Nonlinear Waveform Sensing for Cognitive Radar Based on Reinforcement Learning by Peikun Zhu, Xu Si, Jiachen Han, Jing Liang

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Oscillation Theorems for Second-Order Damped Nonlinear Differential Equations by Hui-Zeng Qin, Yongsheng Ren

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On Types of Solutions of the Second Order Nonlinear Boundary Value Problems by Maria Dobkevich, Felix Sadyrbaev, Nadezhda Sveikate, Inara Yermachenko

“…We review the results concerning types of solutions of boundary value problems for the second order nonlinear equation (l2x)(t)=f(t,x,x′), where (l2x)(t) is the second order linear differential form. …”
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Iterative Algorithm for Solving a System of Nonlinear Matrix Equations by Asmaa M. Al-Dubiban

“…We discuss the positive definite solutions for the system of nonlinear matrix equations and , where , are two positive integers. …”
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Existence of Positive Solution for BVP of Nonlinear Fractional Differential Equation by Jun-Rui Yue, Jian-Ping Sun, Shuqin Zhang

“…We consider the following boundary value problem of nonlinear fractional differential equation: (CD0+αu)(t)=f(t,u(t)),  t∈[0,1],  u(0)=0,   u′(0)+u′′(0)=0,  u′(1)+u′′(1)=0, where α∈(2,3] is a real number,  CD0+α denotes the standard Caputo fractional derivative, and f:[0,1]×[0,+∞)→[0,+∞) is continuous. …”
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Bifurcation of a Microelectromechanical Nonlinear Coupling System with Delay Feedback by Yanqiu Li, Wei Duan, Shujian Ma, Pengfei Li

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The Cardinal Spline Methods for the Numerical Solution of Nonlinear Integral Equations by Xiaoyan Liu, Jin Xie, Zhi Liu, Jiahuan Huang

“…In this study, an effective technique is presented for solving nonlinear Volterra integral equations. The method is based on application of cardinal spline functions on small compact supports. …”
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Existence of Optimal Control for a Nonlinear-Viscous Fluid Model by Evgenii S. Baranovskii, Mikhail A. Artemov

“…We consider the optimal control problem for a mathematical model describing steady flows of a nonlinear-viscous incompressible fluid in a bounded three-dimensional (or a two-dimensional) domain with impermeable solid walls. …”
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Oscillation and Nonoscillation Criteria for Nonlinear Dynamic Systems on Time Scales by Shanliang Zhu, Chunyun Sheng

“…We consider the nonlinear dynamic system 𝑥Δ(𝑡)=𝑎(𝑡)𝑔(𝑦(𝑡)),𝑦Δ(𝑡)=−𝑓(𝑡,𝑥𝜎(𝑡)). …”
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Strong oscillations for second order nonlinear functional differential equations by Jurang Yan

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On the correct formulation of a nonlinear differential equations in Banach space by Mahmoud M. El-Borai, Osama L. Moustafa, Fayez H. Michael

“…We study, the existence and uniqueness of the initial value problems in a Banach space E for the abstract nonlinear differential equation (dn−1/dtn−1)(du/dt+Au)=B(t)u+f(t,W(t)), and consider the correct solution of this problem. …”
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Parametrically excited nonlinear systems: a comparison of two methods by A. F. El-Bassiouny

“…Subharmonic resonance of two-degree-of-freedom systems with cubic nonlinearities to multifrequency parametric excitations in the presence of three-to-one internal resonance is investigated. …”
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Dynamical System and Nonlinear Regression for Estimate Host-Parasitoid Relationship by Ileana Miranda Cabrera, Heyker Lellanis Baños Díaz, María de los Ángeles Martínez

“…A simple algorithm is used to estimate the parasitoids level using the priori relationship between the host and the climate factors and then the nonlinear model.…”
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Reachable Set Bounding for Homogeneous Nonlinear Systems with Delay and Disturbance by Xingao Zhu, Yuangong Sun

“…Reachable set bounding for homogeneous nonlinear systems with delay and disturbance is studied. …”
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Decay of the 3D Quasilinear Hyperbolic Equations with Nonlinear Damping by Hongjun Qiu, Yinghui Zhang

“…We investigate the 3D quasilinear hyperbolic equations with nonlinear damping which describes the propagation of heat wave for rigid solids at very low temperature, below about 20 K. …”
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NEUVAC: Nonlinear Extreme Ultraviolet Irradiance Model for Aeronomic Calculations by Daniel A. Brandt, Aaron J. Ridley

“…The model employs a nonlinear parameterization of rebinned daily FISM2 irradiances and is termed NEUVAC: Nonlinear Extreme Ultraviolet Irradiance Model for Aeronomic Calculations. …”
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Estimates for the Green function and singular solutions for polyharmonic nonlinear equation by Imed Bachar, Habib Màagli, Syrine Masmoudi, Malek Zribi

“…We exploit properties of functions belonging to Km,n to prove an infinite existence result of singular positive solutions for nonlinear elliptic equation of order 2m.…”
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Oscillation and Asymptotic Behavior of Higher-Order Nonlinear Differential Equations by J. Džurina, B. Baculíková

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Asymptotical Stability of Nonlinear Fractional Differential System with Caputo Derivative by Fengrong Zhang, Changpin Li, YangQuan Chen

“…This paper deals with the stability of nonlinear fractional differential systems equipped with the Caputo derivative. …”
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Fixed Point Theorems for an Elastic Nonlinear Mapping in Banach Spaces by Hiroko Manaka

“…We define a V-strongly nonexpansive mapping by V(·,·). This nonlinear mapping is nonexpansive in a Hilbert space. …”
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