@article{Herrmann, author = {Herrmann, Frank}, title = {Einstellung von Dispositionsarten in ERP- und PPS-Systemen}, series = {Productivity Management}, journal = {Productivity Management}, number = {3}, publisher = {GITO-Verlag}, address = {Berlin}, pages = {45 -- 47}, language = {de} } @article{EnglbergerHerrmannManitz, author = {Englberger, Julian and Herrmann, Frank and Manitz, Michael}, title = {Two-stage stochastic master production scheduling under demand uncertainty in a rolling planning environment}, series = {International Journal of Production Research}, volume = {54}, journal = {International Journal of Production Research}, number = {20}, publisher = {Taylor \& Francis}, doi = {10.1080/00207543.2016.1162917}, pages = {6192 -- 6215}, abstract = {This paper proposes a scenario-based two-stage stochastic programming model with recourse for master production scheduling under demand uncertainty. We integrate the model into a hierarchical production planning and control system that is common in industrial practice. To reduce the problem of the disaggregation of the master production schedule, we use a relatively low aggregation level (compared to other work on stochastic programming for production planning). Consequently, we must consider many more scenarios to model demand uncertainty. Additionally, we modify standard modelling approaches for stochastic programming because they lead to the occurrence of many infeasible problems due to rolling planning horizons and interdependencies between master production scheduling and successive planning levels. To evaluate the performance of the proposed models, we generate a customer order arrival process, execute production planning in a rolling horizon environment and simulate the realisation of the planning results. In our experiments, the tardiness of customer orders can be nearly eliminated by the use of the proposed stochastic programming model at the cost of increasing inventory levels and using additional capacity.}, subject = {Hierarchische Produktionsplanung}, language = {en} } @article{Herrmann, author = {Herrmann, Frank}, title = {Automatisierte Durchf{\"u}hrung von Bestandsmanagement-Projekten}, series = {wt Werkstattstechnik online}, journal = {wt Werkstattstechnik online}, number = {10}, address = {Berlin}, pages = {819 -- 824}, abstract = {Ein effizientes und effektives Bestandsmanagement ist wichtig, um die Auswirkungen etwa durch fehlende Produkte gering zu halten und die Lagerhaltungskosten zu minimieren. Die f{\"u}r viele Unternehmen geeigneten Formeln zum Bestandsmanagement und seine produktspezifische Anwendung werden in einem Leitfaden zusammengefasst und anhand eines realen Anwendungsfalls in diesem Fachbeitrag beschrieben. Eine manuelle Durchf{\"u}hrung ist besonders aufwendig. Deshalb wird erl{\"a}utert, welche Schritte des Leitfadens effektiv durch ein entsprechendes Programm durchgef{\"u}hrt werden k{\"o}nnen.}, subject = {Bestandsmanagement}, language = {de} } @article{HerrmannBurgmayr, author = {Herrmann, Frank and Burgmayr, Georg}, title = {Verkn{\"u}pfung von Software zu einem IT-Logistiknetzwerk}, series = {MaschinenMarkt online}, journal = {MaschinenMarkt online}, publisher = {Vogel Business Media}, address = {W{\"u}rzburg}, abstract = {Softwaresysteme sind f{\"u}r den Betrieb moderner Logistik- und Herstellungsbetriebe essenziell. Doch kaum eine auf dem Markt angebotene L{\"o}sung kann alle Anforderungen in Lager und Montage l{\"u}ckenlos abdecken. Kleine und mittlere IT-Unternehmen schließen sich zusammen - und damit diese Marktl{\"u}cke.}, subject = {Logistikunternehmen}, language = {de} } @inproceedings{Herrmann, author = {Herrmann, Frank}, title = {Evaluierung von Standardsoftware zur Abbildung von Gesch{\"a}ftsprozessen}, series = {Herausforderungen an die Wirtschaftsinformatik: Wissensmanagement, E-Business und ereignisgesteuerte Gesch{\"a}ftsprozesse in Echtzeit}, booktitle = {Herausforderungen an die Wirtschaftsinformatik: Wissensmanagement, E-Business und ereignisgesteuerte Gesch{\"a}ftsprozesse in Echtzeit}, editor = {Fuchs, Gerhard and M{\"u}ller, Christian and Ritz, Harald and Saint-Mont, Uwe}, publisher = {Verlag News \& Media}, address = {Berlin}, doi = {10.15771/978-3-936527-10-0}, pages = {52 -- 69}, language = {de} } @inproceedings{HerrmannStumvoll, author = {Herrmann, Frank and Stumvoll, Ulrike}, title = {Einstellung von Losgr{\"o}ßenheuristiken in ERP- bzw. PPS-Systemen}, series = {Proceedings zu den 7. Wismarer Wirtschaftsinformatik-Tagen vom 3.-4. Juni 2010 an der Hochschule Wismar}, booktitle = {Proceedings zu den 7. Wismarer Wirtschaftsinformatik-Tagen vom 3.-4. Juni 2010 an der Hochschule Wismar}, subject = {PPS}, language = {de} } @inproceedings{ClausHerrmann, author = {Claus, Thorsten and Herrmann, Frank}, title = {Simulation als betriebliche Entscheidungshilfe}, series = {Erg{\"a}nzungsband zu den Proceedings zur 14. ASIM Fachtagung "Simulation in Produktion und Logistik", vom 6. bis 8. Oktober 2010 am Karlsruher Institut f{\"u}r Technologie, Karlsruhe}, booktitle = {Erg{\"a}nzungsband zu den Proceedings zur 14. ASIM Fachtagung "Simulation in Produktion und Logistik", vom 6. bis 8. Oktober 2010 am Karlsruher Institut f{\"u}r Technologie, Karlsruhe}, subject = {Produktion}, language = {de} } @inproceedings{Herrmann, author = {Herrmann, Frank}, title = {Berechnung des Werts von Informationen im Supply Chain Management}, series = {Tagungsband zum 100. MNU-Bundeskongress ; Regensburg, 5. bis 9. April 2009}, booktitle = {Tagungsband zum 100. MNU-Bundeskongress ; Regensburg, 5. bis 9. April 2009}, organization = {Deutscher Verein zur F{\"o}rderung des Mathematischen und Naturwissenschaftlichen Unterrichts}, subject = {Supply Chain Management}, language = {de} } @article{WohankaHerrmann, author = {Wohanka, Christian and Herrmann, Frank}, title = {Anbindung von Halbleiter Fertigungsautomaten an die SAP NetWeaver Plattform}, series = {Industrie-Management}, journal = {Industrie-Management}, number = {2}, publisher = {Gito Verlag}, address = {Bremen}, pages = {39 -- 42}, subject = {Fertigung}, language = {de} } @article{HeindlHerrmann, author = {Heindl, Martina and Herrmann, Frank}, title = {Verk{\"u}rzung von Ein- und Auslagerzeiten in Lagerprozessen}, series = {PPS-Management}, volume = {12}, journal = {PPS-Management}, number = {4}, publisher = {GITO Verlag}, address = {Berlin}, pages = {47 -- 50}, subject = {Lagerhaltung}, language = {de} } @book{Herrmann, author = {Herrmann, Frank}, title = {Operative Planung in IT-Systemen f{\"u}r die Produktionsplanung und -steuerung}, publisher = {Vieweg+Teubner}, isbn = {978-3-8348-8172-4}, doi = {10.1007/978-3-8348-8172-4}, abstract = {Die operative Planung in der Produktionslogistik besteht im Kern aus der Prognose von Bedarfen, dem Management von Lagerbest{\"a}nden, der Planung des Produktionsprogramms, der Materialbedarfsplanung und der Fertigungssteuerung. Kommerziell verf{\"u}gbare Enterprise Resource Planning-Systeme oder Produktionsplanungs- und -steuerungssysteme bieten hierf{\"u}r sehr viele Verfahren mit vielen Einstellungsm{\"o}glichkeiten an, die in diesem Buch detailliert erl{\"a}utert werden. Die ausf{\"u}hrlichen Beispiele und Fallstudien erleichtern das Nachvollziehen der Einzelschritte dieser Verfahren. Die Alternativen haben zum Teil signifikante Auswirkungen auf Parameter wie Termineinhaltung, Durchlaufzeit und Kapitalbindung, die das Erreichen der Unternehmensziele maßgeblich beeinflussen. Zur Unterst{\"u}tzung von Anwendern wird die Wirkung dieser Einstellungsm{\"o}glichkeiten analysiert und es werden Hinweise bzw. Leitf{\"a}den zu ihrer Einstellung gegeben.}, subject = {Enterprise-Resource-Planning}, language = {de} } @inproceedings{VitzthumClausHerrmann, author = {Vitzthum, Thorsten and Claus, Thorsten and Herrmann, Frank}, title = {Can Aggregate Production Planning (APP) be modified to be as good as Master Production Scheduling (MPS)}, series = {ACC Journal}, volume = {23}, booktitle = {ACC Journal}, number = {2}, doi = {10.15240/tul/004/2017-2-012}, pages = {155 -- 162}, abstract = {In diesem Beitrag wird anhand einer Fallstudie die Bedeutung der Hauptproduktionsprogrammplanung (HPPLAN) f{\"u}r die hierarchische Produktionsplanung herausgearbeitet werden. Dazu wird versucht das Ergebnis der aggregierten Gesamtplanung (AGGRPLAN) durch Ver{\"a}nderung einzelner Paramater so zu verbessern, dass es dem Ergebnis der HPPLAN entspricht. Im Rahmen der Untersuchungen konnten dabei Verbesserungen f{\"u}r einzelne Planungssituationen erzielt werden, eine generelle L{\"o}sung konnte jedoch nicht gefunden werden. Insbesondere der Einsatz eines geeigneten Kapazit{\"a}tsreduktionsfaktors in Verbindung mit der Ber{\"u}cksichtigung der Durchlaufzeit f{\"u}hrt zu einer Verbesserung der L{\"o}sung. Bei der Planung von mehr als einem Produkt ist allerdings schwierig einen geeigneten Kapazit{\"a}tsreduktionsfaktor zu finden, da dieser abh{\"a}ngig von der Nachfrage ist.}, subject = {Hierarchische Produktionsplanung}, language = {en} } @book{Herrmann, author = {Herrmann, Frank}, title = {Logik der Produktionslogistik}, publisher = {Oldenbourg}, isbn = {978-3-486-84856-4}, abstract = {F{\"u}r kosteneffiziente und flexible Produktionsprozesse wurden und werden zunehmend ausgefeilte Verfahren eingesetzt. Sie entstammen dem Operations Research, der, deswegen, nach wie vor eine hohe Produktivit{\"a}t aufweist. Diese Verfahren berufen sich auf grundlegende Resultate der Produktionslogistik, die sich beweisen lassen und daher zeitlos g{\"u}ltig sind. Ihre Kenntnis ist f{\"u}r das Verst{\"a}ndnis und die Einsatzm{\"o}glichkeiten, insbesondere die Grenzen, dieser Verfahren erforderlich. Es erlaubt auch die grundlegenden St{\"a}rken und Schw{\"a}chen von manchen aktuell diskutierten Ans{\"a}tzen zu analysieren. Die Konzepte und Verfahren werden im Detail begr{\"u}ndet bzw. hergeleitet; dies schließt die Beweise ein, die {\"u}berwiegend aus dem Internet heruntergeladen werden k{\"o}nnen. Zum schrittweisen Nachvollziehen der Konzepte und der Einzelschritte der Verfahren dienen die ausf{\"u}hrlich erl{\"a}uterten Beispiele. Das Buch richtet sich an Studierende der Wirtschaftswissenschaften, der Wirtschaftsinformatik und dem Operations Research sowie an Experten und Wissenschaftler, die sich f{\"u}r die Theorie zur Produktionslogistik interessieren. St{\"a}rken und Schw{\"a}chen von aktuell diskutierten Ans{\"a}tzen aufdecken.}, subject = {Fertigungslogistik}, language = {de} } @inproceedings{TrostTeichClausetal., author = {Trost, Marco and Teich, Enrico and Claus, Thorsten and Herrmann, Frank}, title = {Master Production Scheduling and the relevance of included social criteria}, series = {ACC Journal}, volume = {23}, booktitle = {ACC Journal}, number = {3}, doi = {10.15240/tul/004/2017-2-011}, pages = {146 -- 154}, abstract = {Folgender Beitrag untersucht die Notwendigkeit einer Ber{\"u}cksichtigung von Mitarbeiterauslastungen und davon abh{\"a}ngiger Bearbeitungszeiten in der Hauptproduktionsprogrammplanung. Zudem wird aufgezeigt, dass dieses Themengebiet aktuell eine Forschungsl{\"u}cke darstellt. Aus diesem Grund wird ein selbst entwickeltes lineares Optimierungsmodell f{\"u}r die Hauptproduktionsprogrammplanung vorgestellt, welches soziale Kriterien und eine geeignete Fallstudie enth{\"a}lt. Die Ergebnisse verdeutlichen, dass erhebliche Abweichungen durch eine Ignoranz von Mitarbeiterauslastungen und davon abh{\"a}ngiger Bearbeitungszeiten entstehen. Deshalb ist eine Integration zu empfehlen. Allerdings wird auch deutlich, dass weitere Forschungen notwendig sind, speziell f{\"u}r die Bestimmung geeigneter Ersch{\"o}pfungsfunktionen, so wie beispielsweise Funktionen f{\"u}r Lerneffekte existieren.