@article{TerbrackFrankHerrmannetal., author = {Terbrack, Hajo and Frank, Ingo and Herrmann, Frank and Claus, Thorsten and Trost, Marco and G{\"o}tz, Matthias}, title = {A literature database on ecological sustainability in hierarchical production planning}, series = {Anwendungen und Konzepte der Wirtschaftsinformatik}, journal = {Anwendungen und Konzepte der Wirtschaftsinformatik}, number = {12}, publisher = {AKWI}, issn = {2296-4592}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-23539}, pages = {36 -- 40}, abstract = {This article describes a systematic literature search of research articles on the topics of ecological sustainability and production planning. Over 900 research articles deal intensively with these topics. These articles were catalogued and included in a database. They can be evaluated with an analysis tool, developed by the research group. The tool is available free of charge via a website of the research group.}, language = {en} } @inproceedings{TrostClausHerrmann, author = {Trost, Marco and Claus, Thorsten and Herrmann, Frank}, title = {Influence of Company Sizes in adapted Master Production Scheduling for Improving Human Working Conditions}, series = {Proceedings of the 34th International ECMS Conference on Modelling and Simulation, ECMS 2020}, booktitle = {Proceedings of the 34th International ECMS Conference on Modelling and Simulation, ECMS 2020}, editor = {Steglich, Mike}, publisher = {European Council for Modelling and Simulation}, isbn = {978-3-937436-68-5}, doi = {10.7148/2020-0287}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-24817}, pages = {287 -- 293}, abstract = {Sustainability is an important topic in production plan-ning and control. This article contributes in particular the to further research on the social dimension. It pre-sents a linear optimisation model for Master Produc-tion Scheduling in order to improve human working conditions. Existing approaches have already identified a considerable potential for improvements. Further-more, this article analyses the influence of the compa-ny size on workload and costs using an application with a high proportion of manual activities. It is demonstrat-ed that human working conditions can be improved independently from the company size without increas-ing costs. In addition, smaller companies tend to have a higher exhaustion and the workload affects the total costs more in smaller companies. Therefore, smaller companies might benefit more from an improvement in human working conditions.}, language = {en} } @inproceedings{TerbrackHerrmannClaus, author = {Terbrack, Hajo and Herrmann, Frank and Claus, Thorsten}, title = {Deviation in Energy Consumption on Aggregate Production Planning Level in Industry Practice}, series = {Proceedings of the 34th International ECMS Conference on Modelling and Simulation (ECMS 2020)}, booktitle = {Proceedings of the 34th International ECMS Conference on Modelling and Simulation (ECMS 2020)}, editor = {Steglich, Mike}, isbn = {978-3-937436-68-5}, doi = {10.7148/2020-0334}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-24804}, pages = {334 -- 340}, abstract = {In this article, we discuss energy consumption of producing firms on aggregate production planning. While almost constant energy consumption can be the case for a producing firm, highly fluctuating energy demand can occur as well. Together with volatile energy supply, e.g. due to renewable energy sources, this combination of fluctuating energy supply and demand can result in planning uncertainty and high energy costs. We propose different case studies in which such high deviation in the electricity consumption of a producing firm occurs due to aggregate production planning without appropriate consideration of energy consumption.}, language = {en} } @inproceedings{Herrmann, author = {Herrmann, Frank}, title = {The Use of Simulation for Manufacturing Applications}, series = {Proceedings of the 12th International Conference on Advances in System Simulation, SIMUL 2020, 18.-22.10.2020 in Porto, Portugal}, booktitle = {Proceedings of the 12th International Conference on Advances in System Simulation, SIMUL 2020, 18.