How can a scientist or engineer synthesize and utilize polymers to solve our daily problems? This introductory text, aimed at the advanced undergraduate or graduate student, provides future scientists and engineers with the fundamental knowledge of polymer design and synthesis to achieve specific properties required in everyday applications. In the first five chapters, this book discusses the properties and characterization of polymers, since designing a polymer initially requires us to understand the effects of chemical structure on physical and chemical characteristics. Six further chapters discuss the principles of polymerization reactions including step, radical chain, ionic chain, chain copolymerization, coordination and ring opening. Finally, material is also included on how commonly known polymers are synthesized in a laboratory and a factory. This book is suitable for a one semester course in polymer chemistry and does not demand prior knowledge of polymer science.

1.1. INTRODUCTION Plastic covering, either framed or floating, is now used worldwide to protect crops from unfavorable growing conditions, such as severe weather and insects and birds. Protected cultivation in the broad sense, including mulching, has been widely spread by the innovation of plastic films. Paper, straw, and glass were the main materials used before the era of plastics. Utilization of plastics in agriculture started in the developed countries and is now spreading to the developing countries. Early utilization of plastic was in cold regions, and plastic was mainly used for protection from the cold. Now plastic is used also for protection from wind, insects and diseases. The use of covering techniques started with a simple system such as mulching, then row covers and small tunnels were developed, and finally plastic houses. Floating mulch was an exception to this sequence: it was introduced rather recently, although it is a simple structure. New development of functional and inexpensive films triggered widespread use of floating mulch. Table 1.1. The use a/plastic mulch in the world (after Jouet, 2001).

Environmental regulation in China is not really different from that in the rest of the world, except that environmental authorities are relatively new and less established. In order to understand why corporate environmental performance has hardly improved despite the existing regulatory framework, empirical research on high-level executives' perceptions of environmental protection is essential. This unique book analyses and interprets Chinese managers' perceptions of environmental management and regulatory enforcement practices in Chinese enterprises. Most importantly, it identifies the bottlenecks to environmental protection in Chinese firms. It includes a detailed analysis of the needs for management training (for example, CEO and executive development and MBA education) in China and presents a roadmap of how they can be met. Finally, it presents two case studies that illustrate how Chinese corporations currently react to a wide range of different environmental challenges, including hardening regulatory pressure, competition and lack of capital. Based on an innovative research project sponsored by the UNESCO/UNDP offices in Beijing and undertaken by the Institute for Management Development (IMD), Lausanne, Switzerland and the Business School of the Academy of Science and Technology (USTC), Hefei, China, Greening Chinese Business provides the first hard empirical evidence of how Chinese managers view environmental protection. Over 300 companies-both state-owned enterprises and SMEs-took part in the research. Key findings includeAround 70% of managers surveyed admit moderate or even heavy environmental impact (this is a subjective assessment without an external benchmark). Furthermore, they indicate that the lack of environmental performance is primarily due to insufficient managerial expertise, capital and employment-related protectionism. Managers hesitate to take necessary action to upgrade technical equipment, because, although decreasing pollution, upgrading would lead to lay-offs that, in turn, would diminish social stability. Since the latter is first priority in China, managers fear loss of their companies'-and, attached to that, their personal-image, which plays a very important role in Chinese culture. Regulative enforcement has been strong enough to put environmental management on the "to do" lists of Chinese managers. Nevertheless, managers criticise existing enforcement practices as being too lax and untransparent (due to local protectionism, bribery and lack of expertise in the enforcement institutions). Managers consider environmental functionaries-the Chinese equivalent of an environmental protection agency-and the government to be the most important environmental stakeholders. This is a clear sign for their predominantly reactive attitude towards environmental protection: few Chinese companies are going beyond compliance and pioneering integrated approaches to pollution prevention. The research shows similarities between current Chinese company approaches and the "state of the art" in industrial centres of OECD countries such as Germany in the 1960s. Apart from a lack of capital, managers cite a lack of expertise-managerial more than technical-as the main obstacle to "greening" their organisations. Environmental management programmes need to be developed: competence-building should start with CEOs and executives. Greening Chinese Business will aid readers to understand how: Chinese managers perceive and react to the increasing (more external than internal) pressure to improve environmental protection; understand the regulatory, public and business environment in which Chinese managers make decisions about environmental protection; understand the potential for improvement of this regulatory, public and business environment, either as a manager or an external stakeholder and develop strategies that lead to improved stakeholder relationships and, consequently, to competitive advantage; understand the urgent need to develop environmental management practices in Chinese companies in areas such as EMSs and supply chain management; and identify the resources available for management development in China.

This book argues for the explanatory autonomy of the biological sciences. It does so by showing that scientific explanations in the biological sciences cannot be reduced to explanations in the fundamental sciences such as physics and chemistry and by demonstrating that biological explanations are advanced by models rather than laws of nature. To maintain the explanatory autonomy of the biological sciences, the author argues against explanatory reductionism and shows that explanation in the biological sciences can be achieved without reduction. Then, he demonstrates that the biological sciences do not have laws of nature. Instead of laws, he suggests that biological models usually do the explanatory work. To understand how a biological model can explain phenomena in the world, the author proposes an inferential account of model explanation. The basic idea of this account is that, for a model to be explanatory, it must answer two kinds of questions: counterfactual-dependence questions that concern the model itself and hypothetical questions that concern the relationship between the model and its target system. The reason a biological model can answer these two kinds of questions is due to the fact that a model is a structure, and the holistic relationship between the model and its target warrants the hypothetical inference from the model to its target and thus helps to answer the second kind of question. The Explanatory Autonomy of the Biological Sciences will be of interest to researchers and advanced students working in philosophy of science, philosophy of biology and metaphysics.

How can a scientist or engineer synthesize and utilize polymers to solve our daily problems? This introductory text, aimed at the advanced undergraduate or graduate student, provides future scientists and engineers with the fundamental knowledge of polymer design and synthesis to achieve specific properties required in everyday applications. In the first five chapters, this book discusses the properties and characterization of polymers, since designing a polymer initially requires us to understand the effects of chemical structure on physical and chemical characteristics. Six further chapters discuss the principles of polymerization reactions including step, radical chain, ionic chain, chain copolymerization, coordination and ring opening. Finally, material is also included on how commonly known polymers are synthesized in a laboratory and a factory. This book is suitable for a one semester course in polymer chemistry and does not demand prior knowledge of polymer science.

1.1. INTRODUCTION Plastic covering, either framed or floating, is now used worldwide to protect crops from unfavorable growing conditions, such as severe weather and insects and birds. Protected cultivation in the broad sense, including mulching, has been widely spread by the innovation of plastic films. Paper, straw, and glass were the main materials used before the era of plastics. Utilization of plastics in agriculture started in the developed countries and is now spreading to the developing countries. Early utilization of plastic was in cold regions, and plastic was mainly used for protection from the cold. Now plastic is used also for protection from wind, insects and diseases. The use of covering techniques started with a simple system such as mulching, then row covers and small tunnels were developed, and finally plastic houses. Floating mulch was an exception to this sequence: it was introduced rather recently, although it is a simple structure. New development of functional and inexpensive films triggered widespread use of floating mulch. Table 1.1. The use a/plastic mulch in the world (after Jouet, 2001).