электроника (страница 4)

Автор: Zhijun Zhang

Expanded and updated, this practical guide is a one-stop design reference containing all an engineer needs when designing antennas Integrates state-of-the-art technologies with a special section for step-by-step antenna design Features up-to-date bio-safety and electromagnetic compatibility regulation compliance and latest standards Newly updated with MIMO antenna design, measurements and requirements Accessible to readers of many levels, from introductory to specialist Written by a practicing expert who has hired and trained numerous engineers

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Автор: Dominique Paret

Near-field communication (NFC) enables the exchange of information between close devices. The antenna is the indispensable element to transform an electronic device into an NFC system. For both theory and practice, this book presents in detail the design technologies of different antennas. They must meet the NFC ISO 18 092 and 21 481 standards as well as specifications by the NFC Forum for industrial applications, by EMVCo for banking applications and payments, and by CEN for public transport. In a particularly pedagogic way, Antenna Designs for NFC Devices enables designers of communicating object systems and the Internet of Things (IoT) to have access to the mysteries of the design of NFC antennas.

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Автор: Constantine A. Balanis

Updated with color and gray scale illustrations, a companion website housing supplementary material, and new sections covering recent developments in antenna analysis and design This book introduces the fundamental principles of antenna theory and explains how to apply them to the analysis, design, and measurements of antennas. Due to the variety of methods of analysis and design, and the different antenna structures available, the applications covered in this book are made to some of the most basic and practical antenna configurations. Among these antenna configurations are linear dipoles; loops; arrays; broadband antennas; aperture antennas; horns; microstrip antennas; and reflector antennas. The text contains sufficient mathematical detail to enable undergraduate and beginning graduate students in electrical engineering and physics to follow the flow of analysis and design. Readers should have a basic knowledge of undergraduate electromagnetic theory, including Maxwell’s equations and the wave equation, introductory physics, and differential and integral calculus. Presents new sections on flexible and conformal bowtie, Vivaldi antenna, antenna miniaturization, antennas for mobile communications, dielectric resonator antennas, and scale modeling Provides color and gray scale figures and illustrations to better depict antenna radiation characteristics Includes access to a companion website housing MATLAB programs, Java-based applets and animations, Power Point notes, Java-based interactive questionnaires and a solutions manual for instructors Introduces over 100 additional end-of-chapter problems Antenna Theory: Analysis and Design, Fourth Edition is designed to meet the needs of senior undergraduate and beginning graduate level students in electrical engineering and physics, as well as practicing engineers and antenna designers. Constantine A. Balanis received his BSEE degree from the Virginia Tech in 1964, his MEE degree from the University of Virginia in 1966, his PhD in Electrical Engineering from The Ohio State University in 1969, and an Honorary Doctorate from the Aristotle University of Thessaloniki in 2004. From 1964 to 1970, he was with the NASA Langley Research Center in Hampton, VA, and from 1970 to 1983, he was with the Department of Electrical Engineering of West Virginia University. In 1983 he joined Arizona State University and is now Regents' Professor of Electrical Engineering. Dr. Balanis is also a life fellow of the IEEE.

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Автор: Yi Huang

Antennas From Theory to Practice Comprehensive coverage of the fundamentals and latest developments in antennas and antenna design In the newly revised Second Edition of Antennas: From Theory to Practice, renowned researcher, engineer, and author Professor Yi Huang delivers comprehensive and timely coverage of issues in modern antenna design and theory. Practical and accessible, the book is written for engineers, researchers, and students who work with radio frequency/microwave engineering, radar, and radio communications. The book details the basics of transmission lines, radiowaves and propagation, antenna theory, antenna analysis and design using industrial standard design software tools and the theory of characteristic modes, antenna measurement equipment, facilities, and techniques. It also covers the latest developments in special topics, like small and mobile antennas, wide- and multi-band antennas, automotive antennas, RFID, UWB, metamaterials, reconfigurable and MIMO antennas, and more. The new edition includes up to date information on a wide variety of newly relevant topics and trends, like adaptive impedance matching, the theory of characteristic modes, antenna materials and fabrication processes, and over-the-air (OTA) antenna system measurements. Many questions and examples are provided which enhances the ­learning experience. The book covers: An introduction to circuit concepts and transmission lines, including lumped and distributed element systems, transmission line theory, and the Smith Chart An exploration of field concepts and radiowaves, including wave equations and solutions and radiowave propagation mechanisms, characteristics, and models Discussions of antenna basics and popular antennas, including wire-type antennas, aperture-type antennas, and antenna arrays Information about antenna manufacturing and measurements, including antenna measurement facilities and methods The use of industrial standard simulation tools for antenna design and analysis Perfect for engineers and researchers who work in RF engineering or radar and radio communications, Antennas: From Theory to Practice, Second Edition will also earn a place on the bookshelves of university students seeking a concise and practical introduction to the basics of antennas and antenna design.

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Автор: Yi Huang

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Автор: Xiaodong Chen

This book addresses the fundamentals and practical implementations of antennas for Global Navigation Satellite Systems (GNSS) In this book, the authors discuss the various aspects of GNSS antennas, including fundamentals of GNSS, design approaches for the GNSS terminal and satellite antennas, performance enhancement techniques and effects of user’s presence and surrounding environment on these antennas. In addition, the book will provide the reader with an insight into the most important aspects of the GNSS antenna technology and lay the foundations for future advancements. It also includes a number of real case studies describing the ways in which antenna design can be adapted to conform to the design constraints of practical user devices, and also the management of potential adverse interactions between the antenna and its platform. Key Features: Covers the fundamentals and practical implementations of antennas for Global Navigation Satellite Systems (GNSS) Describes technological advancements for GPS, Glonass, Galileo and Compass Aims to address future issues such as multipath interference, in building operation, RF interference in mobile Includes a number of real case studies to illustrate practical implementation of GNSS This book will be an invaluable guide for antenna designers, system engineers, researchers for GNSS systems and postgraduate students (antennas, satellite communication technology). R&D engineers in mobile handset manufacturers, spectrum engineers will also find this book of interest.

