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도서원현상을 통해 본 공공도서관 이용자에 대한 인식의 문제
김영기 한국도서관정보학회 1992 한국도서관정보학회지 Vol.19 No.-
This study, that is made by an on-the-spot survey and a library survey, is aimed at finding some problems in the recognition regarding public library users and suggesting the clue to solve the problems revealed in the way of having compared with 'Book-Room' and Public Library. Poor material was always a troublemaker in this study. Especially the part of 'Book-Room' phenomenon is wholly dependent upon a field survey, that is, interview with a 'book-room' clerks, gathering the advertising leaflets, a close observation on 'Book-Room', etc. There are little printed materials, much less precedent research theses. In the other parts of this paper, there are needed good statistical materials, but the nortion presented in the public library user statistics-for example pupil, students, housewives, old men, the generality of people, etc.- is so vague that it is insufficient and unhelpful for this study. In my judgment, with all these limitations, this article gets some results as follows : 1. 'Book-Room' is the cultural organization which is being operated by, for, of the community inhabitants and it takes on the character of movement - labor movement, cultural movement, and community movement. 2. The pioneer of the Book-Room is 'Yangso Hyupdong chohap' (which means good book- cooperative association) lasted from 1978 to the next year. 3. 'Arom'(means learning) Book-Room is the first real Book-Room at Seomyon district in Pusan established in 1987. 4. Book-Room can be classified by its character as 'Labor BookRoom' and 'Cultural Book-Room'. There are 10 Labor BookRooms and 4 Cultural Book-Rooms in Pusan. 5. Labor Book-Rooms organized themselves to 'Labor Book-Room conference'. 6. Book-Rooms have done their best to extort the needs and interests of the community inhabitants, but relatively public libraries do not, hence the majority of residents are neglected from the public library service. This is at Book-Rooms' back to have been spread so quickly. 7. There is a very large gap between the component ratio of community inhabitants by class and that of public library users by same criterion, that is, in the case of the former, the labor class goes beyond a half point, in the latter, the majority of public library user is composed of students and housewives. 8. Researchers and librarians have concentrated their attention and effort not upon whole residents in community but upon existing users at present time. They do not try to develope potential users. So, researchers' and librarians' recognition regarding the public library users needs to be changed. 9. The concept of 'core-user' may be the key to solve the problems related with public library users. For the purpose of ensuring the 'core-user', it is necessary to study the community and inhabitants.
평판에서의 음향 방사파워와 구면파 모델을 이용한 빔형성 파워와의 비교
김영기,김양한,Kim, Young-Key,Kim, Yang-Hann 한국음향학회 1997 韓國音響學會誌 Vol.16 No.6
Beamforming method has a limited spatial resolution because of finite aperture size, so that the estimated source distributions are smoothed within the resolution. Especially for low frequency noise such as mechanical noise, this limitation often diminishes the direct use of beamforming method. In this study, the relation between smoothed beamforming and radiation power distribution of plate has been addressed. By adjustment of aperture size of array, the smoothed beamforming power shows radiation power distribution of plate. Numerical simulations are carried for simply supported plate.
치조골이 감소된 지대치를 이용한 고정성 국소의치의 유한요소법적 응력분석
김영기,최충국,정재헌,Kim, Young-Gi,Choi, Choong-Kug,Chung, Chae-Heon 대한치과보철학회 1995 대한치과보철학회지 Vol.33 No.1
The purpose of this study was to determine the displacement of prosthesis & abutment and the stress distribution patterns induced in the periodontium by applying force to the fixed prosthesis. Two levels of periodontal support were compared using two-dimensional finite element stress analysis after placement of 3unit or 4 unit fixed partial denture(FPD) in case of missing of the lower first molar. Concentrated vertical load was delivered at the cusp tip of the second bicuspid or the central fossa of the pontic. The following results were obtained : 1. The greater the loss of alveolar bone in abutment teeth area, the greater the displacement of FPD and the stress concentration in alveolar bone around abutment. 2. The amount and direction of displacement and distribution of stress in the 4-unit FPD was better than those in the 3-unit FPD. 3. Multiple abutments reduced the amount of mesial and downward displacement of the weaked abutments and more uniformly distributed the stresses.
도서관의 장애인서비스 기준 및지침의 구성요소 도출에 관한 연구
김영기,이연옥 한국문헌정보학회 2008 한국문헌정보학회지 Vol.42 No.2
본 연구의 핵심 내용은 장애인을 위한 도서관서비스의 강화를 위해 국내 도서관의 장애인서비스 현황 및 요구에 대한 조사분석과 국제도서관연맹(IFLA), 미국도서관협회(ALA) 등 외국기관들이 장애인을 대상으로 제정한 각종 지침과 정책 등에 대한 조사분석을 통해 국내 도서관들이 장애인서비스를 실시할 때 길잡이 역할을 할 수 있는 장애 유형별 지침과 기준의 구성요소를 도출하는 것이다. 도출된 구성요소는 도서관 내외부의 물리적 접근성 및 이동권 보장, 접근 가능 장서 구축, 서비스와 프로그램, 보조공학기기, 웹 접근성과 유니버설 디자인, 인력자원의 개발과 활용, 국내외 유관기관과의 협력 등의 일곱 가지로 유형화시켰으며, 각 요소별로 기준 및 지침에 포함되어야 할 주요 내용도 명시하였다. The purpose of standards and guidelines of library service for people with disability is to provide libraries, governments and other stakeholders with a framework for developing library services for people with disability. This paper is to identify the constituents of standards and guidelines of library service for people with disability. These constituents are developed by analysis and investigation of foreign standards and are based on many people's advice such as members of the advisory committee. Extracted constituents of standards and guidelines of library service for people with disability are as follows: physical accessibility to library building and facilities, construction of alternative formats, access to services and programs, assistance engineering devices, web accessibility and universal design, training and staff development, cooperation and networking etc. Finally, we clarified main contents of each element to be included in standard.
한글 웹 문서 클러스터링 성능향상을 위한 자질선정 기법 비교 연구
김영기,Kim Young-Gi 한국문헌정보학회 2005 한국문헌정보학회지 Vol.39 No.1
This Paper is a comparative study of feature selection methods for Korean web documents clustering. First, we focused on how the term feature and the co-link of web documents affect clustering performance. We clustered web documents by native term feature, co-link and both, and compared the output results with the originally allocated category. And we selected term features for each category using $X^2$, Information Gain (IG), and Mutual Information (MI) from training documents, and applied these features to other experimental documents. In addition we suggested a new method named Max Feature Selection, which selects terms that have the maximum count for a category in each experimental document, and applied $X^2$ (or MI or IG) values to each term instead of term frequency of documents, and clustered them. In the results, $X^2$ shows a better performance than IG or MI, but the difference appears to be slight. But when we applied the Max Feature Selection Method, the clustering Performance improved notably. Max Feature Selection is a simple but effective means of feature space reduction and shows powerful performance for Korean web document clustering.