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PublicationEconomic impact of the introduction of the German HGV toll system( 2007)After a long period of political debate and technological difficulties, the German heavy goods vehicle ( HGV) toll system was finally put into operation in January 2005. This paper is divided into two main parts. The first section discusses the German HGV toll in detail, with a focus on fee calculation. This is followed by an analysis of the macro-economic impact of the toll. Based on an input-output model for the German economy involving 70 distinct industries, undesirable potential price increases are considered along with potential positive employment effects which can be expected if the toll revenue re-enters the economy.
PublicationApproximations made evaluating the residual electrical dc resistivity of disordered alloys( 1994)The residual electrical dc resistivity of the transition-metal-alloy system Cu-Pt is evaluated by making use of the relativistic version of the Korringa-Kohn-Rostoker-coherent potential approximation and the one-electron Kubo-Greenwood formula for disordered systems. Starting from the results of a previous calculation the influence of truncation of the angular momentum expansion, the effects of self-consistency of the alloy potential, the importance of vertex corrections, and the difference between the nonrelativistic and the relativistic current operator are examined.