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    Research on wind temperature prediction of tunneling working site based on PSO−SVR by Yanhe LI, Zhijun WAN, Zhenzi YU, Hong GOU, Wanli ZHAO, Jiale ZHOU, Peng SHI, Zheng ZHEN, Yuan ZHANG

    Published 2025-01-01
    “…Through field measurement and literature research, the training sample set of airflow temperature prediction in the tunnelling working site is established. …”
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    Research on POI quality prediction based on KPCA-GA-BP neural network by Lu LIU, Dan YANG, Ruijie CHEN, Jia LI, Xi ZHOU

    Published 2023-01-01
    “…At present, in network optimization, network quality evaluation and prediction are generally based on communities, and a flexible evaluation system for POI network quality was proposed following the research idea of “research on dimensionality increase and implementation of dimensionality reduction”.However, it involves many network KPI, resulting in a relatively complex evaluation system for POI network comprehensive quality and low prediction accuracy.In order to improve the prediction accuracy of POI network quality, KPCA was used to compress the correlation of input variables of BP neural network, the structure of BP neural network was simplified, and then the connection weights and threshold parameters of BP neural network were optimized through GA.Compared with the prediction results of traditional BP neural network, the prediction accuracy is improved by 10.9%, and the mean square error performance is significantly reduced, it can play a better supporting role in the prediction of POI network quality.…”
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    Research on the Power Flow of Distributed Generation Based on Micro-grid Experiment Platform by LI Zhiyong, WU Binbin, WU Hengliang, LI Yao

    Published 2014-01-01
    “…Test results show that the platform can provide semi-physical simulation basis for the research on power flow in distributed generation system.…”
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    Research on Static and Dynamic Characteristics of Spindle System of High Speed Milling Machine by ZHANG Yuan, WANG Lifeng, ZHANG Jin

    Published 2021-02-01
    “…Finally, experimental research is carried out. The results show that with the increase of bearing support stiffness, the amount of deformation gradually decreases and the natural frequency gradually increases; the resonance interval is around 815 86Hz, which does not cause resonance; the error is found to be less than 10% through experiments, which verifies the reliability of the simulation results. …”
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    Research of the Rigid-flexible Coupling Dynamics Simulation Analysis of Auxiliary Standing Mechanism by Zhou Hui, Qin Baorong, Bao Jiahua, Zhang Dongdong, Xiang Bingle, Wang Zhengxing

    Published 2016-01-01
    “…Based on the simulation model,the dynamic stress of upper and lower pipe in one movement cycle of the auxiliary standing mechanism is obtained,and the corresponding moment of the largest stress in the whole time course is further determined,then it is compared with the dynamic stress calculation results of the corresponding time in Workbench. The research results show that under the condition of the permitted error,the two results are basically consistent. …”
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