Desde la aparición de la primera edición de este libro, la nube se ha desplegado a lo largo y ancho del mundo con innumerables proveedores de servicios y miles de millones de usuarios en sus diferentes modelos de servicios. En la actualidad, se puede considerar que la nube se encuentra en todas partes y sus aplicaciones se han convertido en servicios esenciales como la luz, el agua o el petróleo (gas o carburantes) y de uso diario tanto por usuarios personales como por organizaciones y empresas. Así podemos ver productos de la nube de uso diario como Gmail, Google Maps, Spotify, Netflix, Dropbox, WhatsApp, Zoom, etc. La nube nos brinda la oportunidad de acceder a contenidos, desde prácticamente cualquier lugar y con un crecimiento continuo. Este libro se ha marcado como objetivo principal seguir con los lineamientos de la primera edición y actualizar su contenido: •Añadir el estudio de la evolución y mejora de características de la computación en la nube. •Incluir las predicciones que se resaltan como las más prometedoras en las tecnologías disruptivas actuales y emergentes. No espere más, hágase con su ejemplar y conozca los pilares fundamentales de la computación de la nube en la actualidad.

A thorough exposition of quantum computing and the underlying concepts of quantum physics, with explanations of the relevant mathematics and numerous examples.

Organic Chemistry, Ninth Edition gives students a contemporary overview of organic principles and the tools for organizing and understanding reaction mechanisms and synthetic organic chemistry with unparalleled and highly refined pedagogy. This text presents key principles of organic chemistry in the context of fundamental reasoning and problem solving. Authored to complement how students use a textbook today, new Problem-Solving Strategies, Partially Solved Problems, Visual Reaction Guides and Reaction Starbursts encourage students to use the text before class as a primary introduction to organic chemistry as well as a comprehensive study tool for working problems and/or preparing for exams.

By the year 2020, the basic memory components of a computer will be the size of individual atoms. At such scales, the current theory of computation will become invalid. "Quantum computing" is reinventing the foundations of computer science and information theory in a way that is consistent with quantum physics - the most accurate model of reality currently known. Remarkably, this theory predicts that quantum computers can perform certain tasks breathtakingly faster than classical computers – and, better yet, can accomplish mind-boggling feats such as teleporting information, breaking supposedly "unbreakable" codes, generating true random numbers, and communicating with messages that betray the presence of eavesdropping. This widely anticipated second edition of Explorations in Quantum Computing explains these burgeoning developments in simple terms, and describes the key technological hurdles that must be overcome to make quantum computers a reality. This easy-to-read, time-tested, and comprehensive textbook provides a fresh perspective on the capabilities of quantum computers, and supplies readers with the tools necessary to make their own foray into this exciting field. Topics and features: concludes each chapter with exercises and a summary of the material covered; provides an introduction to the basic mathematical formalism of quantum computing, and the quantum effects that can be harnessed for non-classical computation; discusses the concepts of quantum gates, entangling power, quantum circuits, quantum Fourier, wavelet, and cosine transforms, and quantum universality, computability, and complexity; examines the potential applications of quantum computers in areas such as search, code-breaking, solving NP-Complete problems, quantum simulation, quantum chemistry, and mathematics; investigates the uses of quantum information, including quantum teleportation, superdense coding, quantum data compression, quantum cloning, quantum negation, and quantum cryptography; reviews the advancements made towards practical quantum computers, covering developments in quantum error correction and avoidance, and alternative models of quantum computation. This text/reference is ideal for anyone wishing to learn more about this incredible, perhaps "ultimate," computer revolution. Dr. Colin P. Williams is Program Manager for Advanced Computing Paradigms at the NASA Jet Propulsion Laboratory, California Institute of Technology, and CEO of Xtreme Energetics, Inc. an advanced solar energy company. Dr. Williams has taught quantum computing and quantum information theory as an acting Associate Professor of Computer Science at Stanford University. He has spent over a decade inspiring and leading high technology teams and building business relationships with and Silicon Valley companies. Today his interests include terrestrial and Space-based power generation, quantum computing, cognitive computing, computational material design, visualization, artificial intelligence, evolutionary computing, and remote olfaction. He was formerly a Research Scientist at Xerox PARC and a Research Assistant to Prof. Stephen W. Hawking, Cambridge University.

El crecimiento continuo, en tamaño y complejidad, de la infraestructura de TI que soporta los sistemas de información, ha llamado la atención, a la necesidad de simplificar la administración y reducir los costes asociados a su mantenimiento, y más recientemente, a la necesidad de reducir el impacto ambiental causado, principalmente, por el excesivo consumo de energía. Utility computing es una enfoque en el que los servicios son ofrecidos bajo demanda, de la misma forma que la electricidad y telecomunicaciones. Esta es una tendencia anunciada y buscada desde los principios de la informática, ya que libera a los usuarios de la complejidad de tener que administrar los recursos computacionales y de los costes de mantener una infraestructura sobredimensionada para atender posibles picos de demanda, limitándose a utilizar los recursos necesarios en cada momento y pagando sólo por lo que fue utilizado. La evolución de las tecnologías como grid computing, clusters computacionales, virtualización, web services y arquitectura orientada a servicios, así como el aumento de la capacidad y la reducción de los costes de las redes de ordenadores y de internet, permitieron llegar a un nueva enfoque, que supera el concepto tradicional de utility computing, la cual es conocida como computación en nube, o cloud computing.

This revised edition incorporates the latest discoveries in the rapidly changing fields of neuroscience and physiological psychology and offers the most comprehensive and integrative coverage of research and theory in contemporary behavioural neuroscience.