springer nature okt 2015 (434 risultati)

Taschenbuch. Condizione: Neu. Neuware -Die Autorinnen geben einen übersichtlichen und kompakten Einblick in die Fragen, was genau man unter 'sozial kompetentem Verhalten' versteht, wie sich soziale Kompetenz entwickelt und wodurch sie beeinflussbar ist. Zu den Entwicklungsaufgaben in der Kindheit und Jugend zählt neben der körperlichen und geistigen auch die Entwicklung einer sozialen Kompetenz. Beobachtet man viele Kinder und Jugendliche bzw. befragt man deren Eltern und Erzieher, trifft man oft auf überzogenes Verhalten auf der einen Seite bzw. maßlose Überforderung auf der anderen. In diesem Zusammenhang stellt sich somit die Frage: Warum fällt es vielen Kindern und Jugendlichen schwer, sozial kompetent aufzutreten und zu agieren 52 pp. Deutsch.

Taschenbuch. Condizione: Neu. Neuware -This book is for anyone who owns, or is thinking of owning, a Vixen Star Book Ten telescope mount or its predecessor. A revolution in amateur astronomy has occurred in the past decade with the wide availability of high tech, computer-driven, Go-To telescopes. Vixen Optics is leading the way by offering the Star Book Ten system, with its unique star map graphics software. The Star Book Ten is the latest version of computer telescope control using star map graphics as a user interface, first introduced in the original Star Book first offered in 2003.The increasingly complicated nature of this software means that learning to optimizethis programis not straightforward, and yet the resulting views when all features are correctly deployed can be phenomenal.After a short history of computerized Go-To telescopes for the consumer amateur astronomer market,Chenoffers a treasury of technical information.His advice, tips, and solutions aid the user in getting the most out of the Star Book Ten system in observing sessions.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 304 pp. Englisch.

Taschenbuch. Condizione: Neu. Neuware -This volume provides an introduction to the analytical and numerical aspects of partial differential equations (PDEs). It unifies an analytical and computational approach for these; the qualitative behaviour of solutions being established using classical concepts: maximum principles and energy methods. Notable inclusions are the treatment of irregularly shaped boundaries, polar coordinates and the use of flux-limiters when approximating hyperbolic conservation laws. The numerical analysis of difference schemes is rigorously developed using discrete maximum principles and discrete Fourier analysis. A novel feature is the inclusion of a chapter containing projects, intended for either individual or group study, that cover a range of topics such as parabolic smoothing, travelling waves, isospectral matrices, and the approximation of multidimensional advection¿diffusion problems.The underlying theory is illustrated by numerous examples and there are around 300 exercises, designedto promote and test understanding. They are starred according to level of difficulty. Solutions to odd-numbered exercises are available to all readers while even-numbered solutions are available to authorised instructors.Written in an informal yet rigorous style, Essential Partial Differential Equations is designed for mathematics undergraduates in their final or penultimate year of university study, but will be equally useful for students following other scientific and engineering disciplines in which PDEs are of practical importance. The only prerequisite is a familiarity with the basic concepts of calculus and linear algebra.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 380 pp. Englisch.

Buch. Condizione: Neu. Neuware -This comprehensive textbook/reference presents a focused review of the state of the art in privacy research, encompassing a range of diverse topics. The first book of its kind designed specifically to cater to courses on privacy, this authoritative volume provides technical, legal, and ethical perspectives on privacy issues from a global selection of renowned experts. Features: examines privacy issues relating to databases, P2P networks, big data technologies, social networks, and digital information networks; describes the challenges of addressing privacy concerns in various areas; reviews topics of privacy in electronic health systems, smart grid technology, vehicular ad-hoc networks, mobile devices, location-based systems, and crowdsourcing platforms; investigates approaches for protecting privacy in cloud applications; discusses the regulation of personal information disclosure and the privacy of individuals; presents the tools and the evidence to better understand consumers¿ privacy behaviors.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 428 pp. Englisch.

