Publications

• Çelik, B.,  J. A. Schwarz und B.Tan (2023) "New product introductions with selection of unique and common features in monopoly markets”, Omega - The international Journal of Management Science, in press
• Schwarz, J. A. and B. Tan. (2021). "Optimal sales and production rollover strategies under capacity constraint". European Journal of Operational Research, 294 (2), 507-524.                                                 
• Weiss, S., J. A. Schwarz and R. Stolletz (2019).  „The Buffer Allocation Problem in production lines: Formulations, solution methods, and instances”, IISE Transactions, former IIE Transactions, 51 (5), 456-485.

• Schwarz, J. A., G. Selinka and R. Stolletz (2016).  "Performance analysis of time-dependent queueing systems: Survey and classification”, Omega - The international Journal of Management Science, 63, 170-189.

• Schwarz, J. A. and M. Epp (2016).  "Performance evaluation of a transportation type bulk queue with generally distributed inter-arrival times”, International  Journal of Production Research, 54 (20), 6251-6264.

• Göttlich, S., S. Kühn,  J. A. Schwarz and R. Stolletz (2016). "Approximations of time-dependent  unreliable flow lines with finite buffers”, Mathematical Methods of Operations Research, 83 (3), 295-323.

• Schwarz, J. A., J. Stoll and E. Özden (2015). "A general model for batch building processes under timeout and capacity rule”, Annals of Operations Research, 231 (1), 5-31.

• Daim, T. U., D. Lim, F. A. Gomez, J. Schwarz and S. Jovanovic (2014). "Storage technologies for wind power in the Columbia River Gorge”, International Journal of Sustainable Energy, 33 (1), 1-15.

• Schwarz, J. A. (2020). „Availability". In: S. Vajna (editor) Integrated Design Engineering, 2nd ed., 325-332, Springer.

• Schwarz, J. A. and R. Stolletz. (2018): "Management von Produktionsanläufen" (Management of production ramp-ups). In: H. Corsten, R. Gössinger  and  T. S. Spengler (editors): Handbuch Produktions- und Logistikmanagement in Wertschöpfungsnetzwerken, 539-552, De Gruyter Oldenbourg, Berlin (in German).

• Schwarz, J. A. and R. Stolletz (2013): "Warteschlangentheorie in der Betriebswirtschaftslehre" (Queueing theory and business administration). WiSt – Wirtschaftswissenschaftliches Studium 42 (5), 262–265 (in German).

2024

• Kunz, M. and Schwarz, J. A.: Efficient staffing for queueing systems with finite customer population and deadlines, 14th Workshop for Supply Chain Management and Production, Obergurgl, Austria, March 2024.
• Pelz, P. and Schwarz, J. A.: Stochastic modeling of patient-room assignments in hospital wards, 14th Workshop for Supply Chain Management and Production, Obergurgl, Austria, March 2024.

• Kunz, M. and Schwarz, J. A.: A new approach of staffing for queueing systems with a finite customer population and deadlines, Graduate Program in Operations Management Workshop, Ingolstadt, Germany, January 2024.

2023

• Kunz, M. and Schwarz, J. A.: Combining time-dependent and state-dependent staffing policies for queueing systems with a finite customer population, 10th Workshop on Queueing Theory, Obergurgl, Austria, December 2023.

• Schwarz, J. A.: A production planning model for non-stationary and stochastic yield in the semiconductor industry, Informs Applied Probability Society Conference 2023, Nancy, France, June 2023.
• Owens, N. and Schwarz, J. A.: A model and initial results for optimal product rollover strategies under uncertain supply, 32nd Workshop der Quantitativen Betriebswirtschaftslehre, Bad Windsheim, Germany, March 2023.

2022

• Kunz, M. and Schwarz, J. A.: Non-stationary queuing systems with a finite customer population, 9th Workshop on Queueing Theory, Obergurgl, Austria, December 2022.

• Schwarz, J. A.: Ramp-up with stochastic and non-stationary yield: Insights from a Newsvendor approach, OR 2022, Karlsruhe, Germany, September 2022.

• Owens, N. and Schwarz, J. A.: Modeling of product rollovers with stochastic production processes, Graduate Program in Operations Management Workshop, Ingolstadt, Germany, July 2022.
• Schwarz, J. A.,  F. Karaesmen and R. Stolletz: A newsvendor approach to production planning with stochastic and non-stationary yield, Conferences on Stochastic Models of Manufacturing and Service Operations 2022, Escandille, Autrans (Grenoble), France, June 2022.
• Schwarz, J. A.: Production planning with stochastic and non-stationary yield in the semiconductor industry, Brown Bag Seminar University of Passau - Recent developments in data science, Passau, Germany, June 2022.
• Schwarz, J. A.: AI Enhanced Digital Twins for Production Management: Requirements, Approaches, and Future Challenges, GFFT Insight: Wie werden Analytics und KI die Produktion verändern, online,  April 2022.
• Schwarz, J. A. and N. Owens: Product Rollover strategies under stochastic production processes, 12th Workshop for Supply Chain Management and Production, Obergurgl, Austria, March 2022.

