Overview of Klaus Neumann’s Research -- Overview of Klaus Neumann’s Research -- Optimization -- Matrices in Shop Scheduling Problems -- Saddle Points from the Geometric Point of View -- Nachbarschaftssuche bei mehrkriteriellen Flow Shop Problemen -- The Solution of a Generalization of a Bayesian Stopping Problem of MacKinnon -- A Remark on the Formulation of Dual Programs Based on Generalized Convexity -- Operations Research in Production and Service Management -- An Application of Markov Decision Processes to the Seat Inventory Control Problem -- Immaterielle Input-Output-Systeme -- Audit-Staff Scheduling by Column Generation -- An MILP Modelling Approach for Shelf Life Integrated Planning and Scheduling in Scalded Sausage Production -- Optimale Anpassung im Gutenberg-Produktionsmodell: Eine analytische Ermittlung der Kostenfunktion aus den Karush-Kuhn-Tucker-Bedingungen -- Just-in-Time Production of Large Assemblies Using Project Scheduling Models and Methods -- A Cyclic Approach to Large-Scale Short-Term Planning of Multipurpose Batch Plants -- Models and Methods for Workforce Scheduling: An Application to Casino Operations -- Operations Research in Logistics -- Pile Problems and Their Mathematical Treatment -- Risk and Safety Stock Management in Production Planning and Inventory Control with Stochastic Demand and Yield -- Economies of Scale in Hub & Spoke Network Design Models: We Have It All Wrong -- A Stackelberg Equilibrium Model for Supply Chain Inventory Managemen -- Das Potenzial von Operations Research in Transport und Verkehr -- Interdisciplinary Dimensions -- Evolution of Conventions in Populations with Local Interaction Structures -- Empirical Examination of Operational Loss Distributions -- Fuzzy-Nutzwertanalyse und Fuzzy-AHP -- Piecewise Linear Bertrand Oligopoly.