Navegação Engenharias por Autor "Hundelshaussen Rubio, Ricardo José"

Resultados 1-4 de 4

    • A geostatistical framework for estimating compositional data avoiding bias in back-transformation 

      Hundelshaussen Rubio, Ricardo José; Costa, Joao Felipe Coimbra Leite; Bassani, Marcel Antônio Arcari (2016) [Artigo de periódico]
      Estimation of some mineral deposits involves chemical species or a granulometric mass balance that constitute a closed constant sum (e.g., 100%). Data that add up to a constant are known as compositional data (CODA). ...

    • How the use of stratigraphic coordinates improves grade estimation 

      Hundelshaussen Rubio, Ricardo José; Koppe, Vanessa Cerqueira; Costa, Joao Felipe Coimbra Leite; Cherchenevski, Pablo Koury (2015) [Artigo de periódico]
      Some mineral deposits show mineralization along layers. These layers may pass through several subsequent geological events such as folding and/or severe erosional processes. Grades within these deposits tend to be correlated ...

    • Slope stability analysis at highway BR-153 using numerical models 

      Hundelshaussen Rubio, Ricardo José; Flórez Gálvez, Jorge Hernán; Zingano, Andre Cezar (2016) [Artigo de periódico]
      An existing cut slope on Highway RS-471/BR-153 is studied. The slope is composed of the Serra Geral Formation's material: a highly altered volcanic breccia and above it a slightly altered and very fractured rhyolite. A ...

    • The effect of accumulation in 2D estimates in phosphatic ore 

      Marques, Diego Machado; Hundelshaussen Rubio, Ricardo José; Costa, Joao Felipe Coimbra Leite; Silva, Evangelina Maria Apparicio da (2014) [Artigo de periódico]
      The geological modeling of stratiform deposits can become very complex, often making use of geological envelopes of small thickness and requiring the use of subblocks (based on Cartesian coordinates) to produce a coherent ...