On Singular Perturbations of Flexible and Variable-Speed Wind Turbines by R. Oulad Ben Zarouala, C. Vivas, J. Á. Acosta, L. El Bakkali

“…The successful approach is tested on high-order nonlinear aeroelastic simulator (FAST).…”
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A Uniform Robust Exact Differentiator Based Neuro-Fuzzy Fractional Order Sliding Mode Control for Optimal Standalone Solar Photovoltaic System by Safeer Ullah, Ahmed S. Alsafran, Ambe Harrison, Ghulam Hafeez, Abouobaida Hassan, Baheej Alghamdi, Habib Kraiem

“…The neural network accurately predicts nonlinear reference voltage trajectories, whereas the differentiator estimates unmeasurable states and external disturbances. …”
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Stagnation Point Flow of Nanofluid over a Moving Plate with Convective Boundary Condition and Magnetohydrodynamics by Fazle Mabood, Nopparat Pochai, Stanford Shateyi

“…The governing partial differential equations for the fluid flow, temperature, and concentration are reduced to a system of nonlinear ordinary differential equations. The derived similarity equations and corresponding boundary conditions are solved numerically using Runge-Kutta Fehlberg fourth-fifth order method. …”
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Local controllability and optimal control for\newline a model of combined anticancer therapy with control delays by Jerzy Klamka, Helmut Maurer, Andrzej Swierniak

“…Our numerical approach uses dicretization and nonlinear programming methods as well as the direct optimization of switching times. …”
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Effect of the Drum Height on the Seismic Behaviour of a Free-Standing Multidrum Column by Ante Buzov, Jure Radnić, Nikola Grgić, Goran Baloević

“…It is expected that the experimental database can be useful in the validation of nonlinear numerical models for the dynamic analysis of multidrum columns.…”
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Malicious attack-resistant secure localization algorithm for wireless sensor network by Kun XU, Hong-li LIU, Jie ZHAN, Zi-ji MA

“…Taking the computational complexity of RSRSL into account, the nonlinear and non-convex optimization problem was simplified into a semidefinite programming problem. …”
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A Novel Engine Mount with Semi-Active Dry Friction Damping by M. Lorenz, B. Heimann, V. Härtel

“…The normal force of the friction contact is applied by an electromagnetic actuator and can be varied dynamically. The nonlinear current-force-relation of the actuator is linearized. …”
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Stability of the RC Column under Horizontal Impacts by A. V. Alekseytsev

“…For this purpose, finite-element modeling of the system in spatial formulation, calculation according to the deformed scheme in the scope of nonlinear static analysis and dynamic transient process have been implemented. …”
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Threshold Accepting Heuristic for Fair Flow Optimization in Wireless Mesh Networks by Jarosław Hurkała, Tomasz Śliwiński

“…In the underlaying optimization problem, the physical medium properties cause strong interference among simultaneously operating node devices, leading to nonlinearities in the mixed-integer pricing subproblem. …”
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Rotating Machine Fault Diagnosis Based on Optimal Morphological Filter and Local Tangent Space Alignment by Shaojiang Dong, Lili Chen, Baoping Tang, Xiangyang Xu, Zhengyuan Gao, Juan Liu

“…In order to identify the fault of rotating machine effectively, a new method based on the morphological filter optimized by particle swarm optimization algorithm (PSO) and the nonlinear manifold learning algorithm local tangent space alignment (LTSA) is proposed. …”
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Low-Light Image Enhancement Based on Guided Image Filtering in Gradient Domain by Xiankun Sun, Huijie Liu, Shiqian Wu, Zhijun Fang, Chengfan Li, Jingyuan Yin

“…Afterwards, we obtain the reflection component and enhance it by nonlinear functions, sigmoid and gamma, respectively. …”
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Mathematical Modelling of Malaria Disease Transmission and Control. by Muhangi, Benard

“…This study suggested and analyzed the transmission dynamics of malaria disease in a population using a nonlinear mathematical model. The deterministic compartmental model was examined using stability theory of differential equations. …”
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Relationship between albumin-corrected anion gap and lumbar spine bone mineral density: a cross-sectional study by Aiguo Liu, Aiguo Liu, Ting Ying, Shuang Deng, Chenxu Wang, Chenxu Wang, Ziwen Zhao, Sitong Zhang, Han Xiao, Chengqing Yi, Dejian Li

