Repositorio Académico de la Universidad de Chile: Recent submissions

Now showing items 34801-34820 of 97836

    • Transient shallow reservoirs beneath small eruptive centres: Constraints from Mg-Fe interdiffusion in olivine 
      Morgado, E.; Parada Reyes, Miguel; Morgan, D. J.; Gutiérrez, F.; Castruccio, A.; Contreras, C. (Elsevier, 2017)
      Small eruptive centres commonly have more primitive lavas than those associated with stratovolcanoes, an observation that has been taken to indicate a short magma residence in the crust relative to those reservoirs below ...
    • Scale invariance of the primordial tensor power spectrum 
      Palma Quilodrán, Gonzalo; Pradenas Márquez, Bastián; Riquelme, Walter; Sypsas, Spyros (American Physical Society, 2017)
      Future cosmic microwave background polarization experiments will search for evidence of primordial tensor modes at large angular scales, in the multipole range 4≤≤50. Because in that range there is some mild evidence of ...
    • A Magnus Wind Turbine Power Model Based on Direct Solutions Using the Blade Element Momentum Theory and ... 
      Richmond Navarro, Gustavo; Calderón Muñoz, Williams; LeBoeuf, Richard; Castillo, Pablo (IEEE, 2017)
      A model of the power coefficient of a mid-scale Magnus wind turbine using numerical solutions of the Blade Element Momentum Theory and symbolic regression is presented. A direct method is proposed for solving the nonlinear ...
    • Applying community detection methods to cluster tags in multimedia search results 
      Bracamonte, Teresa; Hogan, Aidan; Poblete Labra, Bárbara (IEEE, 2017)
      Multimedia searches often return items that can becategorized into several “topics”, allowing users to disambiguateand explore answers more efficiently. In this paper we investigatemethods for clustering tags associated ...
    • From 2D to 3D: A case study of NPR and stereoscopic cinema 
      Fajnzylber Reyes, Víctor; Magdics, Milán; Castillo, Macarena; Ortega, Constanza; Sbert, Mateu (Springer, 2017)
      Our interdisciplinary research is dedicated to exploring the boundaries of stereoscopic filmmaking from an unusual viewpoint: we aim at creating 3D non-photorealistic cinema which allows conciliating a stereoscopic ...
    • Long term behavior of dynamic equilibria in fluid queuing networks 
      Cominetti, Roberto; Correa Haeussler, José; Olver, Neil (Springer, 2017)
      A fluid queuing network constitutes one of the simplest mod-els in which to study flow dynamics over a network. In this model wehave a single source-sink pair and each link has a per-time-unit capac-ity and a transit time. ...
    • Uncertainties propagation and global sensitivity analysis of the frequency response function of piezoelectric ... 
      Ruiz García, Rafael; Meruane Naranjo, Viviana (Institute of Physics, 2017)
      The goal of this work is to describe a framework to propagate uncertainties in piezoelectricenergy harvesters(PEHs). These uncertainties are related to the incomplete knowledge of themodel parameters. The framework presented ...
    • Non-isothermal Characterization of the Precipitation Hardening of a Cu-11Ni-19Zn-1Sn Alloy 
      Donoso Catalán, Eduardo; Diánez, M. J.; Criado, J. M.; Espinoza González, Rodrigo; Mosquera, E. (Springer, 2017)
      The precipitation hardening of a Cu-11Ni-19Zn-1Sn alloy has been studied by means of Differential Scanning Calorimetry (DSC), High-Resolution Transmission Electron Microscopy (HRTEM), and hardness measurements. The ...
    • Molecular gas in supernova local environments unveiled by EDGE 
      Galbany, Lluis; Mora, L.; González Gaitán, S.; Bolatto, A.; Dannerbauer, H.; López Sánchez, R.; Maeda, K.; Pérez, S.; Pérez Torres, A.; Sánchez, S. F.; Wong, T.; Badenes, C.; Blitz, L.; Marino, R. A.; Utomo, D.; Van de Ven, G. (Oxford University, 2017)
      CO observations allow estimations of the gas content of molecular clouds, which trace thereservoir of cold gas fuelling star formation, as well as to determine extinction via H2col-umn density, N(H2). Here, we studied ...
