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Electromagnetics (CC BY-SA 4.0) is an open textbook intended to serve as a primary textbook for a one-semester first course in undergraduate engineering electromagnetics, and includes:electric and magnetic fields; electromagnetic properties of materials; electromagnetic waves; and devices that operate according to associated electromagnetic principles including resistors,capacitors, inductors, transformers, generators, and transmission lines. This book employs the "transmission lines first" approach, in which transmission lines are introduced using a lumped-element equivalent circuit model fora differential length of transmission line, leading to one-dimensional wave equations for voltage and current. This book is intended for electrical engineering students in the third year of a bachelor of science degree program. A free electronic version of this book is available at: https://doi.org/10.7294/W4WQ01ZM
Using a systems framework, this textbook clearly explains how individual elements contribute to the overall performance of a radio system.
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With armed conflict in the Persian Gulf now upon us, Harvard archaeologist Steven LeBlanc takes a long-term view of the nature and roots of war, presenting a controversial thesis: The notion of the "noble savage" living in peace with one another and in harmony with nature is a fantasy. In Constant Battles: The Myth of the Peaceful, Noble Savage, LeBlanc contends that warfare and violent conflict have existed throughout human history, and that humans have never lived in ecological balance with nature. The start of the second major U.S. military action in the Persian Gulf, combined with regular headlines about spiraling environmental destruction, would tempt anyone to conclude that humankind i...
The 4th edition of this classic text provides a thorough coverage of RF and microwave engineering concepts, starting from fundamental principles of electrical engineering, with applications to microwave circuits and devices of practical importance. Coverage includes microwave network analysis, impedance matching, directional couplers and hybrids, microwave filters, ferrite devices, noise, nonlinear effects, and the design of microwave oscillators, amplifiers, and mixers. Material on microwave and RF systems includes wireless communications, radar, radiometry, and radiation hazards. A large number of examples and end-of-chapter problems test the reader's understanding of the material. The 4th edition includes new and updated material on systems, noise, active devices and circuits, power waves, transients, RF CMOS circuits, and more.
Skillfully written, Aunting recovers the enormous potential of this dynamic kinship relationship and offers a model for understanding and supporting the variety of families in society today.
As For Me and My House is an essential Canadian work--a precise and compelling portrait of our culture, our psyche, and the nature of contemporary art itself, now available as a Penguin Modern Classic. In the windswept town of Horizon, an unamed diarist paints a vivid and enthralling picture of prairie life in the Depression era. Atmospheric, intimate, and richly observed, As For Me and My House is a moving meditation on the bittersweet nature of human relationships, on the bonds that tie people together and the undercurrents of feeling that can tear them apart. It is one of Canada's great novels and a landmark in modern fiction.
Explaining that musicality is an essential touchstone of the human experience, a concise introduction to the study of the nature of music, its community and its cultural values explains the diverse work of today's ethnomusicologists and how researchers apply anthropological and other social disciplines to studies of human and cultural behaviors. Original.