Swarming Computational Procedures for the Coronavirus-Based Mathematical SEIR-NDC Model by Suthep Suantai, Zulqurnain Sabir, Muhammad Asif Zahoor Raja, Watcharaporn Cholamjiak

“…A merit function is constructed by using the nonlinear dynamics of the SEIR-NDC mathematical system based on its 7 classes, and the optimization of the merit function is performed through the PSOSQP. …”
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Improved sliding mode temperature control of hydrogen fuel cells for multirotor drones by Qi Wu, Yong Zhang, Tingting Ru, Chenxiao Cai

“…The study focuses on constructing a control-oriented nonlinear thermal model, which serves as a foundation for the subsequent development of a practical temperature regulation approach. …”
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EFFECT OF STATIC PRESSURE ON SURFACE INTEGRITY OF BERYLLIUM COPPER ALLOY TREATED BY ULTRASONIC ROLLING by LI GuangHui, LIN YouXi, CAI JianGuo

“…The results indicate that the static pressure and the surface roughness show a nonlinear relationship in the range of test parameters. …”
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Free Vibrations with Large Amplitude of Axially Loaded Beams on an Elastic Foundation Using the Adomian Modified Decomposition Method by Desmond Adair, Askar Ibrayev, Alima Tazabekova, Jong R. Kim

“…Important to the use of the Adomian modified decomposition method is the treatment of the nonlinear Fredholm integral coefficient, which forms part of the governing equation. …”
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Exact Solution for Long-Term Size Exclusion Suspension-Colloidal Transport in Porous Media by Z. You, P. Bedrikovetsky, L. Kuzmina

“…Results show that transient pore size distribution and nonlinear relation between the filtration coefficient and captured particle concentration during suspension filtration and retention are the main features of long-term deep bed filtration, which generalises the classical deep bed filtration model and its latter modifications. …”
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Influence of Stochastic Meshing Parameter on Vibration of Shearer Cutting Unit Planetary by Wu Guijun, Zhang Yu, Chen Hongyue, Mao Jun

“…In order to research the influence of stochastic meshing parameters on vibration of shearer cutting unit gear transmission system,taking the MG500/1180-WD shearer as the research object,considering about the effects of the factors such as meshing stiffness,meshing damping,combined error and gear backlash,the pure torsion nonlinear dynamics model of gear transmission system for shearer cutting unit is established,takes the meshing stiffness,meshing damping,combined error and gear backlash as the random variable,and also using the variable step size Runge-Kutta methods,the system model is solved,the statistical characteristic for the transient response of the system is obtained through statistic analysis. …”
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A New Accurate Numerical Method Based on Shifted Chebyshev Series for Nuclear Reactor Dynamical Systems by Yasser Mohamed Hamada

“…A new method based on shifted Chebyshev series of the first kind is introduced to solve stiff linear/nonlinear systems of the point kinetics equations. …”
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A NEW PREDICTION METHOD FOR RUL PREDICTION OF CRUSHER ROLL IN NON STATIONARY PARTIALLY OBSERVED STATE by WU JianJun, LIU HaiPing, YE Xiang

“…Then, the relationship between the residual life and the characteristic value is established, and the nonlinear dynamic change of the roll sleeve is described. …”
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Dynamic Analysis of Planar Linkage Mechanism Considering the Clearance of Kinematic Pair by Guoguang Jin, Xurui Hou, Zhan Wei, Zhimin Wang, Yanyan Song

“…In order to accurately analyze the influence of the kinematic pair clearance on the mechanism dynamic characteristics， a nonlinear stiffness coefficient is introduced based on the Gonthier contact force model， and an improved Gonthier model is obtained， which can more accurately describe the elastic force in the kinematic pair. …”
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Stability Analysis of the New Traffic Flow Lattice Model considering Taillight Effect and Speed Deviation by Zhicheng Li, Changxi Ma

“…Through the stability analysis of the model, the stability conditions of the model are obtained. By nonlinear analysis, the mKdV equation is derived which can describe the evolution mechanism of the density wave. …”
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Forecasting Methods in Various Applications Using Algorithm of Estimation Regression Models and Converting Data Sets into Markov Model by Mohammed M. El Genidy, Mokhtar S. Beheary

“…This study aims to model and create a program for linear and nonlinear regression of the water elements in Lake Manzala to assess and predict the water quality. …”
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Radio resource and trajectory optimization for UAV assisted communication based on user route by Lei LANG, Jingning WANG, Yi WANG, Zitao ZHAO

