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Informacion Sobre Propagacion De Las Ondas Radioelectricas Para El Diseno De Enlaces Terrenales Punto A Punto
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Book Synopsis Información sobre propagación de las ondas radioeléctricas para el diseño de enlaces terrenales punto a punto by :
Download or read book Información sobre propagación de las ondas radioeléctricas para el diseño de enlaces terrenales punto a punto written by and published by . This book was released on 2008 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Análisis y diseño de enlaces punto a punto vía microondas terrestres by :
Download or read book Análisis y diseño de enlaces punto a punto vía microondas terrestres written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Se presenta el proyecto sistema de análisis y diseño de enlaces punto a punto. El objetivo es presentar al usuario un software que analice la propagación de la señal en este tipo de enlaces y diseñe las alturas de las antenas de transmisión y recepción. El software cuenta con una interfaz amigable con el usuario e incluye un sistema de ayuda en lo que respecta al manejo y teoría en la que se apoya el programa. El programa se desarrolla en MATLAB, con el propósito de hacerlo accesible y con un ambiente amigable al estudiante deseoso de aprender de este tema. El ambiente amigable del software desarrollado en MATLAB se logró con la herramienta GUIDE. El sistema de ayuda del programa se desarrolla en Front Page. Este proyecto se ha desarrollado debido a que no existe un programa en su tipo con un enfoque didáctico, sino los existentes son de tipo comercial, ejemplos de ellos son ATDI Radio Planning Software [23] y TCS Consultants [22]. De tal forma que aquellos cuyo interés en el tema sea el aprender, pueden contar con esta herramienta. En el capítulo 1 se da una introducción a los enlaces punto a punto, se exponen las definiciones básicas para el desarrollo del tema. En el capítulo 2 se exponen las bases teóricas sobre el análisis y diseño de enlaces punto a punto. Se consideran dentro del análisis las pérdidas de transmisión en los enlaces punto a punto y las ganancias. En la parte de diseño se indican y se describen los pasos más importantes. En el capítulo 3 se muestra el software desarrollado, se indican las herramientas utilizadas, la estructura y la manera en que se hizo el programa. Se indican también los cálculos hechos en el programa y la base teórica que los soporta. En el capítulo 4 se valida el programa. Se hacen pruebas al programa y en función de los resultados se comprueba su validez. Las pruebas están basadas en comparaciones con fuentes bibliográficas y cálculos hechos con calculadora. El capítulo 5 está dedicado a las conclusiones y comentarios.
Book Synopsis Radiocomunicaciones by : Francisco Ramos Pascual
Download or read book Radiocomunicaciones written by Francisco Ramos Pascual and published by . This book was released on 2007-10 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hoy en día los sistemas inalámbricos nos rodean por todas partes. A los ya habituales sistemas de telefonía móvil, se unen las redes de datos inalámbricas, la televisión digital terrestre o los radioenlaces punto a punto. Para el correcto funcionamiento de estos sistemas resulta crucial un diseño adecuado del interfaz radioeléctrico. El diseño de radioenlaces es una disciplina que involucra toda una serie de cuestiones tales como la elección de la banda de frecuencias, el tipo de antenas y los equipos de radiocomunicación, el cálculo del balance de potencias, la estimación de los niveles de ruido e interferencia o el conocimiento de las distintas modalidades y fenómenos de propagación radioeléctrica, entre otras. En este libro se recoge todo el material técnico que se necesita para el diseño práctico de radioenlaces, proporcionándose a su vez referencias adicionales con las que el lector podrá acceder a información más específica en el caso de diseños más complejos. El libro dispone de cientos de preguntas y ejercicios prácticos de autoevaluación con los que se puede comprobar la correcta asimilación de los conceptos teóricos. Cada capítulo comienza con una serie de fichas temáticas que explican los conceptos básicos que deben conocerse. A continuación, se proponen preguntas teóricas de autoevaluación y ejercicios prácticos, todos ellos con su correspondiente solución. Por último, al final del libro se puede encontrar un anexo resumen donde se incluye un completo formulario, así como tablas y gráficas de ayuda. A diferencia del resto de libros existentes en la materia, no se trata de una obra de lectura, sino más bien de un material de trabajo y de apoyo en las labores prácticas de diseño de radioenlaces y sistemas de radiocomunicación en general, es decir, todos aquellos que disponen de antenas y efectúan la comunicación por medios radioeléctricos. Por ello, se presupone que el lector ya posee un conocimiento previo de la materia, sirviendo esta obra como elemento de refuerzo y manual de trabajo.
