This book includes a collection of articles that present recent developments in the fields of optimization and dynamic game theory, economic dynamics, dynamic theory of the firm, and population dynamics and non standard applications of optimal control theory. The authors of the articles are well respected authorities in their fields and are known for their high quality research in the fields of optimization and economic dynamics.

This book's aim is to provide several different kinds of information: a delineation of general metaheuristics methods, a number of state-of-the-art articles from a variety of well-known classical application areas as well as an outlook to modern computational methods in promising new areas. Therefore, this book may equally serve as a textbook in graduate courses for students, as a reference book for people interested in engineering or social sciences, and as a collection of new and promising avenues for researchers working in this field.

Optimal Control and Dynamic Games has been edited to honor the outstanding contributions of Professor Suresh Sethi in the fields of Applied Optimal Control. Professor Sethi is internationally one of the foremost experts in this field. He is, among others, co-author of the popular textbook "Sethi and Thompson: Optimal Control Theory: Applications to Management Science and Economics."

The book consists of a collection of essays by some of the best known scientists in the field, covering diverse aspects of applications of optimal control and dynamic games to problems in Finance, Management Science, Economics, and Operations Research. In doing so, it provides both a state-of-the-art overview over recent developments in the field, and a reference work covering the wide variety of contemporary questions that can be addressed with optimal control tools, and demonstrates the fruitfulness of the methodology.

The aim of Metaheuristics: Progress in Complex Systems Optimization is to provide several different kinds of information: a delineation of general metaheuristics methods, a number of state-of-the-art articles from a variety of well-known classical application areas as well as an outlook to modern computational methods in promising new areas. Therefore, this book may equally serve as a textbook in graduate courses for students, as a reference book for people interested in engineering or social sciences, and as a collection of new and promising avenues for researchers working in this field. Highlighted are recent developments in the areas of Simulated Annealing, Path Relinking, Scatter Search, Tabu Search, Variable Neighborhood Search, Hyper-heuristics, Constraint Programming, Iterated Local Search, GRASP, bio-inspired algorithms like Genetic Algorithms, Memetic Algorithms, Ant Colony Optimization or Swarm Intelligence, and several other paradigms.

Optimal Control and Dynamic Games has been edited to honor the outstanding contributions of Professor Suresh Sethi in the fields of Applied Optimal Control. Professor Sethi is internationally one of the foremost experts in this field. He is, among others, co-author of the popular textbook "Sethi and Thompson: Optimal Control Theory: Applications to Management Science and Economics."

The book consists of a collection of essays by some of the best known scientists in the field, covering diverse aspects of applications of optimal control and dynamic games to problems in Finance, Management Science, Economics, and Operations Research. In doing so, it provides both a state-of-the-art overview over recent developments in the field, and a reference work covering the wide variety of contemporary questions that can be addressed with optimal control tools, and demonstrates the fruitfulness of the methodology.

Yom 28. - 31. August 1990 fand die 19. Jahrestagung der Deutschen Gesellschaft fur Operations Research e. V. an der Wirtschaftsuniversitat Wien statt. Erstmals wurde diese Jahrestagung zusammen mit den anderen deutschsprachigen OR-Gesellschaften, der Gesell- schaft fur Mathematik, Okonomie und Operations Research (GMOOR), der Osterreichi- schen Gesellschaft fur Operations Research (OGOR) und der Schweizerischen Vereinigung fur Operations Research (SVOR) abgehalten. Diese internationale Tagung stand unter dem Titel Operations Research 1990. Fast 1000 Teilnehmer aus 38 Lander machten die Tagung zu einem internationalen GroBereignis. Am stiirksten vertreten waren dabei die Lander BRD (mit 381 Teilnehmern), Osterreich (91), Niederland~ (57), USA (44), Schweiz (38), Italien (35) sowie Kanada (23). Dank der geiinderten politischen Lage konnten knapp 100 Teilnehmer aus den (ehemaligen) sozialistischen Staaten die Tagung besuchen. Dies wurde ermoglicht dank der vielfiiltigen finanziellen Unterstiitzungen durch die Privatwirtschaft und durch das osterreichische Bundesministerium fur Wissenschaft und Forschung. Die Operations Research Proceedings 1990 dokumentieren nur einen kleinen Teil der iiber 600 Vortrage. Von den zur Publikation eingereichten Langfassungen konnten aufgrund der beschriinkten Seitenzahl nur 50 % angenommen werden. Zum groBen Bedauern des Pro- grammausschusses waren aufgrund der beschriinkten Seitenzahl von einer Ablehnung auch ausgezeichnete Manuskripte betroffen. Allein die Veroffentlichung der Kurzfassungen aller prasentierten Vortriige Mtte den Proceedingsband gesprengt. Aus diesem Grunde werden in diesen Proceedings erstmals keine Kurzfassungen publiziert und damit auf eine vollstandige Dokumentation der Tagung verzichtet. Es solI aber hier auf zwei weitere Publikationen hin- gewiesen werden, in denen Vortrage der Tagung Operations Research 90 enthalten sind.