Sung, Hanul
Min, Jeesoo
Koo, Donghun
Eom, Hyeonsang
Funding for this research was provided by:
Institute for Information and communications Technology Promotion (R0190-16-2012)
National Research Foundation of Korea (NRF-2017R1A2B4004513, NRF-2016M3C4A7952587)
National Research Foundation of Korea (21A20151113068)
Article History
Received: 2 January 2019
Revised: 29 September 2020
Accepted: 11 October 2020
First Online: 1 February 2021