    • A submillimeter study of the IR dust bubble s 21 and its environs 
      Cappa, Cristina; Duronea, Nicolas; Vasquez, Javier; Rubio, M.; Firpo, V.; López-Caraballo, C.; Borissova, J. (Universidad Nacional Autonoma de Mexico, 2017)
      Based on the molecular emission in the 12CO(2-1) and 13CO(2-1) lines, and on the continuum emission in the MIR and FIR towards the S 21 IR dust bubble, we analyze the physical characteristics of the gas and dust linked to ...
    • Chilean underground mine dataset 
      Leung, Keith; Lühr, Daniel; Houshiar, Hamidreza; Inostroza Allende, Luis Felipe; Borrmann, Dorit; Adams, Martin; Nüchter, Andreas; Ruiz del Solar, Javier (SAGE, 2017)
      This article presents a robotic dataset collected from the largest underground copper mine in the world. The sensor mea-surements from a 3D scanning lidar, a 2D radar, and stereo cameras were recorded from an approximately ...
    • An Enhanced dq-Based Vector Control System for Modular Multilevel Converters Feeding Variable-Speed Drives 
      Espinoza, Mauricio; Cárdenas Dobson, Jesús; Díaz, Matías; Clare, Jon C. (IEEE, 2017)
      Modular multilevel converters (M2C) are considered an attractive solution for high power drive applications. However, energy balancing within the converter is complex to achieve, particularly when the machine is operating ...
    • Confinement behavior of rectangular reinforced concrete prisms simulating wall boundary elements 
      Welt, Travis S.; Massone Sánchez, Leonardo; Lafave, James M.; Lehman, Dawn E.; McCabe, Steven L.; Polanco, Pablo (American Society of Civil Engineers (ASCE), 2017)
      Observations following recent earthquakes, and from structural testing, indicate numerous brittle compression failures in rein-forced concrete seismic-resisting walls. This is unexpected, as most seismic-resisting walls ...
    • Impact location and quantification on an aluminum sandwich panel using principal component analysis and ... 
      Meruane Naranjo, Viviana; Véliz, Pablo; López Droguett, Enrique; Ortiz Bernardín, Alejandro (MDPI, 2017)
      To avoid structural failures it is of critical importance to detect, locate and quantify impact damage as soon as it occurs. This can be achieved by impact identification methodologies, which continuously monitor the ...
    • Recovering Latent Signals from a Mixture of Measurements Using a Gaussian Process Prior 
      Tobar Henríquez, Felipe; Ríos, Gonzalo; Valdivia, Tomás; Guerrero, Pablo (IEEE, 2017)
      In sensing applications, sensors cannot always mea-sure the latent quantity of interest at the required resolution, some-times they can only acquire a blurred version of it due the sensor’stransfer function. To recover ...
    • Characterization of spatiotemporal chaos in a Kerr optical frequency comb and in all fiber cavities 
      Liu, Z.; Ouali, M.; Coulibaly, S.; Clerc Gavilán, Marcel; Taki, M.; Tlidi, M. (OSA - The Optical Society, 2017)
      Complex spatiotemporal dynamics have been a subject of recent experimental investigations in optical frequency comb microresonators and in driven fiber cavities with Kerr-type media. We show that this complex behavior has ...
    • Implicit equations for thermoelastic bodies 
      Bustamante Plaza, Roger; Rajagopal, K. R. (Elsevier, 2017)
      In this paper we generalize the recent implicit models that have been put into place to describe the elastic response of bodies when thermal effects come into play. The implicit constitutive relations for thermoelastic ...
    • Relaxation processes after instantaneous shear rate reversal in a dense granular flow 
      Rojas, Eduardo; Soto Bertrán, Rodrigo; Clement, Eric; Trulsson, Martin; Andreotti, Bruno (EDP Sciences, 2017)
      A numerical model of granular material at different packing fractions and under steady shear is submitted to a sudden shear reversal. We monitor consequences of the strong density and shear rate spatiotemporal heterogeneities, ...
    • Modelling age replacement policy under multiple time scales and stochastic usage profiles 
      Díaz, Nicole; Pascual, Rodrigo; Ruggeri, Fabrizio; López Droguett, Enrique (Elsevier, 2017)
      This paper offers an original methodology to set multi-dimensional maintenance policies for machines whose aging processes require using multiple time scales. It can be considered a generalization of the traditional approach, ...