-22.10.2020 in Porto, Portugal}, publisher = {IARIA XPS Press}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-24899}, abstract = {This paper summarizes six presentations in a session of the track "Use of Simulation for Manufacturing Applications". The research work deals with the following key issues of this track: Modelling of process problems in manufacturing; Solutions of planning problems in manufacturing; Simulation of processes in manufacturing. This publication shows that the contributions in this track address research questions that are of high importance for industrial practice as well as current research directions such as stochastic optimization or the efficient search of large solution spaces.}, language = {en} } @misc{Herrmann, author = {Herrmann, Frank}, title = {Scheduling of a real world filter production with lot-size 1}, series = {SIMUL 2020: The Twelfth International Conference on Advances in System Simulation, 18.-22.10.2020 in Porto, Portugal}, journal = {SIMUL 2020: The Twelfth International Conference on Advances in System Simulation, 18.-22.10.2020 in Porto, Portugal}, editor = {Herrmann, Frank and Parra, Lorena and Popescu, Manuela}, publisher = {IARIA XPS Press}, address = {Wilmington, DE, USA}, isbn = {978-1-61208-831-0}, pages = {1 -- 6}, abstract = {In industrial practice, a travelling crane on the ceiling of a factory hall transports products in process from one station to the next one in a production line. Due to space restrictions, there is no buffer between the stations. The production line at Fiedler Andritz, Regensburg in Germany, can be seen as an example of such a problem class. Such restrictions reduce the set of feasible schedules even more than the no-buffer restrictions discussed in the literature in the case of limited storage. Since this scheduling problem is integrated in the usual hierarchical planning, the tardiness is minimised. Due to the high number of jobs as well as the goal of a simple algorithm, scheduling is always done by priority rules at the company site. The standard approach of using the net processing time causes poor results. A simulation of the processing time is suggested. In addition, several very relevant priority rules from the literature are modified by this simulated processing and significantly better results are obtained. Keywords-Simulation of processing time; scheduling, flowshop; no-buffer (blocking); no-wait; priority rules; real world application; filter production}, language = {en} } @article{Herrmann, author = {Herrmann, Frank}, title = {Analyse von L{\"o}sungsr{\"a}umen bei der Ressourcenbelegungsplanung}, series = {Anwendungen und Konzepte der Wirtschaftsinformatik online}, journal = {Anwendungen und Konzepte der Wirtschaftsinformatik online}, number = {11}, publisher = {AKWI}, doi = {10.26034/lu.akwi.2020.3254}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-23079}, pages = {15 -- 32}, abstract = {Ressourcenbelegungsplanungsprobleme haben fast immer exponentiell wachsende L{\"o}sungsr{\"a}aume. Ausnahmen sind einfachste Ressourcenbelegungsplanungsprobleme die sich im wesentlichen durch Sortierverfahren optimal l{\"o}sen lassen. Dadurch sind Ressourcenbelegungsplanungsprobleme NP-vollst{\"a}ndig. Nach der Literatur haben L{\"o}sungsr{\"a}ume von einigen NP-vollst{\"a}ndigen Optimierungsproblemen g{\"u}nstige Eigenschaften, die Metaheuristiken, wie genetische Algorithmen und lokale Suche, ausnutzen, um in vertretbarer Rechenzeit gute L{\"o}sungen zu finden. Zu Ihrer Erkennung gibt es in der Literatur etablierte Analysem{\"o}glichkeiten. Sie werden in dieser Arbeit auf die Ressourcenbelegungsplanung {\"u}bertragen und ihre Wirkung bzw. die auftretenden Schwierigkeiten werden anhand von einfachen Problemen aufgezeigt.