Computers & Operations Research

Computers & Operations Research





Editor::Francisco Saldanha da Gama





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Aims & Scope

Operations research and computers meet in a large number of scientific fields, many of which are of vital current concern to our troubled society. These include, among others, ecology, transportation, safety, reliability, urban planning, economics, inventory control, investment strategy and logistics (including reverse logistics). Computers & Operations Research provides an international forum for the application of computers and operations research techniques to problems in these and related fields.

The common element in all these scientific areas which this Journal addresses is the methodology for determining viable solutions to problems, using computers and the techniques of operations research. However, it is not only the mathematical methodology which is of interest: the applications are of equal importance. The two are mutually supportive, since understanding the application helps one greatly to comprehend the mathematical methods used, and vice versa.

This Journal will therefore concern itself with these scientific fields of application, and will be accordingly broad in scope of subject matter. The form, content and language of the articles will take cognizance of this breadth of applications and of the consequent fact that many readers may not be expert in the particular scientific field to which the computer and operations research techniques are applied by the author. All full-length research papers must contain original research results, and demonstrate constructive algorithmic complexity and extensive numerical experiments. (Meta)heuristics (other than well-established algorithms such as evolutionary algorithms or ant colony optimization) must be described in metaphor-free language. This is a way to ensure that they are immediately comparable to existing algorithms. Moreover, this facilitates highlighting the algorithmic contributions to the literature. Numerical illustrations (examples) are not sufficient: the numerical experiments must have a scientific value of their own, particularly with comparisons to other approaches. In addition, the research performed should represent novel and significant work relative to the relevant literature. It is the responsibility of the authors to ensure that the submitted manuscripts are written using proper English, that possible grammatical or spelling errors are eliminated and that the text conforms to correct scientific English. Submissions which do not satisfythese criteria may be rejected without being sent to reviewers.

Other paper types include:

Case Studies:
This Journal will also publish articles containing interesting real applications, even though there may be no new techniques involved. These should be labeled as case studies. It is important that they be actual cases of interest and significance which the authors were asked to analyze. In addition, the focus on algorithmic results should be emphasized.

Review Papers and Tutorials (by invitation only):
The content and presentation of this international Journal is such as to provide maximum utility to researchers, teachers and practitioners who have an interest in operations research, computers and the subject matter of the fields of application served by these. Tutorial and state-of-the-art papers will be presented from time to time, as deemed suitable. Emphasis will be given to those science areas of public importance, in which significant advances are being made by means of computers and operations research.

Focused Issue Papers:
Computers & Operations Research also publishes focused issues on topics of interest related to its editorial mission. Such issues typically contain between six and twelve articles. They are put together within an eighteen month period under the responsibility of one or several guest editors. Any contribution submitted by a guest editor is handled by the Editor of C&OR. Prospective guest editors are encouraged to contact the Editor.


Researchers and Practitioners interested in computers and operations research and management science, in particular, ecology, transportation, safety, reliability, urban planning, economics, inventory control, investment strategy and military analysis. Al