Buch. Condizione: Neu. Neuware -This book explores the importance of strategy and how to make it work in an environment characterised by constant change. With a specific focus on the Asia Pacific region, anticipated to become the epicentre of global economic activity, it offers insights into the optimisation of economic potential and social cohesion enabled by leaders, which is crucial to the global economy and living standards. It highlights sound foresight, strategic thinking and innovation as the critical underpinnings of successful business and provides a comprehensive guide to combining practice and theory to ensure successful strategies, from formulation to execution.The book also builds on the concepts of change, the purpose of business, foresight, strategic thinking, strategic planning and innovation to present a holistic view of how these essential elements can be integrated in practice. Combined with a special contribution by Chaly Mah, the CEO of Deloitte Asia Pacific, the book carefully balancesprofessional and academic insights to optimally benefit its readers and will be of interest to industry practitioners, researchers and students alike.Springer-Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 220 pp. Englisch.

Buch. Condizione: Neu. Neuware -This book is intended for researchers and postgraduates who are interested in the consensus reaching process in group decision-making problems. It puts forward new optimization-based decision support approaches to help decision-makers find roadmaps to consensus with minimum adjustments. Simulation experiments and comparison analysis are subsequently conducted to assess the validity of the proposal. After reading this book, readers will possess a number of valuable tools for building consensus with minimum adjustments in the context of group decision-making. Further, the proposed approach can effectively reduce costs in consensus building.¿Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 216 pp. Englisch.

Buch. Condizione: Neu. Neuware -This book reveals the secrets of Yamato Transport¿s success in maintaining and extending its leadership in Japan¿s domestic parcel delivery market. It presents six cases that illustrate how Yamato's flagship service, TA-Q-BIN, has evolved since the 1970s to the benefit of consumers, particularly urban dwellers, and how TA-Q-BIN has become an integral part of Japanese daily life. Each of the six unique cases serves as an independent teaching case for undergraduate and graduate students, describing the particular service design, operations management, innovation, supplier management, and social responsibility within the context of an Asian last-mile logistics service provider. The book also includes insightful presentations of the challenges facing supply chain and logistics service providers in Asia, and their innovative responses to these challenges using real-world cases. Besides featuring interviews with Yamatös key stakeholders and their strategic clients, Japan-based and other Asia-Pacific Yamato operational centers make up the field method included in this book, while secondary data is drawn from trade and academic domains. Some of the cases are written in a didactic fashion, with suitable stopping points for students to pause and deliberate over the managerial issues confronting the decisions that Yamato makes during the course of its business and operational strategies. The results are particularly useful to readers interested in how operations and logistics decision-making are practiced in a homogeneous Asian context and in an urban environment. This book is essential reading for undergraduate and MBA students, as well as practitioners in industry.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 204 pp. Englisch.

Taschenbuch. Condizione: Neu. Neuware -This book presents new findings on the biography of Friedrich List, one of the world¿s most important and popular economists. Following List'stracks in Pennsylvania and discussing several new sources, the author, Eugen Wendler, focuses on List's life and exile in the United States between 1825 and 1832. This richly illustrated book is as informative as it is well written. The author is a respected expert on the life and work of Friedrich List.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 64 pp. Englisch.

Taschenbuch. Condizione: Neu. Neuware -This book is devoted to background material and recently developed mathematical methods in the study of infinite-dimensional dissipative systems. The theory of such systems is motivated by the long-term goal to establish rigorous mathematical models for turbulent and chaotic phenomena. The aim here is to offer general methods and abstract results pertaining to fundamental dynamical systems properties related to dissipative long-time behavior. The book systematically presents, develops and uses the quasi-stability method while substantially extending it by including for consideration new classes of models and PDE systems arising in Continuum Mechanics. The book can be used as a textbook in dissipative dynamics at the graduate level.Igor Chueshov is a Professor of Mathematics at Karazin Kharkov National University in Kharkov, Ukraine.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 408 pp. Englisch.