Book Synopsis Propagación de RF en las bandas: LF, MF, HF, VHF, UHF y VHF. by :
Download or read book Propagación de RF en las bandas: LF, MF, HF, VHF, UHF y VHF. written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: En la presente investigación se da una explicación de los aspectos generales referentes a la Teoría de la Propagación de Radio Frecuencia, incluyendo los modelos de predicción de pérdidas. Para tal efecto, se parte de lo general a lo particular. El primer objetivo de este proyecto es el estudio de la propagación de RF desde los mecanismos básicos de propagación, hasta las características correspondientes a las bandas de frecuencia estudiadas, y un estudio completo sobre los modelos de propagación más importantes que sirven para caracterizar el canal de comunicación. La primera parte consiste en una investigación sobre los tipos de ondas y sus características vistos en el capítulo 1, los mecanismos básicos que intervienen en la propagación a través de la atmósfera terrestre explicados en el capítulo 2; posteriormente se presenta un estudio de las propiedades de las diferentes capas de la atmósfera y de cómo se comportan estas con las ondas de Radio Frecuencia vistas en el capítulo 3, así como también de las diferentes ondas que se pueden clasificar, sus principales características de propagación; esto con el objetivo de que la información sirva de preámbulo para poder entender con mayor facilidad lo que pasa cuando se propagan ondas por el especio terrestre. Después de entender la propagación de las ondas en el espacio terrestre, se hace una descripción y se ahonda en el tema de Propagación de la Radio Frecuencia correspondiente a cada una de las bandas de frecuencias que se explican a detalle en el capítulo 4. A partir de este punto se hace un análisis completo sobre los modelos más importantes de predicción de pérdidas por trayectoria presentados en el capítulo 5 y que son de gran utilidad para analizar el canal de comunicación. El objetivo final, es la presentación de un software didáctico que simule las perdidas por trayectoria en base a cuatro modelos de propagación analizados en este proyecto los cuales son: Modelo del Espacio Libre o modelo de Friis, Modelo de.
Book Synopsis Información de propagación de las ondas radioeléctricas para la predicción de las comunicaciones en los trayectos tierra-espacio by :
Download or read book Información de propagación de las ondas radioeléctricas para la predicción de las comunicaciones en los trayectos tierra-espacio written by and published by . This book was released on 1996 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis VISION GERENCIAL. PROSPECTIVA DE GESTION Y ESTRATEGIA EMPRESARIAL. by : Alix Fuentes
Download or read book VISION GERENCIAL. PROSPECTIVA DE GESTION Y ESTRATEGIA EMPRESARIAL. written by Alix Fuentes and published by Lulu.com. This book was released on 2012-02-02 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: Este libro ha sido diseñado y construido con el método lógico, analítico y reflexivo, dispuesto con tácticas en el aprendizaje significativo en diversas formas y antecedentes de contenido prospectivo, aplicado al sistema empresarial, con una visión desde el punto de vista de la gestión empresarial. Su estructuración tiende a fundamentar lineamientos básicos, para aplicar los requisitos mínimos y necesarios, de la teoría prospectiva en el estudio de las ideas en cualquier área del conocimiento, a través de la investigación académica y la extensión en la praxis empresarial. Gestiona contenidos en aplicaciones al sistema empresarial, buscando anticiparse proactivamente al éxito, lo que garantiza la apropiación de las acciones gerenciales, el liderazgo y el poder, requeridos en la nueva reorganización global. Reordenamiento que incorpore el humanismo y la tecnología al anhelado desarrollo digno y feliz de la humanidad. Esta obra está dirigida a estudiantes universitarios en programas académicos presenciales o de educación a distancia en ciencias económicas, administrativas, sociales y humanísticas.
