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Self-adjoint Extensions in Quantum Mechanics
by I. V. Tyutin D. M. Gitman B. L. VoronovThis exposition is devoted to a consistent treatment of quantization problems, based on appealing to some nontrivial items of functional analysis concerning the theory of linear operators in Hilbert spaces. The authors begin by considering quantization problems in general, emphasizing the nontriviality of consistent operator construction by presenting paradoxes to the naive treatment. It then builds the necessary mathematical background following it by the theory of self-adjoint extensions. By considering several problems such as the one-dimensional Calogero problem, the Aharonov-Bohm problem, the problem of delta-like potentials and relativistic Coulomb problemIt then shows how quantization problems associated with correct definition of observables can be treated consistently for comparatively simple quantum-mechanical systems. In the end, related problems in quantum field theory are briefly introduced. This well-organized text is most suitable for students and post graduates interested in deepening their understanding of mathematical problems in quantum mechanics. However, scientists in mathematical and theoretical physics and mathematicians will also find it useful.
Self-assembly and nanotechnology systems: design, characterization, and applications
by Yoon S. LeeA fundamental resource for understanding and developing effective self-assembly and nanotechnology systems Systematically integrating self-assembly, nanoassembly, and nanofabrication into one easy-to-use source, Self-Assembly and Nanotechnology Systems effectively helps students, professors, and researchers comprehend and develop applicable techniques for use in the field. Through case studies, countless examples, clear questions, and general applications, this book provides experiment-oriented techniques for designing, applying, and characterizing self-assembly and nanotechnology systems. Self-Assembly and Nanotechnology Systems includes: Techniques for identifying assembly building units Practical assembly methods to focus on when developing nanomaterials, nanostructures, nanoproperties, nanofabricated systems, and nanomechanics Algorithmic diagrams in each chapter for a general overview Schematics designed to link assembly principles with actual systems Hands-on lab activities This informative reference also analyzes the diverse origins and structures of assembly building units, segmental analysis, and selection of assembly principles, methods, characterization techniques, and predictive models. Complementing the author's previous conceptually based book on this topic, Self-Assembly and Nanotechnology Systems is a practical guide that grants practitioners not only the skills to properly analyze assembly building units but also how to work with applications to exercise and develop their knowledge of this rapidly advancing scientific field.
Self-determinable Development of Small Islands
by Masahide Ishihara Eiichi Hoshino Yoko FujitaThis book aims to clarify the present situation of the relations between small island countries and territories on the one hand and the great powers, mainland areas, and mega-islands on the other, and explores how small island countries and territories preserve and build their identity under globalization. This book is divided into five parts. The first part presents papers on issues that are related to Okinawa: the American military presence, the formation of a global human network, and the history of and language revitalization in Okinawa. The second part includes papers on security in East Asia and the Pacific Region: the history of and present issues in international relations within the South and East China Sea areas. The third part presents papers on economic issues and social developments on small islands. The fourth part deals with ocean policies and marine resource management in the Pacific Region by the United States, Australia, and Japan. Finally, the fifth part presents papers on the revitalization of three indigenous languages. All the chapters of the book are based on the achievements of the research project "Towards New Island Studies: The Ryukyus as an academic node between East Asia and Oceania" conducted by the International Institute for Okinawan Studies at the University of the Ryukyus. This 5-year project was funded by the Japanese Ministry of Education, Culture, Sports, Science and Technology and aimed to contribute academically to the creation of sustainable and self-determinable societies in small island regions. This work will be extremely useful and informative for readers in small island countries and territories and for researchers who are interested in small island issues to understand the current situation and who wish to consider effectual and feasible solutions.
Self-healing Materials: Bridging Physics, Chemistry, and Engineering for a Sustainable Future (Engineering Materials)
by Peeyush Phogat Shreya Sharma Soumya Rai Jahanvi ThakurThis book highlights the transformative potential of self-healing materials in addressing global challenges related to sustainability, durability, and efficiency across industries. By bridging the disciplines of physics, chemistry, and engineering, it provides a comprehensive exploration of self-healing mechanisms, material classifications, and cutting-edge applications in energy systems, biomedical devices, and infrastructure. The book also delves into the thermodynamics, kinetics, and biomimetic inspirations driving advancements in this field. With an emphasis on scalability, environmental impact, and future technologies, this resource equips researchers, engineers, and professionals with the knowledge to innovate and implement sustainable solutions. It is an essential guide for those aiming to contribute to a circular economy and design materials for a more resilient and eco-friendly future.