Taschenbuch. Condizione: Neu. Neuware -This book presents a simple and systematic description of EM design of antenna arrays. Printed dipole antennas are known to be simple yet more efficient than wire antennas. The dielectric substrate and the presence of ground plane affect the antenna performance and the resonant frequency is shifted. This book includes the EM design and performance analysis of printed dipole arrays on planar and cylindrical substrates. The antenna element is taken as half-wave centre-fed dipole. The substrate is taken as low-loss dielectric. The effect of substrate material, ground plane, and the curvature effect is discussed. Results are presented for both the linear and planar dipole arrays. The performance of dipole array is analyzed in terms of input impedance, return loss, and radiation pattern for different configurations. The effect of curved platform (substrate and ground plane) on the radiation behaviour of dipole array is analyzed. The book explains fundamentals of EM design and analysis of dipole antenna array through numerous illustrations. It is essentially a step-to-step guide for beginners in the field of antenna array design and engineering.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 96 pp. Englisch.

Taschenbuch. Condizione: Neu. Neuware -This book describes the ray tracing effects inside different quadric surfaces. Analytical surface modeling is a priori requirement for electromagnetic (EM) analysis over aerospace platforms. Although numerically-specified surfaces and even non-uniform rational basis spline (NURBS) can be used for modeling such surfaces, for most practical EM applications, it is sufficient to model them as quadric surface patches and the hybrids thereof. It is therefore apparent that a vast majority of aerospace bodies can be conveniently modeled as combinations of simpler quadric surfaces, i.e. hybrid of quadric cylinders and quadric surfaces of revolutions. Hence the analysis of geometric ray tracing inside is prerequisite to analyzing the RF build-up. This book, describes the ray tracing effects inside different quadric surfaces such as right circular cylinder, general paraboloid of revolution (GPOR), GPOR frustum of different shaping parameters and the corresponding visualization of the ray-path details. Finally ray tracing inside a typical space module, which is a hybrid of a finite segment of right circular cylinder and a frustum of GPOR is analyzed for practical aerospace applications.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 88 pp. Englisch.

Buch. Condizione: Neu. Neuware -This book reviews the theories regarding commonly occurring developmental issues among Chinese adolescents in Hong Kong, the application of Positive Youth Development (PYD) to a large-scale primary prevention program and the impact of PYD on student well-being, indexed according to adolescent developmental issue. Using multiple strategies, it presents the overall constructs and frameworks supporting P.A.T.H.S. in response to the various psychosocial needs of Hong Kong¿s youth. Some of the issues covered include substance abuse, sexual behavior, internet addiction, bullying and cyber-bullying. The book argues for the effectiveness of the school-based program in promoting student well-being in modern Hong Kong society and will be of interest to undergraduate and postgraduate students, university instructors, researchers, social workers, pediatricians, youth workers, educators, administrators, psychologists, school principals and allied professionals looking to promote whole-person development in junior form students and especially those with an interest in education in China.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 364 pp. Englisch.

Taschenbuch. Condizione: Neu. Neuware -In this book, a modified improved LMS algorithm is employed for weight adaptation of dipole array for the generation of beam pattern in multiple signal environments. In phased arrays, the generation of adapted pattern according to the signal scenario requires an efficient adaptive algorithm. The antenna array is expected to maintain sufficient gain towards each of the desired source while at the same time suppress the probing sources. This cancels the signal transmission towards each of the hostile probing sources leading to active cancellation. In the book, the performance of dipole phased array is demonstrated in terms of fast convergence, output noise power and output signal-to-interference-and noise ratio. The mutual coupling effect and role of edge elements are taken into account. It is established that dipole array along with an efficient algorithm is able to maintain multilobe beamforming with accurate and deep nulls towards each probing source. This work has application to the active radar cross section (RCS) reduction. This book consists of formulation, algorithm description and result discussion on active cancellation of hostile probing sources in phased antenna array. It includes numerous illustrations demonstrating the theme of the book for different signal environments and array configurations. The concepts in this book are discussed in an easy-to-understand manner, making it suitable even for the beginners in the field of phased arrays and adaptive array processing.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 80 pp. Englisch.

Taschenbuch. Condizione: Neu. Neuware -This book focuses on high-gain antennas in the terahertz spectrum and their optimization. The terahertz spectrum is an unallocated EM spectrum, which is being explored for a number of applications, especially to meet increasing demands of high data rates for wireless space communications. Space communication systems using the terahertz spectrum can resolve the problems of limited bandwidth of present wireless communications without radio-frequency interference. This book describes design of such high-gain antennas and their performance enhancement using photonic band gap (PBG) substrates. Further, optimization of antenna models using evolutionary algorithm based computational engine has been included. The optimized high-performance compact antenna may be used for various wireless applications, such as inter-orbital communications and on-vehicle satellite communications.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 76 pp. Englisch.

