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This reference text will benefit readers in enhancing their understanding of the recent technologies, protocols, and challenges in various stages of development of wireless communication and networking. The text discusses the cellular concepts of 4G, 5G, and 6G along with their challenges. It covers topics related to vehicular technology, wherein vehicles communicate with the traffic and the environment around them using short-range wireless signals. The text comprehensively covers important topics including use of the Internet of Things (IoT) in wireless communication, architecture, and protocols. It further covers the role of smart antennas in emerging wireless technologies. The book Discu...
1944, Kohima — a small, sleepy town in northeast India. Subhash Chandra Bose and his Indian National Army (INA) along with the Japanese, are on the brink of bringing the Empire to its knees and forcing the British out of India. But, inexplicably, the tables turn. The INA’s advance is thwarted and the victory march to Delhi is halted. Seventy years later, the British admit that the Battle of Kohima was the greatest battle they had ever fought. Even more so than the battles of Waterloo and Dunkirk. Was it then that old Indian curse — betrayal? Someone from within Netaji’s own ranks? Were there forces other than the British, waiting in the shadows closer to home, who stood to gain even ...
Power semiconductor devices are discussed in first chapter. SCR, GTO, LASCR, RCT, MCT, characteristics, rating turn-off and turn-on is presented. Power BJT, MOSFET, IGBT, driving circuits, protection and snubber circuits are also discussed. Commutation circuits and series and parallel operation are presented. Single and three phase controlled converters are given in second chapter. Half wave, full wave, midpoint, semiconverters, full converters, dual converters and effect of source inductance is also given. Operation with resistive and inductive load is discussed. Third chapter presents AC voltage controllers and cycloconverters. On-off control, phase control, triac based controllers are given. Cycloconverters and operations with inductive as well as resistive load are discussed. Choppers are given in fourth chapter. Step down, step up, voltage, current and load commutated choppers are given. Classification is also discussed. Last chapter presents inverters. Half bridge, full bridge, quasi square wave, push-pull, thyristorized inverters with resistive and inductive loads are given. Switching techniques for PWM inverters are also given.
Homogeneous and Heterogeneous Catalysis
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Clinical psychologist and author of The Defining Decade, Meg Jay takes us into the world of the supernormal: those who soar to unexpected heights after childhood adversity. Whether it is the loss of a parent to death or divorce; bullying; alcoholism or drug abuse in the home; mental illness in a parent or a sibling; neglect; emotional, physical or sexual abuse; having a parent in jail; or growing up alongside domestic violence, nearly 75% of us experience adversity by the age of 20. But these experiences are often kept secret, as are our courageous battles to overcome them. Drawing on nearly two decades of work with clients and students, Jay tells the tale of ordinary people made extraordina...
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A state-of-the-art primer on the role of pharmacological sciences in regenerative medicine, for advanced students, postdoctoral fellows, and researchers.