https://www.syu.ac.kr/sscd/2023/03/22/%eb%b3%b4%eb%8f%84%ec%9e%90%eb%a3%8c-%ec%9e%90%ec%8b%a0%eb%a7%8c%ec%9d%98-%ea%bf%88%ec%9d%84-%ea%b0%80%ec%a7%84-%ec%9d%b4%ea%b3%b5%ea%b3%84-%ec%9e%a5%ec%95%a0%eb%8c%80%ed%95%99%ec%83%9d/