}, subject = {Fertigungsprogrammplanung}, language = {en} } @inproceedings{TrostClausHerrmann, author = {Trost, Marco and Claus, Thorsten and Herrmann, Frank}, title = {Adapted Master Production Scheduling: Potential for Improving Human Working Conditions}, series = {Proceedings of the 33th European Conference on Modelling and Simulation 2019 (ECMS), Caserta, Italy}, volume = {33,1}, booktitle = {Proceedings of the 33th European Conference on Modelling and Simulation 2019 (ECMS), Caserta, Italy}, doi = {10.7148/2019}, pages = {310 -- 316}, abstract = {This article illustrates the problem of deficient working conditions like high work intensity and underlines the possibilities of production planning and control to improve them. However, an included literature search presents that previous approaches have predominantly considered social aspects within a short planning horizon and that there is a need for a long-term consideration. To address this research gap a linear optimization model for Master Production Scheduling is presented, which has been extended by basic aspects of personnel requirements planning and a control of personnel work intensity. The results show that improvements in working conditions can be achieved through adapted production planning without an automatically increase in costs. However , challenges in quantifying the corresponding social correlations are identified as well.}, subject = {Produktionsplanung}, language = {en} } @inproceedings{VitzthumClausHerrmann, author = {Vitzthum, Thorsten and Claus, Thorsten and Herrmann, Frank}, title = {Einfluss von Mitarbeiterqualifikationszeiten im Rahmen nachhaltiger Produktionsplanung}, series = {Simulation in Produktion und Logistik 2017, Kassel, 20.-22. September}, booktitle = {Simulation in Produktion und Logistik 2017, Kassel, 20.-22. September}, pages = {315 -- 324}, abstract = {This research paper evaluates the potential of reducing shortages and costs that are created by training measures as an example for measurement of extended qualification of key employees in sustainable production planning. Capacity planning with standard methods in Enterprise Resource Planning Systems, namely priority rules, are used. Almost always, the optimal solution is not found, although there is one. In addition, unnecessarily high stocks are built up. In real business situations, this causes lost profits.}, subject = {Enterprise-Resource-Planning}, language = {de} } @inproceedings{ForstnerStauberHerrmann, author = {Forstner, Robert and Stauber, Stephan and Herrmann, Frank}, title = {Simulationsstudie zur sequentiellen Beh{\"a}lterversorgung in der automatischen Intralogistik}, series = {Simulation in Produktion und Logistik 2017, September 20 - 22, 2017, Kassel, Germany}, booktitle = {Simulation in Produktion und Logistik 2017, September 20 - 22, 2017, Kassel, Germany}, pages = {489 -- 498}, abstract = {After explaining the necessity of sequential sorting processes within branched conveyor systems and introducing basic sequential controlling principles, this paper analyses with a simulation study different ways of implementing sequential supply processes for small load carriers in an abstracted automated intralogistics system. Simulation results show that a layout with sequencing systems with explicit buffer places can ensure much higher sequential throughput performances than a layout with a loop for sequencing or a layout which implements sequencing processes just with the control of carrier sources. Because of sequential control dependencies in the layout with buffer places, further experiments for sequential supply processes with different layouts forms have to be assessed.}, subject = {F{\"o}rderanlage}, language = {de} } @article{JanssenDiabatSaueretal., author = {Janssen, Larissa and Diabat, Ali and Sauer, J{\"u}rgen and Herrmann, Frank}, title = {A stochastic micro-periodic age-based inventory replenishment policy for perishable goods}, series = {Transportation Research Part E: Logistics and Transportation}, volume = {118}, journal = {Transportation Research Part E: Logistics and Transportation}, number = {October}, publisher = {Elsevier}, doi = {10.1016/j.tre.2018.08.009}, pages = {445 -- 465}, abstract = {In this paper, we propose a micro-periodic inventory replenishment policy for quickly perishable goods with fixed and known lifetime of items, deterministic lead time, fixed given order cycle, mixed issuing policies (FIFO and LIFO), age-based stock, imperfect items and target customer service level under random demand. The inventory policy is based on time of day (morning, midday, afternoon or evening). The results of our simulation study show that the proposed micro-periodic inventory policy leads to waste reduction of 66\% as well as a partial decrease in cost compared to inventory policy with planning on a daily basis.}, subject = {Frischware}, language = {en} } @article{TrostTeichClausetal., author = {Trost, Marco and Teich, Enrico and Claus, Thorsten and Herrmann, Frank}, title = {Ein lineares Optimierungsmodell zur Hauptproduktionsprogrammplanung mit Ber{\"u}cksichtigung sozialer Gr{\"o}ßen}, series = {uwf UmweltWirtschaftsForum}, volume = {25}, journal = {uwf UmweltWirtschaftsForum}, doi = {10.1007/s00550-017-0454-7}, pages = {71 -- 80}, abstract = {Aufgrund weniger existenter sozialorientierter Forschungen im Rahmen der Produktionsplanung und -steuerung stellt dieser Beitrag ein lineares Optimierungsmodell f{\"u}r die Hauptproduktionsprogrammplanung vor, welches soziale Kriterien ber{\"u}cksichtigt. Erste Ergebnisse deuten an, dass geringe Kosten nicht durch eine maximierte Mitarbeiterauslastung entstehen sondern durch geringe Kapazit{\"a}tsschwankungen.