Browsing by Author "201-0301188"
Now showing items 1-20 of 140
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(SPRINGER HEIDELBERG, 2011-02)In order to determine to what extent a spatial random field can be characterized by its low-order distributions, we consider four models (specifically, random spatial tessellations) with exactly the same univariate and ...
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(Springer New York LLC, 2019)Cokriging allows predicting coregionalized variables from sampling information, by considering their spatial joint dependence structure. When secondary covariates are available exhaustively, solving the cokriging equations ...
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(Elsevier Ltd, 2019)© 2018 Elsevier Ltd This work addresses the problem of parameter inference in the Cox-Boolean discrete fracture network model, in which the fractures are represented by flat discs with random orientations and diameters ...
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(Elsevier, 2017)Core logging is the geological study, recording and classification of petrophysical attributes of drill hole samples, such as lithology, alteration or mineralogical assemblage. The geological logging is qualitative and ...
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(Springer, 2020)An extension of the turning arcs algorithm is proposed for simulating a random field on the two-dimensional sphere with a second-order dependency structure associated with a locally varying Schoenberg sequence. In particular, ...
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(Elsevier B.V., 2019)We introduce a novel approach to simulate Gaussian random fields defined over spheres of ℝ3. Through continuation we embed the process on the sphere in a nonstationary random field of ℝ3 to use a turning bands method. We ...
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(Springer New York LLC, 2018)Nested covariance models, defined as linear combinations of basic covariance functions, are very popular in many branches of applied statistics, and in particular in geostatistics. A notorious limit of nested models is ...
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An improved spectral turning-bands algorithm for simulating stationary vector Gaussian random fields (2016)We propose a spectral turning-bands approach for the simulation of second-order stationary vector Gaussian random fields. The approach improves existing spectral methods through coupling with importance sampling techniques. ...
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(Universidad de Chile, 2014)En la gran minería del cobre a cielo abierto son los sistemas pala-camión los ampliamente usados para realizar la labor de carguío y transporte. Actualmente este ítem abarca cerca del 50% de los costos de operación, ...
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(Universidad de Chile, 2012)Esta tesis pretende desarrollar una metodología piloto para identificar áreas favorables para la búsqueda y prospección de nuevos depósitos minerales, mediante el análisis espacial de datos en un Sistema de Información ...
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(Universidad de Chile, 2009)El objetivo del presente trabajo es apoyar el modelamiento geológico y geometalúrgico de la mina Radomiro Tomic (RT) mediante el uso de herramientas gráficas y estadísticas. El yacimiento RT es un pórfido cuprífero con ...
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(Universidad de Chile, 2012)Los prospectos Campanani, Casualidad e Inca de Oro, corresponden a extensas áreas cubiertas por depósitos y/o rocas post-mineralización. Para reconocer la existencia de cuerpos mineralizados bajo la cobertura, se llevó a ...
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(Universidad de Chile, 2015)El objetivo general del proyecto es implementar herramientas de análisis multivariable para definir tipos de alteración a partir de concentraciones de distintos elementos químicos, a modo de proponer una metodología ...
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(Springer, 2017)Sequential Gaussian simulation is one of the most widespread algorithms for simulating regionalized variables in the earth sciences. Simplicity and flexibility of this algorithm are the most important reasons that make it ...
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(MDPI, 2020)Since the Gol-Gohar iron ore mine (GGIOM), which is located in southeastern Iran, is currently one of the biggest iron mines in this region, increasing the accuracy of its mineral resources model has become a challenge for ...
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(SOUTH AFRICAN INST MINING METALLURGY, 2006-03)This work evaluates and characterizes the impact of the support size and mining dilution of a block model in the operation and selection of equipment at an open pit mine. An exploratory analysis and geostatistical modelling ...
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Boreholes plans optimization methodology combining geostatistical simulation and simulated annealing (Elsevier, 2017)Nowadays, the prospection plans have the difficult task of ensuring a more complete and rich characterization of the rock mass for the purpose of optimizing costs and increasing safety in geotechnical projects. Currently, ...
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(Springer, 2014)In most multiple-point simulation algorithms, all statistical features are provided by one or several training images (TI) that serve as a substitute for a random field model. However, because in practice the TI is always ...
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(Universidad de Chile, 2014)La planificación minera en su práctica usual, está basada en un enfoque determinista en los términos de referencia a utilizar, ignorando las incertidumbres presentes en los datos de entrada. Siendo la incertidumbre en las ...
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(SPRINGER HEIDELBERG, 2008-08)An important aspect in mineral resource evaluation is the reduction of variance when post-processing the grade distributions defined on the support (volume) of the available data into distributions defined on the support ...