Self-organized Criticality and Predictability in Atmospheric Flows
by Amujuri Mary SelvamThis book presents a new concept of General Systems Theory and its application to atmospheric physics. It reveals that energy input into the atmospheric eddy continuum, whether natural or manmade, results in enhancement of fluctuations of all scales, manifested immediately in the intensification of high-frequency fluctuations such as the Quasi-Biennial Oscillation and the El-Nino–Southern Oscillation cycles. Atmospheric flows exhibit self-organised criticality, i.e. long-range correlations in space and time manifested as fractal geometry to the spatial pattern concomitant with an inverse power law form for fluctuations of meteorological parameters such as temperature, pressure etc. Traditional meteorological theory cannot satisfactorily explain the observed self-similar space time structure of atmospheric flows. A recently developed general systems theory for fractal space-time fluctuations shows that the larger-scale fluctuation can be visualised to emerge from the space-time averaging of enclosed small-scale fluctuations, thereby generating a hierarchy of self-similar fluctuations manifested as the observed eddy continuum in power spectral analyses of fractal fluctuations. The interconnected network of eddy circulations responds as a unified whole to local perturbations such as global-scale response to El-Nino events. The general systems theory model predicts an inverse power law form incorporating the golden mean τ for the distribution of space-time fluctuation patterns and for the power (variance) spectra of the fluctuations. Since the probability distributions of amplitude and variance are the same, atmospheric flows exhibit quantumlike chaos. Long-range correlations inherent to power law distributions of fluctuations are identified as nonlocal connection or entanglement exhibited by quantum systems such as electrons or photons. The predicted distribution is close to the Gaussian distribution for small-scale fluctuations, but exhibits a fat long tail for large-scale fluctuations. Universal inverse power law for fractal fluctuations rules out unambiguously linear secular trends in climate parameters.
Self-powered Energy Harvesting Systems for Health Supervising Applications (SpringerBriefs in Applied Sciences and Technology)
by Jordi Colomer-Farrarons Albert Álvarez-Carulla Pere Lluís Miribel CatalàThis book highlights the current and recent state-of-the-art developments in energy harvesting systems for health supervising applications. It explores the exciting potential of energy harvesting as a crosscutting field of research to intersect with other areas to envisage new products, solutions, and applications. Among all these new opportunities for synergy, there is a research area that fully matches the features offered by energy harvesting with its power supply's main needs- health supervising (HS), which consists of monitoring the health or operating conditions of anything, such as structures, buildings, public health, environment, etc. The book covers the hand in hand evolution towards a new paradigm: truly self-powered devices based on a single transducer acting as a sensor and as power source simultaneously and efficiently. This evolution is illustrated by the concept and implementation of novel state-of-the-art architecture for self-powered energy harvesting systems for applications that range from structural health monitoring to point-of-care medical devices.
Self-similarity in Walsh Functions and in the Farfield Diffraction Patterns of Radial Walsh Filters
by Lakshminarayan Hazra Pubali MukherjeeThe book explains the classification of a set of Walsh functions into distinct self-similar groups and subgroups, where the members of each subgroup possess distinct self-similar structures. The observations on self-similarity presented provide valuable clues to tackling the inverse problem of synthesis of phase filters. Self-similarity is observed in the far-field diffraction patterns of the corresponding self-similar filters. Walsh functions form a closed set of orthogonal functions over a prespecified interval, each function taking merely one constant value (either +1 or −1) in each of a finite number of subintervals into which the entire interval is divided. The order of a Walsh function is equal to the number of zero crossings within the interval. Walsh functions are extensively used in communication theory and microwave engineering, as well as in the field of digital signal processing. Walsh filters, derived from the Walsh functions, have opened up new vistas. They take on values, either 0 or π phase, corresponding to +1 or -1 of the Walsh function value.
