Strategies to enhance THz harmonic generation combining multilayered, gated, and metamaterial-based architectures by Ali Maleki, Moritz B. Heindl, Yongbao Xin, Robert W. Boyd, Georg Herink, Jean-Michel Ménard

“…Its large optical nonlinearity and ease of integration in devices notably makes it an ideal candidate to become a key component for all-optical switching and frequency conversion applications. …”
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Assembly Accuracy Analysis Method Based on Multi‐Stage Linearized Contact by Wenbin Tang, Yadong Li, Tong Yan, Min Zhang

“…ABSTRACT Precision improvement in mechanical manufacturing faces challenges due to nonlinear effects impacting assembly accuracy analysis models. …”
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Optimization of Backpropagation Neural Network under the Adaptive Genetic Algorithm by Junxi Zhang, Shiru Qu

“…This study is to explore the optimization of the adaptive genetic algorithm (AGA) in the backpropagation (BP) neural network (BPNN), so as to expand the application of the BPNN model in nonlinear issues. Traffic flow prediction is undertaken as a research case to analyse the performance of the optimized BPNN. …”
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Quantification of Sunscreen Benzophenone-4 in Hair Shampoos by Hydrophilic Interactions Thin-Layer Chromatography/Densitometry or Derivative UV Spectrophotometry by Anna W. Sobańska, Katarzyna Kałębasiak, Jarosław Pyzowski, Elżbieta Brzezińska

“…The densitometric calibration curve for BZ4 was nonlinear (second-degree polynomial), with R>0.999. …”
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Design of an Improved Hybrid FTC for Faults in Aero-Engine Closed-Loop Control System by Xiaofeng Liu, Chenshuang Luo, Liuqi Xiong

“…The improved hybrid FTC structure combined with the nonlinear thermodynamic component-level (NCL) model-based estimation method merges fault estimation of actuators/sensors and typical components’ degradation estimation process into the FTC process. …”
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Viscoelastic hydrodynamics and holography by Jay Armas, Akash Jain

“…Abstract We formulate the theory of nonlinear viscoelastic hydrodynamics of anisotropic crystals in terms of dynamical Goldstone scalars of spontaneously broken translational symmetries, under the assumption of homogeneous lattices and absence of plastic deformations. …”
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Alternating Generalized Projection Method for Satellite Reflectarray Synthesis with Sequential Stages of Different Illuminations by Rafael Florencio, René Escalante

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Forecasting Daily Precipitation Using Hybrid Model of Wavelet-Artificial Neural Network and Comparison with Adaptive Neurofuzzy Inference System (Case Study: Verayneh Station, Naha... by Abazar Solgi, Vahid Nourani, Amir Pourhaghi

“…Recently artificial neural network (ANN) as a nonlinear interextrapolator is extensively used by hydrologists for precipitation modeling as well as other fields of hydrology. …”
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Lie and Riccati Linearization of a Class of Liénard Type Equations by A. G. Johnpillai, C. M. Khalique, F. M. Mahomed

“…We construct a linearizing Riccati transformation by using an ansatz and a linearizing point transformation utilizing the Lie point symmetry generators for a three-parameter class of Liénard type nonlinear second-order ordinary differential equations. …”
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Self-Organization of Polymeric Fluids in Strong Stress Fields by A. V. Semakov, V. G. Kulichikhin, A. Y. Malkin

“…We presume that the developed concept can play a central role in understanding strong nonlinear effects in the rheology of viscoelastic liquids.…”
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Design of SVC Controller Based on Improved Biogeography-Based Optimization Algorithm by Feifei Dong, Dichen Liu, Jun Wu, Bingcheng Cen, Haolei Wang, Chunli Song, Lina Ke

“…Considering that common subsynchronous resonance controllers cannot adapt to the characteristics of the time-varying and nonlinear behavior of a power system, the cosine migration model, the improved migration operator, and the mutative scale of chaos and Cauchy mutation strategy are introduced into an improved biogeography-based optimization (IBBO) algorithm in order to design an optimal subsynchronous damping controller based on the mechanism of suppressing SSR by static var compensator (SVC). …”
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The Quest for a Stable Disk by J. A. Sellwood, R. G. Carlberg

“…Toomre (1981) claimed that the Mestel disk, embedded in an equal-mass halo, is a notable counterexample, but his prediction of stability could not be reproduced in simulations, due to complicated nonlinear effects that caused secular growth of Poisson noise–driven disturbances until strong features emerged. …”
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Earthquake-Induced Domino-Type Progressive Collapse in Regular, Semiregular, and Irregular Bridges by Amir Seyedkhoei, Reza Akbari, Shahrokh Maalek

“…In the next step, progressive collapse process of the same bridge with posttensioned voided slab under earthquakes was studied using nonlinear time history analysis. Irregularities of the piers were analyzed parametrically. …”
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Fault Diagnosis of Electromechanical Actuator Based on VMD Multifractal Detrended Fluctuation Analysis and PNN by Hongmei Liu, Jiayao Jing, Jian Ma

“…However, EMAs often run under variable conditions in realistic environment, and the vibration signals of EMAs are nonlinear and nonstationary, which make it difficult to effectively achieve fault diagnosis. …”
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Image Super-Resolution Using Lightweight Multiscale Residual Dense Network by Shilin Li, Ming Zhao, Zhengyun Fang, Yafei Zhang, Hongjie Li

“…This method can not only reduce the redundancy of network parameters but also enhance the nonlinear mapping ability of the network at different scales. …”
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Computational Study on Three-Dimensional Convective Casson Nanofluid Flow past a Stretching Sheet with Arrhenius Activation Energy and Exponential Heat Source Effects by P. Ragupathi, S. Saranya, H.V.R. Mittal, Qasem M. Al-Mdallal

“…The developed model of nonlinear partial differential equations (PDEs) has been transformed into ordinary differential equations (ODEs) using similarity transformations. …”
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Research on End-Effector Position Error Compensation of Industrial Robotic Arm Based on ECOA-BP by Wenping Xiang, Junhua Chen, Hao Li, Zhiyuan Chai, Yinghou Lou

“…Industrial robotic arms are often subject to significant end-effector pose deviations from the target position due to the combined effects of nonlinear deformations such as link flexibility, joint compliance, and end-effector load. …”
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Research on Wideband Differential-Mode Current Injection Testing Technique Based on Directional Coupling Device by Xiaodong Pan, Guanghui Wei, Xinfu Lu, Lisi Fan, Xing Zhou

“…The implementation techniques for the single differential-mode current injection method (SDMCI) and the double differential-mode current injection method (DDMCI) are discussed in detail. The typical nonlinear response interconnected systems are selected as the EUT. …”
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Monthly Runoff Prediction Based on STL-CEEMDAN-LSTM Model by WANG Hai, SHEN Yanqing, QI Shansheng, PAN Hongzhong, HUO Jianzhen, WANG Zhance

“…According to the nonlinear and non-stationary characteristics of monthly runoff sequences, the quadratic decomposition method was combined with machine learning to construct a model for predicting monthly runoff. …”
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Homotopic Solution for 3D Darcy–Forchheimer Flow of Prandtl Fluid through Bidirectional Extending Surface with Cattaneo–Christov Heat and Mass Flux Model by Shamaila Batool, A. M. Alotaibi, Waris Khan, Ahmed Hussein Msmali, null Ikramullah, Wali Khan Mashwani

“…The Prandtl fluid motion is mathematically modeled using the law of conservations of mass, momentum, and energy. The set of coupled nonlinear PDEs is converted to ODEs by employing appropriate similarity relations. …”
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