• 제목/요약/키워드: EVALUATION CRITERIA

검색결과 4,608건 처리시간 0.028초

유한요소해석에 의한 ASME Code 적용 압력용기 스터드 암나사산의 건전성 평가 (Integrity Evaluation for Stud Female Threads on Pressure Vessel according to ASME Code using FEM)

  • 김문영;정남용
    • 대한기계학회논문집A
    • /
    • 제27권6호
    • /
    • pp.930-937
    • /
    • 2003
  • The extension of design life among power plants is increasingly becoming a world-wide trend. Kori #1 unit in Korea is operating two cycle. It has two man-ways for tube inspection in a steam generator which is one of the important components in a nuclear power plant. Especially, stud bolts fur man-way cover have damaged by disassembly and assembly several times and degradation for bolt materials for long term operation. It should be evaluated and compared by ASME Code criteria for integrity evaluation. Integrity evaluation criteria which has been made by the manufacturer is not applied on the stud bolts of nuclear pressure vessels directly because it is controlled by the yield stress of ASME Code. It can apply evaluation criteria through FEM analysis to damaged female threads and to evaluated safety fer helical-coil method which is used according to Code Case-N-496-1. From analysis results, we found .that it is the same results between stress intensity which got from FEM analysis on damaged female threads over 10% by manufacture integrity criteria and 2/3 yield strength criteria on ASME Code. It was also confirmed that the helical-coil repair method would be safe.

전문대학 공학기술교육 프로그램 인증제 도입의 필요성과 주요 외국의 운영 사례 (Need of Accreditation System for Engineering Technology Programs in Junior College and Case of the Main Foreign Countries)

  • 함승연;노태천
    • 공학교육연구
    • /
    • 제7권1호
    • /
    • pp.51-63
    • /
    • 2004
  • 우리나라에서 전문대학 공학기술교육의 질을 높이고 여러 문제점을 해결하기 위해서는 전문대학 공학 기술교육 프로그램 인증제 도입의 적극적인 검토가 필요하다. 전문대학 인증제도를 실시하여 시드니 협정의 가입국이 되면 우리나라의 전문대학 공학교육은 국제적인 수준의 교육을 인증 받으면서 졸업생을 국제적으로 인정받을 수 있다. 이를 위해서는 이미 전문대학 공학기술교육 인증제를 실시하거나 시드니 협정의 가입국의 인증제도와 평가준거를 살펴보고 우리나라 교육현실과 산업계의 요구를 반영한 평가준거를 개발하여 전문대학 공학교육 인증을 실시해야 할 것이다. 그리고 우리나라에서 전문대학 공학교육 프로그램 인증제도를 실시하고 정착하기 위해서는 인증의 필요성을 인식하고 산 학 연이 상호 협력하여 우리나라에 적합한 인증제도와 평가준거를 만드는 일이 필요할 것이다.

50.60대 여성의 라이프스타일에 따른 의복구매행동에 관한 연구 -의복평가기준과 구매장소를 중심으로- (A Study on the Clothing Buying Behavior according to Lifestyle Type of Women in Their 50′s and 60′s -Focused on the Clothing Evaluation Criteria and Buying Place-)

  • 한성지;양리나;김문숙
    • 복식문화연구
    • /
    • 제10권5호
    • /
    • pp.504-517
    • /
    • 2002
  • The purposes of this study were to analyze the lifestyle of women in their 50's and 60's and to provide the basis fur the efficient strategy of silver market by classifying women in their 50's and 60's according to lifestyle types and investigating the effect of consumers' lifestyle and demographic characteristics on consumers' clothing evaluation criteria and buying place. In this study, a selfㆍadministered questionnaire was distributed to women in their 50's and 60's. 226 questionnaires of 350 were used in the following analysis. The data were analyzed with the SPSS package. The results of this study were as follows. First, lifestyle were analyzed to find out the underlying factors, and then the subjects were grouped according to factor scores by the cluster analysis. Four lifestyle types were defined. They were the traditional family-oriented, the ostentatious purchase, the economical material-oriented, the active economics-oriented type. Second, a consumer's clothing evaluation criteria were classified according to three characteristics - aesthetic, practical and ostentatious. A consumer's clothing evaluation criteria were significantly different depending on the consumer's lifestyle and demographic characteristics. All lifestyle types except ostentatious purchase type considered practical characteristic like easiness of washing/care, harmony with other clothing, quality and price. The higher education, income and clothing expense, the more a customer considered ostentatious characteristic like fashionability and reputation of brand in selection of clothing.

