TY - RPRT A1 - Stieber, Anke A1 - Fügenschuh, Armin ED - Fügenschuh, Armin T1 - Dealing with Time in the Multiple Traveling Salesmen Problem with Moving Targets Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:co1-opus4-48245 SN - 2627-6100 CY - Cottbus ER - TY - RPRT A1 - Fügenschuh, Armin A1 - Gnegel, Fabian T1 - An Iterative Graph Expansion Approach for the Scheduling and Routing of Airplanes Y1 - 2019 U6 - https://doi.org/10.26127/BTUOpen-4806 CY - Cottbus ER - TY - RPRT A1 - Fügenschuh, Armin A1 - Craparo, Emily M. ED - Fügenschuh, Armin T1 - Coverage Maximization for Multistatic Sonar Location under Budget Restrictions Y1 - 2017 UR - https://www.researchgate.net/publication/320016383_Coverage_Maximization_for_Multistatic_Sonar_Location_under_Budget_Restrictions SN - 2199-1928 SN - 2199-1936 PB - Helmut-Schmidt-Universität / Universität der Bundeswehr CY - Hamburg ER - TY - GEN A1 - Dósa, György A1 - Fügenschuh, Armin A1 - Tan, Zhiyi A1 - Tuza, Zsolt A1 - Węsek, Krzysztof T1 - Tight lower bounds for semi-online scheduling on two uniform machines with known optimum T2 - Central European Journal of Operations Research Y1 - 2019 SN - 1613-9178 SN - 1435-246X VL - 27 SP - 1107 EP - 1130 ER - TY - GEN A1 - Gnegel, Fabian A1 - Fügenschuh, Armin T1 - A Time-Flow Approach for Scheduling and Routing of Fly-in Safari Airplanes T2 - Operations Research Proceedings 2018 : Selected Papers of the Annual International Conference of the German Operations Research Society (GOR), Brussels, Belgium, September 12-14, 2018 Y1 - 2018 SN - 978-3-030-18499-5 SN - 978-3-030-18500-8 U6 - https://doi.org/10.1007/978-3-030-18500-8_42 SN - 0721-5924 SN - 2197-9294 SP - 339 EP - 345 PB - Springer CY - Cham ER - TY - GEN A1 - Fügenschuh, Armin A1 - Craparo, Emily M. A1 - Karatas, Mumtaz A1 - Buttrey, Samuel E. T1 - Solving Multistatic Sonar Location Problems with Mixed-Integer Programming T2 - Optimization and Engineering Y1 - 2020 U6 - https://doi.org/10.1007/s11081-019-09445-2 VL - 21 IS - 1 SP - 273 EP - 303 ER - TY - GEN A1 - Fügenschuh, Armin T1 - Solving a School Bus Scheduling Problem with Integer Programming T2 - European Journal of Operational Research Y1 - 2009 U6 - https://doi.org/10.1016/j.ejor.2007.10.055 SN - 0377-2217 VL - 193 IS - 3 SP - 867 EP - 884 ER - TY - GEN A1 - Fügenschuh, Armin A1 - Homfeld, Henning A1 - Huck, Andreas A1 - Martin, Alexander A1 - Yuan, Zhi T1 - Scheduling Locomotives and Car Transfers in Freight Transport T2 - Transportation Science Y1 - 2008 U6 - https://doi.org/10.1287/trsc.1080.0248 SN - 1526-5447 SN - 0041-1655 VL - 42 IS - 4 SP - 478 EP - 491 ER - TY - GEN A1 - Gnegel, Fabian A1 - Fügenschuh, Armin T1 - An Iterative Graph Expansion Approach for the Scheduling and Routing of Airplanes T2 - Computers & Operations Research Y1 - 2020 SN - 0305-0548 VL - Computers & Operations Research IS - 114 ER - TY - GEN A1 - Fügenschuh, Armin A1 - Homfeld, Henning A1 - Schülldorf, Hanno T1 - Single Car Routing in Rail Freight Transport T2 - Transportation Science Y1 - 2015 U6 - https://doi.org/10.1287/trsc.2013.0486 SN - 1526-5447 