Results 211 to 220 of about 10,858 (258)
Exploring Bidirectional Associations Between Voice Acoustics and Objective Motor Metrics in Parkinson's Disease. [PDF]
Brain SciGianlorenço AC +11 more
europepmc +1 more source
The relationship between speed and curvature differs in autistic and non-autistic tracing movements. [PDF]
Sci RepCook JL +4 more
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From Memristor-Modeled Jerk System to the Nonlinear Systems with Memristor
Symmetry, 2022 Based on the proposed generalized memristor, a new jerk system is proposed. The complex dynamics of the system are investigated by means of bifurcation diagrams, Lyapunov exponents, and MSampEn, and rich dynamics are observed. Moreover, the circuits of the generalized memristor and the jerk system are physically implemented in the hardware level.
Shaobo He, Weijie Tan, Huihai Wang
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Some Jerk Systems with Hidden Chaotic Dynamics
International Journal of Bifurcation and Chaos, 2023Hidden chaotic attractors is a fascinating subject of study in the field of nonlinear dynamics. Jerk systems with a stable equilibrium may produce hidden chaotic attractors. This paper seeks to enhance our understanding of hidden chaotic dynamics in jerk systems of three variables [Formula: see text] with nonlinear terms from a predefined set ...
Bingxue Li +5 more
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Analysis of Zero–Hopf Bifurcation in a Simple Jerk System
International Journal of Bifurcation and Chaos, 2023This work aims to study the zero–Hopf bifurcation of a jerk system with four real parameters. Some sufficient conditions of the emergence of periodic orbit and its stability at zero–Hopf equilibrium point are obtained by averaging theory.
Biyao Guo, Yan Zhou, Wei Zhang, Yu Liu
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Synchronization of chaotic jerk systems
International Journal of Modern Physics B, 2020Chaotic jerk oscillators belong to the simplest chaotic systems. These systems try to model the behavior of dynamical systems efficiently. Jerk oscillators can be known as the most general systems in science, especially physics. It has been proved that every dynamical system expressed with an ordinary differential equation is able to describe as a ...
Z. Wang +4 more
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Nonlinear Behavior of a Novel Switching Jerk System
International Journal of Bifurcation and Chaos, 2020This paper proposes a novel chaotic jerk system, which is defined on four domains, separated by codimension-2 discontinuity surfaces. The dynamics of the proposed system are conveniently described and analyzed through a generalization of the Poincaré map which is constructed via an explicit solution of each subsystem.
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Jerk derivative feedforward control for motion systems
Proceedings of the 2004 American Control Conference, 2004This work discusses reference trajectory relevant model based feedforward design. For motion systems which contain at least one rigid body mode and which are subject to reference trajectories with mostly low frequency energy, the proposed feedforward controller improves tracking performance significantly. The feedforward controller may be of much lower
Boerlage, M.L.G. +2 more
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Multiple system atrophy with macrosquare‐wave jerks
Movement Disorders, 2004AbstractMacrosquare‐wave jerks consist of high‐amplitude saccadic intrusions occurring mainly during fixation that are observed in several disease entities, e.g., multiple sclerosis or parkinsonian syndromes, but very rarely in patients with multiple system atrophy.
Luisa, Klotz, Thomas, Klockgether
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Bursting dynamics in parametrically driven memristive Jerk system
Chinese Journal of Physics, 2020zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wen, Zihao, Li, Zhijun, Li, Xiang
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