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Author: Jordi Palau
Publisher: Lulu.com
ISBN: 0244245002
Category :
Languages : en
Pages : 108
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Book Description
Author: Jordi Palau
Publisher: Lulu.com
ISBN: 0244245002
Category :
Languages : en
Pages : 108
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Book Description
Author: D. Manzanal
Publisher: IOS Press
ISBN: 1614996032
Category : Technology & Engineering
Languages : en
Pages : 3344
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Book Description
The work of geotechnical engineers contributes to the creation of safe, economic and pleasant spaces to live, work and relax all over the world. Advances are constantly being made, and the expertise of the profession becomes ever more important with the increased pressure on space and resources. This book presents the proceedings of the 15th Pan-American Conference on Soil Mechanics and Geotechnical Engineering (XV PCSMGE), held in Buenos Aires, Argentina, in November 2015. This conference, held every four years, is an important opportunity for international experts, researchers, academics, professionals and geo-engineering companies to meet and exchange ideas and research findings in the areas of soil mechanics, rock mechanics, and their applications in civil, mining and environmental engineering. The articles are divided into nine sections: transportation geotechnics; in-situ testing; geo-engineering for energy and sustainability; numerical modeling in geotechnics; foundations and ground improvement; unsaturated soil behavior; embankments, dams and tailings; excavations and tunnels; and geo-risks, and cover a wide spectrum of issues from fundamentals to applications in geotechnics. This book will undoubtedly represent an essential reference for academics, researchers and practitioners in the field of soil mechanics and geotechnical engineering. In this proceedings, approximately 65% of the contributions are in English, and 35% of the contributions are in Spanish or Portuguese.
Author: Rafael Garcia Gil
Publisher: Universal-Publishers
ISBN: 1581122950
Category : Science
Languages : en
Pages : 87
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Book Description
(Dissertation is written in Spanish.) Using PSpice of MiscroSim to simulate power converters sometimes brings awkward complications such as the simulation of real magnetic components. It deals a little bit of work to bring a good agreement between experimental and simulated results. Simulation with linear inductors or transformers does not produce good results. The reason is that real magnetic components present saturation and hysteresis, a phenomenon that characterises magnetic materials. The hysteresis or B-H loop of a magnetic component is highly dependent on frequency, waveform (not very important for ferrite material), temperature, excitation level, etc. Although PSpice includes in its magnetic library a list of non-linear components, rarely these parameters are coincident with our working conditions or simply they are not specified. In all of these cases it is necessary the modelling of non-linear magnetic cores for each particular application. Here we present a systematic procedure to obtain real PSpice parameters to model magnetic materials using the Jiles & Atherton theory. The procedure is totally general and models the static B-H loop given by any manufacturer as well as the one that can be obtained in accordance with some specific working conditions. This is really important, since it helps the designer in obtaining model parameters for any high frequency applications, which are not correctly presented in PSpice libraries. The modelled magnetic material is used for power electronics circuit simulation, which uses magnetic materials, working at frequencies in the region of kH, to construct transformers and inductors. Magnetic materials are the most critical components in electronics simulators due to their non-linear behaviour. This work examines the modelling of the magnetic core hysteresis for high-frequency applications. As example of application, a buck converter with their inductor working near saturation is implemented and their experimental waveforms are compared with the simulated ones obtained with this model. With this procedure a good concordance between experimental and simulated B-H loop is obtained and the simulation of the power converter is reached properly.
Author: Natalia Vinelli
Publisher: Mil Campanas
ISBN: 6319027932
Category : Political Science
Languages : en
Pages : 362
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Book Description
La agencia de noticias ANCLA es un modelo de resistencia cultural. Impulsada por Rodolfo Walsh, la agencia dependió del Departamento de Informaciones de Montoneros. Fue una herramienta política contra la dictadura militar. El poeta Vicente Zito Lema escribió en el prólogo que ANCLA “es un momento fundante para una épica de resistencia en el ámbito de la comunicación, que por su trágica magnificencia, por su desmesura ética merece asociarse a momentos culminantes del humanismo”. Este libro de Natalia Vinelli se reedita en un tiempo sombrío. Su versión original se publicó en 2000 bajo el sello de la mítica editorial La Rosa Blindada. Por primera vez se traduce al inglés. Son páginas movilizadoras. Porque, como decía Zito Lema, sobre Walsh, sobre Vinelli, “en tiempos bravíos, el silencio mata y la palabra quema”.
Author: Ivan Rodriguez
Publisher: Triumph Books
ISBN: 1633199681
Category : Sports & Recreation
Languages : en
Pages : 229
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Book Description
Con 14 apariciones All-Star, 13 Guantes de Oro, un Premio de Jugador Más Valioso, y, por supuesto, un anillo de la Serie Mundial, Iván "Pudge" Rodríguez ha ganado más que su lugar en el Salón de la Fama como uno de los mejores receptores de las Ligas Mayores de todos los tiempos. En Me Dicen Pudge, Rodríguez cuenta la historia de su inolvidable viaje de béisbol, desde la firma de su primer contrato profesional como un jugador de 16 años en Puerto Rico, pasando por sus años en Texas, Detroit, y más allá, hasta la etapa de la Serie Mundial en Miami, y detrás de las puertas de la oficina de los Texas Rangers. Los logros de Rodríguez, sus compañeros de equipo, y sus mayores desafíos reciben tiempo en el centro de atención en esta memoria original de una vida y carrera en el Salón de la Fama. With 14 All-Star appearances, 13 Gold Gloves, a Most Valuable Player Award, and, of course, a World Series ring, Ivan "Pudge" Rodriguez has more than earned his spot in Cooperstown as one of the best Major League catchers of all time. In They Call Me Pudge, Rodriguez tells the story of his unforgettable baseball journey, from signing his first professional contract as a 16 year-old in Puerto Rico, to his years in Texas, Detroit, and beyond, to the World Series stage in Miami, and behind the doors of the Texas Rangers front office. Rodriguez's accomplishments, his teammates, and his biggest challenges all receive time in the spotlight in this refreshing memoir of a life and Hall-of-Fame career.
