In PERT(CPM)programme,the sequence optimization problem in adjusting parallel activities into sequential activities has not been entirely solved yet .The K S method commonly used in the world and given by Kato Shokichi (Japan ) is applied to get
Qi Jianxun Wang Guangqing . , {{custom_author.name_en}}.
The Optimization Theory of Ordered Chain for Three Activities. Systems Engineering - Theory & Practice, 1991, 11(3): 0-0 https://doi.org/10.12011/1000-6788(1991)3-108434