Anti-Unwinding Attitude Control with Fixed-Time Convergence for a Flexible Spacecraft by Chutiphon Pukdeboon, Anuchit Jitpattanakul

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Spectral study of COVID-19 pandemic in Japan: The dependence of spectral gradient on the population size of the community. by Ayako Sumi, Masayuki Koyama, Manato Katagiri, Norio Ohtomo

“…The results confirm that the power spectral densities (PSDs) of the data from each prefecture show exponential characteristics, which are universally observed in the PSDs of time series generated by nonlinear dynamical systems, such as the susceptible/exposed/infectious/recovered (SEIR) epidemic model. …”
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Output Feedback Control for Asymptotic Stabilization of Spacecraft with Input Saturation by Chutiphon Pukdeboon

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Existence Results for a Nonlocal Coupled System of Sequential Fractional Differential Equations Involving ψ-Hilfer Fractional Derivatives by Athasit Wongcharoen, Sotiris K. Ntouyas, Phollakrit Wongsantisuk, Jessada Tariboon

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Fractional-Order Epidemic Model for Measles Infection by Philip N. A. Akuka, Baba Seidu, Eric Okyere, Stephen Abagna

“…In this study, a nonlinear dynamic SEVIQR measles epidemic model is constructed and analyzed using the novel Caputo fractional-order derivative operator. …”
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Existence and Stability for a Nonlinear Coupled p-Laplacian System of Fractional Differential Equations by Merfat Basha, Binxiang Dai, Wadhah Al-Sadi

“…Since topological degree theory is more applicable in nonlinear dynamical problems, the existence and uniqueness of the suggested coupled system are treated using this technique, and we find appropriate conditions for positive solutions to the proposed problem. …”
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Sensitivity Analysis of the Coupled Dynamic Behavior of Vehicles in Collision with Semirigid Guardrails by Chun Liu, Hong-Jun Liao, Jun Chen, Qian-Qian Deng

“…This model comprehensively integrates the nonlinear dynamic behavior of both the vehicle body and the guardrail structure. …”
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Acoustic frequency comb generation on a composite diamond/silicon microcantilever in ambient air by Zhixin Zhao, Yanyan Li, Wangyang Zhang, Wenyao Luo, Duo Liu

“…We develop a parametric driving scheme that enables generation of AFCs through injection locking and sequential nonlinear dynamic transitions involving subharmonic synchronization (Arnold tongue), and chaotic dynamics. …”
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Distributed Power Trading System Based on Blockchain Technology by Shuguo Chen, Weibin Ding, Zhongzheng Xiang, Yuanyuan Liu

“…The power trading system has the characteristics of nonlinearity, dynamics, and complexity. Part of the business data in the trading system needs to be exposed to numerous external business systems. …”
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On the Inertia Term of Projectile's Penetration Resistance by Yu Shan, Haijun Wu, Fenglei Huang, Jinzhu Li

“…The effect of the target inertia term of rigid kinetic energy projectiles (KEP’s) penetration resistance is investigated using nonlinear dynamic code LS-DYNA and four constitutive models. …”
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Identification of Industrial Furnace Temperature for Sintering Process in Nuclear Fuel Fabrication Using NARX Neural Networks by Dede Sutarya, Benyamin Kusumoputro

“…The main contribution of this paper is to identify the appropriate model and structure to be applied in control temperature in the sintering process in nuclear fuel fabrication, that is, a nonlinear dynamical system. Satisfactory agreement between identified and experimental data is found with normalized sum square error 1.9e-03 for heating step and 6.3859e-08 for soaking step. …”
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High-Order Breather Solutions, Lump Solutions, and Hybrid Solutions of a Reduced Generalized (3 + 1)-Dimensional Shallow Water Wave Equation by Jing Wang, Biao Li

“…We investigate a reduced generalized (3 + 1)-dimensional shallow water wave equation, which can be used to describe the nonlinear dynamic behavior in physics. By employing Bell’s polynomials, the bilinear form of the equation is derived in a very natural way. …”
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Forecast of Chaotic Series in a Horizon Superior to the Inverse of the Maximum Lyapunov Exponent by Miguel Alfaro, Guillermo Fuertes, Manuel Vargas, Juan Sepúlveda, Matias Veloso-Poblete

“…The theory of the nonlinear dynamic systems indicates the capacity of making good-quality predictions of series coming from dynamic systems with chaotic behavior up to a temporal horizon determined by the inverse of the major Lyapunov exponent. …”
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Assessment of Design and Retrofitting Solutions on the Progressive Collapse of Hongqi Bridge by Amir Seyed Khoei, Reza Akbari, Shahrokh Maalek, Alireza Gharighoran

“…In this study, progressive collapse of Hongqi Bridge was investigated using nonlinear dynamic analysis in the Applied Element Method, which has been proven as one of the best methods that can follow the collapse behavior of structures. …”
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Design of Robust Adaptive Observer against Measurement Noise for Sensorless Vector Control of Induction Motor Drives by Asma Boulmane, Youssef Zidani, Mohammed Chennani, Driss Belkhayat

“…This technique ensures the stability of the induction motor considered as nonlinear dynamic system. Since the Luenberger observer works on deterministic environment, and it is most effective when sensor noise is limited, the present study aims to design a robust observer insensitive to measurement noise and parametric variation integrated in a cascade structure. …”
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The Shock Characteristics of Tilted Support Spring Packaging System with Critical Components by An-Jun Chen

“…The nonlinear dynamical equations of tilted support spring packaging system with critical components were obtained under the action of half-sine pulse. …”
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Normal Form for High-Dimensional Nonlinear System and Its Application to a Viscoelastic Moving Belt by S. P. Chen, Y. H. Qian

“…The improved method is described in detail by analyzing the four-dimensional nonlinear dynamical systems whose Jacobian matrices evaluated at an equilibrium point contain three different cases, that are, (i) two pairs of pure imaginary eigenvalues, (ii) one nonsemisimple double zero and a pair of pure imaginary eigenvalues, and (iii) two nonsemisimple double zero eigenvalues. …”
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Separable Nonlinear Least-Squares Parameter Estimation for Complex Dynamic Systems by Itai Dattner, Harold Ship, Eberhard O. Voit

“…Nonlinear dynamic models are widely used for characterizing processes that govern complex biological pathway systems. …”
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A fault tolerant control for iced aircraft based on fixed-time incremental dynamic inversion with FTESO by JIANG Feihong, LIU Xiaoxiong, LIU Zhenbao, LI Yu, CHEN Jiaxin

“…To address this problem, in this paper a fixed-time incremental nonlinear dynamic inversion(INDI) control method based on a fixed-time dilated state observer(FTESO) is proposed, and a flight controller for a certain type of transport aircraft is designed based on this method, which is used to enhance the flight control capability under icing conditions, and thus improve the flight safety. …”
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Stability Analysis of Regular and Chaotic Ca2+ Oscillations in Astrocytes by Min Ye, Hongkun Zuo

“…Then, we investigate the effectiveness and the accuracy of our nonlinear dynamical mechanism analysis via computer simulations. …”
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