  • PDF

사이버교사의 만족도 요인 평가 준거 개발 및 타당도 분석 (The analysis of validity and Development of Evaluation Criteria for Cyber Teachers' Satisfaction Factors)

  • 김자미;김용;김정훈
    • 정보교육학회논문지
    • /
    • 제13권1호
    • /
    • pp.31-40
    • /
    • 2009
  • 사이버학습에서 사이버교사는 학생들과의 다양한 활동을 통해 학습을 지원하고 안내하는 역할을 담당한다. 따라서 사이버교사의 만족도를 높이는 것은 사이버학습의 효과를 높이는 데 기여하게 될 것이다. 이에 본 연구에서는 초중등 사이버학습에 참여하는 교사들의 만족도를 평가할 수 있는 평가 준거를 개발하고, 만족도에 영향을 미치는 변인을 분석하였다. 사이버교사 만족도 평가 준거는 내용타당도를 확보하였고, SPSS 및 AMOS를 이용하여 문항분석 및 평가 준거 요인의 적합도 지수 분석 등을 토대로 최종적으로 5개 요인에서 20개의 문항을 확정하였다.

  • PDF

Proposed Performance Criteria and Evaluation Procedures for Transmission System Planning in Korea

  • Kook, Kyung-Soo;Kim, Taihyun;Oh, Tae-Kyoo;Bang, Min-Jae
    • KIEE International Transactions on Power Engineering
    • /
    • 제2A권4호
    • /
    • pp.160-165
    • /
    • 2002
  • This paper describes a proposed performance criteria and evaluation procedures for transmission system planning in Korea. Performance criteria of the transmission system are expected to be used as a guideline for investment into a transmission network. Moreover, performance evaluation procedures, which are based on current practices and widely accepted theories, are suggested to achieve fair and acceptable results.

정보보호시스템 평가기준 보안기능 요구사항 분석

  • 조규민;황영석;이경구
    • 정보보호학회지
    • /
    • 제10권3호
    • /
    • pp.1-12
    • /
    • 2000
  • 정보보호시스템을 평가하기 위한 기준은 보안기능 요구사항 및 보증요구 사항으로 이루어진다 본고에서는 미국의 TCSEC(Trusted Computer System Evaluation Criteria)과 유럽의 ITSEC(Information Technology Security Evaluation Criteria) 국제표준 (SIO/IEC 15408) 으로 제정된 CC(Common Criteria for Information Technology Secuirty Evaluation)의 보안 기능 요구사항을 비교, 분석하고 국내에서 개발된 침입차단시스템과 침입탐지시스템 평가기준, 현재개발중인 사용자인증용 스마트카드 평가기준의 보안기능 요구사항을 소개한다.

  • PDF

구조방정식을 이용한 Website 평가방법에 관한 연구 (A study on the Website evaluation method using SEM)

  • 최재호;백인기;전영호
    • 한국감성과학회:학술대회논문집
    • /
    • 한국감성과학회 2001년도 춘계학술대회 논문집
    • /
    • pp.109-113
    • /
    • 2001
  • The purpose of this paper is to propose an analytical method for evaluating user satisfaction of Internet websites using the structural equation model(SEM). This paper is intended to identify critical evaluation factors of user satisfaction for websites to determine criteria for evaluating the websites, and use the criteria to develop a SEM model for quantitatively evaluation of each factors' effects of user satisfaction. The SEM model used 2 variables of usability and good-looks for the evaluation factors of websites user satisfaction and each factors have 4 sub evaluation criteria, 3 portal sites were evaluated to construct the SEM model, and 155 subjects participated the website evaluation using the walk-through and face-to-face survey method. Analysis results showed that the SEM model was statistically significant for all the 3 websites evaluated. Both the usability and good-looks two factors also showed significant effects to user satisfaction of websites and have positive correlation. The user satisfaction was more effected by the usability factor than good-looks, and the simplification and harmonization were the most critical sub-factors of the usability and good-looks.

