Chinese-born scientist Hsue-Shen Tsien (Xuesen Qian) is regarded as the father of systems engineering in China. This Science supplement follows his life and work, both in China and the United States, as he developed his theories and applications for systems engineering. Tsien retired in 1991 and died on October 31, 2009, leaving a vast legacy of work in systems engineering and many other fields that has improved our understanding of complex systems, how they work, and how to manage them. China is undoubtedly a stronger world power today because of Tsien’s research and influence.
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