April. 29, 09:
Young Sang Choi presented dissertation thesis defense to the reading committee and his dissertation research was approved by the committee.

Feb. 28, 09:
Young Sang Choi completed phase 2 of user study with people with ALS (Amyotrophic Lateral Sclerosis) testing the assistive mobile manipulation robot, El-E, in which the robot delivered objects to users

April. 30, 08:
Young Sang Choi completed phase 1 of user study with people with ALS (Amyotrophic Lateral Sclerosis) testing the assistive mobile manipulation robot, El-E.

Feb. 20, 08:
Yonug Sang Choi successfully defended his proposal of doctoral thesis, "A Study of Human-Robot Interaction with an Assistive Robot for People with Severe Motor Impairments"