Browsing by Title Facultad de Ciencias Físicas y Matemáticas

Now showing items 11936-11955 of 20589

    • LOWER SEMICONTINUOUS CONVEX RELAXATION IN OPTIMIZATION 
      Correa Fontecilla, Rafael; Hantoute, Abderrahim (Society for Industrial and Applied Mathematics, 2013)
      We relate the argmin sets of a given function, not necessarily convex or lower semicontinuous, and its lower semicontinuous convex hull by means of explicit characterizations involving an appropriate concept of asymptotic ...
    • Lp theory for Boussinesq system with Dirichlet boundary conditions 
      Acevedo, Paul; Amrouche, Chérif; Conca, Carlos (Taylor and Francis Ltd., 2019)
      © 2018, © 2018 Informa UK Limited, trading as Taylor & Francis Group.We consider the stationary Boussinesq system with non-homogeneous Dirichlet boundary conditions in a bounded domain Ω ⊂ R3 of class C1, 1 with a possibly ...
    • LP-Based Approximation Algorithms for Facility Location in Buy-at-Bulk Network Design 
      Friggstad, Zachary; Rezapour, Mohsen; Salavatipour, Mohammad R.; Soto San Martín, José (Springer, 2019)
      We study problems that integrate buy-at-bulk network design into the classical (connected) facility location problem. In such problems, we need to open facilities, build a routing network, and route every client demand to ...
    • Lp-solutions of a nonlinear third order differential equation and the Poincaré–Perron problem 
      Coronel, Aníbal; Friz, Luis; Huancas, Fernando; Pinto, Manuel (Birkhauser Verlag AG, 2019)
      © 2018, Springer Nature Switzerland AG.In this paper we prove the well-posedness and we study the asymptotic behavior of nonoscillatory Lp-solutions for a third order nonlinear scalar differential equation. The equation ...
    • Lp-theory for the boussinesq System 
      Acevedo Tapia, Paul Andrés (Universidad de Chile, 2015)
      Esta tesis está dedicada al estudio del sistema de Boussinesq estacionario: \begin{subequations}\label{sum_sp:eqn_Boussinesq} \begin{equation} -\nu \Delta\vu +(\vu\cdot\nabla)\vu+\nabla \pi=\theta\vg \text{\quad en ...
    • LSQ13fn: A type II-Plateau supernova with a possibly low metallicity progenitor that breaks the standardised ... 
      Polshaw, J.; Kotak, R.; Dessart, L.; Fraser, M.; Gal Yam, Avishay; Inserra, C.; Sim, S. A.; Smartt, S. J.; Sollerman, J.; Baltay, C.; Rabinowitz, D.; Benetti, S.; Botticella, M. T.; Campbell, H.; Chen, T. W.; Galbany, Lluis; McKinnon, R.; Nicholl, M.; Smith, K. W.; Sullivan, M.; Takáts, K.; Valenti, S.; Young, D. R. (ESO, 2016)
      We present optical imaging and spectroscopy of supernova (SN) LSQ13fn, a type II supernova with several hitherto-unseen properties. Although it initially showed strong symmetric spectral emission features attributable to ...
    • LSQ14bdq: A Type Ic super-luminous supernova with a double-peaked light curve 
      Nicholl, M.; Smartt, S. J.; Jerkstrand, A.; Sim, S. A.; Inserra, C.; Anderson, J. P.; Baltay, C.; Benetti, S.; Chambers, K.; Chen, T. W.; Elias Rosa, N.; Feindt, U.; Flewelling, H. A.; Fraser, M.; Gal Yam, Avishay; Galbany, Lluis; Huber, M. E.; Kangas, T.; Kankare, E.; Kotak, R.; Kruehler, T.; Maguire, K.; McKinnon, R.; Rabinowitz, D.; Rostami, S.; Schulze, Steve; Smith, K.W.; Sullivan, M.; Tonry, J. L.; Valenti, S.; Young, D. R. (IOP Publishing, 2015)
      We present data for LSQ14bdq, a hydrogen-poor super-luminous supernova (SLSN) discovered by the La Silla QUEST survey and classified by the Public ESO Spectroscopic Survey of Transient Objects. The spectrum and light curve ...
    • Lubrisa: Desarrollo de un Plan de Negocio para Incursionar en el Mercado Panameño de Lubricantes de Motor 
      Caballero Vallester, Felicio (Universidad de Chile, 2011)
      El objetivo de desarrollar este plan de negocio para LUBRISA, LUBRICANTES S,A., empresa dedicada a la importación y comercialización de Lubricantes marca Gulf, fabricados por AMALIE OIL COMPANY de alta calidad y precios ...
    • A lucky imaging multiplicity study of exoplanet host stars - II 
      Ginski, C.; Mugrauer, M.; Seeliger, M.; Buder, S.; Errmann, E.; Avenhaus, H.; Mouillet, D.; Maire, Anne-Lise; Raetz, S. (Oxford Univ Press, 2016)
      The vast majority of extrasolar planets are detected by indirect detection methods such as transit monitoring and radial velocity measurements. While these methods are very successful in detecting short-periodic planets, ...
    • Luminosity function from dedicated SDSS-III and MMT data of quasars in 0.7 < z < 4.0 selected with a new approach 
      Palanque-Delabrouille, Nathalie; Magneville, Ch.; Yèche, Ch.; Eftekharzadeh, S.; Myers, A. D.; Petitjean, P.; Pâris, I.; Aubourg, E.; McGreer, I.; Fan, X.; Dey, A.; Schlegel, D.; Bailey, S.; Bizayev, D.; Bolton, A.; Dawson, K.; Ebelke, G.; Ge, J.; Malanushenko, E.; Malanushenko, V.; Oravetz, D.; Pan, K.; Ross, N. P.; Schneider, D. P.; Sheldon, E.; Simmons, A.; Tinker, J.; White, M.; Willmer, Ch. (ESO, 2013)
      We present a measurement of the quasar luminosity function in the range 0.68 < z < 4 down to extinction corrected magnitude gdered = 22.5, using a simple and well understood target selection technique based on the ...
