This paper presents a new algorithm for the dynamic Multi-Level Ca-pacitated Lot Sizing Problem with Setup Carry-Overs (MLCLSP-L). TheMLCLSP-L is a big-bucket model that allows the production of any num-ber of products within a period, but it incorporates partial sequencing of theproduction...

This paper presents an optimization-based solution approach for the dynamicmulti-level capacitated lot sizing problem (MLCLSP) with positive leadtimes. The key idea is to solve a series of mixed-integer programs in an iterativefix-and-optimize algorithm. Each of these programs is optimized over...

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...

In this paper, we present a bounding methodology that allows to compute a tight lower boundon the cycle time of fork--join queueing networks with blocking and with general service timedistributions. The methodology relies on two ideas. First, probability masses fitting (PMF)discretizes the...

Kommt es bei der Arbeit mit High-Tech Werkzeugmaschinen und Anlagen in der industriellen Produktion auf so unscharfe Qualitäten wie Fingerspitzengefühl, Intuition oder Ahnungen noch an?(...)

... Insbesondere Unternehmen, die komplexe Erzeugnissenach Kundenspezifikation in Einzel- oder Kleinserienfertigung herstellen, bewegen sich in einem Spannungsfeld zwischen der erforderlichen Kundennähe im Leistungsprogramm, der Komplexität desProduktionsprozesses und dessen Effizienz. Ein...

The study gives an insight into the possibilities to perform Break-Even-Analysis for a single-stage, make-to-order production in the case of stochastic production and demand structures. To model these structures, one resorts to queueing systems. Under practical aspects GI/G/.-systems turn out to...

Die folgenden Überlegungen basieren auf mehreren Gesprächen zur Vorbereitung der weiteren Arbeiten in der Abteilung, an denen Ingeborg Bothe, Dorothea Berg, Ileana Hamburg und Erich Latniak teilgenommen haben. Das Papier ist insofern ein erweitertes Protokoll, das dadurch eine Reihen von...

A mixed-model assembly line requires the solution of a short-term sequencing prob-lem which decides on the succession of different models launched down the line. Afamous solution approach stemming from the Toyota Production System is the socalled Level Scheduling, which aims at distributing the...