Notable alumni in the sciences include Nobel laureate Yang Chen Ning, who was awarded the Nobel Prize in Physics for his work with Tsung-Dao Lee on parity nonconservation of weak interaction; mathematician and winner of the Wolf Prize in Mathematics Shiing-Shen Chern, biologist Min Chueh Chang, theoretical physicist Zhou Peiyuan, astronomer Zhang Yuzhe, Leslie Ying, professor at the University at Buffalo and Editor-in-Chief of IEEE Transactions on Medical Imaging, James G. Dwyer Professor of Mechanical Engineering Qingyan Chen, Jianhua Lu, anthropologist Fei Xiaotong, sociologist and ethnologist Wu Wenzao, political scientist K. C. Hsiao, and Pan Guangdan.