}, subject = {Hierarchische Produktionsplanung}, language = {de} } @book{ClausHerrmannTeich, author = {Claus, Thorsten and Herrmann, Frank and Teich, Enrico}, title = {Kostensimulation}, publisher = {Springer Gabler}, address = {Wiesbaden}, isbn = {978-3-658-25167-3}, doi = {10.1007/978-3-658-25168-0}, subject = {Kostenanalyse}, language = {de} } @inproceedings{TrostClausTeichetal., author = {Trost, Marco and Claus, Thorsten and Teich, Enrico and Selmair, Maximilian and Herrmann, Frank}, title = {Social and Ecological Capabilities for a sustainable Hierarchical Production Planning}, series = {Proceedings of the 30th EUROPEAN Conference on Modeling and Simulation (ECMS 2016), May 31st - June 3rd, 2016, Regensburg, Germany}, booktitle = {Proceedings of the 30th EUROPEAN Conference on Modeling and Simulation (ECMS 2016), May 31st - June 3rd, 2016, Regensburg, Germany}, doi = {10.7148/2016-0432}, abstract = {Production planning and production control mainly focus on optimising the entire production system of a company. On the basis of hierarchical planning as a suitable method for solving this task, this paper shows - besides the economic dimension taken into account so far - that there are also social and ecological effects which will have to be considered in the process of planning. For this purpose, we would like to indicate here which social and ecological parameters can be or have already been taken into account for master production scheduling, for lot sizing and resource scheduling. As a result, an overview has been created which presents the existing concepts of sustainable production planning and production control as well as the existing deficits regarding the sustainability perspective.}, subject = {Hierarchische Produktionsplanung}, language = {en} } @inproceedings{JanssenHerrmannClaus, author = {Janssen, Larissa and Herrmann, Frank and Claus, Thorsten}, title = {Beitrag zur Abfallreduktion mittels mathematischer Optimierung und simulationsbasierter Validierung}, series = {Proceedings of the 16th International Conference on Simulation in Production and Logistics, September 23 - 25, 2015, Dortmund, Germany}, booktitle = {Proceedings of the 16th International Conference on Simulation in Production and Logistics, September 23 - 25, 2015, Dortmund, Germany}, abstract = {Perishable goods with a shelf life of 3-5 days require frequent inventory controls in the food retail trade. Maintaining a high service level for these products in stores is difficult due to demand uncertainty. A high service level often leads to a lot of stock in stores. In case it is not sold, it is waste. As an approach towards waste volume reduction, the economic order quantity (EOQ) problem is optimised in combination with the delivery frequency problem on the basis of the microperiods, i.e. morning, midday, afternoon, and evening. The presented model is designed for multiple stores with one regional warehouse. The simulation model measures the waste volume in stores. Experiments show that the combined optimisation of both problems leads to a reduction of total costs and waste volume.}, subject = {Bestandsmanagement}, language = {de} } @inproceedings{SelmairHerrmannClausetal., author = {Selmair, Maximilian and Herrmann, Frank and Claus, Thorsten and Teich, Enrico}, title = {Potential of Reducing the Total Energy Consumption by Scheduling a Jobshop Production System}, series = {Proceedings of the 16th International Conference on Simulation in Production and Logistics, September 23 - 25, 2015, Dortmund, Germany}, booktitle = {Proceedings of the 16th International Conference on Simulation in Production and Logistics, September 23 - 25, 2015, Dortmund, Germany}, pages = {375 -- 384}, abstract = {This research paper has evaluated the potential of reducing energy consumption by scheduling jobshop production systems with machines using standby modes in free times. The initial introduction of the planning issue is followed by a description of the approach to assess the available potential. Subsequently, the research procedure by means of simulation, a detailed discussion of the results and a perspective on future research is given. Moreover, the notion that scheduling influences the energy consumption in jobshop production systems is supported. The presented simulation research also documents that there is no direct correlation between energy consumption and total lead time, although this was presumed usually. Finally, this paper provides a forecast for a possible optimisation model as well as an exemplary model with an energy-optimised schedule plan.}, subject = {Produktionsplanung}, language = {en} } @inproceedings{SelmairClausTrostetal., author = {Selmair, Maximilian and Claus, Thorsten and Trost, Marco and Bley, Andreas and Herrmann, Frank}, title = {Job Shop Scheduling with Flexible Energy Prices}, series = {Proceedings of the 30th EUROPEAN Conference on Modeling and Simulation, May 31st - June 3rd, 2016, Regensburg, Germany}, booktitle = {Proceedings of the 30th EUROPEAN Conference on Modeling and Simulation, May 31st - June 3rd, 2016, Regensburg, Germany}, doi = {10.7148/2016-0488}, abstract = {The rising energy prices - particularly over the last decade - pose a new challenge for the manufacturing industry. Reactions to climate change, such as the advancement of renewable energies, raise the expectation of further price increases and variations. Regarding the manufacturing industry, production planning and controlling can have a significant influence on the in-plant energy consumption. In this paper, we develop a scheduling method as a linear optimization model with the objective to minimize energy costs in a job shop production system.