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Compensación de potencia reactiva en sistemas de distribución
La potencia reactiva es un concepto abstracto y difícil de definir, especialmente en sistemas con alto desbalance y presencia de armónicos, se trata de una potencia circulante entre el campo magnético y el campo eléctrico, sin ser realmente generada o consumida. Sin embargo, este intercambio energético produce corrientes circulantes que, a su vez, generan perdidas de potencia activa en las líneas de transmisión. Por ello, es importante buscar formas de compensar este fenómeno, especialmente en niveles de distribución. Este libro muestra un enfoque formal para abordar este problema empleado métodos de optimización matemática. Así mismo, se extiende el concepto de compensación a ...
Applied Computer Sciences in Engineering
This volume constitutes the refereed proceedings of the 6th Workshop on Engineering Applications, WEA 2019, held in Santa Marta, Colombia, in October 2019. The 62 revised full papers and 2 short papers presented in this volume were carefully reviewed and selected from 178 submissions. The papers are organized in the following topical sections: computer science; computational intelligence; bioengineering; Internet of things; power applications; simulation systems; optimization.
Pattern Design
Throughout history, patterns have come in countless permutations of motif, colour-way and scale. Yet what all have in common is the regularity of repetition, that insistent rhythm that animates a flat surface with a sense of movement and vitality and gives it depth. Evident in the arrangement of petals on a flower head, the branching growth of stems and vines, the spirals of a seashell - pattern is inherent in the natural world that surrounds us. Powerful and transformative, pattern has an irrepressible joie de vivre. With more than 1,500 illustrations of patterns from all ages and cultures, Pattern Design is a visual feast. This comprehensive compendium is arranged thematically according to type, with chapters on Flora, Fauna, Pictorial, Geometric and Abstract designs. These broad categories are supplemented by in-depth features highlighting the work of key designers from the rich history of pattern-making - such as William Morris, Sonia Delaunay, Charles and Ray Eames, Lucienne Day and Orla Kiely - along with sections detailing the characteristic motifs of key period styles from Baroque to Art Deco.
Control Design Techniques in Power Electronics Devices
This book deals specifically with control theories relevant to the design of control units for switched power electronics devices, for the most part represented by DC–DC converters and supplies, by rectifiers of different kinds and by inverters with varying topologies. The theoretical methods for designing controllers in linear and nonlinear systems are accompanied by multiple case studies and examples showing their application in the emerging field of power electronics.
Chess Results, 1986-1988
This reference work continues a comprehensive series chronicling men's chess competitions. Listed in this volume are the results of chess competitions from all over the world--including individual and team matches--from 1986 through 1988. Entries record location and, when available, the group that sponsored the event. First and last names of players are included whenever possible and are standardized for easy reference. Compiled from contemporary sources such as newspapers, periodicals, tournament records and match books, this work contains 843 tournament crosstables and 130 match scores, and is indexed by events and by players.
Baby Driver
Just as Jack Kerouac captured the beat of the '50s, his daughter captured the rhythm of the generation that followed. With a graceful, often disturbing detachment and a spellbinding gift for descriptive imagery, Jan Kerouac explores the tortured, freewheeling soul of a woman on her own road. From an adolescence of LSD, detention homes, probation, pregnancy, and a stillbirth in the Mexican tropics at age 15; to the peace movement in Haight-Ashbury and Washington state; to traveling by bus through Central America with a madman for a lover, Baby Driver moves with the force of a tropical storm.
Rethinking the Andes–Amazonia Divide
Nowhere on Earth is there an ecological transformation so swift and so extreme as between the snow-line of the high Andes and the tropical rainforest of Amazonia. The different disciplines that research the human past in South America have long tended to treat these two great subzones of the continent as self-contained enough to be taken independently of each other. Objections have repeatedly been raised, however, to warn against imagining too sharp a divide between the people and societies of the Andes and Amazonia, when there are also clear indications of significant connections and transitions between them. Rethinking the Andes–Amazonia Divide brings together archaeologists, linguists, ...
Acute Ischemic Stroke
This updated second edition of Acute Ischemic Stroke: Imaging and Intervention provides a comprehensive account of the state of the art in the diagnosis and treatment of acute ischemic stroke. The basic format of the first edition has been retained, with sections on fundamentals such as pathophysiology and causes, imaging techniques and interventions. However, each chapter has been revised to reflect the important recent progress in advanced neuroimaging and the use of interventional tools. In addition, a new chapter is included on the classification instruments for ischemic stroke and their use in predicting outcomes and therapeutic triage. All of the authors are internationally recognized experts and members of the interdisciplinary stroke team at the Massachusetts General Hospital and Harvard Medical School. The text is supported by numerous informative illustrations, and ease of reference is ensured through the inclusion of suitable tables. This book will serve as a unique source of up-to-date information for neurologists, emergency physicians, radiologists and other health care providers who care for the patient with acute ischemic stroke.
