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Showing 6,876 through 6,900 of 31,271 results

Discovering Nature on the Mountainside

by Lenka Chytilová Hedviga Gutierrez

This beautifully illustrated and educational children&’s book explores mountain wildlife and how different animals live through the seasons. Strap on your boots and set out to explore a gorgeous mountainside! Discover all the amazing animals that call the mountains home. See how they live throughout the seasons—from bears and bats to eagles, mountain goats, marmots, and so much more. From which animals turn white when it snows to which are the best ice and rock climbers, young readers will learn all kinds of fun facts in this delightful picture book. This is a fixed-format ebook, which preserves the design and layout of the original print book

Discovering Political Ecology

by Alex Loftus Gustav Cederlöf

Political ecology is one of the most vibrant fields of environmental research. This book introduces political ecology to a new generation of students in a daring new way: as an interdisciplinary approach to environmental research but also as a series of lived realities and a praxis for change. The origins of political ecology are often traced through an Anglo-American canon. In Discovering Political Ecology, Gustav Cederlöf and Alex Loftus instead take up the challenge of presenting the key conversations and the diverse traditions that have shaped this field with attention to its extensive international roots. Inspired by voices and research in Asia, Africa, Europe and the Americas, the authors address the concerns of those who from different social backgrounds have grown up in a world shaped by climate change and increasing environmental inequalities.Engaging and accessible in style, Discovering Political Ecology introduces a set of key concepts around which conversations in political ecology coalesce. It also shows how these concepts allow you to make sense of some of the most pressing issues of our time—issues around water, energy, agriculture, forestry, climate change and environmental justice. Each chapter includes learning outcomes and suggested further readings, extensive bibliographies and seminar activities to be used by students and educators. At the cutting edge of the field, the book will be of interest to those in all disciplines brought together in political ecology, including but not limited to anthropology, development studies, ecology, geography, history and political science.

Discovering the Deep

by Michael R. Perfit Jeffrey A. Karson Deborah S. Kelley Daniel J. Fornari Michael R. Perfit Timothy M. Shank Jeffrey A. Karson Deborah S. Kelley Daniel J. Fornari

The deep oceans and global seafloor are truly Earth's last frontier. They remain largely unexplored, yet are critical to our survival on this planet. This magnificent, full-color volume transports you to bizarre landscapes hosting exotic life forms that rival the most imaginative science fiction. Starting with a historical summary of seafloor exploration and the developing technologies used to study this extreme environment, it then describes the distinctive geologic components of the Earth's ocean floor and the unusual biological communities found along the mid-ocean ridges. This is an indispensable reference for researchers, teachers, and students of marine science, and a visually stunning resource that will enlighten and intrigue oceanographers and enthusiasts alike. A suite of online resources, including photographs and video clips, combine with the book to provide fascinating insights into the hidden world of seafloor geology and biology using the latest deep-sea imaging and geological concepts.

Discovering the Secret World of Nature Underground

by Petra Bartíková Marcel Králik

Young readers discover the fascinating world of animals and insects that live underground in this beautifully illustrated children&’s book. Have you ever wondered what it would be like to be an animal that lives underground? Now you can find out! With each turn of the page, this engaging picture book reveals dozens of adorable illustrations, educational captions, vocabulary words, and more—all exploring the underground habitat of several kinds of animals. From rabbits and mice to badgers, ants, and other insects, children will love learning all about these busy animals that burrow below! This is a fixed-format ebook, which preserves the design and layout of the original print book

Discovering the Unique Geology of the Bergell Alps (GeoGuide)

by Hans-Rudolf Wenk Elizabeth Wenk

This book aims to introduce scientists and educated laymen to the fascinating geology of the Bergell Alps, first with some background information on geology, tectonics, minerals and rocks and then to lead readers on excursions to observe geological features in the field. We believe the best way to make readers familiar with local geology is to lead them to intriguing outcrops. Such books are common in North America, but missing in Europe, particularly for the Alps. With this work, we use hands-on experience at a series of sites to educate readers how individual outcrops, moraines, landslides or other features contribute to our broader understanding of the region’s unique geology.