Abstracting and Indexing

ABI/Inform, ACM Guide to Computing Literature, Artificial Intelligence Abstracts, Cambridge Scientific Abstracts, CompuScience, Computer Abstracts Computer Contents, Computer Reviews, Current Contents Engineering Technology & Applied Science, Current Contents/CompuMath, Current Contents/SciSearch Database, Engineering Index, IAOR, INSPEC, Information Science Abstracts, Legal Contents, Management Contents, Mathematical Reviews, PASCAL/CNRS, SSSA/CISA/ECA/ISMEC, Science Citation Index, Zentralblatt MATH
Editor: Stefan Nickel Institute of Operations Research, Building 11.40, Karlsruhe Institute of Technology (KIT), Kaiserstrasse 12, 76131 Karlsruhe, Germany, Previous Editors: Samuel J. Raff Potomac, MD, USA, Gilbert Laporte Montreal, QC, Canada, Editorial Advisory Board M. Albareda Sambola Universitat Politecnica de Catalunya (UPC), Terrassa, Spain, O. Alp Bilkent University, Bilkent Ankara, Turkey, J.R. Artalejo Complutense University of Madrid, Madrid, Spain, J.F. Bard University of Texas, Austin, TX, USA, R. Batta State University of New York (SUNY) at Buffalo, Buffalo, NY, USA, J.E. Beasley Imperial College London, London, UK, B. Bektas University of Southampton, Southampton, UK, C. Blum Universitat Politecnica de Catalunya (UPC), Barcelona, Spain, C. Caliskan Utah Valley University, Orem, UT, USA, S. Chamberland École Polytechnique de Montreal, Montreal, Canada, T.C.E. Cheng The Hong Kong Polytechnic University, Kowloon, Hong Kong, M. Christiansen Norwegian University of Science & Technology (NTNU), Trondheim, Norway, W.D. Cook York University, Toronto, Canada, A. Corberan Universitat de València, Bursajot, Spain, J-F. Cordeau Ecole des Hautes Etudes Commerciales (HEC) Montreal, Montréal, QC, Canada, Y. Cui Guangxi University, Nanning, China, A. Dasci York University, Toronto, QC, Canada, E.D. Demeulenmeester Katholieke Universiteit Leuven, Leuven, Belgium, K.F. Doerner University of Vienna, Wien, Austria, R.W. Eglese Lancaster University, Bailrigg, Lancaster, UK, M. Ehrgott University of Auckland, Auckland, New Zealand, G Eichfelder Technische Universität Ilmenau, Ilmenau, Germany, H.A. Eiselt University of New Brunswick, Fredericton, NB, Canada, E. Fernandez Universitat Politecnica de Catalunya (UPC), Barcelona, Spain, S.I. Gass University of Maryland, College Park, MD, USA, G. Ghiani Università di Lecce, Lecce, Italy, B. Golden University of Maryland, College Park, MD, USA, L. Gouveia Universidade de Lisboa (Lisbon), Campo Grande, Lisboa, Portugal, J. Grabowski Wroclaw University of Technology, Wroclaw, Poland, Th. Hanne Fachhochschule Nordwestschweiz, Brugg, Switzerland, M. Haouari Ecole Polytechnique de Tunisie, La Marsa, Tunisia, M. Hariga American University of Sharjah, Sharjah, United Arab Emirates, A. Hertz Gerad Ecole des HFC, Montreal, Canada, M. Hifi Université de Picardie Jules Verne UFR des Sciences, Amiens, France, J.A. Hoogeveen Universiteit Utrecht, Utrecht, Netherlands, H.-X. Huang Tsinghua University, Beijing, China, J. Józefowska Poznan University of Technology, Poznan, Poland, H. Kellerer Karl-Franzens-Universität Graz, Graz, Austria, J. Klincewicz Bell Laboratories Middletown, Middletown, NJ, USA, M.Y. Kovalyov National Academy of Sciences of Belarus (NASB), Minsk, Belarus, D. Krass University of Toronto, Toronto, Canada, G. Laporte HEC Montreal, Montreal, QC, Canada, J.M.Y. Leung Chinese University of Hong Kong, Hong Kong, China, M. Liberatore Villanova University, Villanova, USA, B.M.T. Lin National Chiao Tung University, Hsinchu, Taiwan, ROC, A. Lokketangen Molde University College, Molde, Norway, M. Lübbecke Rheinisch-Westfälische Technische Hochschule Aachen (RWTH), Aachen, Germany, V. Marianov Pontificia Universidad Católica de Chile, Macul, Santiago, Chile, A. Marin Universidad de Murcia, Murcia, Spain, T. Melo Fraunhofer Institut für Techno- und Wirtschaftsmathematik (ITWM), Kaiserslautern, Germany, J. Mittenthal University of Alabama, Tuscaloosa, USA, N. Mladenovic Brunel University, Uxbridge, UK, G. Mosheiov Hebrew University of Jerusalem, Jerusalem, Israel, R. Musmanno Università della Calabria, Rende, Italy, K-M. Osei-Bryson Virginia Commonwealth University (VCU), Richmond, VA, USA, D. Pisinger University of Copenhagen, Copenhagen, Denmark, J-Y. Potvin Université de Montréal, Montréal, Canada, C. Prins Université de technologie de Troyes, Troyes Cedex, France, J. Puerto Universidad de Sevilla, Sevilla, Spain, M. Reimann University of Warwick, Coventry, UK, D.F. Rogers University of Cincinnati, Cincinnati, OH, USA, J-J. Salazar-Gonzalez Universidad de La Laguna, La Laguna, Spain, F. Saldanha da Gama Universidade de Lisboa (Lisbon), Lisboa, Portugal, M.W.P. Savelsbergh Georgia Institute of Technology, Atlanta, GA, USA, K. Schimmelpfeng Brandenburgische Technische Universität (BTU), Cottbus, Germany, M. S
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