국내 중앙행정기관 웹사이트의 접근성과 사용성 평가 및 개선방안 연구

The objective of this research is to find out about the web accessibility compliance status of Korea government department and the interrelationship between accessibility and usability through an evaluation on web usability of users. Through this it intends to contribute to the improvement of the accessibility level of Korea government department websites through making proposals on problems, improvement methods and CSS(cascading style sheets) practical cases. This research is carried out being divided into a first evaluation and second evaluation. A Study is carried out on first, the accessibility compliance level of Korea government department websites and second, whether the site which complies well with web accessibility increases web usability for users through a web usability evaluation. The specialist evaluation average point of the first Korea government department accessibility evaluation result was 81.7 points being 9.3 points higher than last year but the web accessibility compliance rate of Korea government department turned out to be in the normal level. Especially, highest increase rate was shown in the replacement text compliance rate but there were only 11 places which complied 100 percent. Web accessibility on operation possibility and new technology area using only the keyboard turned out to the most insufficient area. In the second web usability evaluation result, web sites which comply well with the web accessibility guidelines were observed to increase web usability for both normal and disabled people but web sites which do not comply well were observed to lower the web usability making the web sites unavailable or inconvenient to use. Therefore, it can be concluded that there is a very close interrelationship between web accessibility and usability and thus compliance with web accessibility is not an option but a mandatory requirement. In addition, for researching compliance methods on web standards, an improvement method was proposed on web accessibility problems of Korea government department websites by creating websites which use CSS and suggesting practical cases.