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book (36)


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2011 (36)

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Book
Power quality harmonics analysis and real measurements data
Authors: --- ---
ISBN: 9535143956 9533073357 Year: 2011 Publisher: IntechOpen

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Nowadays, the increasing use of power electronics equipment origins important distortions. The perfect AC power systems are a pure sinusoidal wave, both voltage and current, but the ever-increasing existence of non-linear loads modify the characteristics of voltage and current from the ideal sinusoidal wave. This deviation from the ideal wave is reflected by the harmonics and, although its effects vary depending on the type of load, it affects the efficiency of an electrical system and can cause considerable damage to the systems and infrastructures. Ensuring optimal power quality after a good design and devices means productivity, efficiency, competitiveness and profitability. Nevertheless, nobody can assure the optimal power quality when there is a good design if the correct testing and working process from the obtained data is not properly assured at every instant; this entails processing the real data correctly. In this book the reader will be introduced to the harmonics analysis from the real measurement data and to the study of different industrial environments and electronic devices.


Book
Onde superficiali : lectures given at the Centro Internazionale Matematico Estivo (C.I.M.E.) held in Varenna (Como), Italy, September 4-13, 1961
Authors: ---
ISBN: 3642109810 3642109837 Year: 2011 Publisher: Heidelberg : Springer,

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G. Toraldo di Francia: Premessa.-C.M. Angulo: A discontinuity problem on surface waves: The excitation of a grounded dieletric slab by a waveguide.- C.J. Bouwkamp: Notes on the conference.- H. Bremmer: Electromagnetic wave propagation around the earth.- L.B. Felsen: Asymptotic evaluation of integrals.- L.B. Felsen: Alternative Green's function representations for a grounded dielectric slab.- G. Gerosa: Propagation of electromagnetic waves in rectangular guides loaded with magnetized ferrite.- D. Graffi: Sulle condizioni al contorno approssimate nell´elettromagnetismo.- M.A. Miller, V.I. Talanov: The use of the surfaces impedante concept in the theory of electromagnetic surface waves.- S. Spitz: Note on continuous coupling of surface waves.- F.J. Zucker: Electroomagnetic boundary waves.


Book
Teoria delle funzioni di piu variabili complesse e delle funzioni automorfe : lectures given at the Centro Internazionale Matematico Estivo (C.I.M.E.) held in Varenna (Como), Italy, September 3-12, 1956
Authors: ---
ISBN: 3642109217 3642109225 Year: 2011 Publisher: Berlin ; New York : Springer : Firenze : C.I.M.E. Foundation,

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Lectures: B. Eckmann: Cours sur les variétés complexes.- W. Fenchel: Introduzione alla teoria dei gruppi discontinui di trasformazioni.- Seminars: E. Martinelli: Punti di vista geometrici nello studio delle varietà a struttura complessa.- K. Stein: Leçons sur la théorie des fonctions de plusieurs variables complexes.- E. Peschl: Les invariants différentiels dans la théorie des fonctions de plusieurs variables complexes.


Book
Thin impedance vibrators : theory and applications
Author:
ISBN: 1441978496 9786613083616 144197850X 1283083612 Year: 2011 Publisher: New York : Springer,

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Thin Impedance Vibrators:  Theory and Applications is devoted to exploring the foundations of the theory of thin impedance vibrator antennas.  The text provides a continuation of the classic theory of thin perfectly conducting vibrators.  Many consider impedance conception one of the most universal models in the theory of wave processes, as it informs such a wide spectrum of uses in solving practical problems of electrodynamics.  This topic provides an opportunity to further search analytical solutions, allowing a simplification of the mathematical formulation of the boundary problem.  The theory strives to widen the boundaries of the impedance vibrator antennas application in complex modern radio-and-electronic systems and devices. The book is intended for practicing engineers and designers of antenna and waveguide systems.  It can be used to teach students about radiotechnical and radiophysical specialties.  The conclusion of the book lists many actual applied problems, which can provide inspiration for several potential PhD projects. Topics covered are: general questions of the theory of impedance vibrators in the spatial-frequency representation electromagnetic waves radiation by impedance vibrators in free space and material mediums electromagnetic waves radiation by impedance vibrators in material mediums over the perfectly conducting plane electromagnetic waves scattering by irregular impedance vibrators in free space generalized method of induced electromotive forces for investigation of the characteristics of impedance vibrators radiation of electromagnetic waves by radial impedance vibrators on the perfectly conducting sphere electromagnetic waves scattering by impedance vibrators in the rectangular waveguide.


Book
Propagazione delle onde elettromagnetiche : lectures given at the Centro Internazionale Matematico Estivo (C.I.M.E.), held in Varenna (Como), Italy, August 24-September 1, 1956
Authors: --- ---
ISBN: 3642109152 9786613448422 1283448424 3642109179 Year: 2011 Publisher: Heidelberg ; New York : Springer,

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Lectures: G. Toraldo di Francia: Lezioni sulla teoria della diffrazione elettromagnetica.- C.J. Bouwkamp: Theorie des multipoles, de l'antenne et de la diffraction des ondes.- Seminars: G. Eckart: Sur le fading des ondes ultracourtes et son analyse.- G. Agostinelli: Sulla teoria delle guide d´onda.- D. Graffi: Guide d´onda con dielettrico eterogeneo.


