Sprechstunden nach Vereinbarung
In meiner Forschung beschäftige ich mich mit der mathematischen Optimierung und systemdynamischen Modellierung von Fragestellungen aus Wissenschaft und Praxis. Darüber hinaus arbeite ich an der Weiterentwicklung von gemischt-ganzzahliger Lösungssoftware.
Semester | Fach |
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WS/SS | Betreuung studentischer Arbeiten |
Hansknecht, C.; Joormann, I.; Korn, B.; Morscheck, F.; Stiller, S. (2022): Feeder routing for air-to-air-refueling, in: European Journal of Operational Research, 2022.
Hansknecht, C.; Joormann, I.; Stiller, S. (2021): Dynamic Shortest Paths Methods for the Time-Dependent TSP, in: Algorithms, 14 (1), MDPI.
Hojny, C.; Joormann, I.; Lüthen, H; Schmidt, M. (2020): Mixed-Integer Programming Techniques for the Connected Max-k-Cut Problem, in: Mathematical Programming Computation, Springer, pp. 1–58.
Joormann, I.; Pfetsch, M.E. (2018): Complexity of Minimum Irreducible Infeasible Subsystem Covers for Flow Networks, in: Discrete Applied Mathematics, 244, Elsevier, pp. 124–142.
Schmidt, M.; Aßmann, D.; Burlacu, R.; Humpola, J.; Joormann, I.; Kanelakis, N.; Koch, T.; Ouchrif, D.; Pfetsch, M.E.; Schewe, L. (2017): Gaslib - A Library of Gas Network Instances, in: Data, 2 (4), Multidisciplinary Digital Publishing Institute.
Joormann, I.; Orlin, J.B.; Pfetsch, M.E. (2016): A characterization of irreducible infeasible subsystems in flow networks, in: Network, 68 (2), Wiley Online Library, pp. 121–129.
Joormann, I. (2015): Analyzing Infeasible Flow Networks, Dr. Hut Verlag, TU Darmstadt, Ph.D. Thesis.
Hiller, B.; Koch, T.; Pfetsch, M.E.; Geißler, B.; Henrion, R.; Joormann, I.; Martin, A.; Morsi, A.; Römisch, W.; Schewe, L.; Schmidt, M; Schultz, R.; Steinbach, M. (2021): Capacity Evaluation for Large-Scale Gas Networks, in: Bock, H.G.; Küfer, K.H.; Maass, P.; Schulz, V. (ed.): German Success Stories in Industrial Mathematics, Springer International Publishing, pp. 23–28.
Joormann, I.; Schmidt, M.; Steinbach, M.C.; Willert, B.M. (2015): What does "feasible" mean?, in: Koch, T.; Hiller, B.; Pfetsch, M.E.; Schewe, L. (ed.): Evaluating gas network capacities, MOS-SIAM Series on Optimization, SIAM, pp. 211–232.
Talwar, C.; Joormann, I.; Ginster, R. (2021): A System Dynamics Model of the Air Transport System – Data set.
Talwar, C.; Joormann, I.; Ginster, R.; Spengler, T. S. (2021): A System Dynamics Model of the Air Transport System – Model description.
Hansknecht, C.; Joormann, I.; Korn, B.; Morscheck, F.; Stiller, S. (2019): Feeder Routing for Air-to-Air Refueling Operations, Optimization Online.
Hansknecht, C.; Joormann, I.; Stiller, S. (2018): Cuts, Primal Heuristics, and Learning to Branch for the Time-Dependent Traveling Salesman Problem, arXiv.
Hojny, C.; Joormann, I.; Lüthen, H; Schmidt, M. (2018): Mixed-Integer Programming Techniques for the Connected Max-k-Cut Problem, Optimization Online.
Talwar, C.; Joormann, I.; Ginster, R.; Spengler, T. S. (2021): How much can electric aircraft contribute to reaching the Flightpath 2050 CO2 emissions goal? - A system dynamics approach for European short haul flights, in: International Conference on Operations Research 2021, Bern, Switzerland (virtual), 2021-09-01.