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 Free Download Semiconductor Power Electronics by Richard G. Hoft English | PDF | 1985 | 333 Pages | ISBN : 9401170177 | 29.7 MB Semiconductors have been used widely in signal-level or "brain" applications. Since their invention in 1948, transistors have revolutionized the electronics industry in computers, information processing, and communications. Now, however, semiconductors are being used more and more where consid erable "brawn" is required. Devices such as high-power bipolar junction tran sistors and power field-effect transistors, as well as SCRs, TRlACs, GTOs, and other semiconductor switching devices that use a p-n-p-n regenerative effect to achieve bistable action, are expanding the power-handling horizons of semicon ductors and finding increasing application in a wide range of products including regulated power supplies, lamp dimmers, motor drives, pulse modulators, and heat controls. HVDC and electric-vehicle propulsion are two additional areas of application which may have a very significant long range impact on the tech nology. The impact of solid-state devices capable of handling appreciable power levels has yet to be fully realized. Since it first became available in late 1957, the SCR or silicon-controlled rec tifier (also called the reverse blocking triode thyristor) has become the most popular member of the thyristor family. At present, SCRs are available from a large number of manufacturers in this country and abroad. SCR ratings range from less than one ampere to over three thousand amperes with voltage ratings in excess of three thousand volts.  Free Download Semiconductor Devices for Power Conditioning by Roland Sittig, P. Roggwiller English | PDF | 1982 | 373 Pages | ISBN : 1468472658 | 22.9 MB The Brown Boveri Symposia are by now part of firmly established tradition. This is the seventh event in a series which was initiated shortly afer Corporate Research was established as a separate entity within our Company; the Symposia are held every other year. The themes to date have been 1969 Flow Research on Blading 1971 Real-Time Control of Electric Power Systems 1973 High-Temperature Materials in Gas Turbines 1975 Nonemissive Electrooptic Displays 1977 Current Interruption in High-Voltage Networks 1979 Surges in High-Voltage Networks 1981 Semiconductor Devices for Power Conditioning Why have we chosen these titles? At the outset we established certain selection criteria; we felt that a subject for a Symposium should fulfill the following require ments: It should characterize a part of a thoroughly scientific discipline; in other words, it should describe an area of scholarly study and research. It should be of current interest in the sense that important results have recently been obtained and considerable research effort is underway in the international scientific community. It should bear some relation to the scientific and technological acitivity of our Company. Let us look at the requirement "current interest": Some of the topics on the list have been the subject of research for several decades, some even from the beginning of the century. One might wonder, then, why such fields could be regarded as particularly timely in the 1960s and 1970s. A few remarks on this subject therefore are in order.  Free Download Semantic Web: Implications for Technologies and Business Practices by Michael Workman English | PDF (True) | 2016 | 234 Pages | ISBN : 3319166573 | 6.3 MB This book examines recent developments in semantic systems that can respond to situations and environments and events. The contributors to this book cover how to design, implement and utilize disruptive technologies. The editor discusses the two fundamental sets of disruptive technologies: the development of semantic technologies including description logics, ontologies and agent frameworks; and the development of semantic information rendering and graphical forms of displays of high-density time-sensitive data to improve situational awareness. Beyond practical illustrations of emerging technologies, the editor proposes to utilize an incremental development method called knowledge scaffolding -a proven educational psychology technique for learning a subject matter thoroughly. The goal of this book is to help readers learn about managing information resources, from the ground up and reinforcing the learning as they read on.  Free Download Thomas S. Weinberg, "Selves, Symbols, and Sexualities: An Interactionist Anthology" English | ISBN: 145227665X | 2014 | 344 pages | EPUB | 679 KB Offering an anthology of original articles on sexuality from a sociological perspective, Selves, Symbols, and Sexualities: An Interactionist Anthology focuses on the diverse and multi-layered meanings of sexuality, sexual behaviors and sexual identities. Thomas S. Weinberg and Staci Newmahr bring you essays that explore sexuality as a social process. As a whole, the book takes the perspective that what each of us understands to be sexual is constructed through everyday social processes and interaction, situated in particular spaces and moments, identified through our social-sexual presentations, and symbolized through language, objects and practices. The book is organized around these four distinct but interrelated processes, and augmented by personal narratives around relevant issues. The authors' goals for the book are to engage students in the sociological enterprise by providing interesting and insightful entries that emphasize the importance of meaning-making in human sexuality, and to provide them with conceptual tools to understand human sexuality in a complex and quickly changing sexual landscape.  Free Download Carter H. Hay, "Self-Control and Crime Over the Life Course" English | ISBN: 1483358992 | 2015 | 312 pages | EPUB | 1209 KB What exactly is self-control, and what life outcomes does it affect? What causes a person to have high or low self-control to begin with? What effect does self-control have on crime and other harmful behavior?  