Office hours:

Wednesday, 15:00h-16:00h, after talking to Office.

Contact:
Room SO 230
Schloss Schneckenhof Ost (SO)
68131 Mannheim

Phone: 0621 - 181-1577
Fax: 0621 - 181-1579
E-mail: Stolletz(at)bwl.uni-mannheim.de

Profile

Raik Stolletz is Professor and  holds the Chair of Production Management at the University of Mannheim since December 2010. In his previous positions he served as an Associate Professor for Operations Management at the Department of Management Engineering, Technical University of Denmark, Denmark and as an Assistant Professor at the Leibniz University at Hannover, Germany. He obtained his PhD from the Technical University of Clausthal and studied Mathematics, Business Administration, and Computer Science at the Technical University of Berlin.

Professor Stolletz taught courses in advanced planning, production and operations management, and operations research in Bachelor, Master, and PhD programs.

His main research interest is in production and operations management. Current research projects focus on quantitative decision support in the design and management of manufacturing and service systems. This includes the optimization of operations scheduling, the performance analysis of dynamic and stochastic systems, the analysis and optimization of flow lines, and airport operations management. His research has been published in leading international academic journals, including Production and Operations Management, OR Spectrum, European Journal of Operational Research, and Annals of Operations Research.

Publications

Published Books

Helber, S., R. Stolletz (2004): "Call Center Management in der Praxis. Strukturen und Prozesse betriebswirtschaftlich optimieren." ("Applied Call Center Management. Managerial Optimization of System Congurations and Processes.") (in German), Springer, Berlin et al.

Stolletz, R. (2003): "Performance Analysis and Optimization of Inbound Call Centers", Lecture Notes in Economics and Mathematical Systems, Vol. 528, Springer, Berlin et al.

Refereed Publications

Stolletz, R., M. Manitz (2012): The Impact of a Waiting-Time Threshold in Overflow Systems with Impatient Customers. Forthcoming in OMEGA. The International Journal of Management Science DOI: 10.1016/j.omega.2012.05.001

Stolletz, R., Lagershausen, S. (2012): Time-dependent performance evaluation for loss-waiting queues with arbitrary distributions. Forthcoming in International Journal of Production Research

Stolletz, R., Brunner, J.O. (2012): Fair optimization of fortnightly physician schedules with flexible shifts. European Journal of Operational Research 219 (2012),
pp. 622-629

Roubos, A., G. Koole, and R. Stolletz (2012): Service level variability of inbound call centers. Forthcoming in Manufacturing & Service Operations Management doi: 10.1287/msom.1120.038

Stolletz, R. (2011): Analysis of Passenger Queues at Airport Terminals. Research in Transportation Business & Management 1 (2011) pp. 144-149

Helber, S., K. Schimmelpfeng, R. Stolletz, and S. Lagershausen (2011): Using linear programming to analyze and optimize stochastic flow lines. Annals of Operations Research 182, 193-211.

Helber, S., K. Schimmelpfeng, and R. Stolletz (2011): Setting inventory levels of CONWIP lines via linear programming. Business Research 4 (1), 98-115.

Barth, W., M. Manitz, and R. Stolletz (2010): Analysis of Two-Level Support Systems with Time-Dependent Overflow -- A Banking Application. Production and Operations Management 19, 757-768.

Stolletz, R. (2010): Operational workforce planning for check-in counters at airports. Transportation Research Part E: Logistics and Transportation Review 46, 414-425.

Helber, S., K. Schimmelpfeng, and R. Stolletz (2009): First results on setting inventory levels of CONWIP flow lines via linear programming. In: Tolio, T. (Editor): Seventh International Conference on Stochastic Models of Manufacturing and Service Operations, Italy June 7-12, 2009, 208-216.

Stolletz, R. (2009): A binary programming formulation for the tour scheduling problem with flexible contracts. INFORMS International Conference on Service Science Proceedings, Hong Kong, August, 2009.

Stolletz, R., L. Stolletz (2008): Linearisierungsverfahren für Standortplanungsprobleme mit nichtlinearen Transportkosten. (Linearization Methods for Facility Location Problems with non-linear Transportation Costs.) Zeitschrift für Planung & Unternehmenssteuerung 19 (3), 261-280 (in German).

Stolletz, R. (2008): Approximation of the non-stationary M(t)/M(t)/c(t)-queue using stationary queueing models: The stationary backlog-carryover approach. European Journal of Operational Research 190 (2), 478-493.

Stolletz, R. (2008): Non-stationary delay analysis of runway systems. OR Spectrum 30 (1), 191-213.

Helber, S., R. Stolletz, and S. Bothe (2005): Erfolgszielorientierte Agentenallokation in In-bound Call-Centern. (Profit-maximizing Agent Staffng in Inbound Call Centers.) Zeitschrift für betriebswirtschaftliche Forschung 57 (1), 3-32 (in German).

Stolletz, R., S. Helber (2004): Performance analysis of an inbound call center with skills-based routing. OR Spectrum 26 (3), 331-352.

Helber, S., R. Stolletz (2004): Grundlagen und Probleme der Personalbedarfsermittlung in Inbound-Call Centern. (Principles and Problems of Staff Requirement Planning in Inbound Call Centers.) Zeitschrift für Betriebswirtschaft, Ergänzungsheft 1/2004, 67-88 (in German).

Stolletz, R. (2003): Performance Analysis of M-designed Inbound Call Centers, in: Operations Research Proceedings 2003, 9-16

Other Publications

Stolletz, R., H. Pingel and C. Heerig (2009): Szenariobasierte Ersatzteilbestandsplanung bei unsicherem Verschleiß. (Scenario-based spare part planning with uncertain times to failures) Zeitschrift für wirtschaftlichen Fabrikbetrieb 104 (3), 170-173.

Stolletz, R. (2008): Paragraph "Warteschlangentheorie." (Queueing theory.) In Corsten, H. and R. Gössinger (editors): Lexikon der Betriebswirtschaftslehre, 892-894, 5. edition, Oldenbourg.

Working paper

Briskorn, D., R. Stolletz (2011): Aircraft landing problems with aircraft classes.