Facultad de Ciencias Físicas y Matemáticas: Recent submissions

Now showing items 6421-6440 of 21973

    • A HARPS RV search for planets around young nearby stars 
      Grandjean, A.; Lagrange, A. M.; Keppler, M.; Meunier, N.; Mignon, L.; Borgniet, S.; Chauvin, G.; Desidera, S.; Galland, F.; Messina, S.; Sterzik, M.; Pantoja, B.; Rodet, L.; Zicher, N. (EDP Sciences, 2020)
      Context. Young nearby stars are good candidates in the search for planets with both radial velocity (RV) and direct imaging techniques. This, in turn, allows for the computation of the giant planet occurrence rates at all ...
    • Balanced training of a hybrid ensemble method for imbalanced datasets: a case of emergency department ... 
      Artetxe, Arkaitz; Graña, Manuel; Beristain, Andoni; Ríos Pérez, Sebastián (Springer, 2020)
      Dealing with imbalanced datasets is a recurrent issue in health-care data processing. Most literature deals with small academic datasets, so that results often do not extrapolate to the large real-life datasets, or have ...
    • Andean Mountain Building and Foreland Basin Evolution During Thin‐ and Thick‐Skinned Neogene Deformation (32–33°S) 
      Mackaman‐Lofland, Chelsea; Horton, Brian K.; Fuentes, Facundo; Constenius, Kurt N.; Ketcham, Richard A.; Capaldi, Tomas N.; Stockli, Daniel F.; Ammirati, Jean‐Baptiste; Alvarado, Patricia; Orozco, Paola (American Geophysical Union, 2020)
      The southern Central Andes recorded retroarc shortening, basin evolution, and magmatic arc migration during Neogene changes in subduction. At 31-33 degrees S, above the modern flat-slab segment, spatial and temporal linkages ...
    • An efficient algorithm for approximated self-similarity joins in metric spaces 
      Ferrada Aliaga, Sebastián; Bustos Cárdenas, Benjamín; Reyes, Nora (Elsevier, 2020)
      Similarity join is a key operation in metric databases. It retrieves all pairs of elements that are similar. Solving such a problem usually requires comparing every pair of objects of the datasets, even when indexing and ...
    • A family portrait of disk inner rims around Herbig Ae/Be stars. Hunting for warps, rings, self shadowing, ... 
      Kluska, J.; Berger, J. P.; Malbet, F.; Lazareff, B.; Benisty, Myriam; Le Bouquin, J. B.; Absil, O.; Baron, F.; Delboulbé, A.; Duvert, G.; Isella, A.; Jocou, L.; Juhasz, A.; Kraus, S.; Lachaume, R.; Ménard, F.; Millan-Gabet, R.; Monnier, J. D.; Moulin, T.; Perraut, K.; Rochat, S.; Pinte, C.; Soulez, F.; Tallon, M.; Thi, W. F.; Thiébaut, E.; Traub, W.; Zins, G. (EDP Sciences, 2020)
      Context. The innermost astronomical unit (au) in protoplanetary disks is a key region for stellar and planet formation, as exoplanet searches have shown a large occurrence of close-in planets that are located within the ...
    • Colouring exact distance graphs of chordal graphs 
      Quiroz Brito, Daniel (Elsevier, 2020)
      For a graph G = (V, E) and positive integer p, the exact distance-p graph G([hp]) is the graph with vertex set V and with an edge between vertices x and y if and only if x and y have distance p. Recently, there has been ...
    • Chaotic motion of localized structures 
      Alvarez Socorro, A. J.; Clerc Gavilán, Marcel; Ferré, Michel; Knobloch, Edgar (Amer Physical Soc, 2020)
      Mobility properties of spatially localized structures arising from chaotic but deterministic forcing of the bistable Swift-Hohenberg equation are studied and compared with the corresponding results when the chaotic forcing ...
    • Selección y asignación de equipos de carguío para el cumplimiento de un plan de producción en minería a ... 
      González Riquelme, Héctor Antonio (Universidad de Chile, 2019)
      La minería a cielo abierto es un proceso intensivo en recursos y equipos. La decisión de qué equipo utilizar, cuántos comprar y d\'onde deben operar tiene un fuerte impacto en el valor del negocio. En las operaciones ...
    • Predicción de velocidad en una autopista urbana utilizando estados de tráfico y modelos de inteligencia artificial 
      Véjar Temer, Bastián Alonso (Universidad de Chile, 2019)
      Cada día millones de Santiaguinos se desplazan a sus respectivos trabajos y estudios, en donde miles de ellos utilizan la autopista central, la autopista concesionada mas grande de la región como la vía de transporte para ...
    • Achieving transparency in public decision making processes via verifiable Randomness 
      Csori Pinto, Constanza Andrea (Universidad de Chile, 2019)
      This work is motivated by providing accountability to public institutions using creative and practical new combinations of cryptographic and technological tools. The need for accountability arises from multiple fronts on ...
    • Bayesian identification of electromechanical properties in piezoelectric energy harvesters 
      Peralta, Patricio; Ruiz, Rafael O.; Taflanidis, Alexandros A. (Elsevier, 2020)
      The model updating of the electro-mechanical properties of Piezoelectric Energy Harvesters (PEHs) using experimental data within a Bayesian inference setting is discussed. The implementation requires: a predictive model ...