“…The association between ACAG and lumbar spine BMD was evaluated using multiple regression models, and a generalized additive model was employed to identify potential nonlinear relationships.ResultsThe analysis revealed a significant negative correlation between ACAG and lumbar spine BMD (P < 0.001). …”
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The Association Between Neutrophil‐Percentage‐to‐Albumin Ratio (NPAR) and Mortality Among Individuals With Cancer: Insights From National Health and Nutrition Examination Survey... by Xinyang Li, Meng Wu, Minxin Chen, Rufei Liu, Qingxu Tao, Yun Hu, Jinming Yu, Dawei Chen

“…Our analysis further identified a non‐linear relationship between NPAR and all‐cause mortality risk (p‐nonlinear < 0.05), while no non‐linear relationship was found with cancer‐related mortality risk. …”
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Heterogeneous integration of amorphous silicon carbide on thin film lithium niobate by Zizheng Li, Naresh Sharma, Bruno Lopez-Rodriguez, Roald van der Kolk, Thomas Scholte, Hugo Voncken, Jasper van der Boom, Simon Gröblacher, Iman Esmaeil Zadeh

“…Our platform offers a CMOS-compatible and scalable approach for the implementation of future fast electro-optic modulators and reconfigurable photonic circuits, as well as nonlinear processes that can benefit from involving both second- and third-order nonlinearities.…”
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The relationship between cardiometabolic Index and diabetic kidney disease in people with diabetes by Jianping Kong, Wenting Tao, Yuhong Sun, Yong Xu, Hailun Li, Jing Li

“…The study employed Generalized Additive Models (GAM) and smooth curve fitting methods for investigating the nonlinear relationship between CMI and DKD. Two-stage regression analysis was applied for investigating threshold effects in the connection between CMI and DKD. …”
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Association of TyG index with mortality at 28 days in sepsis patients in intensive care from MIMIC IV database by Heping Xu, Jinyuan Xie, Yan Xia, Huan Niu, Hong Wang, Feng Zhan

“…Our study revealed a nonlinear U-shaped relationship between the TyG index and 28-day all-cause mortality, with a critical point at a TyG index of 9.03. …”
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Effect of different clay additions to concrete on its ultrasonic acoustic parameters and compressive strength by Wenxiang Wu, Shunchao Chen, Yong Wu, Xiangyang Zhang, Debiao Kong, Jifeng Wen

“…Specifically, as $$\:{\gamma\:}_{Mc}$$ increases, there is a non-linear relationship between compressive strength and $$\:{\gamma\:}_{Mc}$$ (R²=0.97); When $$\:{\gamma\:}_{Mc}$$ is greater than 10%, the sound velocity and sound time values change significantly, and both show linear and nonlinear relationships with the mud content; As $$\:{\gamma\:}_{Mc}$$ increases, the amplitude also exhibits a nonlinear relationship with $$\:{\gamma\:}_{Mc}$$ (R²=0.91);When $$\:{\gamma\:}_{Mc}$$ is greater than 20%, the frequency value changes significantly and shows a linear relationship with $$\:{\gamma\:}_{Mc}$$ (R²=0.95).In addition, concrete with higher mud content has a longer first wave period, larger waveform spacing, and faster signal attenuation.…”
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Association between vitamin D levels and preserved ratio impaired spirometry: an investigation of mediating roles of systemic inflammation and metabolic indicators by Tong Lin, Shanshan Huang, Fen Zhou, Xingkai Shen, Haiyan Mao

“…RCS analysis showed a nonlinear protective effect of vitamin D, with risk stabilizing at levels above 50 nmol/mL. …”
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Modelación numérica del concreto simple con elementos finitos mediante la teoría de la plasticidad y la función de fluencia de Hu y Schnobrich Numerical modeling of the simple conc... by Luis Rodríguez, Dorian Linero

“…An implicit algorithm of numerical integration was formulated to solve the nonlinear problem given by the material constitutive model. …”
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