Energy Modelling Studies and Conservation documents the proceedings of seminar of the United Nations Economic Commission for Europe held in Washington D.C., on 24-28 March 1980. The volume begins with a Seminar Theme Paper that identifies background policy issues that lead to modeling; discusses points of view involved in energy policy modeling; defines the context of a set of energy conservation problems or questions being analyzed; and provides a forward-looking view of the subject and its problems. This is followed by 54 papers that are organized into three main topics: (1) energy models of major interest to individual countries; (2) the interaction between energy conservation measures and the economy; and (3) the international aspects of energy conservation models. The papers on Topic 1 cover forecasting methodologies, demand and conservation studies, and electricity and supply studies. The papers on Topic 2 present the experiences in countries such as Norway, UK, the USSR, and US. The papers on Topic 3 include studies on energy conservation policies in France, Germany, and Italy; and the MARKAL multi-period linear programming model for joint research and development in the field of new energy technologies of the 17 countries of the International Energy Agency.

Operations Research: 1934-1941," 35, 1, 143-152; "British The goal of the Encyclopedia of Operations Research and Operational Research in World War II," 35, 3, 453-470; Management Science is to provide to decision makers and "U. S. Operations Research in World War II," 35, 6, 910-925; problem solvers in business, industry, government and and the 1984 article by Harold Lardner that appeared in academia a comprehensive overview of the wide range of Operations Research: "The Origin of Operational Research," ideas, methodologies, and synergistic forces that combine to 32, 2, 465-475. form the preeminent decision-aiding fields of operations re search and management science (OR/MS). To this end, we The Encyclopedia contains no entries that define the fields enlisted a distinguished international group of academics of operations research and management science. OR and MS and practitioners to contribute articles on subjects for are often equated to one another. If one defines them by the which they are renowned. methodologies they employ, the equation would probably The editors, working with the Encyclopedia's Editorial stand inspection. If one defines them by their historical Advisory Board, surveyed and divided OR/MS into specific developments and the classes of problems they encompass, topics that collectively encompass the foundations, applica the equation becomes fuzzy. The formalism OR grew out of tions, and emerging elements of this ever-changing field. We the operational problems of the British and U. s. military also wanted to establish the close associations that OR/MS efforts in World War II.