Discovering the World of Nature Along the Riverbank

by Petra Bartíková Marcel Králik

With delightful illustrations and fascinating facts aimed at young readers, this children&’s book explores the natural world of riverbanks. Have you ever wondered how and why beavers build their dams, how otters live, or how frogs come to be? Now you can find out! This charming picture book teaches young children what it&’s like to be an animal living on and in the water. With each turn of the page, this volume reveals dozens of adorable illustrations, educational captions, and vocabulary words. From beavers and otters to snakes, frogs, newts, and more, children will love learning all about these busy aquatic animals and the amazing lives they live! This is a fixed-format ebook, which preserves the design and layout of the original print book

Discovery of Co-existing Non-collinear Spin Textures in D2d Heusler Compounds (Springer Theses)

by Jagannath Jena

Non-collinear spin textures have attracted significant attention due to their topological nature, emergent electromagnetic properties, and potential spintronic and magnonic device applications. This book explores the physical properties of distinct spin textures in D2d compounds. The main goals of the work are (a) discovering new spin textures in D2d Heusler compounds and studying their detailed properties to enrich the field of non-collinear magnetism (b) optimizing the nano-track geometry and generating isolated and single chains of nano-objects that will establish new hallmarks for technological applications (c) studying the stability of spin textures with magnetic fields and temperatures and finding a way to observe the striking behavior of spin textures near the specimen edges. The first few chapters provide a brief overview of spin textures such as Bloch and Néel skyrmions. In the experimental methods section, the author shows how to identify the single-crystalline grains of a polycrystalline sample, how to make single-crystalline thin specimens and nano-tracks, and then provides explicit descriptions of different imaging techniques performed on a transmission electron microscope. This part will be valuable for beginners wishing to conduct research in experimental nano-magnetism and transmission electron microscope imaging. The core results of the book are presented in four chapters, describing the discovery of several new and unanticipated spin textures, namely square-shaped antiskyrmions, elliptical Bloch skyrmions, fractional antiskyrmions, fractional Bloch skyrmions and elongated (anti)skyrmions in a single D2d Heusler compound. It is shown that these textures can be understood by a combination of dipole-dipole interactions and a chiral vector exchange that makes it possible to stabilize various spin textures even in the same compound. The D2d compounds are the first non-centrosymmetric systems shown to host several co-existing non-collinear spin textures.

Discrete Calculus

by Leo J. Grady Jonathan R. Polimeni

The field of discrete calculus, also known as "discrete exterior calculus", focuses on finding a proper set of definitions and differential operators that make it possible to operate the machinery of multivariate calculus on a finite, discrete space. In contrast to traditional goals of finding an accurate discretization of conventional multivariate calculus, discrete calculus establishes a separate, equivalent calculus that operates purely in the discrete space without any reference to an underlying continuous process. This unique text brings together into a single framework current research in the three areas of discrete calculus, complex networks, and algorithmic content extraction. Although there have been a few intersections in the literature between these disciplines, they have developed largely independently of one another, yet researchers working in any one of these three areas can strongly benefit from the tools and techniques being used in the others. Many example applications from several fields of computational science are provided to demonstrate the usefulness of this framework to a broad range of problems. Readers are assumed to be familiar with the basics of vector calculus, graph theory, and linear algebra. Topics and features: presents a thorough review of discrete calculus, with a focus on key concepts required for successful application; unifies many standard image processing algorithms into a common framework for viewing a wide variety of standard algorithms in filtering, clustering, and manifold learning that may be applied to processing data associated with a graph or network; explains how discrete calculus provides a natural definition of "low-frequency" on a graph, which then yields filtering and denoising algorithms; discusses how filtering algorithms can give rise to clustering algorithms, which can be used to develop manifold learning and data discovery methods; examines ranking algorithms, as well as algorithms for analyzing the structure of a network. Graduate students and researchers interested in discrete calculus, complex networks, image processing and computer graphics will find this text/reference a clear introduction to the foundations of discrete calculus as well as a useful guide to have readily available for their work. Dr. Leo J. Grady is a Senior Research Scientist with Siemens Corporate Research in Princeton, New Jersey, USA. Dr. Jonathan R. Polimeni is a Research Fellow at the Massachusetts General Hospital in Boston, Massachusetts, USA, and Instructor in Radiology at Harvard Medical School, Boston, Massachusetts, USA.

