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Author: Publisher: ISBN: Category : Languages : en Pages : 9
Book Description
A system based on the time-varying intensity (TVI) approach was built in the early 1970's at the Scripps Visibility Laboratory and experimental data collected by this prototype system showed an imaging capability of between 15 and 20 attenuation lengths at 640 nm. Researchers at the Naval Air Systems Command have developed an updated version of this original system with state-of-the-art components. This new TVI system uses a modulated laser illuminator to convey information about the scan to the distant receiver instead of using a separate optical trigger as was used in the original system. Laboratory water tank experiments were conducted with a prototype modulated TVI system to evaluate the effect of system and environmental variables on the system performance. In parallel with the experiments, an interactive computer simulation was developed to help evaluate the effect of the many variables on the TVI performance. Results from experiments and simulations will be discussed and compared.
Author: Publisher: ISBN: Category : Languages : en Pages : 9
Book Description
A system based on the time-varying intensity (TVI) approach was built in the early 1970's at the Scripps Visibility Laboratory and experimental data collected by this prototype system showed an imaging capability of between 15 and 20 attenuation lengths at 640 nm. Researchers at the Naval Air Systems Command have developed an updated version of this original system with state-of-the-art components. This new TVI system uses a modulated laser illuminator to convey information about the scan to the distant receiver instead of using a separate optical trigger as was used in the original system. Laboratory water tank experiments were conducted with a prototype modulated TVI system to evaluate the effect of system and environmental variables on the system performance. In parallel with the experiments, an interactive computer simulation was developed to help evaluate the effect of the many variables on the TVI performance. Results from experiments and simulations will be discussed and compared.
Author: John Watson Publisher: Elsevier ISBN: 0857093525 Category : Technology & Engineering Languages : en Pages : 615
Book Description
The use of optical methodology, instrumentation and photonics devices for imaging, vision and optical sensing is of increasing importance in understanding our marine environment. Subsea optics can make an important contribution to the protection and sustainable management of ocean resources and contribute to monitoring the response of marine systems to climate change. This important book provides an authoritative review of key principles, technologies and their applications. The book is divided into three parts. The first part provides a general introduction to the key concepts in subsea optics and imaging, imaging technologies and the development of ocean optics and colour analysis. Part two reviews the use of subsea optics in environmental analysis. An introduction to the concepts of underwater light fields is followed by an overview of coloured dissolved organic matter (CDOM) and an assessment of nutrients in the water column. This section concludes with discussions of the properties of subsea bioluminescence, harmful algal blooms and their impact and finally an outline of optical techniques for studying suspended sediments, turbulence and mixing in the marine environment. Part three reviews subsea optical systems technologies. A general overview of imaging and visualisation using conventional photography and video leads onto advanced techniques like digital holography, laser line-scanning and range-gated imaging as well as their use in controlled observation platforms or global observation networks. This section also outlines techniques like Raman spectroscopy, hyperspectral sensing and imaging, laser Doppler anemometry (LDA) and particle image velocimetry (PIV), optical fibre sensing and LIDAR systems. Finally, a chapter on fluorescence methodologies brings the volume to a close. With its distinguished editor and international team of contributors, Subsea optics and imaging is a standard reference for those researching, developing and using subsea optical technologies as well as environmental scientists and agencies concerned with monitoring the marine environment. Provides an authoritative review of key principles, technologies and their applications Outlines the key concepts in subsea optics and imaging, imaging technologies and the development of ocean optics and colour analysis Reviews the properties of subsea bioluminescence, harmful algal blooms and their impact
Author: Eugenio Picano Publisher: Springer Nature ISBN: 3031310624 Category : Medical Languages : en Pages : 674
Book Description
This is the seventh edition of a long-selling book (first edition 1991) that was translated into Italian, French, Chinese, Portuguese, Spanish, English. In the last ten years, stress echocardiography has exploded in its breadth and variety of applications. From a one-fits-all approach (wall motion by 2D-echo in the patient with known or suspected coronary artery disease), the field has progressed to an omnivorous, next-generation laboratory employing a variety of technologies (from M-Mode to 2D, from pulsed, continuous, color and tissue Doppler to lung ultrasound) on patients covering the entire spectrum of severity (from elite athletes to patients with end-stage heart failure) and ages (from children with congenital heart disease to the elderly with aortic stenosis). This new edition is enriched with over 300 figures, 150 tables and video-clips. In a societal and economic climate of increasing pressure for appropriate, justified and optimized imaging, stress echocardiography offers the great advantages of being radiation-free, relatively low cost, with minimal environmental impact, and with a staggering versatility: we can get more (information) with less (cost and risk). The volume will be a tremendous aid to current best practices for all health operators who intend to use stress echocardiography and ultrasound for diagnosis and guidance of optimal management in their patients.