}, subject = {Job Shop Scheduling}, language = {en} } @inproceedings{HerrmannLangeManitz, author = {Herrmann, Frank and Lange, Frederick and Manitz, Michael}, title = {Order release within hierarchical production planning and control using product specific clearing functions}, series = {Proceedings of the International Annual Conference of the German Operations Research Society 2014 (OR 2014), Aachen, September 2 - 5, 2014, Germany}, booktitle = {Proceedings of the International Annual Conference of the German Operations Research Society 2014 (OR 2014), Aachen, September 2 - 5, 2014, Germany}, subject = {Hierarchische Produktionsplanung}, language = {en} } @inproceedings{Herrmann, author = {Herrmann, Frank}, title = {Schrittweise Verbesserung des Realbetriebs einer Produktionslinie mit simultanem Produktionsfortschritt}, series = {Tagungsband zu "Wissenstransfer in der Wirtschaftsinformatik" im Rahmen der MKWI 2016; vom 09. bis 11. M{\"a}rz 2016 an der Technischen Universit{\"a}t Ilmenau in Th{\"u}ringen}, booktitle = {Tagungsband zu "Wissenstransfer in der Wirtschaftsinformatik" im Rahmen der MKWI 2016; vom 09. bis 11. M{\"a}rz 2016 an der Technischen Universit{\"a}t Ilmenau in Th{\"u}ringen}, pages = {19 -- 26}, language = {de} } @inproceedings{HerrmannManitz, author = {Herrmann, Frank and Manitz, Michael}, title = {Some remarks to the shape of Clearing Functions}, series = {Proceedings of the International Annual Conference of the German Operations Research Society 2015 (OR 2015) Wien, September 1 - 4}, booktitle = {Proceedings of the International Annual Conference of the German Operations Research Society 2015 (OR 2015) Wien, September 1 - 4}, language = {en} } @inproceedings{Herrmann, author = {Herrmann, Frank}, title = {Observations to Clearing Functions}, series = {Proceedings of the 28th EURO Conference on Operations Research, July 12 - 15, 2015, Glasgow, Scotland}, booktitle = {Proceedings of the 28th EURO Conference on Operations Research, July 12 - 15, 2015, Glasgow, Scotland}, language = {en} } @book{Herrmann, author = {Herrmann, Frank}, title = {{\"U}bungsbuch - Losbildung und Fertigungssteuerung}, publisher = {Springer Fachmedien}, address = {Wiesbaden}, isbn = {978-3-658-21567-5}, doi = {10.1007/978-3-658-21567-5}, pages = {IX, 341}, abstract = {Das Aufgabenbuch erg{\"a}nzt die in Lehrb{\"u}chern erl{\"a}uterten Verfahren der Losbildung und Fertigungssteuerung durch sehr detaillierte und pr{\"a}zise L{\"o}sungen. Losbildung und Fertigungssteuerung sind zentrale Kernelemente der operativen Produktionsplanung und -steuerung, insbesondere in kommerziell verf{\"u}gbaren IT-Systemen. Daher sind diese Verfahren integrale Bestandteile von Veranstaltungen zur Produktion und Logistik, Produktionsplanung und -steuerungsysteme, Supply Chain Management usw. in Bachelor- und Masterstudieng{\"a}ngen an Hochschulen und Universit{\"a}ten. Zu Beginn einer L{\"o}sung wird die verwendete Methodik soweit dargestellt, dass diese mit den in entsprechenden Vorlesungen gelehrten Inhalten ohne weitere Literatur verst{\"a}ndlich ist. Einige Themen, wie die Betrachtung von knappen Kapazit{\"a}ten und von schwankenden Durchlaufzeiten, gehen {\"u}ber den Inhalt von Standardlehrb{\"u}chern hinaus und d{\"u}rften auch f{\"u}r Doktoranden interessant sein.}, subject = {Produktionsplanung}, language = {de} } @book{HerrmannManitz, author = {Herrmann, Frank and Manitz, Michael}, title = {Materialbedarfsplanung und Ressourcenbelegungsplanung}, publisher = {Springer Gabler}, address = {Wiesbaden}, isbn = {978-3-658-12543-1}, doi = {10.1007/978-3-658-12543-1}, pages = {VII, 357}, subject = {Materialbedarf}, language = {de} } @article{Herrmann, author = {Herrmann, Frank}, title = {SIM-R/3: Softwaresystem zur Simulation der Regelung produktionslogistischer Prozesse durch das R/3-System der SAP AG}, series = {Wirtschaftsinformatik}, volume = {49}, journal = {Wirtschaftsinformatik}, number = {2}, doi = {10.1007/s11576-007-0034-5}, pages = {127 -- 133}, abstract = {State of the art in enterprises is the control of business processes by enterprise resource planning systems (ERP systems) such as the R/3 system of SAP AG. A typical task in the implementation phase of ERP systems consists in the choice of an appropriate lot sizing procedure and the setup of its parameters. The existing procedures do not deliver the best results for each business process. So, a business specific setup is required. Unfortunately, there is no knowledge of good parameter settings for typical business processes. Therefore, different parameter settings have to be tested out on real business processes over long periods (e. g. over several years). Of course, such an approach fails due to time restrictions. In addition, the literature argues that an automated software process — contrary to a physical process — is often never called in question or further optimized. An alternative offers a simulation of business processes which is controlled by an ERP system. In the laboratory of information science and production logistics (LIP) at the University of Applied Sciences, Regensburg, a pilot implementation of a system for simulating the control of production processes by the SAP R/3-System (SIM-R/3) was developed. SIM-R/3 allows such a simulation over long periods.