Browsing by Title Artículos de revistas

Now showing items 2662-2681 of 7549

    • Fault-controlled development of shallow hydrothermal systems: Structural and mineralogical insights from ... 
      Roquer, Tomás; Arancibia, Gloria; Rowland, Julie; Iturrieta, Pablo; Morata Céspedes, Diego; Cembrano, José (Elsevier, 2017)
      Paleofluid-transporting systems can be recognized as meshes of fracture-filled veins in eroded zones ofextinct hydrothermal systems. Here we combined meso-microstructural analysis of 107 fractures andmechanical modeling ...
    • Fault-related folding, drainage network evolution and valley incision during the Neogene in the Andean ... 
      García, Marcelo; Hérail, Gérard (ELSEVIER, 2005-02-15)
      We describe Neogene drainage network development before, during and after regional folding in the Precordillera of the Andes of Northern Chile (18degrees-19degreesS). The drainage network developed on an extensive regular ...
    • Fe-Ni-bearing serpentines from the saprolite horizon of Caribbean Ni-laterite deposits: new insights from ... 
      Villanova de Benavent, Cristina; Domenech, Cristina; Tauler, Esperança; Gali, Salvador; Tassara, Santiago; Proenza, Joaquín A. (Springer, 2017)
      Fe-Ni-bearing serpentine from the saprolite horizon is the main Ni ores in hydrous silicate-type Ni laterites and formed by chemical weathering of partially serpentinized ultramafic rocks under tropical conditions. During ...
    • Feasibility and cost minimisation for a lithium extraction problem 
      Bosch, P.; Contreras, J. P.; Munizaga Rosas, J. (Elsevier, 2020)
      In this paper we address the problem of allocating extraction pumps to wells, when exploiting lithium rich brines, as part of the production of lithium salts. The problem of choosing the location of extraction wells is ...
    • Feature detection with a constant FAR in sparse 3-D point cloud data 
      Lühr, Daniel; Adams, Martin; Houshiar, Hamidreza; Borrmann, Dorit; Nuechter, Andreas (IEEE, 2020)
      The detection of markers or reflectors within point cloud data (PCD) is often used for 3-D scan registration, mapping, and 3-D environmental modeling. However, the reliable detection of such artifacts is diminished when ...
    • Feature selection algorithms using Chilean wine chromatograms as examples 
      Beltrán Maturana, Nicolás; Duarte Mermoud, Manuel; Salah, S. A.; Bustos, M. A.; Peña Neira, Álvaro; Loyola Madariaga, Eduardo; Jalocha, J. W. (ELSEVIER SCI LTD, 2005-04)
      This work presents the results of applying genetic algorithms., in selecting the more relevant features present in chromatograms of polyphenolic compounds, obtained from a high performance liquid chromatograph with aligned ...
    • Feature selection for health care costs prediction using weighted evidential regression 
      Panay, B; Baloian, N; Pino, JA; Penafiel, S; Sanson, H; Bersano, N (MDPI AGPostfachBaselCH-4005rasetti@mdpi.com, 2020)
    • Feature selection for high-dimensional class-imbalanced data sets using Support Vector Machines 
      Maldonado, Sebastián; Weber, Richard; Famili, Fazel (Elsevier, 2014)
      Feature selection and classification of imbalanced data sets are two of the most interesting machine learning challenges, attracting a growing attention from both, industry and academia. Feature selection addresses the ...
    • Feature selection for Support Vector Machines via Mixed Integer Linear Programming 
      Maldonado, Sebastián; Pérez, Juan; Weber, Richard; Labbé, Martine (Elsevier, 2014)
      The performance of classification methods, such as Support Vector Machines, depends heavily on the proper choice of the feature set used to construct the classifier. Feature selection is an NP-hard problem that has been ...
    • Feature-Based 3D Object Retrieval 
      Bustos Cárdenas, Benjamín; Schreck, Tobias (2009)
    • Feature-dependent compensation of coders in speech recognition 
      Becerra Yoma, Néstor; Molina, Carlos (ELSEVIER, 2006-01)
      A solution to the problem of speech recognition with signals corrupted by coders is presented. The coding-decoding distortion is modelled as feature dependent. This model is employed to propose an unsupervised expectatio ...
