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Geostatistics in the presence of geological boundaries: Exploratory tools for contact analysis
(Elsevier, 2020)
Identification and categorization of geological, geotechnical, or geometallurgical domains is a common practice in the modeling of mineral deposits, in order to account for the controls exerted by categorical variables ...
Geostatistical estimation of mineral resources with soft geological boundaries: a comparative study
(SOUTH AFRICAN INST MINING METALLURGY, 2006-08)
Mineral resource evaluation requires defining geological domains that differentiate the types of mineralogy, alteration and lithology. Usual practice is to consider the domain boundaries as hard, i.e. data from across the ...
Importance of event detection and nonlinear characterization of dynamical systems with discontinuity boundary
(2021-01-01)
In this study, the response of a dynamical system with an increasingly stiff freeplay nonlinearity is investigated. Numerical simulations are carried out on a forced Duffing oscillator with low, intermediate, and hard ...
Incorporating the uncertainty in geological boundaries into mineral resources evaluation
(2007)
Geological modelling is a key step prior to grade estimation in a mineral deposit and consists of a deterministic partitioning of the deposit into sub-domains called 'geological units', each with relatively homogeneous ...
Pattern equation method for the solution of electromagnetic scattering by axially-symmetric particles with complex anisotropic surface impedanceMétodo de ecuación por patrones para la solución de scattering electromagnético por partículas axialmente simétricas con impedancia de superficie anisotrópica compleja
(Universidad de Costa Rica, Centro de Investigación en Matemática Pura y Aplicada (CIMPA), 2013)
Numerical calculation of the electrokinetic mobility of concentrated suspensions of soft particles
(Academic Press Inc Elsevier Science, 2006-12)
The electrophoretic mobility of spherical soft particles in concentrated colloidal suspensions is numerically calculated. The particle is modeled as a hard core coated with an ion-penetrable membrane bearing a uniform ...
Symbiotic stars in X-rays
(Edp Sciences S A, 2012-11-27)
Until recently, symbiotic binary systems in which a white dwarf accretes from a red giant were thought to be mainly a soft X-ray population. Here we describe the detection with the X-ray Telescope (XRT) on the Swift satellite ...
Simulation of geological domains using the plurigaussian model: New developments and computer programs
(PERGAMON-ELSEVIER SCIENCE LTD, 2007-09)
The plurigaussian model is currently used for simulating geological domains (facies) in petroleum reservoirs and mineral deposits, with the aim of assessing the uncertainty in the domain boundaries and of improving the ...
Simulation of geological domains using the plurigaussian model: New developments and computer programs
(2007)
The plurigaussian model is currently used for simulating geological domains (facies) in petroleum reservoirs and mineral deposits, with the aim of assessing the uncertainty in the domain boundaries and of improving the ...