    • Luminous blue variables: An imaging perspective on their binarity and near environment 
      Martayan, Christophe; Lobel, Alex; Baade, Dietrich; Mehner, Andrea; Rivinius, Thomas; Bo n, Henri M. J.; Girard, Julien; Mawet, Dimitri; Montagnier, Guillaume; Blomme, Ronny; Kervella, Pierre; Sana, Hugues; Štefl, Stanislav; Zorec, Juan; Lacour, Sylvestre; Le Bouquin, Jean-Baptiste; Martins, Fabrice; Mérand, Antoine; Patru, Fabien; Selman, Fernando; Frémat, Yves (ESO, 2016-03)
      Context. Luminous blue variables (LBVs) are rare massive stars with very high luminosity. They are characterized by strong photometric and spectroscopic variability related to transient eruptions. The mechanisms at the ...
    • The luminous Type Ic supernova 1992ar at z=0.145 
      Clocchiatti, Alejandro; Phillips, Mark M.; Suntzeff, Nicholas B.; Della Valle, Massimo; Cappellaro, Enrico; Turatto, Massimo; Hamuy Wackenhut, Mario; Avilés, Roberto; Navarrete, Mauricio; Smith, Chris; Rubenstein, Eric P.; Covarrubias, Ricardo; Stetson, Peter B.; Maza Sancho, José; Riess, Adam G.; Zanin, Caterina (2000-02-01)
      We present spectroscopic and photometric observations of SN 1992ar, the most distant supernova (SN) in the Cala n/Tololo Survey. We compare its spectrum with those of nearby Type Ia and Ic SNe and conclude that the ...
    • Luminous Type II supernovae for their low expansion velocities 
      Rodríguez, Ó.; Pignata, G.; Anderson, J. P.; Moriya, T. J.; Clocchiatti, A.; Förster Burón, Francisco; Prieto, J.L.; Phillips, M. M.; Burns, C. R.; Contreras, C.; Folatelli, G.; Gutiérrez, C. P.; Hamuy Wackenhut, Mario; Morrell, N. I.; Stritzinger, M. D.; Suntzeff, N. B.; Benetti, S.; Cappellaro, E.; Elias Rosa, N.; Pastorello, A.; Turatto, M.; Maza Sancho, José María; Antezana, Roberto; Cartier, R.; González Muñoz, Luis; Haislip, J. B.; Kouprianov, V.; López, P.; Marchi Lasch, Sebastián; Reichart, D. (Oxford University Press, 2020)
      We present optical and near-infrared data of three Type II supernovae (SNe II), SN 2008bm, SN 2009aj, and SN 2009au. These SNe display the following common characteristics: signs of early interaction of the ejecta with ...
    • Lyapunov functions for fractional order systems 
      Águila Camacho, Norelys; Duarte Mermoud, Manuel; Gallegos, Javier A. (Elsevier, 2014)
      A new lemma for the Caputo fractional derivatives, when 0 < a < 1, is proposed in this paper. This result has proved to be useful in order to apply the fractional-order extension of Lyapunov direct method, to demonstrate ...
    • Lyapunov pairs for perturbed sweeping processes 
      Hantoute, Abderrahim; Vilches, Emilio (Springer, 2018)
      We give a full characterization of nonsmooth Lyapunov pairs for perturbed sweeping processes under very general hypotheses. As a consequence, we provide an existence result and a criterion for weak invariance for perturbed ...
    • Lyapunov stability of differential inclusions with Lipschitz Cusco perturbations of maximal monotone operators 
      Adly, Samir; Hantoute, Abderrahim; Nguyen, Bao Tran (Springer, 2020)
      We give new criteria for weak and strong invariant closed sets for differential inclusions in Double-struck capital Rn, and which are simultaneously governed by Lipschitz Cusco mapping and by maximal monotone operators. ...
    • LZ78 compression in low main memory space 
      Arroyuelo, Diego; Cánovas, Rodrigo; Navarro, Gonzalo; Raman, Rajeev (Springer, 2017)
      We present the first algorithms that perform the LZ78 compression of a text of length n over alphabet [1..σ], whose output is z integers, using only O(z lg σ) bits of main memory. The algorithms read the input text from ...
    • M2TA - Mobile mouse touchscreen accessible for users with motor disabilities 
      Rocha Façanha, Agebson; Carneiro Araújo, Maria da Conceição; Viana, Windson; Sánchez, Jaime (Springer Verlag, 2018)
      This paper addresses the accessibility challenges of people with motor impairments regarding their access to the computer. Our focus is a new mouse design, which in its traditional ergonomics may affect the interaction ...
    • Machine learning algorithms to improve risk prediction models in healthcare 
      Wolff Rojas, Patricio Antonio (Universidad de Chile, 2019)
      Actualmente, se utiliza una gran cantidad de modelos de riesgo en diferentes instituciones de salud. Las herramientas de Machine Learning (ML) pueden ser utilizadas para automatizar estos procesos y mejorar los resultados ...
    • Machine Learning and Deep Learning Methods in Mining Operations: a Data-Driven SAG Mill Energy Consumption ... 
      Avalos, S; Kracht, W; Ortiz, JM (Springer, 2020)