Selfie Democracy: The New Digital Politics of Disruption and Insurrection
by Elizabeth LoshHow politicians&’ digital strategies appeal to the same fantasies of digital connection, access, and participation peddled by Silicon Valley.Smartphones and other digital devices seem to give us a direct line to politicians. But is interacting with presidential tweets really a manifestation of digital democracy? In Selfie Democracy, Elizabeth Losh examines the unintended consequences of politicians&’ digital strategies, from the Obama campaign&’s pioneering construction of an online community to Trump&’s Twitter dominance. She finds that politicians who use digital media appeal to the same fantasies of digital connection, access, and participation peddled by Silicon Valley. Meanwhile, smartphones and social media don&’t enable participatory democracy so much as they incentivize citizens to perform attention-getting acts of political expression. Losh explores presidential rhetoric casting digital media as tools of democracy, describes the conflation of gender and technology that contributed to Hillary Clinton&’s defeat in 2016, chronicles the Biden campaign&’s early digital stumbles in 2020, and recounts the TikTok campaign that may have spoiled a Trump rally. She shows that although Obama and Trump may seem diametrically opposed in both style and substance, they both used mobile digital media in ways that reshaped the presidency and promised a new kind of digital democracy. Obama used data and digital media to connect to citizens without intermediaries; Trump followed this strategy to its most extreme conclusion. What were the January 6 insurrectionists doing, as they livestreamed themselves and their cohorts attacking the Capitol, but practicing their own brand of selfie democracy?
Selfie: Poetry, Social Change & Ecological Connection
by James SherrySelfie: Poetry, Social Change & Ecological Connection presents the first general theory that links poetry in environmental thought to poetry as an environment. James Sherry accomplishes this task with a network model of connectivity that scales from the individual to social to environmental practices. Selfie demonstrates how parts of speech, metaphor, and syntax extend bidirectionally from the writer to the world and from the writer inward to identities that promote sustainable practices. Selfie shows how connections in the biosphere scale up from operating within the body, to social structures, to the networks that science has identified for all life. The book urges readers to construct plural identifications rather than essential claims of identity in support of environmental diversity.
Selling Science in the Age of Newton: Advertising and the Commoditization of Knowledge (Science, Technology And Culture, 1700-1945 Ser.)
by Jeffrey R. WigelsworthSelling Science in the Age of Newton explores an often ignored avenue in the popularization of science. It is an investigation of how advertisements in London newspapers (from approximately 1687 to 1727) enticed consumers to purchase products relating to science: books, lecture series, and instruments. London's readers were among the first in Europe to be exposed to regular newspapers and the advertisements contained in them. This occurred just as science began to captivate the nation's imagination due, in part, to Isaac Newton's rising popularity following the publication of his Principia (1687). This unique moment allows us to see how advertising helped shape the initial public reception of science. This book fills a substantial gap in our understanding of science and the culture in which it developed by examining the medium of advertising and its function in the discourse of both early-modern science and commerce. It answers questions such as: what happens to science once it is a commodity; how are consumers tempted to purchase science amidst a sea of other commodities; how is the reading public encouraged to give social acceptance to facts of nature; and how did marketing campaigns craft newspapers readers into a source of validation for the items of science advertised? In an age where the production of scientific knowledge increasingly relied upon sales to many rather than the endorsement of a single wealthy patron, marketing was the key to success.
Selling Science: Polio and the Promise of Gamma Globulin
by Stephen E. MawdsleyToday, when many parents seem reluctant to have their children vaccinated, even with long proven medications, the Salk vaccine trial, which enrolled millions of healthy children to test an unproven medical intervention, seems nothing short of astonishing. In Selling Science, medical historian Stephen E. Mawdsley recounts the untold story of the first large clinical trial to control polio using healthy children--55,000 healthy children--revealing how this long-forgotten incident cleared the path for Salk's later trial. Mawdsley describes how, in the early 1950s, Dr. William Hammon and the National Foundation for Infantile Paralysis launched a pioneering medical experiment on a previously untried scale. Conducted on over 55,000 healthy children in Texas, Utah, Iowa, and Nebraska, this landmark study assessed the safety and effectiveness of a blood component, gamma globulin, to prevent paralytic polio. The value of the proposed experiment was questioned by many prominent health professionals as it harbored potential health risks, but as Mawdsley points out, compromise and coercion moved it forward. And though the trial returned dubious results, it was presented to the public as a triumph and used to justify a federally sanctioned mass immunization study on thousands of families between 1953 and 1954. Indeed, the concept, conduct, and outcome of the GG study were sold to health professionals, medical researchers, and the public at each stage. At a time when most Americans trusted scientists, their mutual encounter under the auspices of conquering disease was shaped by politics, marketing, and at times, deception. Drawing on oral history interviews, medical journals, newspapers, meeting minutes, and private institutional records, Selling Science sheds light on the ethics of scientific conduct, and on the power of marketing to shape public opinion about medical experimentation.
