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5 produkter
842 kr
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Published in 1845 as the first adequate account of Mozart to appear in English, Holmes' biography also was the first to be based upon Mozart's letters and the memoirs written following the composer's death in 1791. Writing just before vast changes would occur, Holmes describes music as it must have appeared to the cultured and liberal minds of his era.
479 kr
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This 1845 biography of Mozart by the music journalist Edward Holmes was the first to be published in English. Holmes, who numbered the poet Keats and the publisher Vincent Novello amongst his friends, wrote extensively for periodicals including the Musical Times and The Atlas. A lifelong admirer of Mozart's work, Holmes's keen understanding of its significance is evident throughout the biography. It is based on a thorough study of the then available printed and manuscript sources, in particular many of Mozart's letters which Holmes translated and included as he 'endeavoured throughout to let the composer tell his own story'. He was also able to consult Mozart's own catalogue of his works, that compiled by the publisher Johann André, and the Mozart autograph manuscripts bought by André from Mozart's widow Constanze. The work is written in a very approachable style and will appeal to anyone with an interest in Mozart.
521 kr
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228 kr
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1 826 kr
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High quality electrical service is key to power systems around the world, particularly in utilities and industrial facilities. Both voltage and grid frequency must be kept within tight limits to maintain functioning of critical infrastructure. The growing use of renewable power of intermittent character is adding to that challenge.One of the keys to achieving quality service is the protection system, which needs to be reliable, fast and with a good cost/benefit ratio. It consists of various components, including relays, circuit breakers and fuses. An understanding of the different behaviours of these components in the face of malfunctions, and of countermeasures, is needed.This book has established itself as a classic work in its field, allowing the reader to easily follow the ideas explored. It provides an overview of most aspects of electrical protections, with emphasis on distribution systems; but protection of generation and transmission systems are also addressed.For this 4th edition, new topics have been added, such as protection of renewable power plants and transient stability analysis. It offers a thorough revision of the material, particularly the numerical type of relays, protective functions, control, measurement, communications and oscillography features. Most chapters have illustrative examples using MATLAB or PSAT (Power System Analysis Tools). This work remains essential reading for researchers, utility engineers, design, maintenance and consulting engineers as well as for instructors and senior students.