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Análisis de la predictibilidad de las concentraciones anuales de PM2.5 en Quito, aplicando la entropía de Kolmogórov-Sinai.
(Escuela Superior Politécnica de Chimborazo, 2019-12-23)
The particulate material of 2.5 microns known as PM2.5 is found in urban air, mainly due to vehicular contamination. The health effects are irreversible because by their size it can permanently lodge in the pulmonary ...
Towards a definition of the Quantum Ergodic Hierarchy: Kolmogorov and Bernoulli systems
(Elsevier, 2014-01)
In this paper we translate the two higher levels of the Ergodic Hierarchy [1], the Kolmogorov level and the Bernoulli level, to quantum language. Moreover, this paper can be considered as the second part of [2]. As in paper ...
Mathematical modeling and control of population systems: Applications in biological pest control
(Elsevier B.V., 2008-07-01)
The aim of this paper is to apply methods from optimal control theory, and from the theory of dynamic systems to the mathematical modeling of biological pest control. The linear feedback control problem for nonlinear systems ...
Global dynamics of stationary solutions of the extended Fisher-Kolmogorov equation
(American Institute of Physics (AIP), 2011-11-01)
In this paper we study the fourth order differential equation d(4)u/dt(4) + q d(2)u/dt(2) + u(3) - u = 0, which arises from the study of stationary solutions of the Extended Fisher-Kolmogorov equation. Denoting x = u, y = ...
An algebraic study of the kolmogorov entropy
(Universidad Nacuional de Colombia; Sociedad Colombiana de matemáticas, 1976)
Algunos de los resultados básicos sobre la entropía de Kolmogarov son obtenidos dentro del formalismo de C* -algebras. , siendo la C* -algebra conmutativa o no. Así obtenemos una teoría que incluye sistemas clásicos y cuánticos.
Population persistence in weakly-coupled sinks
(Elsevier B.V., 2012-01-01)
consider a single species population obeying a saturated growth model with spatial diffusion taken into account explicitly. Strong spatial heterogeneity is considered, represented by a position dependent reproduction rate. ...
Understanding turbulence through numerical simulations
(Elsevier Science, 2004-12)
Turbulence is one of the important problems in classical physics that still remain unsolved. The Navier–Stokes equations have been studied for almost two centuries now, and although they seem to properly describe the ...
Pesin-type relation for subexponential instability
(Iop Publishing LtdBristolInglaterra, 2012)
Dynamical estimates of chaotic systems from Poincare recurrences
(AMER INST PHYSICS, 2009)
We show a function that fits well the probability density of return times between two consecutive visits of a chaotic trajectory to finite size regions in phase space. It deviates from the exponential statistics by a small ...