Download or read book DIAGNOSTIC ELECTROMAGNETIQUE MATRICIEL DES ANTENNES RESEAUX AU MOYEN DE MESURES DE CHAMPS PROCHES written by LAROUSSI.. GATTOUFI and published by . This book was released on 1998 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: LE BESOIN D'ANTENNES DE PLUS EN PLUS PERFORMANTES ET SOUPLES D'UTILISATION CONDUIT A UNE DIFFUSION CROISSANTE DES ANTENNES RESEAUX. LE RAYONNEMENT D'UNE TELLE ANTENNE DEPEND DE LA REPARTITION DE L'ALIMENTATION DE CHAQUE ELEMENT. LA CONCEPTION, LE REGLAGE ET LE CONTROLE DE CES ANTENNES RESEAUX NECESSITENT LA MESURE DE CETTE LOI D'ALIMENTATION. CETTE THESE EXPOSE UNE METHODE DE DETERMINATION EXPERIMENTALE DE CETTE QUANTITE A PARTIR D'UNE MESURE DE CHAMP PROCHE RAYONNE PAR L'ANTENNE : LA METHODE MATRICIELLE. UNE ETUDE PARAMETRIQUE A ETE EFFECTUEE A L'AIDE DE SIMULATIONS NUMERIQUES POUR EVALUER L'EFFET DES PARAMETRES ET DEFINIR UNE OU PLUSIEURS CONFIGURATIONS OPTIMALES : DISTANCE DE MESURE, NOMBRE DES POINTS DE MESURE, . LA ROBUSTESSE DE L'INVERSION DE CE PROBLEME INVERSE A EGALEMENT ETE AMELIOREE PAR L'UTILISATION D'UNE TECHNIQUE DE REGULARISATION. LA PRECISION OBTENUE PAR LA METHODE MATRICIELLE EST TRES BONNE ET A ETE SENSIBLEMENT VALIDEE PAR DES EXPERIMENTATIONS. EN PLUS LE NOMBRE DE POINTS DE MESURE A ETE REDUIT COMPARATIVEMENT A D'AUTRES METHODES PLUS POPULAIRES. VU CES AVANTAGES EXCEPTIONNELS, LA METHODE MATRICIELLE DEVRAIT ETRE UTILISEE CHEZ LES INDUSTRIELS DES ANTENNES DANS UN PROCHE AVENIR.
Download or read book Diagnostic lectromagn tique matriciel des antennes r seaux au moyen de mesures de champs proches written by LAROUSSI.. GATTOUFI and published by . This book was released on 1998 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le besoin d'antennes de plsu en plus performantes et souples d'utilisation conduit à une diffusion croissante des antennes réseaux. Le rayonnement d'une telle antenne dépend de la répartition de l'alimentation de chaque élément. La conception, le réglage et le contrôle de ces antennes réseaux nécessitent la mesure de cette loi d'alimentation. Cette thèse expose une méthode de détermination expérimentale de cette quantité à partir d'une mesure de champ proche rayonné par l'antenne : la méthode matricielle. Une étude paramétrique a été effectuée à l'aide de simulations numériques pour évaluer l'effet des paramètres et définir une ou plusieurs configurations optimales : distance de mesure, nombre des points de mesure... La robustesse de l'inversion de ce problème inverse a également été améliorée par l'utilisation d'une technique de régularisation. La précision obtenue par la méthode matricielle est très bonne et a été sensiblement validée par des expérimentations. En plus le nombre de points de mesure a été réduit comparativement à d'autres méthodes plus populaires. Vu ces avantages exceptionnels, la méthode matricielle devrait être utilisée chez les industriels des antennes dans un proche avenir.
Download or read book tude et am lioration des performances d une m thode de mesure en champ proche written by Jérôme Colinas and published by . This book was released on 2001 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quantum Mechanics Volume 3 written by Claude Cohen-Tannoudji and published by John Wiley & Sons. This book was released on 2019-12-16 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new, third volume of Cohen-Tannoudji's groundbreaking textbook covers advanced topics of quantum mechanics such as uncorrelated and correlated identical particles, the quantum theory of the electromagnetic field, absorption, emission and scattering of photons by atoms, and quantum entanglement. Written in a didactically unrivalled manner, the textbook explains the fundamental concepts in seven chapters which are elaborated in accompanying complements that provide more detailed discussions, examples and applications. * Completing the success story: the third and final volume of the quantum mechanics textbook written by 1997 Nobel laureate Claude Cohen-Tannoudji and his colleagues Bernard Diu and Franck Laloë * As easily comprehensible as possible: all steps of the physical background and its mathematical representation are spelled out explicitly * Comprehensive: in addition to the fundamentals themselves, the books comes with a wealth of elaborately explained examples and applications Claude Cohen-Tannoudji was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris where he also studied and received his PhD in 1962. In 1973 he became Professor of atomic and molecular physics at the Collège des France. His main research interests were optical pumping, quantum optics and atom-photon interactions. In 1997, Claude Cohen-Tannoudji, together with Steven Chu and William D. Phillips, was awarded the Nobel Prize in Physics for his research on laser cooling and trapping of neutral atoms. Bernard Diu was Professor at the Denis Diderot University (Paris VII). He was engaged in research at the Laboratory of Theoretical Physics and High Energy where his focus was on strong interactions physics and statistical mechanics. Franck Laloë was a researcher at the Kastler-Brossel laboratory of the Ecole Normale Supérieure in Paris. His first assignment was with the University of Paris VI before he was appointed to the CNRS, the French National Research Center. His research was focused on optical pumping, statistical mechanics of quantum gases, musical acoustics and the foundations of quantum mechanics.