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Автор: Ramesh Kumar Singh

Written by a welding/metallurgical engineer with over 40 years of experience, Arc  Welding Processes Handbook  delivers the welding and materials expertise required to master complex welding processes and techniques to ensure that the task is done correctly and safely. While reinforcing an understanding of international welding standards and rules. The prefect handbook for those professionals who need an “up- to-date” reference to advance processes as well as those welders new to the field and need to hone their skills. Arc  Welding Processes Handbook  five-part treatment starts with a clear and rigorous exposition of the applications and equipment of Shielded Metal Arc Welding (SMAW) and Gas Tungsten Arc Welding (GTAW), followed by self-contained parts concerning processes applications and equipment for Gas Metal Arc Welding (GMAW), Flux Core Arc Welding (FCAW), and Submerged Arc welding (SAW). Case studies taken directly from the field are included to highlight each part of the handbook. An applied reference, each Part of  Arc  Welding Processes  Handbook  offersvaluable advice regarding the industry or industries where the process is commonly used as well as a description the equipment. The Handbook reaches deeply into the area of nondestructive testing and science. In addition, this Handbook discusses the challenges presented by a number of corrosion-resistant alloys (CRAs). Case studies are included throughout the reference to reinforce an understanding of how these processes were applied in the field and how they intersect with issues that may arise with equipment use and materials.

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Автор: Jason L. Anderson

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Автор: Ferran Mart?n

This book presents and discusses alternatives to ordinary transmission lines for the design and implementation of advanced RF/microwave components in planar technology. This book is devoted to the analysis, study and applications of artificial transmission lines mostly implemented by means of a host line conveniently modified (e.g., with modulation of transverse dimensions, with etched patterns in the metallic layers, etc.) or with reactive loading, in order to achieve novel device functionalities, superior performance, and/or reduced size. The author begins with an introductory chapter dedicated to the fundamentals of planar transmission lines. Chapter 2 is focused on artificial transmission lines based on periodic structures (including non-uniform transmission lines and reactively-loaded lines), and provides a comprehensive analysis of the coupled mode theory. Chapters 3 and 4 are dedicated to artificial transmission lines inspired by metamaterials, or based on metamaterial concepts. These chapters include the main practical implementations of such lines and their circuit models, and a wide overview of their RF/microwave applications (including passive and active circuits and antennas). Chapter 5 focuses on reconfigurable devices based on tunable artificial lines, and on non-linear transmission lines. The chapter also introduces several materials and components to achieve tuning, including diode varactors, RF-MEMS, ferroelectrics, and liquid crystals. Finally, Chapter 6 covers other advanced transmission lines and wave guiding structures, such as electroinductive-/magnetoinductive-wave lines, common-mode suppressed balanced lines, lattice-network artificial lines, and substrate integrated waveguides. Artificial Transmission Lines for RF and Microwave Applications provides an in-depth analysis and discussion of artificial transmission lines, including design guidelines that can be useful to researchers, engineers and students.

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Автор: Karim Said

This book explores the impact of information systems on the management of North–South asymmetric strategic alliances through a series of in-depth case studies which analyze different types of partnerships. Positioned at the heart of the value creation process, the choice of information system seems to be becoming a strategic issue which should be centered not only on the organizational decisions related to the type of alliance but also the management systems of each of the partners. The authors provide an understanding of the nature of this relationship between the organizational structure and the method of information system integration in asymmetric alliances. The in-depth analysis of strategic alliance case-studies illustrates the different methods of information system integration, which are themselves linked to the organisational and structural choices of the alliance. These methods are characterized by information-sharing and coordination mechanisms as well as the balance of control over shared activities developed by the distinct partners.

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Автор: Hans Berger

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Автор: Luc Jaulin

In order to enable a better understanding of the key concepts of automation, this book develops the fundamental aspects of the field while also proposing numerous concrete exercises and their solutions. The theoretical approach that it presents fundamentally uses the state space and makes it possible to process general and complex systems in a simple way, involving several switches and sensors of different types. This approach requires the use of developed theoretical tools such as linear algebra, analysis and physics, generally taught in preparatory classes for specialist engineering courses.

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Автор: Hans Berger

Die speicherprogrammierbare Steuerung (SPS) SIMATIC S7-1500 setzt Ma?st?be in Leistung und Produktivit?t. Der Controller gew?hrleistet mit seiner Systemperformance und mit PROFINET als Standard-Interface kurze Reaktionszeiten bei hoher Flexibilit?t f?r Aufgaben in der gesamten Produktionsautomatisierung und bei Applikationen f?r mittelgro?e bis zu High-End-Maschinen. Die Engineeringsoftware STEP 7 Professional bietet mit TIA Portal eine Benutzeroberfl?che, die auf intuitive Bedienung abgestimmt ist. Die Funktionalit?t umfasst alle Belange der Automatisierung, von der Konfiguration der Controller ?ber die Programmierung in den IEC-Sprachen KOP, FUP, SCL und AWL bis zum Programmtest. Das Buch beschreibt die Hardware-Komponenten des Automatisierungssystems S7-1500, seine Konfiguration und Parametrierung. Eine fundierte Einf?hrung in STEP 7 Professional V15 veranschaulicht die Grundlagen der Programmierung und St?rungssuche. Einsteigern vermittelt es die Grundlagen der Automatisierungstechnik mit SIMATIC S7-1500, Umsteiger von anderen SIMATIC-Steuerungen erhalten die daf?r n?tigen Kenntnisse.

