In der vorliegenden Arbeit werden Modelle für die Portfolio-Optimierung analysiert und implementieren. Dabei stehen quantitative Methoden der Fuzzy-Logik im Vordergrund. Zunächst wird das klassische Portfolio-Modell nach Markowitz dargestellt und dessen Resultate für einen Vergleich mit einem...

A methodology is proposed for evaluating the level of service within an airportlandside system from the passenger's point of view using linguistic servicecriteria. The new concept of level of service for a transport system, particularlywithin the airports indicates that there must be strong...

During recent years, the supply chain performance management has become a key strategic consideration. Many manufacturers seek to collaborate with their suppliers and customers in order to upgrade their competitiveness and management performance. Because of complexity, uncertainty and vagueness...

Ein "aktivierender", die Selbstständigkeit und Eigenverantwortlichkeit der BürgerInnen anrufender Staat, der gleichzeitig auf Verunsicherung, Spaltung, Kontrolle und Bestrafung setzt - gegenwärtige Politiken des Sozialen in Deutschland erweisen sich augenscheinlich als paradox. In dieser...

In this paper, we present the FC direct trust value-based decision making methodology, for making direct trust value based decisions regarding interactions in (a) a given context and during the current time slot, and (b) a given context and at a future time slot. The direct trust value-based...

General economic developments as well asrecent fundamental changes in the CommonAgricultural Policy will likely impact significantly on theEuropean farm structure. Although a decline of totalfarm numbers continues to be the general observation,important differences occur across regions and...

Purpose - The purpose of this paper is to examine the performance of the vector error-correction (VEC) econometric modelling technique in predicting short- to medium-term construction manpower demand. Design/methodology/approach - The VEC modelling technique is evaluated with two conventional...