Nonlinear Autoregressive Model for Stability and Prediction by Salim M. Ahmad, Anas S. Youns, Manal S. Hamdi

“…A proposed nonlinear autoregressive model was employed to predict daily new COVID-19 infections in Iraq. …”
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Coincidence theorems for nonlinear hybrid contractions by Y. J. Cho, B. Fisher, G. S. Genga

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Subspace-Based Identification of Nonlinear Structures by S. Marchesiello, L. Garibaldi

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Analysis of Nonlinear Dynamics of Neural Networks by Sabri Arik, Juhyun Park, Tingwen Huang, José J. Oliveira

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Nonlinearity Measurements Using Alternating Current by Carlo Corsi, Arnaldo d'Amico, Vladimír Ryšánek

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The nonlinear analysis of the reproductive system model by Donatas Švitra, Rasa Grigolienė

“…It is presented the nonlinear analysis of the model in this work. At help the PC and using Euler's counting method, we find the solutions of system and compare the received results with the experimental data. …”
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Parameters Approach Applied on Nonlinear Oscillators by Najeeb Alam Khan, Fatima Riaz, Nadeem Alam Khan

“…We applied an approach to obtain the natural frequency of the generalized Duffing oscillator u¨ + u + α3u3 + α5u5 + α7u7 + ⋯ + αnun=0 and a nonlinear oscillator with a restoring force which is the function of a noninteger power exponent of deflection u¨+αu|u|n−1=0. …”
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Mutation and Chaos in Nonlinear Models of Heredity by Nasir Ganikhodjaev, Mansoor Saburov, Ashraf Mohamed Nawi

“…We shall explore a nonlinear discrete dynamical system that naturally occurs in population systems to describe a transmission of a trait from parents to their offspring. …”
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On the Nonlinear Theory of Micropolar Bodies with Voids by Marin Marin

“…This paper is concerned with the nonlinear theory of micropolar, porous, and elastic solids. …”
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Bounded solutions of nonlinear Cauchy problems by Josef Kreulich

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Periodic solutions of nonlinear differential equations by Xiaojing Yang

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Nonlinear transform coding for semantic communications by Ping ZHANG, Jincheng DAI, Yuming ZHANG, Sixian WANG, Xiaoqi QIN, Kai NIU

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Nonlinear differential equations and algebraic systems by Lloyd K. Williams

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Longitudinal elastic nonlinearity of composite�material by B.N. Fedulov, D.A. Bondarchuk, E.V. Lomakin

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Different Physical Structures of Solutions for a Generalized Resonant Dispersive Nonlinear Schrödinger Equation with Power Law Nonlinearity by K. S. Al-Ghafri

“…In this work, we investigate various types of solutions for the generalised resonant dispersive nonlinear Schrödinger equation (GRD-NLSE) with power law nonlinearity. …”
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Bifurcations and Exact Solutions of the Coupled Nonlinear Generalized Zakharov Equations with Anti-Cubic Nonlinearity: Dynamical System Approach by Jie Song, Feng Li, Mingji Zhang

“…We consider the exact traveling wave solutions for the coupled nonlinear generalized Zakharov equations. By employing the method of dynamical systems, we are able to obtain bifurcations of the phase portraits of the corresponding planar dynamical system under various parameter conditions. …”
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Principal Component Analysis in the Nonlinear Dynamics of Beams: Purification of the Signal from Noise Induced by the Nonlinearity of Beam Vibrations by A. V. Krysko, Jan Awrejcewicz, Irina V. Papkova, Olga Szymanowska, V. A. Krysko

“…Solutions to linear and nonlinear differential equations are found using the principal component analysis (PCA).…”
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Dynamic analysis and comparison of the performance of linear and nonlinear controllers applied to a nonlinear non-interactive and interactive process by José M. Campos-Salazar, Pablo Lecaros, Rodrigo Sandoval-García

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A Retrospection of Chaotic Phenomena in Electrical Systems by Umesh Kumar

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Null Controllability of a Nonlinear Dissipative System and Application to the Detection of the Incomplete Parameter for a Nonlinear Population Dynamics Model by Yacouba Simporé, Oumar Traoré

“…We first prove a null controllability result for a nonlinear system derived from a nonlinear population dynamics model. …”
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