Methods

This book is an authoritative and comprehensive account of the principles and practice of NMR spectroscopy of solids as applied to polymeric materials to determine their structure and dynamics at a molecular level. NMR spectroscopy has been applied to the characterization of polymers in solid state for over 40 years. The past few decades have seen the development of many new NMR capabilities, including high-resolution techniques for solids, multi-dimensional methods, deuterium NMR and others. All of these developments have contributed to a dramatic increase in the power and applicability of NMR for the characterization, at a molecular level, of the dynamics and structural organization of polymeric solids. The applications chapters emphasize the polymer types and properties. The authors have included an introduction to all the main principles of the technique involved in its application to solid polymers. Rigorous and detailed analytical treatment of all main areas is also available.

The science called 'harmonics' was one of the major intellectual enterprises of Greek antiquity. Ptolemy's treatise seeks to invest it with new scientific rigour; its consistently sophisticated procedural self-awareness marks it as a key text in the history of science. This book is a sustained methodological exploration of Ptolemy's project. After an analysis of his explicit pronouncements on the science's aims and the methods appropriate to it, it examines Ptolemy's conduct of his investigation in detail, concluding that despite occasional uncertainties, the declared procedure is followed with remarkable fidelity. Ptolemy pursues tenaciously his novel objective of integrating closely the project's theoretical and empirical phases and shows astonishing mastery of the concept, the design and the conduct of controlled experimental tests. By opening up this neglected text to historians of science, the book aims to provide a point of departure for wider studies of Greek scientific method.

Although stress occurs at every stage of life, much research studies its effects over short-term periods, typically within circumscribed life stages. Little attention has been given to the possibilities that the consequences or impact of stress depend critically on the timing in the life course in which the individual is exposed to the stress, and that the sequence of prior stressors acts as a context for these effects. This book attempts to map the influence of early stressful experiences on later life outcomes, studying the trajectories of stressors over the life course. It examines the ramifications of stressful events at key life-course transition points, and explores the diversity of outcomes for individuals who have suffered through trauma. Finally, the book suggests methods for study of stress and adversity through the life course, where issues of timing, ordering and sequencing of stressors are crucial.

So much has to be crammed into today's biology courses that basic information on animal groups and their evolutionary origins is often left out. This is particularly true for the invertebrates. The second edition of Janet Moore's An Introduction to the Invertebrates fills this gap by providing a short updated guide to the invertebrate phyla, looking at their diverse forms, functions and evolutionary relationships. This book first introduces evolution and modern methods of tracing it, then considers the distinctive body plan of each invertebrate phylum showing what has evolved, how the animals live, and how they develop. Boxes introduce physiological mechanisms and development. The final chapter explains uses of molecular evidence and presents an up-to-date view of evolutionary history, giving a more certain definition of the relationships between invertebrates. This user-friendly and well-illustrated introduction will be invaluable for all those studying invertebrates.

One of the main themes that has emerged from behavioral decision research during the past three decades is the view that people's preferences are often constructed in the process of elicitation. This idea is derived from studies demonstrating that normatively equivalent methods of elicitation (e.g., choice and pricing) give rise to systematically different responses. These preference reversals violate the principle of procedure invariance that is fundamental to all theories of rational choice. If different elicitation procedures produce different orderings of options, how can preferences be defined and in what sense do they exist? This book shows not only the historical roots of preference construction but also the blossoming of the concept within psychology, law, marketing, philosophy, environmental policy, and economics. Decision making is now understood to be a highly contingent form of information processing, sensitive to task complexity, time pressure, response mode, framing, refe

Why do states delegate certain tasks and responsibilities to international organizations rather than acting unilaterally or cooperating directly? Furthermore, to what extent do states continue to control IOs once authority has been delegated? Examining a variety of different institutions including the World Trade Organization, the United Nations and the European Commission, this book explores the different methods that states employ to ensure their interests are being served, and identifies the problems involved with monitoring and managing IOs. The contributors suggest that it is not inherently more difficult to design effective delegation mechanisms at international level than at domestic level and, drawing on principal-agent theory, help explain the variations that exist in the extent to which states are willing to delegate to IOs. They argue that IOs are neither all evil nor all virtuous, but are better understood as bureaucracies that can be controlled to varying degrees by their

