TY - Computer Engineering and Applications A1 - ZHANG Wuyi, LI Jianguo, GONG Yuwen T1 - Safety Awareness Evolution Model of High-Altitude Parabolic and Falling Objects Prevention Y1 - 2021-01-01 JF - Computer Engineering and Applications JO - Computer Engineering and Applications SP - 254 EP - 260 VL - 57 IS - 1 UR - http://cea.ceaj.org N1 - 10.3778/j.issn.1002-8331.1910-0436 ER -