The production planning with renewable resources faces several special problems compared tocommon planning methods with inputs which are “always available”. Due to their unsteadiness ingrowth, external influences like weather and natural resources and specific transport and...

Entscheidungsprobleme, die mit dem Instrumentarium der linearen Programmierung gelöst werden, zeichnen sich durch die Möglichkeit aus, die Zielsetzung des Problembereichs und die Restriktionen in linearer Gleichungen und Ungleichungen zu beschreiben. Durch die Überführung der Zielfunktion...

We consider consistent tests for stochastic dominance efficiency at any order of a given portfolio with respect to all possible portfolios constructed from a set of assets. We justify block bootstrap approaches to achieve valid inference in a time series setting. The test statistics are computed...

This paper treats the problem of setting the inventory level of closed-loop owlines operating under the constant-work-in-process (CONWIP) protocol. We solve ahuge but simple linear program that models an entire simulation run of a closed-loopow line in discrete time to determine a production...

Im vorliegenden Arbeitsbericht wurde die Optimierung von LP-Modellen mit dem PCWerkzeugWhat’s Best dargestellt. Zunächst wurden verschiedene Werkzeuge zur LinearenProgrammierung in einer Übersicht vorgestellt und What’s Best ausgewählt. Im nächstenSchritt wurde ein erweitertes...

In this paper the authors present a case study from the woodprocessingindustry. It focuses on a cutting process in which material fromstock is cut down in order to provide the items required by the customers in thedesired qualities, sizes and quantities. In particular, two aspects make this...

In this paper the authors present a case study from the woodprocessingindustry. It focuses on a cutting process in which material fromstock is cut down in order to provide the items required by the customersin the desired qualities, sizes, and quantities. In particular, two aspectsmake this...

This paper presents a linear programming approach to analyze and optimizeow lines with limited buer capacities and stochastic processing times. The basic ideais to solve a huge but simple linear program that models an entire simulation run of amulti-stage production process in discrete time, to...

Dieser Aufsatz dient dem Versuch, ein konsistentes wirtschaftspolitisches Bewertungsverfahrenzur Analyse der Leistungsfähigkeit der genossenschaftlichen Bankunternehmung zuentwickeln. Dafür wird das auf linearer Programmierung beruhende Schätzverfahren "DataEnvelopment Analysis (DEA)"...

This paper shows that cycling of the simplex method for the m×n Transportation Problemwhere k-1 zero basic variables are leaving and reentering the basis does not occur once it doesnot occur in the k×k Assignment Problem. A method to disprove cycling for a particular k isapplied for k=2,3,34,5...