Funding for this research was provided by:
National Research Foundation of Korea (2017R1E1A1A01075927)
Institute for Information and Communications Technology Promotion (2020-0-00862)
Article History
Received: 3 December 2019
Revised: 21 June 2020
Accepted: 11 August 2020
First Online: 4 September 2020
Free to read: This content has been made available to all.