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Yunrui Yang, Erfu Dai, Jun Yin, Lizhi Jia, Peng Zhang and Jianguo Sun
Based on the data of 2254 daily meteorological stations in China from 1961 to 2021, this study calculated the standardized precipitation evapotranspiration index (SPEI) of the national multi-time scale by using the FAO Penman?Monteith model to quantify t...
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Yansong Li, Yaning Chen, Yapeng Chen, Weili Duan, Jiayou Wang and Xu Wang
Global changes in drought and wetness and their future trends in arid regions have recently become a major focus of research attention. The Tarim River Basin (TRB) in Xinjiang, China, is among the most climate-sensitive regions in the world. This study u...
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Tian-Tai Zhang, Chang-Lei Dai, Shu-Ling Li, Chen-Yao Zhang, Yi-Ding Zhang and Miao Yu
This study analyzed frost formation data provided by the Harbin Meteorological Bureau and considered geographic factors, temperature, and population density. Various analytical methods, including linear fitting, the Mann?Kendall mutation test, the Pettit...
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Hao Sun, Yuejin Du and Qi Li
Amid the incessant evolution of the Internet, an array of cybersecurity threats has surged at an unprecedented rate. A notable antagonist within this plethora of attacks is the SQL injection assault, a prevalent form of Internet attack that poses a signi...
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Jun Yan, Haifan Xu, Linjuan Xu, Filip Gurkalo and Xiangyu Gao
Secondary perched rivers are extensively distributed in the lower section of the Yellow River, and their condition is grave, representing a significant peril to the flood control safety of this region. Consequently, conducting an analysis of their evolut...
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Dunjing Yu, Fang Deng, Hongyan Wang, Xiuhui Hou, Hualin Yang and Tikun Shan
This paper presents a weight optimization method for a nonlinear model predictive controller (NMPC) based on the genetic algorithm (GA) for ship trajectory tracking. The weight coefficients Q and R of the objective function in NMPC are obtained via the r...
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Jialin Hou, Jingtao Zhang, Wanying Wu, Tianguo Jin and Kai Zhou
Agricultural machinery rental is a new service form that uses big data in agriculture to improve the utilization rate of agricultural machinery and promote the development of the agricultural economy. To realize agricultural machinery scheduling optimiza...
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Kezhou Chen, Xing Liu, Shiteng Jin, Longfei Li, Xin He, Tao Wang, Guopeng Mi, Yinggang Shi and Wei Li
In order to realize the automatic cutting of arch shed pillars, an automatic cuttage device for an arch shed pillar with force feedback was designed in this study. First, the wind resistance of the arch shed was simulated and analyzed using ANSYS, and th...
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Yi-Bo Li, Hong-Bao Sang, Xiang Xiong and Yu-Rou Li
This paper proposes the hybrid adaptive genetic algorithm (HAGA) as an improved method for solving the NP-hard two-dimensional rectangular packing problem to maximize the filling rate of a rectangular sheet. The packing sequence and rotation state are en...
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Xinfeng Yang and Yicheng Qi
The optimization of bus scheduling is a key method to improve bus service. So, the purpose of this paper is to address the regional public transportation dispatching problem, while taking into account the association between the departure time of buses a...
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