}, subject = {Fertigungslogistik}, language = {de} } @inproceedings{HerrmannLangeAlmeder, author = {Herrmann, Frank and Lange, Frederick and Almeder, Christian}, title = {Capacity estimation based on clearing functions for the capacitated lot-sizing problem}, series = {Proceedings of the 5th International Workshop on Lot-Sizing, August 26th - 29th, 2014, Porto, Portugal}, booktitle = {Proceedings of the 5th International Workshop on Lot-Sizing, August 26th - 29th, 2014, Porto, Portugal}, abstract = {Single-stage capacitated lot-sizing problems (CLSP) are essential for manyplanning tasks in production systems. Due to the hierarchical planning approach, which is widely used in industrial practice and implemented in commercial enterprise resource planning as well as production planning and controlsystems, a subsequent scheduling is necessary to gain executable productionplans. Capacity consumption depends on many factors as, for example, systems workload, machine availability, or yield. Thus, a feasible and optimalsolution of the CLSP may lead to unplanned delays after sequencing and processing the orders on the shop floor. Using a so called clearing function (CF),which represents the relationship between the workload and the output of a production system, this capacity consumption in a CLSP is improved in various ways and tested on a real-world application.}, subject = {Hierarchische Produktionsplanung}, language = {en} } @inproceedings{Herrmann, author = {Herrmann, Frank}, title = {Genetic algorithm with simulation for scheduling of a flow shop with simultaneously loaded stations}, series = {Proceedings of the 28th EUROPEAN Conference on Modeling and Simulation, May 27th - 30th, 2014, Brescia, Italy}, booktitle = {Proceedings of the 28th EUROPEAN Conference on Modeling and Simulation, May 27th - 30th, 2014, Brescia, Italy}, 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. Proceedings 28th European Conference on Modelling and Simulation.}, subject = {Ablaufplanung}, language = {en} } @misc{Herrmann, author = {Herrmann, Frank}, title = {Simulation der Regelung von Unternehmensprozessen durch ein Enterprise Ressource Planning System am Beispiel von SAP R/3}, publisher = {Verlag der Hochschule Nordhausen}, language = {de} } @article{HerrmannTsakpinisWiedermann, author = {Herrmann, Frank and Tsakpinis, Athanassios and Wiedermann, Wolfgang}, title = {Praxisnahe Ausbildung an der FH-Regensburg mit dem Schwerpunkt SAP}, series = {Krcmar, Helmut; Rautenstrauch, Claus; Wittges, Holger und Schrader; Heino (Hrsg.): Wirtschaftsinformatik-Ausbildung mit SAP®-Software}, journal = {Krcmar, Helmut; Rautenstrauch, Claus; Wittges, Holger und Schrader; Heino (Hrsg.): Wirtschaftsinformatik-Ausbildung mit SAP®-Software}, publisher = {Josef Eul Verlag}, address = {Lohmar - K{\"o}ln}, subject = {Hochschulstudium}, language = {de} } @techreport{WohankaHelmstreitHerrmann, author = {Wohanka, Christian and Helmstreit, Herbert and Herrmann, Frank}, title = {Anbindung von Halbleiter Fertigungsautomaten an die SAP NetWeaver Plattform}, series = {Forschungsbericht der Hochschule Regensburg}, journal = {Forschungsbericht der Hochschule Regensburg}, publisher = {Weka Info Verlag}, address = {Regensburg}, pages = {51 -- 58}, subject = {Fertigung}, language = {de} } @inproceedings{Herrmann, author = {Herrmann, Frank}, title = {Simulated Determination and Usage of a Clearing Function for Leadtime Estimation}, series = {Proceedings of the 27th EURO Conference on Operations Research, July 13 - 18, 2014, Barcelona, Spain}, booktitle = {Proceedings of the 27th EURO Conference on Operations Research, July 13 - 18, 2014, Barcelona, Spain}, language = {en} } @techreport{HerrmannKreutz, author = {Herrmann, Frank and Kreutz, Michael}, title = {Simulations-System f{\"u}r das R/3-System (SIM-R/3) der SAP AG}, series = {Forschungsbericht der Hochschule Regensburg}, journal = {Forschungsbericht der Hochschule Regensburg}, publisher = {Weka Info Verlag}, address = {Regensburg}, pages = {46 -- 50}, subject = {SAP R/3}, language = {de} } @techreport{HeindlHerrmannJuraske, author = {Heindl, Martina and Herrmann, Frank and Juraske, Erich}, title = {Simulation von Einlagerstrategien}, series = {Forschungsbericht der Hochschule Regensburg}, journal = {Forschungsbericht der Hochschule Regensburg}, publisher = {Weka Info Verlag}, address = {Regensburg}, pages = {30 -- 39}, subject = {Lagerhaltung}, language = {de} } @article{Herrmann, author = {Herrmann, Frank}, title = {Scheduling a flow shop with simultaneously loaded stations: A real world application}, series = {Journal of Control Science and Engineering}, volume = {3}, journal = {Journal of Control Science and Engineering}, doi = {10.17265/2328-2231/2015.03.004}, pages = {147 -- 163}, abstract = {Companies use special designed flow shops, in order to satisfy specific demands. Products need to be transported (from one station to the next station) by a crane and the way of working of this crane excludes the intermediate storage (of a work piece). In addition, the way of working restricts the set of feasible schedules even more than the no-buffer restriction 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. A linear optimisation model is presented to provide a formal description of this NP-hard problem. It is also used to explain the performance of priority rule based heuristic solutions on small test problems. In detail, priority rules as well as a priority rule based branch and bound procedure are analysed; priority rules are regarded, because a priority rule is still the standard procedure for on-line scheduling in industrial practise. Out of successful priority rules in the literature the best one is identified by an extensive simulative investigation. An improved look-ahead is realised by a restricted search over all possible schedules.