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Автор: Ольга Тузова

Книга написана на основе опыта работы с детьми 5–7-х классов на уроках информатики и внеурочных занятиях. Рассмотрено более 20 творческих проектов с использованием учебной платы BBC micro:bit. Ребенок шаг за шагом через игру и творчество освоит основы программирования, научится проектировать и конструировать простейшие электронные устройства. Особое внимание уделено разработке увлекательных компьютерных игр. Разработка кода выполняется в дружелюбной для детей в Scratch-подобной среде визуального программирования MakeCode. Книга включает в себя подробные инструкции по разработке программ и скриншоты, а также ссылки в форме QR-кодов на готовые программы. Электронный архив на сайте издательства содержит чертежи моделей конструкций и инструкции по их сборке.

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Автор: Germar M?ller

Grundlage der Berechnung elektrischer Maschinen ist das Verstandnis wesentlicher physikalischer Zusammenhange. Im zweiten Band der Reihe Elektrische Maschinen werden diese Zusammenhange schrittweise herausgearbeitet und analytisch formuliert. Das Lehrbuch stellt alle Werkzeuge bereit, die zur Berechnung rotierender elektrischer Maschinen benotigt werden. Es zeichnet sich durch eine fur die Buchreihe Elektrische Maschinen typische einheitliche und geschlossene Darstellungsweise aus. Das erste Kapitel widmet sich ausfuhrlich den Wicklungen elektrischer Maschinen, und in den Kapiteln 2 bis 8 werden die weiteren Elemente und Effekte vorgestellt, die in allen Maschinenarten vorkommen. Mit diesem 'Baukasten' wird anschlie?end der komplette Entwurfs- und Berechnungsgang wichtiger Maschinenarten behandelt. Dabei werden typische Anforderungen aus der Praxis und Optimierungsfragen ausfuhrlich berucksichtigt. Dieses Handbuch ist unentbehrlich fur die Berechnungspraxis und eine wertvolle Informationsquelle fur jeden Entwicklungsingenieur, der mit dem Entwurf elektrischer Maschinen befasst ist.

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Автор: Liudong Xing

Recent advances in science and technology have made modern computing and engineering systems more powerful and sophisticated than ever. The increasing complexity and scale imply that system reliability problems not only continue to be a challenge but also require more efficient models and solutions. This is the first book systematically covering the state-of-the-art binary decision diagrams and their extended models, which can provide efficient and exact solutions to reliability analysis of large and complex systems. The book provides both basic concepts and detailed algorithms for modelling and evaluating reliability of a wide range of complex systems, such as multi-state systems, phased-mission systems, fault-tolerant systems with imperfect fault coverage, systems with common-cause failures, systems with disjoint failures, and systems with functional dependent failures. These types of systems abound in safety-critical or mission-critical applications such as aerospace, circuits, power systems, medical systems, telecommunication systems, transmission systems, traffic light systems, data storage systems, and etc. The book provides both small-scale illustrative examples and large-scale benchmark examples to demonstrate broad applications and advantages of different decision diagrams based methods for complex system reliability analysis. Other measures including component importance and failure frequency are also covered. A rich set of references is cited in the book, providing helpful resources for readers to pursue further research and study of the topics. The target audience of the book is reliability and safety engineers or researchers. The book can serve as a textbook on system reliability analysis. It can also serve as a tutorial and reference book on decision diagrams, multi-state systems, phased-mission systems, and imperfect fault coverage models.

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Автор: Группа авторов

Based on the results of two bioenergy research initiatives in Germany, this reference examines the sustainable management of wood biomass in rural areas. The large number of participating organizations and research institutes ensures a balanced and unbiased view on the potentials and risks is presented, taking into account economic, ecological, and social aspects. Most of the results reported are available here for the first time in English and have been collated in central Europe, but are equally applicable to other temperate regions. They highlight best practices for enhancing dendromass potential and productivity, while discussing the implications on rural economies and ecosystems.

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Автор: Группа авторов

Can we emulate nature's technology in chemistry? Through billions of years of evolution, Nature has generated some remarkable systems and substances that have made life on earth what it is today. Increasingly, scientists are seeking to mimic Nature's systems and processes in the lab in order to harness the power of Nature for the benefit of society. Bioinspiration and Biomimicry in Chemistry explores the chemistry of Nature and how we can replicate what Nature does in abiological settings. Specifically, the book focuses on wholly artificial, man-made systems that employ or are inspired by principles of Nature, but which do not use materials of biological origin. Beginning with a general overview of the concept of bioinspiration and biomimicry in chemistry, the book tackles such topics as: Bioinspired molecular machines Bioinspired catalysis Biomimetic amphiphiles and vesicles Biomimetic principles in macromolecular science Biomimetic cavities and bioinspired receptors Biomimicry in organic synthesis Written by a team of leading international experts, the contributed chapters collectively lay the groundwork for a new generation of environmentally friendly and sustainable materials, pharmaceuticals, and technologies. Readers will discover the latest advances in our ability to replicate natural systems and materials as well as the many impediments that remain, proving how much we still need to learn about how Nature works. Bioinspiration and Biomimicry in Chemistry is recommended for students and researchers in all realms of chemistry. Addressing how scientists are working to reverse engineer Nature in all areas of chemical research, the book is designed to stimulate new discussion and research in this exciting and promising field.

