时间表问题是运筹学领域和系统工程领域中的典型组合优化问题，是由于事件对时间和空间的资源争夺而产生的，属于NP完全类问题。
Timetable problem is a typical problem of combined optimization in the fields of operational research and systems engineering, which belongs to NP problem.
在运筹学、管理科学、信息科学、系统科学、计算机科学以及工程等众多领域都存在着客观的或人为的不确定性。
In operations research, management science, information science, systems science, computer science, engineering and many other areas, there is objective or artificial uncertainty.
简要考察了钱学森在系统科学体系、系统工程、控制论、运筹学和系统学方面的主要贡献，论证了他作为中国系统科学导师的地位。
This paper observed Qian Xuesen s contribution to system science, system engineering, control theory and systematology in China, and showed his position as the tutor of Chinese system science.
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