}, subject = {Fließfertigung}, language = {en} } @inproceedings{VitzthumHerrmann, author = {Vitzthum, Thorsten and Herrmann, Frank}, title = {Evidence of the Relevance of Master Production Scheduling for Hierarchical Production Planning.}, series = {Proceedings, 31st European Conference on Modelling and Simulation (ECMS) 2017, 23rd - May 26th, Budapest, Hungary}, booktitle = {Proceedings, 31st European Conference on Modelling and Simulation (ECMS) 2017, 23rd - May 26th, Budapest, Hungary}, isbn = {978-0-9932440-4-9}, doi = {10.7148/2017-0475}, abstract = {This paper deals with the significance of master production scheduling for hierarchical production planning. Production planning in a typical manufacturing organization is a sequence of complex decisions which depends on a number of factors, such as number of products, complexity of products, number of production sites, and number of work centres in each production site. The main idea in hierarchical production planning is to break down larger problems into smaller, more manageable sub problems. Starting with aggregate production planning, the benefits of using master production scheduling for material requirements planning will be conveyed. The main benefit of master production scheduling is more detailed planning. The production groups are thereby disaggregated into final products and the production site disaggregated into work centres. In order to plan capacities, resource profiles are used. By working with resource profiles production lead time data are taken into account to provide time-phased projections of the capacity requirements for each work centre (Vollmann et al. 2005). The case study will show that more accurate planning and consideration of production lead time through master production scheduling results in a demand program that can be realized without shortages or delays.}, subject = {Hierarchische Produktionsplanung}, language = {en} } @inproceedings{AmannHerrmannLutzetal., author = {Amann, Matthias and Herrmann, Frank and Lutz, Christian and Meier, Markus}, title = {Grad der Zerst{\"o}rung f{\"u}r eine lokale Suche bei einer taktgetriebenen Fließfertigung}, series = {Prozesse, Technologien, Anwendungen, Systeme und Management. Angewandte Forschung in der Wirtschaftsinformatik. Tagungsband zur 27. AKWI-Fachtagung vom 07. bis 10.09.2014 an der Oberbayerischen Technischen Hochschule Regensburg}, booktitle = {Prozesse, Technologien, Anwendungen, Systeme und Management. Angewandte Forschung in der Wirtschaftsinformatik. Tagungsband zur 27. AKWI-Fachtagung vom 07. bis 10.09.2014 an der Oberbayerischen Technischen Hochschule Regensburg}, editor = {Barton, Thomas and Erdlenbruch, Burkhard and Herrmann, Frank and M{\"u}ller, Christian}, publisher = {Verlag News \& Media}, address = {Berlin}, pages = {44 -- 54}, abstract = {Unternehmen produzieren oftmals viele Varianten f{\"u}r ein kleines Kundensegment und in kleinen St{\"u}ckzahlen auf sehr teuren Produktionsanlagen. Deren effiziente und effektive Nutzung erfordert eine m{\"o}glichst gute Planung der Belegung der Stationen mit Auftr{\"a}gen. Sehr wirkungsvoll bei Fertigungslinien sind lokale Suchverfahren. Sie erzielen ein lokales Optimum. Um ein globales Optimum zu erreichen, wird die Suche von einem anderen Punkt des Suchraums fortgesetzt. Dabei sollte kein willk{\"u}rlicher Punkt gew{\"a}hlt werden, sondern nur ein Teil des lokalen Optimums zerst{\"o}rt werden. Unterschiedlich starke Zerst{\"o}rungen werden f{\"u}r eine taktgetriebene Fließfertigung analysiert.}, subject = {Fließvertigung}, language = {de} } @inproceedings{LangeHerrmannClaus, author = {Lange, Frederick and Herrmann, Frank and Claus, Thorsten}, title = {Simulation based capacity estimation for a model of order release planning under the consideration of service levels}, series = {Proceedings of the 15th International Conference on Simulation in Production and Logistics, October 9 - 11, 2013, Paderborn, Germany}, booktitle = {Proceedings of the 15th International Conference on Simulation in Production and Logistics, October 9 - 11, 2013, Paderborn, Germany}, isbn = {978-0-9564944-6-7}, pages = {741 -- 747}, abstract = {Clearing Functions describe the nonlinear relationship between the orders which are in process and the output in capacitated productions systems under high utilization. These Clearing Function can be derived analytical by using steady-state queuing models or empirical by using simulation. We show how to estimate a Clearing Function for a single-level multi-product production system by using a simulation model. This non-linear Clearing Function is integrated into a model of order release planning. We extend this model to consider the uncertainty of the demand by using a Beta service level. We compare our model with an inventory management policy under different demand conditions.}, language = {en} } @inproceedings{Herrmann, author = {Herrmann, Frank}, title = {Simulation based priority rules for scheduling of a flow shop with simultaneously loaded stations}, series = {Proceedings of the 27th EUROPEAN Conference on Modeling and Simulation, May 27th - 30th, 2013, {\AA}lesund, Norway}, booktitle = {Proceedings of the 27th EUROPEAN Conference on Modeling and Simulation, May 27th - 30th, 2013, {\AA}lesund, Norway}, doi = {10.7148/2013-0775}, pages = {775 -- 781}, 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. Since this scheduling problem is integrated in the usual hierarchical planning, the tardiness is minimised. This NP-hard problem is solved by priority rules, because of the addressed dynamic environment (and a high number of jobs) at the company site. Due to the technological restrictions the real duration of a job is significantly larger than its net processing time. By a simulation of the processing time many priority rules are improved and some even significantly. With extensive simulations successful priority rules in the literature are analysed.