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The book is the most comprehensive coverage of piezoelectric acoustic transducers and all the related aspects of practical transducer designing for underwater applications in the field. It uses a physics-based energy method for analyzing transducer problems. This gives great physical insight into the understanding of the electromechanical devices. The great benefit of the energy method is that the multidisciplinary subject of electro-mechano-acoustics can be presented in parts and the solutions to the problems (electrical, electro-piezo, mechanical, and radiation) are combined using equivalent electrical circuit network theory. The energy and equivalent electromechanical circuit method at first is illustrated with transducer examples that can be modeled as a single degree of freedom system (such as spheres, short cylinders and flexural beams and plates). Then transducers are modeled as multiple degrees of freedom devices and the results are presented using multi contour electromechanical circuits. Special focus is made on the effects of coupled vibrations on the transducer performance. The Book gives also extensive coverage of acoustic radiation including acoustic interaction between the transducers. It provides practical results that are directly useful for the transducers modeling. While there have been many studies of acoustic radiation of various shapes, non-previous presented the results in terms of such practical utility.
Technology & Engineering / Acoustics & Sound --- Technology & Engineering / Signals & Signal Processing --- Technology --- Applied science --- Arts, Useful --- Science, Applied --- Useful arts --- Science --- Industrial arts --- Material culture --- Acoustic Transduction. --- electroacoustics. --- electromechanical circuits. --- piezoelectric transducers. --- underwater sound.
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The speed of technological change is demonstrated not least by the new military technologies that are in use or are currently being developed. For example, the use of remote-controlled and semi-autonomous weapons systems has long been standard in the armed forces, and advances in artificial intelligence mean that more "decision-making " can be expected to be transferred to the machines used by the military. But not everything that is technologically possible is ethically justifiable. This volume, which brings together contributions to an annual conference of the European Chapter of the International Society for Military Ethics, attempts to address the ethical and legal problems posed by emerging military technologies. In a number of exciting essays, internationally renowned researchers present their insights.
Security, International --- Technology --- War --- Economics of war --- Competition, International --- War, Cost of --- Applied science --- Arts, Useful --- Science, Applied --- Useful arts --- Science --- Industrial arts --- Material culture --- Collective security --- International security --- International relations --- Disarmament --- International organization --- Peace --- Military aspects --- Economic aspects
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The water sector is in the middle of a paradigm shift from focusing on treatment and meeting discharge permit limits to integrated operation that also enables a circular water economy via water reuse, resource recovery, and system level planning and operation. While the sector has gone through different stages of such revolution, from improving energy efficiency to recovering renewable energy and resources, when it comes to the next step of achieving carbon neutrality or negative emission, it falls behind other infrastructure sectors such as energy and transportation. The water sector carries tremendous potential to decarbonize, from technological advancements, to operational optimization, to policy and behavioural changes. This book aims to fill an important gap for different stakeholders to gain knowledge and skills in this area and equip the water community to further decarbonize the industry and build a carbon-free society and economy. The book goes beyond technology overviews, rather it aims to provide a system level blueprint for decarbonization. It can be a reference book and textbook for graduate students, researchers, practitioners, consultants and policy makers, and it will provide practical guidance for stakeholders to analyse and implement decarbonization measures in their professions.
Technology & Engineering / Environmental / Water Supply --- Technology --- Applied science --- Arts, Useful --- Science, Applied --- Useful arts --- Science --- Industrial arts --- Material culture --- Water use. --- Use of water --- Utilization of water --- Water --- Water utilization --- Water-supply --- Utilization --- Wastewater, reuse & sludge, Water resources, environment, Water supply & treatment
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