Results 21 to 30 of about 1,176,120 (248)

Moving Front Solution of the Reaction-Diffusion Problem

Моделирование и анализ информационных систем, 2017
In  this  paper,  we study  the  moving  front solution  of the  reaction-diffusion  initialboundary value problem  with a small diffusion coefficient. Problems  in such statements can be used to model physical processes associated  with the propagation ...
Evgeny A. Antipov, Vladimir T. Volkov, Natalia T. Levashova, Nikolay N. Nefedov   +3 more
doaj   +1 more source

GLOBAL ASYMPTOTIC STEP LIKE SOLUTIONS TO THE SINGULARLY PERTURBED KORTEWEG-DE VRIES EQUATION WITH VARIABLE COEFFICIENTS

Міжнародний науково-технічний журнал "Проблеми керування та інформатики", 2020
The paper deals with the Korteweg-de Vries equation with variable coefficients and a small parameter at the highest derivative. Similar equations arise while mathematical simulation of wave processes in inhomogeneous media with variable characteristics ...
С.І. Ляшко, В.Г. Самойленко, Юл.І. Самойленко, І.В. Гап’як, Н.І. Ляшко, М.С. Орлова   +5 more
doaj   +1 more source

A boundary jumps phenomenon in the integral boundary value problem for singularly perturbed differential equations

Қарағанды университетінің хабаршысы. Математика сериясы, 2020
The article is devoted to the study of the asymptotic behavior of solving an integral boundary value problem for a third - order linear differential equation with a small parameter for two higher derivatives, provided that the roots of the "additional ...
N.U. Bukanay, A.E. Mirzakulova, M.K. Dauylbayev, K.T. Konisbayeva   +3 more
doaj  

Singularly perturbed linear oscillator with piecewise-constant argument

Вестник КазНУ. Серия математика, механика, информатика, 2018
The Cauchy problem for singularly perturbed linear differential equation the second order with piecewise-constant argument is considered in the article.
M. U. Akhmet, M. K. Dauylbayev, A. E. Mirzakulova, N. Atakhan   +3 more
doaj   +1 more source

Internal boundary layer in a singularly perturbed problem of fractional derivative

Қарағанды университетінің хабаршысы. Математика сериясы, 2020
This paper is devoted to the study of internal boundary layer. Such motions are often associated with effect of boundary layer, i.e. low flow viscosity affects only in a narrow parietal layer of a streamlined body, and outside this zone the flow is as ...
B.T. Kalimbetov, A.N. Temirbekov, B.I. Yeskarayeva   +2 more
doaj   +1 more source

An asymptotic solution for the SIS epidemic model, taking into account migration and diffusion [PDF]

Известия высших учебных заведений: Прикладная нелинейная динамика
The purpose of this work is to propose and investigate a simple and effective model of an epidemic in an animal population that takes into account migration along the plane of both diseased and healthy individuals. Within the framework of this model, the
Rassadin, Aleksandr Eduardovich
doaj   +1 more source

Numerical Analysis of the Control Problem for a Queuing System with a Small Parameter on a Non-Uniform Grid Scheme

Современные информационные технологии и IT-образование, 2023
The shortest queue problem (SQP) is widely applied for load-balancing procedure in telecommunication systems. Now SQP is one of the most intensively studied and many investigators give full consideration to the SQP research for large-scale queueing ...
Shakhmurad Kanzitdinov, Mohamed Adel Bouatta, Sergey Vasilyev, Galina Tsareva   +3 more
doaj   +1 more source

The Cauchy problem for singularly perturbed higher-order integro-differential equations

Вестник КазНУ. Серия математика, механика, информатика, 2019
The article is devoted to research the Cauchy problem for singularly perturbed higher-order linear integro-differential equation with a small parameter at the highest derivatives, provided that the roots of additional characteristic equation have ...
A. E. Mirzakulova, M. K. Dauylbaev, M. U. Akhmet, A. K. Dzhetpisbaeva   +3 more
doaj   +1 more source

Are Fertility Preservation Procedures Before Gonadotoxic Therapy and Hematopoietic Stem Cell Transplantation Feasible and Safe in Very Young Children? A Retrospective Cohort Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Fertility preservation (FP) is increasingly integrated into the care of pediatric patients exposed to gonadotoxic therapy or conditioning for hematopoietic stem cell transplantation (HSCT), yet perioperative data in infants and toddlers remain scarce.
Kerstin Saalabian, Yannick Braun, Till‐Martin Theilen, Anke Barnbrock, Theresa Rohm, Fabienne Hammant, Nicole Sänger, Aynura Abbasova‐Semiz, Jan‐Henning Klusmann, Thomas Klingebiel, Udo Rolle, Peter Bader, Henning C. Fiegel, Andrea Jarisch   +13 more
wiley   +1 more source

Construction of the solution of the boundary value problem for integro differential equation with a small parameter in highest derivatives

Қарағанды университетінің хабаршысы. Математика сериясы, 2016
The article is devoted to the study analytical formula of solution of boundary value problem with initial jump for a linear integro-diferential equation of n + m order with a small parameter in the highest derivatives.
A.E. Mirzakulova, N. Atakhan
doaj   +1 more source