Free Download Selected Studies in Geotechnics, Geo-informatics and Remote Sensing: Proceedings of the 3rd Conference of the Arabian Journal of Geosciences (CAJG-3) by Zeynal Abiddin Ergüler, Riheb Hadji, Helder I. Chaminé, Jesús Rodrigo-Comino, Amjad Kallel, Broder Merkel, Mehdi Eshagh, Haroun Chenchouni, Stefan Grab, Murat Karakus, Sami Khomsi, Jasper Knight, Mourad Bezzeghoud, Maurizio Barbieri, Sandeep Panda, Ali Cemal Benim, Hesham El-Askary English | PDF EPUB (True) | 2023 | 238 Pages | ISBN : 3031437586 | 138 MB This book contains the best papers accepted for presentation at the 3rd Springer Conference of the Arabian Journal of Geosciences (CAJG-3). The book is divided into three parts to distinguish research studies from the fields of (1) geological and geotechnical engineering, (2) geomechanical studies based on numerical and analytical methods, and (3) geo-informatics and remote sensing. The content of these papers provides new scientific knowledge for further understanding on landslides, new stabilization techniques, importance of geophysics for engineering geology investigations as well as new empirical approaches for easily predicting some physical and hydrogeomechanical properties of geomaterials. It also sheds the light on usage of different remote sensing technologies, mapping techniques in a geographic information systems environment along with some advanced signal processing, and deep learning approaches. The book is of interest to all researchers, practitioners, and students in the fields of geological and mining engineering, geotechnical engineering, hydrogeomechanics, engineering geology, geotechnologies, groundwater and natural hazards, and analyses of some emerging earth processes and environmental variabilities.  Free Download Selected Papers from ICIR EUROINVENT - 2023: International Conference on Innovative Research by Andrei Victor Sandu, Petrica Vizureanu, Mohd Mustafa Al Bakri Abdullah, Marcin Nabialek, Che Mohd Ruzaidi Ghazali, Ion Sandu English | PDF (True) | 2023 | 225 Pages | ISBN : 3031459636 | 27.9 MB This book is a collection of research papers presented at the International Conference on Innovative Research, a part of EUROINVENT 2023, held under the patronage of Romanian Ministry of Research Innovation and Digitization. The book features contributions from leading researchers, engineers, and students who have presented their insights and experiences on a wide range of topics in the field of Materials Science and Engineering. The papers cover advancements, innovations, and future directions in the field, and are grouped into sections based on the themes discussed at the conference. The book is a valuable resource for researchers, students, and professionals interested in the latest developments in materials science and engineering.  Free Download Seismic Digital Shift: Rethinking Our Digital Future by Yong Hu English | PDF EPUB (True) | 2023 | 345 Pages | ISBN : 9819959527 | 3.5 MB This book is an in-depth study on the past, present and future of digitalization, an important contribution to the literature on the development of the digital economy in China. The technological revolution in telecommunications has brought a "seismic shift" - the periphery has moved to the center, accelerating the emergence of a new digital world. The adoption and integration of advanced digital technologies such as 5G mobile networks, the Internet of things (IoT), cloud computing, artificial intelligence, big data analysis and robotics means that the traditional economy, with its organizational, productive and governance systems, is merging with the digital economy, with its innovative features in terms of business models, production, business organization and governance. This makes the digital transformation process highly dynamic and complex, thus challenging many aspects of economies and societies. The author discusses not only what digital transformation means for businesses, but also its impact on society at large, inspiring readers to understand China and the world and think about what digital future we would like to have.  Free Download Kennedy Agade Mkutu, "Security Governance in East Africa: Pictures of Policing from the Ground" English | ISBN: 1498553656 | 2017 | 252 pages | EPUB | 2 MB This collection of cases from East Africa, contributed largely by locally-based authors, explores the increasing security governance phenomenon in the region: that is, the mix of state and non-state actors, including private entities, volunteer auxiliaries, homegrown vigilantes and gangs, and the relationship between police and communities. Local dynamics brought by globalization, liberalization, the new scramble for resource wealth, inequality, and international terrorism are observed in detail, superimposed upon the well-known development challenges, ethnopolitical divides, and patterns of government and security provision which continue to reflect their colonial past. This book raises both practical and theoretical ethical dilemmas of the increasing fragmentation of security functions within Uganda, Kenya, South Sudan, mainland Tanzania, and Zanzibar. It is a vital contribution to the "non-state," "plural policing" debates and is of both local and global relevance.  Free Download Securing Unmanned Aerial Vehicle Networks: Models and Algorithms by Bin Duo , Xiaojun Yuan , Yifan Liu English | PDF EPUB (True) | 2023 (2024 Edition) | 130 Pages | ISBN : 3031456041 | 21.9 MB This book focuses on the model and algorithm aspects of securing Unmanned Aerial Vehicle Networks (UAV). To equip readers with the essential knowledge required for conducting research in this field, it covers the foundational concepts of this topic as well. This book also offers a detailed insight into UAV networks from the physical layer security point of view. |
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