This volume contains a selection of papers referring to lectures presented at the symposium "Operations Research 2003" (OR03) held at the Ruprecht­ Karls-Universitiit Heidelberg, September 3 - 5, 2003. This international con­ ference took place under the auspices of the German Operations Research So­ ciety (GOR) and of Dr. Erwin Teufel, prime minister of Baden-Wurttemberg. The symposium had about 500 participants from countries all over the world. It attracted academians and practitioners working in various field of Opera­ tions Research and provided them with the most recent advances in Opera­ tions Research and related areas in Economics, Mathematics, and Computer Science. The program consisted of 4 plenary and 13 semi-plenary talks and more than 300 contributed papers selected by the program committee to be presented in 17 sections. Due to a limited number of pages available for the proceedings volume, the length of each article as well as the total number of accepted contributions had to be restricted. Submitted manuscripts have therefore been reviewed and 62 of them have been selected for publication. This refereeing procedure has been strongly supported by the section chairmen and we would like to express our gratitude to them. Finally, we also would like to thank Dr. Werner Muller from Springer-Verlag for his support in publishing this proceedings volume.

Inhalt

GOR Awards.- Assessing Capacity Improvements by Relaying in Cellular Networks.- Performance Analysis of M-designed Inbound Call Centers.- Revenue Management.- Revenue Management in Manufacturing.- Network Revenue Management: Some Issues on Upper and Lower Bounds.- Telecommunication and Information Technology.- Optimisation Methods for UMTS Radio Network Planning.- Production, Logistics and Supply Chain Management.- Distribution Planning Problem: A Survey.- Artikelanordnungsmuster bei Mann-zur-Ware-Kommissionierung.- The Impact of the Exchange of Market and Stock Information on the Bullwhip Effect in Supply Chains.- Analyzing the Bullwhip Effect of Installation-Stock and Echelon-Stock Policies with Linear Control Theory.- Policy Approximation for the Production Inventory Problem with Stochastic Demand, Stochastic Yield and Production Leadtime.- A Dynamic Model for Choosing the Optimal Technology in the Context of Reverse Logistics.- Deriving Inventory-Control Policies for Periodic Review with Genetic Programming.- Dynamic Multi-Commodity Facility Location: A Mathematical Modeling Framework for Strategic Supply Chain Planning.- Leistungsabstimmung von Produktionslinien in der Elektronikmontage.- A Priority-Rule Based Method for Batch Production Scheduling in the Process Industries.- Services, Transportation and Traffic.- A Metaheuristic Approach for Hazardous Materials Transportation.- Personal- und Fahrzeugeinsatzplanung in der Müllentsorgung.- Modelling of Complex Costs and Rules in a Crew Pairing Column Generator.- Convexification of the Traffic Equilibrium Problem with Social Marginal Cost Tolls.- Vermittlung von Fahrgemeinschaften betrachtet als Vehicle Routing Problem.- Scheduling and Project Management.- Single Machine Scheduling with Precedence Constraints and SLK Due Date Assignment.- A Parallel Approach to the Pricing Step in Crew Scheduling Problems.- Scheduling Regular and Temporary Employees with Qualifications in a Casino.- Marketing and Data Analysis.- Web Robot Detection - the Influence of Robots on Web Mining.- Visualizing Recommender System Results via Multidimensional Scaling.- Die Modellierung von Präferenzveränderungen mittels Scanner Panel Daten.- Measurement of Online Visibility.- Determinants and Behavioral Consequences of Customer Loyalty and Dependence in Online Brokerage - Results from a Causal Analysis.- Product Bundling as a Marketing Application.- Energy, Environment and Health.- Entwicklung und Anwendung einer mehrstufigen Methodik zur Analyse betriebsübergreifender Energieversorgungskonzepte.- A System Dynamics Model of the Epidemiological Transition.- Finance, Banking and Insurances.- Implementing a Reference Portfolio Strategy in Bond Portfolio Management.- Evolutionary Algorithms and the Cardinality Constrained Portfolio Optimization Problem.- Calculating Concentration-Sensitive Capital Charges with Conditional Value-at-Risk.- Simulation.- Integration der Simulation in die Programmplanung einer globalen Supply Chain.- Objektorientierte Simulation von Anlagen der Elektronikmontage.- Continuous Optimization.- A Mixed-Discrete Bilevel Programming Problem.- Detecting Superfluous Constraints in Quadratic Programming by Varying the Optimal Point of the Unrestricted Problem.- Fast Optimal Control Algorithms with Application to Chemical Engineering.- Discrete and Combinatorial Optimization.- Proofs of Unsatisfiability Via Semidefinite Programming.- Algorithms with Performance Guarantees for a Metric Problem of Finding Two Edge-Disjoint Hamiltonian Circuits of Minimum Total Weight.- A Quadratic Optimization Model for the Consolidation of Farmland by Means of Lend-Lease Agreements.- A Bipartite Graph Simplex Method.- Regions of Stability for Nonlinear Discrete Optimization Problems.- Optimization Models for the Containership Stowage Problem.- Solving the Sequential Ordering Problem with Automatically Generated Lower Bounds.- Scheduling Jobs with a Stepwise Function of Change of Their Values.- Small Instance Relaxations for the Traveling Salesman Problem.- Applied Probability.- A Remark on Multiobjective Stochastic Optimization Problems: Stability and Empirical Estimates.- Portfolio Optimization under Partial Information: Stochastic Volatility in a Hidden Markov Model.- On the Set of Optimal Policies in Variance Penalized Markov Decision Chains.- On Random Sums and Compound Process Models in Financial Mathematics.- Artificial Intelligence, Fuzzy Logic and Neural Networks.- Structural Optimization in Aircraft Engineering using Support Vector Machines.- Zeitformen in einer probabilistischen Konditionallogik.- Dienstplanbewertung mit unscharfen Regeln.- Optimization by Gaussian Processes assisted Evolution Strategies.- Econometrics, Statistics, Mathematical Economics and Decision Theory.- Stochastic Programming and Statistical Estimates.- Time Lags in Capital Accumulation.- Experimental Economics, Game Theory and Auctioning.- First-Price Bidding and Entry Behavior in a Sequential Procurement Auction Model.- Web Technology, Knowledge Management and Decision Support Systems.- Financial Market Web Mining with the Software Agent PISA.- Non-Linear Programming Solvers for Decision Analysis.- knowCube - A Spreadsheet Method for Interactive Multicriteria Decision Making.