Buscar
Mostrando ítems 1-10 de 54
Chawla-Numerov method revisited
(1991-08-27)
The well-known two-step fourth-order Numerov method was shown to have better interval of periodicity when made explicit, see Chawla (1984). It is readily verifiable that the improved method still has phase-lag of order 4. ...
Chawla-Numerov method revisited
(1991-08-27)
The well-known two-step fourth-order Numerov method was shown to have better interval of periodicity when made explicit, see Chawla (1984). It is readily verifiable that the improved method still has phase-lag of order 4. ...
A second order ode with discontinuous coefficients
(Watam PressWaterlooCanadá, 1997)
Sobre la estabilidad asintótica de un problema parabólico de valor inicial
(Universidad Nacuional de Colombia; Sociedad Colombiana de matemáticas, 1993)
In this article we study the asymptotic stability of the solutions of an initial value semilinear problem of Dirichlet type. The linear part consists of an uniformly parabolic second order linear operator. The non-linearity ...
Atitudes e percepções de estudantes e professores de enfermagem frente ao suicídio de adolescentes
(Universidade Federal de Minas GeraisUFMG, 2014-07-11)
Suicide appears as a major cause of death among adolescents and young people in many countries around the world. Therefore, it is necessary to broaden and deepen the studies on the problem, seeking solutions and improving ...
The effectiveness of artificial neural networks in modelling the nutritional ecology of a blowfly species
(2012-04-01)
The larval phase of most blowfly species is considered a critical developmental period in which intense limitation of feeding resources frequently occurs. Furthermore, such a period is characterised by complex ecological ...
Analytic and Geometric Techniques for Non-Integrable Dynamical Systems. Applications to Perturbed Keplerian Models.
(2020)
The present work using analytic and geometric methods to study differential
equations and systems of differential equations. Although some of the tools
developed here are intended to be applied to arbitrary equation, the ...
Characterization of ferric ions diffusion in Fricke gel dosimeters by using inverse problem techniques
(Taylor & Francis Ltd, 2014-10)
Diffusion of ferric ions in ferrous sulfate (Fricke) gels represents one of the main drawbacks of some radiation detectors, such as Fricke gel dosimeters. In practice, this disadvantage can be overcome by prompt dosimeter ...
Modelagem da dispersão de poluentes em meios porosos: caso do aterro de resíduos solidos urbanos de Jacarezinho (PR)
(Universidade Tecnológica Federal do ParanáCuritibaBrasilPrograma de Pós-Graduação em Ciência e Tecnologia AmbientalUTFPR, 2020-02-18)
Municipal solid waste (MSW) disposal systems are still a sanitary and environmental problem. The high concentration of recalcitrant and toxic substances present in liquids arising from the decomposition of waste, mixed or ...