Development of quantitative evaluation tool for psychological changes ：S. Tazaki，A. Okazaki，J. Hattori，M. Nishihara，2011 Proceeding of Korean Society for Emotion & Sensibility，25-26，2011.5.20
The function to visualize the change and comparison of conceptual model visualization ：Hong-Seok Choi，Akira Okazaki，2011 Proceeding of Korean Society for Emotion & Sensibility，23-24，2011.5.20