Center for Education Accreditation;
Pusan National University;
Busan;
South Korea;
Department of Mathematics;
Pusan National University;
Busan;
South Korea;
Institute of Liberal Education;
Catholic University of Daegu;
Gyeongsan;
South Korea;
Von; Karman; Equation; Memory; Type; Delay; Damping; Term; General; Decay; Estimate;