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Автор: Группа авторов

Sets the stage for large-scale production of biofuels and bio-based chemicals In response to diminishing supplies as well as the environmental hazards posed by fossil fuels and petrochemicals, interest and demand for green, sustainable biofuels and bio-based chemicals are soaring. Biomass may be the solution. It is an abundant carbon-neutral renewable feedstock that can be used for the production of fuels and chemicals. Currently, biorefineries use corn, soybeans, and sugarcane for bioethanol and biodiesel production; however, there are many challenges facing biorefineries, preventing biomass from reaching its full potential. This book provides a comprehensive review of bioprocessing technologies that use lignocellulosic biomass for the production of biofuels, biochemicals, and biopolymers. It begins with an overview of integrated biorefineries. Next, it covers: Biomass feedstocks, including sugar, starch, oil, and energy crops as well as microalgae Pretreatment technologies for lignocellulosic biomass Hydrolytic enzymes used in biorefineries for the hydrolysis of starch and lignocelluloses Bioconversion technologies for current and future biofuels such as ethanol, biodiesel, butanol, hydrogen, and biogas Specialty chemicals, building block chemicals, and biopolymers produced via fermentation Phytochemicals and functional food ingredients extracted from plant materials All the chapters have been written and edited by leading experts in bioprocessing and biorefining technologies. Contributions are based on a thorough review of the literature as well as the authors' firsthand experience developing and working with bioprocessing technologies. By setting forth the current state of the technology and pointing to promising new directions in research, Bioprocessing Technologies in Biorefinery for Sustainable Production of Fuels, Chemicals, and Polymers will enable readers to move towards large-scale, sustainable, and economical production of biofuels and bio-based chemicals.

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Автор: Maboula Soumahoro

In this highly original book, Maboula Soumahoro explores the cultural and political vastness of the Black Atlantic, where Africa, Europe, and the Americas were tied together by the brutal realities of the slave trade and colonialism. Each of these spaces has its own way of reading the Black body and the Black experience, and its own modes of visibility, invisibility, silence, and amplification of Black life. By weaving together her personal history with that of France and its abiding myth of color-blindness, Maboula Soumahoro highlights the banality and persistence of structural racism in France today, and shows that freedom will be found in the journey and movement between the sites of the Atlantic triangle. Africana is the name of that freedom. How can we build and reflect on a collective diasporic identity through a personal journey? What are the limits and possibilities of this endeavor, when the personal journey is that of oft-erased bodies and stories, de-humanized lives, and when Black populations in Africa, the Americas, and Europe identify and misidentify with each other, their sensibilities shaped by the particular locales in which their lives unfold? This book makes an important intellectual contribution to contemporary public conversations and theoretical inquiry into race, racism, blackness, and identity today, as it probes and questions the academic methodologies that have functioned as structures of exclusion.

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Автор: Julian Knight

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Автор: Ali Mahdoum

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Автор: Группа авторов

The book provides the reader with a profound knowledge of basic principles, properties and preferred applications of diverse kinds of CO2 measurement. It shows the advantages, disadvantages and limitations of several methods and gives a comprehensive overview of both possible applications and corresponding boundary conditions. Applications reach from environmental monitoring to safety control to biotechnology and food control and finally to medicine.

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Автор: Stuart Sabol

Using a case study approach, this reference tests the reader’s ability to apply engineering fundamentals to real-world examples and receive constructive feedback Case Studies in Mechanical Engineering provides real life examples of the application of engineering fundamentals. They relate to real equipment, real people and real decisions. They influence careers, projects, companies, and governments. The cases serve as supplements to fundamental courses in thermodynamics, fluid mechanics, heat transfer, instrumentation, economics, and statistics. The author explains equipment and concepts to solve the problems and suggests relevant assignments to augment the cases. Graduate engineers seeking to refresh their career, or acquire continuing education will find the studies challenging and rewarding. Each case is designed to be accomplished in one week, earning up to 15 hours of continuing education credit. Each case study provides methods to present an argument, work with clients, recommend action and develop new business. Key features: Highlights the economic consequences of engineering designs and decisions. Encourages problem solving skills. Application of fundamentals to life experiences. Ability to practice with real life examples. Case Studies in Mechanical Engineering is a valuable reference for mechanical engineering practitioners working in thermodynamics, fluid mechanics, heat transfer and related areas.

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Автор: Группа авторов

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Автор: Группа авторов

Chance, Calculation and Life brings together 16 original papers from the colloquium of the same name, organized by the International Cultural Center of Cerisy in 2019. From mathematics to the humanities and biology, there are many concepts and questions related to chance. What are the different types of chance? Does chance correspond to a lack of knowledge about the causes of events, or is there a truly intrinsic and irreducible chance? Does chance preside over our decisions? Does it govern evolution? Is it at the origin of life? What part do chance and necessity play in biology? This book answers these fundamental questions by bringing together the clear and richly documented contributions of mathematicians, physicists, biologists and philosophers who make this book an incomparable tool for work and reflection.