}, language = {de} } @article{HerrmannZimmermann, author = {Herrmann, Frank and Zimmermann, J{\"u}rgen}, title = {Analyse und Konzeptionierung eines verteilten Systems zur Kommunikation von Betriebsdaten und Statistiken in Intralogistikanlagen}, series = {Anwendungen und Konzepte der Wirtschaftsinformatik online}, journal = {Anwendungen und Konzepte der Wirtschaftsinformatik online}, number = {11}, publisher = {AKWI}, doi = {10.26034/lu.akwi.2020.3255}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-23090}, pages = {50 -- 59}, abstract = {Im vorliegenden Artikel werden Vorarbeiten zur Entwicklung eines Betriebsdatenverwaltungssystems f{\"u}r Intralogistikanlagen des Herstellers TGW Software Services beschrieben. Das beschriebene Vorgehen umfasst dabei im Wesentlichen vier Schritte. Zun{\"a}chst wird der aktuelle Stand in der Software des betrachteten Unternehmens hinsichtlich des Sammelns, Speicherns und Auswertens von Betriebsdaten analysiert. Daran schließt sich eine Anforderungsanalyse f{\"u}r die Betriebsdatenverwaltung an. Zusammen mit den betroffenen Entwicklungsleitern werden die grundlegenden Ziele und Grenzen der zu entwickelnden Betriebsdatenverwaltung definiert. Es werden Quellen von Anforderungen f{\"u}r die Komponente gesammelt und alle funktionalen und nichtfunktionalen Anforderungen anhand dieser Quellen erarbeitet. Basierend darauf wird ein erstes Modell erstellt, das die Entit{\"a}ten, Beziehungen und Abl{\"a}ufe, die sich aus den ermittelten funktionalen Anforderungen ergeben, in konsolidierter Form zusammenfasst. Dieses wird zusammen mit einigen {\"U}berlegungen, die zu diesem Modell gef{\"u}hrt haben, beschrieben. Zuletzt werden dann verschiedene m{\"o}gliche Konzepte zum grundlegenden technischen Aufbau einer Implementierung der Betriebsdatenverwaltung diskutiert, um schließlich anhand der definierten Qualit{\"a}tsziele eine Empfehlung f{\"u}r einen Konzeptvorschlag abzugeben.}, language = {de} } @inproceedings{DavendraHerrmannBialicDavendra, author = {Davendra, Donald and Herrmann, Frank and Bialic-Davendra, Magdalena}, title = {Scheduling tardiness constrained flow shop with simultaneously loaded stations using Genetic Algorithm}, series = {Proceedings of the 4th International Conference on Intelligent Systems, Metaheuristics \& Swarm Intelligence (ISMSI 2020): Thimphu, Kingdom of Bhutan during March 21-22, 2020}, booktitle = {Proceedings of the 4th International Conference on Intelligent Systems, Metaheuristics \& Swarm Intelligence (ISMSI 2020): Thimphu, Kingdom of Bhutan during March 21-22, 2020}, publisher = {ACM}, doi = {10.1145/3396474.3396475}, abstract = {In this study, a real world flow shop with a transportation restriction is regarded. This restriction reduces the set of feasible schedules even more than the no-buffer restrictions discussed in the literature in the case of limited storage. Still this problem is NP-hard. Since this scheduling problem is integrated in the usual hierarchical planning, the tardiness is minimised. Compared to even specific priority rule for this class of problems the suggested genetic algorithm delivers significant better results. The specific structure of this class of problems complicates the calculation of the performance criteria. This is solved by a simulation algorithm.}, subject = {Ablaufplanung}, language = {en} } @article{Herrmann, author = {Herrmann, Frank}, title = {Die Smart Factory und ihre Risiken}, series = {Anwendungen und Konzepte der Wirtschaftsinformatik}, journal = {Anwendungen und Konzepte der Wirtschaftsinformatik}, number = {12}, publisher = {AKWI}, pages = {70 -- 83}, abstract = {In dieser Arbeit werden die Risiken einer Smart Factory untersucht und strukturiert dargestellt, um den Status der Smart Factory zu sondieren. Somit dient die Arbeit als {\"U}berblick {\"u}ber die technischen Komponen-ten einer Smart Factory und die damit verbundenen Risiken und nimmt eine ganzheitliche Sichtweise der Smart Factory ein. Die Ergebnisse zeigen, dass der gr{\"o}ßte Handlungsbedarf im technologischen Bereich liegt. Folglich wurden die Themen Standardisierung, Informationssicherheit, Verf{\"u}gbarkeit der IT-Infrastruktur, Verf{\"u}gbarkeit von schnellem Internet und komplexen Systemen priorisiert. Die organisato-rischen und finanziellen Risiken, welche ebenfalls eine wichtige Rolle bei einer Smart Factory Transfor-mation spielen, werden dabei adressiert.}, language = {de} } @incollection{Herrmann, author = {Herrmann, Frank}, title = {Generic Scheduling by an optimization model demonstrated for a partly automated production line}, series = {Recent Advances in Science and Technology Research Vol. 7}, booktitle = {Recent Advances in Science and Technology Research Vol. 7}, editor = {Makul, Natt}, publisher = {Book Publisher International (a part of SCIENCEDOMAIN International)}, isbn = {978-93-90431-52-6}, pages = {13 -- 27}, language = {en} }