Preface. Key note address. Session I. Combining recent advances in information and optimization technologies for competitive advantage in the downstream petroleum industry, D Klingman & N Philips. Logistics-related operations research at KSLA, J J Bisschop. Vehicle routing: practical and algorithmic aspects, N Christofides & A Mingozzie. Large scale control systems - an integrated approach, A Titli. Session II. Hierarchical control under uncertainty: formal and practical aspects, K Malinowski. Interfacing optimizers with process simulators - methodology and application, L S Lasdon. An attempt to use parallel computing in large scale optimisation, J G G van de Vorst. Management issues in flexible process manufacturing, L F Gelders & J Ashayeri. Session III. Methodologies for the evaluation and control of large scale production/distribution systems under uncertainty, A Federgruen. A language-based control theory for discrete-event systems, W M Wonham. Session IV. Software - promise and threat, M Lehman. Calculus for software development, W M Turski. Intelligent user interfaces for mathematical programming, H J Greenberg. Observations from industrial research. Index.