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Автор: Группа авторов

This proceedings volume features 59 peer-reviewed papers from ICCCI2009 on interface characterization and control technology, powder and composite processing, joining, the control of airborne particulates, new metallic glasses, and interface phenomena at high temperature. ICCCI2009 was supported by the Global COE Program “Center of Excellence for Advanced Structural and Functional Materials Design” lead by Professor Tomoyuki Kakeshita at Osaka University, the Project on Joining Technology for New Metallic Glasses and Inorganic Materials, the Institute of Materials Research (IMR) of Tohoku University, the Materials and Structures Laboratory (MSL) of the Tokyo Institute of Technology, Kobe Gakuin University, Hosokawa Powder Technology Foundation, the Japan JSPS 124th Committee, and the Joining and Welding Research Institute (JWRI) of Osaka University. Over 160 scientists and engineers from academia and industry from 18 different countries attended ICCCI2009 to see and discuss 140 invited and contributed presentations and posters on the state-of-the-art of interface characterization and control for particulate materials, joining, and nanotechnology.

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Автор: Andreas Jess

A fully updated edition of a popular textbook covering the four disciplines of chemical technology?featuring new developments in the field Clear and thorough throughout, this textbook covers the major sub-disciplines of modern chemical technology?chemistry, thermal and mechanical unit operations, chemical reaction engineering, and general chemical technology?alongside raw materials, energy sources and detailed descriptions of 24 important industrial processes and products. It brings information on energy and raw material consumption and production data of chemicals up to date and offers not just improved and extended chapters, but completely new ones as well. This new edition of Chemical Technology: From Principles to Products features a new chapter illustrating the global economic map and its development from the 15th century until today, and another on energy consumption in human history. Chemical key technologies for a future sustainable energy system such as power-to-X and hydrogen storage are now also examined. Chapters on inorganic products, material reserves, and water consumption and resources have been extended, while another presents environmental aspects of plastic pollution and handling of plastic waste. The book also adds four important processes to its pages: production of titanium dioxide, silicon, production and chemical recycling of polytetrafluoroethylene, and fermentative synthesis of amino acids. -Provides comprehensive coverage of chemical technology?from the fundamentals to 24 of the most important processes -Intertwines the four disciplines of chemical technology: chemistry, thermal and mechanical unit operations, chemical reaction engineering and general chemical technology -Fully updated with new content on: power-to-X and hydrogen storage; inorganic products, including metals, glass, and ceramics; water consumption and pollution; and additional industrial processes -Written by authors with extensive experience in teaching the topic and helping students understand the complex concepts Chemical Technology: From Principles to Products, Second Edition is an ideal textbook for advanced students of chemical technology and will appeal to anyone in chemical engineering.

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Автор: Albert Ruehli

Bridges the gap between electromagnetics and circuits by addressing electrometric modeling (EM) using the Partial Element Equivalent Circuit (PEEC) method This book provides intuitive solutions to electromagnetic problems by using the Partial Element Equivalent Circuit (PEEC) method. This book begins with an introduction to circuit analysis techniques, laws, and frequency and time domain analyses. The authors also treat Maxwell's equations, capacitance computations, and inductance computations through the lens of the PEEC method. Next, readers learn to build PEEC models in various forms: equivalent circuit models, non-orthogonal PEEC models, skin-effect models, PEEC models for dielectrics, incident and radiate field models, and scattering PEEC models. The book concludes by considering issues like stability and passivity, and includes five appendices some with formulas for partial elements. Leads readers to the solution of a multitude of practical problems in the areas of signal and power integrity and electromagnetic interference Contains fundamentals, applications, and examples of the PEEC method Includes detailed mathematical derivations Circuit Oriented Electromagnetic Modeling Using the PEEC Techniques is a reference for students, researchers, and developers who work on the physical layer modeling of IC interconnects and Packaging, PCBs, and high speed links.

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Автор: Delphine Gallaud

In contrast to the linear «take-make-dispose» model of resource consumption, a new industrial model is proposed in the form of a circular economy. This model aims to optimize the use of resources and to reduce or eliminate waste, and is based on re-use, repair, ecodesign, industrial ecology, sustainable supply and responsible consumption. Industrial ecology and short supply chains can contribute – particularly on a territorial scale – to the emergence of a real sustainable development. This book develops these concepts and presents experiments that are taking place in France and other countries, in addition to an integrated model which details the mechanisms through which industrial ecology and short supply chains can generate economic, social and environmental profits. The possible issues and obstacles facing these new practices are also analyzed, in order to develop the outline of an adapted management and governance which will enable them to be fully realized.

