Results 31 to 40 of about 2,861 (240)
Type-K Exponential Ordering with Application to Delayed Hopfield-Type Neural Networks
Journal of Applied Mathematics, 2012 Order-preserving and convergent results of delay functional differential equations without quasimonotone condition are established under type-K exponential ordering.
Bin-Guo Wang
doaj +1 more source
International Journal of Adaptive Control and Signal Processing, EarlyView.This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley +1 more source
Pullback and uniform exponential attractors for non-autonomous Oregonator systems
Open MathematicsWe consider the long-time global dynamics of non-autonomous Oregonator systems. This system is a coupled system of three reaction-diffusion equations, that arises from the Belousov-Zhabotinskii reaction.
Liu Na, Yu Yang-Yang
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A Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller
International 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
Classical and quantum chaos in chirally-driven, dissipative Bose-Hubbard systems
npj Quantum Information, 2022 We study the dissipative Bose-Hubbard model on a small ring of sites in the presence of a chiral drive and explore its long-time dynamical structure using the mean-field equations and by simulating the quantum master equation.
Daniel Dahan, Geva Arwas, Eytan Grosfeld
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Advanced Engineering Materials, Volume 27, Issue 6, March 2025.The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez +5 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.This study explores the lightweight potential of laser additive‐manufactured NiTi triply periodic minimal surface sheet lattices. It systematically investigates the effects of relative density and unit cell size on surface quality, deformation recovery, compression behavior, and energy absorption.
Haoming Mo +3 more
wiley +1 more source
A Workflow to Accelerate Microstructure‐Sensitive Fatigue Life Predictions
Advanced Engineering Materials, EarlyView.This study introduces a workflow to accelerate predictions of microstructure‐sensitive fatigue life. Results from frameworks with varying levels of simplification are benchmarked against published reference results. The analysis reveals a trade‐off between accuracy and model complexity, offering researchers a practical guide for selecting the optimal ...
Luca Loiodice +2 more
wiley +1 more source
Dynamical analysis for a scalar–tensor model with Gauss–Bonnet and non-minimal couplings
European Physical Journal C: Particles and Fields, 2017 We study the autonomous system for a scalar–tensor model of dark energy with Gauss–Bonnet and non-minimal couplings. The critical points describe important stable asymptotic scenarios including quintessence, phantom and de Sitter attractor solutions. Two
L. N. Granda, D. F. Jimenez
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Exponential attractors for nonautonomous partially dissipative equations
Differential and Integral Equations, 1999 The following problem in a Hilbert space \(H\) is considered: \(u'(t)={\mathcal G} (\alpha ,t,u(t)),\) \(t>\tau ,\) \(u(\tau)=u_\tau \in H,\) where \(\tau \in \mathbb{R}\), \(\alpha =(\alpha _1,\dots ,\alpha _k)\) with \(\alpha _i\) rationally independent and \({\mathcal G}(\omega _1,\dots ,\omega _k,\cdot)\) is \(2\pi \)-periodic in each \(\omega _i.\)
Galusinski, C., Hnid, M., Miranville, A.
openaire +3 more sources