This book is about the coordinate-free, or geometric, approach to the theory of linear models; more precisely, Model I ANOVA and linear regression models with non-random predictors in a finite-dimensional setting. This approach is more insightful, more elegant, more direct, and simpler than the more common matrix approach to linear regression, analysis of variance, and analysis of covariance models in statistics. The book discusses the intuition behind and optimal properties of various methods of estimating and testing hypotheses about unknown parameters in the models. Topics covered range from linear algebra, such as inner product spaces, orthogonal projections, book orthogonal spaces, Tjur experimental designs, basic distribution theory, the geometric version of the Gauss-Markov theorem, optimal and non-optimal properties of Gauss-Markov, Bayes, and shrinkage estimators under assumption of normality, the optimal properties of F-test, and the analysis of covariance and missing observa

One of the main themes that has emerged from behavioral decision research during the past three decades is the view that people's preferences are often constructed in the process of elicitation. This idea is derived from studies demonstrating that normatively equivalent methods of elicitation (e.g., choice and pricing) give rise to systematically different responses. These preference reversals violate the principle of procedure invariance that is fundamental to all theories of rational choice. If different elicitation procedures produce different orderings of options, how can preferences be defined and in what sense do they exist? This book shows not only the historical roots of preference construction but also the blossoming of the concept within psychology, law, marketing, philosophy, environmental policy, and economics. Decision making is now understood to be a highly contingent form of information processing, sensitive to task complexity, time pressure, response mode, framing, refe

Why do states delegate certain tasks and responsibilities to international organizations rather than acting unilaterally or cooperating directly? Furthermore, to what extent do states continue to control IOs once authority has been delegated? Examining a variety of different institutions including the World Trade Organization, the United Nations and the European Commission, this book explores the different methods that states employ to ensure their interests are being served, and identifies the problems involved with monitoring and managing IOs. The contributors suggest that it is not inherently more difficult to design effective delegation mechanisms at international level than at domestic level and, drawing on principal-agent theory, help explain the variations that exist in the extent to which states are willing to delegate to IOs. They argue that IOs are neither all evil nor all virtuous, but are better understood as bureaucracies that can be controlled to varying degrees by their

Christians traditionally think of Satan as Lucifer, God's enemy, who rebelled against Him out of pride and then caused Adam and Eve to sin. But, as Kelly shows, this portrayal is not biblical but a scenario invented by the early Fathers of the Church which became the 'New Biography of Satan'. The 'Original Biography' must be reconstructed from the New Testament where Satan is the same sort of celestial functionary we see in the Book of Job - appointed to govern the world, specifically to monitor and test human beings. But he is brutal and deceitful in his methods, and Jesus predicts that his rule will soon come to an end. Kelly traces the further developments of the 'New Biography': humankind's inherited guilt, captivity by Satan, and punishment in Hell at his hands. This profile of Satan remains dominant, but Kelly urges a return to the 'Original Biography of Satan'.

Christians traditionally think of Satan as Lucifer, God's enemy, who rebelled against Him out of pride and then caused Adam and Eve to sin. But, as Kelly shows, this portrayal is not biblical but a scenario invented by the early Fathers of the Church which became the 'New Biography of Satan'. The 'Original Biography' must be reconstructed from the New Testament where Satan is the same sort of celestial functionary we see in the Book of Job - appointed to govern the world, specifically to monitor and test human beings. But he is brutal and deceitful in his methods, and Jesus predicts that his rule will soon come to an end. Kelly traces the further developments of the 'New Biography': humankind's inherited guilt, captivity by Satan, and punishment in Hell at his hands. This profile of Satan remains dominant, but Kelly urges a return to the 'Original Biography of Satan'.