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Автор: Qi Luo

This book presents a comprehensive insight into the design techniques for different types of CP antenna elements and arrays In this book, the authors address a broad range of topics on circularly polarized (CP) antennas. Firstly, it introduces to the reader basic principles, design techniques and characteristics of various types of CP antennas, such as CP patch antennas, CP helix antennas, quadrifilar helix antennas (QHA), printed quadrifilar helix antennas (PQHA), spiral antenna, CP slot antennas, CP dielectric resonator antennas, loop antennas, crossed dipoles, monopoles and CP horns. Advanced designs such as small-size CP antennas, broadband, wideband and ultra-wideband CP antennas are also discussed, as well as multi-band CP antennas and dual CP antennas. The design and analysis of different types of CP array antennas such as broadband CP patch arrays, dual-band CP arrays, CP printed slot arrays, single-band and multi-band CP reflectarrays, high-gain CP waveguide slot antennas, CP dielectric resonator antenna arrays, CP active arrays, millimetre-waveband CP arrays in LTCC, and CP arrays with electronically beam-switching or beam-steering capabilities are described in detail. Case studies are provided to illustrate the design and implementation of CP antennas in practical scenarios such as dual-band Global Navigation Satellite Systems (GNSS) receivers, satellite communication mobile terminals at the S-band, Radio Frequency Identification (RFID) readers at 2.4 GHz, and Ka-band high-speed satellite communication applications. It also includes the detailed designs for a wideband Logarithmic spiral antenna that can operate from 3.4-7.7 GHz. In addition, the book offers a detailed review of the recent developments of different types of CP antennas and arrays. Presents comprehensive discussions of design techniques for different types of CP antennas: small-size CP antennas, broadband CP antennas, multi-band CP antennas and CP arrays. Covers a wide range of antenna technologies such as microstrip antennas, helix, quadrifilar helix antenna, printed quadrifilar helix antenna, dielectric resonator antennas, printed slots, spiral antennas, monopoles, waveguide slot arrays, reflectarrays, active arrays, millimetre-wave arrays in LTCC, electronically beam-switching arrays and electronically beam-steerable arrays. Reviews recent developments in different types of CP antennas and arrays, reported by industries, researchers and academics worldwide. Includes numerous case studies to demonstrate how to design and implement different CP antennas in practical scenarios. Provides both an introduction for students in the field and an in-depth reference for antenna/RF engineers who work on the development of CP antennas. Circularly Polarized Antennas will be an invaluable guide for researchers in R&D organizations; system engineers (antenna, telecom, space and satellite); postgraduates studying the subjects of antenna and propagation, electromagnetics, RF/microwave/millimetre-wave systems, satellite communications and so on; technical managers and professionals in the areas of antennas and propagation.

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Автор: Группа авторов

Edited by leading experts and pioneers in the field, this is the first up-to-date book on this hot topic. The authors provide synthetic chemists with different methods to activate carbon-carbon sigma bonds in organic molecules promoted by transition metal complexes. They explain the basic principles and strategies for carbon-carbon bond cleavage and highlight recently developed synthetic protocols based on this methodology. In so doing, they cover cleavage of C-C bonds in strained molecules, reactions involving elimination of carbon dioxide and ketones, reactions via retroallylation, and cleavage of C-C bonds of ketones and nitriles. The result is an excellent information source for researchers in academia and industry working in the field of synthetic organic chemistry, while equally serving as supplementary reading for advanced courses in organometallic chemistry and catalysis.

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Автор: Hamid R. Shafie

To fulfill the vision for his latest book, Dr. Hamid Shafie compiled technical information from a vast variety of sources, including implant manufacturers and designers, master dental technicians, implant researchers, and expert clinicians leading the field of implant dentistry worldwide. He and his expert contributors meticulously assembled each chapter to include only the most relevant and up-to-date content and procedures in a concise and simple format. Dr. Shafie follows the same easy-to-read, easy-to-understand format as his best-selling textbook Clinical and Laboratory Manual of Implant Overdentures.Starting with the material science behind implant abutments, the text then describes all of the relevant abutment solutions, providing a step-by-step guide to design and manufacturing of the CAD/CAM abutments and explaining how to adjust prefabricated abutments and one-piece titanium and zirconia implants. In addition to offering the ultimate procedural guide for clinical and laboratory preparation of dental implant abutments, this textbook is filled with useful tips on clinical practice management such as sterilization, instrumentation and trouble-shooting related to implant abutments. Clinical and Laboratory Manual of Dental Implant Abutmentsis the only text devoted exclusively to an in-depth look at implant abutments. Every dental implant clinician, technician, student, and implant industry insider needs this vital work in their library.

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Автор: Peter Sturmey

Case formulation is a key skill for mental health practitioners, and this book provides examples of ten case formulations representing the most common mental health problems in a variety of populations and contexts, offering commentary on contrasting formulations of the same case. Provides an overview of the general features of case formulation and how it can drive treatment Features clinical cases from a variety of populations, focusing on a range of different problems Covers all the major theoretical perspectives in clinical practice – behavioural, cognitive behavioural, psychodynamic, medical , and eclectic Offers commentary on contrasting formulations of the same case for five different clinical problems

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Автор: Jill E. Maddison

Clinical Reasoning in Small Animal Practice presents a revolutionary approach to solving clinical problems. As a veterinarian, especially as a student or new graduate, a ten minute consultation in a busy small animal practice can be a daunting task. By guiding you to think pathophysiologically, this book will help solve clinical problems as efficiently as possible. The authors set out a structured approach with easy to remember rules which can be applied to most clinical signs small animals present with. This reduces the need to remember long lists of differentials and avoids the potential of getting trapped by a perceived obvious diagnosis. The book will help to unlock your potential to solve clinical problems. It also provides a logical rationale for choosing diagnostic tests or treatments which can be clearly communicated to the owner. Written by internationally renowned clinicians and educators in clinical reasoning, key features of the book include: An easy to remember and logical approach to solving a wide range of clinical problems encountered in small animal medicine and neurology An invaluable resource for every level of learner, from student to experienced practitioner Flowcharts and key step markers throughout help illustrate the decision making process Clinical inductive reasoning offers you the ability to solve cases more efficiently, resulting in better treatment and care for pets and happier owners. Clinical Reasoning in Small Animal Practice will help turn a terrifying case into a manageable one!