Author: Jordi Villar Lleonart
Publisher: Libros de Cabecera
ISBN: 8494907964
Category : Business & Economics
Languages : en
Pages : 197
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Book Description
El éxito de los vendedores depende de su conocimiento de los procesos automáticos de toma de decisiones y de su capacidad para influir en ellos. La venta depende del filtro que el cliente utilice para juzgar al vendedor y a su producto. En este libro aprenderás cómo funciona el cerebro de los clientes a la hora de tomar decisiones, es decir, qué hace que un cliente tome una decisión u otra, y por qué a veces confía más en un vendedor que en otro; y qué decir, cómo y cuándo para condicionar esos automatismos mentales a tu favor y aumentar significativamente tus probabilidades de conseguir un sí.
Author: Barry Schwartz
Publisher: Harper Collins
ISBN: 0061748994
Category : Psychology
Languages : en
Pages : 308
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Book Description
Whether we're buying a pair of jeans, ordering a cup of coffee, selecting a long-distance carrier, applying to college, choosing a doctor, or setting up a 401(k), everyday decisions—both big and small—have become increasingly complex due to the overwhelming abundance of choice with which we are presented. As Americans, we assume that more choice means better options and greater satisfaction. But beware of excessive choice: choice overload can make you question the decisions you make before you even make them, it can set you up for unrealistically high expectations, and it can make you blame yourself for any and all failures. In the long run, this can lead to decision-making paralysis, anxiety, and perpetual stress. And, in a culture that tells us that there is no excuse for falling short of perfection when your options are limitless, too much choice can lead to clinical depression. In The Paradox of Choice, Barry Schwartz explains at what point choice—the hallmark of individual freedom and self-determination that we so cherish—becomes detrimental to our psychological and emotional well-being. In accessible, engaging, and anecdotal prose, Schwartz shows how the dramatic explosion in choice—from the mundane to the profound challenges of balancing career, family, and individual needs—has paradoxically become a problem instead of a solution. Schwartz also shows how our obsession with choice encourages us to seek that which makes us feel worse. By synthesizing current research in the social sciences, Schwartz makes the counter intuitive case that eliminating choices can greatly reduce the stress, anxiety, and busyness of our lives. He offers eleven practical steps on how to limit choices to a manageable number, have the discipline to focus on those that are important and ignore the rest, and ultimately derive greater satisfaction from the choices you have to make.
Author: José de Lorenzo
Publisher:
ISBN:
Category : Naval art and science
Languages : es
Pages : 640
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Book Description
Author: N.P. López-Acosta
Publisher: IOS Press
ISBN: 1643680315
Category : Technology & Engineering
Languages : en
Pages : 3006
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Book Description
The first Pan-American Conference on Soil Mechanics and Geotechnical Engineering (PCSMGE) was held in Mexico in 1959. Every 4 years since then, PCSMGE has brought together the geotechnical engineering community from all over the world to discuss the problems, solutions and future challenges facing this engineering sector. Sixty years after the first conference, the 2019 edition returns to Mexico. This book, Geotechnical Engineering in the XXI Century: Lessons learned and future challenges, presents the proceedings of the XVI Pan-American Conference on Soil Mechanics and Geotechnical Engineering (XVI PCSMGE), held in Cancun, Mexico, from 17 – 20 November 2019. Of the 393 full papers submitted, 335 were accepted for publication after peer review. They are included here organized into 19 technical sessions, and cover a wide range of themes related to geotechnical engineering in the 21st century. Topics covered include: laboratory and in-situ testing; analytical and physical modeling in geotechnics; numerical modeling in geotechnics; unsaturated soils; soft soils; foundations and retaining structures; excavations and tunnels; offshore geotechnics; transportation in geotechnics; natural hazards; embankments and tailings dams; soils dynamics and earthquake engineering; ground improvement; sustainability and geo-environment; preservation of historic sites; forensics engineering; rock mechanics; education; and energy geotechnics. Providing a state-of-the-art overview of research into innovative and challenging applications in the field, the book will be of interest to all those working in soil mechanics and geotechnical engineering. In this proceedings, 58% of the contributions are in English, and 42% of the contributions are in Spanish or Portuguese.
Author: J.A. Llanos
Publisher: CRC Press
ISBN: 9789058095343
Category : Technology & Engineering
Languages : en
Pages : 1012
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Book Description
During the life of a dam, changes in safety standards, legislation and land use will inevitably occur, and functional deterioration may also appear. To meet these challenges, these Proceedings from a panel of international experts assess, define and re-evaluate the design criteria for the construction of dams and the many attendant issues in on-going maintenance and management. Authors include international specialists: academics, professionals and those in local government, utilities and suppliers. Practitioners from these same fields will find the book a useful tool in acquiring a comprehensive knowledge of managing and retrofitting dams, so that they can continue to meet society's needs.