Download or read book The Information written by James Gleick and published by Vintage. This book was released on 2011-03-01 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the bestselling author of the acclaimed Chaos and Genius comes a thoughtful and provocative exploration of the big ideas of the modern era: Information, communication, and information theory. Acclaimed science writer James Gleick presents an eye-opening vision of how our relationship to information has transformed the very nature of human consciousness. A fascinating intellectual journey through the history of communication and information, from the language of Africa’s talking drums to the invention of written alphabets; from the electronic transmission of code to the origins of information theory, into the new information age and the current deluge of news, tweets, images, and blogs. Along the way, Gleick profiles key innovators, including Charles Babbage, Ada Lovelace, Samuel Morse, and Claude Shannon, and reveals how our understanding of information is transforming not only how we look at the world, but how we live. A New York Times Notable Book A Los Angeles Times and Cleveland Plain Dealer Best Book of the Year Winner of the PEN/E. O. Wilson Literary Science Writing Award
Book Synopsis Building Wireless Community Networks by : Rob Flickenger
Download or read book Building Wireless Community Networks written by Rob Flickenger and published by "O'Reilly Media, Inc.". This book was released on 2003 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Building Wireless Community Networks is about getting people online using wireless network technology. The 802.11b standard (also known as WiFi) makes it possible to network towns, schools, neighborhoods, small business, and almost any kind of organization. All that's required is a willingness to cooperate and share resources. The first edition of this book helped thousands of people engage in community networking activities. At the time, it was impossible to predict how quickly and thoroughly WiFi would penetrate the marketplace. Today, with WiFi-enabled computers almost as common as Ethernet, it makes even more sense to take the next step and network your community using nothing but freely available radio spectrum. This book has showed many people how to make their network available, even from the park bench, how to extend high-speed Internet access into the many areas not served by DSL and cable providers, and how to build working communities and a shared though intangible network. All that's required to create an access point for high-speed Internet connection is a gateway or base station. Once that is set up, any computer with a wireless card can log onto the network and share its resources. Rob Flickenger built such a network in northern California, and continues to participate in network-building efforts. His nuts-and-bolts guide covers: Selecting the appropriate equipment Finding antenna sites, and building and installing antennas Protecting your network from inappropriate access New network monitoring tools and techniques (new) Regulations affecting wireless deployment (new) IP network administration, including DNS and IP Tunneling (new) His expertise, as well as his sense of humor and enthusiasm for the topic, makes Building Wireless Community Networks a very useful and readable book for anyone interested in wireless connectivity.
Book Synopsis Phosphorus in Environmental Technology by : E. Valsami-Jones
Download or read book Phosphorus in Environmental Technology written by E. Valsami-Jones and published by IWA Publishing. This book was released on 2004-05-31 with total page 681 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phosphorus in Environmental Technology: Principles and Applications, provides a definitive and detailed presentation of state-of-the-art knowledge on the environmental behaviour of phosphorus and its applications to the treatment of waters and soils. Special attention is given to phosphorus removal for recovery technologies, a concept that has emerged over the past 5-6 years. The book features an all-encompassing approach: the fundamental science of phosphorus (chemistry, geochemistry, mineralogy, biology), key aspects of its environmental behaviour and mobility, industrial applications (treatment, removal, recovery) and the principles behind such applications, novel biotechnologies and, importantly, it also addresses socio-economic issues which often influence implementation and the ultimate success of any new technology. A detailed subject index helps the reader to find their way through the different scientific and technological aspects covered, making it an invaluable reference work for students, professionals and consultants dealing with phosphorus-related environmental technologies. State-of-the-art knowledge on the behaviour of phosphorus and its applications to environmental science and technology. Covers all aspects of phosphorus in the environment, engineered and biological systems; an interdisciplinary text.
Book Synopsis Transport in Plants I by : M.H. Zimmermann
Download or read book Transport in Plants I written by M.H. Zimmermann and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt: When WILHELM RUHLAND developed his plan for an Encyclopedia of Plant Physiol ogy more than three decades ago, biology could still be conveniently subdivided into classical areas. Even within plant physiology, subdivisions were not too difficult to make, and general principles could be covered sufficiently in the two introductory volumes of the Encyclopedia on the physical and chemical basis of cell biology. But the situation changed rapidly even during the 12-year publication period of the Encyclopedia (1955-1967). The new molecular direction of genetics and structural research on biopolymers had an integrating effect on all other biological fields, including plant physiology, and it became increasingly difficult to keep previously distinct areas separated. RUHLAND'S overall plan included 18 volumes and about 22,000 pages. It covered the entire field of plant physiology, in most cases from the very beginning. But, as each volume appeared, it was clear that its content would soon be outdated.