}, subject = {Hierarchische Produktionsplanung}, language = {en} } @inproceedings{MetlickaDavendraHerrmannetal., author = {Metlicka, Magdalena and Davendra, Donald and Herrmann, Frank and Meier, Markus and Amann, Matthias}, title = {GPU accelerated NEH algorithm}, series = {Proceedings of the 2014 IEEE Symposium on Computational Intelligence in Production and Logistics Systems (CIPLS), Orlando, FL, 09.-12. Dec. 2014}, booktitle = {Proceedings of the 2014 IEEE Symposium on Computational Intelligence in Production and Logistics Systems (CIPLS), Orlando, FL, 09.-12. Dec. 2014}, doi = {10.1109/CIPLS.2014.7007169}, pages = {114 -- 119}, abstract = {This research aims to develop a CUDA accelerated NEH algorithm for the permutative flowshop scheduling problem with makespan criterion. NEH has been shown in the literature as the best constructive heuristic for this particular problem. The CUDA based NEH aims to speed up the processing time by utilising the GPU cores for parallel evaluation. In order to show the versatility and scalability of the CUDA based NEH, four new higher dimensional Taillard sets are generated. The experiments are conducted on the CPU and GPU and pairwise compared. Percentage relative difference and paired t-test both confirm that the GPU based NEH significantly improves on the execution time compared to the sequential CPU version for all the high dimensional problem instances.}, subject = {Flow-shop-Problem}, language = {en} } @inproceedings{Herrmann, author = {Herrmann, Frank}, title = {Perturbation in Local Search for Scheduling}, series = {Proceedings of the 29th EUROPEAN Conference on Modeling and Simulation, May 26th - 29th, 2015, Albena, Bulgaria}, booktitle = {Proceedings of the 29th EUROPEAN Conference on Modeling and Simulation, May 26th - 29th, 2015, Albena, Bulgaria}, doi = {10.7148/2015-0446}, pages = {7}, abstract = {Local search is an established meta heuristic for scheduling problems. To avoid of getting stucked in a local optimum, the achieved solution is destroyed. Usually, this is done randomly. Here, two problem specific procedures are suggested. One focuses on jobs with the highest difference between the actual processing time and the net processing time of the job and the other one tries to remove jobs which causes the highest idle time for themselves or other jobs. Comprehensive simulations of test scheduling problems as well as a real world application show that both problem specific procedures outperform a random procedure.}, subject = {Ablaufplanung}, language = {en} } @inproceedings{Herrmann, author = {Herrmann, Frank}, title = {Simulation of a stochastic model for master production scheduling in a hierarchical production planning system used in industrial practise to cope with demand uncertainty}, series = {Proceedings of the 26th EURO Conference on Operations Research, July 1 - 4, 2013, Rome, Italy}, booktitle = {Proceedings of the 26th EURO Conference on Operations Research, July 1 - 4, 2013, Rome, Italy}, abstract = {Demand uncertainty for master production scheduling is addressed over the last years by approaches of stochastic or robust optimisation. In this contribution a more detailed model is regarded. Instead of analysing the planning results by a cost function, and so implicitly assume that the plans are realizable, here the effects of robust master production scheduling are evaluated using a planning hierarchy that is common in industrial applications. The primary objective is to minimise tardiness of customer order deliveries, and the secondary objective is to minimise inventory of end products.}, language = {en} } @inproceedings{EnglbergerHerrmann, author = {Englberger, Julian and Herrmann, Frank}, title = {Estimating Capacity Load Factors in Master Production Scheduling by the use of Stochastic Optimization}, series = {Tagungsband zu der Tagung Logistikmanagement 2013, 10. - 13. Oktober 2013, Bremen, Deutschland}, booktitle = {Tagungsband zu der Tagung Logistikmanagement 2013, 10. - 13. Oktober 2013, Bremen, Deutschland}, subject = {Produktionsplanung}, language = {en} } @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} } @inproceedings{TrostClausTeichetal., author = {Trost, Marco and Claus, Thorsten and Teich, Enrico and Herrmann, Frank}, title = {Die soziale Dimension in der nachhaltigen hierarchischen Produktionsplanung - Stand der Forschung und Ans{\"a}tze zur Weiterentwicklung bestehender Planungsmodelle}, series = {Proceedings zur NAMA 2016 (NAMA 2016), October 5th - 7th, 2016, Dresden, Germany}, booktitle = {Proceedings zur NAMA 2016 (NAMA 2016), October 5th - 7th, 2016, Dresden, Germany}, pages = {4 S.}, abstract = {Bei der Produktionsplanung steht die Optimierung des Produktionssystems eines Unternehmens im Vordergrund. In diesem Beitrag wird auf Basis der hierarchischen Produktionsplanung aufgezeigt, dass neben {\"o}konomischen und {\"o}kologischen Aspekten insbesondere auch soziale Effekte bei der Entscheidungsfindung zu ber{\"u}cksichtigen sind. Dazu werden f{\"u}r die Hauptproduktionsprogrammplanung, die Losgr{\"o}ßenplanung und die Ressourcenbelegungsplanung dargelegt, welche sozialen Gr{\"o}ßen ber{\"u}cksichtigt werden k{\"o}nnen beziehungsweise bereits ber{\"u}cksichtigt sind. {\"U}berdies wird ein Modellansatz zur Hauptproduktionsprogrammplanung vorgestellt, der auf die Beseitigung identifizierter Forschungsl{\"u}cken abzielt.}, subject = {Hierarchische Produktionsplanung}, language = {de} }