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Documents authored by Clausen, Uwe


Document
09261 Abstracts Collection – Models and Algorithms for Optimization in Logistics

Authors: Cynthia Barnhart, Uwe Clausen, Ulrich Lauther, and Rolf H. Möhring

Published in: Dagstuhl Seminar Proceedings, Volume 9261, Models and Algorithms for Optimization in Logistics (2009)


Abstract
From June 21 to June 26, 2009 the Dagstuhl Seminar Perspectives Workshop 09261 ``Models and Algorithms for Optimization in Logistics '' was held in Schloss Dagstuhl~--~Leibniz Center for Informatics. During the seminar, several participants presented their current research, and ongoing work and open problems were discussed. Abstracts of the presentations given during the seminar as well as abstracts of seminar results and ideas are put together in this paper. The first section describes the seminar topics and goals in general. Links to extended abstracts or full papers are provided, if available.

Cite as

Cynthia Barnhart, Uwe Clausen, Ulrich Lauther, and Rolf H. Möhring. 09261 Abstracts Collection – Models and Algorithms for Optimization in Logistics. In Models and Algorithms for Optimization in Logistics. Dagstuhl Seminar Proceedings, Volume 9261, pp. 1-18, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)


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@InProceedings{barnhart_et_al:DagSemProc.09261.1,
  author =	{Barnhart, Cynthia and Clausen, Uwe and Lauther, Ulrich and M\"{o}hring, Rolf H.},
  title =	{{09261 Abstracts Collection – Models and Algorithms for Optimization in Logistics }},
  booktitle =	{Models and Algorithms for Optimization in Logistics},
  pages =	{1--18},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2009},
  volume =	{9261},
  editor =	{Cynthia Barnhart and Uwe Clausen and Ulrich Lauther and Rolf H. M\"{o}hring},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.09261.1},
  URN =		{urn:nbn:de:0030-drops-21915},
  doi =		{10.4230/DagSemProc.09261.1},
  annote =	{Keywords: Logistics, optimization, transport}
}
Document
09261 Executive Summary – Models and Algorithms for Optimization in Logistics

Authors: Cynthia Barnhart, Uwe Clausen, Ulrich Lauther, and Rolf H. Möhring

Published in: Dagstuhl Seminar Proceedings, Volume 9261, Models and Algorithms for Optimization in Logistics (2009)


Abstract
From June 21 to June 26, 2009, the Dagstuhl Seminar 09261 on Models and Algorithms for Optimization in Logistics was held in the International Conference and Research Center (IBFI), Schloss Dagstuhl. During the seminar, several participants presented their current research, and ongoing work and open problems were discussed. Abstracts of the presentations given during the seminar as well as abstracts of seminar results and ideas are put together in this paper. The first section describes the seminar topics and goals in general. Links to extended abstracts or full papers are provided, if available.

Cite as

Cynthia Barnhart, Uwe Clausen, Ulrich Lauther, and Rolf H. Möhring. 09261 Executive Summary – Models and Algorithms for Optimization in Logistics. In Models and Algorithms for Optimization in Logistics. Dagstuhl Seminar Proceedings, Volume 9261, pp. 1-2, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)


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@InProceedings{barnhart_et_al:DagSemProc.09261.2,
  author =	{Barnhart, Cynthia and Clausen, Uwe and Lauther, Ulrich and M\"{o}hring, Rolf H.},
  title =	{{09261 Executive Summary – Models and Algorithms for Optimization in Logistics}},
  booktitle =	{Models and Algorithms for Optimization in Logistics},
  pages =	{1--2},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2009},
  volume =	{9261},
  editor =	{Cynthia Barnhart and Uwe Clausen and Ulrich Lauther and Rolf H. M\"{o}hring},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.09261.2},
  URN =		{urn:nbn:de:0030-drops-21752},
  doi =		{10.4230/DagSemProc.09261.2},
  annote =	{Keywords: Logistics, optimization, transport}
}
Document
Integrated Vehicle Routing and Crew Scheduling in Waste Management (Part II)

Authors: Jens Baudach, Annette Chmielewski, and Uwe Clausen

Published in: Dagstuhl Seminar Proceedings, Volume 9261, Models and Algorithms for Optimization in Logistics (2009)


Abstract
Planning Waste Management involves the two major resources collection-vehicles and crews. The overall goal of our project with two waste management companies is an integrative approach for planning the routes and the crews of the vehicles. In the first phase of our three-phase approach we generate daily crew tasks which contain routes operated by a single crew at a particular day within a given disposal horizon considering various practical requirements. The goal is to minimize the number of crews/vehicles required for the entire disposal process. Given the minimal number of crews, in phase 2 we re-optimize the daily crew tasks to increase the robustness of the routes. In the third phase we assign employees to the generated daily crew tasks for all working days over the year such that the constraints concerning crew scheduling are satisfied and the benefits for the employees and the company are maximal. For all phases we present solution methods yielding first promising results for a real-world data set.

Cite as

Jens Baudach, Annette Chmielewski, and Uwe Clausen. Integrated Vehicle Routing and Crew Scheduling in Waste Management (Part II). In Models and Algorithms for Optimization in Logistics. Dagstuhl Seminar Proceedings, Volume 9261, pp. 1-5, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2009)


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@InProceedings{baudach_et_al:DagSemProc.09261.14,
  author =	{Baudach, Jens and Chmielewski, Annette and Clausen, Uwe},
  title =	{{Integrated Vehicle Routing and Crew Scheduling in Waste Management (Part II)}},
  booktitle =	{Models and Algorithms for Optimization in Logistics},
  pages =	{1--5},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2009},
  volume =	{9261},
  editor =	{Cynthia Barnhart and Uwe Clausen and Ulrich Lauther and Rolf H. M\"{o}hring},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.09261.14},
  URN =		{urn:nbn:de:0030-drops-21836},
  doi =		{10.4230/DagSemProc.09261.14},
  annote =	{Keywords: Crew Scheduling, Waste Management, Integer Programming, Column Generation, Lagrangean Relaxation}
}
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