Impulsive Equations
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Damage of plates due to impact, dynamic pressure and explosive loads
It is the purpose of this article to present design equations which can be used to predict the damage of ductile plating when subjected to mass impact, dynamic pressure or impulsive loadings. The external loadings are sufficiently severe to produce inelastic material behaviour and produce finite transverse displacement, or geometry change, effects. The damag
Lat. Am. j. solids struct.. Publicado em: 2013-07
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2. Equações diferenciais funcionais em medida e equações dinâmicas funcionais impulsivas em escalas temporais / Measure functional differential equations and impulse functional dynamic equations on time scales
O objetivo deste trabalho é investigar e desenvolver a teoria de equações dinâmicas funcionais impulsivas em escalas temporais. Mostramos que estas equações representam um caso especial de equações diferenciais funcionais em medida impulsivas. Também, apresentamos uma relação entre estas equações e as equações diferenciais funcionais em medida
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/09/2012
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3. Dynamical behavior of a pest management model with impulsive effect and nonlinear incidence rate
In this paper, we consider the pest management model with spraying microbial pesticide and releasing the infected pests, and the infected pests have the function similar to the microbial pesticide and can infect the healthy pests, further weaken or disable their prey function till death. By using the Floquet theory for impulsive differential equations, we sh
Computational & Applied Mathematics. Publicado em: 2011
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4. Periodic boundary value problems for impulsive neutral differential equations with multi-deviation arguments
We develop the impulsive inequality and the classical lower and upper solutions, and establish the comparison principles. By using these results and the monotone iterative technique, we obtain the existence of solutions of periodic boundary value problems for a class of impulsive neutral differential equations with multi-deviation arguments. An example is gi
Computational & Applied Mathematics. Publicado em: 2010
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5. Método da média para equações diferenciais funcionais retardadas impulsivas via equações diferenciais generalizadas / Averaging method for retarded functional differential equations with impulses by generalized ordinary differential equations
In this present work, we condider the following initial value problem for a retarded functional differential equation with impulses { x POINT= varepsilonf (t, x IND.t), t DIFFERENTt IND. k, DELTAx(t IND. k) = varepsilonI IND. k(x ( t IND.k)), k = 0, 1, 2, ... x IND. t IND.0= phi, where f está defined in a open set OMEGAde R x G POT. -([- r, 0], R POT. n), r
Publicado em: 2009
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6. The Black-Scholes equation with impulse action / A equação de Black-Scholes com ação impulsiva
Impulsos são perturbações abruptas que ocorrem em curto espaço de tempo e podem ser consideradas instantâneas. E os mercados financeiros estão sujeitos a choques bruscos como mudanças de governos, quebra de empresas, entre outros. Assim, é natural considerarmos a ação de tais eventos na precificação de ativos financeiros. Nosso objetivo neste tra
Publicado em: 2008
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7. A unified discrete-time approach to the state space representation of aeroelastic systems.
In complex flow situations, it is common to use numerical tools to evaluate the aerodynamic unsteady behavior. The present work presents an alternate formulation for the state space representation of aeroelastic systems based on digital control theory that is shown to be effective and accurate for the coupling of numerical solutions with such systems. The ap
Publicado em: 2007
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8. Orbital control of a satellite using the gravity of the Moon
In this paper, a study is made in the problem of the orbital control of an Earth´s satellite using the gravity of the Moon. The main objective is to study a technique to decrease the fuel consumption of a plane change maneuver to be performed in a satellite that is in orbit around the Earth. The main idea of this approach is to send the spacecraft to the Mo
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2006-03
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9. Teoria de semigrupos e aplicações a equações impulsivas com retardamento dependendo do estado / Semigroup theory and applications to impulsive differential equation with state-dependent delay
In this work we stablish the existence of mild solutions for an impulsive abstract functional differential equation with state-dependent delay described in the form x POT. PRIME(t) = Ax(t) + f(t;x IND. p(t, xt)), t BELONGSI = [0,a], x IND. 0=\varphi IS CONTAINEDB, DELTAx(t IND. i) = I IND.ii(x IND.i); i = 1, ...n, where A is the infinitesimal generator of a
Publicado em: 2006
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10. Sistemas impulsivos com retardamento: soluções periódicas. / Periodic solutions of an impulsive differential system with delay: an Lp approach.
We prove the existence of periodic solutions of some retarded functional differential equations subjected to impulsive self-supporting conditions. Due to the impulses, solutions exhibit discontinuites of the first kind and this forces the consideration of more general phase spaces than C([-r,0],Rn). We show that periodic solutions can emanate from the origin
Publicado em: 2000
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11. Estimação adaptativa de parametros atraves de minimos quadrados sujeitos a restrições lineares de igualdade
This work is concerned with the adaptive parameter estimation via linear least-squares subject to linear equality constraints. Recursive algorithms are proposed for solution of least-squares problems with exponential data weighting and sliding data window, by combining normal equations and orthogonal factorization with the null space of the constraint matrix
Publicado em: 1994