Sign up for an Award
Participate with your entry in one of our professional or student awards.
Sign up for an awardLearn more:
Unsupported browser
You are using an outdated browser. Please upgrade your browser to improve your experience.
Unsupported browser
You are using an outdated browser. Please upgrade your browser to improve your experience.
Gears of children adjust for body size, and momentum is a combination of gear, depending on the size.
Yeungnam University
Dea gu, South Korea
Yeungnam University
Dea gu, South Korea
Guk hyun ,Kim
Sung yong ,Ryu
Sung hoon ,Jung