Author: Asian Development Bank Publisher: Asian Development Bank ISBN: 929092604X Category : Political Science Languages : en Pages : 102
Book Description
The Asian Development Bank (ADB) works with a number of developing member countries facing fragile and conflict-affected situations---circumstances that complicate economic development, and might include domestic or international conflict, ethnic tensions, vulnerability to natural disasters, or a confluence of these factors. ADB piloted the peacebuilding tool in Nepal as a conflict-sensitive approach, a key to effective and safe implementation of projects in the country's post-conflict context. The peacebuilding tool is an analytical tool for assisting project team leaders and social experts in understanding the local context, and in identifying potential risks to implementation of development projects that are linked to social conflicts, as well as in formulating mitigation measures for addressing these risks.
Author: Charles W. Finkl Publisher: Springer ISBN: 331906326X Category : Science Languages : en Pages : 514
Book Description
This book is geared for advanced level research in the general subject area of remote sensing and modeling as they apply to the coastal marine environment. The various chapters focus on the latest scientific and technical advances in the service of better understanding coastal marine environments for their care, conservation and management. Chapters specifically deal with advances in remote sensing coastal classifications, environmental monitoring, digital ocean technological advances, geophysical methods, geoacoustics, X-band radar, risk assessment models, GIS applications, real-time modeling systems, and spatial modeling. Readers will find this book useful because it summarizes applications of new research methods in one of the world’s most dynamic and complicated environments. Chapters in this book will be of interest to specialists in the coastal marine environment who deals with aspects of environmental monitoring and assessment via remote sensing techniques and numerical modeling.
Author: Pierre C. Wong Publisher: Springer Science & Business Media ISBN: 1848000642 Category : Medical Languages : en Pages : 578
Book Description
Transesophageal Echocardiography for Congenital Heart Disease represents a unique contribution as the only contemporary reference to focus exclusively on the clinical applications of transesophageal echocardiography (TEE) in congenital heart disease (CHD). Written by numerous prominent specialists and renowned leaders in the field, it presents a comprehensive, modern, and integrated review of the subject in light of the cumulative experience and most recent advances in the technology. Topics related to CHD include: (1) physics and instrumentation of TEE, particularly as they apply to the structural evaluation; (2) specialized aspects of the examination, with emphases on technical considerations pertinent to both pediatric and adult patients with congenital cardiovascular pathology; (3) segmental approach to diagnosis and functional assessment; (4) extensive discussion of the TEE evaluation of the many anomalies encompassing the CHD spectrum; (5) use of the imaging modality in the perioperative and interventional settings; and (6) important aspects of 3D TEE evaluation. Richly illustrated by more than 700 figures/illustrations and 400 videos, this textbook will serve as an indispensable resource for all who use TEE in the care of both children and adults with CHD, from the novice to the expert.
Author: Douglas F. Elliott Publisher: Elsevier ISBN: 0080918069 Category : Mathematics Languages : en Pages : 511
Book Description
This book has grown from notes used by the authors to instruct fast transform classes. One class was sponsored by the Training Department of Rockwell International, and another was sponsored by the Department of Electrical Engineering of The University of Texas at Arlington. Some of the material was also used in a short course sponsored by the University of Southern California. The authors are indebted to their students for motivating the writing of this book and for suggestions to improve it.
Author: Alireza Khaligh Publisher: CRC Press ISBN: 1351834029 Category : Science Languages : en Pages : 529
Book Description
Also called energy scavenging, energy harvesting captures, stores, and uses "clean" energy sources by employing interfaces, storage devices, and other units. Unlike conventional electric power generation systems, renewable energy harvesting does not use fossil fuels and the generation units can be decentralized, thereby significantly reducing transmission and distribution losses. But advanced technical methods must be developed to increase the efficiency of devices in harvesting energy from environmentally friendly, "green" resources and converting them into electrical energy. Recognizing this need, Energy Harvesting: Solar, Wind, and Ocean Energy Conversion Systems describes various energy harvesting technologies, different topologies, and many types of power electronic interfaces for stand-alone utilization or grid connection of energy harvesting applications. Along with providing all the necessary concepts and theoretical background, the authors develop simulation models throughout the text to build a practical understanding of system analysis and modeling. With a focus on solar energy, the first chapter discusses the I−V characteristics of photovoltaic (PV) systems, PV models and equivalent circuits, sun tracking systems, maximum power point tracking systems, shading effects, and power electronic interfaces for grid-connected and stand-alone PV systems. It also presents sizing criteria for applications and modern solar energy applications, including residential, vehicular, naval, and space applications. The next chapter reviews different types of wind turbines and electrical machines as well as various power electronic interfaces. After explaining the energy generation technologies, optimal operation principles, and possible utilization techniques of ocean tidal energy harvesting, the book explores near- and offshore approaches for harvesting the kinetic and potential energy of ocean waves. It also describes the required absorber, turbine, and generator types, along with the power electronic interfaces for grid connection and commercialized ocean wave energy conversion applications. The final chapter deals with closed, open, and hybrid-cycle ocean thermal energy conversion systems.
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Author: John Watson
Author: Eugenio Picano
Author: Asian Development Bank
Author: Charles W. Finkl
Author: Pierre C. Wong
Author: K.S. Shifrin
Author: Douglas F. Elliott
Author: UNESCO
Author: Alireza Khaligh