SN - 0041-1655 VL - 49 IS - 1 SP - 130 EP - 148 ER - TY - GEN A1 - Fügenschuh, Armin A1 - Junosza-Szaniawski, Konstanty A1 - Lonc, Zbigniew T1 - Exact and Approximation Algorithms for a Soft Rectangle Packing Problem T2 - Optimization Y1 - 2014 U6 - https://doi.org/10.1080/02331934.2012.728217 SN - 1029-4945 SN - 0233-1934 VL - 63 IS - 11 SP - 1637 EP - 1663 ER - TY - GEN A1 - Fügenschuh, Armin A1 - Geißler, Björn A1 - Gollmer, Ralf A1 - Hayn, Christine A1 - Henrion, René A1 - Hiller, Benjamin A1 - Humpola, Jesco A1 - Koch, Thorsten A1 - Lehmann, Thomas A1 - Martin, Alexander A1 - Mirkov, Radoslava A1 - Morsi, Antonio A1 - Rövekamp, Jessica A1 - Schewe, Lars A1 - Schmidt, Martin A1 - Schultz, Rüdiger A1 - Schwarz, Robert A1 - Schweiger, Jonas A1 - Stangl, Claudia A1 - Steinbach, Marc C. A1 - Willert, Bernhard M. T1 - Mathematical Optimization for Challenging Network Planning Problems in Un- bundled Liberalized Gas Markets T2 - Energy Systems Y1 - 2014 U6 - https://doi.org/10.1007/s12667-013-0099-8 SN - 1868-3975 SN - 1868-3967 VL - 5 IS - 3 SP - 449 EP - 473 ER - TY - GEN A1 - Defterli, Özlem A1 - Fügenschuh, Armin A1 - Weber, Gerhard Wilhelm T1 - Modern Tools for the Time-Discrete Dynamics and Optimization of Gene- Environment Networks T2 - Communications in Nonlinear Science and Numerical Simulation Y1 - 2011 U6 - https://doi.org/10.1016/j.cnsns.2011.03.003 SN - 1007-5704 VL - 16 IS - 12 SP - 4768 EP - 4779 ER - TY - GEN A1 - Fügenschuh, Armin T1 - A set partitioning reformulation of a school bus scheduling problem T2 - Journal of Scheduling Y1 - 2011 U6 - https://doi.org/10.1007/s10951-011-0234-0 SN - 1099-1425 SN - 1094-6136 VL - 14 SP - 307 EP - 318 ER - TY - GEN A1 - Frank, Martin A1 - Fügenschuh, Armin A1 - Herty, Michael A1 - Schewe, Lars T1 - The Coolest Path Problem T2 - Networks & Heterogeneous Media Y1 - 2010 U6 - https://doi.org/10.3934/nhm.2010.5.143 SN - 1438-0064 VL - 5 IS - 1 SP - 143 EP - 162 ER - TY - GEN A1 - Fügenschuh, Armin A1 - Göttlich, Simone A1 - Kirchner, Claus A1 - Herty, Michael A1 - Martin, Alexander T1 - Efficient Reformulation and Solution of a Nonlinear PDE-Controlled Flow Network Model T2 - Computing Y1 - 2009 U6 - https://doi.org/10.1007/s00607-009-0038-7 SN - 0010-485X SN - 1436-5057 VL - 85 IS - 3 SP - 245 EP - 265 ER - TY - GEN A1 - Dittel, Agnes A1 - Fügenschuh, Armin A1 - Göttlich, Simone A1 - Herty, Michael T1 - MIP Presolve Techniques for a PDE-based Supply Chain Model T2 - Optimization Methods and Software Y1 - 2009 U6 - https://doi.org/10.1080/10556780902752595 SN - 1029-4937 SN - 1055-6788 VL - 24 IS - 3 SP - 427 EP - 445 ER - TY - GEN A1 - Bambach, Markus A1 - Fügenschuh, Armin A1 - Buhl, Johannes A1 - Jensch, Felix A1 - Schmidt, Johannes ED - Bambach, Markus T1 - Mathematical Modeling and Optimization for Powder-Based Additive Manufacturing T2 - Procedia Manufacturing; Part of Special issue: 23rd International Conference on Material Forming Y1 - 2020 U6 - https://doi.org/10.1016/j.promfg.2020.04.158 SN - 2351-9789 VL - 47 SP - 1159 EP - 1163 ER - TY - GEN A1 - Bähr, Martin A1 - Buhl, Johannes