Discrete Element Method for Multiphase Flows with Biogenic Particles: Agriculture Applications

by Ling Zhou Ramesh K. Agarwal Weidong Shi Mahmoud A. Elemam

This book presents the advanced theory and application of the combined Computational Fluid Dynamics – Discrete Element Method (CFD-DEM) to multiphase flow simulations of the gas and bio-particulate matter of non-uniformly shaped biomass. It explores how DEM can simulate the complex behaviour of biomass particles, such as their packing in the multiphase flows that occurs in the agricultural product processing industries. It offers an overview of aerodynamic systems, such as cyclone separators, used in the agricultural processing industry. A detailed description of DEM modeling, including the particle-particle, particle-boundary, and particle-fluid interactions in the context of biomass particles of varying sizes and shapes, is provided. Coverage includes the critical application of CFD-DEM simulation technology in designing and optimizing grain handling and processing equipment and the application of extended DEM to other granular flows of complex particles like sand, powders, and dust from mines where clumping and agglomeration occur. The application of DEM in modeling and simulation of complex multiphase systems can help improve productivity, reduce costs, and increase efficiency in the agricultural industry.

Discrete Energy on Rectifiable Sets (Springer Monographs in Mathematics)

by Edward B. Saff Sergiy V. Borodachov Douglas P. Hardin

This book aims to provide an introduction to the broad and dynamic subject of discrete energy problems and point configurations. Written by leading authorities on the topic, this treatise is designed with the graduate student and further explorers in mind. The presentation includes a chapter of preliminaries and an extensive Appendix that augments a course in Real Analysis and makes the text self-contained. Along with numerous attractive full-color images, the exposition conveys the beauty of the subject and its connection to several branches of mathematics, computational methods, and physical/biological applications. This work is destined to be a valuable research resource for such topics as packing and covering problems, generalizations of the famous Thomson Problem, and classical potential theory in Rd. It features three chapters dealing with point distributions on the sphere, including an extensive treatment of Delsarte–Yudin–Levenshtein linear programming methods for lower bounding energy, a thorough treatment of Cohn–Kumar universality, and a comparison of 'popular methods' for uniformly distributing points on the two-dimensional sphere. Some unique features of the work are its treatment of Gauss-type kernels for periodic energy problems, its asymptotic analysis of minimizing point configurations for non-integrable Riesz potentials (the so-called Poppy-seed bagel theorems), its applications to the generation of non-structured grids of prescribed densities, and its closing chapter on optimal discrete measures for Chebyshev (polarization) problems.

Discrete Fracture Network Modeling of Hydraulic Stimulation

by Roland N. Horne Mark W. Mcclure

Discrete Fracture Network Modeling of Hydraulic Stimulation describes the development and testing of a model that couples fluid-flow, deformation, friction weakening, and permeability evolution in large, complex two-dimensional discrete fracture networks. The model can be used to explore the behavior of hydraulic stimulation in settings where matrix permeability is low and preexisting fractures play an important role, such as Enhanced Geothermal Systems and gas shale. Used also to describe pure shear stimulation, mixed-mechanism stimulation, or pure opening-mode stimulation. A variety of novel techniques to ensure efficiency and realistic model behavior are implemented, and tested. The simulation methodology can also be used as an efficient method for directly solving quasistatic fracture contact problems. Results show how stresses induced by fracture deformation during stimulation directly impact the mechanism of propagation and the resulting fracture network.

Discrete Mathematics: Proofs, Structures and Applications, Third Edition

by John Taylor Rowan Garnier

Taking an approach to the subject that is suitable for a broad readership, Discrete Mathematics: Proofs, Structures, and Applications, Third Edition provides a rigorous yet accessible exposition of discrete mathematics, including the core mathematical foundation of computer science. The approach is comprehensive yet maintains an easy-to-follow prog

Discrete Simulation and Animation for Mining Engineers

by John Sturgul

General Purpose Simulation System (GPSS) is a special computer programming language primarily used to simulate what can be classified as discrete systems. A discrete system is one where, at any given instant in time, a countable number of things can take place. The basic operation of a mine itself can be considered such a system. Discrete Simulatio

