Repositorio Académico de la Universidad de Chile: Recent submissions

Now showing items 35161-35180 of 98753

    • Numerical path integral calculation of the probability function and exit time: An application to non-gradient ... 
      Mora, Fernando; Coullet, Pierre; Rica, Sergio; Tirapegui Zurbano, Enrique (Royal Society Publishing, 2018)
      We provide numerical solutions based on the path integral representation of stochastic processes for nongradient drift Langevin forces in the presence of noise, to follow the temporal evolution of the probability density ...
    • Discovery of a planetary-mass companion within the gap of the transition disk around PDS 70 
      Keppler, M.; Benisty, Myriam; Müller, A.; Henning, Th; Van Boekel, R.; Cantalloube, F.; Ginski, C.; Van Holstein, R.; Maire, A.; Pohl, A.; Samland, M.; Avenhaus, H.; Baudino, J.; Boccaletti, A.; De Boer, J.; Bonnefoy, M.; Chauvin, G.; Desidera, S.; Langlois, M.; Lazzoni, C.; Marleau, G.; Mordasini, C.; Pawellek, N.; Stolker, T.; Vigan, A.; Zurlo, A.; Birnstiel, T.; Brandner, W.; Feldt, M.; Flock, M.; Girard, J.; Gratton, R.; Hagelberg, J.; Isella, A.; Janson, M.; Juhasz, A.; Kemmer, J.; Kral, Q.; Lagrange, Anne Marie; Launhardt, R.; Matter, A.; Ménard, F.; Milli, J.; Mollière, P.; Olofsson, J.; Pérez, L.; Pinilla, P.; Pinte, C.; Quanz, S. P.; Schmidt, T.; Udry, S.; Wahhaj, Z.; Williams, J. P.; Buenzli, E.; Cudel, M.; Dominik, C.; Galicher, R.; Kasper, M.; Lannier, J.; Mesa, D.; Mouillet, D.; Peretti, S.; Perrot, C.; Salter, G.; Sissa, E.; Wildi, F.; Abe, L.; Antichi, J.; Augereau, J.; Baruffolo, A.; Baudoz, P.; Bazzon, A.; Beuzit, J.-L.; Blanchard, P.; Brems, S.; Buey, T.; De Caprio, V.; Carbillet, M.; Carle, M.; Cascone, E.; Cheetham, A.; Claudi, R.; Costille, A.; Delboulbé, A.; Dohlen, K.; Fantinel, D.; Feautrier, P.; Fusco, T.; Giro, E.; Gluck, L.; Gry, C.; Hubin, N.; Hugot, E.; Jaquet, M.; Le Mignant, D.; Llored, M.; Madec, F.; Magnard, Y.; Martínez, P.; Maurel, D.; Meyer, M.; Möller-Nilsson, O.; Moulin, T.; Mugnier, L.; Origné, A.; Pavlov, A.; Perret, D.; Petit, C.; Pragt, J.; Puget, P.; Rabou, P.; Ramos, J.; Rigal, F.; Rochat, S.; Roelfsema, R.; Rousset, G.; Roux, A.; Salasnich, B.; Sauvage, J.; Sevin, A.; Soenke, C.; Stadler, E.; Suarez, M.; Turatto, M.; Weber, L. (EDP Sciences, 2018)
      Context. Young circumstellar disks are the birthplaces of planets. Their study is of prime interest to understand the physical and chemical conditions under which planet formation takes place. Only very few detections of ...
    • Dissipative structures in matter out of equilibrium: From chemistry, photonics and biology, the legacy of ... 
      Tlidi, M.; Clerc Gavilán, Marcel; Panajotov, K. (Royal Society Publishing, 2018)
    • Dissipative structures induced by photoisomerization in a dye-doped nematic liquid crystal layer 
      Andrade Silva, Ignacio Javier; Bortolozzo, Umberto; Castillo Pinto, Camila; Clerc Gavilán, Marcel; González Cortés, Gregorio; Residori, S.; Wilson, Mario (Royal Society Publishing, 2018)
      Order–disorder phase transitions driven by temperature or light in soft matter materials exhibit complex dissipative structures. Here, we investigate the spatio-temporal phenomena induced by light in a dye-doped nematic ...
    • Observation and modelling of vegetation spirals and arcs in isotropic environmental conditions: Dissipative ... 
      Tlidi, M.; Clerc Gavilán, Marcel; Escaff, D.; Couteron, P.; Messaoudi, M.; Khaffou, M.; Makhoute, A. (Royal Society Publishing, 2018)
      We report for the first time on the formation of spirals like vegetation patterns in isotropic and uniform environmental conditions. The vegetation spirals are not waves and they do not rotate. They belong to the class of ...
    • Symmetry exploitation for online machine covering with bounded migration 
      Gálvez, Waldo; Soto, José; Verschae, José (Schloss Dagstuhl- Leibniz-Zentrum fur Informatik GmbH, Dagstuhl Publishing, 2016)
      Online models that allow recourse are highly effective in situations where classical models are too pessimistic. One such problem is the online machine covering problem on identical machines. In this setting, jobs arrive ...
    • Bonferroni induced heavy operators in ERM decision-making: A case on large companies in Colombia 
      Blanco Mesa, Fabio; León Castro, Ernesto; Merigó Lindahl, José (Elsevier Ltd, 2018)
      Averaging aggregation operators analyse a set of data providing a summary of the results. This study focuses on the Bonferroni mean and the induced and heavy aggregation operators. The aim of the work is to present new ...
