Results 41 to 50 of about 699,942 (291)

Governing equation discovery based on causal graph for nonlinear dynamic systems

open access: yesMachine Learning: Science and Technology, 2023
The governing equations of nonlinear dynamic systems is of great significance for understanding the internal physical characteristics. In order to learn the governing equations of nonlinear systems from noisy observed data, we propose a novel method ...
Dongni Jia   +4 more
doaj   +1 more source

Fuzzy Adaptive Asymptotic Control for a Class of Large-Scale High-Order Unknown Nonlinear Systems

open access: yesApplied Sciences, 2023
This paper studies the asymptotic control problem of a class of large-scale high-order nonlinear systems (LSHONSs), and an asymptotic fuzzy adaptive dynamic surface controller is developed.
Peilun Ju, Yongfeng Ju, Jiacheng Song
doaj   +1 more source

Reduced Muscular Carnosine in Proximal Myotonic Myopathy—A Pilot 1H‐MRS Study

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Myotonic dystrophy type 2 (proximal myotonic myopathy, PROMM) is a progressive multisystem disorder with muscular symptoms (proximal weakness, pain, myotonia) and systemic manifestations such as diabetes mellitus, cataracts, and cardiac arrhythmias.
Alexander Gussew   +11 more
wiley   +1 more source

Test-signals forming method for correlation identification of nonlinear systems [PDF]

open access: yesКомпьютерные исследования и моделирование, 2012
Тhe new test-signals forming method for correlation identification of a nonlinear system based on Lee-Shetzen cross-correlation approach is developed and tested.
Dmitriy Yur'evich Dunyushkin
doaj   +1 more source

Unraveling the Molecular Mechanisms of Glioma Recurrence: A Study Integrating Single‐Cell and Spatial Transcriptomics

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Glioma recurrence severely impacts patient prognosis, with current treatments showing limited efficacy. Traditional methods struggle to analyze recurrence mechanisms due to challenges in assessing tumor heterogeneity, spatial dynamics, and gene networks.
Lei Qiu   +10 more
wiley   +1 more source

Logic-dynamic approach to fault diagnosis in mechatronic systems

open access: yesInternational Journal of Advanced Robotic Systems, 2008
This paper presents a problem of fault detection and isolation (FDI) in mechatronic systems described by nonlinear dynamic models with such types of no differentiable nonlinearities as saturation, Coulomb friction, backlash, and hysteresis. To solve this
A. N. Zhirabok, V. F. Filaretov
doaj  

On Controllability and Stabilization of Nonlinear Continuous-discrete Dynamic Systems

open access: yesИзвестия Иркутского государственного университета: Серия "Математика"
The paper considers the issues of control and stabilization of nonlinear dynamic systems described by a set of differential and difference equations, the latter of which contain a control vector.
S. V. Akmanova
doaj   +1 more source

Schauder’s fixed-point theorem in approximate controllability problems

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2016
The main objective of this article is to present the state of the art concerning approximate controllability of dynamic systems in infinite-dimensional spaces.
Babiarz Artur   +2 more
doaj   +1 more source

Fluid Biomarkers of Disease Burden and Cognitive Dysfunction in Progressive Supranuclear Palsy

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Identifying objective biomarkers for progressive supranuclear palsy (PSP) is crucial to improving diagnosis and establishing clinical trial and treatment endpoints. This study evaluated fluid biomarkers in PSP versus controls and their associations with regional 18F‐PI‐2620 tau‐PET, clinical, and cognitive outcomes.
Roxane Dilcher   +10 more
wiley   +1 more source

Recent Advances in Nonlinear Dynamics Applied in Electromechanical Systems

open access: yesApplied Sciences
Electromechanical equipment is indispensable in the modernization. The motions of electromechanical systems are becoming increasingly complex, which inevitably involves nonlinearity.
Yeyin Xu, Yinghou Jiao, Zhaobo Chen
doaj   +1 more source

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