Browsing by Author "e824fdf3-2a97-412b-90d7-c4e6b5b750be"

Now showing items 1-7 of 7

    • A path-level exact parallelization strategy for sequential simulation 
      Peredo, Oscar; Baeza, Daniel; Ortiz, Julián; Herrero, José (Elsevier Ltd, 2018)
      Sequential Simulation is a well known method in geostatistical modelling. Following the Bayesian approach for simulation of conditionally dependent random events, Sequential Indicator Simulation (SIS) method draws simulated ...
    • An LSTM Approach for SAG Mill Operational Relative-Hardness Prediction 
      Ávalos, Sebastián; Kracht Gajardo, Willy; Ortiz, Julian (MDPI, 2020)
      Ore hardness plays a critical role in comminution circuits. Ore hardness is usually characterized at sample support in order to populate geometallurgical block models. However, the required attributes are not always available ...
    • Antithetic random fields applied to mine planning under uncertainty 
      Nelis, Gonzalo; Ortiz, Julian; Morales, Nelson (Elsevier Ltd, 2018)
      Traditional practice in mine planning often relies on estimation techniques that fail to account for the intrinsicuncertainty of geology and grades, which may have significant consequences in the mine operation. Dealing ...
    • Copper mining: 100% solar electricity by 2030? 
      Haas, Jannik; Moreno Leiva, Simón; Junne, Tobías; Chen, Po-Jung; Pamparana, Giovanni; Nowak, Wolfgang; Kracht Gajardo, Willy; Ortiz, Julian (Elsevier, 2020)
      Extracting copper is energy-intensive. At the same time, copper is a key material for building the energy systems of the future. Both facts call for clean copper production. The present work addresses the greenhouse gas ...
    • Geological Facies Recovery Based on Weighted l(1)-Regularization 
      Calderón, Hernán; Santibáñez, Felipe; Silva Sánchez, Jorge; Ortiz, Julian; Egaña, Álvaro (Springer, 2020)
      A weighted compressed sensing (WCS) algorithm is proposed for the problem of channelizetl facies reconstruction from pixel-based measurements. This strategy integrates information from: (i) image structure in a transform ...
    • Optimization of a SAG mill energy system: integrating rock hardness, solar irradiation, climate change, and ... 
      Ortiz, Julian; Kracht, Willy; Pamparana Manns, Giovanni; Haas, Jannik (Springer, 2020)
      Integration of renewable energy into mining and processing operations is becoming necessary as part of a strategy towards sustainability in the minerals industry. A solar photovoltaic plant along with a battery energy ...
    • Sampling Strategies for Uncertainty Reduction in Categorical Random Fields: Formulation, Mathematical ... 
      Santibañez, Felipe; Silva, Jorge F.; Ortiz, Julián M. (Springer Verlag, 2019)
      © 2019, International Association for Mathematical Geosciences.The task of optimal sampling for the statistical simulation of a discrete random field is addressed from the perspective of minimizing the posterior uncertainty ...