Results 1 to 10 of about 3,334 (209)
Growing and Pruning Selective Ensemble Regression for Nonlinear and Nonstationary Systems [PDF]
IEEE Access, 2020 For a selective ensemble regression (SER) scheme to be effective in online modeling of fast-arriving nonlinear and nonstationary data, it must not only be capable of maintaining a most up to date and diverse base model set but also be able to forget old ...
Tong Liu +3 more
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Synthesis of adaptive observer for nonlinear nonstationary systems
Научно-технический вестник информационных технологий, механики и оптикиA new method for the synthesis of adaptive state observation for a class of nonlinear non-stationary systems is proposed. This task is important and fundamental in control theory and is related to both the control problem and the task of monitoring the ...
K. T. Nguyen +6 more
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Nonlinear dynamics of the backward-wave oscillator as the origin of nonstationary microwave electronics [PDF]
Известия высших учебных заведений: Прикладная нелинейная динамика, 2021 Aim. This article presents a review of the non-stationary nonlinear phenomena in backward-wave oscillators (BWO). Methods. Numerical modeling using the nonstationary (time-domain) 1-D, 2-D, and 2-D nonlinear theory of electron beam interaction with a ...
Ryskin, Nikita Mikhailovich +3 more
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Computation, 2023 Many mechanical systems manifest nonlinear behavior under nonstationary random excitations. Neglecting this nonlinearity in the modeling of a dynamic system would result in unacceptable results.
Amir Younespour +2 more
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Synthesis of Nonlinear Nonstationary Stochastic Systems by Wavelet Canonical Expansions
Mathematics, 2023 The article is devoted to Bayes optimization problems of nonlinear observable stochastic systems (NLOStSs) based on wavelet canonical expansions (WLCEs).
Igor Sinitsyn +3 more
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Applied Sciences, 2022 Time series prediction is crucial for advanced control and management of complex systems, while the actual data are usually highly nonlinear and nonstationary. A novel broad echo state network is proposed herein for the prediction problem of complex time
Wen-Jie Liu +4 more
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Frontiers in Physiology, 2022 Exploring the presence of nonlinearity through surrogate data testing provides insights into the nature of physical and biological systems like those obtained from heart rate variability (HRV). Short-term HRV time series are of great clinical interest to
Martín Calderón-Juárez +6 more
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On a nonstationary nonlinear coupled system [PDF]
Computational & Applied Mathematics, 2011 In this paper, a strongly nonlinear coupled elliptic-parabolic system modelling a class of engineering problems with heat effect is studied. Existence of a weak solution is first established by Schauder fixed point theorem, where the coupled functions σ(s), k(s) are assumed to be bounded.
Li, Gang, Wang, Hui, Zhu, Jiang
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Adaptive Broad Echo State Network for Nonstationary Time Series Forecasting
Mathematics, 2022 Time series forecasting provides a vital basis for the control and management of various systems. The time series data in the real world are usually strongly nonstationary and nonlinear, which increases the difficulty of reliable forecasting.
Wen-Jie Liu +4 more
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Pulse response of nonlinear nonstationary vibrational systems [PDF]
21st Structures, Structural Dynamics, and Materials Conference, 1980 This paper deals with an approximate analysis of the response of nonlinear, nonstationary vi bational systems subject to arbitrary pulse excitations. The nonstationary system parameters are considered to be slowly v arying f unctions of time and may include masses, restoring forces, material properties or damping.
D. OLBERDING, S. SINHA
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