A1 - Radow, Georg A1 - Schmidt, Johannes A1 - Bambach, Markus A1 - Breuß, Michael A1 - Fügenschuh, Armin T1 - Stable honeycomb structures and temperature based trajectory optimization for wire-arc additive manufacturing T2 - Optimization and Engineering N2 - We consider two mathematical problems that are connected and occur in the layer-wise production process of a workpiece using wire-arc additive manufacturing. As the first task, we consider the automatic construction of a honeycomb structure, given the boundary of a shape of interest. In doing this, we employ Lloyd’s algorithm in two different realizations. For computing the incorporated Voronoi tesselation we consider the use of a Delaunay triangulation or alternatively, the eikonal equation. We compare and modify these approaches with the aim of combining their respective advantages. Then in the second task, to find an optimal tool path guaranteeing minimal production time and high quality of the workpiece, a mixed-integer linear programming problem is derived. The model takes thermal conduction and radiation during the process into account and aims to minimize temperature gradients inside the material. Its solvability for standard mixed-integer solvers is demonstrated on several test-instances. The results are compared with manufactured workpieces. KW - Mixed-integer linear programming KW - Geometric optimization KW - Eikonal equation KW - Heat transmission KW - Additive manufacturing KW - Centroidal Voronoi tesselation Y1 - 2021 U6 - https://doi.org/10.1007/s11081-020-09552-5 SN - 1573-2924 VL - 22 IS - 2 SP - 913 EP - 974 ER - TY - GEN A1 - Khan, Mohammad Faisal A1 - Hasan, Md. Gulzarul A1 - Quddoos, Abdul A1 - Fügenschuh, Armin T1 - Goal Programming Models with Linear and Exponential Fuzzy Preference Relations T2 - Symmetry Y1 - 2020 U6 - https://doi.org/10.3390/sym12060934 SN - 2073-8994 VL - 12 IS - 6 ER - TY - GEN A1 - Ali, Irfan A1 - Fügenschuh, Armin A1 - Gupta, Srikant A1 - Modibbo, Umar Muhammad T1 - The LR-Type Fuzzy Multi-Objective Vendor Selection Problem in Supply Chain Management T2 - Mathematics Y1 - 2020 U6 - https://doi.org/10.3390/math8091621 SN - 2227-7390 VL - 8 IS - 9 ER - TY - GEN A1 - Singham, Dashi I. A1 - Cai, Wenbo A1 - Fügenschuh, Armin T1 - Flexible contracting with heterogeneous agents and stochastic demand T2 - International Journal of Production Economics Y1 - 2021 U6 - https://doi.org/10.1016/j.ijpe.2020.107840 SN - 0925-5273 VL - 231 ER - TY - GEN A1 - Auer, Peter A1 - Dósa, György A1 - Dulai, Tibor A1 - Fügenschuh, Armin A1 - Näser, Peggy A1 - Ortner, Ronald A1 - Werner-Stark, Ágnes T1 - A new heuristic and an exact approach for a production planning problem T2 - Central European Journal of Operations Research Y1 - 2020 U6 - https://doi.org/10.1007/s10100-020-00689-3 SN - 1613-9178 ER - TY - GEN A1 - Zazai, M. Fawad A1 - Fügenschuh, Armin T1 - Computing the trajectories for the development of optimal routes T2 - Optimization and Engineering Y1 - 2020 U6 - https://doi.org/10.1007/s11081-020-09569-w SN - 1573-2924 VL - Vol. 22 (2021) IS - 2 SP - 