https://www.syu.ac.kr/grad/2021%eb%85%84-%ea%b5%ad%eb%a6%bd%ec%a4%91%ec%95%99%eb%8f%84%ec%84%9c%ea%b4%80-1%ec%9d%b8-%eb%af%b8%eb%94%94%ec%96%b4-%ec%95%84%ec%b9%b4%eb%8d%b0%eb%af%b8-%eb%aa%a8%ec%a7%91/%ea%b5%ad%eb%a6%bd%ec%a4%91%ec%95%99%eb%8f%84%ec%84%9c%ea%b4%80_%eb%b9%84%ec%a6%88%eb%8b%88%ec%8a%a4-%ec%a0%84%eb%ac%b8-%ed%81%ac%eb%a6%ac%ec%97%90%ec%9d%b4%ed%84%b0_%ed%8f%ac%ec%8a%a4%ed%84%b0/