Discrete Systems And Integrability

by J. Hietarinta N. Joshi F. W. Nijhoff

This first introductory text to discrete integrable systems introduces key notions of integrability from the vantage point of discrete systems, also making connections with the continuous theory where relevant. While treating the material at an elementary level, the book also highlights many recent developments. Topics include: Darboux and Bäcklund transformations; difference equations and special functions; multidimensional consistency of integrable lattice equations; associated linear problems (Lax pairs); connections with Padé approximants and convergence algorithms; singularities and geometry; Hirota's bilinear formalism for lattices; intriguing properties of discrete Painlevé equations; and the novel theory of Lagrangian multiforms. The book builds the material in an organic way, emphasizing interconnections between the various approaches, while the exposition is mostly done through explicit computations on key examples. Written by respected experts in the field, the numerous exercises and the thorough list of references will benefit upper-level undergraduate, and beginning graduate students as well as researchers from other disciplines.

Diseases of Commercial Crops and Their Integrated Management

by Amar Bahadur Pranab Dutta

This volume compiles information on different aspects of diseases of commercial crops and their management. It contains 17 chapters based on different crops contributed by various authors. The book will be helpful for the students pursuing their degree in Agricultural Sciences, growers, teachers, extension personnel, and fellow researchers in their respective fields.

Diseases of Field Crops and their Management

by S. Parthasarathy G. Thiribhuvanamala K. Prabakar

The book entitled Diseases of Field Crops and their Management provides most recent information about major diseases of cultivation field crops, their symptoms, pathogen characters, epidemiology, and management. In order to make the book all in one, the importance of major diseases has also been dealt with in brief. Note: T&F does not sell or distribute the Hardback in India, Pakistan, Nepal, Bhutan, Bangladesh and Sri Lanka.

Diseases of Oil Crops and Their Integrated Management

by Amar Bahadur Pranab Dutta

This volume compiles information on different aspects of diseases of oil crops and their management. It contains 11 chapters based on different crops contributed by various authors. The book will be helpful for the students pursuing their degree in Agricultural Sciences, growers, teachers, extension personnel, and fellow researchers in their respective fields.

Disentangling Migration and Climate Change: Methodologies, Political Discourses and Human Rights

by Thomas Faist Jeanette Schade

This book addresses environmental and climate change induced migration from the vantage point of migration studies, offering a broad spectrum of approaches for considering the environment/climate/migration nexus. Research on the subject is still frequently narrowed down to climate change vulnerability and the environmental push factor. The book establishes the interconnections between societal and environmental vulnerability, and migration and capability, allowing appreciation of migration in the frame of climate as a case of spatial and social mobility, that is, as a strategy of persons and groups to deal with a grossly unequal distribution of life chances across the world. In their introduction, the editors fan out the current debate and state the need to transcend predominantly policy-oriented approaches to migration. The first section of the volume focuses on "Methodologies and Methods" and presents very distinct approaches to think climate induced migration. Subsequent chapters explore the sensitivity of existing migration flows to climate change in Ghana and Bangladesh, the complex relationship between migration, demographic change and coping capacities in Canada, methodological challenges of a household survey on the significance of migration and remittances for adaptation in the Hindu Kush region and an econometric study of the aftermath of the 1998 floods in Bangladesh. The second part, "Areas of Concern: Politics and Human Rights", deepens the analysis of discourses as well as of the implications of proposed and implemented policies. Contributors discuss such topics as environmental migration as a multi-causal problem, climate migration as a consequence in an alarmist discourse and climate migration as a solution. A study of an integrated relocation program in Papua New Guinea is followed by chapters on the promise and the flaws of planned relocation policy, global policy on protection of environmental migrants including both internally displaced peoples and those who cross international borders. A concluding chapter places human agency at centre stage and explores the interplay between human rights, capability and migration.

