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Author: Cecil Gray Publisher: Nelson Thornes ISBN: 9780175663187 Category : Juvenile Nonfiction Languages : en Pages : 164
Book Description
Wavelengths is a collection of 20 superb stories by Caribbean writers, chosen to meet the needs of students in all types of Secondary school in the Caribbean. It provides a one year course for first or second year pupils.
Author: Cecil Gray Publisher: Nelson Thornes ISBN: 9780175663187 Category : Juvenile Nonfiction Languages : en Pages : 164
Book Description
Wavelengths is a collection of 20 superb stories by Caribbean writers, chosen to meet the needs of students in all types of Secondary school in the Caribbean. It provides a one year course for first or second year pupils.
Author: Jo Reger Publisher: Routledge ISBN: 1317721489 Category : Social Science Languages : en Pages : 306
Book Description
The original essays in this collection ground the shifting terrain of feminism in the 21st century. The contributors define and examine the complexity of the Third Wave by answering questions like: how appropriate is a "third wave" label for contemporary feminism; are the agendas of contemporary feminism and the "second wave" really all that different; does the wave metaphor accurately describe the difference between contemporary feminists and their predecessors; how do women of color fit into this notion of contemporary feminism; and what are the future directions of the feminist movement?
Author: Klaus Grobe Publisher: John Wiley & Sons ISBN: 1118755154 Category : Science Languages : en Pages : 326
Book Description
In this book, Optical Wavelength Division Multiplexing (WDM) is approached from a strictly practical and application-oriented point of view. Based on the characteristics and constraints of modern fiber-optic components, transport systems and fibers, the text provides relevant rules of thumb and practical hints for technology selection, WDM system and link dimensioning, and also for network-related aspects such as wavelength assignment and resilience mechanisms. Actual 10/40 Gb/s WDM systems are considered, and a preview of the upcoming 100 Gb/s systems and technologies for even higher bit rates is given as well. Key features: Considers WDM from ULH backbone (big picture view) down to PON access (micro view). Includes all major telecom and datacom applications. Provides the relevant background for state-of-the-art and next-gen systems. Offers practical guidelines for system / link engineering.
Author: George Russell Harrison Publisher: MIT Press ISBN: 9780262080026 Category : Spectrum analysis Languages : en Pages : 486
Book Description
Contains 110,000 wavelength entries from the 1939 edition with corrections or changes indicated by a line through the entry. Read the introduction to the 1969 edition for further explanation. Wavelengths in the range of 10,000-2,000 A are covered.
Author: Marcus Nebeling Publisher: CRC Press ISBN: 1420018698 Category : Technology & Engineering Languages : en Pages : 376
Book Description
Explaining what CWDM is, how it is achieved, and why it should be deployed, Coarse Wavelength Division Multiplexing: Technologies and Applications merges coverage of isolated aspects of Coarse Wavelength Division Multiplexing (CWDM) traditionally found as device-related or specific system topics. Emphasizing cost savings and performance enhancement, the book integrates information on component issues, system architectures, concepts for extensions and upgrades, as well as practical applications into a comprehensive, single-volume resource. Beginning with a summary of the ITU-T standards defining CWDM, the book addresses the three essential component classes, optical fibers, transceivers, and WDM filters, which combine to form the basis for the CWDM transmission link. The following chapters include coverage of different architectures such as hubbed rings and meshed networks, and upgrade paths to overcome limitations of current CWDM systems. The book outlines the feasibility of optically amplified CWDM systems, investigates the challenges present with high-speed CWDM and bidirectional transmission, and finally elucidates the importance of CWDM for a wide range of applications. Each chapter provides sufficient information to be used independently and contains references to relevant papers and articles for further study. The last sections of the book focus on applications and case studies where CWDM plays an ever-increasing role. They include extensive studies on networking, reach extension by amplification, and the latest concepts of transmission capacity upgrades using increased bit-rates or new channel plans. Filled with practical information, the book provides a clear understanding of recent developments in the dynamic field of CWDM.
Author: Herbert Venghaus Publisher: Springer ISBN: 3540317708 Category : Science Languages : en Pages : 472
Book Description
This is the first book dedicated to wavelength filters for fibre optics. It provides a comprehensive account of the principles and applications of such filters, including their technological realizations. It explains the relevant performance parameters, the particular advantages and shortcomings of the various concepts and components, and the preferred applications. There is also in-depth information on the characteristics of commercially available devices.
Author: Admela Jukan Publisher: Springer Science & Business Media ISBN: 3709162475 Category : Computers Languages : en Pages : 255
Book Description
This book focuses on methods for service-differentiated and constraint-based wavelength routing and resource allocation for multi-service WDM networks. A number of unique routing solutions are proposed, and an extensive analysis of dynamically re-configurable multi-service WDM networks impart the major contribution to the current efforts in standardisation and network operation.
Author: J.J.M. Ruigrok Publisher: Elsevier ISBN: 1483292460 Category : Music Languages : en Pages : 593
Book Description
Short-wavelength magnetic recording presents a series of practical solutions to a wide range of problems in the field of magnetic recording. It features many new and original results, all derived from fundamental principles as a result of up-to-date research. A special section is devoted to the playback process, including the calculations of head efficiency and head impedance, derived from new theorems. Features include: A simple and fast method for measuring efficiency; a simple method for the accurate separation of the read and write behaviour of magnetic heads; a new concept - the bandpass head. Other types of head covered include: the metal-in-gap head; the amarphous head; the thin-film head; the magneto-resistive head; and probe-type heads for perpendicular recording. The introduction includes an invaluable historical summary of magnetic recording, and the book also features an extensive subject index, complete author index, and a glossary of symbols. "The scope and mathematical rigour of this book can only be compared with W.K. Westmijze's 1953 landmark "Studies in Magnetic Recording" "The easy writing style (renders) the mathematical treatments readily understandable as physical propositions... A careful study of this book cannot help but provide the reader with the most profound insights into the limits of short-wavelength recording." John C. Mallinson, Center for Magnetic Recording Research, University of California, San Diego, USA.
Author: Cecil Gray
Author: Cecil Gray
Author: Jo Reger
Author: Klaus Grobe
Author: George Russell Harrison
Author: Marcus Nebeling
Author: Carlis Vernon
Author: Herbert Venghaus
Author: Royal Observatory, Greenwich
Author: Admela Jukan
Author: J.J.M. Ruigrok