Download or read book Applications nouvelles de la methode des lignes de transmission T L M a l etude des antennes imprimees written by Omar Messaoudi and published by . This book was released on 1989 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book APPLICATIONS NOUVELLES DE LA METHODE DES LIGNES DE TRANSMISSION T L M A L ETUDE DES ANTENNES IMPRIMEES written by OMAR.. MESSAOUDI and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: UNE METHODE DE SIMULATION DYNAMIQUE (TLM) DE LA PROPAGATION DES ONDES ELECTROMAGNETIQUES EST DEVELOPPEE POUR L'ETUDE DES STRUCTURES RAYONNANTES EN GENERAL, ET DES ANTENNES IMPRIMEES EN PARTICULIER. L'APPORT DES TECHNIQUES DE DISCRETISATION SPATIALE A PAS VARIABLE EST MIS EN EVIDENCE. DEUX PROCEDES DE SIMULATION DE L'ESPACE INFINI SONT PROPOSES ET VALIDES. L'EXCITATION IMPULSIONNELLE PERMET L'OBTENTION DE L'ENSEMBLE DE LA REPONSE FREQUENTIELLE. L'IMPEDANCE D'ENTREE ET LE DIAGRAMME DE RAYONNEMENT SONT DETERMINEES PAR LA METHODE TLM EN UTILISANT RESPECTIVEMENT LA THEORIE DES LIGNES ET LA THEORIE DE RAYONNEMENT DES OUVERTURES PLANES. L'ACCENT EST MIS SUR LES NOMBREUX AVANTAGES ET POSSIBILITES DE LA METHODE TLM. L'APPLICATION A DES ANTENNES MULTIDIELECTRIQUES MONTRE LA CAPACITE DE LA METHODE DANS L'ETUDE DE STRUCTURES COMPLEXES. LES RESULTATS OBTENUS SONT CONFRONTES A D'AUTRES TRAVAUX THEORIQUES ET EXPERIMENTAUX
Download or read book CARACTERISATION D ANTENNES IMPRIMEES PAR LA METHODE DE LA MATRICE DES LIGNES DE TRANSMISSION TLM ASSOCIEE A UNE TECHNIQUE MODERNE DE TRAITEMENT NUMERIQUE DU SIGNAL written by JEAN-LOU.. DUBARD and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: LA METHODE DE LA MATRICE DES LIGNES DE TRANSMISSION (TLM) PERMET LA SIMULATION NUMERIQUE DE LA PROPAGATION DES ONDES ELECTROMAGNETIQUES CREEES PAR LES ANTENNES IMPRIMEES. L'ETUDE EN FONCTION DE LA FREQUENCE EST OBTENUE EN EFFECTUANT L'ANALYSE SPECTRALE DE LA REPONSE TEMPORELLE DE L'ANTENNE A UNE EXCITATION IMPULSIONNELLE. POUR CELA, L'OUTIL LE PLUS COURAMMENT UTILISE EST LA TRANSFORMATION DE FOURIER. CETTE TECHNIQUE NECESSITE L'OBSERVATION DE LA REPONSE IMPULSIONNELLE SUR UN INTERVALLE DE TEMPS TRES LONG. CECI IMPLIQUE UNE DUREE PROHIBITIVE DE LA SIMULATION TLM RENDANT ILLUSOIRE L'ANALYSE D'ANTENNES IMPRIMEES. LE PREMIER OBJECTIF DE CE TRAVAIL A ETE DE REDUIRE LA DUREE DE CALCUL DE LA METHODE TLM EN REMPLACANT LA TRANSFORMATION DE FOURIER CLASSIQUE PAR UNE DES TECHNIQUES MODERNES DE TRAITEMENT NUMERIQUE DU SIGNAL. AYANT PASSE EN REVUE LES PRINCIPALES METHODES D'ANALYSE SPECTRALE PARAMETRIQUE, NOUS AVONS CHOISI UNE TECHNIQUE QUI FAIT APPEL AU MODELE DE PRONY. L'ESTIMATION DES PARAMETRES EST EFFECTUEE EN RESOLVANT UN PROBLEME AUX VALEURS PROPRES, COMME DANS LA METHODE DE PISARENKO. POUR FACILITER SA MISE EN UVRE, NOUS AVONS ELABORE UN CRITERE DE CONVERGENCE QUI DETERMINE LE NOMBRE OPTIMAL DE PARAMETRES GARANTISSANT UNE ANALYSE SPECTRALE PRECISE. AINSI, LE TEMPS DE CALCUL DE LA METHODE TLM A ETE REDUIT D'UN FACTEUR DIX. CE GAIN IMPORTANT A RENDU POSSIBLE LA DETERMINATION DES IMPEDANCES D'ENTREE POUR DES STRUCTURES AUSSI COMPLEXES QUE DES ANTENNES IMPRIMEES MULTICOUCHES ALIMENTEES PAR LIGNE MICRORUBAN ET COUPLAGE ELECTROMAGNETIQUE A TRAVERS UNE FENTE. NOUS AVONS EGALEMENT ETUDIE L'INFLUENCE DES DIMENSIONS FINIES DU PLAN DE MASSE ET DES SUBSTRATS DIELECTRIQUES SUR LES DIAGRAMMES DE RAYONNEMENT. LES COMPARAISONS AVEC L'EXPERIENCE ONT PERMIS DE VALIDER LES RESULTATS