Book
Some aspects of diffusion theory : lectures given at the Centro Internazionale Matematico Estivo (C.I.M.E.) held in Varenna (Como), Italy, September 19-27,1966
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ISBN: 3642110509 3642110517 Year: 2011 Publisher: Berlin ; New York : Springer : Firenze : C.I.M.E. Foundation,

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V.C.A. Ferraro: Diffusion of ions in a plasma with applications to the ionosphere.- P.C. Kendall: On the diffusion in the atmosphere and ionosphere.-F. Henin: Kinetic equations and Brownian motion.- T. Kahan:Théorie des réacteurs nucléaires: méthodes de résolution perturbationnelles, interactives et variationnelles.- C. Cattaneo: Sulla conduzione del calore.- C. Agostinelli: Formule di Green per la diffusione del campo magnetico in un fluido elettricamente conduttore.- A. Pignedoli: Transformational methods applied to some one-dimensional problems concerning the equations of the neutron transport theory.- A. Pignedoli: On the rigorous analysis of the problem of neutron transport in a slab geometry and on some other results.- G. Sestini: Principi di massimo per le soluzioni di equazioni paraboliche.


Book
Lasers : Fundamentals and Applications
Authors: ---
ISBN: 144196441X 9786613476036 1441964428 1283476037 Year: 2011 Publisher: New York, NY : Springer US : Imprint: Springer,

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Lasers: Fundamentals and Applications, serves as a vital textbook to accompany undergraduate and graduate courses on lasers and their applications. Ever since their invention in 1960, lasers have assumed tremendous importance in the fields of science, engineering and technology because of their diverse uses in basic research and countless technological applications. This book provides a coherent presentation of the basic physics behind the way lasers work, and presents some of their most important applications in vivid detail. After reading this book, students will understand how to apply the concepts found within to practical, tangible situations. This textbook includes worked-out examples and exercises to enhance understanding, and the preface shows lecturers how to most beneficially match the textbook with their course curricula. The book includes several recent Nobel Lectures, which will further expose students to the emerging applications and excitement of working with lasers. Students who study lasers, laser applications, and optics and lasers will find this book to be an invaluable contribution to their understanding of the subject. Topics included and discussed in detail include: laser rate equations semiclassical theory of lasers optical resonators properties of laser beams fiber lasers semiconductor lasers applications of lsers to science and industry laser induced fusion.


Book
Non-linear continuum theories : lectures given at a summer school of the Centro Internazionale Matematico Estivo (C.I.M.E.), held in Bressanone (Bolzano), Italy, May 31-June 9, 1965
Authors: --- ---
ISBN: 3642110320 3642110339 Year: 2011 Publisher: Berlin : Springer,

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B. Coleman, M.E. Gurtin: Thermodynamics and wave propagation in Elastic and Viscoelastic media.- L. De Vito: Sui fondamenti della meccanica di sistemi continui (II).- G. Fichera: Problemi elastostatici con ambigue condizioni al contorno.- G. Grioli: Sistemi a trasformazioni reversibili.- W. Noll: the foundations of mechanics.- R.A. Toupin: Elasticity and electromagnetic.- C.C. Wang: Subfluids.


Book
Optical measurement of surface topography
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ISBN: 3642426840 3642120113 3642120121 Year: 2011 Publisher: New York : Springer,

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The measurement and characterisation of surface topography is crucial to modern manufacturing industry. The control of areal surface structure allows a manufacturer to radically alter the functionality of a part. Examples include structuring to effect fluidics, optics, tribology, aerodynamics and biology. To control such manu­facturing methods requires measurement strategies. There is now a large range of new optical techniques on the market, or being developed in academia, that can measure areal surface topography. Each method has its strong points and limitations. The book starts with introductory chapters on optical instruments, their common language, generic features and limitations, and their calibration. Each type of modern optical instrument is described (in a common format) by an expert in the field. The book is intended for both industrial and academic scientists and engineers, and will be useful for undergraduate and postgraduate studies.


Book
Electromagnetic radiation of electrons in periodic structures
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ISBN: 3642192475 3642192483 Year: 2011 Publisher: Heidelberg [Germany] : Springer,

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Periodic magnetic structures (undulators) are widely used in accelerators to generate monochromatic undulator radiation (UR) in the range from far infrared to the hard X-ray region. Another periodic crystalline structure is used to produce quasimonochromatic polarized photon beams via the coherent bremsstrahlung mechanism (CBS). Due to such characteristics as monochromaticity, polarization and adjustability, these types of radiation is of large interest for applied and basic research of accelerator-emitted radiation. The book provides a detailed overview of the fundamental principles behind electromagnetic radiation emitted from accelerated charged particles (e.g. UR, CBS, radiation of fast electrons in Laser flash fields) as well as a unified description of relatively new radiation mechanisms which attracted great interest in recent years. This are the so-called polarization radiation excited by the Coulomb field of incident particles in periodic structures, parametric X-rays, resonant transition radiation and the Smith-Purcell effect. Characteristics of such radiation sources and perspectives of their usage are discussed. The recent experimental results as well as their interpretation are presented.

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