Results 41 to 50 of about 102,915 (146)
, 2009 Small world network models have been effective in capturing the variable behaviour of reported case data of the SARS coronavirus outbreak in Hong Kong during 2003.
Small, M +7 more
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AppliedMath, 2022 A nonlocally perturbed linear Schrödinger equation with a small parameter was derived under the assumption of low-level fractionality by using one of the known general nonlocal wave equations with an infinite power-law memory.
Stanislav Yu. Lukashchuk
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Design Parameters for a Small-Gauge Fragmatome
Translational Vision Science & Technology, 2019 Manufacturers of surgical instrumentation have increasingly sought to decrease the size of ophthalmic surgical instruments. We have used finite element modeling to model the stress and strain present in a fragmatome as a function of driving frequency and fragmatome dimensions.Finite element calculations using the COMSOL Multiphysics system v3.5 were ...
Foster, William J., Wang, Jijo Jizhou
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The small parameter method in the optimisation of a quasi-linear dynamical system problem
Журнал Белорусского государственного университета: Математика, информатика, 2022 We consider an optimisation problem for the transient process in a quasi-linear dynamical system (contains a small parameter at non-linearities) with a performance index that is a linear combination of energy costs and the duration of the process.
Anatoly I. Kalinin +2 more
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Sensitivity analysis and parameter estimation for distributed hydrological modeling: potential of variational methods [PDF]
, 2009 Variational methods are widely used for the analysis and control of computationally intensive spatially distributed systems. In particular, the adjoint state method enables a very efficient calculation of the derivatives of an objective function ...
Dartus, Denis +8 more
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Моделирование и анализ информационных систем, 2017 We consider a boundary-value problem for a singularly perturbed parabolic equation with an initial function independent of a perturbation parameter in the case where a degenerate stationary equation has smooth possibly intersecting roots.
Mikhail A. Terentyev
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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 +3 more
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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 +5 more
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The reflecting function and the small parameter method
Applied Mathematics Letters, 2008 The aim of this work is to combine the method of the reflecting function and the perturbation method to obtain sufficient conditions for the existence of a family of periodic solutions close to a given solution for multidimensional autonomous and non-autonomous differential systems.
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, 2011 A semilinear reaction–diffusion two-point boundary value problem, whose second-order derivative is multiplied by a small positive parameter ε 2 , is considered. It can have multiple solutions.
NATALIA KOPTEVA (12353197) +5 more
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