    • Quasi-polynomial time approximation schemes for packing and covering problems in planar graphs 
      Pilipczuk, Michał; Van Leeuwen, Erik; Wiese, Andreas (Schloss Dagstuhl- Leibniz-Zentrum fur Informatik GmbH, Dagstuhl Publishing, 2018)
      We consider two optimization problems in planar graphs. In Maximum Weight Independent Set of Objects we are given a graph G and a family D of objects, each being a connected subgraph of G with a prescribed weight, and the ...
    • A new method for identification of fuzzy models with controllability constraints 
      Gutiérrez, Leonel; Muñoz-Carpintero, Diego; Valencia, Felipe; Sáez, Doris (Elsevier Ltd, 2018)
      Takagi–Sugeno fuzzy models are cataloged as universal approximators and have been proven to be a powerful tool for the prediction of systems. However, in certain cases they may fail to inherit the main properties of a ...
    • Xylem structure and function in three grapevine varieties 
      Quintana-Pulido, Constanza; Villalobos-González, Luis; Muñoz, Mariana; Franck, Nicolás; Pastenes, Claudio (Instituto de Investigaciones Agropecuarias, INIA, 2018)
      Xylem vessels are responsible for conducting water, in a metastable state, to the transpiring leaves. As tension increases, hydraulic failure may occur. At any given tension, the resistance of the xylem vessels to cavitation ...
    • Predictive Control Strategy for an Induction Machine fed by a 3L-NPC Converter with Fixed Switching Frequency ... 
      Mora, Andrés; Donoso, Felipe; Urrutia, Matías; Angulo, Alejandro; Cárdenas, Roberto (Institute of Electrical and Electronics Engineers Inc., 2018)
      In this paper, a model predictive control (MPC) strategy to drive an induction machine (1M) using a three-level neutral point-clamped (3L-NPC) converter is investigated. The proposed strategy is a space vector modulation ...
    • Interior regularity results for zeroth order operators approaching the fractional Laplacian 
      Felmer Aichele, Patricio; dos Prazeres, Disson; Topp, Erwin (Springer New York LLC, 2018)
      In this article we are interested in interior regularity results for the solution μ∈∈ C(Ω¯) of the Dirichlet problem {μ=0inΩc,I∈(μ)=f∈inΩ where Ω is a bounded, open set and f∈∈ C(Ω¯) for all є ∈ (0, 1). For some σ ∈ (0, ...
    • Publisher Note: Circumbinary, not transitional: On the spiral arms, cavity, shadows, fast radial flows, ... 
      Price, Daniel J.; Cuello, Nicolás; Pinte, Christophe; Mentiplay, Daniel; Casassus Montero, Simón; Christiaens, Valentin; Kennedy, Grant M.; Cuadra, Jorge; Sebastian Perez, M.; Marino, Sebastian; Armitage, Philip J.; Zurlo, Alice; Csendes Juhasz, Attila; Ragusa, Enrico; Laibe, Guillaum (Oxford University Press, 2018)
    • System-level assessment of reliability and resilience provision from microgrids 
      Zhou, Yutian; Panteli, Mathaios; Moreno, Rodrigo; Mancarella, Pierluigi (Elsevier Ltd, 2018)
      Microgrids are emerging to coordinate distributed energy resources and locally increase reliability to expected events and resilience to extreme events. Furthermore, by deploying their inherent flexibility, grid-connect ...
    • Design of fuzzy robust control strategies for a distributed solar collector field 
      Bayas, Antonio; Škrjanc, Igor; Sáez, Doris (Elsevier Ltd, 2018)
      This paper presents novel control strategies using Takagi–Sugeno fuzzy models combined with a parametric uncertainty robust control approach to address both the nonlinearities of a process and the disturbances that act on ...
    • The impact of a buried high-velocity layer in the seismic site amplification of the city of Llolleo, Chile 
      Sáez, Miguel; Pastén, César; Ruiz Tapia, Sergio; Salomón, José (Seismological Society of America, 2018)
      We studied the influence of a buried high-velocity layer (HVL) on the surface ground amplification of the city of Llolleo, Chile, where large peak ground accelerations were observed during the 1985 Mw 8.0 Valparaiso and ...
    • Uncertainty in the measurement of toxic metals mobility in mining/mineral wastes by standardized BCR®SEP 
      Caraballo Monge, Manuel; Serna, Alexander; Macías, Francisco; Pérez López, Rafael; Ruiz-Cánovas, Carlos; Richter Duk, Pablo; Becerra Herrera, Mercedes (Elsevier B.V., 2018)
      Mining residues management is one of the greatest challenges for mining companies around the world. The increasing consciousness of the general public and governments about the potential threat that those residues can pose ...
    • Mixed order fractional observers for minimal realizations of linear time-invariant systems 
      Duarte-Mermoud, Manuel; Gallegos, Javier; Aguila Camacho, Norelys; Castro-Linares, Rafael (MDPI AG, 2018)
      Adaptive and non-adaptive minimal realization (MR) fractional order observers (FOO) for linear time-invariant systems (LTIS) of a possibly different derivation order (mixed order observers, MOO) are studied in this paper. ...
    • Observability of planet-disc interactions in CO kinematics 
      Pérez, Sebastián; Casassus Montero, Simón; Benítez-Llambay, P. (Oxford University Press, 2018)
      Empirical evidence of planets in gas-rich circumstellar discs is required to constrain giant planet formation theories. Here we study the kinematic patterns which arise from planet- disc interactions and their observability ...
    • Weakest precondition reasoning for expected runtimes of randomized algorithms 
      Kaminski, Benjamin; Katoen, Joost; Matheja, Christoph; Olmedo, Federico (Association for Computing Machinery, 2018)
      This article presents a wp–style calculus for obtaining bounds on the expected runtime of randomized algorithms. Its application includes determining the (possibly infinite) expected termination time of a randomized algorithm ...