Summary Technical Report Of Division 6 Sub Surface Warfare Nrdc Basic Methods For The Calibration Of Sonar Equipment
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United States. Office of Scientific Research and Development. National Defense Research Committee
Author : United States. Office of Scientific Research and Development. National Defense Research Committee Publisher : Unknown Page : 200 pages File Size : 44,7 Mb Release : 1946 Category : Electro-acoustics ISBN : UVA:X000673391
Summary Technical Report of Division 6 [sub-surface Warfare] NRDC: Basic methods for the calibration of sonar equipment by United States. Office of Scientific Research and Development. National Defense Research Committee Pdf
Ocean Reverberation by Dale D. Ellis,John R. Preston,H.G. Urban Pdf
During the past decade there has been a renewed interest in active sonar systems at both low and medium frequencies. More recently this interest has been extended to very high frequencies in shallow water. Reverberation often limits the detection performance of these systems, and there is a need to understand the underlying mechanisms that cause the scattering. With more emphasis being given to reverberation phenomena in the Scientific Program of Work at the SACLANT Undersea Research Centre, it was considered an opportune time to host a meeting, bringing together scientists from NATO countries to foster cross-disciplinary dialogue and generate ideas for new research directions. Consequently the Ocean Reverberation Symposium was held 25-29 May 1992 in La Spezia, Italy. Over 60 presentations were made on a diverse selection of topics, of which ten papers will be published as a SACLANTCEN Conference Proceedings. The papers in this volume are grouped into 8 sections, usually in the same order as presented at the corresponding session of the Symposium: Section 1 - Scattering Mechanisms Section 2 - High Frequency Measurements and Mechanisms Section 3 - Reverberation Modelling Section 4 - ARSRP Mid-Atlantic Ridge Experiment Section 5 - Low Frequency Measurements Section 6 - Volume Scattering Section 7 - Signal Processing Issues Section 8 - Applications Taken together the papers show some emerging trends in the research.
Acronym agglomeration is an affliction of the age, and there are acronym addicts who, in their weakness, find it impossible to resist them. More than once in recent months my peers have cautioned me about my apparent readiness to use not only acronyms, but abbreviations, foreign isms, codes, and other cryptic symbols rather than common, ordinary American words. Many among us, though, either have not received or have chosen to ignore such advice. As a consequence, what we write and speak is full of mystery and confusion. It is then for the reader and listener and for the writer and speaker that Reta C. Moser has compiled this guide. Its effective application to the art of communication is urged. Such use should help avoid many of the misunderstandings involving terminology which occur daily. Although such misunderstandings are certainly crucial in humanistic and social situations, they are often of immediate import and the trigger to disaster in scientific, technical, and political situations. Some 15,000 acronyms and 25,000 definitions are provided (a 50- and 47 -percent increase over the 1964 edition!), with due credit to Miss Moser's diligence in making the compilation and with the acknowledgment that the acronymical phenomenon is very much with us. This edition, like the first, is certain to be of value to writers, librarians, editors, and others who must identify and deal with acronyms.
This book addresses the rapidly developing class of solar cell materials and designed to provide much needed information on the fundamental principles of these materials, together with how these are employed in photovoltaic applications. A special emphasize have been given for the space applications through study of radiation tolerant solar cells. This book present a comprehensive research outlining progress on the synthesis, fabrication and application of solar cells from fundamental to device technology and is helpful for graduate students, researchers, and technologists engaged in research and development of materials.
Electronic Inventions and Discoveries by G. W. A. Dummer Pdf
Electronic Inventions and Discoveries: Electronics from Its Earliest Beginnings to the Present Day provides a summary of the development of the whole field of electronics. Organized into 13 chapters, the book covers and reviews the history of electronics as a whole and its aspects. The opening chapter covers the beginnings of electronics, while the next chapter discusses the development of components, transistors, and integrated circuits. The third chapter tackles the expansion of electronics and its effects on industry. The succeeding chapters discuss the history of the aspects of electronics, such as audio and sound reproduction, radio and telecommunications, radar, television, computers, robotics, information technology, and industrial and other applications. Chapter 10 provides a lists of electronic inventions according to subject, while Chapter 11 provides a concise description of each invention by date order. Chapter 12 enumerates the inventors of electronic devices. The last chapter provides a list of books about inventions and inventors. This book will appeal to readers who are curious about the development of electronics throughout history.
The Military Balance 2021 by The International Institute for Strategic Studies (IISS) Pdf
Published each year since 1959, The Military Balance is an indispensable reference to the capabilities of armed forces across the globe. It will be of interest to anyone interested in security and military issues and is regularly consulted by academia, media, armed forces, the private sector and government. Key Elements: 1. Data on the military organisations, equipment inventories and defence budgets of 171 countries 2. Analysis of major developments affecting defence policy and procurement, and defence economics, arranged region-by-region. 3. Key trends in the land, sea and air domains, and in cyberspace 4. Selected defence procurement programmes, arranged region-by-region 5. Full-colour graphics including maps and illustrations 6. Extensive explanatory notes and references 7. The hardcopy edition is accompanied by a full-colour wall chart Features in the 2021 edition include: - Analytical texts on future maritime competition, battle management systems, China’s civil-military integration and fractures in the arms-control environment - Military cyber capabilities - Analysis of developments in defence policy, military capability and defence economics and industry for China, Egypt, Finland, Indonesia, Russia, Senegal and the United States. - A wallchart illustrating global submarine holdings and key trends in subsurface warfare
United States. Office of Scientific Research and Development. National Defense Research Committee. Division 11
Author : United States. Office of Scientific Research and Development. National Defense Research Committee. Division 11 Publisher : Unknown Page : 112 pages File Size : 44,8 Mb Release : 1946 Category : Chemical engineering ISBN : UOM:39015039938348
Sustainable Smart Cities in India by Poonam Sharma,Swati Rajput Pdf
This book presents fundamental and applied research aimed at the development of smart cities across India. Based on the exploration of an extensive array of multidisciplinary literature, this book discusses critical factors of smart city initiatives: management and organization, technology, governance, policy, people and communities, economy, infrastructure, and natural environment. These factors are broadly covered under the integrative framework of the book to examine the vision and challenges of smart city initiatives. The book suggests directions and agendas for smart city research and outlines practical implications for government professionals, students, research scholars and policy makers. A lot of work is happening on smart cities as it is an upcoming area of research and development. At international level, and even in India, the concept of smart cities concept is a hot topic at universities, research centers, ministries, transport departments, civic bodies, environment, energy and disaster organizations, town planners and policy makers. This book provides ideas and information to government officials, investors, experts and research students.
United States. Office of Scientific Research and Development. National Defense Research Committee
Author : United States. Office of Scientific Research and Development. National Defense Research Committee Publisher : Unknown Page : 356 pages File Size : 40,7 Mb Release : 1969 Category : Sonar ISBN : UCSD:31822014468268
Principles and Applications of Underwater Sound by United States. Office of Scientific Research and Development. National Defense Research Committee Pdf
