Norbert Trautmann – författare

This book gathers a selection of peer-reviewed papers presented at the International Conference on Operations Research (OR 2021), which was hosted online by the University of Bern from August 31 to September 3, 2021, and was jointly organized by the Operations Research Societies of Switzerland (SVOR/ASRO), Germany (GOR e.V.), and Austria (ÖGOR).The respective papers discuss classical mathematical optimization, statistics and simulation techniques. These are complemented by computer science methods, and by tools for processing data, designing and implementing information systems. The book also examines recent advances in information technology, which allow massive volumes of data to be processed and enable real-time predictive and prescriptive business analytics to drive decisions and actions. Lastly, it presents a selection of problems that are modeled and treated while taking into account uncertainty, risk management, behavioral issues, etc.

This book gathers a selection of peer-reviewed papers presented at the International Conference on Operations Research (OR 2021), which was hosted online by the University of Bern from August 31 to September 3, 2021, and was jointly organized by the Operations Research Societies of Switzerland (SVOR/ASRO), Germany (GOR e.V.), and Austria (ÖGOR).The respective papers discuss classical mathematical optimization, statistics and simulation techniques. These are complemented by computer science methods, and by tools for processing data, designing and implementing information systems. The book also examines recent advances in information technology, which allow massive volumes of data to be processed and enable real-time predictive and prescriptive business analytics to drive decisions and actions. Lastly, it presents a selection of problems that are modeled and treated while taking into account uncertainty, risk management, behavioral issues, etc.

This collection of essays is dedicated to Professor Klaus Neumann, Head and Chair of the Institute for Economic Theory and Operations Research WiOR at the University of Karlsruhe. On the occasion of his emeritation, disciples, colleagues, scientific companions, and friends coming from dif­ ferent fields have contributed their perspectives on Operations Research to form a broad view on the discipline. The papers are organized in four parts on optimization, OR in production and service management, OR in logistics, and interdisciplinary approaches. We thank all the authors for their participation in publishing this volume. Mrs. Ute Wrasmann from Deutscher Universitats-Verlag deserves credit for her interest and assis­ tance on this project. Finally, we would like to express our gratitude to PTV Planung Transport Verkehr AG in Karlsruhe and to numerous former WiOR colleagues for their financial support. Klaus Neumann was born in Liegnitz (Silesia) in 1937. Prom 1955 to 1961 he studied mathematics at the Technical Universities of Dresden and Munich. His first paper on analog computers and dynamic programming was published less than two years later. In 1964 he obtained a Ph. D. in mathematics under the supervision of Josef Heinhold in Munich. After a two-year stay in industry, he returned to his alma mater, working on the fields of dynamic optimization and control theory.

Bei der Anlagenbelegungsplanung in der Prozessindustrie muss eine im Vergleich zur Situation in der Fertigungsindustrie erheblich schwierigere Optimierungsaufgabe gelöst werden. Restriktionen wie Mindestbestände und begrenzte Kapazitäten von Lagern für Zwischenprodukte, reihenfolgeabhängige Umrüstzeiten von Apparaten, Nachliege- und Verfallszeiten oder zyklische Materialflüsse bestimmen die Komplexität des Problems.Norbert Trautmann entwickelt einen Dekompositionsansatz zur Optimierung der Chargenproduktion auf Mehrzweckanlagen, der eine Belegungsplanung mit Hilfe von Modellen und Methoden zur ressourcenbeschränkten Projektplanung sowie Standardsoftware zur nichtlinearen Optimierung ermöglicht. Die in einer experimentellen Performanceanalyse nachgewiesene Planungsqualität bei kurzer Rechenzeit erlaubt die Einbindung des Ansatzes in Advanced-Planning-Systeme.

In der Produktionswirtschaft stand bisher die Auseinandersetzung mit Themen der Fertigungsindustrie im Vordergrund. Leistungsfähige Planungsmethoden in der Prozessindustrie blieben weitgehend unerforscht. Norbert Trautmann entwickelt einen zweistufigen Ansatz zur operativen Planung der Chargenproduktion auf Mehrzweckanlagen. Auf der ersten Stufe (Batching) werden die zur Deckung der gegebenen Primärbedarfe benötigte Menge von Chargen und die zugehörigen Chargengrößen ermittelt. Gegenstand der zweiten Stufe (Batch-Scheduling) ist die zeitliche Zuordnung der Betriebsmittel und der Mitarbeiter zu diesen Chargen. Die Praxisrelevanz der vorgestellten Modelle und Verfahren wird durch eine Fallstudie und ein Beispiel aus der Aluminium-Industrie demonstriert.

This collection of essays is dedicated to Professor Klaus Neumann, Head and Chair of the Institute for Economic Theory and Operations Research WiOR at the University of Karlsruhe. On the occasion of his emeritation, disciples, colleagues, scientific companions, and friends coming from dif­ ferent fields have contributed their perspectives on Operations Research to form a broad view on the discipline. The papers are organized in four parts on optimization, OR in production and service management, OR in logistics, and interdisciplinary approaches. We thank all the authors for their participation in publishing this volume. Mrs. Ute Wrasmann from Deutscher Universitats-Verlag deserves credit for her interest and assis­ tance on this project. Finally, we would like to express our gratitude to PTV Planung Transport Verkehr AG in Karlsruhe and to numerous former WiOR colleagues for their financial support. Klaus Neumann was born in Liegnitz (Silesia) in 1937. Prom 1955 to 1961 he studied mathematics at the Technical Universities of Dresden and Munich. His first paper on analog computers and dynamic programming was published less than two years later. In 1964 he obtained a Ph. D. in mathematics under the supervision of Josef Heinhold in Munich. After a two-year stay in industry, he returned to his alma mater, working on the fields of dynamic optimization and control theory.