The debate over the age of the Earth has been ongoing for over two thousand years, and has pitted physicists and astronomers against biologists, and religious philosophers against geologists. The Chronologers' Quest tells the fascinating story of our attempts to determine the age of the Earth. This book investigates the many novel methods used in the search for the Earth's age, from James Ussher and John Lightfoot examining biblical chronologies, and from Comte de Buffon and Lord Kelvin determining the length of time for the cooling of the Earth, to the more recent investigations of Arthur Holmes and Clair Patterson into radioactive dating of rocks and meteorites. The Chronologers' Quest is a readable account of the measurement of geological time. It will be of great interest to a wide range of readers, from those with little scientific background to students and scientists in a wide range of the Earth sciences.

Samples used in social and commercial surveys, especially of the general population, are usually less random (often by design) than many people using them realise. Unless it is understood, this 'non-randomness' can compromise the conclusions drawn from the data. This book introduces the challenges posed by less-than-perfect samples, giving background knowledge and practical guidance for those who have to deal with them. It explains why samples are, and sometimes should be, non-random in the first place; how to assess the degree of non-randomness; when correction by weighting is appropriate and how to apply it; and how the statistical treatment of these samples must be adapted. Extended data examples show the techniques at work. This is a book for practising researchers. It is a reference for the methods and formulae needed to deal with commonly encountered situations and, above all, a source of realistic and implementable solutions.

Path integrals provide a powerful method for describing quantum phenomena. This book introduces the quantum mechanics of particles that move in curved space by employing path integrals and then using them to compute anomalies in quantum field theories. The authors start by deriving path integrals for particles moving in curved space and their supersymmetric generalizations. They then discuss the regularization schemes essential to constructing and computing these path integrals. This topic is used to introduce regularization and renormalization in quantum field theories in a wider context. These methods are then applied to discuss and calculate anomalies in quantum field theory. Such anomalies provide enormous constraints in the search for physical theories of elementary particles, quantum gravity and string theories. An advanced text for researchers and graduate students of quantum field theory and string theory, the first part is also a stand-alone introduction to path integrals in q

Herodotus' Histories is the first major surviving prose work from antiquity. Its range of interests is immense, covering the whole of the known world and much beyond, and it culminates in a detailed account of the Persian Wars of the early fifth century BC. Moreover, research has shown that Herodotus is a sophisticated and at times even ironic narrator, and a pioneer and serious practitioner of historical research at a time when the Greeks' traditions about their past were still the fluid transmissions and memories of a largely oral society. This Companion provides a series of accessible chapters, written by distinguished scholars, illuminating many aspects of Herodotus' work: his skill in language and his narrative art; his intellectual preconceptions; his working methods and techniques; his attitude towards nature and the gods; his attitude towards foreign cultures and peoples; and his view of human life and human history.

Herodotus' Histories is the first major surviving prose work from antiquity. Its range of interests is immense, covering the whole of the known world and much beyond, and it culminates in a detailed account of the Persian Wars of the early fifth century BC. Moreover, research has shown that Herodotus is a sophisticated and at times even ironic narrator, and a pioneer and serious practitioner of historical research at a time when the Greeks' traditions about their past were still the fluid transmissions and memories of a largely oral society. This Companion provides a series of accessible chapters, written by distinguished scholars, illuminating many aspects of Herodotus' work: his skill in language and his narrative art; his intellectual preconceptions; his working methods and techniques; his attitude towards nature and the gods; his attitude towards foreign cultures and peoples; and his view of human life and human history.

This 2006 book presents a systematic introduction to the theory of parametric stability of structures under both deterministic and stochastic loadings. A comprehensive range of theories are presented and various application problems are formulated and solved, often using more than one approach. Investigation of an elastic system's dynamic stability frequently leads to the study of dynamic behaviour of the solutions of parametrically excited systems. Parametric instability or resonance is more dangerous than ordinary resonance as it is characterised by exponential growth of the response amplitudes even in the presence of damping. The emphasis in this book is on the applications and various analytical and numerical methods for solving engineering problems. The materials presented are as self-contained as possible, with all of the important steps of analysis provided in order to make the book suitable as a graduate-level textbook and especially for self-study.

