricing the stock (which is a purely intermediate commodity); and...

Duality methods of linear and convex programming are applied to impute definite marginal values to the fixed inputs of a hydroelectric plant from the operating profit. Our earlier analysis of pumped storage (of energy and other cyclically priced goods) is thus extended to valuation of an...

We propose a multi-stage stochastic trading cost model in optimal portfolio selection. This strategy captures uncertainty in implicit transaction costs incurred by an investor during initial trading and in subsequent rebalancing of the portfolio. We assume that implicit costs are stochastic as...

We analyze optimal compensation schedules for the directors of two plants belonging to the same owner and producing the same good but serving geographically differentiated markets. Since the outcome of each director depends on his own effort and on a random variable representing market...