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Автор: Liz Moor

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Автор: Группа авторов

The definitive guide to CBPR concepts and practice, updated and expanded Community-Based Participatory Research for Health: Advancing Health and Social Equity provides a comprehensive reference for this rapidly growing field in participatory and community-engaged research. Hailed as effective by the Centers for Disease Control and Prevention, CBPR and CEnR represent the link between researchers and community and lead to improved public health outcomes. This book provides practitioner-focused guidance on CBPR and CEnR to help public health professionals, students, and practitioners from multiple other clinical, planning, education, social work, and social science fields to successfully work towards social and health equity. With a majority of new chapters, the book provides a thorough overview of CBPR history, theories of action and participatory research, emerging trends of knowledge democracy, and promising practices. Drawn from a ten-year research effort, this new material is organized around the CBPR Conceptual Model, illustrating the importance of social context, promising partnering practices, and the added value of community and other stakeholder engagement for intervention development and research design. Partnership evaluation, measures, and outcomes are highlighted, with a revised section on policy outcomes, including global health case studies. For the first time, this updated edition also includes access to the companion website, featuring lecture slides of conceptual and partnership evaluation-focused chapters, with resources from appendices to help bring CBPR concepts and practices directly into the classroom. Proven effective year after year, CBPR has become a critically important framework for public health, and this book provides clear reference for all aspects of the practice. Readers will: Examine the latest research on CPBR, and incorporate new insights into practice Understand the history and theoretical basis of CPBR, and why it has been so effective Reflect on critical issues of racism, power, and privilege; trust development; ethical practice within and beyond IRBs; and cultural humility Learn new partnership evaluation and collective reflection strategies, including measures and metrics, to enhance their own practice for improved health and social equity outcomes

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Автор: Группа авторов

This book brings together in a single volume a unique contribution by the top experts around the world in the field of compact semiconductor lasers to provide a comprehensive description and analysis of the current status as well as future directions in the field of micro- and nano-scale semiconductor lasers. It is organized according to the various forms of micro- or nano-laser cavity configurations with each chapter discussing key technical issues, including semiconductor carrier recombination processes and optical gain dynamics, photonic confinement behavior and output coupling mechanisms, carrier transport considerations relevant to the injection process, and emission mode control. Required reading for those working in and researching the area of semiconductors lasers and micro-electronics.

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Автор: Группа авторов

Offers a one-stop reference on the application of advanced modeling and simulation (M&S) in cyber physical systems (CPS) engineering This book provides the state-of-the-art in methods and technologies that aim to elaborate on the modeling and simulation support to cyber physical systems (CPS) engineering across many sectors such as healthcare, smart grid, or smart home. It presents a compilation of simulation-based methods, technologies, and approaches that encourage the reader to incorporate simulation technologies in their CPS engineering endeavors, supporting management of complexity challenges in such endeavors. Complexity Challenges in Cyber Physical Systems: Using Modeling and Simulation (M&S) to Support Intelligence, Adaptation and Autonomy is laid out in four sections. The first section provides an overview of complexities associated with the application of M&S to CPS Engineering. It discusses M&S in the context of autonomous systems involvement within the North Atlantic Treaty Organization (NATO). The second section provides a more detailed description of the challenges in applying modeling to the operation, risk and design of holistic CPS. The third section delves in details of simulation support to CPS engineering followed by the engineering practices to incorporate the cyber element to build resilient CPS sociotechnical systems. Finally, the fourth section presents a research agenda for handling complexity in application of M&S for CPS engineering. In addition, this text: Introduces a unifying framework for hierarchical co-simulations of cyber physical systems (CPS) Provides understanding of the cycle of macro-level behavior dynamically arising from spaciotemporal interactions between parts at the micro-level Describes a simulation platform for characterizing resilience of CPS Complexity Challenges in Cyber Physical Systems has been written for researchers, practitioners, lecturers, and graduate students in computer engineering who want to learn all about M&S support to addressing complexity in CPS and its applications in today’s and tomorrow’s world.

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Автор: Joseph J. S. Shang

Presents numerical algorithms, procedures, and techniques required to solve engineering problems relating to the interactions between electromagnetic fields and fluid flow and interdisciplinary technology for aerodynamics, electromagnetics, chemical-physic kinetics, and plasmadynamics Integrates interlinking computational model and simulation techniques of aerodynamics and electromagnetics Combines classic plasma drift-diffusion theory and electron impact ionization modeling for electromagnetic-aerodynamic interactions Describes models of internal degrees of freedom for vibration relaxation and electron excitations

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Автор: Yamin Li

Uses Verilog HDL to illustrate computer architecture and microprocessor design, allowing readers to readily simulate and adjust the operation of each design, and thus build industrially relevant skills Introduces the computer principles, computer design, and how to use Verilog HDL (Hardware Description Language) to implement the design Provides the skills for designing processor/arithmetic/cpu chips, including the unique application of Verilog HDL material for CPU (central processing unit) implementation Despite the many books on Verilog and computer architecture and microprocessor design, few, if any, use Verilog as a key tool in helping a student to understand these design techniques A companion website includes color figures, Verilog HDL codes, extra test benches not found in the book, and PDFs of the figures and simulation waveforms for instructors

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Автор: Евгений Александрович Басыня

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Автор: Paul McFedries

Cut the cable television cord and cut your monthly bills Are you one of those people who have 500 television channels to choose from and you can never find anything to watch? Maybe it’s time to cut the cable cord and take full control of what’s on your television. All you need to get started with this popular money saving strategy is an Internet connection, a device to stream to, and the advice in this book. With  Cord Cutting For Dummies , you go from evaluating if cord cutting is the right choice for your budget to acquiring the technology to get the programming you actually want. You’ll discover the technology you need for streaming, select the service or services that fit your needs, and make the components of your setup work together—all within your budget.  Cord Cutting For Dummies  offers the steps to going from wired to wireless, including: Deciding if you need to upgrade your Wi-Fi equipment and service. Evaluating your current devices. Adding a smart TV to the mix. Choosing the best streaming services for you—including some free options When you’re ready to untether yourself from the cable or satellite,  Cord Cutting For Dummie s shows you, step by step, how to break free. Pick up a copy and you’ll be watching your favorite movie or TV show in no time!

