Fixed point theorems are the standard tool used to prove the existence of equilibria in mathematical economics. This paper shows how to prove a slight generalization of Brouwer's and Kakutani's fixed point theorems using the familiar techniques of drawing and shifting curves in the plane and is,...

?Innovation und Technischer Fortschritt im Energiebereich? ist das Thema des Modellexperiment V des Forums für Energiemodelle. In diesem Zusammenhang sollen die am Experiment beteiligten Modelle in Bezug auf die Abbildung von technischem Fortschritt verbessert und unterschiedliche Szenarien...

The aim of this paper is to give an overview over the DART model and its applications. The main focus is on the implementation of climate impacts into DART in the course of coupling DART to the ocean-atmosphere model and on the associated empirical problems. The basic DART model and some...