Ãâó : http://repository.hanyang.ac.kr/bitstream/20.500.11754/21107/1/%ea%b3%b5%ea%b3%b5%eb%94%94%ec%9e%90%ec%9d%b8%ec%9d%84%20%ed%99%9c%ec%9a%a9%ed%95%9c%20%eb%94%94%ec%9e%90%ec%9d%b8%ea%b5%90%ec%9c%a1%ec%97%90%20%ea%b4%80%ed%95%9c%20%ec%97%b0%ea%b5%ac.pdf