Browsing by Title Artículos de revistas

Now showing items 3806-3825 of 7543

    • Low-energy ion beam synthesis of ag endotaxial nanostructures in silicon 
      Nagarajappa, Kiran; Guha, Puspendu; Thirumurugan, Arun; Satyam, Parlapalli V.; Bhatta, Umananda M. (Springer, 2018-06)
      Coherently, embedded metal nanostructures (endotaxial) are known to have potential applications concerning the areas of plasmonics, optoelectronics and thermoelectronics. Incorporating appropriate concentrations of metal ...
    • Low-mass star formation in Lynds 1333 
      Kun, M.; Nikolić, Silvana; Johansson, L. E. B.; Balog, Z.; Gáspár, A. (BLACKWELL, 2006-09-11)
      Medium-resolution optical spectroscopy of the candidate young stellar objects associated with the small, nearby molecular cloud Lynds 1333 revealed four previously unknown classical T Tauri stars, two of which are components ...
    • Low-PAPR Hybrid Filter for SC-FDMA 
      Kamal, Shaharyar; Azurdia Meza, César; Tran, Nguyen H.; Lee, Kyesan (IEEE, 2017)
      We propose a hybrid filter to reduce the peak-to-average power ratio (PAPR) on the transmitter side in a long-term evolution uplink scheme. The design of the proposed filter is based on two key components: a finite impulse ...
    • Low-temperature anisotropic diffusion of helium in zircon: Implications for zircon (U–Th)/He thermochronometry 
      Reich Morales, Martín; Ewing, Rodney C.; Ehlers, Todd A.; Becker, Udo (PERGAMON-ELSEVIER SCIENCE LTD, 2007-06)
      In the last decade the zircon (U–Th)/He (ZHe) thermochronometer has been applied to a variety of geologic problems. Although bulk diffusion coefficients for He in zircon are available from laboratory step-heating ...
    • Low-velocity shocks traced by extended sio emission along the w43 ridges: witnessing the formation of young ... 
      Nguyen-Luong, Q.; Motte, F.; Carlhoff, P.; Louvet, F.; Lesaffre, P.; Schilke, P.; Hill, T.; Hennemann, M.; Gusdorf, A.; Didelon, P.; Schneider, N.; Bontemps, S.; Duarte Cabral, A.; Menten, K. M.; Martin, P. G.; Wyrowski, F.; Bendo, G.; Roussel, H.; Bernard, J. P.; Bronfman Aguiló, Leonardo; Henning, Thomas; Kramer, C.; Heitsch, F. (The American Astronomical Society, 2013-10-01)
      The formation of high-mass stars is tightly linked to that of their parental clouds. Here, we focus on the high-density parts of W43, a molecular cloud undergoing an efficient event of star formation. Using a column density ...
    • 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 ...
    • 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 ...
    • 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 ...