Results 71 to 80 of about 20,477 (206)

Исследование затухания решений уравнения Макки ‒ Гласса с импульсным воздействием [PDF]

open access: yes
Розглядається функціонально-диференціальне рівняння Маккіа – Гласса із змінними коефіцієнтами, непостійним запізнюванням і імпульсною дією. Одержано умови згасання позитивних розв'язків даного рівняння.We consider a functional-differential Mackey ...
Nenya, Oleksandr Ivanovich   +2 more
core  

Spreading Speed, Traveling Waves, and Minimal Domain Size in\ud Impulsive Reaction-diffusion Models [PDF]

open access: yes, 2012
How growth, mortality, and dispersal in a species affect the species’ spread and persistence constitutes a central problem in spatial ecology. We propose impulsive reaction-diffusion equation models for species with distinct reproductive and dispersal ...
Lewis, M. A., Li, B.
core  

p-Moment stability of functional differential equations with random impulses

open access: yesComputers & Mathematics with Applications, 2006
Functional differential equations with random impulses \[ x'(t)= f(t, x_t),\;t\geq t_0,\;t\neq\xi_k,\;x(\xi_k)= I(\tau_k, x(\xi^-_k)),\;k= 1,2,\dots, x_{t_0}= \varphi\tag{1} \] are considered. The following stability conditions were obtained by using Lyapunov's method with Razumikhin condition. Theorem. Let \(x(t)\) be a solution of system (1) and \(p>
Shujin Wu, Xiaolin Guo, Yong Zhou
openaire   +2 more sources

Contact transformations and the theory of optimal control [PDF]

open access: yes
Contact transformation of independent and dependent variables of Hamilton-Jacobi ...
Dezur, R. S., Haynes, G. W.
core   +1 more source

Distributions with dynamic test functions and multiplication by discontinuous functions

open access: yes, 2006
As follows from the Schwartz Impossibility Theorem, multiplication of two distributions is in general impossible. Nevertheless, often one needs to multiply a distribution by a discontinuous function, not by an arbitrary distribution. In the present paper
Derr, V., Kinzebulatov, D.
core   +4 more sources

Impulsive functional differential equations with variable times

open access: yesComputers & Mathematics with Applications, 2004
The authors investigate the existence of solutions to a first-order retarded functional-differential equation with impulses. The case including higher-order equations and studied by the same authors can be found in [Dyn. Syst. Appl. 12, No. 3--4, 383--392 (2003; Zbl 1073.34092)].
Benchohra, M.   +3 more
openaire   +1 more source

Development of a method for optimal maneuver analysis of complex space missions [PDF]

open access: yes
A system that allows mission planners to find optimal multiple-burn space trajectories easily is described. Previously developed methods with different gravity assumptions perform the optimization function.
Dawkins, G. S.   +2 more
core   +1 more source

Home - About - Disclaimer - Privacy