Hei-Tsz Chang

Stroke order computer-based assessment with grey measure scoring

Der-Bang Wu, Guey-Shya Chen, Yu-Du Jheng, 2009, 2009 IEEE International Conference on Grey Systems and Intelligent Services (GSIS 2009).

GM on Analyzing the First van Hiele Geometrical Thinking Level

Hsiu-Lan Ma, Der-Bang Wu, Hei-Tsz Chang, 2009 .