Seltene Lungenerkrankungen
by Felix Jf Herth Michael Kreuter Ulrich Costabel Detlef KirstenDieses Buch schließt eine Lücke und erspart mühsame Recherchearbeit. Das interdisziplinäre Herausgeber- und Autorenteam bestehend aus Pneumologen, Rheumatologen Radiologen, und Pathologen stellt seltene Erkrankungen der Lunge übersichtlich und systematisch nach den folgenden Kriterien dar: Ätiologie, Epidemiologie, Klinik, Diagnostik, Pathologie, Radiologie, Therapie und Prognose. Ob idiopathische interstitielle Pneumonien, Sarkoidose, Lungenbeteiligungen bei Kollagenosen, Lymphangiolyomyomatose, Alveolarproteinose, eosinophile Pneumonien, Lungenemphysem bei Alpha-1 Antitrypsinmangels, Bronchiolitiden , Mucoviszidose oder anderen seltenen Erkrankungen, der Leser erhält praxisnahe Antworten auf seine Fragen von bekannten Experten ihres Fachgebietes. Die 2. Auflage wurde komplett aktualisiert und um folgende Themen erweitert: Seltene berufsbezogene Lungenerkrankungen, seltene Infekte und Zwerchfellparese.
Seltenerdmetalle: Eine Reise durch das Periodensystem (essentials)
by Hermann SiciusHermann Sicius bringt dem Leser in knapper Form alle wichtigen Informationen rund um eine wichtige Klasse metallischer Rohstoffe nahe. Die insgesamt achtzehn Metalle der Lanthanoide (Seltenerdmetalle) sowie der dritten Nebengruppe sind nur einem kleinen Teil der Oeffentlichkeit bekannt, aber von großer Bedeutung für viele zukünftige Technologien.
Sem ar: A corrida da ciência para derrotar um vírus mortal
by David QuammenDavid Quammen, um dos mais conceituados jornalistas científicos, traz-nos toda a verdade sobre o SARS-CoV-2, uma narrativa cativante e essencial para perceber a origem da pandemia que moldou a atualidade. Em 2020, o hemisfério ocidental foi surpreendido por um novo coronavírus e uma crise pandémica com consequências globais. No entanto, para os cientistas que conheciam e estudavam os vírus zoonóticos, o aparecimento do SARS-CoV-2 não foi inesperado. Há muito que alertavam inequivocamente para a probabilidade muito elevada de uma pandemia.Com base em entrevistas a mais de 90 virologistas, epidemiologistas e outras autoridades, David Quammen, um dos mais reputados jornalistas científicos da atualidade, explora as consequências da ação humana na passagem do vírus dos animais para a nossa espécie e analisa com objetividade as hipóteses sobre a sua origem, rejeitando conspirações e teorias pouco fundamentadas. Explica ainda como é provável que os humanos tenham de adaptar-se para conviver em permanência com o SARS-CoV-2, a circular entre nós e a atormentar-nos com as suas intermináveis mutações. Sem ar reflete o espírito colaborativo da ciência, ao traçar um retrato fulgurante do esforço que uniu a comunidade científica em todo o mundo para decifrar a natureza do vírus que redefiniu a atualidade, parar a sua propagação e impedir que se repita. Os elogios da crítica: «Empolgante e assustador. Um relato apaixonado e esclarecedor sobre a crise definidora da atualidade.» The New York Times «Sem ar, tal como o vírus que retrata, é o culminar dramático da ideia […] de que a história da ecologia viral, na sua vertente científica, poderá facilmente tornar-se na maior história do planeta Terra.» The Atlantic «Três anos depois do início da pandemia, Quammen, prolífero autor e jornalista científico, desvela os mais variados detalhes sobre o esforço para investigar a propagação da covid-19 e identificar o que a tornou tão ameaçadora… Uma crónica de investigação científica, escrita de modo envolvente.»The Wall Street Journal «Sem ar apresenta uma abrangente história científica da pandemia, ligando as peças do puzzle que, à época, pareciam tão desconexas.» Science News «Uma nova história credível da covid-19 e dos seus antecessores… [Quammen] constrói um retrato exímio da evolução viral que culminou na covid-19. Informação perturbadora sobre saúde pública comunicada com brilhantismo por um perito.» Kirkus Reviews «Uma leitura essencial para quem queira perceber melhor a pandemia.» Publishers Weekly«Há poucos escritores que consigam compreender as cadeias de aminoácidos que dão a estes vírus os seus códigos particulares, muito menos os que conseguem relacioná-los com outros vírus SARS. E são ainda mais raros os que têm os dons literários necessários para tornar a genómica compreensível para um leigo. Felizmente, David Quammen […] é um deles.» The Guardian
Semantic Web and Web Science
by Guilin Qi Wolfgang Nejdl Dongyan Zhao Hai-Tao Zheng Juanzi LiThe book will focus on exploiting state of the art research in semantic web and web science. The rapidly evolving world-wide-web has led to revolutionary changes in the whole of society. The research and development of the semantic web covers a number of global standards of the web and cutting edge technologies, such as: linked data, social semantic web, semantic web search, smart data integration, semantic web mining and web scale computing. These proceedings are from the 6th Chinese Semantics Web Symposium.
