Browsing by Title Artículos de revistas

Now showing items 48-67 of 7543

    • A characteristic martingale related to the counting process of records 
      Gouet Bañares, Raúl; López, F. Javier; Sanz, Gerardo (2007)
      Let (Xn) be a sequence of nonnegative, integrable, independent and identically distributed random variables, with common distribution function F. We consider the problem of finding all distribution functions F such that ...
    • A cheap mesoporous silica from fly ash as an outstanding adsorbent for sulfate in water 
      Castillo, Ximena; Pizarro, Jaime; Ortiz, Claudia; Cid, Héctor; Flores Carrasco, Marcos; De Canck, Els; Van Der Voort, Pascal (Elsevier B.V., 2018)
      This research describes the development of a very cheap mesoporous silica material similar to hexagonal mesoporous silica (HMS) and using a silicate extract as precursor. This precursor is obtained from cheap fly ash by ...
    • A Chemical and kinematical analysis of the intermediate-age open cluster IC 166 from APOGEE and Gaia DR2 
      Schiappacasse Ulloa, J.; Tang, B.; Fernández Trincado, J. G.; Zamora, O.; Geisler, D.; Frinchaboy, P.; Schultheis, M.; Dell'Agli, F.; Villanova, S.; Masseron, T.; Meszaros, Sz.; Souto, D.; Hasselquist, S.; Cunha, K.; Smith, V. V.; García Hernández, D. A.; Vieira, K.; Robin, A. C.; Minniti, D.; Zasowski, G.; Moreno, E.; Pérez Villegas, A.; Lane, R. R.; Ivans, I. I.; Pan, K.; Nitschelm, C.; Santana, F.; Carrera, R.; Román Lopes, A. (IOP Publishing, 2018-09)
      IC 166 is an intermediate-age open cluster (OC) (similar to 1 Gyr) that lies in the transition zone of the metallicity gradient in the outer disk. Its location, combined with our very limited knowledge of its salient ...
    • A clumpy and anisotropic galaxy halo at redshift 1 from gravitational-arc tomography 
      López Morales, Sebastián; Tejos, Nicolás; Ledoux, Cedric; Barrientos, Felipe L.; Sharon, Keren; Rigby, Jane R.; Gladders, Michael D.; Bayliss, Matthew B.; Pessa, Ismael (Nature Publishing Group, 2018)
      Every star-forming galaxy has a halo of metal-enriched gas that extends out to at least 100 kiloparsecs(1-3), as revealed by the absorption lines that this gas imprints on the spectra of background quasars(4). However, ...
    • A cold seep triggered by a hot ridge subduction 
      Villar Muñoz, Lucía Alejandra; Kinoshita, Masataka; Bento, Joaquim P.; Vargas Cordero, Iván; Contreras Reyes, Eduardo Eliseo; Tinivella, Umberta; Giustiniani, Michela; Abe, Natsue; Anma, Roy; Orihashi, Yuji; Iwamori, Hikaru; Nishikawa, Tomoaki; Veloso, Eugenio Andrés; Haraguchi, Satoru (Nature, 2021)
      The Chile Triple Junction, where the hot active spreading centre of the Chile Rise system subducts beneath the South American plate, offers a unique opportunity to understand the influence of the anomalous thermal regime ...
    • A column generation approach for location-routing problems with pickup and delivery 
      Capelle, Thomas; Cortés, Cristián; Gendreau, Michel; Rey, Pablo; Rousseau, Louis (Elsevier B.V., 2019)
      In this paper we formulate an integer programming model for the Location and Routing Problem with Pickup and Delivery. We propose a column generation scheme and implement, for the subproblem, a label-setting algorithm for ...
    • A column generation approach for solving generation expansion planning problems with high renewable energy ... 
      Flores Quiroz, Ángela; Palma Behnke, Rodrigo; Zakeri, Golbon; Moreno Vieyra, Rodrigo (Elsevier, 2016)
      The high penetration of renewables envisaged for future power systems will significantly increasethe need for flexible operational measures and generation technologies, whose associated investmentdecisions must be properly ...
    • A column generation approach to multiscale capacity planning for power-intensive process networks 
      Flores-Quiroz, Angela; Pinto, Jose M.; Zhang, Qi (Springer New York LLC, 2019)
      Due to the high volatility in electricity prices, power-intensive industrial plants often have to frequently shift load in order to remain cost-competitive. Capacity planning is required for assessing the value of additional ...
