Browsing by Author "Rogan Castillo, José"
Now showing items 1-20 of 29
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(Amer Geophysical Union, 2021)We propose a method, based on Neural Networks, that detects the nonlinear robust interplanetary solar wind variables, with varying delays, driving the coupled behavior of three geomagnetic indices (Dst, AL, and AU). As ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2006-09)Structural and electronic properties of Ti3Si0.5Ge0.5C2 under pressure up to 80 GPa are studied by means of first principles calculation based on density functional theory (DFT). The total energy, lattice parameters and ...
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(AMER INST PHYSICS, 2006-12-07)An alternative strategy to find the minimal energy structure of nanoclusters is presented and implemented. We use it to determine the structure of metallic clusters. It consists in an unbiased search, with a global minimum ...
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(Royal Soc Chemistry, 2015)The planar to three dimensional transition of Au13-nAgn clusters is investigated. To do so the low lying energy configurations for all possible concentrations (n values) are evaluated. Many thousands of possible conformations ...
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(Elsevier, 2013)
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(2007)A bidimensional cellular automaton model is used to simulate the process of evacuation of pedestrians in a room with fixed obstacles. A floor field is defined so that moving to a cell with lower floor field means approaching ...
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Characterization of the nontrivial and chaotic behavior that occurs in a simple city traffic model (2010)Urban traffic is interesting not only due to its obvious social and economical impact, but also due to its complexity. It is not unusual for drivers to get stuck in a traffic jam that apparently emerged from nowhere. ...
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(Elsevier, 2014)We simulate traffic in a city by means of the evolution of a row of interacting cars, using a cellular automaton model, in a sequence of traffic lights synchronized by a ‘‘green wave’’. When our initial condition is a ...
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(SPRINGER, 2011-01)Collision processes between a single gold atom and a gold cluster are investigated by means of ab initio techniques. The targets we consider are minimum energy 13 gold atom clusters. The kinetic energy of the projectile ...
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(1991)We reanalyze a recent paper by Kim et al. [Phys. Rev. B 38, 5716 (1988)] regarding the kinetics of hydrogen uptake by niobium surfaces. We show that the kinetic analysis performed by these authors is incorrect. © 1991 The ...
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(1988)Although the role played by cold ions on the electromagnetic proton-cyclotron instability has been thoroughly investigated, there are some aspects which deserve further attention. Moreover, since the presence of ion cyclotron ...
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(1995)We put forward a model of tightly bound electrons in a bipartite lattice with repulsive interaction between electrons of same spin located in neighboring sites. Assuming external magnetic field the stationary states are ...
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(Nature Publishing Group, 2018)© 2018, The Author(s).A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has not been fixed in the paper.
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(SOC MEXICANA FISICA, 2008-04)A systematic study of the colineal and no-colineal magnetic properties and the metallic behavior in free standing clusters of Pd-N (2 <= N <= 21) is carried out. We also study the effect of the twinning in clusters on the ...
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(American Physical Society, 2015)The Ehrenfest urn model is extended to a complex directed network, over which a conserved quantity is transported in a random fashion. The evolution of the conserved number of packets in each urn, or node of the network, ...
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(SPRINGER, 2006)The magnetosphere is a multi-scale spatio-temporal complex dynamical system. Self-organization is a possible solution to the seemingly contradicting observation of the repeatable and coherent substorm phenomena with ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2005-11)Copper was removed from an acidic mine drainage (AMD) using a liquid emulsion membrane contactor. The acidic drainage was a harmful natural acidic solution generated by bioleaching and chemical leaching of copper and iron ...
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(The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics, 2007-07)We report a comparative study of the magnetic properties of free-standing PdN clusters (2 ≤ N ≤ 21) obtained through two different theoretical approaches that are extensively employed in electronic structure calculations: ...
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(American Chemical Society, 2018)Palladium nanoparticles are technologically important for catalysis, hydrogen storage, and many other applications. Here, we investigate the mechanical properties of Pd hollow nanoparticles of different sizes and thicknesses ...
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(Amer Inst Physics, 2015)We propose a model of a bus traveling through a sequence of traffic lights, which is required to stop between the traffic signals to pick up passengers. A two dimensional model, of velocity and traveled time at each traffic ...
