Aggregated, Disorderly and Defective (ADD) Model. - Un-Don Choi; Eun-Hee Lee; Jung-Yong Park; Jong-Hee Park (IC-AI, 2002)

A Virtual SCG-based Model for Event Development. - Se-Jin Ji; Un-Don Choi; Jong-Hee Park; Young-Wook Woo; Won-Taek Hwang (IC-AI, 2002)

EOM Layered Implementation of Life Cycle. - Un-Don Choi; Jong-Hee Park (Applied Informatics, 2003)

Modeling of Plant Growth based on Juvenile Energy. - Jeong-Woo Kwon; Un-Don Choi; Jong-Hee Park (Modelling, Simulation, and Optimization, 2003)