“…Recently, research on the application of unmanned aerial vehicle (UAV) in wireless communication networks has been widely studied.Aiming at the downlink wireless transmission system of UAV assisted mobile user communication, a method of resource allocation and trajectory optimization based on user route was proposed.According to the known user route, the estimated large-scale channel state information was obtained in advance, and a joint optimization problem of communication bandwidth allocation and trajectory optimization was established to maximize the minimum average rate of users.The problem was a nonconvex optimization problem, and there was nonlinear coupling between the variables.By introducing the method of alternating optimization of auxiliary variables and separated variables, the original problem was decomposed into two approximate convex optimization subproblems which could be solved, and the successive convex approximation was used to iteratively optimize the two subproblems, and an approximate suboptimal solution of the original nonconvex problem was obtained.Simulation results show that the proposed method of resource allocation and trajectory optimization can effectively improve the average data throughput of users, and improve the efficiency of UAV assisted communication on the premise of ensuring the communication quality of all users.…”
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Application of Variational Mode Decomposition and Multiscale Permutation Entropy in Rolling Bearing Failure Analysis by Haorui Liu, Haijun Li, Rongyan Wang, Hengwei Zhu, Jianchen Zhang

“…The rolling bearing fault test signal has nonstationary and nonlinear characteristics. The feature extraction method based on variational mode decomposition (VMD) and permutation entropy can effectively measure the regularity of the signal and detect weak changes. …”
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A Novel Approach to Measure the Hydraulic Capacitance of a Microfluidic Membrane Pump by Chun-Hui Wu, Chia-Wei Chen, Long-Sheng Kuo, Ping-Hei Chen

“…The measured hydraulic capacitance data and the proposed equations in the linear and nonlinear regions qualitatively exhibited good agreement.…”
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Quantized Dissipative Observer-Based Output Feedback Control for a Class of Markovian Descriptor Jump Systems with Communication Delay by Muhammad Shamrooz Aslam, Xisheng Dai

“…The descriptor systems are presented as Markovian jump systems which give a more realistic presentation for a variety of nonlinear dynamical systems than conventional state-space representation. …”
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Wavelets-Computational Aspects of Sterian Realistic Approach to Uncertainty Principle in High Energy Physics: A Transient Approach by Cristian Toma

“…It is shown that the best results can be obtained using wavelets aspects and support macroscopic functions for computing (i) wave-train nonlinear relativistic transformation, (ii) reflection/refraction with a constant shift, (iii) diffraction considered as interaction with a null phase shift without annihilation of associated wave, (iv) deflection by external electromagnetic fields without phase loss, and (v) annihilation of associated wave-train through fast and spatially extended phenomena according to uncertainty principle.…”
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Monte Carlo Simulation of Linear Polymer Thermal Depolymerization under Isothermal and Dynamic Modes by Elena V. Bystritskaya, Oleg N. Karpukhin, Alla V. Kutsenova

“…Treatment of the model kinetic curves of degradation using the nonlinear regression method by the Avrami equation, under both isothermal and dynamic modes, gives correct activation energy and pre-exponential factor values independently of the initial PDI. …”
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Optimization of Photonic Nanocrystals for Invisibility Using Artificial Intelligence by Z. Dorrani

“…ResNet can assist designers in selecting suitable materials and determining the optimal dimensions and arrangements of photonic nanostructured crystals for invisibility by extracting complex and nonlinear features from input data. The phenomenon of negative refraction in photonic crystals and the way light propagates in the proposed invisibility were studied using FDTD simulation. …”
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Optimizing Cooperative Cognitive Radio Networks with Opportunistic Access by Ammar Zafar, Mohamed-Slim Alouini, Yunfei Chen, Redha M. Radaydeh

“…It is then shown that the objective functions and the constraints are nonlinear and nonconvex functions of the parameters of interest, that is, source and relay powers, symbol time, and sensing time. …”
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Rheology of the vertex model of tissues: Simple shear and oscillatory geometries by Doron Grossman, Jean-Francois Joanny

“…We give an analytical expression for the tissue response in an oscillating strain experiment in the linear regime and calculate it numerically in the nonlinear regime. When the tissue is supported by an oscillating substrate, it reorients depending on frequency and the Poisson ratio of the substrate. …”
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