Disinfection By-Products in Water (The Handbook of Environmental Chemistry #135)

by Chao Chen Yuefeng Xie Susan Andrews

This book offers a comprehensive review of disinfection by-products (DBPs), exploring various aspects from detection methods and precursors to their potential health risks, regulation, and future implications. This book is also a memorial to the 50th anniversary of the first major DBP report in 1974 by Dr. Rook, who identified chloroform in chlorinated drinking water, initiating the study of DBPs. For half a century, chemists, toxicologists, engineers and regulators have been identifying more DBPs, understanding their formation mechanism, evaluating their health effects on the public, and minimizing and controlling their formation in drinking water. Divided into four parts, the book commences with an introduction to the general knowledge of DBPs, shedding light on the significance of DBPs and their impact on water quality. It also delves into the detection methods employed to identify and quantify DBPs, offering readers invaluable insights into cutting-edge techniques and emerging technologies, and explores the sources and characteristics of DBP precursors. In Part II, several expert contributors provide an overview of individual DBPs, including halogenated aliphatic, iodinated, aromatic, and heterocyclic DBPs, discussing their properties and potential implications. The discussion extends to nitrogenous DBPs, the group of nitrosamines, and inorganic DBPs as well. Part III provides an authoritative perspective on the relationship between energy consumption, climate change, and DBP formation, offering also insights into DBPs in the context of water treatment plants, water reuse plants, swimming pools, and everyday life. The book closes with a section devoted to the health effects of DBPs, where particular attention is given to the analysis of the toxicity and health risks associated with DBPs. In this section, readers will find more about the potential adverse effects of DBPs on human health and current research on risk assessment and management strategies. In today's era of water scarcity and increasing demands for safe drinking water, the presence of DBPs has emerged as a critical concern in the field of public health. This book is, therefore, an invaluable resource for researchers, water treatment professionals, public health officials, and policymakers seeking a comprehensive understanding of DBPs.

Dislocating the Orient: British Maps and the Making of the Middle East, 1854-1921

by Daniel Foliard

While the twentieth century’s conflicting visions and exploitation of the Middle East are well documented, the origins of the concept of the Middle East itself have been largely ignored. With Dislocating the Orient, Daniel Foliard tells the story of how the land was brought into being, exploring how maps, knowledge, and blind ignorance all participated in the construction of this imagined region. Foliard vividly illustrates how the British first defined the Middle East as a geopolitical and cartographic region in the nineteenth and early twentieth centuries through their imperial maps. Until then, the region had never been clearly distinguished from “the East” or “the Orient.” In the course of their colonial activities, however, the British began to conceive of the Middle East as a separate and distinct part of the world, with consequences that continue to be felt today. As they reimagined boundaries, the British produced, disputed, and finally dramatically transformed the geography of the area—both culturally and physically—over the course of their colonial era. Using a wide variety of primary texts and historical maps to show how the idea of the Middle East came into being, Dislocating the Orient will interest historians of the Middle East, the British empire, cultural geography, and cartography.

Dispatches from the Sweet Life: One Family, Five Acres, and a Community's Quest to Reinvent the World

by William Powers

Many fantasize about dramatically changing their lives — living in accordance with their ideals rather than the exigencies of job, bills, and possessions. William Powers actually does it. In his book Twelve by Twelve, Powers lived in an off-grid tiny house in rural North Carolina. In New Slow City, he and his wife, Melissa, inhabited a Manhattan micro-apartment in search of slow in the fastest city in the world. Here, the couple, with baby in tow, search for balance, community, and happiness in a small town in Bolivia. They build an adobe house, plant a prolific orchard and organic garden, and weave their life into a community of permaculturists, bio-builders, artists, and creative businesspeople. Can this Transition Town succeed in the face of encroaching North American capitalism, and can Powers and the other settlers find the balance they’re seeking? Dispatches from the Sweet Life is compelling, sobering, thought-provoking, and, no matter the outcome, inspiring.

Dispersals: On Plants, Borders, and Belonging

by Jessica J. Lee

A prize-winning memoirist and nature writer turns to the lives of plants entangled in our human world to explore belonging, displacement, identity, and the truths of our shared futureA seed slips beyond a garden wall. A tree is planted on a precarious border. A shrub is stolen from its culture and its land. What happens when these plants leave their original homes and put down roots elsewhere?In fourteen essays, Dispersals explores the entanglements of the plant and human worlds: from species considered invasive, like giant hogweed; to those vilified but intimate, like soy; and those like kelp, on which our futures depend. Each of the plants considered in this collection are somehow perceived as being &‘out of place&’—weeds, samples collected through imperial science, crops introduced and transformed by our hand. Combining memoir, history, and scientific research in poetic prose, Jessica J. Lee meditates on the question of how both plants and people come to belong, why both cross borders, and how our futures are more entwined than we might imagine.

