CIM (computer integrated manufacturing) is an acronym that has become fairly well known in recent years in manufacturing and related engineering circles. The purpose of the CIM Project at IIASA is to close the widening gap between the pace of technological, economic, and social events, on the one hand, and the progress of understanding those events, on the other. The IIASA study has attempted, first, to define the existing world situation with regard to the underlying technologies of CIM, and the degrees to which technologies such as NC/CNC machine tools, robotics, and CAD/CAM are currently being used in metal products manufacturing. The methodology adopted in the study is eclectic. It is multiperspective and multidisciplinary, as well as multinational. It incorporates elements of both "bottom-up" and "top-down" approaches. Finally, it incorporates both historical analysis and "model" forecasts of the future, together with scenarios analyses. This fourth volume in the series focuses on the effects of CIM on society and the economy in both quantitative and qualitative terms.

Policy failures in environment and development have been blamed on frag mented and eclectic policies and strategies. The 1992 United Nations Con ference on Environment and Development, the 'Earth Summit' in Rio de Janeiro, called therefore for an integrated approach in planning and policy making to achieve long-term sustainable growth and development. The Con ference also recognized in its action plan, the Agenda 21, that integrated poli cies need to be supported by integrated information, notably requiring the implementation of integrated environmental and economic accounting by its member States. During the preparations for the Rio Summit, scientists and practitioners of national accounting met in a Special Conference on Environmental Account ing, organized by the International Association for Research in Income and Wealth (IARIW) in Baden, Austria. Their aim was to explore the need for and methodologies of adjusting national accounts for environmental reasons. National accountants had faced mounting criticism that conventional accounting neglected new scarcities in natural capital, as well as the social cost of environmental degradation. The result of their deliberations was a draft manual, later issued by the United Nations Statistics Division (UNSD) as a handbook of Integrated Environmental and Economic Accounting."

In the policy arena, as well as in the academic world, a new challenge is having to deal with the global community. We are increasingly aware that the world is linked through economy-energy-environment interactions. We are increasingly aware, at the same time, that the emergence of the global community does not imply an integrated harmonious world; rather, it is a community where co- tries/regions of different interests and values face each other directly. Global governance has to be achieved through actions of national governments under different motives and constraints. We need to have an analytical tool that is capable of producing a global picture, yet with detailed country resolution. If the world is a better place now compared to 100 years ago in terms of p- capita income, this is due to the industrialization that continued throughout the 20th century. We entered the 21st century knowing that the human aspiration that translates into ever-increasing production may not be tenable in the long run. Sustainability of the global community is at stake. In contrast to inc- mental decision making through the market mechanism that should lead to some optimal state under some assumptions such as perfect knowledge, smooth movement of resources, no externalities, and so forth, we need to have an a- lytical tool to provide us with details of the future state of the world.

In this study, the author constructs a systematic statistical framework for studying the environment and technology, the economy and society, and performs a series of analyses of the impact of human activities on the environment. The many topics analyzed include: energy consumption, resource use, water and air pollution, technology, recycling, and pollution prevention. From the theoretical perspective, Environmental Options: Accounting for Sustainability provides not only a model at the global level, but also at the level of individual industries, and for various social groups. Of equal significance, the framework also allows international linkages to be examined. The proposed framework will serve as a common yardstick in formulating environment policy in both developed and less developed countries, setting the standard for further international cooperation.

In this study, the author constructs a systematic statistical framework for studying the environment and technology, the economy and society, and performs a series of analyses of the impact of human activities on the environment. The many topics analyzed include: energy consumption, resource use, water and air pollution, technology, recycling, and pollution prevention. From the theoretical perspective, Environmental Options: Accounting for Sustainability provides not only a model at the global level, but also at the level of individual industries, and for various social groups. Of equal significance, the framework also allows international linkages to be examined. The proposed framework will serve as a common yardstick in formulating environment policy in both developed and less developed countries, setting the standard for further international cooperation.

In the policy arena, as well as in the academic world, a new challenge is having to deal with the global community. We are increasingly aware that the world is linked through economy-energy-environment interactions. We are increasingly aware, at the same time, that the emergence of the global community does not imply an integrated harmonious world; rather, it is a community where co- tries/regions of different interests and values face each other directly. Global governance has to be achieved through actions of national governments under different motives and constraints. We need to have an analytical tool that is capable of producing a global picture, yet with detailed country resolution. If the world is a better place now compared to 100 years ago in terms of p- capita income, this is due to the industrialization that continued throughout the 20th century. We entered the 21st century knowing that the human aspiration that translates into ever-increasing production may not be tenable in the long run. Sustainability of the global community is at stake. In contrast to inc- mental decision making through the market mechanism that should lead to some optimal state under some assumptions such as perfect knowledge, smooth movement of resources, no externalities, and so forth, we need to have an a- lytical tool to provide us with details of the future state of the world.

Policy failures in environment and development have been blamed on frag mented and eclectic policies and strategies. The 1992 United Nations Con ference on Environment and Development, the 'Earth Summit' in Rio de Janeiro, called therefore for an integrated approach in planning and policy making to achieve long-term sustainable growth and development. The Con ference also recognized in its action plan, the Agenda 21, that integrated poli cies need to be supported by integrated information, notably requiring the implementation of integrated environmental and economic accounting by its member States. During the preparations for the Rio Summit, scientists and practitioners of national accounting met in a Special Conference on Environmental Account ing, organized by the International Association for Research in Income and Wealth (IARIW) in Baden, Austria. Their aim was to explore the need for and methodologies of adjusting national accounts for environmental reasons. National accountants had faced mounting criticism that conventional accounting neglected new scarcities in natural capital, as well as the social cost of environmental degradation. The result of their deliberations was a draft manual, later issued by the United Nations Statistics Division (UNSD) as a handbook of Integrated Environmental and Economic Accounting."

This volume, available for the first time in paperback, is a standard work on the physical aspects of acoustics. Starting from first principles, the authors have successfully produced a unified and thorough treatment of the subjects of generation, propagation, absorption, reflection, and scattering of compressional waves in fluids, progressing to such topics as moving sound sources, turbulence, and wave-induced vibration of structures. Material is included on viscous and thermal effects, on the acoustics of moving media, on plasma acoustics, on nonlinear effects, and on the interaction between light and sound. Problems, with answers in many cases, are given at the end of each chapter. They contain extensions to further applications, thus enhancing the reference value of the book. Many of the examples worked out in the text and in the problem solutions were not previously published. Anyone familiar with calculus and vector analysis should be able to understand the mathematical techniques used here.