Taschenbuch. Condizione: Neu. Neuware -This book presents the detailed analytical formulation for the RCS of parallel-fed linear dipole array in the presence of mutual coupling. The radar cross section (RCS) of an object represents its electromagnetic (EM) scattering properties for a given incident wave. The analysis of scattered field is critical in military and defence arenas, especially while designing low-observable platforms. It is well-known that the presence of an antenna/array on the target influences its echo area significantly. The primary cause for such scattering of the incident signals is reflection that occurs within the antenna aperture and its feed network. In this book, the RCS estimation is done based on the signal path within the antenna system. The scattered field is expressed in terms of array design parameters including the reflection and transmission coefficients. The computed results show the variation in the RCS pattern with and without mutual coupling. The effect of finite dipole-length, inter-element spacing, scan angle, array configuration, amplitude distribution and terminating load impedance on the RCS pattern is studied. It is shown that the array RCS can be controlled by choosing optimum design parameters, including terminating impedance and geometric configuration. This book explains each step of the RCS estimation and analysis of dipole array with detailed schematics, tables and illustrations. Moreover, it includes parametric analysis of RCS estimation and control. This book provides an insight into the phenomenon of scattering within the phased array system.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 88 pp. Englisch.

Taschenbuch. Condizione: Neu. Neuware -This book focuses on determination of scattering of parallel-fed planar dipole arrays in terms of reflection and transmission coefficients at different levels of the array system. In aerospace vehicles, the phased arrays are often in planar configuration. The radar cross section (RCS) of the vehicle is mainly due to its structure and the antennas mounted over it. There can be situation when the signatures due to antennas dominate over the structural RCS of the platform. This necessitates the study towards the reduction and control of antenna/ array RCS. The planar dipole array is considered as a stacked linear dipole array. A systematic, step-by-step approach is used to determine the RCS pattern including the finite dimensions of dipole antenna elements. The mutual impedance between the dipole elements for planar configuration is determined. The scattering till second-level of couplers in parallel feed network is taken into account. The phase shifters are modelled as delay line. All the couplers in the feed network are assumed to be four port devices. It is shown that the array RCS can be reduced considerably for a low observable platform by an optimization of array design parameters even in the presence of mutual coupling. This book presents a systematic step-by-step analytical formulation for RCS of planar half-wavelength centre-fed dipole arrays through various schematics and illustrations. The analytical description and analysis provided in this book should be useful forstudents, researchers, and design engineers of phased arrays.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 68 pp. Englisch.

Buch. Condizione: Neu. Neuware -This book formulates a greater understanding of how to enable a capacity for building social professional practice related to technology-enriched teaching and learning (TETL) specific, but not limited to, educational settings. This book comes at a time when many in education are struggling to provide a technology enriched learning experience for students who are entering classrooms with high expectations for such an experience. The focus on the protective factors and identified resilient professional practices, instead of on well documented and commonly cited risk factors and barriers that impede the effective integration of TETL, represents a distinguishing feature of this work. By attempting to better understand and document how two schools that were classified as resilient in their use of technology have been able to overcome risk factors (e.g., budgetary constraints, a lack of resources, a lack of training, technological support issues), this book will offer the unique concept of techno-resiliency and some ofits deeper insights and strategies.Springer-Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 140 pp. Englisch.

Buch. Condizione: Neu. Neuware -This book pursues both narrative and analytic approaches to better understand Chinäs spatial economic development and its implications for Tibet. Accordingly, this book focuses on Tibet ¿ an autonomous region in the far west of China ¿ as the subject of an in-depth case study, highlighting its unique geopolitical and socioeconomic features and external and boundary conditions. Chinäs great diversity in terms of physical geography, resource endowment, political economy, and ethnicity and religion has posed challenges to the studies of spatial and interprovincial issues. Indeed, the Chinese nation is far too huge and spatially diverse to be easily interpreted. The only feasible approach to analyzing it is, therefore, to divide it into smaller geographical elements so as to arrive at better insights into the country¿s spatial mechanisms and regional characteristics. In this context, the book combines analytic and narrative approaches.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 220 pp. Englisch.