Download or read book Global Wikipedia written by Pnina Fichman and published by Rowman & Littlefield. This book was released on 2014-05-15 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dozens of books about Wikipedia are available, but they all focus on the English Wikipedia and assume an Anglo-Saxon perspective, while disregarding cultural and language variability or multi-cultural collaborative efforts. They address the impact of Wikipedia on society, processes of mass knowledge production, and the dynamics of the Wikipedia community. However, none of them focus on Wikipedia’s global features. This lack of attention presents a serious problem because more than 80% of Wikipedia articles are written in languages other than English---in fact, Wikipedia includes articles in 285 languages. Global Wikipedia: International and Cross-Cultural Issues in Online Collaboration is the first book to address this gap by focusing attention on the global, multilingual, and multicultural aspects of Wikipedia. The editors showcase research on Wikipedia, exploring a wide range of international and cross-cultural issues. Online global collaboration, coordination, and conflict management are examined in this rich socio technical environment. Special emphases include International and cross-cultural collaboration; Intercultural synergy on Wikimedia; Conflict and collaboration in editing international entries; Case studies of Chinese, Finnish, French, and Greek Wikipedias; and, Cross-cultural studies that compare more than one Wikipedia, focusing on content, structures, policies, contributions, interactions, processes, motivations, and challenges.
Download or read book The Wikipedia Revolution written by Andrew Lih and published by Hachette Books. This book was released on 2009-03-17 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Imagine a world in which every single person on the planet is given free access to the sum of all human knowledge. That's what we're doing." --Jimmy Wales With more than 2,000,000 individual articles on everything from Aa! (a Japanese pop group) to Zzyzx, California, written by an army of volunteer contributors, Wikipedia is the #8 site on the World Wide Web. Created (and corrected) by anyone with access to a computer, this impressive assemblage of knowledge is growing at an astonishing rate of more than 30,000,000 words a month. Now for the first time, a Wikipedia insider tells the story of how it all happened -- from the first glimmer of an idea to the global phenomenon it's become. Andrew Lih has been an administrator (a trusted user who is granted access to technical features) at Wikipedia for more than four years, as well as a regular host of the weekly Wikipedia podcast. In The Wikipedia Revolution, he details the site's inception in 2001, its evolution, and its remarkable growth, while also explaining its larger cultural repercussions. Wikipedia is not just a website; it's a global community of contributors who have banded together out of a shared passion for making knowledge free. Featuring a Foreword by Wikipedia founder Jimmy Wales and an Afterword that is itself a Wikipedia creation.
Download or read book Nature and History in Modern Italy written by Marco Armiero and published by Ohio University Press. This book was released on 2010-08-31 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: Marco Armiero is Senior Researcher at the Italian National Research Council and Marie Curie Fellow at the Institute of Environmental Sciences and Technologies, Universitat Aut(noma de Barcelona. He has published extensively on-Italian environmental history and edited Views from the South: Environmental Stories from the Mediterranean World. --
Download or read book The Orientalizing Revolution written by Walter Burkert and published by Harvard University Press. This book was released on 1992 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ancient Greek culture is often described as a miracle, owing little to its neighbors. Walter Burkert argues against a distorted view, toward a more balanced picture. "Under the influence of the Semitic East--from writers, craftsmen, merchants, healers--Greek culture began its unique flowering, soon to assume cultural hegemony in the Mediterranean."