  • PDF

AHP를 이용한 신규사업과제의 평가모형 개발 및 통신장비회사의 사례연구 (The Development of Evaluation Model for New Business Projects Using AHP and Case Study of Telecommunication Equipment Company)

  • 조성백;한인구
    • 한국경영과학회지
    • /
    • 제27권1호
    • /
    • pp.53-73
    • /
    • 2002
  • The launch of a new business is crucial to the future growth and profitability of a company. A new business project typically requires a large amount of resources while it has a high possibility of failure. The evaluation of new business opportunities is therefore quite a critical decision-making to companies. This evaluation includes screening of a large number of criteria at a time which often makes desision-making very complicated. Management should evaluate the business alternatives in a sound and consistent manner that is hard to achieve because the new business evaluation is a typical semi/unstructured decision-making problem. The difficulty in such an evaluation will increase if it is required for management to consider both quantitative and qualitative criteria simultaneously. Under these circumstances, this study has proposed a decision-making framework that utilizes analytical hierarchy process(AHP). This study has identified a set of criteria essential to the new business evaluation and suggested a systematic framework for it. Both qualitative and quantitative evaluations are incorporated into the single framework in this study.

지속가능한 에너지 관리를 위한 학교 에너지 생태 감사 평가 방안 개발 연구 (A Study on Energy Eco-Audit Evaluation Scheme at Schools for Sustainable Energy Management)

  • 남영숙
    • 한국환경교육학회지:환경교육
    • /
    • 제20권4호
    • /
    • pp.1-11
    • /
    • 2007
  • The purpose of this study is to develope energy eco-audit evaluation scheme for the sustainable energy management at schools in accordance with education for sustainable development. Energy eco-audit evaluation scheme was developed through critical review of preexisting evaluation methods, consensus searching for the process from field. The results of this study are as follows. The school energy eco-audit evaluation scheme has three criteria: data collection, energy program, and environmental review. First, criteria of data collection includes general affairs, school building construction, and energy use. Second, criteria of energy program stresses school administration system such as the democratic decision-making process and structures. Third, criteria of environmental review includes reporting process and preparing teaching/learning materials for sustainable energy management. In conclusion, school energy eco-audit evaluation scheme could find a new way to achieve extended effect for sustainable energy management in school. It also could continue to seek opportunities to raise their awareness of energy issue and environment. School committee and whole school are involved to continue to implement present action plan and prepare updated plan in order to reduce environmental impact in school. By doing so, it would be possible to play important role in both school administration and education for sustainable development.

  • PDF

디지털 교과서의 평가 준거 개발 (Development of Evaluation Criteria on Digital Text-book)

  • 정영식
    • 컴퓨터교육학회논문지
    • /
    • 제11권3호
    • /
    • pp.13-20
    • /
    • 2008
  • 교육과학기술부는 2007년부터 디지털 교과서 개발 사업을 추진하고 있다. 그러나 이에 대한 평가 준거가 마련되지 않아 우수한 디지털 교과서를 개발하고 선정하는데 어려움을 겪고 있다. 이에 본 연구에서는 디지털 교과서에 대한 평가 준거를 개발하기 위해 디지털 교과서와 유사한 개념을 분석하고, 디지털 교과서의 속성과 기능을 살펴보았다. 또한 평가 준거는 문헌 조사 결과를 토대로 초안을 작성하고, 작성된 초안을 델파이 조사와 전문가 협의회, 현장 적합성 평가 등을 통해 타당성을 높였다. 그 결과, 평가 영역을 교과 내용, 교수 설계, 플랫폼, 사용자 등 4가지로 구분하고, 각 영역별로 평가 요소를 선정하여 총 74개의 평가 문항을 개발하였다. 교과 내용 영역에서는 적법성, 타당성, 정확성으로 구분하였고, 교수 설계 영역에는 가독성, 심미성, 통섭성으로 구분하였다. 플랫폼 영역은 호환성, 내구성, 접근성으로 구분하였고, 사용자 영역은 효과성, 만족성, 용이성으로 구분하였다.

  • PDF