Buch. Condizione: Neu. Neuware -This book combines scientific research and professional insights on brand and marketing strategy development in major emerging growth markets. It presents a detailed outline of the Brazil, Russia, India and China (BRIC) markets to understand their cultural and socio-economic complexity. With emerging markets at the center, major paradigm shifts are explained such as 'one world strategies'. The author reveals the importance of market-driven positioning that uses local differences and consumer preferences as opportunities without contradicting a corporation¿s global positioning. Professionals in international marketing and business strategists will find the hands-on guidance to 25 new success strategies particularly useful. This book is also a must-read for people dealing with branding and marketing in a ¿glocalized¿ world.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 428 pp. Englisch.

Buch. Condizione: Neu. Neuware -The book selects Guangzhou, which has the highest crime rate in China, as a research site to study patterns of crime and social disorganization. It combines methods of content analyses with ethnographic fieldwork. The research first selected 1422 crime cases reported by the influential Southern Metropolis Daily in 2013 to identify the general crime-distribution pattern. The findings suggest that both spatial and demographic-density distribution of criminal cases in Guangzhou show a gradient circle pattern from city center to suburb. Focusing on three selected typical communities, the thesis finds important patterns of crime and social disorganization that are very different from Western research. These findings are organized according to major correlates of social disorganization, including unemployment, marriage and family, residential stability, ethnic heterogeneity, social equality, social capital, social control, social isolation and social exclusion, community cohesion, trust and fear, traditions, morals and beliefs, language. These findings extend and elaborate Social Disorganization Theory in urban China. This book can be used as a textbook for college and Ph.D. students majoring in law and sociology, as well as a reference book for professionals in related fields. Although academic, this book is written in such a way that it will also appeal to a general audience.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 192 pp. Englisch.

Buch. Condizione: Neu. Neuware -In addition to acting as a training guide for pharmacists, pharmacy residents and pharmacy students who seek to practice in areas associated with patients on anticoagulant therapy, the information presented within highlights the growing role of the pharmacist in these contexts. Readers will find useful information on anticoagulant management across all pharmacy practice areas, including the inpatient, ambulatory, emergency services and transitions of care settings. Particular attention is given to summarizing best practices and providing ¿real world¿ examples of ways in which pharmacists can be involved in anticoagulation management and the impact of such involvement. In the first major section of the book, each chapter focuses on the role of the pharmacist in the management of medication with a specific type of anticoagulants (e.g. warfarin, heparin and target-specific oral agents) in various healthcare settings. A broader overview of the clinical management of anticoagulation therapy is provided in the second major section, including descriptions of the role of pharmacists in assessing venous thromboembolism risk, ensuring patients receive appropriate prophylactic therapy, and monitoring outcomes.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 292 pp. Englisch.

Taschenbuch. Condizione: Neu. Neuware -This book explores the terahertz antenna technology towards implementation of compact, consistent and cheap terahertz sources, as well as the high sensitivity terahertz detectors. The terahertz EM band provides a transition between the electronic and the photonic regions thus adopting important characteristics from these regimes. These characteristics, along with the progress in semiconductor technology, have enabled researchers to exploit hitherto unexplored domains including satellite communication, bio-medical imaging, and security systems. The advances in new materials and nanostructures such as graphene will be helpful in miniaturization of antenna technology while simultaneously maintaining the desired output levels. Terahertz antenna characterization of bandwidth, impedance, polarization, etc. has not yet been methodically structured and it continues to be a major research challenge. This book addresses these issues besides including the advances of terahertz technology in space applications worldwide, along with possibilities of using this technology in deep space networks.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 76 pp. Englisch.

