Browsing by Title Artículos de revistas

Now showing items 2669-2688 of 7543

    • 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 ...
    • Field observations and numerical models of a Pleistocene-Holocene feeder dyke swarm associated with a fissure ... 
      Ruz Ginouves, Javiera; Browning, John; Cembrano Perasso, José; Iturrieta, Pablo; Gerbault, Muriel; Sielfeld, Gerd (Elsevier, 2020)
      Magma is transported through the lithosphere as dykes which, during periods of unrest, may feed eruptions at the surface. The propagation path of dykes is influenced by the crustal stress field and can be disturbed by ...
    • FIFO Queues Are Bad for Rumor Spreading 
      Kiwi Krauskopf, Marcos; Thraves Caro, Christopher (Institute of Electrical and Electronics Engineers Inc., 2017)
      The two most intensively studied communication paradigms for spreading rumors are the so-called PUSH and PULL algorithms. The previous analysis of these protocols assumed that every node could process all such push/pull ...
    • Fifty years of Transportation Research journals: A bibliometric overview 
      Modak, Nikunja M.; Merigó Lindahl, José; Weber, Richard; Manzor, Felipe; Ortúzar, Juan de Dios (Elsevier Ltd, 2019)
      © 2018 Elsevier LtdTransportation Research (TR) was established in 1967 with the vision of promoting multi-disciplinary (economics, engineering, sociology, psychology) research on transport systems. The journal has ...
    • Filament intersections and cold dense cores in Orion A North 
      Zhang, Chao; Ren, Zhiyuan; Wu, Jingwen; Li, Di; Zhu, Lei; Zhang, Qizhou; Mardones Pérez, Diego; Wang, Chen; Shi, Hui; Yue, Nannan; Luo, Gan; Xie, Jinjin; Jiao, Sihan; Liu, Shu; Xu, Xuefang; Wang, Shen (Oxford University Press, 2020)
      We studied the filament structures and cold dense cores in OMC-2,3 region in Orion A North molecular cloud using the high-resolution N2H+ (1-0) spectral cube observed with the Atacama Large Millimeter/Submillimeter Array ...
    • Filling the gap in the table of smallest regulators up to degree 7 
      Friedman, Eduardo; Ramirez-Raposo, Gabriel (Academic Press Inc., 2019)
      In 2016 Astudillo, Diaz y Diaz and Friedman published sharp lower bounds for regulators of number fields of all signatures up to degree seven, except for fields of degree seven having five real places. We deal with this ...
    • Filosofía y sociedad hoy: La insoportable y posmoderna levedad de ser 
      Monares Ruiz, Andrés (Universidad del Bio-Bío, 2002)
    • Final targeting strategy for the SDSS-IV APOGEE-2S survey 
      Santana, Felipe; Beaton, Rachael L.; Covey, Kevin R.; O'Connell, Julia E.; Longa Pena, Penélope; Cohen, Roger; Fernández Trincado, José G.; Hayes, Christian R.; Zasowski, Gail; Sobeck, Jennifer S.; Majewski, Steven R.; Chojnowski, S. D.; De Lee, Nathan; Oelkers, Ryan J.; Stringfellow, Guy S.; Almeida, Andrés; Anguiano, Borja; Donor, John; Frinchaboy, Peter M.; Hasselquist, Sten; Johnson, Jennifer A.; Kollmeier, Juna A.; Nidever, David L.; Price Whelan, Adrián M.; Rojas Arriagada, Álvaro; Schultheis, Mathias; Shetrone, Matthew; Simón, Joshua D.; Aerts, Conny; Borissova, Jura; Drout, María R.; Geisler, Doug; Law, C. Y.; Medina, Nicolás; Minniti, Dante; Monachesi, Antonela; Muñoz Vidal, Ricardo; Poleski, Radoslaw; Román Lopes, Alexandre; Schlaufman, Kevin C.; Stutz, Amelia M.; Teske, Johanna; Tkachenko, Andrew; Van Saders, Jennifer L.; Weinberger, Alycia J.; Zoccali, Manuela (IOP, 2021)
      APOGEE is a high-resolution (R similar to 22,000), near-infrared, multi-epoch, spectroscopic survey of the Milky Way. The second generation of the APOGEE project, APOGEE-2, includes an expansion of the survey to the Southern ...
    • Financial liberalization, market structure and credit penetration 
      Balmaceda, Felipe; Fischer Barkan, Ronald; Ramírez, Felipe (Elsevier, 2014)
      This paper shows that the effects of financial liberalization on the credit market of a small and capital constrained economy depend on the market structure of domestic banks prior to liberalization. Specifically, under ...