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자료포락분석 및 토빗회귀분석을 활용한 경기도 국공립유치원의 상대적 운영효율성 분석
이재무,조경서 육아정책연구소 2018 육아정책연구 Vol.12 No.1
본 연구는 경기도 내 6개 도시 272개 국공립유치원의 상대적 운영효율성을 자료포락분석 및 토빗회귀분석을 통해 분석하였다. 분석결과, 상대적으로 가장 효율적인 유치원으로 13개소 국공립유치원들이 선별되었고, 고양시에 주재한 유치원들이 분석대상 유치원들 중에서는 비교적 모범적이고 높은 효율성을 보이는 것으로 확인되었다. 가장 높은 효율치를 보인 국공립유치원들은 교사 수가 많고 시설 크기나 예산은 낮은 것으로 확인되었으며, 인구가 많은 도시의 국공립유치원과 단설유치원의 운영효율성이 높은 것으로 파악되어 지역별 및 유치원 유형별로 상대적 효율성 수준이 차이가 있는 것으로 판명되었다. 또한 효율성에 영향을 미치는 요인에 대한 분석과정을 거쳐 국공립유치원의 상대적 효율치에 가장 영향을 미치는 요인은 교사 수이며, 분석요인들의 조합은 안정적 상태임을 판별하였다. This study analyzed the relative managerial efficiency of 272 public kindergartens in 6cities in Gyeonggido by data envelopment analysis and tobit regression analysis. As a result, 13 public kindergartens were selected as the most efficient public kindergartens. Public kindergartens located in Goyangsi showed relatively exemplary and high efficiency among the public kindergartens analyzed in this study. Public kindergartens identified as the most efficient were found to have a larger number of teachers, a smaller facility size and budget size. It was shown that the efficiency rates varied by locations and the types of public kindergartens whether they were affiliated or not affiliated with another school. For example, the efficiency of cities with high populations was higher than that of other cities. The analysis of factors affecting the efficiency revealed that the number of teachers was the most influential factor in the relative efficiency of public kindergartens, and that the combination of analysis factors was stable.
관계 데이타베이스에서의 불확정 정보에 대한 질의어 최적화에 관한 연구
李在舞,吳廉德 釜山敎育大學 1988 부산교육대학 논문집 Vol.24 No.1
There are many types of information occurred in real-world which are required not only definite information but also indefinite information. We define tables to represent various kinds of indefinite information which are applicable to any relational operators and show that this tables are well-defined. Also, we define relational algebraic operations or indefinite infromation under these tables and consider query optimization algorithm and propose various types of answers for a query under the defined IIRS(Indefinite Information Representation System). Consequently, we show that if any query is transformed into reltional algebraic expression and is applied to these table, many kinds of answer types which include definite type, indefinite type, and indefinite type condition, can be given to the users.
객체 지향 데이타 베이스 시스템을 이용한 하이퍼 텍스트 시스템의 모델링에 관한 연구
李在舞 釜山敎育大學 1992 부산교육대학 논문집 Vol.28 No.1
Hypertext system is being used in many applications because of their flexible structure and the great browsing freedom they give to diverse communities of users. However, this freedom and flexibility is the cause of one of its main problem: the lost in hyperspace (disorientation) problem. One reason for the complexity of hypertext database is large number of nodes and links that compose them. Another reason is result from the lack of conceptional model for hypertext application. This paper describes a flexible and extended hypertext data model to solve the problem using object oriented database. Therefore, we that can capture formally the essence and abstraction of the combination of an object oriented database with hypertext.
李在舞 釜山敎育大學 1988 부산교육대학 논문집 Vol.24 No.1
This paper presents that design for ICAI system doing proofs in geometry It consists of process modules and knowledge bases. AND/OR GRAPH used for to variously prove in instruction environments. This system proposes inference mechanisms expert knowledge and algorithms for verifing and processing. This system detects exact error by preoder rule and transfers control to instruction module for guiding teaching knowledges.