Results 41 to 50 of about 575,970 (287)

Existence and Stability of the Periodic Solution with an Interior Transitional Layer in the Problem with a Weak Linear Advection

open access: yesМоделирование и анализ информационных систем, 2018
In the paper, we study a singularly perturbed periodic in time problem for the parabolic reaction-advection-diffusion equation with a weak linear advection. The case of the reactive term in the form of a cubic nonlinearity is considered.
Nikolay N. Nefedov, Egor Ig. Nikulin
doaj   +1 more source

Applications of OHAM and MOHAM for Fractional Seventh-Order SKI Equations

open access: yesJournal of Applied Mathematics, 2021
In this article, a comparative study between optimal homotopy asymptotic method and multistage optimal homotopy asymptotic method is presented. These methods will be applied to obtain an approximate solution to the seventh-order Sawada-Kotera Ito ...
Jafar Biazar, Saghi Safaei
doaj   +1 more source

The Influence Function of Penalized Regression Estimators [PDF]

open access: yes, 2014
To perform regression analysis in high dimensions, lasso or ridge estimation are a common choice. However, it has been shown that these methods are not robust to outliers.
Alfons, Andreas   +2 more
core   +2 more sources

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

open access: yesInternational Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam   +2 more
wiley   +1 more source

Asymptotic stability of linear multistep methods and Runge-Kutta methods for homogeneous differential-algebraic equations with rectangular coefficients

open access: yes上海师范大学学报. 自然科学版, 2021
This paper is concerned with the asymptotic stability of numerical methods applied to linear differential-algebraic equations. The coefficient matrices of the system are constant rectangular matrices.
SUN Leping
doaj   +1 more source

REGRESSION ASYMPTOTICS USING MARTINGALE CONVERGENCE METHODS [PDF]

open access: yesEconometric Theory, 2008
Weak convergence of partial sums and multilinear forms in independent random variables and linear processes and their nonlinear analogues to stochastic integrals now plays a major role in nonstationary time series and has been central to the development of unit root econometrics.
IBRAGIMOV, Rustam, PHILLIPS, Peter C. B.
openaire   +5 more sources

Asymptotic approximations to the nodes and weights of Gauss-Hermite and Gauss-Laguerre quadratures [PDF]

open access: yes, 2017
Asymptotic approximations to the zeros of Hermite and Laguerre polynomials are given, together with methods for obtaining the coefficients in the expansions.
Gil, A., Segura, J., Temme, N. M.
core   +1 more source

An asymptotic relationship between coupling methods for stochastically modeled population processes [PDF]

open access: yes, 2014
This paper is concerned with elucidating a relationship between two common coupling methods for the continuous time Markov chain models utilized in the cell biology literature. The couplings considered here are primarily used in a computational framework
Anderson, David F., Koyama, Masanori
core   +1 more source

A Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
Block Diagram of the Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller. ABSTRACT This article introduces a discrete‐time robust adaptive one‐sample‐ahead preview super‐twisting sliding mode controller. A stability analysis of the controller by Lyapunov criteria is developed to demonstrate its robustness in handling both ...
Guilherme Vieira Hollweg   +5 more
wiley   +1 more source

Study of the influence of small defects near a singular point in antiplane elasticity by an asymptotic method

open access: yesVietnam Journal of Mechanics, 2018
We consider a domain made of a linear elastic material which contains an angular point. A small defect, like a cavity or a crack, is located in the neighborhood of the tip of the wedge.
Dang Thi Bach Tuyet   +2 more
doaj   +1 more source

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