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Heritage stones are building and ornamental stones that have special significance in human culture. The papers in this volume discuss a wide variety of such materials, including stones from Europe, Asia, North and South America, Africa and Australia. Igneous (basalt, porphyry, granite), sedimentary (sandstone, limestone) and metamorphic (marble, quartzite, gneiss, soapstone, slate) stones are featured. These have been utilized over long periods of time for a wide range of uses contributing to the historic fabric of the built environment. Many of these stones are of international significance, and so are potential Global Heritage Stone Resources, that is stones that have the requisite qualities for international recognition by the Heritage Stones Subcommission of the International Union of Geological Sciences. The papers bring together diverse information on these stones ranging from their geological setting and quarry locations to mechanical properties, current availability, and uses over time. As such the papers can serve as an entry into the literature on these important stones.
A comprehensive and hands-on introduction to the core concepts, methods, and applications of agent-based modeling, including detailed NetLogo examples. The advent of widespread fast computing has enabled us to work on more complex problems and to build and analyze more complex models. This book provides an introduction to one of the primary methodologies for research in this new field of knowledge. Agent-based modeling (ABM) offers a new way of doing science: by conducting computer-based experiments. ABM is applicable to complex systems embedded in natural, social, and engineered contexts, across domains that range from engineering to ecology. An Introduction to Agent-Based Modeling offers a...
Nuestro personaje de portada, Julia Butterfly Hill, podría parecer extremo. ¿Una mujer que se subió a un árbol durante dos años para finalmente evitar que lo talaran? ¿Por qué ella y no otros de los cientos de ecologistas que en todo el mundo se comprometen en acciones menos mediáticas pero quizá más profundas? Creemos que el perfil que ha escrito Tracy Barnett cuenta una historia que a todos puede inspirar: la de una persona normal que se indigna ante el mal, decide hacer lo que puede y convierte su acción en algo extraordinario. En el contexto de los Juegos Panamericanos de 2011 en Guadalajara, Vanesa Robles escribió un espléndido reportaje sobre las personas que cotidianamente hacen deporte en condiciones precarias, al margen de las grandes inversiones en infraestructura deportiva que se hicieron en la ciudad. Y Juan Carlos Núñez presenta en Colloquium una entrevista con Emilio Martínez Navarro, experto en ética profesional, uno de los temas prioritarios de una revista para profesionales. (Magis) (ITESO)
Xipe Totek es la epifanía que sugiere la presencia seductora del espíritu en la materia.Sugiere también la repetición kierkegaardiana. Renaciendo asciende el sol en el firmamento. Y dentro de la piel el Dios mira, vive y siente. (ITESO)