Semantically Based Clinical TCM Telemedicine Systems
by Allan K. Y. Wong Jackei H. K. Wong Wilfred W. K. Lin Tharam S. Dillon Elizabeth J. ChangRecent years have seen the development of two significant trends namely: the adoption of some Traditional Chinese Medicine Practices into mainstream Allopathic Western Medicine and the advent of the internet and broad band networks leading to an increased interest in the use of Telemedicine to deliver medical services. In this book, we see the convergence of these two trends leading to a semantically-based TCM Telemedicine system that utilizes an ontology to provide sharable knowledge in the TCM realm to achieve this. The underpinning research required the development of a three-layer architecture and an Ontology of the TCM knowledge. As TCM knowledge like all medical knowledge is not frozen in time it was important to develop an approach that would allow evolution of the Ontology when new evidence became available. In order for the system to be practically grounded it was important to work with an industry partner PuraPharm Group/HerbMiners Informatics Limited. This partnership was initiated through Professor Allan Wong and the Chairman of PuraPharm Group Mr. Abraham Chan. This led to the system being utilized in more than 20 Mobile Clinics in Hong Kong and 300 Hospitals in China. In order for these different deployments of the system to be coherent with the main core Ontology, it was necessary for us to develop an Ontology Driven Software System Generation approach.
Semantics and the Ontology of Number (Elements in the Philosophy of Mathematics)
by Eric SnyderWhat are the meanings of number expressions, and what can they tell us about questions of central importance to the philosophy of mathematics, specifically 'Do numbers exist?' This Element attempts to shed light on this question by outlining a recent debate between substantivalists and adjectivalists regarding the semantic function of number words in numerical statements. After highlighting their motivations and challenges, I develop a comprehensive polymorphic semantics for number expressions. I argue that accounting for the numerous meanings and how they are related leads to a strengthened argument for realism, one which renders familiar forms of nominalism highly implausible.
Semantics as Science
by Richard K. LarsonAn introductory linguistics textbook that takes a novel approach: studying linguistic semantics as an exercise in scientific theory construction.This introductory linguistics text takes a novel approach, one that offers educational value to both linguistics majors and nonmajors. Aiming to help students not only grasp the fundamentals of the subject but also engage with broad intellectual issues and develop general intellectual skills, Semantics as Science studies linguistic semantics as an exercise in scientific theory construction. Semantics offers an excellent medium through which to acquaint students with the notion of a formal, axiomatic system—that is, a system that derives results from a precisely articulated set of assumptions according to a precisely articulated set of rules. The book develops semantic theory through the device of axiomatic T-theories, first proposed by Alfred Tarski more than eighty years ago, introducing technical elaboration only when required. It adopts Japanese as its core object of study, allowing students to explore and investigate the real empirical issues arising in the context of non-English structures, a non-English lexicon and non-English meanings. The book is structured as a laboratory science text that poses specific empirical questions, with 25 short units, each of which can be covered in one class session. The layout is engagingly visual, designed to help students understand and retain the material, with lively illustrations, examples, and quotations from famous scholars.
Semaphorin Signaling
by Jonathan R. TermanThis volume arranged into three sections describes biochemical, in vitro, and in vivo protocols on Semaphorins. Chapters focus on approaches that would allow the novice to study Semaphorins and employ robust assays to characterize mechanisms of action. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Authoritative and cutting-edge, Semaphorin Signaling: Methods and Protocols aims to ensure successful results in the further study of this vital field.
Semaphorins
by Atsushi KumanogohThis book presents the current concepts of semaphorin biology. In the early 1990s, semaphorins were originally identified as axon guidance cues that function during neuronal development. However, cumulative findings have clarified that they have diverse functions in many physiological processes, including cardiogenesis, angiogenesis, vasculogenesis, osteoclastogenesis, retinal homeostasis, and immune regulation. Additionally, they have been implicated in the pathogenesis of various human diseases, including tumorigenesis/tumor metastasis, neuroregenerative diseases, retinal degeneration, irregular pulse/sudden death, and immune disorders. Based on this current research background, the book covers the essential state-of-the-art findings for basic scientists in biochemistry, molecular biology, neuroscience, developmental biology, and structural biology, as well as for physicians in neurology, cardiology, oncology, orthopedic surgery, otorhinolaryngology, ophthalmology, allergology, and rheumatology.
