Zobrazeno 1 - 10
of 146
pro vyhledávání: '"LAZO, M. J."'
Publikováno v:
ENVIRONMENTAL FLUID MECHANICS, v. 24, p. 489-504, 2024
In this work, eddy diffusivity is derived from the energy spectra for the stable and convective regimes in the planetary boundary layer. The energy spectra are obtained from a spectral model for the inertial subrange that considers the anomalous beha
Externí odkaz:
http://arxiv.org/abs/2408.10168
In the present work, we propose an advection-diffusion equation with Hausdorff deformed derivatives to stud the turbulent diffusion of contaminants in the atmosphere. We compare the performance of our model to fit experimental data against models wit
Externí odkaz:
http://arxiv.org/abs/2006.16050
In the present work, by taking advantage of a so-called practical limitation of fractional derivatives, namely, the absence of a simple chain and Leibniz's rules, we proposed a generalized fractional calculus of variation where the Lagrangian functio
Externí odkaz:
http://arxiv.org/abs/1908.11414
In the present work, we formulate a generalization of the Noether Theorem for action-dependent Lagrangian functions. The Noether's theorem is one of the most important theorems for physics. It is well known that all conservation laws, \textrm{e.g.},
Externí odkaz:
http://arxiv.org/abs/1906.06182
In the present work, we propose a new parameterization for the concentration flux using fractional derivatives. The fractional order differential equation in the longitudinal and vertical directions is used to obtain the concentration distribution of
Externí odkaz:
http://arxiv.org/abs/1812.02038
In the present work, we investigate the potential of fractional derivatives to model atmospheric dispersion of pollutants. We propose simple fractional differential equation models for the steady state spatial distribution of concentration of a non-r
Externí odkaz:
http://arxiv.org/abs/1702.06345
The interplay between quantum fluctuations and disorder is investigated in a spin-glass model, in the presence of a uniform transverse field $\Gamma$, and a longitudinal random field following a Gaussian distribution with width $\Delta$. The model is
Externí odkaz:
http://arxiv.org/abs/1701.04373
Publikováno v:
Phys. Rev. B 93, 224206 (2016)
The behavior of the nonlinear susceptibility $\chi_3$ and its relation to the spin-glass transition temperature $T_f$, in the presence of random fields, are investigated. To accomplish this task, the Sherrington-Kirkpatrick model is studied through t
Externí odkaz:
http://arxiv.org/abs/1606.01186
Autor:
Frederico, G. S. F., Lazo, M. J.
We obtain a nonsmooth higher-order extension of Noether's symmetry theorem for variational isoperimetric problems with delayed arguments. The result is proved to be valid in the class of Lipschitz functions, as long as the delayed higher-order Euler-
Externí odkaz:
http://arxiv.org/abs/1603.06029
In the present work, we obtain the constants of motion for isoperimetric variational problems with time delay. We consider a constrained optimization problem where the Lagrangian function defining the functional depends on time delayed arguments. We
Externí odkaz:
http://arxiv.org/abs/1603.02335