Download or read book Discovering Light written by Sara Aissati and published by . This book was released on 2021-09-30 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: What is light? Where are optics and photonics present in our lives and in nature? What lies behind different optical phenomena? What is an optical instrument? How does the eye resemble an optical instrument? How can we explain human vision? This book, written by a group of young scientists, answers these questions and many more.
Download or read book Conditions in Puerto Rico written by and published by . This book was released on 1899 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Botany of Mangroves by : P. B. Tomlinson
Download or read book The Botany of Mangroves written by P. B. Tomlinson and published by Cambridge University Press. This book was released on 1994 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: A concise, descriptive overview of mangrove plants, with emphasis on individual species.
Book Synopsis National cyber security : framework manual by : Alexander Klimburg
Download or read book National cyber security : framework manual written by Alexander Klimburg and published by . This book was released on 2012 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt: "What, exactly, is 'National Cyber Security'? The rise of cyberspace as a field of human endeavour is probably nothing less than one of the most significant developments in world history. Cyberspace already directly impacts every facet of human existence including economic, social, cultural and political developments, and the rate of change is not likely to stop anytime soon. However, the socio-political answers to the questions posed by the rise of cyberspace often significantly lag behind the rate of technological change. One of the fields most challenged by this development is that of 'national security'. The National Cyber Security Framework Manual provides detailed background information and in-depth theoretical frameworks to help the reader understand the various facets of National Cyber Security, according to different levels of public policy formulation. The four levels of government--political, strategic, operational and tactical/technical--each have their own perspectives on National Cyber Security, and each is addressed in individual sections within the Manual. Additionally, the Manual gives examples of relevant institutions in National Cyber Security, from top-level policy coordination bodies down to cyber crisis management structures and similar institutions."--Page 4 of cover.
Book Synopsis Ancient Scripts and Phonological Knowledge by : D. Gary Miller
Download or read book Ancient Scripts and Phonological Knowledge written by D. Gary Miller and published by John Benjamins Publishing Company. This book was released on 1994 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study investigates the properties of several ancient syllabic and linear segmental scripts to make explicit the aspects of linguistic knowledge they attempt to represent. Some recent experimental work suggests that nonliterate speakers do not have segmental knowledge and that only syllabic knowledge is 'real' or accessible, whence the ubiquity of syllabaries. Miller disputes this by showing that such tests do not distinguish relevant types of knowledge, and that linguistic analysis of the ordering and writing conventions of early Western scripts corroborates the evidence from language acquisition, use, and change for segment awareness. By coding segments, the ancient syllabaries represented more phonological knowledge than the alphabet, which was a poor compromise between the vowelless West Semitic scripts and the vowel-redundant syllabic scripts. A wide range of information about early scripts and their development is combined with a new theory of the syllable as 'Sonority Phrase'. The book's value is further enhanced by thorough discussion of the issues from a broad range of theoretical and applied viewpoints, including language play and change, cognition, literacy, and cultural history.
Book Synopsis Engineer's dictionary Spanish-English and English-Spanish by : Louis A. Robb
Download or read book Engineer's dictionary Spanish-English and English-Spanish written by Louis A. Robb and published by . This book was released on 1987 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Media Education in Latin America by : Julio-César Mateus
Download or read book Media Education in Latin America written by Julio-César Mateus and published by Routledge. This book was released on 2019-07-22 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a systematic study of media education in Latin America. As spending on technological infrastructure in the region increases exponentially for educational purposes, and with national curriculums beginning to implement media related skills, this book makes a timely contribution to new debates surrounding the significance of media literacy as a citizen’s right. Taking both a topical and country-based approach, authors from across Latin America present a comprehensive perspective of the region and address issues such as the political and social contexts in which media education is based, the current state of educational policies with respect to media, organizations and experiences that promote media education.