Patrick Boyde brings Dante's thought and poetry into focus for the modern reader by restoring the Comedy to its intellectual and literary context in 1300. He begins by describing the authorities that Dante acknowledged in the field of ethics and the modes of thought he shared with the great thinkers of his time. After giving a clear account of the differing approaches and ideals embodied in Aristotelian philosophy, Christianity and courtly literature, Boyde concentrates on the poetic representation of the most important vices and virtues in the Comedy. He stresses the heterogeneity and originality of Dante's treatment, and the challenges posed by his desire to harmonize these divergent value-systems. The book ends with a detailed case study of the 'vices and worth' of Ulysses in which Boyde throws light on recent controversies by deliberately remaining within the framework of the thirteenth-century assumptions, methods and concepts explored in previous chapters.

Just as each person develops from infancy to adulthood, all interpersonal relationships have a life history that encompasses the changes in how people communicate with each other. This book is about how a relationship transforms itself from one pattern of communication to another. The authors present a unique research method called 'relational-historical research', based on advances in dynamic systems theory in developmental psychology, and qualitative methods in life history research. It rests on three premises: that the developing relationship (not the individual) is the unit of analysis; that change emerges from, but is not entirely constrained by, the patterns of the past; and that the developmental process is best revealed by making frequent observations within a particular case before, during, and after a key developmental transition. Looking specifically at the mother–infant relationship, this is a compelling piece of research that will appeal to an international audience of int

The last twenty years have seen a resurgence of interest in human evolution in many aspects. A distinction can be made between 'narrow' (general acceptance that human evolution occurred, historically) and 'broad' (evolutionary ideas that stretch much further into all aspects of humanity, past and present) human evolution. The broad perspective is beginning to make its presence felt, for example, through the developments in evolutionary genetics, evolutionary psychology and behavioural ecology. There must, therefore, be, among the variety of human adaptations, natures and behaviours, phenomena which are not susceptible to an evolutionary analysis, which are beyond the bounds of evolution. The problem is, though, that we do not really know where that boundary lies. Here, the limits of human evolution are explored, using two approaches - first, finding where humans 'fit' the expectations of evolutionary principles; and second, applying evolutionary methods to particular human contexts, wh

Charge-Coupled Devices (CCDs) are the state-of-the-art detector in many fields of observational science. Updated to include all of the latest developments in CCDs, this second edition of the Handbook of CCD Astronomy is a concise and accessible reference on all practical aspects of using CCDs. Starting with their electronic workings, it discusses their basic characteristics and then gives methods and examples of how to determine these values. While the book focuses on the use of CCDs in professional observational astronomy, advanced amateur astronomers, and researchers in physics, chemistry, medical imaging, and remote sensing will also find it very valuable. Tables of useful and hard-to-find data, key practical equations, and new exercises round off the book and ensure that it provides an ideal introduction to the practical use of CCDs for graduate students, and a handy reference for more experienced users.

The advent of fiber optic transmission systems and wavelength division multiplexing (WDM) have led to a dramatic increase in the usable bandwidth of single fiber systems. This book provides detailed coverage of survivability (dealing with the risk of losing large volumes of traffic data due to a failure of a node or a single fiber span) and traffic grooming (managing the increased complexity of smaller user requests over high capacity data pipes), both of which are key issues in modern optical networks. A framework is developed to deal with these problems in wide-area networks, where the topology used to service various high-bandwidth (but still small in relation to the capacity of the fiber) systems evolves toward making use of a general mesh. Effective solutions, exploiting complex optimization techniques, and heuristic methods are presented to keep network problems tractable. Newer networking technologies and efficient design methodologies are also described.

What came before 'postmodernism' in historical studies? By thinking through the assumptions, methods and cast of mind of English historians writing between about 1870 and 1970, this book reveals the intellectual world of the modernists and offers a full analysis of English historiography in this crucial period. Modernist historiography set itself the objective of going beyond the colourful narratives of 'whigs' and 'popularizers' in order to establish history as the queen of the humanities and as a rival to the sciences as a vehicle of knowledge. Professor Bentley does not follow those who deride modernism as 'positivist' or 'empiricist' but instead shows how it set in train brilliant new styles of investigation that transformed how historians understood the English past. But he shows how these strengths were eventually outweighed by inherent confusions and misapprehensions that threatened to kill the very subject that the modernists had intended to sustain.

