Bücher von David Chapman

This book is a collection of interwoven historical narratives that present an intriguing and little known account of the Ogasawara (Bonin) archipelago and its inhabitants. The narratives begin in the seventeenth century and weave their way through various events connected to the ambitions, hopes, and machinations of individuals, communities, and nations. At the center of these narratives are the Bonin Islanders, originally an eclectic mix of Pacific Islanders, Americans, British, French, German, Portuguese, Italian, and African settlers that first landed on the islands in 1830. The islands were British sovereign territory from 1827 to 1876, when the Japanese asserted possession of the islands based on a seventeenth century expedition and a myth of a samurai discoverer. As part of gaining sovereign control, the Japanese government made all island inhabitants register as Japanese subjects of the national family register. The islanders were not literate in Japanese and had little experience of Japanese culture and limited knowledge of Japanese society, but by 1881 all were forced or coerced into becoming Japanese subjects. By the 1930s the islands were embroiled in the Pacific War. All inhabitants were evacuated to the Japanese mainland until 1946 when only the descendants of the original settlers were allowed to return. In the postwar period the islands fell under U.S. Navy administration until they were reverted to full Japanese sovereignty in 1968. Many descendants of these original settlers still live on the islands with family names such as Washington, Gonzales, Gilley, Savory, and Webb. This book explores the social and cultural history of these islands and its inhabitants and provides a critical approach to understanding the many complex narratives that make up the Bonin story.

This textbook will provide both undergraduates and practising engineers with an up-to-date and thorough grounding in the concepts of modern digital transmission. The book is not encyclopaedic, rather it selects the key concepts and processes and explains them in a deliberate pedagogic style. These concepts and processes are then illustrated by a number of system descriptions. The book is divided into three parts. The longest, Part II, describes the basic processes of digital transmission, such as matched filter detection, pulse shaping, line coding, channel coding, error detection and correction, etc. Understanding the concepts behind these processes requires a grasp of basic mathematical models, and this is provided in Part I. Finally, to put the processes in context, Part III describes elements of the public switched telephone network. The text is written throughout in a modern, digital context, and is comprehensively illustrated with helpful figures. Although the mathematical models (time- and frequency-domain concepts) have wider relevance, they are developed specifically for modelling digital signals. The processes described are those found in current transmission systems, and the description of the PSTN includes an outline of newly formulated standards for the synchronous digital hierarchy (SDH), SONET and for broadband ISDN (ATM). The book will be of great value to 2nd and 3rd year undergraduates studying telecommunications, as well as to graduate trainees and practising engineers. It is appropriate for either private study or as a text associated with a taught telecommunications course. The many worked examples and exercises with solutions will be particularly helpful.