Download or read book Open Sources 2 0 written by Chris DiBona and published by "O'Reilly Media, Inc.". This book was released on 2005-10-21 with total page 491 pages. Available in PDF, EPUB and Kindle. Book excerpt: Open Sources 2.0 is a collection of insightful and thought-provoking essays from today's technology leaders that continues painting the evolutionary picture that developed in the 1999 book Open Sources: Voices from the Revolution . These essays explore open source's impact on the software industry and reveal how open source concepts are infiltrating other areas of commerce and society. The essays appeal to a broad audience: the software developer will find thoughtful reflections on practices and methodology from leading open source developers like Jeremy Allison and Ben Laurie, while the business executive will find analyses of business strategies from the likes of Sleepycat co-founder and CEO Michael Olson and Open Source Business Conference founder Matt Asay. From China, Europe, India, and Brazil we get essays that describe the developing world's efforts to join the technology forefront and use open source to take control of its high tech destiny. For anyone with a strong interest in technology trends, these essays are a must-read. The enduring significance of open source goes well beyond high technology, however. At the heart of the new paradigm is network-enabled distributed collaboration: the growing impact of this model on all forms of online collaboration is fundamentally challenging our modern notion of community. What does the future hold? Veteran open source commentators Tim O'Reilly and Doc Searls offer their perspectives, as do leading open source scholars Steven Weber and Sonali Shah. Andrew Hessel traces the migration of open source ideas from computer technology to biotechnology, and Wikipedia co-founder Larry Sanger and Slashdot co-founder Jeff Bates provide frontline views of functioning, flourishing online collaborative communities. The power of collaboration, enabled by the internet and open source software, is changing the world in ways we can only begin to imagine.Open Sources 2.0 further develops the evolutionary picture that emerged in the original Open Sources and expounds on the transformative open source philosophy. "This is a wonderful collection of thoughts and examples bygreat minds from the free software movement, and is a must have foranyone who follows free software development and project histories." --Robin Monks, Free Software Magazine The list of contributors include Alolita Sharma Andrew Hessel Ben Laurie Boon-Lock Yeo Bruno Souza Chris DiBona Danese Cooper Doc Searls Eugene Kim Gregorio Robles Ian Murdock Jeff Bates Jeremy Allison Jesus M. Gonzalez-Barahona Kim Polese Larry Sanger Louisa Liu Mark Stone Mark Stone Matthew N. Asay Michael Olson Mitchell Baker Pamela Jones Robert Adkins Russ Nelson Sonali K. Shah Stephen R. Walli Steven Weber Sunil Saxena Tim O'Reilly Wendy Seltzer
Download or read book The Lebanon Mount Souria written by David Urquhart and published by . This book was released on 1860 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Arab Nationalism written by B. Tibi and published by Springer. This book was released on 1990-06-29 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this new edition Professor Tibi analyses the impact and function of nationalism and its contribution to social and political change in the Third World, taking the rise of nationalism in the Middle East as a historical example. He concentrates on the period after the First World War, when many Arab intellectuals became disillusioned with Britain and France as a result of the occupation of their countries. Professor Tibi's careful study of the writings and influence of Sati' al-Husri illustrates the connection between modern Arab nationalism and nineteenth century German Romantic nationalism, which will be of particular interest to the English reader. Professor Tibi concludes that while nationalism has played a necessary and important role in the movement for national independence in the Middle East, it has since developed into an ideology which seems to obstruct further social and political emancipation. This book will be of particular interest to historians and social scientists as well as to specialists in the area itself.
Download or read book The New Century Italian Renaissance Encyclopedia written by Catherine B. Avery and published by . This book was released on 1972 with total page 1076 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cultural Mobility written by Stephen Greenblatt and published by Cambridge University Press. This book was released on 2010 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cultural Mobility offers a model for understanding the patterns of meaning that human societies create. It has emerged under the very distinguished editorial guidance of Stephen Greenblatt and represents a new way of thinking about culture and cultures with which scholars in many disciplines will need to engage.
Download or read book Comparative Poetics written by Earl Roy Miner and published by Princeton University Press. This book was released on 1990-10-23 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Comparative literature," Earl Miner writes, "clearly involves something more than comparing two great German poets, and something different from a Chinese studying French literature or a Russian studying Italian literature." But what would a true intercultural poetics be? This work proposes various ways to "study something other than what are, all things considered, the short and simple annals of one cultural parish at one historic moment." The first developed account of theories of literature from an intercultural standpoint, the book shows that an "originative" or "foundational" poetics develops in cultures with explicit poetics when critics define the nature and conditions of literature in terms of the then most esteemed genredrama, lyric, or narrative. Earl Miner demonstrates that these definitions and inferences from them constitute useful bases for comparative poetics.
Download or read book Merchants and Migrants in Nineteenth century Beirut written by Leila Tarazi Fawaz and published by Cambridge, Mass. : Harvard University Press. This book was released on 1983 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Arabic Sociolinguistics written by Reem Bassiouney and published by Georgetown University Press. This book was released on 2020-04-01 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this second edition of Arabic Sociolinguistics, Reem Bassiouney expands the discussion of major theoretical approaches since the publication of the book’s first edition to account for new sociolinguistic theories in Arabic contexts with up-to-date examples, data, and approaches. The second edition features revised sections on diglossia, code-switching, gender discourse, language variation, and language policy in the region while adding a chapter on critical sociolinguistics—a new framework for critiquing the scholarly practices of sociolinguistics. Bassiouney also examines the impact of politics and new media on Arabic language. Arabic Sociolinguistics continues to be a uniquely valuable resource for understanding the theoretical framework of the language.
Download or read book Arab Rediscovery of Europe written by Ibrahim A. Abu-Lughod and published by . This book was released on 1963 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