What came before 'postmodernism' in historical studies? By thinking through the assumptions, methods and cast of mind of English historians writing between about 1870 and 1970, this book reveals the intellectual world of the modernists and offers a full analysis of English historiography in this crucial period. Modernist historiography set itself the objective of going beyond the colourful narratives of 'whigs' and 'popularizers' in order to establish history as the queen of the humanities and as a rival to the sciences as a vehicle of knowledge. Professor Bentley does not follow those who deride modernism as 'positivist' or 'empiricist' but instead shows how it set in train brilliant new styles of investigation that transformed how historians understood the English past. But he shows how these strengths were eventually outweighed by inherent confusions and misapprehensions that threatened to kill the very subject that the modernists had intended to sustain.

This handbook covers Handel's best known public music, the Water Music, written at the outset of his English career, and the Music for the Royal Fireworks, the last and largest of his orchestral creations. The genesis of these two orchestral suites is examined in its political as well as musical context; practical questions of performance style and interpretation are balanced by an enquiry into Handel's compositional processes, and the relationship of his other large-scale orchestral compositions, especially the Concerti a due cori, to these suites. Original source material is set alongside the most recent theories on Handel's character and working methods. In particular the problem of 'borrowings' is addressed with reference to most recent identifications of Handel's sources, together with the later presentation of these works in the nineteenth and twentieth centuries, with an account of recordings, editions and a summary of performance questions.

The Yoga Sutra of Patanjali is a classic Sanskrit treatise consisting of 195 “threads,” or aphorisms, describing the process of liberation through yoga. Although little is known about Patanjali (most scholars estimate that he lived in India circa 200–300 b.c.), his writings have long been recognized as a vital contribution to the philosophy and practice of yoga. This new, expert translation of the original Sanskrit text of Patanjali’s best-known work presents his seminal ideas and methods in accessible, plain-language English. Patanjali organized the sutra into four parts: Samadhi (absorption), Sadhana (practice), Vibhuti (supernatural powers), and Kaivalya (liberation). Each represents a step in breaking free of our limited definition of consciousness and training the mind to achieve oneness with the universe. Geshe Michael Roach, one of the most respected teachers of Tibetan Buddhism in America and a renowned scholar of Sanskrit, provides authoritative commentary on each of the sutra

The Business of Empire assesses the domestic impact of British imperial expansion by analysing what happened in Britain following the East India Company's acquisition of a vast territorial empire in South Asia. Drawing on a mass of hitherto unused material contained in the company's administrative and financial records, the book offers a reconstruction of the inner workings of the company as it made the remarkable transition from business to empire during the late-eighteenth century. H. V. Bowen profiles the company's stockholders and directors and examines how those in London adapted their methods, working practices, and policies to changing circumstances in India. He also explores the company's multifarious interactions with the domestic economy and society, and sheds important new light on its substantial contributions to the development of Britain's imperial state, public finances, military strength, trade and industry. This book will appeal to all those interested in imperial, e

In The Grammar of Society, first published in 2006, Cristina Bicchieri examines social norms, such as fairness, cooperation, and reciprocity, in an effort to understand their nature and dynamics, the expectations that they generate, and how they evolve and change. Drawing on several intellectual traditions and methods, including those of social psychology, experimental economics and evolutionary game theory, Bicchieri provides an integrated account of how social norms emerge, why and when we follow them, and the situations where we are most likely to focus on relevant norms. Examining the existence and survival of inefficient norms, she demonstrates how norms evolve in ways that depend upon the psychological dispositions of the individual and how such dispositions may impair social efficiency. By contrast, she also shows how certain psychological propensities may naturally lead individuals to evolve fairness norms that closely resemble those we follow in most modern societies.

