MONOLITHIC PURE CENTER PIEZOELECTRIC ROTARY PLATFORM WITHOUT ACTUATOR REDUNDANCY by WU YuXi, YANG YiLing, WU GaoHua, DU HuiLin, WEI YanDing

“…In order to achieve high⁃precision and pure⁃center rotation motion in micro/nanomanipulation tasks,a monolithic pure⁃center rotation platform was designed using two⁃stage compliant amplification mechanisms and a single piezoelectric actuator.Compared with other platforms,the designed rotation platform exhibited the merits of no actuator redundancy,high natural frequency,large rotation angle,and compact structure.The static and dynamic models were established by combining the pseudo⁃rigid body and finite element methods.Also,the output angle,input stiffness,output stiffness,and natural frequency of the rotation platform were simulated by Ansys software.Finally,an experimental test system was built,and the performance of the platform was tested through several experiments.Also,the feedforward control was used to compensate for the piezoelectric hysteresis.The experimental results show that the rotation angle is 16.8 mrad,the natural frequency is 527.3 Hz,and the resolution is 0.3μrad.Meanwhile,the hysteresis nonlinearity is compensated effectively using feedforward control.Thus,the platform is capable the high precision center rotation operation.…”
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Experimental and Numerical Study of Strength and Failure Behavior of Precracked Marble under True Triaxial Compression by Yong Han, Yuemao Zhao, Jinglong Li

“…Also, the peak strength nonlinearly decreases with the increase of cracks’ areal intensity. …”
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Dynamics Response Analysis of Subway Gear Transmission System with the Excitation of Time Variable Speed and Damping by Wu Huijie, Yang Jianwei, Wang Fumin

“…In order to research the influence of the excitation of variable speed and damping on subway gear transmission system,the subway helical gears model of the bend- torsion- axes is built,and the model considered the time- varying meshing stiffness,gear meshing error,backlash nonlinearity and torque of outside parameters during the subway working. …”
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Improved 2D Discrete Hyperchaos Mapping with Complex Behaviour and Algebraic Structure for Strong S-Boxes Generation by Musheer Ahmad, Eesa Al-Solami

“…The standard set of performance parameters such as nonlinearity, strict avalanche criterion, bits independent criterion, differential uniformity, and linear approximation probability is quantified to assess the security and robustness of proposed S-box. …”
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On Modelling and Comparative Study of LMS and RLS Algorithms for Synthesis of MSA by Ahmad Kamal Hassan, Adnan Affandi

“…We initially provide a tutorial-like exposition for the design aspects of MSA and for the analytical framework of the two algorithms while our second aim is to take advantage of high nonlinearity of MSA to compare the effectiveness of LMS and that of RLS algorithms. …”
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Fault Diagnosis of Crane Gearbox based on Variational Mode Decomposition and PSO-SVM by Wubang Yang, Bingpeng Gao, Fei Chen, Xinghe Zhang, Weidong Ma

“…The vibration signal of crane gearbox has the characteristics of low signal-to-noise ratio and nonlinearity，so it needs some professional knowledge and experience to realize fault diagnosis. …”
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Numerical and Analytical Study of Fluid Flow and Thermal Transfer in a Rough Fracture by Xiangyue Wen, Xiting Long, Zhaoying Yang

“…The research results show that the temperature of the fluid in the rough fracture is nonlinearly distributed along the flow direction and the higher the flow velocity, the higher the heat transfer efficiency. …”
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Ultrafast silicon photonic reservoir computing engine delivering over 200 TOPS by Dongliang Wang, Yikun Nie, Gaolei Hu, Hon Ki Tsang, Chaoran Huang

“…Despite numerous optical implementations, its speed and scalability remain limited by the need to establish recurrent connections and achieve efficient optical nonlinearities. This work proposes a streamlined photonic RC design based on a new paradigm, called next-generation RC, which overcomes these limitations. …”
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Hysteresis Modeling of Magnetic Shape Memory Alloy Actuator Based on Krasnosel'skii-Pokrovskii Model by Miaolei Zhou, Shoubin Wang, Wei Gao

“…Compared with traditional actuators, MSMA actuator has the advantages as fast response and large deformation; however, the hysteresis nonlinearity of the MSMA actuator restricts its further improving of control precision. …”
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Hybrid Depth-Separable Residual Networks for Hyperspectral Image Classification by Cuijie Zhao, Hongdong Zhao, Guozhen Wang, Hong Chen

