Описание: Fiber-optic communication systems have advanced dramatically over the last four decades, since the era of copper cables, resulting in low-cost and high-bandwidth transmission. Fiber optics is now the backbone of the internet and long-distance telecommunication.
Автор: Joshua Adam Taylor Название: Convex Optimization of Power Systems ISBN: 1107076870 ISBN-13(EAN): 9781107076877 Издательство: Cambridge Academ Рейтинг: Цена: 12038.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: This mathematically rigorous guide to convex optimization for power systems engineering includes convex models for a variety of real-world applications, and a selection of problems and practical examples. An invaluable resource for students and researchers from industry and academia in power systems, optimization, and control.
Название: New approaches to the study of linguistic variability ISBN: 3631615043 ISBN-13(EAN): 9783631615041 Издательство: Peter Lang Рейтинг: Цена: 10415.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: The fourth volume in the series Language Competence and Language Awareness in Europe features contributions from various philologies in the young but rapidly growing research area of linguistic variability. It focuses on sociolinguistic studies of language use as social practice and variability of authentic language use.
Описание: Design of Digital Phase Shifters for Multipurpose Communication Systems covers a new emerging need in designing digital phase shifters for modern communication systems. With the advancement of new generation mobile communication systems, directed beams save a substantial amount of RF-power, and improve the noise immunity. In this regard, beam-forming circuits, namely, digital phase shifters constitute essential parts of the antenna arrays. Therefore, this book is devoted to design of digital phase shifters for various communications systems. In the good old days, phase shifter design requirements used to demand narrow bandwidth with no physical size constraints. Nowadays, they must be compact and suitable for Very Large Scale Integrated Circuits (VLSI) or Microwave Monolithic Integrated Circuit (MMIC) implementation with Wide Phase Range (WPR) and Wide Frequency Band (WFB). Since the 1980s, the author has been designing digital phase shifters for various applications. He started to work with loaded lines phase shifters, and then employed branch line couplers to achieve wider frequency bands. In order to reduce the physical size, he used a 3 element Symmetric LC ladder based T or PI configurations. In order to achieve broad frequency band with large phase range, usage of LC lattice structures is inevitable. Lately, the author designed phase shifters using both lowpass and highpass LC ladder and lattice based switched-structures, which are suitable for monolithic implementation. In the course of design, MOS transistors were employed as switching elements. This book includes several novel digital phase shifter topologies, which provides wide phase range and wideband operation. Technical topics discussed in the book include:
Basic Concept of Antenna Arrays
Concept of Digital Phase Bit
Scattering Parameters to analyze the electric performance of phase shifters
Transmission Lines as circuit elements to construct practical phase shifters
Loaded Line Digital Phase Shifters (DPS)
Lowpass Based T/PI Section DPS
Highpass Based T/PI Section DPS
3-Element LC T/PI Section DPS
Wide Phase Range, Wide Frequency Band Symmetric Lattice Based DPS
For each topology presented, explicit design equations are provided and programs to assess the electric performance of each topology is developed in a MatLab environment. It is expected that the reader will be self-sufficient to design and implement the digital phase shifters topologies presented in this book.
Автор: Ling Название: Synchronization in Digital Communication Systems ISBN: 110711473X ISBN-13(EAN): 9781107114739 Издательство: Cambridge Academ Рейтинг: Цена: 15523.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Gain the skills needed to develop and implement synchronization functions in digital communication systems with this practical guide. Based on the author`s extensive industrial design experience, and including detailed implementation examples, it provides an excellent toolkit for practicing engineers and graduate students in digital communications.
Автор: Eugene Green, Charles F. Meyer Название: The Variability of Current World Englishes ISBN: 3110339676 ISBN-13(EAN): 9783110339673 Издательство: Walter de Gruyter Рейтинг: Цена: 18586.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Faces of English explores the phenomenon of increasing dialects, varieties, and creoles, even as the spread of globalization supports an apparently growing uniformity among nations. The book's chapters supply descriptions of Jamaican English in Toronto, English as an L2 in a South African mining township, Chinese and English contact in Singapore, unexpected, emergent variants in Canadian English, and innovations in the English of West Virginia. Further, the book offers some perspective on internet English as well as on abiding uniformities in the lexicon and grammar of standard varieties. In the analyses of this heterogeneous growth such considerations as speakers' sociolinguistic profiles, phonological, morpho-syntactic, and lexical variables, frequencies, and typological patterns provide ample insight in the current status of English both in oral and electronic communities. The opening chapter presents a theoretical framework that argues for linguistic typology as conceptually resourceful in accommodating techniques of analysis and in distinguishing the wide arrays of English found throughout the globe. One clear function for Faces of English is that of a catalyst: to spur studies of diversities in English (and in other languages), to suggest approaches to adapt, to invite counterargument and developments in analysis.
Автор: Brion van Over, Ute Winter, Elizabeth Molina-Markham, Sunny Lie, Donal Carbaugh Название: Communication in Vehicles: Cultural Variability in Speech Systems ISBN: 3110518910 ISBN-13(EAN): 9783110518917 Издательство: Walter de Gruyter Цена: 9288.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание:
New technology in vehicles is transforming the way people move around as well as what they do in their vehicles. How does one communicate with an in-car speech system and how does this vary by language or cultural community? This book explores this process by focusing on the communication practices that people engage in when using their in-car systems and when talking about their vehicles with co-passengers. Chapters present a robust theory and methodology for studying communication in cars, how tasks are begun and ended, how people switch between tasks, how non-task talk appears, what ways and styles of communication drivers prefer, and how they expect the system voice to respond, among other things. Particular attention is given to cultural preferences as they are evident in this communication; these preferences are found to ground various trajectories in the use and meaning of in-car communication practices. The book explores these matters with a focus on the United States and Mainland China. Implications are drawn for the design and utilization of in-car communication systems.
Название: Chinese culture in a cross-cultural comparison ISBN: 3631611609 ISBN-13(EAN): 9783631611609 Издательство: Peter Lang Рейтинг: Цена: 20158.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Chinese culture has a very long and extraordinary tradition. With China’s rapid economic growth and a population of more than one billion people, China has become a very important market for many companies. In order to conduct business in a particular country, it is necessary to also understand the culture of that country. After all, culture influences people’s behavior and communication – also in the world of business. That is why an understanding of a country’s culture is crucial when communicating with all relevant stakeholders including its consumers, businesses, employees, and government authorities. This eighth volume of the Freiberger Beitr?ge seeks to provide some essential insights into Chinese culture to help improve transactions and relationships with Chinese stakeholders. The contributing authors help explain the various facets of Chinese culture revolving around communication, business negotiations, and conflict management.
Автор: Andrew Ellis Название: Optical Communication Systems ISBN: 9814800287 ISBN-13(EAN): 9789814800280 Издательство: Taylor&Francis Рейтинг: Цена: 17762.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: This book, featuring contributions by the suppliers of widely deployed simulation software and academic authors, illustrates the origins of the limited performance of an optical fiber from the engineering, physics, and information theoretic viewpoints.
Описание: Through an analysis of Iranian media reports, this book offers a unique perspective on the often difficult relations between Iran and the West.
Описание: Now in a thoroughly updated second edition, Digital Speech covers all aspects of digital speech coding from an introduction to the background, sampling and analysis, quantization methods, and coders through to the recent research in areas such as voice activity detection and speech enhancement.
Описание: Examines the communication between a diagnostic tester and E/E systems of road-vehicles and non-road mobile machinery such as agricultural machines and construction equipment. The book also contains the description of E/E systems, the communication, and remote, cloud-based diagnostics and cybersecurity threats.
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