Research on Quantitative Evaluation of Post Safety Competency of Port OperatorsHang Jin, Guodong Meng, Yanhua Hu, Pengyu Jia, Wenxin Jiang and Shuifen ZhanE3S Web Conf., 257 (2021) 02087DOI: https://doi.org/10.1051/e3sconf/202125702087