    • Morfotectónica de la zona costera de Chile Central (32°-33°S) mediante análisis numérico de terreno 
      Saavedra Díaz, Claudio Nicolás (Universidad de Chile, 2019)
      El área de estudio corresponde a la zona costera de Chile central, entre los 32°S y 33°S, y se ubicada en la parte donde el montes submarinos de la placa oceánica de Nazca asociados al Ridge de Juan Fernández subductan ...
    • A tip for landscape riders: multi-field inflation can fulfill the swampland distance conjecture 
      Bravo, Rafael; Palma, Gonzalo A.; Riquelme, Simón (IOP, 2020)
      We study how both the swampland distance conjecture and the Lyth bound affect the parameter space of multi-field models of inflation. A generic feature of multi-field inflation is that the geodesic distance [Delta phi](G) ...
    • A new hybrid heuristic algorithm for the Precedence Constrained Production Scheduling Problem: A mining application 
      Jélvez, Enrique; Morales Varela, Nelson; Nancel Penard, Pierre; Cornillier, Fabien (Elsevier, 2020)
      In this work we address the Precedence Constrained Production Scheduling Problem (PCPSP), the problem of scheduling tasks in such a way that total profit is maximized, while satisfying conditions such as precedence constraints ...
    • A hot terrestrial planet orbiting the bright M dwarf L 168-9 unveiled by TESS 
      Astudillo Defru, N.; Cloutier, R.; Wang, S. X.; Teske, J.; Brahm, R.; Hellier, C.; Ricker, G.; Vanderspek, R.; Latham, D.; Seager, S.; Winn, J. N.; Jenkins, J. M.; Collins, K. A.; Stassun, K. G .; Ziegler, C.; Almenara, J. M.; Anderson, D. R.; Artigau, E.; Bonfils, X.; Bouchy, F.; Briceño, C.; Butler, R. P.; Charbonneau, D.; Conti, D. M.; Crane, J.; Crossfield, I. J. M.; Davies, M.; Delfosse, X.; Diaz, R. F.; Doyon, R.; Dragomir, D.; Eastman, J. D.; Espinoza, N.; Essack, Z.; Feng, F.; Figueira, P.; Forveille, T.; Gan, T.; Glidden, A.; Guerrero, N.; Hart, R.; Henning, Th; Horch, E. P.; Isopi, G.; Jenkins, James S.; Jordan, A.; Kielkopf, J. F.; Law, N.; Lovis, C.; Mallia, F.; Mann, A. W .; de Medeiros, J. R.; Melo, C.; Mennickent, R. E .; Mignon, L.; Murgas, F.; Nusdeo, D. A.; Pepe, F.; Relles, H. M.; Rose, M.; Santos, N. C.; Segransan, D.; Shectman, S.; Shporer, A.; Smith, J. C.; Torres, P.; Udry, S.; Villasenor, J.; Winters, J. G.; Zhou, G. (EDP Sciences, 2020)
      We report the detection of a transiting super-Earth-sized planet (R = 1.39 +/- 0.09 R-circle plus) in a 1.4-day orbit around L 168-9 (TOI-134), a bright M1V dwarf (V = 11, K = 7.1) located at 25.15 +/- 0.02 pc. The host ...
    • The interaction between active crustal faults and volcanism: A case study of the Liquiñe-Ofqui Fault Zone ... 
      Díaz Alvarado, Daniel; Zuñiga, Felipe; Castruccio Álvarez, Angelo (Elsevier, 2020)
    • Transition to spatiotemporal intermittency and defect turbulence in systems under translational coupling 
      Álvarez Garrido, F.; Clerc Gavilán, Marcel; González Cortes, Gregorio (American Physical Society, 2020)
      Out of equilibrium systems under the influence of enough energy injection exhibit complex spatiotemporal behaviors. Based on a liquid crystal light valve experiment with translational optical feedback, we observe propagation, ...
    • When gas dynamics decouples from galactic rotation: characterizing ism circulation in disk galaxies 
      Utreras, José; Blanc, Guillermo; Escala Astorquiza, Andrés; Meidt, Sharon; Emsellem, Eric; Bigiel, Frank; Glover, Simon C.O.; Henshaw, Jonathan; Hygate, Alex; Diederik Kruijssen, J. M.; Rosolowsky, Erik; Schinnerer, Eva; Schruba, Andreas (IOP Publishing, 2020)
      In galactic disks, galactic rotation sets the bulk motion of gas, and its energy and momentum can be transferred toward small scales. Additionally, in the interstellar medium, random and noncircular motions arise from ...
    • Two-dimensional optical chimera states in an array of coupled waveguide resonators 
      Clerc Gavilán, Marcel; Coulibaly, S.; Ferré, M. A.; Tlidi, M. (American Institute of Physics, 2020)
      Two-dimensional arrays of coupled waveguides or coupled microcavities allow us to confine and manipulate light. Based on a paradigmatic envelope equation, we show that these devices, subject to a coherent optical injection, ...
    • Thick, strong sediment subduction along south-central Chile anditsrole ingreat earthquakes 
      Olsen, Kelly M.; Bangs, Nathan L.; Tréhu, Anne M.; Han, Shuoshuo; Arnulf, Adrien; Contreras Reyes, Eduardo (Elsevier, 2020)
      The south-central Chile margin experienced the largest and sixth largest earthquakes ever recorded - the 1960 Mw 9.5 Valdivia and 2010 Mw 8.8 Maule megathrust earthquakes, respectively. In early 2017, we conducted a seismic ...