Buch. Condizione: Neu. Neuware -This well-illustrated book provides step-by-step guidance on the various techniques ¿ microlaryngoscopic, fiberoptic endoscopic and transcutaneous ¿ that can be employed for the purpose of injection laryngoplasty, a surgical procedure in which a foreign material is injected into the vocal fold. The anatomy and function of the region are first explained, with identification of the causes and means of evaluation of glottic and neoglottic insufficiency. Advice is then provided on the choice of material for injection laryngoplasty, including absorbable and long-lasting options, on the basis of careful analysis that takes into account both the recent literature and the authors¿ own experiences. Detailed descriptions of the surgical indications and different procedures follow and for ease of reference, clear flow charts on diagnosis and indications are also included. The book concludes with chapters on the use of injection laryngoplasty specifically in the pediatric population and on postoperative care and speech therapy following the procedure. Injection Laryngoplasty will provide valuable assistance to all surgeons wishing to perform this kind of surgery.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 104 pp. Englisch.

Taschenbuch. Condizione: Neu. Neuware -This book presents a comprehensive review of plasma-based stealth, covering the basics, methods, parametric analysis, and challenges towards the realization of the idea. The concealment of aircraft from radar sources, or stealth, is achieved through shaping, radar absorbing coatings, engineered materials, or plasma, etc. Plasma-based stealth is a radar cross section (RCS) reduction technique associated with the reflection and absorption of incident electromagnetic (EM) waves by the plasma layer surrounding the structure. A plasma cloud covering the aircraft may give rise to other signatures such as thermal, acoustic, infrared, or visual. Thus it is a matter of concern that the RCS reduction by plasma enhances its detectability due to other signatures. This needs a careful approach towards the plasma generation and its EM wave interaction. The book starts with the basics of EM wave interactions with plasma, briefly discuss the methods used to analyze the propagation characteristics of plasma, and its generation. It presents the parametric analysis of propagation behaviour of plasma, and the challenges in the implementation of plasma-based stealth technology. This review serves as a starting point for the graduate and research students, scientists and engineers working in the area of low-observables and stealth technology.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 76 pp. Englisch.

Taschenbuch. Condizione: Neu. Neuware -The book is about the key elements required for designing, building and controlling effective artificial swarms comprised of multiple moving physical agents. Therefore this book presents the fundamentals of each of those key elements in the particular frame of dynamic swarming, specifically exposing the profound connections between these elements and establish some general design principles for swarming behaviors. This scientific endeavor requires an inter-disciplinary approach: biomimetic inspiration from ethology and ecology, study of social information flow, analysis of temporal and adaptive signaling network of interaction, considerations of control of networked real-time systems, and lastly, elements of complex adaptive dynamical systems. This book offers a completely new perspective on the scientific understanding of dynamic collective behaviors thanks to its multi-disciplinary approach and its focus on artificial swarm of physical agents. Two of the key problems in understanding the emergence of swarm intelligent behaviors are identifying the social interaction rules a.k.a. the behavioral algorithm and uncovering how information flows between swarming agents. While most books about swarm dynamics have been focusing on the former, this book emphasizes the much-less discussed topic of distributed information flow, always with the aim of establishing general design principles.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 120 pp. Englisch.

Taschenbuch. Condizione: Neu. Neuware -This book presents a detailed and systematic analytical treatment of scattering by an arbitrary dipole array configuration with unequal-length dipoles, different inter-element spacing and load impedance. It provides a physical interpretation of the scattering phenomena within the phased array system. The antenna radar cross section (RCS) depends on the field scattered by the antenna towards the receiver. It has two components, viz. structural RCS and antenna mode RCS. The latter component dominates the former, especially if the antenna is mounted on a low observable platform. The reduction in the scattering due to the presence of antennas on the surface is one of the concerns towards stealth technology. In order to achieve this objective, a detailed and accurate analysis of antenna mode scattering is required. In practical phased array, one cannot ignore the finite dimensions of antenna elements, coupling effect and the role of feed network while estimating the antenna RCS. This book presents the RCS estimation of an array with unequal-length dipoles. The signal reflections within the antenna system and the mutual coupling effect are considered to arrive at the total RCS for series and parallel feed. The computations are valid for any arbitrary array configurations, including side-by-side arrangement, parallel-in-echelon, etc.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 64 pp. Englisch.

