Dr. rer. nat. Helmut Sedding

Work at ZHAW

Position

Senior Research Associate in Operations Research and Operations Management

Focus

Combinatorial optimization algorithms, in particular in scheduling

Network

Membership of networks

Swiss Operations Research Society

ORCID digital identifier

ORCID ID: 0000-0001-7359-6587

Awards

• IISE Transactions Award 2021 / best journal paper award in production and logistics
  The Institute of Industrial and Systems Engineers (IISE)
  04 / 2022
• IWA Prize 2016 / for a paper in the Journal of Scheduling
  Initiative of Science and Automotive Industry (IWA) and Volkswagen
  04 / 2016
• Best Product 2013 / as Senior Developer for ipoLog
  LogiMAT / International Trade Show for Intralogistics Solutions and Process Management
  03 / 2013

Recommendations

• Conference "AI-driven Decision Intelligence: Shaping Operations for Efficiency and Sustainability", June 26, 2024
• 4. International Workshop on Dynamic Scheduling Problems (IWDSP), June 5–6, 2023, Winterthur

Projects

• Customizable Injection Molded Products and Services with Interconnected Production Planning / Project leader / laufend
• Warehouse Operations / Project leader / abgeschlossen
• Calculation of an optimized freight configuration for aircraft / Project leader / abgeschlossen
• The Fourth International Workshop on Dynamic Scheduling Problems / Project leader / abgeschlossen
• Systematization of production processes for automatized scheduling in industrial SMEs / Project leader / abgeschlossen
• Self-Regulated Corrective Actions on GFRP Production Process / Team member / abgeschlossen
• Adaptive Production Planning Systems for Fast Decision Support / Deputy project leader / abgeschlossen

Publications

• Sedding, Helmut A.,

  2024.

  Mixed-model moving assembly line material placement optimization for a shorter time-dependent worker walking time.

  Journal of Scheduling.

  27(3), pp. 257-275.

  Available from: https://doi.org/10.1007/s10951-023-00787-5

• Sedding, Helmut A.,

  2020.

  Scheduling jobs with a V-shaped time-dependent processing time.

  Journal of Scheduling.

  23(6), pp. 751-768.

  Available from: https://doi.org/10.1007/s10951-020-00665-4

• Sedding, Helmut A.,

  2020.

  Line side placement for shorter assembly line worker paths.

  IISE Transactions.

  52(2), pp. 181-198.

  Available from: https://doi.org/10.1080/24725854.2018.1508929

• Jaehn, Florian; Sedding, Helmut,

  2016.

  Scheduling with time-dependent discrepancy times.

  Journal of Scheduling.

  19(6), pp. 737-757.

  Available from: https://doi.org/10.1007/s10951-016-0472-2

• Sedding, Helmut A.,

  2020.

  Time-dependent path scheduling : algorithmic minimization of walking time at the moving assembly line.

  Wiesbaden:

  Springer.

  ISBN 978-3-658-28414-5.

  Available from: https://doi.org/10.1007/978-3-658-28415-2

• Halman, Nir; Sedding, Helmut A.,

  2024.

  A faster FPTAS for makespan minimization with time-dependent agreeable V-shaped processing times [paper].

  In:

  Proceedings of the 19th International Workshop on Project Management and Scheduling.

  19th International Workshop on Project Management and Scheduling (PMS), Bern, Switzerland, 2-5 April 2024.

  University of Bern.

  Available from: https://doi.org/10.21256/zhaw-30440

• Sedding, Helmut; Seidel, Maxim,

  2023.

  Lot sizing and scheduling of injection molding machines with setup resources and demand uncertainty [paper].

  In:

  IWDSP 2023 : The Fourth International Workshop on Dynamic Scheduling Problems, Winterthur, Switzerland, 5-6 June 2023.

• Sedding, Helmut,

  2021.

  A lower bound for sequentially placing boxes at the moving assembly line to minimize walking time [paper].

  In:

  IWDSP 2021 : The Third International Workshop on Dynamic Scheduling Problems, Poznań, Poland, 5-7 July 2021.

• Sedding, Helmut,

  2021.