2019

• Schwarz, J. A.: Rollover strategies under stochastic demand and production, 8th Workshop on Queueing Theory, Obergurgl, Austria, December 2019.
• Diefenbach, J. M., Schwarz, J. A., and R. Stolletz: Second thoughts on not so random sampling, 8th Workshop on Queueing Theory, Obergurgl, Austria, December 2019.
• Schwarz, J. A.: Optimal Rollover Strategies For Stochastic Demand and Production, INFORMS Annual Meeting, Seattle, USA, October 2019  (supported by DAAD).
• Schwarz, J. A., G. P Kiesmüller, and R. Stolletz: Optimal repair decisions in capacitated repair shops for flow lines, SMMSO 2019, Goslar, Germany, June 2019.
• Schnitzler, J. M., Schwarz, J. A. and R. Stolletz: Impact of stochastic yield with learning on start of production', Conferences on Stochastic Models of Manufacturing and Service Operations 2019, Goslar, Germany, June 2019.
• Schwarz, J. A.: Optimizing Sales and Production Rollover Strategies Under Stochastic Demand and Random Yield. POMS 2019 28th Annual Conference, Washington D.C., USA, May 2019 (supported by Julius-Paul-Stegler-Gedächtnis-Stiftung).
• Schwarz, J. A. and O. Karabag: Optimal rollover strategies under consideration of capacity constraints, Research seminar – TU Eindhoven, TU Eindhoven, Eindhoven, The Netherlands, April 2019.
• Schwarz J. A. and R. Stolletz: Impact of stochastic yield with learning on start of production.  11th Workshop for Supply Chain Management and Production, Obergurgl, Austria, March 2019.
• Schnitzler, J. M., Schwarz, J. A., and R. Stolletz: Impact of stochastic yield with learning on start of production. Productive4.0 Research Workshop, Istanbul, Turkey, January 2019.

2018

• Schwarz, J. A.  and R. Stolletz:  Optimal repair decisions in capacitated repair shops for flow lines: First results. 7th Workshop on Queueing Theory, Obergurgl, Austria, December 2018.
• Schnitzler, J. M., Schwarz, J. A., and R. Stolletz: First “random thoughts” on not so random sampling. 7th Workshop on Queueing Theory, Obergurgl, Austria, December 2018.
• Schwarz, J. A. and B. Tan: Sales and Operations Planning for Product Rollovers under Limited Capacity, INFORMS Annual Meeting, Phoenix, USA, November 2018 (supported by DAAD).
• Schwarz, J. A.: Analyzing the impact of finite capacity on sales and operations planning for product rollovers. EURO 2018, Valencia, Spain, July 2018.
• Schwarz, J. A.: Sales and operations planning for product rollovers with finite production capacities. Manufacturing and Service Operations Management 2018 Conference, Dallas, USA, July 2018 (supported by Julius-Paul-Stiegler-Gedächtnis-Stiftung).
• Schwarz, J. A. and R. Stolletz: Structural properties of time-dependent flow production systems. StochMod18, Lancaster, UK, June 2018.

• Schwarz, J. A.: Optimal sales and production rollover strategies under limited capacity, Research Seminar Koc University, Istanbul, Turkey,  June 2018.

• Schwarz, J. A.: Sales and operations planning for product rollovers: Structural insights. 28. Workshop der Quantitativen Betriebswirtschaftslehre, Hoechst, Germany, March 2018.
• Schwarz, J. A.: Sales and operations planning for product rollovers, Research seminar – Mercator School of Management, University of Duisburg-Essen, Duisburg, Germany, January 2018.

2017

• Schwarz, J. A. and R. Stolletz: Minimizing work-in-process inventory in time-dependent flow lines by proactive Kanban control, Automotive Workshop, Brunswick, September 2017.
• Schwarz, J. A. and R. Stolletz: Minimizing work-in-process inventory in dynamic Kanban systems. OR2017, Berlin, September 2017.
• Schwarz, J. A. and R. Stolletz: Structural properties of flow production with time-dependent processing rates. INFORMS Applied Probability Society Conference 2017, Evanston, Illinois, USA, July 2017.
• Schwarz, J. A. and Stolletz, R.: Numerical comparison of Kanban mechanisms for production systems with time-dependent processing times. SMMSO 2017, Acaya (Lecce), Italy, June 2017 (supported by Julius-Paul-Stiegler-Gedächtnis-Stiftung).
• Schwarz, J. A.: Product rollovers with finite production capacities: first results. 9. Workshop für Supply Chain Management und Produktion, Obergurgl, Austria, March 2017.