Taschenbuch. Condizione: Neu. Neuware -This book focuses on performance enhancement of printed antennas using frequency selective surfaces (FSS) technology. The growing demand of stealth technology in strategic areas requires high-performance low-RCS (radar cross section) antennas. Such requirements may be accomplished by incorporating FSS into the antenna structure either in its ground plane or as the superstrate, due to the filter characteristics of FSS structure. In view of this, a novel approach based on FSS technology is presented in this book to enhance the performance of printed antennas including out-of-band structural RCS reduction. In this endeavor, the EM design of microstrip patch antennas (MPA) loaded with FSS-based (i) high impedance surface (HIS) ground plane, and (ii) the superstrates are discussed in detail. The EM analysis of proposed FSS-based antenna structures have been carried out using transmission line analogy, in combination with the reciprocity theorem. Further, various types of novel FSS structures are considered in designing the HIS ground plane and superstrate for enhancing the MPA bandwidth and directivity. The EM design and performance analyses of FSS-based antennas are explained here with the appropriate expressions and illustrations.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 72 pp. Englisch.

Buch. Condizione: Neu. Neuware -This book describes a comprehensive framework of novel simulation approaches, conventional urban models, and related data mining techniques that will help develop planning support systems in Beijing as well as other mega-metropolitan areas. It investigates the relationships between human behaviors and spatial patterns in order to simulate activities in an urban space, visualize planning alternatives, and support decision making.The book first explains urban space using geometric patterns, such as points, networks, and polygons, that help identify patterns of household and individual human behavior. Next, it details how novel simulation methodologies, such as cellular automaton and multi-agent systems, and conventional urban modeling, such as spatial interaction models, can be used to identify an optimal or a simulated solution for a better urban form.The book develops a comprehensive land use and transportation integrated model used to explore the spatial patterns ofmutual interaction between human mobility and urban space. This model can help forecast the distribution of different types of households, rent prices, and land prices, as well as the distribution of routes and traffic volume based on an appraisal of labor demand and supply.This book shows how geospatial analysis can be a useful tool for planners and decision makers to help in ascertaining patterns of activities and support urban planning. Offering both novel and conventional approaches to urban modeling, it will appeal to researchers, students, and policy makers looking for the optimal way to plan the development of a mega-metropolitan area.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 300 pp. Englisch.

Buch. Condizione: Neu. Neuware -This book presents an analysis of the main traits of the Turkish political culture and articulates some of the most important deeply embedded social qualifications of political life in Turkey. It reveals that when water management is historically and socially shaped by heavily technical knowledge systems of engineering it becomes a particularly useful tool for various political interests. The book analyses how Turkish freshwater management is socially constructed as both an engineering discourse and a paternalistic bureaucratic transaction. Such a construction stands in stark contrast to the water management discourse of the European Water Framework Directive (WFD), the European Union s common water policy. Of all the issues faced in Turkish water management, none are as important and problematic as the issue of complying with European Union (EU) accession criteria. Not only is water socially, economically and environmentally important; its water management is a useful prism through which the EU accession process can be viewed as a whole. It showcases the complementarities and divergences between Turkish and EU bureaucratic constructs and value systems.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 196 pp. Englisch.

Taschenbuch. Condizione: Neu. Neuware -In this book, the RCS of a parallel-fed linear and planar dipole array is derived using an approximate method. The signal propagation within the phased array system determines the radar cross section (RCS) of phased array. The reflection and transmission coefficients for a signal at different levels of the phased-in scattering array system depend on the impedance mismatch and the design parameters. Moreover the mutual coupling effect in between the antenna elements is an important factor. A phased array system comprises of radiating elements followed by phase shifters, couplers, and terminating load impedance. These components lead to respective impedances towards the incoming signal that travels through them before reaching receive port of the array system. In this book, the RCS is approximated in terms of array factor, neglecting the phase terms. The mutual coupling effect is taken into account. The dependence of the RCS pattern on the design parameters is analyzed. The approximate model is established as an efficient method for RCS estimation of phased arrays. This book presents a detailed formulation of approximate method to determine RCS of phased arrays, which is explained using schematics and illustrations. This book should help the reader understand the impinging signal path and its reflections/transmissions within the phased array system.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 68 pp. Englisch.