    • A Combination of Extreme Environmental Conditions Favor the Prevalence of Endospore-Forming Firmicutes 
      Filippidou, Sevasti; Wunderlin, Tina; Junier, Thomas; Jeanneret, Nicole; Dorador, Cristina; Molina, Verónica; Johnson, David; Junier, Pilar (Frontiers Media, 2016)
      Environmental conditions unsuitable for microbial growth are the rule rather than the exception in most habitats. In response to this, microorganisms have developed various strategies to withstand environmental conditions ...
    • A comminution model for secondary fragmentation assessment for block caving 
      Gómez, René; Castro Ruiz, Raúl; Casali Bacelli, Aldo; Palma, Sergio; Hekmat, Asieh (Springer, 2017)
      Predicting the rock fragmentation obtained in drawpoints or secondary fragmentation is crucial in Block caving application since many engineering decisions are based on this key variable. These can include drawpoints size ...
    • A common cause failure model for components under age-related degradation 
      Zhou, Taotao; López Droguett, Enrique; Modarres, Mohammad (Elsevier, 2020)
      This paper discusses component age-related degradation and failure initiated from a shared cause and coupling factor (or mechanism) and the likelihood of the resulting common cause failure (CCF). For these components a CCF ...
    • A compact multi-planet system around a bright nearby star from the Dispersed Matter Planet Project 
      Staab, D; Haswell, CA; Barnes, JR; Anglada-Escude, G; Fossati, L; Doherty, JPJ; Cooper, J; Jenkins, JS; Diaz, MR; Soto, MG (Nature Research, 2020)
    • A Comparative Study of Finland and Chile: the Culture-Dependent Significance of the Individual and ... 
      Tuohilampi, Laura; Laine, Anu; Hannula, Markku S.; Varas Scheuch, María Leonor (Springer, 2016)
      Mathematics-related affect is established regarding both individual and interindividual levels. However, the interaction between the levels has not been elaborated. Furthermore, it is known that people may draw either from ...
    • A comparative study of thermal face recognition methods in unconstrained environments 
      Hermosilla, Gabriel; Ruiz del Solar, Javier; Verschae, Rodrigo; Correa, Mauricio (Elsevier, 2012-07)
      The recognition of faces in unconstrained environments is a challenging problem. The aim of this work is to carry out a comparative study of face recognition methods working in the thermal spectrum (8-12 mu m) that are ...
    • A comparison between ACO and Dijkstra algorithms for optimal ore concentrate pipeline routing 
      Baeza, Daniel; Ihle Bascuñán, Christian; Ortiz Cabrera, Julián (Elsevier, 2017)
      One of the important aspects pertaining the mining industry is the use of territory. This is especially important when part of the operations are meant to cross regions outside the boundaries of mines or processing plants. ...
    • A comparison of characteristic parameters of mining related and tectonic seismic aftershock sequences 
      Estay, Rodrigo; Vallejos Massa, Javier; Pavez, Claudia; Brönner, Marco (Elsevier, 2020)
      The temporal decay pattern of seismicity following rock bursts and large magnitude events is studied for aftershock sequences in several mines in Ontario, Canada. The decay phenomenon is described by the so – called Modified ...
    • A comparison of density structures of a star forming and a non-star-forming globule - DCld303.8-14.2 and ... 
      Kainulainen, J.; Lehtinen, K.; Väisänen, P.; Bronfman Aguiló, Leonardo; Knude, J. (EDP SCIENCES S A, 2007-03)
      We present a study of radial density structure of the star forming globule, DCld303.8-14.2 (DC303), and a non-star forming globule, Thumbprint Nebula (TPN), using near-infrared data taken with the ISAAC instrument on the ...
    • A Comparison of Random Field Models Beyond Bivariate Distributions 
      Emery, Xavier; Ortiz Cabrera, Julián (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 ...
    • A comparison of search strategies to design the cokriging neighborhood for predicting coregionalized variables 
      Madani, Nasser; Emery, Xavier (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 ...
    • A comprehensive analysis of the Illapel 2015 Mw 8.3 Earthquake from GPS and InSAR data 
      Klein, E.; Vigny, C.; Fleitout, L.; Grandin, R.; Jolivet, R.; Rivera Berríos, Efraín; Metois, M. (Elsevier, 2017-07)
      The September 16, 2015 Mw8.3 Illapel Earthquake occurred on a locked segment of the South American subduction in Chile. This segment ruptured during comparable size earthquakes in the past, in 1880 and 1943, suggesting a ...