“…Due to the high dimensionality of spectral features, limited samples of ground truth, and high nonlinearity of hyperspectral data, effective classification of HSI based on deep convolutional neural networks is still difficult. …”
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Enhanced YOLOv8-based method for space debris detection using cross-scale feature fusion by Yang Guo, Xianlong Yin, Yao Xiao, Zhengxu Zhao, Xu Yang, Chenggang Dai

“…Nevertheless, a substantial volume of data, intricate noise, nonlinearity, and target discontinuities significantly affect the observational process. …”
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Fault Diagnosis for Reducer via Improved LMD and SVM-RFE-MRMR by Xiaoguang Zhang, Zhenyue Song, Dandan Li, Wei Zhang, Zhike Zhao, Yingying Chen

“…The vibration signals are usually characterized by nonstationary, nonlinearity, and high frequency shocks, and the redundant features degrade the performance of fault diagnosis methods. …”
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Unit commitment of power systems considering system inertia constraints and uncertainties by Yuxin Weng, Guangchao Geng, Quanyuan Jiang

“…Furthermore, inertia constraints suitable for mixed‐integer programming model are derived to address the nonlinearity of conventional frequency constraints. Second, considering the uncertainties of load and wind energy from renewable sources, a unit commitment model with inertia constraints is constructed, and a robust method is used to solve the uncertainties. …”
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Study on Seepage Simulation of High Pressure Grouting in Microfractured Rock Mass by Kai Wang, Lianguo Wang, Bo Ren, Hao Fan

“…The grouting pressure and the fracture opening changes are nonlinearly attenuated along the grout seepage direction.…”
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LPR-MLP: A Novel Health Prediction Model for Transmission Lines in Grid Sensor Networks by Yunliang Chen, Shaoqian Chen, Nian Zhang, Hao Liu, Honglei Jing, Geyong Min

“…However, the traditional methods have limitations caused by the characteristics of high dimensions, multimodality, nonlinearity, and heterogeneity of the data collected by sensors. …”
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Dynamic Reactive Power Optimization Strategy for AC/DC Hybrid Power Grid Considering Different Wind Power Penetration Levels by Nan Feng, Yuyao Feng, Yun Su, Yajun Zhang, Tao Niu

“…Subsequently, an optimal scheduling strategy for dynamic reactive power compensation devices is formulated to maximize the value of the fault recovery indicator. Considering the nonlinearity and non-convexity of the optimization model, trajectory sensitivity method and whale optimization algorithm are adopted to enhance the solution efficiency. …”
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Design formation of a transmedia project by A. М. Arakelyan, Yu. V. Vorontsova

“…The article studies such a phenomenon of the media sphere as transmedia, which is characterized by the nonlinearity and hybridity of audiovisual forms. It is a new key feature of the media sphere and makes significant changes to screen art. …”
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Chaotic Behaviour Investigation of a Front Opposed-Hemispherical Spiral-Grooved Air Bearing System by Cheng-Chi Wang

“…Studies show that some of the design problems encountered are dynamic and include critical speed, nonlinearity, gas film pressure, unbalanced rotors, and even poor design, all of which can result in the generation of chaotic aperiodic motion and instability under certain conditions. …”
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Schrödinger–Hardy system without the Ambrosetti–Rabinowitz condition on Carnot groups by Wenjing Chen, Fang Yu

“…The difficulty is not only the nonlinearities $F_u$ and $F_v$ without Ambrosetti–Rabinowitz condition, but also the Hardy terms and the structure on Carnot groups. …”
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L'éducation à la santé et la formation personnelle du futur enseignant by Olena Momot, Serhii Novik, Yevheniia Shostak, Olena Zhdanova-Nedilko

“…The research model helps to improve the process of educating a future teacher's personality in terms of creating a health-preserving environment of higher education, is able apply to creatively acquired healthpreserving knowledge, skills and abilities in practice as well as to find, process, analyze, use information independently, think nonlinearly, use modern content in future teacher's activities, methods of education, technologies, pedagogical techniques, acquire the necessary personal qualities, selfchange and strive for continuous self-improvement. …”
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