975 EP - 999 ER - TY - GEN A1 - Moreno, Liana Amaya A1 - Omidi, Maryam A1 - Wurlitzer, Marcus A1 - Luthringer, Bérengère A1 - Helmholz, Heike A1 - Schlüter, Hartmut A1 - Willumeit-Römer, Regine A1 - Fügenschuh, Armin T1 - Understanding Protein Networks Using Vester's Sensitivity Model T2 - IEEE/ACM Transactions on Computational Biology and Bioinformatics Y1 - 2020 U6 - https://doi.org/10.1109/TCBB.2018.2885757 SN - 1545-5963 SN - 1557-9964 VL - 17 IS - 4 SP - 1440 EP - 1450 ER - TY - GEN A1 - Gnegel, Fabian A1 - Fügenschuh, Armin A1 - Hagel, Michael A1 - Leyffer, Sven A1 - Stiemer, Marcus T1 - A Solution Framework for Linear PDE-Constrained Mixed-Integer Problems T2 - Mathematical Programming Y1 - 2021 U6 - https://doi.org/10.1007/s10107-021-01626-1 SN - 0025-5610 SN - 1436-4646 VL - 188 IS - 2 SP - 695 EP - 728 ER - TY - GEN A1 - Fügenschuh, Armin A1 - Müllenstedt, Daniel A1 - Schmdit, Johannes T1 - Flight Planning for Unmanned Aerial Vehicles T2 - Military Operations Research Y1 - 2021 SN - 1082-5983 SN - 2163-2758 VL - 26 IS - 3 SP - 49 EP - 71 ER - TY - GEN A1 - Johannsmann, Leonie M. A1 - Craparo, Emily M. A1 - Dieken, Thor L. A1 - Fügenschuh, Armin A1 - Seitner, Björn O. T1 - Stochastic mixed-integer programming for a spare parts inventory management problem T2 - Computers & Operations Research Y1 - 2022 U6 - https://doi.org/10.1016/j.cor.2021.105568 SN - 1873-765X SN - 0305-0548 VL - 138 SP - 1 EP - 10 ER - TY - GEN A1 - Dee, Robin A1 - Fügenschuh, Armin A1 - Kaimakamis, George T1 - The Unit Re-balancing Problem T2 - Proceedings of the 6th IMA Conference on Mathematics in Defence and Security, Tuesday March 30, 2021 - Wednesday March 31, 2021 Y1 - 2021 UR - https://ima.org.uk/12970/6th-ima-conference-on-mathematics-in-defence-and-security/ SP - 1 EP - 10 ER - TY - BOOK A1 - Schmidt, Johannes A1 - Fügenschuh, Armin T1 - A two-time-level model for mission and flight planning of an inhomogeneous fleet of unmanned aerial vehicles Y1 - 2021 U6 - https://doi.org/10.26127/BTUOpen-5461 CY - Cottbus ER - TY - BOOK A1 - Gnegel, Fabian A1 - Schaudt, Stefan A1 - Clausen, Uwe A1 - Fügenschuh, Armin T1 - A 2D layered graph approach for scheduling delivery robots Y1 - 2021 U6 - https://doi.org/10.26127/BTUOpen-5493 CY - Cottbus ER - TY - BOOK A1 - Gnegel, Fabian A1 - Fügenschuh, Armin A1 - Hagel, Michael A1 - Leyffer, Sven A1 - Stiemer, Marcus T1 - A solution framework for linear PDE-constrained mixed-integer problems Y1 - 2019 U6 - https://doi.org/10.26127/BTUOpen-5045 CY - Cottbus ER - TY - BOOK A1 - Gnegel, Fabian A1 - Fügenschuh, Armin T1 - Branch-and-refine for solving time-dependent problems Y1 - 2020 U6 - https://doi.org/10.26127/BTUOpen-5199 CY - Cottbus ER - TY - BOOK A1 - Bähr, Martin A1 - Buhl, Johannes A1 - Radow, Georg A1 - Schmidt, Johannes A1 - Bambach, Markus A1 - Breuß, Michael A1 - Fügenschuh, Armin T1 - Stable honeycomb structures and temperature based trajectory optimization for wire-arc additive manufacturing Y1 - 2019 U6 - https://doi.org/10.26127/btuopen-5079 CY - Cottbus ER - TY - BOOK A1 - Schmidt, Johannes A1 - Fügenschuh, Armin T1 - Planning inspection flights with an inhomogeneous fleet of micro aerial vehicles Y1 - 2021 U6 - https://doi.org/10.26127/BTUOpen-5656 CY - Cottbus ER - TY - BOOK A1 - Schmidt, Johannes A1 - Buhl, Johannes A1 - Fügenschuh, Armin T1 - A finite element approach for trajectory optimization in Wire-Arc Additive Manufacturing Y1 - 2021 U6 - https://doi.org/10.26127/BTUOpen-5575 CY - Cottbus ER - TY - BOOK A1 - Ocloo, Valentina E. A1 - Fügenschuh, Armin A1 - Menoukeu Pamen, Olivier T1 - A new mathematical model for a 3D container packing problem Y1 - 2020 U6 - https://doi.org/10.26127/BTUOpen-5088 CY - Cottbus ER - TY - BOOK A1 - Johannsmann, Leonie M. A1 - Craparo, Emily M. A1 - Dieken, Thor L. A1 - Fügenschuh, Armin A1 - Seitner, Björn O. T1 - Stochastic mixed-integer programming for a spare parts inventory management problem Y1 - 2020 U6 - https://doi.org/10.26127/BTUOpen-5080 CY - Cottbus ER - TY - RPRT A1 - Zazai, M. Fawad A1 - Fügenschuh, Armin T1 - Computing the trajectories for the development of optimal routes Y1 - 2019 U6 - https://doi.org/10.26127/BTUOpen-5065 CY - Cottbus ER - TY - BOOK A1 - Dee, Robin A1 - Fügenschuh, Armin A1 - Kaimakamis, George T1 - The unit re-balancing problem Y1 - 2021 U6 - https://doi.org/10.26127/BTUOpen-5658 CY - Cottbus ER - TY - GEN A1 - Ghosh, Syamali A1 - Roy, Sankar Kumar A1 - Fügenschuh, Armin T1 - The Multi-Objective Solid Transportation Problem with Preservation Technology Using Pythagorean Fuzzy Sets T2 - International Journal of Fuzzy Systems Y1 - 2022 U6 - https://doi.org/10.1007/s40815-021-01224-5 SN - 2199-3211 SN - 1562-2479 VL - 24 IS - 6 SP - 2687 EP - 2704 ER - TY - GEN A1 - Stieber, Anke A1 - Fügenschuh, Armin T1 - Dealing with Time in the Multiple Traveling Salesmen Problem with Moving Targets T2 - Central European Journal of Operations Research N2 - The multiple traveling salespersons problem with moving targets is a generalization of the classical traveling salespersons problem, where the targets (nodes or objects) are moving over time. Additionally, for each target a visibility time window is given. The task is to find routes for several salespersons so that each target is reached exactly once within its visibility time window and the sum of all traveled distances of all salespersons is minimal. We present different modeling formulations for this TSP variant. The time requirements are modeled differently in each approach. Our goal is to examine what formulation is most suitable in terms of runtime to solve the multiple traveling salespersons problem with moving targets with exact methods. Computational experiments are carried out on randomly generated test instances to compare the different modeling approaches. The results for large-scale instances show, that the best way to model time requirements is to directly insert them into a formulation with discrete time steps. Y1 - 2022 U6 - https://doi.org/10.1007/s10100-020-00712-7 SN - 1613-9178 SN - 1435-246X VL - 30 IS - 3 SP - 991 EP - 1017 ER - TY - GEN A1 - Dee, Robin A1 - Fügenschuh, Armin A1 - Kaimakamis, George T1 - The Unit Re-Balancing Problem T2 - Mathematics Y1 - 2021 U6 - https://doi.org/10.3390/math9243205 SN - 2227-7390 VL - 9 IS - 24 ER - TY - CHAP A1 - Fügenschuh, Armin A1 - Marahrens, Sönke A1 - Johannsmann, Leonie M. A1 - Matuszewski, Sandra A1 - Müllenstedt, Daniel A1 - Schmidt, Johannes ED - Turnitsa, Charles ED - Blais, Curtis Blais ED - Tolk, Andreas T1 - Using Computer-Generated Virtual Realities, Operations Research, and Board Games for Conflict Simulations T2 - Simulation and Wargaming Y1 - 2022 SN - 978-1-119-60478-5 SN - 978-1-119-60479-2 U6 - https://doi.org/10.1002/9781119604815 SP - 273 EP - 287 PB - John Wiley & Sons, Inc. CY - Hoboken, NJ ER - TY - RPRT A1 - Beisegel, Jesse A1 - Buhl, Johannes A1 - Izar, Rameez A1 - Schmidt, Johannes A1 - Bambach, Markus A1 - Fügenschuh, Armin ED - Fügenschuh, Armin T1 - Mixed-integer programming for additive manufacturing Y1 - 2021 U6 - https://doi.org/10.26127/BTUOpen-5731 CY - Cottbus ER - TY - GEN A1 - Schmidt, Johannes A1 - Fügenschuh, Armin T1 - Trajectory optimization for arbitrary layered geometries in wire-arc additive manufacturing T2 - Optimization and Engineering Y1 - 2024 U6 - https://doi.org/10.1007/s11081-023-09813-z SN - 1573-2924 VL - 25 SP - 529 EP - 553 ER - TY - GEN A1 - Gnegel, Fabian A1 - Fügenschuh, Armin T1 - Branch-and-refine for solving time-expanded MILP formulations T2 - Computers & Operations Research Y1 - 2023 U6 - https://doi.org/10.1016/j.cor.2022.106043 SN - 1873-765X SN - 0305-0548 VL - Vol. 149 SP - 1 EP - 15 ER - TY - GEN A1 - Schmidt, Johannes A1 - Fügenschuh, Armin T1 - A two-time-level model for mission and flight planning of an inhomogeneous fleet of unmanned aerial vehicles T2 - Computational Optimization and Applications Y1 - 2023 U6 - https://doi.org/10.1007/s10589-023-00450-x SN - 1573-2894 SN - 1389-4420 VL - 85 IS - 1 SP - 293 EP - 335 ER - TY - GEN A1 - Schmidt, Johannes A1 - Fügenschuh, Armin ED - Grothe, Oliver ED - Nickel, Stefan ED - Rebennack, Steffen ED - Stein, Oliver T1 - Temperature-Based Trajectory Planning for Surfaces in Wire- Arc Additive Manufacturing T2 - Operations Research Proceedings 2022 : Selected Papers of the Annual International Conference of the German Operations Research Society (GOR), Karlsruhe, Germany, September 6-9, 2022 Y1 - 2023 SN - 978-3-031-24906-8 SN - 978-3-031-24907-5 SP - 539 EP - 545 PB - Springer CY - Heidelberg ER - TY - CHAP A1 - Beisegel, Jesse A1 - Buhl, Johannes A1 - Israr, Rameez A1 - Schmidt, Johannes A1 - Bambach, Martin A1 - Fügenschuh, Armin ED - Cristiani, Emiliano ED - Falcone, Maurizio ED - Tozza, Silvia T1 - Mixed-Integer Programming Models for Two Metal Additive Manufacturing Methods T2 - Mathematical Methods for Objects Reconstruction Y1 - 2023 SN - 978-981-9907-75-5 SN - 978-981-9907-76-2 SP - 121 EP - 155 PB - Springer CY - Heidelberg ER - TY - RPRT A1 - Schmidt, Johannes A1 - Fügenschuh, Armin T1 - Trajectory optimization for arbitrary layered geometries in wire-arc additive manufacturing Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:co1-opus4-62678 CY - Cottbus ; Senftenberg ER -