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Автор: Группа авторов

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Автор: Группа авторов

CYBER SECUTIRY AND NETWORK SECURITY Written and edited by a team of experts in the field, this is the most comprehensive and up-to-date study of the practical applications of cyber security and network security for engineers, scientists, students, and other professionals. Digital assaults are quickly becoming one of the most predominant issues on the planet. As digital wrongdoing keeps on expanding, it is increasingly more important to investigate new methodologies and advances that help guarantee the security of online networks. Ongoing advances and innovations have made great advances for taking care of security issues in a methodical manner. In light of this, organized security innovations have been delivered so as to guarantee the security of programming and correspondence functionalities at fundamental, improved, and engineering levels. This outstanding new volume covers all of the latest advances, innovations, and developments in practical applications for cybersecurity and network security. This team of editors represents some of the most well-known and respected experts in the area, creating this comprehensive, up-to-date coverage of the issues of the day and state of the art. Whether for the veteran engineer or scientist or a student, this volume is a must-have for any library.

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Автор: Daniel T. Larose

Learn methods of data analysis and their application to real-world data sets This updated second edition serves as an introduction to data mining methods and models, including association rules, clustering, neural networks, logistic regression, and multivariate analysis. The authors apply a unified “white box” approach to data mining methods and models. This approach is designed to walk readers through the operations and nuances of the various methods, using small data sets, so readers can gain an insight into the inner workings of the method under review. Chapters provide readers with hands-on analysis problems, representing an opportunity for readers to apply their newly-acquired data mining expertise to solving real problems using large, real-world data sets. Data Mining and Predictive Analytics, Second Edition: Offers comprehensive coverage of association rules, clustering, neural networks, logistic regression, multivariate analysis, and R statistical programming language Features over 750 chapter exercises, allowing readers to assess their understanding of the new material Provides a detailed case study that brings together the lessons learned in the book Includes access to the companion website, www.dataminingconsultant.com, with exclusive password-protected instructor content Data Mining and Predictive Analytics, Second Edition will appeal to computer science and statistic students, as well as students in MBA programs, and chief executives.

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Автор: EMC Services Education

Data Science and Big Data Analytics is about harnessing the power of data for new insights. The book covers the breadth of activities and methods and tools that Data Scientists use. The content focuses on concepts, principles and practical applications that are applicable to any industry and technology environment, and the learning is supported and explained with examples that you can replicate using open-source software. This book will help you: Become a contributor on a data science team Deploy a structured lifecycle approach to data analytics problems Apply appropriate analytic techniques and tools to analyzing big data Learn how to tell a compelling story with data to drive business action Prepare for EMC Proven Professional Data Science Certification Corresponding data sets are available at www.wiley.com/go/9781118876138. Get started discovering, analyzing, visualizing, and presenting data in a meaningful way today!

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Автор: Alexis de Tocqueville

Democracy in America – Volume 1 by Alexis de Tocqueville. Translated by Henry Reeve
libreka classics – These are classics of literary history, reissued and made available to a wide audience. Immerse yourself in well-known and popular titles!

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Автор: Claudia Esperanza Saavedra Bautista

Este texto aborda la pol?tica p?blica de TIC en el contexto educativo de Colombia, integrado por el marco conceptual de pol?ticas p?blicas, TIC y educaci?n, as? como los planes y programas de las TIC en el ?mbito de la educaci?n, en los contextos internacional y nacional, y el an?lisis jurisprudencial sobre TIC en la educaci?n. Adem?s, presenta una mirada hist?rica del ?rea de tecnolog?a e inform?tica desde las pol?ticas p?blicas, donde desarrolla la perspectiva te?rica, revisi?n de antecedentes, el ?rea de tecnolog?a e inform?tica desde las pol?ticas p?blicas, los programas que forman educadores para el ?rea de tecnolog?a e inform?tica en el contexto colombiano y latinoamericano, as? como las pol?ticas que han respaldado la formaci?n de educadores en el ?rea de tecnolog?a e inform?tica en el contexto internacional. Adem?s, parte del texto se dedica a analizar la formaci?n de educadores desde la universidad, donde se presentan algunos antecedentes investigativos de la formaci?n de educadores, la formaci?n docente y sus concepciones te?ricas, las pol?ticas educativas para la formaci?n de educadores en TIC en la UPTC, los retos y desaf?os de la formaci?n universitaria frente a las TIC, y los desaf?os de los educadores universitarios ante las crisis y la sociedad actual.

Серия: Investigaci?n

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Автор: Jane Kucera

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Автор: Группа авторов

This book presents methods for the design of the main microwave active devices. The first chapter focuses on amplifiers working in the linear mode. The authors present the problems surrounding narrowband and wideband impedance matching, stability, polarization and the noise factor, as well as specific topologies such as the distributed amplifier and the differential amplifier. Chapter 2 concerns the power amplifier operation. Specific aspects on efficiency, impedance matching and class of operation are presented, as well as the main methods of linearization and efficiency improvement. Frequency transposition is the subject of Chapter 3. The author presents the operating principle as well as the different topologies using transistors and diodes. Chapter 4 is dedicated to the operation of fixed frequency and tunable oscillators such as the voltage controlled oscillator (VCO) and the yttrium iron garnet (YIG). The final chapter presents the main control functions, i.e. attenuators, phase shifters and switches.

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