In The Grammar of Society, first published in 2006, Cristina Bicchieri examines social norms, such as fairness, cooperation, and reciprocity, in an effort to understand their nature and dynamics, the expectations that they generate, and how they evolve and change. Drawing on several intellectual traditions and methods, including those of social psychology, experimental economics and evolutionary game theory, Bicchieri provides an integrated account of how social norms emerge, why and when we follow them, and the situations where we are most likely to focus on relevant norms. Examining the existence and survival of inefficient norms, she demonstrates how norms evolve in ways that depend upon the psychological dispositions of the individual and how such dispositions may impair social efficiency. By contrast, she also shows how certain psychological propensities may naturally lead individuals to evolve fairness norms that closely resemble those we follow in most modern societies.

In this 1999 book, Karl Gunnar Persson surveys a broad sweep of economic history, examining one of the most crucial markets - grain. His analysis allows him to draw more general lessons, for example that liberalization of markets was linked to political authoritarianism. Grain Markets in Europe traces the markets' early regulation, their poor performance and the frequent market failures. Price volatility caused by harvest shocks was of major concern for central and local government because of the unrest it caused. Regulation became obsolete when markets became more integrated and performed better through trade triggered by falling transport costs. Persson, a specialist in economic history, uses insights from development economics, explores contemporary economic thought on the advantages of free trade, and measures the extent of market integration using the latest econometric methods. Grain Markets in Europe will be of value to scholars and students in economic history, social history a

This book presents a study of co-offering relations among youths under twenty-one suspected of criminal offences in Stockholm during 1991–5. In total, the study includes just over 22,000 individuals suspected of around 29,000 offences. Jerzy Sarnecki employs the methods of network analysis which makes it possible to study the ties, social bonds, interactions, differential associations and connections that are central to many of the sociologically oriented theories on the aetiology of crime. Up to now, network analysis has been used only rarely in the criminological context. The book discusses many aspects of Stockholm's delinquent networks such as the existence of delinquent gangs and a criminal underworld, the durability of delinquent relations, and the choice of co-offenders with respect to sex, age, residential location, ethnic background and earlier delinquent experience. It also considers the effects of societal intervention on criminal networks. This unique study will appeal to a

This 2002 book discusses the classical foundations of field theory, using the language of variational methods and covariance. It explores the limits of what can be achieved with purely classical notions, and shows how these have a deep and important connection with the second quantized field theory, which follows on from the Schwinger Action Principle. The book takes a pragmatic view of field theory, focusing on issues which are usually omitted from quantum field theory texts and cataloging results which are often hard to find in the literature. Care is taken to explain how results arise and how to interpret them physically, for graduate students starting out in the field. Many physical examples are provided, making the book an ideal supplementary text for courses on elementary field theory, group theory and dynamical systems. It will also be a valuable reference for researchers already working in these and related areas.

The Remote Sensing Data Book provides a unique resource of all aspects of remote sensing for the expert and non-expert alike. Organised as a dictionary, it contains over 700 alphabetically-arranged and cross-referenced entries on how remote sensing works, what kinds of data are available, and the large number of satellites and instruments from which the information is obtained. As well as short technical definitions, it also includes longer essays and reviews to give an overview of the subject. Although not a textbook in itself, the data book will serve as a valuable addition to existing textbooks for undergraduates and graduate students on geography, environmental and earth science courses that include an element of remote sensing. It will also be an essential reference for researchers and research managers at all levels using spaceborne remote sensing methods to obtain information about the earth's land, sea, ice and atmosphere.

An important problem in computational biology is identifying short DNA sequences (mathematically, 'words') associated to a biological function. One approach consists in determining whether a particular word is simply random or is of statistical significance, for example, because of its frequency or location. This book introduces the mathematical and statistical ideas used in solving this so-called exceptional word problem. It begins with a detailed description of the principal models used in sequence analysis: Markovian models are central here and capture compositional information on the sequence being analysed. There follows an introduction to several statistical methods that are used for finding exceptional words with respect to the model used. The second half of the book is illustrated with numerous examples provided from the analysis of bacterial genomes, making this a practical guide for users facing a real situation and needing to make an adequate procedure choice.

