Multiple Model Adaptive Tracking Control Based on Adaptive Dynamic Programming by Kang Wang, Xiaoli Li, Yang Li

“…Adaptive dynamic programming (ADP) has been tested as an effective method for optimal control of nonlinear system. However, as the structure of ADP requires control input to satisfy the initial admissible control condition, the control performance may be deteriorated due to abrupt parameter change or system failure. …”
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The evolutionarydynamics of a population model with a strong Allee effect by Jim M. Cushing

“…An evolutionary game theoretic model for a population subject to predationand a strong Allee threshold of extinction is analyzed using, among othermethods, Poincaré-Bendixson theory. The model is a nonlinear, planeautonomous system whose state variables are population density and the meanof a phenotypic trait, which is subject to Darwinian evolution, thatdetermines the population's inherent (low density) growth rate (fitness). …”
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A simple model of the Draupner Wave Experiment by Graeme Hocking, Emma Nel, Alice Markham, Erick Mubai, Thama Duba, Samah Ali, Hloniphile Sithole Mthethwa, Morwakoma Matabane, Ndivhuwo Ndou, Katlego Sebogodi, Salma Ahmedai, Nyathi Freeman

“…There are a number of quite sophisticated models of these waves, but in this work we try to reproduce something like a rogue wave with a very simple free surface model, and in particular consider a wave generated in a circular tank by wave activity at the outer edge. Linear and nonlinear equations are derived and integrated to obtain the wave activity due to different generation mechanisms. …”
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Robust Position Control of PMSM Using Fractional-Order Sliding Mode Controller by Jiacai Huang, Hongsheng Li, YangQuan Chen, Qinghong Xu

“…The performance and robustness of the proposed method are analyzed and tested for nonlinear load torque disturbances, and simulation results show that the proposed algorithm is more robust and effective than the conventional SMC method.…”
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Simulation-based high-speed elongational rheometer for Carreau-type materials by Lukas Kannengießer, Walter Arne, Alexander Bier, Nicole Marheineke, Dirk W. Schubert, Raimund Wegener

“…The parametrically described material law for the elongational viscosity implies a nonlinear optimization problem for the parameter identification, for which we propose an efficient, robust gradient-based method. …”
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Economic-Oriented Stochastic Optimization in Advanced Process Control of Chemical Processes by László Dobos, András Király, János Abonyi

“…The concept is illustrated throughout by a well-known benchmark problem related to the control of a linear dynamical system and the model predictive control of a more complex nonlinear polymerization process.…”
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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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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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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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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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