    • Features of heavy physics in the CMB power spectrum 
      Achúcarro, Ana; Gong, Jinn-Ouk; Hardeman, Sjoerd; Palma Quilodrán, Gonzalo; Patil, Subodh P. (Elsevier, 2011-01)
      The computation of the primordial power spectrum in multi-field inflaation models requires us to correctly account for all relevant interactions between adiabatic and non-adiabatic modes around and after horizon crossing. ...
    • Feedback Arc Set Problem and NP-Hardness of Minimum Recurrent Configuration Problem of Chip-Firing Game on ... 
      Perrot, Kévin; Van Pham, Trung (Springer, 2015)
      In this paper we present further studies of recurrent configurations of chip-firing games on Eulerian directed graphs (simple digraphs), a class on the way from undirected graphs to general directed graphs. A computational ...
    • Feedback control and heat transfer measurements in a Rayleigh-Benard convection cell 
      Vial, M.; Hernández Pellicer, Rodrigo (American Institute of Physics, 2017)
      We report experimental results on the heat transfer and instability onset of a Rayleigh-Benard convection cell of aspect ratios 6:3:1 filled with a high Prandtl aqueous solution of glycerol under feedback control. We ...
    • Feeder-trunk or direct lines? Economies of density, transfer costs and transit structure in an urban context 
      Gschwender Krause, Antonio; Jara Díaz, Sergio; Bravo Labra, Claudia (Pergamon-Elsevier, 2016)
      A feeder-trunk scheme has been labeled as superior in urban areas due to the presence of economies of density (decreasing average operating cost) along the avenues served by trunk lines. We compare this structure against ...
    • Ferroelastic behavior of LaCoO3: A comparison of impression and compression techniques 
      Akbari-Fakhrabadi, Ali; Rodríguez, Oliver; Rojas, Ricardo; Meruane Naranjo, Viviana; Pishahang, Mohammad (Elsevier Ltd, 2019)
      Ferroelastic mechanical behavior of LaCoO3 was investigated by the impression test and compared with the conventional compression test using digital image correlation technique for deformation measurement. The results show ...
    • Fe–O stable isotope pairs elucidate a high-temperature origin of Chilean iron oxide-apatite deposits 
      Bilenker, Laura; Simon, Aadam; Reich Morales, Martín; Lundstrom, Craig; Gajos, Norbert; Bindeman, Ilya; Barra Pantoja, Fernando; Munizaga, Rodrigo (Elsevier, 2016)
      Iron oxide–apatite (IOA) ore deposits occur globally and can host millions to billions of tons of Fe in addition to economic reserves of other metals such as rare earth elements, which are critical for the expected growth ...
    • Fiber-based infrared heterodyne technology for the PFI: Development of a prototype test system 
      Besser, F.; Ramos, N.; Rates, A.; Ortega, N.; Sepulveda, S.; Parvex, T.; Piña, M.; Pollarolo, C.; Jara, R.; Espinoza, K.; Rodriguez, A.; Becerra, A.; Martin, P.; Cadiz, M.; Henriquez, N.; Carrasco, J.; San Martin, C.; Rearte, C.; Diaz, J.; Moreno, E.; Michael, E. (SPIE, 2018)
      We present the concept and experimental development of a low-cost near-infrared heterodyne interferometer prototype based on commercial 1.55 μm fiber components. As the most crucial component of it we characterized a novel ...
    • Fibroblast Primary Cilia Are Required for Cardiac Fibrosis 
      Villalobos, Elisa; Criollo Céspedes, Alfredo; Schiattarella, Gabriele G.; Altamirano, Francisco; French, Kristin M.; May, Herman I.; Jiang, Nan; Nguyen, Ngoc Uyen Nhi; Romero, Diego; Roa, Juan Carlos; García Nannig, Lorena; Díaz Araya, Guillermo; Morselli, Eugenia; Ferdous, Anwarul (NLM (Medline), 2019)
      BACKGROUND: The primary cilium is a singular cellular structure that extends from the surface of many cell types and plays crucial roles in vertebrate development, including that of the heart. Whereas ciliated cells have ...
    • Field emission properties of carbon nanowalls prepared by RF magnetron sputtering 
      Guzmán-Olivos, F.; Espinoza-González, R.; Fuenzalida, V.; Morell, G. (Springer Verlag, 2019)
      Carbon nanowalls were prepared on silicon substrates by radio frequency magnetron sputtering under an argon–hydrogen mixture, at different hydrogen fluxes and varying the substrate temperature and deposition times. Scanning ...