• 제목/요약/키워드: Adequacy

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송전 선로의 과부하를 고려한 복합 전력계통의 공급능력평가 (Adequacy Evaluation of Composite Power System considering Overload of Transmission Lines)

  • 강성록;최재석;차준민;노대석;도대호
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2002년도 하계학술대회 논문집 A
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    • pp.172-174
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    • 2002
  • This paper proposes a new methodology for adequacy evaluation of composite power system considering an ambiguity of overload of transmission lines. Nodal arrival powers under considering an ambiguity of overload of transmission lines can be evaluated using the proposed method. Fuzzy set theory has been used in order to consider the permission level of overload of transmission lines. The problem of adequacy evaluation has been formulated using fuzzy linear programing. The effectiveness of the proposed method considering permissible overload of transmission lines has been demonstrated on the IEEE RTS.

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초등학교 수학 교과서 내용 적정성 분석 - 단원 구성 및 어휘 사용을 중심으로 - (A study to analyze the adequacy of elementary school mathematics textbooks - Based on the unit structure and vocabulary -)

  • 권점례
    • 한국수학교육학회지시리즈A:수학교육
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    • 제55권3호
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    • pp.281-297
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    • 2016
  • There has being developed elementary mathematics textbooks currently based on the 2015 revised mathematics curriculum. Vocabularies used in mathematics textbooks are mainly determined by the authors to develop textbooks. The purpose of this study was to investigate the adequacy of elementary school mathematics textbooks based on the unit structure and vocabulary, and to provide implications for elementary mathematics textbooks which is currently in development, in accordance with the 2015 revised curriculum. As a result, there were found some problems in the unit structure and vocabulary of elementary mathematics textbooks.

연변 조선족과 한.중 대학생의 영양소 섭취상태 비교 (A Study on Nutrient Intake of College Student in Seoul and Yanbian)

  • 장남수;조우균;이종미
    • 한국식생활문화학회지
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    • 제16권5호
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    • pp.492-503
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    • 2001
  • The purpose of this study was to compare nutritional intakes of college students in Seoul and Yanbian by ethnic : Korean, Korean-Chinese, Chinese. The questionnaire were applied to individual interviewing method. Statisticai data analysis was completed by SAS 8.0 package program for t-test, ANOVA and multiple comparison. The results of this study were as follows. Average energy intake per day was high in Korean-Chinese. Nutrient Adequacy Ratio(NAR) was highest in iron and lowest in zinc. Mean Adequacy Ratio(MAR) score was $0.68{\sim}0.85$ for each group. The indexes of nutritional quality(INQ) were over 1.0 for most nutrients except 0.41 of zinc and 0.76 of calcium. Average energy intake ranked high in Korean-Chinese, Korean and Chinese.

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치매노인 부양주부의 가정자원에 따른 부양스트레스 (Caregiving Stress in Caring for Dementia Elderly according to Family Resource in Homemakers)

  • 장윤옥
    • 가정과삶의질연구
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    • 제21권3호
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    • pp.157-169
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    • 2003
  • The Purpose of this study was to explore the degree of caregiving stress in caring for dementia elderly according to objective resources, perceived adequacy resource and locus of control in homemakers. The subjects of this study were 141 married women who had cared for dementia elderly. A questionnaire was used as survey method. The data was analyzed by means of Cronbach $\alpha$, factor analysis, MANOVA, and Scheffe test. The main findings were as follows First, there was significant difference in the degree of caregiving stress in caring for dementia elderly according to objective resources. Second, the degree of caregiving stress in caring for dementia elderly was significantly different according to perceived adequacy resource. Third, the degree of caregiving stress in caring for dementia elderly differed significantly according locus of control.

