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   Articles with "nonlinear time" as a keyword



Asymptotic Behavior for a Viscoelastic Wave Equation With Acoustic and Fractional Conditions Combined by Nonlinear Time‐Varying Delay in Boundary Feedback in the Presence of Logarithmic Source Term

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recommendations! Published in 2025 at "Mathematical Methods in the Applied Sciences"

DOI: 10.1002/mma.10687

Abstract: This study examines a wave equation within the framework of nonlinear viscoelasticity. Specifically, it considers a nonlinear, time‐varying delay feedback acting on the boundary, coupled with acoustic and fractional boundary conditions, and influenced by a… read more here.

Keywords: acoustic fractional; nonlinear time; wave equation; logarithmic source ... See more keywords

Observer-based fault estimators using iterative learning scheme for nonlinear time-delay systems with intermittent faults

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recommendations! Published in 2017 at "International Journal of Robust and Nonlinear Control"

DOI: 10.1002/rnc.3747

Abstract: Summary This paper deals with the intermittent fault estimation problem for a class of nonlinear time-delay systems with measurement noise. The time delays are assumed to occur in state vector, nonlinear term as well as… read more here.

Keywords: fault; time; iterative learning; nonlinear time ... See more keywords

Decentralized adaptive fault‐tolerant control for interconnected nonlinear time‐delay systems with uniform prescribed performance

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recommendations! Published in 2024 at "International Journal of Robust and Nonlinear Control"

DOI: 10.1002/rnc.7404

Abstract: In this article, the prescribed performance tracking control problem is studied for interconnected nonlinear time‐delay systems with sensor and actuator faults. Based on the dynamic gain technique and the backstepping control method, a delay‐independent adaptive… read more here.

Keywords: nonlinear time; control; prescribed performance; interconnected nonlinear ... See more keywords

Simulation of 2D and 3D inverse source problems of nonlinear time-fractional wave equation by the meshless homogenization function method

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recommendations! Published in 2021 at "Engineering with Computers"

DOI: 10.1007/s00366-021-01489-2

Abstract: In this paper, homogenization functions are first proposed to address two-dimensional (2D) and three-dimensional (3D) inverse source problems of nonlinear time-fractional wave equation (ISPs-NTFWE). Homogenization functions for 2D and 3D problems can be derived based… read more here.

Keywords: problems nonlinear; method; inverse source; source problems ... See more keywords

A linearized second-order scheme for nonlinear time fractional Klein-Gordon type equations

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recommendations! Published in 2017 at "Numerical Algorithms"

DOI: 10.1007/s11075-017-0385-y

Abstract: We consider difference schemes for nonlinear time fractional Klein-Gordon type equations in this paper. A linearized scheme is proposed to solve the problem. As a result, iterative method need not be employed. One of the… read more here.

Keywords: gordon type; time fractional; time; fractional klein ... See more keywords

Decay of an Extensible Viscoelastic Plate Equation with a Nonlinear Time Delay

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recommendations! Published in 2018 at "Bulletin of the Malaysian Mathematical Sciences Society"

DOI: 10.1007/s40840-018-0602-4

Abstract: An extensible viscoelastic plate equation with a nonlinear time-varying delay feedback and nonlinear source term is considered. Under suitable assumptions on relaxation function, nonlinear internal delay feedback, and source term, we establish a general decay… read more here.

Keywords: equation nonlinear; plate equation; viscoelastic plate; delay ... See more keywords

A high-order numerical scheme for solving nonlinear time fractional reaction-diffusion equations with initial singularity

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recommendations! Published in 2021 at "Applied Numerical Mathematics"

DOI: 10.1016/j.apnum.2021.06.013

Abstract: Abstract We propose a high-order numerical scheme for nonlinear time fractional reaction-diffusion equations with initial singularity, where L2- 1 σ scheme on graded mesh is used to approximate Caputo fractional derivative and Legendre spectral method… read more here.

Keywords: order numerical; scheme; nonlinear time; numerical scheme ... See more keywords

Nonlinear Time Series Analysis of Avalanching Granular Flow Data

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recommendations! Published in 2019 at "IFAC-PapersOnLine"

DOI: 10.1016/j.ifacol.2019.09.193

Abstract: Abstract Dry cohesive granular flow can show pronounced nonlinear behaviour, which needs to be identified prior to the design of bulk solids handling systems. Laboratory tests yield time series data representing the flow behaviour of… read more here.

Keywords: granular flow; nonlinear time; time series; time ... See more keywords

On the limits of probabilistic forecasting in nonlinear time series analysis II: Differential entropy.

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recommendations! Published in 2017 at "Chaos"

DOI: 10.1063/1.4986394

Abstract: In a previous paper, the authors studied the limits of probabilistic prediction in nonlinear time series analysis in a perfect model scenario, i.e., in the ideal case that the uncertainty of an otherwise deterministic model… read more here.

Keywords: time series; entropy; limits probabilistic; series analysis ... See more keywords

Dispersion complexity-entropy curves: An effective method to characterize the structures of nonlinear time series.

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recommendations! Published in 2024 at "Chaos"

DOI: 10.1063/5.0197167

Abstract: The complexity-entropy curve (CEC) is a valuable tool for characterizing the structure of time series and finds broad application across various research fields. Despite its widespread usage, the original permutation complexity-entropy curve (PCEC), which is… read more here.

Keywords: time series; complexity entropy; nonlinear time; time ... See more keywords

Analysis of Legendre pseudospectral approximations for nonlinear time fractional diffusion-wave equations

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recommendations! Published in 2021 at "International Journal of Computer Mathematics"

DOI: 10.1080/00207160.2020.1846731

Abstract: A finite difference/pseudospectral scheme is developed for solving nonlinear time fractional parabolic equations with Caputo fractional derivative of order . The boundedness and unique solvability of numerical solution are given. Then we prove rigorously the… read more here.

Keywords: time fractional; nonlinear time; legendre pseudospectral; analysis legendre ... See more keywords