1. JinHyo Joseph Yun (corresponding author), DGIST and Open Innovation Academy, DalseongGun, Daegu 42988, South Korea.
2. Xiaofei Zhao, DGIST and Open Innovation Academy, DalseongGun, Daegu, South Korea.
3. EuiSeub Jeong, KISTI, Seoul, South Korea.
4. SangWoo Kim, KISTI, Seoul, South Korea.
5. KyungHun Kim, LADI, Daegu, South Korea.
6. Sung Deuk Hahm, Kyonggi University, Suwon, South Korea.