Studies of dental and skeletal growth and development have often been treated as independent disciplines within the literature. Human Growth in the Past, first published in 1999, brings together these two related fields of enquiry in a single volume whose purpose is to place methodological issues of growth and development in past populations within a strong theoretical framework. Contributions examine a variety of aspects of human growth in the past, drawing from both palaeoanthropological and bioarchaeological data. The book covers a wide spectrum of topics, from patterns of growth in humans and their close relatives, innovative methods and applications of techniques and models for the study of growth, to estimation of age-at-death in subadults and infant mortality in archaeological samples. Human Growth in the Past will be of interest to biological anthropologists, and those in the related fields of dental anatomy, evolutionary biology and developmental biology.

The prediction of turbulent flows is of paramount importance in the development of complex engineering systems involving flow, heat and mass transfer, and chemical reactions. Arising from a programme held at the Isaac Newton Institute in Cambridge, this volume reviews the current situation regarding the prediction of such flows through the use of modern computational fluid dynamics techniques, and attempts to address the inherent problem of modelling turbulence. In particular, the current physical understanding of such flows is summarised and the resulting implications for simulation discussed. The volume continues by surveying current approximation methods whilst discussing their applicability to industrial problems. This major work concludes by providing a specific set of guidelines for selecting the most appropriate model for a given problem. Unique in its breadth and critical approach, this book will be of immense value to experienced practitioners and researchers, continuing the U

Soil has generally been regarded as something of a 'black box' by ecologists. The importance of soil is obvious: it provides physical support for plants, and both the living and non-living components contribute to a variety of important environmental functions. Soil is a species-rich habitat, but many questions about the ecological significance of the soil's biological diversity, and in particular how it affects ecosystem function, have never been asked. The linkages between above-ground ecology, which is rich in ecological theory, and below-ground ecology, where investigation has been restricted by methodological difficulties, have not been made. Technical developments, including isotopic and molecular methods as well as experimental and modelling approaches, have led to a renaissance in soil biodiversity research. The key areas are reflected in this exciting volume which brings together many leading contributors to explore the role and importance of soil biota.

This text provides a thorough treatment of the fundamental principles of fluid mechanics and convection heat transfer and shows how to apply the principles to a wide variety of fluid flow problems. The book is intended for use by final year undergraduate and beginning graduate students in engineering. The focus is on incompressible viscous flows with special applications to non-Newtonian fluid flows, turbulent flows, and free-forced convection flows. A special feature of the text is its coverage of generalised mass, momentum, and heat transfer equations, cartesian tensor manipulations, scale analyses, mathematical modelling techniques and practical solution methods. The final chapter is unique in its case-study approach, applying general modelling principles to analyse non-isothermal flow systems found in a wide range of engineering disciplines. Numerous end-of-chapter sample problem solutions, homework assignments, and mathematical aids are provided to enhance the reader's understandi

This book provides an introduction to nonequilibrium statistical physics via lattice models. Beginning with an introduction to the basic driven lattice gas, the early chapters discuss the relevance of this lattice model to certain natural phenomena and examine simulation results in detail. Several possible theoretical approaches to the driven lattice gas are presented. In the next two chapters, absorbing-state transitions are discussed in detail. The later chapters examine a variety of systems subject to dynamic disorder before returning to look at the more surprising effects of multiparticle rules, nonunique absorbing-states and conservation laws. Examples are given throughout the book, the emphasis being on using simple representations of nature to describe ordering in real systems. The use of methods such as mean-field theory, Monte Carlo simulation, and the concept of universality to study and interpret these models is described. Detailed references are included.

Cylindrical arrays lie at the heart of the antenna systems of most major radio communication systems, including broadcasting networks, cellular 'phone systems and radar. In this book, the authors present practical theoretical methods for determining current distributions, input admittances and field patterns of a wide variety of cylindrical antennas, including the isolated antenna, the two-element array, the circular array, curtain arrays, Yagi and log-periodic arrays, planar arrays and three-dimensional arrays. Coverage includes analysis of horizontal antennas over, on and in the earth and sea, large resonant arrays of electrically short dipoles and a chapter on the theory and techniques of experimental measurement. Written by three of the leading engineers in the field, and based on world-class research carried out at Harvard over the last forty years, Cylindrical Antennas and Arrays is destined to become established as the basic reference for practising engineers and advanced studen