Exercise Recommendation Model Based on Cognitive Level and Educational Big Data Mining by Yongming Pu, Hongming Chen

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Modern and future forestry based on biotechnology by Shihui Niu, Jihua Ding, Changzheng Xu, Jing Wang

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Microstructures and Toughening of TiC-TiB2 Ceramic Composites with Cr-Based Alloy Phase Prepared by Combustion Synthesis in High-Gravity Field by Xuegang Huang, Chun Yin, Zhongmin Zhao, Long Zhang, Junyan Wu

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Spatial-Temporal Evolution Characteristics and Influencing Factors of Vegetation NDVI in Hebei Province by LIAN Xi, CHENG Yao, YUAN Jidong, YUAN Zeshen

“…In order to explore the vegetation growth status and influencing factors,Hebei Province is taken as the research area.Based on satellite remote sensing data and meteorological data,the Mann-Kendall trend test,Sen slope,and partial correlation analysis are used to explore the temporal and spatial distribution characteristics of vegetation in Hebei Province,and the influencing factors of vegetation NDVI change in Hebei Province are analyzed by combining the correlation among NDVI,climatic factors,and human activities.The results show that ① the NDVI value of vegetation in Hebei Province from 2001 to 2020 shows an overall growth trend,with an average annual growth rate of 2.84×10^-3.Specifically,it shows a rapid growth trend from 2001 to 2005 and a slow growth trend from 2005 to 2020, with fluctuations.②The NDVI value of vegetation in the study area increases gradually from south to north,and the vegetation improvement area (81.71%) is greater than that in the degraded area (13.79%),and the improvement area is mainly concentrated in Chengde and Zhangjiakou City.③Human activities (GDP) are one of the main influencing factors affecting the growth of NDVI,followed by climatic factors (precipitation and temperature).The change in GDP has a significant impact on vegetation growth,and the improvement of vegetation in Hebei Province is mainly related to forest land and grassland.Among the climatic factors,precipitation is the main influencing factor.…”
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Wind-Induced Response of Inclined and Yawed Ice-Accreted Stay Cable Models by Songyu Cao, Himan Hojat Jalali, Elena Dragomirescu

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Microannulus Formation Mechanism at the Cementing Interface of a Thermal Recovery Well during Cyclic Steam Injection by JiWei Wu, XueGang Wang, Lin Song, ShouMing Zhong, WenFeng Yin

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Survey on Encoding Schemes for Genomic Data Representation and Feature Learning—From Signal Processing to Machine Learning by Ning Yu, Zhihua Li, Zeng Yu

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An effective feature selection approach based on hybrid Grey Wolf Optimizer and Genetic Algorithm for hyperspectral image by Yiqun Shang, Minrui Zheng, Jiayang Li, Xinqi Zheng

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Toward Intelligent Intrusion Prediction for Wireless Sensor Networks Using Three-Layer Brain-Like Learning by Jun Wu, Song Liu, Zhenyu Zhou, Ming Zhan

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Bioaccumulation, sources and health risk assessment of polycyclic aromatic hydrocarbons in Lilium davidii var. unicolor. by Haixu Sun, Tianxiang Xia, Hongguang Cheng, Zhenzhen Wu, Qianding Cheng, Lu Lu, Chunbao Fu

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The Optimization of a Virtual Dual Production-Inventory System under Dynamic Supply Disruption Risk by Yu Chen, Liyuan Liu, Victor Shi, Yibin Zhang, Jing Zhu

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Inverse Analysis of the Partitioning Deformation Modulusof High-Arch Dams Based on Quantum Genetic Algorithm by Yantao Zhu, Xinqiang Niu, Jimin Wang, Chongshi Gu, Erfeng Zhao, Lixian Huang

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The Absorption and Distribution of Heavy Metals of Dominant Plant for Ecological Restoration of Stone Coal Mine by Lu Peng, Shuang Luo, Lizhi Xiong, Hailong Sun

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An Improved Strong Tracking Kalman Filter Algorithm for the Initial Alignment of the Shearer by Yuming Chen, Wei Li, Gaifang Xin, Hai Yang, Ting Xia

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Forecasting the number of rural migrant workers in Chongqing using the optimized grey N_Verhulst model by Dai Liu, Chengxiang He, Jianlong Ma

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Shuffled Frog Leaping Algorithm for Preemptive Project Scheduling Problems with Resource Vacations Based on Patterson Set by Yi Han, Ikou Kaku, Jianhu Cai, Yanlai Li, Chao Yang, Lili Deng

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Robust sparse time‐frequency analysis for data missing scenarios by Yingpin Chen, Yuming Huang, Jianhua Song

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Climate change, air pollution and chronic respiratory diseases: understanding risk factors and the need for adaptive strategies by Jiayu Xu, Zekang Su, Chenchen Liu, Yuxuan Nie, Liangliang Cui

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An Optimal Composition Strategy for Knowledge Service Component Based on Flexible Tracking Particle Swarm Algorithm by Yan-chao Yin, Fu-zhao Chen, Wei-zhi Liao, Cui-yin Liu

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Modeling Simultaneous Multiple Fracturing Using the Combined Finite-Discrete Element Method by Quansheng Liu, Lei Sun, Pingli Liu, Lei Chen

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