2016

• Schwarz, J. A. and R. Stolletz: Structural properties of flow production lines for stationary, transient and time-dependent settings. 5th Workshop on Queueing Theory, Obergurgl, Austria, December 2016.
• Schwarz, J. A. and R. Stolletz: Minimizing work-in-process inventory in stochastic and time-dependent flow lines. OR 2016, Hamburg, Germany, September 2016.
• Schwarz, J. A. and R. Stolletz: A proactive approach to Kanban allocation in stochastic and time-dependent flow lines. POMS 2016 27th Annual Conference, Orlando, USA, May 2016 (supported by DAAD).
• Schwarz, J. A. and R. Stolletz: BAPLib – A library and classification of Buffer Allocation Problem instances in serial flow lines. 8. Forschungs­seminar für Supply Chain Management und Produktion, Obergurgl, Austria, March 2016.

2015

• Becker, A., J. A. Schwarz, and R. Stolletz: Stochastic influences on ramp-up planning. 4th Workshop on Queueing Theory, Obergurgl, Austria, December 2015.
• Rakhee, J. A. Schwarz, and R. Stolletz: Time-dependent Channel Reservation Scheme for Handoff Calls in a Cellular Mobile Network. 4th Workshop on Queueing Theory, Obergurgl, Austria, December 2015. 
• J. A. Schwarz and R. Stolletz: Structural properties in stochastic and time-dependent flow lines. 4th Workshop on Queueing Theory, Obergurgl, Austria, December 2015.
• Schwarz, J. A. and R. Stolletz: The allocation of Kanban cards in stochastic and time-dependent production systems. OR 2015, Vienna, Austria, September 2015 (supported by IPID4all funds of the DAAD).
• Schwarz, J. A. and R. Stolletz: Performance analysis of time-dependent queueing systems: Survey and classification. 18th INFORMS Applied Probability Society Conference, Istanbul, Turkey, July 2015 (supported by IPID4all funds of the DAAD).
• Weiss, S., J. A. Schwarz, and R. Stolletz: Buffer Allocation Problems for stochastic flow lines with unreliable machines. SMMSO 2015, Volos, Greece, June 2015 (supported by Julius-Paul-Stiegler-Gedächtnis-Stiftung).

2014

• Schwarz, J. A. and R. Stolletz: Performance analysis of time-dependent queueing systems: A survey and classification. 3rd Workshop on Queueing Theory, Obergurgl, Austria, December 2014.
• Schwarz, J. A.: A classification of approaches to the performance evaluation of time-dependent queues. 8th Young European Queueing Theorists Workshop, Eindhoven, Netherlands, November 2014 (invited talk).
• Schwarz, J. A. and R. Stolletz: Setting Kanban cards for non-stationary and stochastic flow lines via sampling. OR 56 – 56th Conference of the UK Operational Research Society, London, UK, September 2014 (supported by Julius-Paul-Stiegler-Gedächtnis-Stiftung).
• Schwarz, J. A. and R. Stolletz: Setting Kanban cards for production systems under non-stationary and stochastic operating environments. OR 2014, Aachen, September 2014.
• Schwarz, J. A., G. Selinka, and R. Stolletz: Analytical performance evaluation of time-dependent queues: A classification.  StochMod14, Mannheim, July 2014.

2013

• Schwarz, J. A. and R. Stolletz: Setting Kanban cards for production systems under non-stationary and stochastic operating environments. 2nd Workshop on Queueing Theory, Obergurgl, Austria, December 2013.
• Schwarz, J. A. and R. Stolletz: A sampling approach for the analysis of time-dependent stochastic flow lines. SMMSO 2013, Kloster Seeon, May 2013.
• Schwarz, J. A. and R. Stolletz: Evaluation and optimization of buffer allocations in time-dependent stochastic flow lines. 23. Workshop für Quantitative Betriebswirtschaftslehre, Altleiningen, February 2013.           

2012

• Schwarz, J. A. and R. Stolletz: Time-dependent stochastic flow lines. Workshop on Queueing Theory, Obergurgl, Austria, December 2012.
• Schwarz, J. A.: A discrete time approach to analyze the behavior of Milkrun supplied inventories. OR 2012, Hanover, September 2012.