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Author: Daniel Esteban Rodríguez Salinas
Publisher:
ISBN:
Category :
Languages : es
Pages :
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La estimación de la flota de camiones en minería a cielo abierto es un proceso de planificación recurrente. Desde el punto de vista operacional, nuevos proyectos mineros, expansiones de estos mismos o fluctuaciones en el precio de los minerales implican cambios en la demanda que se verán reflejados en variaciones de los planes mineros, y por consecuencia modificaciones en la planificación del proceso de carguío y transporte de corto y mediano plazo. Por consecuencia, un impacto directo en el tamaño de la flota de camiones requerida para el transporte del material. En esta investigación se presenta un modelo analítico que permite dimensionar la flota de transporte de una operación minera a cielo abierto, incluyendo las aleatoriedades propias de los procesos de llegada de camiones y carga de camiones en un determinado punto de carga.
Author: Daniel Esteban Rodríguez Salinas
Publisher:
ISBN:
Category :
Languages : es
Pages :
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Book Description
La estimación de la flota de camiones en minería a cielo abierto es un proceso de planificación recurrente. Desde el punto de vista operacional, nuevos proyectos mineros, expansiones de estos mismos o fluctuaciones en el precio de los minerales implican cambios en la demanda que se verán reflejados en variaciones de los planes mineros, y por consecuencia modificaciones en la planificación del proceso de carguío y transporte de corto y mediano plazo. Por consecuencia, un impacto directo en el tamaño de la flota de camiones requerida para el transporte del material. En esta investigación se presenta un modelo analítico que permite dimensionar la flota de transporte de una operación minera a cielo abierto, incluyendo las aleatoriedades propias de los procesos de llegada de camiones y carga de camiones en un determinado punto de carga.
Author: Manuel Arturo Vidal Loli
Publisher:
ISBN:
Category :
Languages : es
Pages :
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Author: Víctor Barrientos
Publisher: RIL Editores
ISBN: 9560105124
Category : Science
Languages : es
Pages : 198
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Book Description
Este libro aborda distintas temáticas de mantenimiento incluyendo casos aplicados a distintas faenas mineras en Chile: ¿cómo mejorar la calidad de la información de las órdenes de trabajo?, ¿cuándo reemplazar un equipo minero?, ¿cómo mejorar la gestión de los neumáticos mineros?, ¿cuáles son las pérdidas por una pala o camión minero detenido?
Author: David Fernández López
Publisher:
ISBN:
Category :
Languages : en
Pages : 266
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Author: Commission for Environmental Cooperation (Montréal, Québec). Secretariat
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 240
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Book Description
The North American Mosaic has four overarching features. First, it is, to the extent feasible, based on comparable information on the status and trends of major indicators of the state of the environment in Canada,Mexico, and the United States. Second, the report confirms that these three countries together make up an incredibly complex, dynamic, and interconnected ecosystem in which humans play a dominant and decisive role. Third, the report raises important and sometimes disquieting questions concerning the sustainability of some current trends. Finally, the report is a reminder that our economic, social, and physical well-being are utterly dependent on the life-sustaining services provided by nature. This report emphasizes the importance of developing mutually compatible economic, social, and environmental goals and policies across the three-country region.
Author: J. David Lowell
Publisher: University of Arizona Press
ISBN: 1941451004
Category : Biography & Autobiography
Languages : en
Pages : 495
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Book Description
When seven-year-old Dave Lowell was camped out at his father’s mine in the hills of southern Arizona in 1935, he knew he had found his calling. “Life couldn’t get any better than this,” he recalls. “I didn’t know what science was, but wisps of scientific thought were already working into my plan.” So began the legendary career of the engineer, geologist, explorer, and international businessman whose life is recounted in his own words in this captivating book. An Arizona native with family roots in territorial times, Lowell grew from modest beginnings on a ranch near Nogales to become a major world figure in the fields of minerals, mining, and economic geology. He has personally discovered more copper than anyone in history and has developed multibillion-dollar gold and copper mines that have changed the economies of nations. And although he has consulted for corporations in the field of mining, he has largely operated as an independent agent and explorer, the architect of his own path and success. His life’s story unfolds in four stages: his early education in his field, on-the-job learning at sites in the United States and Mexico, development of exploration strategies, and finally, the launch of his own enterprises and companies. Recurring themes in Lowell’s life include the strict personal, ethical, and tactical policies he requires of his colleagues; his devotion to his family; and his distaste for being away from the field in a corporate office, even to this day. The magnitude of Lowell’s overall success is evident in his list of mine discoveries, as well as in his scientific achievements and the enormous respect his friends and colleagues have had for him throughout his lengthy career, which he continues to zealously pursue.
Author: Mark Davies
Publisher: Routledge
ISBN: 1134874537
Category : Foreign Language Study
Languages : en
Pages : 1457
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Book Description
A Frequency Dictionary of Spanish has been fully revised and updated, including over 500 new entries, making it an invaluable resource for students of Spanish. Based on a new web-based corpus containing more than 2 billion words collected from 21 Spanish-speaking countries, the second edition of A Frequency Dictionary of Spanish provides the most expansive and up-to-date guidelines on Spanish vocabulary. Each entry is accompanied with an illustrative example and full English translation. The Dictionary provides a rich resource for language teaching and curriculum design, while a separate CD version provides the full text in a tab-delimited format ideally suited for use by corpus and computational linguistics. With entries arranged both by frequency and alphabetically, A Frequency Dictionary of Spanish enables students of all levels to get the most out of their study of vocabulary in an engaging and efficient way.
Author: James Gleick
Publisher: Vintage
ISBN: 0307379574
Category : Science
Languages : en
Pages : 400
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Book Description
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
Author: A. M. Starfield
Publisher:
ISBN:
Category : Nature conservation
Languages : en
Pages : 280
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Book Description
In which we provide a context; A simple single-species model; An exploratory stochastic model; A complex single-species model; A system model; Variations on a theme: analytical models; Cropping strategies and linear programming; A rule-enhanced model with age-structure; Decision trees, tables, and expert systems.
Author: Gustavo Lins Ribeiro
Publisher: Routledge
ISBN: 1000184498
Category : Social Science
Languages : en
Pages : 320
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Book Description
Since its inception, anthropology's authority has been based on the assumption that it is a unified discipline emanating from the West. In an age of heightened globalization, anthropologists have failed to discuss consistently the current status of their practice and its mutations across the globe. World Anthropologies is the first book to provoke this conversation from various regions of the world in order to assess the diversity of relations between regional or national anthropologies and a contested, power-laden Western discourse. Can a planetary anthropology cope with both the 'provincial cosmopolitanism' of alternative anthropologies and the 'metropolitan provincialism' of hegemonic schools? How might the resulting 'world anthropologies' challenge the current panorama in which certain allegedly national anthropological traditions have more paradigmatic weight - and hence more power - than others? Critically examining the international dissemination of anthropology within and across national power fields, contributors address these questions and provide the outline for a veritable world anthropologies project.