주부의 가족여가활동 참여도와 생활만족도에 관한 연구 (A Study on the Level of Family Leisure Participation and the Level of Life Satisfaction of Housewives)

  • 홍성희
    • 대한가정학회지
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    • 제34권2호
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    • pp.71-84
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    • 1996
  • The purpose of this study was to examine the factors that influenced level of housewives family leisure participation and their life satisfaction. So, this study analysed the effects of motivations, resources, and perceived adquacy of resources on family leisure activities and life satisfaction of housewives. Data for 389 housewives residing in Daegu were selected from using questionnaire. The major findings were : 1. Motivations for family leisure activities were classified in change-oriented, family-oriented, relaxational, and imitational types. 2. The participation level of family leisure activity showed significant differences by motivation for family leisure, resources for family leisure, and perceived adequacy of resources. 3. The level of life satisfaction showed significant differences by motivation for leisure, resources for leisure, and perceived adequacy of resources. And the variables which affected the level of life satisfaction independently were family-oriented motivation for leisure, space for leisure, perceived adequacy of burgets and space for leisure.

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건강영향을 고려한 산업단지 개발의 계획 적정성 평가방법론 연구 (A Study on a Plan Adequacy Evaluation forIndustrial Complex Development Considering Health Impact)

  • 신문식;이영수;하종식
    • 환경영향평가
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    • 제29권2호
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    • pp.93-111
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    • 2020
  • 현행 국내 건강영향평가는 환경영향평가제도 내 특정 개발사업에 한해서 수행된다. 하지만 건강영향평가가 개발사업의 시행 단계에서 수행됨에 따라 심각한 건강 악영향이 예상됨에도 불구하고 적절한 조치를 취하지 못하는 경우가 있다. 특히 산업단지 개발사업의 경우에 운영으로 인한 건강 악영향 예상 및 개발단계에서의 건강영향평가로 인해 환경갈등이 자주 발생하고 있다. 이 연구는 산업단지 개발에 있어 건강영향을 고려한 계획 적정성 평가 방법을 제안하고 이를 실제 개발사업들에 적용하고자 하였다. 이 연구는 US EPA의 CalEnviroScreen 3.0 및 US ATSDR의 Public Health Assessment를 참조해서 건강영향을 고려한 계획 적정성 평가 방법을 제안하였다. 평가 방법으로는 지역사회 특성, 배경노출, 그리고 개발부담으로 구분한 지표 사용을 제안하였다. 문헌조사 등을 통해 지역사회 특성 지표 5개, 배경노출 지표 3개, 개발부담 지표 7개를 선정하였으며, 건강영향평가 관련 전문가들에게 계층적 의사결정법 설문조사를 통해 각 지표의 가중치를 산출하였다. 과거 국가 주도의 3개 국가산업단지 개발사업에 대해 시범 적용하였으며, 이를 통해 각 지표들에 대한 활용자료 및 평가값을 세분화하여 평가 방법을 구체화하였다. 건강영향을 고려한 계획 적정성 기준은 산업단지 개발에 대한 정부의 정책방향과 연계하여 첫째 총점기준, 둘째 총점 및 지역사회 특성기준, 그리고 개발부담 지표에 예외를 둔 총점 및 지역사회 특성기준으로 제안하였다.

융복합시대 설계의 경제성 등 검토(VE) 발주 및 입찰시 문제점과 개선방안에 관한 연구 (Improvements for Ordering and Bidding of VE in Convergence Era)

  • 박명수;양해술
    • 디지털융복합연구
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    • 제14권3호
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    • pp.25-33
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    • 2016
  • 본 연구에서 전문가 집단을 대상으로 조사하여 실증 분석한 결과는 다음과 같다. 첫째, 직급과 수의계약 입찰 방식 문제점 간에는 분포의 차이가 없는 것으로 나타났다. 둘째, 직급과 현행 설계VE 발주 방식 적절성 간에는 분포의 차이가 있는 것으로 나타나, 현행 설계VE 발주방식 적절성이 직급 간에는 관련성이 있어 인식을 다르게 하는것으로 분석 되었다. 셋째, 소속기관과 현행 설계VE 발주방식 적절성간에는 분포의 차이가 없는것으로 나타났다. 넷째, 소속기관과 용역대가 적절성간에는 분포의 차이가 있는것으로 나타났으며, 소속기관들이 용역대가 적절성을 상호 인식하는데는 소속기관별로 인식의 차이가 있는 것으로 분석되었다. 다섯째, 경력과 참여업체 자격 필요성간에는 분포의 차이가 있는것으로 나타났다. 여섯째, 경력과 참여업체 제한조건 적절성은 분포의 차이가 있는것으로 나타났다. 따라서 수의계약 입찰방식과 용역적정 수행기간에서는 문제점이 나타나지 않았으나, 용역대가 적절성, 참여업체 자격 필요성, 참여업체 제한조건은 구체적으로 관련성이 있는것으로 나타났다.

