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5 results on '"TUM Business School"'

1. Column Generation for Outbound Baggage Handling at Airports

Author

M. Frey, Rainer Kolisch, Christian Artigues, TUM Business School, Technische Universität Munchen - Université Technique de Munich [Munich, Allemagne] (TUM), Department of Industrial and Systems Engineering [NCSU] (ISE), North Carolina State University [Raleigh] (NC State), University of North Carolina System (UNC)-University of North Carolina System (UNC), Équipe Recherche Opérationnelle, Optimisation Combinatoire et Contraintes (LAAS-ROC), Laboratoire d'analyse et d'architecture des systèmes (LAAS), Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées, ANR-19-P3IA-0004,ANITI,Artificial and Natural Intelligence Toulouse Institute(2019), Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université Toulouse Capitole (UT Capitole), and Université de Toulouse (UT)

Subjects
Scheme (programming language), Engineering, Mathematical optimization, column generation, 0211 other engineering and technologies, Transportation, Column generation algorithm, 02 engineering and technology, Acceleration, Resource (project management), 0502 economics and business, Decomposition (computer science), Column generation, Simulation, Civil and Structural Engineering, computer.programming_language, 050210 logistics & transportation, 021103 operations research, Arrival process, business.industry, 05 social sciences, Workload, [INFO.INFO-RO]Computer Science [cs]/Operations Research [cs.RO], cutting planes, outbound baggage handling, business, computer, binary programming
Abstract

The planning of outbound baggage handling at international airports is challenging. Outgoing flights have to be assigned and scheduled to handling facilities at which the outgoing baggage is loaded into containers. To avoid disruptions of the system the objective is to minimize workload peaks over the entire system. The resource demand of the jobs that have to be scheduled depends on the arrival process of the baggage. In this paper we present a time-indexed mathematical programming formulation for planning the outbound baggage. We propose an innovative decomposition procedure in combination with a column generation scheme to solve practical problem instances. The decomposition significantly reduces the symmetry effect in the time-indexed formulation and also speeds up the computational time of the corresponding Dantzig–Wolfe formulation. To further improve our column generation algorithm we propose state-of-the-art acceleration techniques for the primal problem and the pricing problem. Computational results based on real data from a major European airport show that the proposed procedure reduces the maximal workloads by more than 60% compared to the current assignment procedure used. The online appendix is available at https://doi.org/10.1287/trsc.2017.0739 .

Published
2017
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2. Project Management and Scheduling

Author

Kolisch, Rainer, Demeulemeester, Erik, Ruiz, Ruben, T'Kindt, Vincent, Węglarz, Jan, TUM Business School, Technische Universität Munchen - Université Technique de Munich [Munich, Allemagne] (TUM), Instituto Tecnológico de Informática, Instituto Tecnologico de Informatica, Laboratoire d'Informatique Fondamentale et Appliquée de Tours (LIFAT), Université de Tours (UT)-Institut National des Sciences Appliquées - Centre Val de Loire (INSA CVL), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), T'Kindt, Vincent, Centre National de la Recherche Scientifique (CNRS)-Université de Tours-Institut National des Sciences Appliquées - Centre Val de Loire (INSA CVL), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)

Subjects
[INFO.INFO-RO] Computer Science [cs]/Operations Research [cs.RO], [INFO.INFO-RO]Computer Science [cs]/Operations Research [cs.RO], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2016

3. Qualification of multi-skilled human resources under knowledge depreciation and company skill level targets

Author

Kolisch, Rainer, Heimerl, Christian, TUM Business School, and Technische Universität Munchen - Université Technique de Munich [Munich, Allemagne] (TUM)

Subjects
Physical Sciences
Abstract

International audience; We present an optimization model to address the problem of assigning project work to multi--skilled internal and external human resources while considering learning, depreciation of knowledge and company skill level targets. This constrained non-linear continuous model is solved using COIN-OR's Ipopt. We assess the computation time and the impacts of problem parameters like the shape of the learning curve, company skill level targets, depreciation of knowledge and cost parameters. Amongst our findings, our results show that faster learning of human resources leads to more specialized individuals while at the same time the whole company's knowledge is broadened.

Published
2010
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4. The performance of a generalized Bailey-Welch rule for outpatient appointment scheduling under inpatient and emergency demand.

Author

Sickinger S and Kolisch R

Subjects
Algorithms, Costs and Cost Analysis, Efficiency, Organizational, Humans, Radiology Department, Hospital economics, Appointments and Schedules, Emergency Service, Hospital, Inpatients, Outpatients, Radiology Department, Hospital organization & administration
Abstract

We are considering the problem of scheduling a given number of outpatients to a medical service facility with two resources servicing outpatients, inpatients, and emergency patients. Each of the three patient classes has associated class-specific arrival processes and cost-figures. The objective is to maximize the total expected reward which is made of revenues for served patients, costs for letting patients wait, and costs for denial of service. For this problem we propose a generalization of the well-known Bailey-Welch rule as well as a neighborhood search heuristic. We analyze the impact of different problem parameters on the total reward and the structure of the derived appointment schedules and address the question of the number of outpatients to be scheduled. The results show that the generalized Bailey-Welch rule performs astonishingly well over a wide range of problem parameters.

Published
2009
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