Semi-Enclosed Seas: Exchange of environmental experiences between Mediterranean and Caribbean countries
by Paolo Fabbri Giuliano FierroProceedings of the International Meeting on UNEP's Regional Programmes in Mediterranean and Caribbean Seas, Genoa, Italy, 12-14 February 1992 which concentrated on three issues of particular interest: water quality, coastal zone management, sea-level rise and the risks and consequences of erosion and flooding.
Semi-Field Methods for the Environmental Risk Assessment of Pesticides in Soil
by Jörg Römbke Andreas Schaeffer Martina Roß-Nickoll Fred Heimbach Simon P. Hoy Paul J. van den Brink Frank M.W. de Jong José P. SousaBased on discussions at the 2007 SETAC Europe PERAS Workshop in Coimbra, Semi-Field Methods for the Environmental Risk Assessment of Pesticides in Soil presents a timely summary of state-of-the-art higher-tier terrestrial risk assessment of plant protection products (PPPs). Influential regulators, academics, and industry scientists provide a compre
Semi-Solid Processing of Aluminum Alloys
by Shahrooz Nafisi Reza GhomashchiThis book describes in great detail the semi-solid processing of aluminum alloys. The authors examine the fundamentals of semi-solid metal processing, provide guidelines for research, illustrate the tools that are employed, and explain the measured parameters for semi-solid processing characterization.
Semi-aquatic Mammals: Ecology and Biology
by Glynnis A. HoodSemi-aquatic mammals are some of the rarest and most endangered mammals on earth. What binds them together in the minds of biologists, despite their diverse taxa and body forms, are evolutionary traits that allow them to succeed in two worlds—spending some time on land and some in the water. Semi-aquatic Mammals fills a crucial void in the literature by highlighting the important ecological roles and curious biology of these remarkable animals.In this unique book, wildlife ecologist Glynnis A. Hood presents the first comprehensive examination of a global suite of 140 freshwater semi-aquatic mammals. Each one has overcome the distinct ecological challenges of thriving in both aquatic and terrestrial habitats as part of everyday life. Covering millions of years, Hood's exploration begins with the extinct otter-like Buxolestes and extends to consider the geographical, physical, behavioral, and reproductive traits of its present-day counterparts. Hood explains how semi-aquatic mammals are able to navigate a viscous environment with almost no resistance to heat loss, reveals how they maintain the physical skills necessary to avoid predation and counter a more thermally changeable environment, and describes the array of adaptations that facilitate success in their multifaceted habitats. She also addresses specific conservation challenges faced by these mammals.Her analysis takes readers to the haunts of intriguing semi-aquatic mammals from around the world,• introducing the "paradoxical platypus," an Australian egg-laying monotreme that detects prey through electroreception• venturing into the swamps and mangroves of Southeast Asia, where fishing cats wave their paws above the water's surface to lure prey• trawling the streams and lakes of South America, where the female water opossum uses its backward-facing pouch to keep her babies warm during deep dives• spending time with species that engineer freshwater habitats into more productive and complex systems, including North American beavers and Africa's common hippopotamusFeaturing award-winning artist Meaghan Brierley's stunning illustrations throughout, Semi-aquatic Mammals is an unparalleled reference on some of the world's most tenacious and fascinating mammals.
Semiarid Soil and Water Conservation
by FinkelIn this volume, the erosion and conservation measures discussed are, for the most part, those under unirrigated agriculture. The use of irrigation could cause significant changes in the growing seasons, and in the agricultural calendar, especially in the warmer climates where temperature is not a limiting factor. It is further noted that much of the material in this volume has been prepared with the developing countries of the so-called Third World in mind. In many of these countries there is a dearth of basic data, such as long-term hydrological records, detailed soil and topographic surveys, and experimental results for various types of erosion control measures. Some design procedures cannot be imitated or copied directly from those of the technologically more advanced countries. Consequently, emphasis will be placed, wherever possible, upon simple empirical methods of design, and approximate solutions within the limitations of the available data, technical possibilities, and financial resources of the Third World countries. Much of the numerical data and calculations will be presented in the metric system.