Download or read book Space Systems as Contributors to the NATO Defence Mission written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Mission Systems Panel. Symposium and published by . This book was released on 1997 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Buyology written by Martin Lindstrom and published by Currency. This book was released on 2010-02-02 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: NEW YORK TIMES BESTSELLER • “A fascinating look at how consumers perceive logos, ads, commercials, brands, and products.”—Time How much do we know about why we buy? What truly influences our decisions in today’s message-cluttered world? In Buyology, Martin Lindstrom presents the astonishing findings from his groundbreaking three-year, seven-million-dollar neuromarketing study—a cutting-edge experiment that peered inside the brains of 2,000 volunteers from all around the world as they encountered various ads, logos, commercials, brands, and products. His startling results shatter much of what we have long believed about what captures our interest—and drives us to buy. Among the questions he explores: • Does sex actually sell? • Does subliminal advertising still surround us? • Can “cool” brands trigger our mating instincts? • Can our other senses—smell, touch, and sound—be aroused when we see a product? Buyology is a fascinating and shocking journey into the mind of today's consumer that will captivate anyone who's been seduced—or turned off—by marketers' relentless attempts to win our loyalty, our money, and our minds.
Download or read book Signal Processing for Communications written by Paolo Prandoni and published by Collection Savoir suisse. This book was released on 2008-06-17 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: With a novel, less classical approach to the subject, the authors have written a book with the conviction that signal processing should be taught to be fun. The treatment is therefore less focused on the mathematics and more on the conceptual aspects, the idea being to allow the readers to think about the subject at a higher conceptual level, thus building the foundations for more advanced topics. The book remains an engineering text, with the goal of helping students solve real-world problems. In this vein, the last chapter pulls together the individual topics as discussed throughout the book into an in-depth look at the development of an end-to-end communication system, namely, a modem for communicating digital information over an analog channel.
Download or read book Scientific Canadian Mechanics Magazine and Patent Office Record written by Canada. Patent Office and published by . This book was released on 1966-03 with total page 1070 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Principles of Digital Communication written by Bixio Rimoldi and published by Cambridge University Press. This book was released on 2016-01-21 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive text that takes a unique top-down approach to teaching the fundamentals of digital communication for a one-semester course.
Download or read book A Short Introduction to Quantum Information and Quantum Computation written by Michel Le Bellac and published by Cambridge University Press. This book was released on 2006-06-15 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum information and computation is a rapidly expanding and cross-disciplinary subject. This book, first published in 2006, gives a self-contained introduction to the field for physicists, mathematicians and computer scientists who want to know more about this exciting subject. After a step-by-step introduction to the quantum bit (qubit) and its main properties, the author presents the necessary background in quantum mechanics. The core of the subject, quantum computation, is illustrated by a detailed treatment of three quantum algorithms: Deutsch, Grover and Shor. The final chapters are devoted to the physical implementation of quantum computers, including the most recent aspects, such as superconducting qubits and quantum dots, and to a short account of quantum information. Written at a level suitable for undergraduates in physical sciences, no previous knowledge of quantum mechanics is assumed, and only elementary notions of physics are required. The book includes many short exercises, with solutions available to instructors through [email protected].
Download or read book The Physics of Information Technology written by Neil Gershenfeld and published by Cambridge University Press. This book was released on 2000-10-16 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Physics of Information Technology explores the familiar devices that we use to collect, transform, transmit, and interact with electronic information. Many such devices operate surprisingly close to very many fundamental physical limits. Understanding how such devices work, and how they can (and cannot) be improved, requires deep insight into the character of physical law as well as engineering practice. The book starts with an introduction to units, forces, and the probabilistic foundations of noise and signalling, then progresses through the electromagnetics of wired and wireless communications, and the quantum mechanics of electronic, optical, and magnetic materials, to discussions of mechanisms for computation, storage, sensing, and display. This self-contained volume will help both physical scientists and computer scientists see beyond the conventional division between hardware and software to understand the implications of physical theory for information manipulation.
Download or read book Triumph of a Time Lord written by Matt Hills and published by Bloomsbury Publishing. This book was released on 2010-01-30 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Before Saturday March 26th 2005, "Doctor Who" had been off the air as a regular, new TV series for more than fifteen years; until a production team led by Russell T. Davies re-imagined the programme so successfully, so triumphantly, that it's become an instant Christmas tradition, a BAFTA winner, an international 'superbrand' and a number one rated show. It's even been credited with reinventing family TV. This is the first full-length book to explore the 'new Who' phenomenon through to the casting of Matt Smith as the new Doctor. It explores "Doctor Who" through contemporary debates in TV Studies about quality TV and how can we define TV series as both 'cult' and 'mainstream'. Further, the book challenges assumptions in focusing on the importance of breath-taking, dramatic moments along with narrative structures, and in analysing the significance of Murray Gold's music as well as the series' visual representations. Matt Hills is a lifelong "Who" fan and he also considers the role of fandom in the show's return. He investigates too the multi-generic identity, the monster-led format, and the time-travelling brand of BBC Wales' 'Doctor Who'. In the twenty-first century, TV is changing, but the last of the Time Lords has been more than ready: he's been fantastic.
