Results 61 to 70 of about 1,097 (184)

Ulam‐type stability of ψ− Hilfer fractional‐order integro‐differential equations with multiple variable delays

Asian Journal of Control, Volume 28, Issue 1, Page 34-45, January 2026.
Abstract We study a nonlinear ψ−$$ \psi - $$ Hilfer fractional‐order delay integro‐differential equation ( ψ−$$ \psi - $$ Hilfer FrODIDE) that incorporates N−$$ N- $$ multiple variable time delays. Utilizing the ψ−$$ \psi - $$ Hilfer fractional derivative ( ψ−$$ \psi - $$ Hilfer‐FrD), we investigate the Ulam–Hyers––Rassias (U–H–R), semi‐Ulam–Hyers ...
Cemil Tunç, Osman Tunç
wiley   +1 more source

Controllability of Impulsive Non–Linear Delay Dynamic Systems on Time Scale

IEEE Access, 2020
In this paper, we obtain the results of controllability for first order impulsive non–linear time varying delay dynamic systems and Hammerstein impulsive system on time scale, using the theory of fixed points such as Banach fixed point theorem ...
Akbar Zada, Luqman Alam, Poom Kumam, Wiyada Kumam, Gohar Ali, Jehad Alzabut   +5 more
doaj   +1 more source

Essential dietary fatty acids affect intraspecific competition in herbivorous zooplankton

Limnology and Oceanography, Volume 71, Issue 1, January 2026.
Abstract The trophic transfer efficiency at the pelagic phytoplankton‐zooplankton interface is—among other factors—governed by the dietary availability of polyunsaturated fatty acids (PUFAs) to herbivorous zooplankton. As most zooplankton taxa cannot synthesize PUFAs de novo, the phytoplankton PUFA composition is crucial for the herbivores' fitness. As
Maja Ilić, Sina Brehm, Maria Stockenreiter, Eric von Elert, Patrick Fink   +4 more
wiley   +1 more source

Adaptive Multilevel Feature Fusion and Dynamic Model Updating for Robust Visual Object Tracking

Applied Computational Intelligence and Soft Computing, Volume 2026, Issue 1, 2026.
Object tracking remains a challenging task due to significant variations in the appearance of target objects caused by factors such as deformation, occlusion, and rapid movement. These variations often result in model drift and tracking failure, particularly in complex and dynamic environments.
Xianyou Zeng, Long Xu, Hengyou Wang, Lei Liu, Chengzhen Xu, Yonghong Xu, Xingyu Chen, Francesco Taglino   +7 more
wiley   +1 more source

A Correlation Analysis-Based Hierarchical Identification Strategy for Hammerstein Models

Algorithms
Reliable mathematical models are essential for high-performance analysis and optimization of complex power and energy systems. However, inherent nonlinearities pose significant challenges to accurate model identification. The Hammerstein model, a typical
Qi Dong, Haolong Jiang, Qinyao Liu, Yuan Gao   +3 more
doaj   +1 more source

Locally Bounded Second κ‐Variation Solution of an Integro‐Differential Equation With Infinite Delay

International Journal of Differential Equations, Volume 2026, Issue 1, 2026.
This work presents conditions under which the Volterra integral equation of the second kind admits a unique solution in the class of locally bounded second κ‐variation functions on [0, +∞). Our approach relies on successive Picard iterations to obtain such a solution on a compact interval, and then to prolong it to [0, +∞).
Luz Elimar Marchan, Luis Fernando Mejías, Liliana Pérez, Deepali   +3 more
wiley   +1 more source

Simulation and Generalized Dynamic Modeling of Metro Pantograph-Catenary System Based on Least Squares Support Vector Machine

机车电传动, 2017
A Generalized dynamic modeling method was proposed for pantograph-catenary system based on least squares support machine (LSSVM), and the pantograph-catenary model identification and simulation were carried out.
Huang Yuping, JIANG Wei, TONG Jingquan, SHI Luxing   +3 more
doaj  

Improved Intelligent Identification of Hammerstein-Wiener Systems by Particle Swarm Optimization and K-Means Clustering

Chemical Engineering Transactions, 2019
This paper considers the robust identification of Hammerstein-Wiener systems in the presence of Gaussian or non-Gaussian noises. An improved intelligent identification scheme is exploited by combining particle swarm optimization (PSO) and K-means ...
Zhu Wang, Haoran An, Xiong-Lin Luo
doaj   +1 more source

Robust integral sliding mode control for pressure management in multi-phase flow systems

Results in Engineering
This study proposes a novel discrete-time integral sliding mode control (ISMC) framework for managing pressure in multi-phase flow systems (MPFS), a critical component of hydrocarbon production and transportation.
Nezar M. Alyazidi, Aiman F. Bawazir, Ala S. Al-Dogail   +2 more
doaj   +1 more source

Hammerstein Model Identification for Autonomous Vehicle Dynamics by Two-Stage Algorithm

Engineering Proceedings
In this paper, the nonlinear identification (ID) of the lateral dynamics of a road vehicle is presented. The mathematical description of lateral dynamics is crucial for developing various self-driving functions.
György Istenes, Dániel Pup, György Terdik, József Bokor   +3 more
doaj   +1 more source