• 한국경영과학회:학술대회논문집
• /
• 대한산업공학회/한국경영과학회 1996년도 춘계공동학술대회논문집; 공군사관학교, 청주; 26-27 Apr. 1996
• /
• pp.96-99
• /
• 1996

본 연구는 CAD/CAM에서 3차원 물체를 표현하는 기법중 하나인 Solid Modeling을 구성하는 데이터 구조를 객체지향화 함으로써 보다 효율적이고 유연한 설계개발환경을 제공하고자 한다. 이를 위해서 가장 일반적으로 Solid Modeling을 표현하는 데이터 구조인 기존의 Half-Edge Data Structure를 기본모델로 하여 점(Vortex), 선(Edge), 면(Face), 입체(Solid)를 객체 Class로 하고 Euler Operator를 Method로 하는 객체지향 반모서리 데이터 구조(Object Oriented Half-Edge Data Structure)를 개발하였다.

• 한국콘텐츠학회논문지
• /
• 제8권7호
• /
• pp.85-92
• /
• 2008

메쉬는 삼차원 물체를 표현하기 위해 가장 널리 쓰이는 자료구조 중 하나이다. 지금까지 메쉬 자료구조로는 주어진 삼차원 물체의 표면 상의 정보만을 샘플링하는 표면 메쉬가 널리 쓰였다. 그러나, 컴퓨터의 처리능력이 향상됨에 따라, 콘텐츠 개발시 물체의 내부 정보까지 계산할 수 있는 볼륨 메쉬의 필요성이 점점 증대되고 있는 추세이다. 본 논문에서는 반면 (half-face) 자료구조 기반의 새로운 삼차원 볼륨 메쉬 라이브러리인 OpenVolMesh를 제안하고, 그 디자인과 구현에 관하여 기술한다. 제안하는 OpenVolMesh는 세계적으로 널리 쓰이고 있는 표면 메쉬 라이브러리인 OpenMesh 위에 볼륨 메쉬를 다룰 수 있는 자료구조를 추가하는 방식으로 디자인하였다. OpenVolMesh는 제네릭 프로그래밍 (generic programming), 메쉬 구성 요소에 대한 동적속성 할당 (primitive property), 배열 기반의 자료구조 등을 지원하며, OpenMesh와 소스 레벨에서의 호환성을 제공한다. 볼륨 메쉬 스무딩 및 CW-셀 분할과 같은 적용사례를 통해 OpenVolMesh가 삼차원 볼륨 기반의 콘텐츠 개발에 효과적으로 쓰일 수 있음을 보인다.

• 한국CDE학회논문집
• /
• 제1권1호
• /
• pp.1-19
• /
• 1996

Non-manifold topological representations can provide a single unified representation for mixed dimensional models or cellular models and thus have a great potential to be applied in many application areas. Various boundary representations for non-manifold topology have been proposed in recent years. These representations are mainly interested in describing the sufficient adjacency relationships and too redundant as a result. A model stored in these representations occupies too much storage space and is hard to be manipulated. In this paper, we proposed a compact hierarchical non-manifold boundary representation that is extended from the half-edge data structure for solid models by introducing the partial topological entities to represent some non-manifold conditions around a vertex, edge or face. This representation allows to reduce the redundancy of the existing schemes while full topological adjacencies are still derived without the loss of efficiency. To verify the statement above, the storage size requirement of the representation is compared with other existing representations and present some main procedures for querying and traversing the representation. We have also implemented a set of the generalized Euler operators that satisfy the Euler-Poincare formula for non-manifold geometric models.

• 대한가정학회지
• /
• 제29권3호
• /
• pp.227-246
• /
• 1991

The study examined work and family life of married women employed in a manufacturing industry. Data were gathered from the use of face-to-face interview method from a sample of 230 married working women. The major findings of this study can be summarized as follows: (1) Most of the respondents found the work repetitive and unappealing, with the double burden of a paid work and housework. Thus, it is necessary for the government to implement social policies for married working women, such as establishment of various child care centers, part-time jobs, and dissemination of egalitarian sex-role attitudes. (2) More than half of the respondents were born in rural areas and immigrated to the urban sectors, forming a nuclear family structure. Most of these women were married with love, but some of them could not have a marriage ceremony because of the economic reasons. Thus, it may be necessary to increase the service centers to offer a free marital ceremony. (3) About 30% of the respondents answered they left their preschool aged children unattended, after dismissing from a kindergarden on a private institution. It was shown that working women, even though they were in charge of child-rearing, did not have an effective mechanism to control or protect their children while they were away from home. Most of them frequently used material compensations from their children in order to make up their absence at home. (4) It was found that the strategy for working women to decrease a dual-role conflict is to make a hierachy on the work they to do and to do only basic housework for everyday life and to do the rest of work on a off-day.

• 보건교육건강증진학회지
• /
• 제24권4호
• /
• pp.41-64
• /
• 2007

Objectives: The purpose of this study was to verify the validity of the evaluation indicators on safety and health education programs provided to Korean industrial workers, by developing further. Methods: To develop the early evaluation indicator, the secondary analysis was made on 'Survey on Industrial safety & health trends', the national wide survey data product by Korea Occupational Safety & Health Agency, as well as the various examinations on literatures. To validate such developed evaluation indicator, 13 safety and health managers in Focus Group discussion to prove the reliability of the contents were composed. To confirm the face validity, the interview with 6 industrial safety and health education experts was held to study the appropriateness of the content. With the cooperation from Korea Occupational Safety & Health Agency, the structured survey was performed with the safety and health managers from 588 businesses who participated in the education program for the later half of 2006. In this study, the number of responses was randomly divided into 1:1 two groups, in which one group was for the Exploratory Factor Analysis and the other group was for the Confirmatory Factor Analysis. Results: The results were as follows. First, for the Structure category, 18 evaluation indicators were developed into 4 evaluation categories such as a preliminary examination, education staff and organization, education environment and rules/ regulation. Secondly, the Activity category was comprised of 10 evaluation indicators with respect to 2 areas of curriculum satisfaction and program evaluation. Finally, for the Output category, 9 evaluation indicators were developed into 2 evaluation areas such as documentation and information share and education effects. Conclusions: The evaluation indicators developed through this study will possibly develop and be applied to evaluation tools on safety and health education program, which may further become the standardized indicators to better operate the industrial safety and health education programs.