Download or read book Foundations of Signal Processing written by Martin Vetterli and published by Cambridge University Press. This book was released on 2014-09-04 with total page 745 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive and engaging textbook introduces the basic principles and techniques of signal processing, from the fundamental ideas of signals and systems theory to real-world applications. Students are introduced to the powerful foundations of modern signal processing, including the basic geometry of Hilbert space, the mathematics of Fourier transforms, and essentials of sampling, interpolation, approximation and compression The authors discuss real-world issues and hurdles to using these tools, and ways of adapting them to overcome problems of finiteness and localization, the limitations of uncertainty, and computational costs. It includes over 160 homework problems and over 220 worked examples, specifically designed to test and expand students' understanding of the fundamentals of signal processing, and is accompanied by extensive online materials designed to aid learning, including Mathematica® resources and interactive demonstrations.
Download or read book Show Sold Separately written by Jonathan Gray and published by NYU Press. This book was released on 2010-01-01 with total page 261 pages. Available in PDF, EPUB and Kindle. Book excerpt: Highlights the trailers, merchandising and cultural conversations that shape our experiences of film and television It is virtually impossible to watch a movie or TV show without preconceived notions because of the hype that precedes them, while a host of media extensions guarantees them a life long past their air dates. An onslaught of information from print media, trailers, internet discussion, merchandising, podcasts, and guerilla marketing, we generally know something about upcoming movies and TV shows well before they are even released or aired. The extras, or “paratexts,” that surround viewing experiences are far from peripheral, shaping our understanding of them and informing our decisions about what to watch or not watch and even how to watch before we even sit down for a show. Show Sold Separately gives critical attention to this ubiquitous but often overlooked phenomenon, examining paratexts like DVD bonus materials for The Lord of the Rings, spoilers for Lost, the opening credits of The Simpsons, Star Wars actions figures, press reviews for Friday Night Lights, the framing of Batman Begins, the videogame of The Thing, and the trailers for The Sweet Hereafter. Plucking these extra materials from the wings and giving them the spotlight they deserve, Jonathan Gray examines the world of film and television that exists before and after the show.
Download or read book The Columbia History of American Television written by Gary Richard Edgerton and published by Columbia University Press. This book was released on 2007 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: Richly researched and engaging, The Columbia History of American Television tracks the growth of TV into a convergent technology, a global industry, a social catalyst, a viable art form, and a complex and dynamic reflection of the American mind and character. Renowned media historian Gary R. Edgerton follows the technological progress and increasing cultural relevance of television from its prehistory (before 1947) to the Network Era (1948-1975) and the Cable Era (1976-1994). He considers the remodeling of television's look and purpose during World War II; the gender, racial, and ethnic components of its early broadcasts and audiences; its transformation of postwar America; and its function in the political life of the country. In conclusion, Edgerton takes a discerning look at our current Digital Era and the new forms of instantaneous communication that continue to change America's social, political, and economic landscape.
Download or read book Food Fray written by Lisa H. WEASEL Ph.D. and published by AMACOM Div American Mgmt Assn. This book was released on 2008-12-10 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: More than ten years ago, the first genetically modified foods took their place on the shelves of American supermarkets. But while American consumers remained blissfully unconcerned with the new products that suddenly filled their kitchens, Europeans were much more wary of these “Frankenfoods.” When famine struck Africa in 2002, several nations refused shipments of genetically modified foods, fueling a controversy that put the issue on the world's political agenda for good. In Food Fray, esteemed molecular biologist Dr. Lisa H. Weasel brings readers into the center of this debate, capturing the real-life experiences of the scientists, farmers, policymakers and grassroots activists on the front lines. Here she combines solid scientific knowledge and a gripping narrative to tell the real story behind the headlines and the hype. Seminal and cutting-edge, Food Fray enlightens and informs and will allow readers to make up their own minds about one of the most important issues facing us today.
Download or read book Basic Elements of Narrative written by David Herman and published by John Wiley & Sons. This book was released on 2011-09-13 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Basic Elements of Narrative outlines a way of thinking about what narrative is and how to identify its basic elements across various media, introducing key concepts developed by previous theorists and contributing original ideas to the growing body of scholarship on stories. Includes an overview of recent developments in narrative scholarship Provides an accessible introduction to key concepts in the field Views narrative as a cognitive structure, type of text, and resource for interpersonal communication Uses examples from literature, face to face interaction, graphic novels, and film to explore the core features of narrative Includes a glossary of key terms, full bibliography, and comprehensive index Appropriate for multiple audiences, including students, non-specialists, and experts in the field
