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Sea urchins and sea cucumbers are highly sought after delicacies growing in popularity globally. The demand for these species is rapidly outpacing natural stocks, and researchers and seafood industry personnel are now looking towards aquaculture as a means of providing a sustainable supply of these organism. Echinoderm Aquaculture is a practical reference on the basic biology and current culture practices for a wide range of geographically diverse echinoderm species. Echinoderm Aquaculture begins by examining the basic ecology and biology of sea urchins and sea cucumbers as well as the breadth of uses of these organisms as a source of food and bioactive compound. Subsequent chapters delineate the specific species of interest invarious geographic regions from around the world. Together, chapters provide a comprehensive coverage of culture practices. Echinoderm Aquaculture is a practical reference for researchers and industry personnel, and will serve as an invaluable resource to this rapidly growing segment of the aquaculture industry.
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Sea Urchins: Biology and Ecology, Fourth Edition, Volume 43 expands its coverage to include the entire class of Echinoidea, making this new edition an authoritative reference of the entire class of species. This is a valuable resource that will help readers gain a deep understanding of the basic characteristics of sea urchins, the basis of the great variation that exists in sea urchins, and how sea urchins are important components of marine ecosystems. Updated coverage includes sections on reproduction, metabolism, endocrinology, larval ecology, growth, digestion, carotenoids and disease. - Includes pertinent tables and graphs within chapters to visually summarize information - Provides case studies with research applications to provide potential solutions - Includes the entire class of Echinoidea and the effect of climate change on the biology and ecology of the species
A theoretical and empirical examination of wage differentials findsthat traditional theories of competition do not explain why workers with identical skills are paid differently.
This book examines unemployment insurance policy through a survey, taking stock of the theoretical work in the field of labor economics. It closely follows and assesses developments in the modelling of optimal unemployment insurance (UI) policies, beginning with the initial analytical findings produced in the second half of the 1970s. A main part of the survey is devoted to the two basic strands of analysis about, respectively, the optimal level of UI benefits and the optimal time profile of UI policy. The book has two different objectives. The first is to provide an essential summary of the individual models, with the intention of underscoring how a number of specific messages for the polic...
This volume uses cutting-edge theory and empirical analysis of channels of international interaction to build new knowledge about strategies of entrepreneurs, domestic and multinational firms, governments, and international organizations facing increasing globalization. The ongoing process of globalization implies the continuing expansion and intensification of economic, political, social, cultural and judicial relations across borders. It is furthered by reductions in transportation and communication costs, the rise of new information technologies, such as the internet, and liberalizations in the markets for goods, services, labor, capital, and technology. Globalization presents new opportunities to some, but risks and threats to others. The volume presents new research and findings by leading scholars on international trade, labor markets, financial markets, economic integration, political science, law, management, the humanities, developing countries, and international relations.
"We develop a model of gross job and worker flows and use it to study how the wages, permanent incomes, and employment status of individual workers evolve over time. Our model helps explain various features of labor markets, such as the size and persistence of the changes in income that workers experience due to displacements or job-to-job transitions, the length of job tenures and unemployment duration, and the amount of worker turnover in excess of job reallocation. We also examine the effects that labor market institutions and public policy have on the gross flows, as well as on the resulting wage distribution, employment, and aggregate output in the equilibrium. From a theoretical standpoint, we study the extent to which the competitive equilibrium achieves an efficient allocation of resources"--Abstract.