  An FPTAS for scheduling with piecewise-linear nonmonotonic convex time-dependent processing times and job-specific agreeable slopes [paper].

  In:

  Proceedings of the 17th International Workshop on Project Management and Scheduling.

  17th International Workshop on Project Management and Scheduling, Toulouse, 21-23 April 2021.

  EURO Working Group on Project Management and Scheduling.

  Available from: https://doi.org/10.21256/zhaw-22418

• Sedding, Helmut,

  2019.

  Scheduling with asymmetric piecewise-linear time-dependent processing times [paper].

  In:

  Proceedings of the 14th Workshop on Models and Algorithms for Planning and Scheduling Problems, MAPSP 2019.

  MAPSP 2019, Renesse, The Netherlands, 2-7 June 2019.

  Maastricht University.

  pp. 43-45.

• Drewek, Anna; Ordelt, Christian; Riahi, Nima; Sedding, Helmut,

  2024.

  100 Jahre Sollzeiten - Ein Konzept für die Zukunft?.

  Logistics Innovation.

  2024(1), pp. 10-13.

• Sedding, Helmut,

  2023.

  Rückblick auf den IWDSP 2023 an der ZHAW.

  ZHAW Industrie 4.0.

  Available from: https://blog.zhaw.ch/industrie4null/2023/11/13/rueckblick-auf-iwdsp-2023-an-der-zhaw/

• Sedding, Helmut,

  2021.

  IISE Transaction Award für Artikel zur algorithmischen Laufwege-Optimierung am Fliessband.

  ZHAW Industrie 4.0.

  Available from: https://blog.zhaw.ch/industrie4null/2021/06/01/iise-transaction-award-fuer-artikel-zur-algorithmischen-laufwege-optimierung-am-fliessband/

• Herrmann, Thomas; Sedding, Helmut,

  2019.

  Industrie 4.0 von morgen diskutiert.

  Technische Rundschau.

  111(10), pp. 74-75.

• Herrmann, Thomas; Sedding, Helmut,

  2019.

  Die Produktion von morgen.

  ZHAW Industrie 4.0.

  Available from: https://blog.zhaw.ch/industrie4null/2019/09/18/die-produktion-von-morgen/

• Sedding, Helmut,

  2019.

  Das digitale Produktions-Puzzle.

  Technische Rundschau.

  111(7), pp. 54-55.

  Available from: https://www.technische-rundschau.ch/archiv/2019/07/das-digitale-produktions-puzzle/

• Sedding, Helmut,

  2022.

  Scheduling with time-dependent processing time functions of V-shaped linear pieces.

  In:

  18th Swiss Operations Research Days (Swiss OR Days 2022), Winterthur, Switzerland, 2-3 June 2022.

• Sedding, Helmut,

  2021.

  Line side placement for shorter assembly line worker paths.

  In:

  IISE Annual Virtual Conference & Expo 2021, 23-25 May 2021.

Publications before appointment at the ZHAW

• Scheduling non-monotonous convex piecewise-linear time-dependent processing times, Proceedings of the 2nd International Workshop on Dynamic Scheduling Problems, 79–84, 2018.
• On the complexity of scheduling start time dependent asymmetric convex processing times, Proceedings of the 16th International Conference on Project Management and Scheduling, 209–212, 2018.
• Scheduling of Time-Dependent Asymmetric Nonmonotonic Processing Times permits an FPTAS, Proceedings of the 15th Cologne-Twente Workshop on Graphs & Combinatorial Optimization, 135–138, 2017.
• Box Placement as Time Dependent Scheduling To Reduce Automotive Assembly Line Worker Walk Times, Proceedings of the 13th Workshop on Models and Algorithms for Planning and Scheduling Problems, 92–94, 2017.
• Single Machine Scheduling with Nonmonotonic Piecewise Linear Time Dependent Processing Times, with F. Jaehn, Proceedings of the 14th International Conference on Project Management and Scheduling 2014, 222–225, 2014.
• Massively Parallel Multiclass Object Recognition, with Deger, F., Dammertz, H., Bouecke, J., Lensch, H., Proceedings of the 15th Vision, Modeling and Visualization Workshop, 251–257, 2010.

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