v2n4

A Design of Car Door Anti-collision System	1-6
Fangyan Jiang, Jiayu Dai
Research on Calculation Technology of Strength and Fatigue Strength of Ship Structure	7-11
Jinyu Ren, Cong Liu
USV Obstacle Avoidance Path Planning Based on Reinforcement Learning	12-21
Tengbin Zhu
Research Progress on the Effect of Fertilizer Types on the Growth and Quality of Mung Bean	22-28
Zhu Rui, Xiaoling Wang, Hongquan Liu
Research on Ship Energy Management System	29-34
Bo Yin
Methods and Strategies of Improving College Students' Eloquence Ability in the New Era	35-39
Lei Xiao, Chao Zhang
Rail Optimization of Crane Turning Based on Quasi Quartic Bezier Curve with Three Shape Parameters	40-45
Zhangjie Wu
Protection and Development of Kangba Culture under the Background of Targeted Poverty Alleviation Policy of Tourism	46-50
Xingru Yin
Empirical Analysis of Influencing Factors of Exchange Rate	51-58
Tiantian Ma

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