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Asymptotics for second order delayed differential equations
(Universidad Catolica del Norte, 2007)
In this work we present a way to find asymptotic formulas for some solutions of second order linear differential equations with a retarded functional perturbation.
Weakly (and not so weakly) bound states of a relativistic particle in one dimension
(Elsevier Science, 2018-08)
We present the first exact calculation of the energy of the bound state of a one dimensional Dirac massive particle in weak short-range arbitrary potentials, using perturbation theory to fourth order (the analogous result ...
Third-body perturbation in the case of elliptic orbits for the disturbing body
(Hindawi Publishing Corporation, 2008-01-01)
This work presents a semi-analytical and numerical study of the perturbation caused in a spacecraft by a third-body using a double averaged analytical model with the disturbing function expanded in Legendre polynomials up ...
Third-body perturbation in the case of elliptic orbits for the disturbing body
(Hindawi Publishing Corporation, 2008-01-01)
This work presents a semi-analytical and numerical study of the perturbation caused in a spacecraft by a third-body using a double averaged analytical model with the disturbing function expanded in Legendre polynomials up ...
Nucleophilicity index from perturbed electrostatic potentials
(2007)
We introduce and test a nucleophilicity index as a new descriptor of chemical reactivity. The index is derived from a perturbation model for the interaction between the nucleophile and a positive test charge. The computational ...
Non-adiabatic perturbations in decaying vacuum cosmology
(2011)
We investigate a spatially flat Friedmann-Lemaˆıtre-Robertson-Walker cosmology
in which a decaying vacuum term causes matter production at late times. Assuming a
decay proportional to the Hubble rate, the ratio of the ...
Fuerzas nucleares con centro repulsivo y el modelo de capas de núcleo. Efectos de segundo orden
(Revista Mexicana de Física, 2009)
On the effects of each term of the geopotential perturbation along the time I: Quasi-circular orbits
(Elsevier B.V., 2014-09-15)
This paper provides a useful new method to determine minimum and maximum range of values for the degree and order of the geopotential coefficients required for simulations of orbits of satellites around the Earth. The ...
Determinação da solução ótima do problema de fluxo de potência ótimo via análise de sensibilidade
(Sociedade Brasileira de Pesquisa Operacional, 2005-12-01)
Neste trabalho propomos uma abordagem para a resolução do problema de Fluxo de Potência Ótimo (FPO) perturbado. A metodologia consiste na utilização de análise de sensibilidade para estimar novas soluções depois de ocorridas ...