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 English | 2021 | ISBN: 1032160810 | 304 pages | True PDF | 83.46 MB Have you ever wondered how NASA designs, builds, and tests spacecrafts and hardware for space? How is it that wildly successful programs such as the Mars Exploration Rovers could produce a rover that lasted over ten times the expected prime mission duration? Or build a spacecraft designed to visit two orbiting destinations and last over 10 years when the fuel ran out? This book was written by NASA/JPL engineers with experience across multiple projects, including the Mars rovers, Mars helicopter, and Dawn ion propulsion spacecraft in addition to many more missions and technology demonstration programs. It provides useful and practical approaches to solving the most complex thermal-structural problems ever attempted for design spacecraft to survive the severe cold of deep space, as well as the unforgiving temperature swings on the surface of Mars. This is done without losing sight of the fundamental and classical theories of thermodynamics and structural mechanics that paved the way to more pragmatic and applied methods such finite element analysis and Monte Carlo ray tracing, for example.  English | 2021 | ISBN: 1637580142 | 300 pages | True EPUB | 2.12 MB The verdict is in: Free enterprise has lifted billions of people out of abject poverty all over the world and provided a higher quality of life than has ever been thought possible. But a growing case is forming in public opinion against free markets, and for a significantly larger command & control management of the economy. Whether you call it socialism or progressive leftism, more and more people are turning away from the forces of freedom and social cooperation that made the last two hundred years of prosperity possible, and embracing a system that deprives human beings of their dignity, impoverishing whole societies both financially and spiritually.  English | 2020 | ISBN: 9811217408 | 615 pages | True PDF EPUB | 30.93 MB This book is a sequel to the book by the same authors entitled Theory of Groups and Symmetries: Finite Groups, Lie Groups, and Lie Algebras.The presentation begins with the Dirac notation, which is illustrated by boson and fermion oscillator algebras and also Grassmann algebra. Then detailed account of finite-dimensional representations of groups SL(2, C) and SU(2) and their Lie algebras is presented. The general theory of finite-dimensional irreducible representations of simple Lie algebras based on the construction of highest weight representations is given. The classification of all finite-dimensional irreducible representations of the Lie algebras of the classical series sℓ(n, C), so(n, C) and sp(2r, C) is exposed.Finite-dimensional irreducible representations of linear groups SL(N, C) and their compact forms SU(N) are constructed on the basis of the Schur-Weyl duality. A special role here is played by the theory of representations of the symmetric group algebra C[Sr] (Schur-Frobenius theory, Okounkov-Vershik approach), based on combinatorics of Young diagrams and Young tableaux. Similar construction is given for pseudo-orthogonal groups O(p, q) and SO(p, q), including Lorentz groups O(1, N-1) and SO(1, N-1), and their Lie algebras, as well as symplectic groups Sp(p, q). The representation theory of Brauer algebra (centralizer algebra of SO(p, q) and Sp(p, q) groups in tensor representations) is discussed.Finally, the covering groups Spin(p, q) for pseudo-orthogonal groups SO↑(p, q) are studied. For this purpose, Clifford algebras in spaces Rp, q are introduced and representations of these algebras are discussed.  English | 2021 | ISBN: 0300257325 | 287 pages | True PDF | 20.34 MB An investigation into the evolution of the seven-day week and how our attachment to its rhythms influences how we live  English | 2021 | ISBN: 1119811902 | 304 pages | True PDF | 11.55 MB A Wall Street Insider's Guide to getting ahead in any highly competitive industry  English | 2021 | ISBN: 1419758403 | 211 pages | True EPUB | 27.07 MB The official companion book to the feature-length documentaryStreet Gang: How We Got to Sesame Street, featuring previously unpublished photographs from the earliest seasons ofSesame Streetand interviews with cast and crew  English | 2021 | ISBN: 1507216726 | 198 pages | True epub | 71.04 MB Dine like the lords and ladies and bring the high society meals and treats home with these 100 delicious recipes inspired by Netflix's most-watched series of all time-Bridgerton.  English | 2021 | ISBN: 0691199612 | 281 pages | True PDF EPUB | 13.3 MB Two simple yet tremendously powerful ideas that shaped virtually every aspect of civilization  English | 2021 | ISBN: 1911188887 | 561 pages | True PDF EPUB | 178.01 MB About the Authr: Dr Mark Johnston is an independent scholar with over forty years experience in the greenspace industry, including working as a tree officer in local government, consultant in private practice, government adviser and university lecturer. He is a Fellow of the Institute of Chartered Foresters (Chartered Arboriculturist), Fellow of the Chartered Institute of Horticulture and Honorary Fellow of the Arboricultural Association. Although originally from London, Mark is based in Belfast where he has lived for the past twenty-five years. In 2007, he was appointed MBE in recognition of his services to trees and the urban environment. In 2009, Mark became the first British person to receive the International Society of Arboriculture's most prestigious honour, the Award of Merit.  English | 2022 | ISBN: 0367651017 | 471 pages | True PDF | 9.33 MB The theory and applications of Iteration Methods is a very fast-developing field of numerical analysis and computer methods. The second edition is completely updated and continues to present the state-of-the-art contemporary theory of iteration methods with practical applications, exercises, case studies, and examples of where and how they can be used. |
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