Tissue Adequacy and Safety of Percutaneous Transthoracic Needle Biopsy for Molecular Analysis in Non-Small Cell Lung Cancer: A Systematic Review and Meta-analysis

  • Bo Da Nam;Soon Ho Yoon;Hyunsook Hong;Jung Hwa Hwang;Jin Mo Goo;Suyeon Park
    • Korean Journal of Radiology
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    • 제22권12호
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    • pp.2082-2093
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    • 2021
  • Objective: We conducted a systematic review and meta-analysis of the tissue adequacy and complication rates of percutaneous transthoracic needle biopsy (PTNB) for molecular analysis in patients with non-small cell lung cancer (NSCLC). Materials and Methods: We performed a literature search of the OVID-MEDLINE and Embase databases to identify original studies on the tissue adequacy and complication rates of PTNB for molecular analysis in patients with NSCLC published between January 2005 and January 2020. Inverse variance and random-effects models were used to evaluate and acquire meta-analytic estimates of the outcomes. To explore heterogeneity across the studies, univariable and multivariable metaregression analyses were performed. Results: A total of 21 studies with 2232 biopsies (initial biopsy, 8 studies; rebiopsy after therapy, 13 studies) were included. The pooled rates of tissue adequacy and complications were 89.3% (95% confidence interval [CI]: 85.6%-92.6%; I2 = 0.81) and 17.3% (95% CI: 12.1%-23.1%; I2 = 0.89), respectively. These rates were 93.5% and 22.2% for the initial biopsies and 86.2% and 16.8% for the rebiopsies, respectively. Severe complications, including pneumothorax requiring chest tube placement and massive hemoptysis, occurred in 0.7% of the cases (95% CI: 0%-2.2%; I2 = 0.67). Multivariable meta-regression analysis showed that the tissue adequacy rate was not significantly lower in studies on rebiopsies (p = 0.058). The complication rate was significantly higher in studies that preferentially included older adults (p = 0.001). Conclusion: PTNB demonstrated an average tissue adequacy rate of 89.3% for molecular analysis in patients with NSCLC, with a complication rate of 17.3%. PTNB is a generally safe and effective diagnostic procedure for obtaining tissue samples for molecular analysis in NSCLC. Rebiopsy may be performed actively with an acceptable risk of complications if clinically required.

무기체계에서의 인간공학적 설계 적합성 평가 사례연구 (A Case Study on the Evaluation of a Design Adequacy of Human Factors for a Weapon System)

  • 이영봉;이상태
    • 산업공학
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    • 제3권1호
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    • pp.13-20
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    • 1990
  • The application of human-factor concept in developing a complex weapon system is important for system engineer to determine the system performance and reliability. This paper describes the evaluation procedure of human factors in the X-system wherein the evaluation result provides a better performance than the previous model in operatability and maintainability. The criteria used for the evaluation of a design adequacy of the X-system are based on the military human-factor standards.

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도시형 자기부상열차의 실용화에 대한 현황 분석 및 전망 (Analysis of Status and Prospect for Practical Use of Urban Maglev train)

  • 정경렬;박철호;윤세균;최용훈
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2006년도 추계학술대회 특별세미나 특별세션
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    • pp.113-122
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    • 2006
  • To investigate the adequacy of maglev train system to future urban transport environments, first we derived minimum necessity requirements of the new-transit system by analyzing the issues in the urban transit management and new needs of transportation customers. Then the conformity of Maglev train to the requirements was examined. With respect to this adequacy analysis, policy directions and agenda of the making practical use of urban transit Maglev system' is proposed.

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