    • Space Telescope and Optical Reverberation Mapping Project. V. Optical Spectroscopic Campaign and Emission-line ... 
      Pei, L.; Fausnaugh, M. M.; Barth, A. J.; Peterson, B. M.; Bentz, M. C.; Rosa, G. de; Denney, K. D.; Goad, M. R.; Kochanek, C. S.; Korista, K. T.; Kriss, G. A.; Pogge, R. W.; Bennert, V. N.; Brotherton, M.; Clubb, K. I.; Dalla Bontà, E.; Filippenko, A. V.; Greene, J. E.; Grier, C. J.; Vestergaard, M.; Zheng, W.-K; Adams, Scott M.; Beatty, Thomas G.; Bigley, A.; Brown, Jacob E.; Brown, Jonathan S.; Canalizo, G.; Comerford, J. M.; Coker, Carl T.; Corsini, E. M.; Croft, S.; Croxall, K. V.; Deason, A. J.; Eracleous, Michael; Fox, O. D.; Gates, E. L.; Henderson, C. B.; Holmbeck, E.; Holoien, T. W.-S; Jensen, J. J.; Johnson, C. A.; Kelly, P. L.; Kim, S.; King, A.; Lau, M. W.; Li, Miao; Lochhaas, Cassandra; Ma, Zhiyuan; Manne-Nicholas, E. R.; Mauerhan, J. C.; Malkan, M. A.; McGurk, R.; Morelli, L.; Mosquera, Ana; Dale Mudd, Dale; Muller Sánchez, F.; Nguyen, M. L.; Ochner, P.; Ou-Yang, B.; Pancoast, A.; Penny, Matthew T.; Pizzella, A.; Poleski, Radoslaw; Runnoe, Jessie; Scott, B.; Schimoia, Jaderson S.; Shappee, B. J.; Shivvers, I.; Simonian, Gregory V.; Siviero, A.; Somers, Garrett; Stevens, Daniel J.; Strauss, M. A.; Tayar, Jamie; Tejos, Nicolás; Treu, T.; Van Saders, J.; Vican, L.; Villanueva, S.; Yuk, H.; Zakamska, N. L.; Zhu, W.; Anderson, M. D.; Arévalo, P.; Bazhaw, C.; Bisogni, S.; Borman, G. A.; Bottorff, M. C.; Brandt, W. N.; Breeveld, A. A.; Cackett, E. M.; Carini, M. T.; Crenshaw, D. M.; Lorenzo Cáceres, A. de; Dietrich, M.; Edelson, R.; Efimova, N. V.; Ely, J.; Evans, P. A.; Ferland, G. J.; Flatland, K.; Gehrels, N.; Geier, S.; Gelbord, J. M.; Grupe, D.; Gupta, A.; Hall, P. B.; Hicks, S.; Horenstein, D.; Horne, Keith; Hutchison, T.; Im, M.; Joner, M. D.; Jones, J.; Kaastra, J.; Kaspi, S.; Kelly, B. C.; Kennea, J. A.; Kim, M.; Kim, S. C.; Klimanov, S. A.; Lee, J. C.; Leonard, D. C.; Lira Teillery, Paulina; MacInnis, F.; Mathur, S.; McHardy, I. M.; Montouri, C.; Musso, R.; Nazarov, S. V.; Netzer, H.; Norris, R. P.; Nousek, J. A.; Okhmat, D. N.; Papadakis, I.; Parks, J. R.; Pott, J.-U.; Rafter, S. E.; Rix, H.-W.; Saylor, D. A.; Schnülle, K.; Sergeev, S. G.; Siegel, M.; Skielboe, A.; Spencer, M.; Starkey, D.; Sung, H.-I.; Teems, K. G.; Turner, C. S.; Uttley, P.; Villforth, C.; Weiss, Y.; Woo, J.-H.; Yan, H.; Young, S.; Zu, Y. (Institute of Physics Publishing, 2017)
      We present the results of an optical spectroscopic monitoring program targeting NGC 5548 as part of a larger multi-wavelength reverberation mapping campaign. The campaign spanned six months and achieved an almost daily ...