Dispersion Decay and Scattering Theory

by Alexander Komech Elena Kopylova

A simplified, yet rigorous treatment of scattering theory methods and their applicationsDispersion Decay and Scattering Theory provides thorough, easy-to-understand guidance on the application of scattering theory methods to modern problems in mathematics, quantum physics, and mathematical physics. Introducing spectral methods with applications to dispersion time-decay and scattering theory, this book presents, for the first time, the Agmon-Jensen-Kato spectral theory for the Schr?dinger equation, extending the theory to the Klein-Gordon equation. The dispersion decay plays a crucial role in the modern application to asymptotic stability of solitons of nonlinear Schr?dinger and Klein-Gordon equations.The authors clearly explain the fundamental concepts and formulas of the Schr?dinger operators, discuss the basic properties of the Schr?dinger equation, and offer in-depth coverage of Agmon-Jensen-Kato theory of the dispersion decay in the weighted Sobolev norms. The book also details the application of dispersion decay to scattering and spectral theories, the scattering cross section, and the weighted energy decay for 3D Klein-Gordon and wave equations. Complete streamlined proofs for key areas of the Agmon-Jensen-Kato approach, such as the high-energy decay of the resolvent and the limiting absorption principle are also included.Dispersion Decay and Scattering Theory is a suitable book for courses on scattering theory, partial differential equations, and functional analysis at the graduate level. The book also serves as an excellent resource for researchers, professionals, and academics in the fields of mathematics, mathematical physics, and quantum physics who would like to better understand scattering theory and partial differential equations and gain problem-solving skills in diverse areas, from high-energy physics to wave propagation and hydrodynamics.

Dispersion Forces II

by Stefan Buhmann

In this book, a modern unified theory of dispersion forces on atoms and bodies is presented which covers a broad range of different aspects and scenarios. Macroscopic quantum electrodynamics is applied within the context of dispersion forces. In contrast to the normal-mode quantum electrodynamics traditionally used to study dispersion forces, the new approach allows to consider realistic material properties including absorption and is flexible enough to be applied to a broad range of geometries. Thus general properties of dispersion forces like their non-additivity and the relation between microscopic and macroscopic dispersion forces are discussed. It is demonstrated how the general results can be used to obtain dispersion forces on atoms in the presence of bodies of various shapes and materials. In particular, nontrivial magnetic properties of the bodies, bodies of irregular shapes, the role of material absorption, and dynamical forces for excited atoms are discussed. This volume 2 deals especially with quantum electrodynamics, dispersion forces, Casimir forces, asymptotic power laws, quantum friction and universal scaling laws. The book gives both the specialist and those new to the field a thorough overview over recent results in the context of dispersion forces. It provides a toolbox for studying dispersion forces in various contexts.

Dispersive Shallow Water Waves: Theory, Modeling, and Numerical Methods (Lecture Notes in Geosystems Mathematics and Computing)

by Denys Dutykh Gayaz Khakimzyanov Zinaida Fedotova Oleg Gusev

This monograph presents cutting-edge research on dispersive wave modelling, and the numerical methods used to simulate the propagation and generation of long surface water waves. Including both an overview of existing dispersive models, as well as recent breakthroughs, the authors maintain an ideal balance between theory and applications. From modelling tsunami waves to smaller scale coastal processes, this book will be an indispensable resource for those looking to be brought up-to-date in this active area of scientific research.Beginning with an introduction to various dispersive long wave models on the flat space, the authors establish a foundation on which readers can confidently approach more advanced mathematical models and numerical techniques. The first two chapters of the book cover modelling and numerical simulation over globally flat spaces, including adaptive moving grid methods along with the operator splitting approach, which was historically proposed at the Institute of Computational Technologies at Novosibirsk. Later chapters build on this to explore high-end mathematical modelling of the fluid flow over deformed and rotating spheres using the operator splitting approach. The appendices that follow further elaborate by providing valuable insight into long wave models based on the potential flow assumption, and modified intermediate weakly nonlinear weakly dispersive equations.Dispersive Shallow Water Waves will be a valuable resource for researchers studying theoretical or applied oceanography, nonlinear waves as well as those more broadly interested in free surface flow dynamics.

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