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조경화,권순정,성민기,김선숙,Cho, Kyunghwa,Kwon, Soonjung,Sung, Minki,Kim, Sunsook 한국의료복지건축학회 2017 의료·복지 건축 Vol.22 No.3
Purpose: With the increasing of public-use facilities, there has been a growing concern over Indoor Air Quality(IAQ) of public-use facilities. Because the facilities are easy to be exposed to indoor air pollutants, they needs to be periodically managed the IAQ. Methods: In this study, indoor air pollutant concentrations of 24 vulnerable facilities were measured and compared. The measurements were conducted for pollutants which are defined in 'IAQ Control In Public-Use Facilities, etc. Act'. We took two measurements, the first was carried out in summer and the second was proceeded in winter. We analyzed the values according to the type of facilities and pollutants. Results: There was a difference in pollutant concentrations by the season and in occurrence characteristics by the measurement spot. Therefore, we need to manage pollutant concentrations by characteristics of occurrence. Implications: Based on the comparative analysis of pollutant concentrations, we suggested cause and improvement strategies for IAQ management of Vulnerable facilities.
Q3과 Testlet Variance 레벨 간의 관계로 국부의존성 검사
조경화(Kyunghwa Cho),이승진(Seungjin Lee) 전남대학교 교육문제연구소 2020 교육연구 Vol.42 No.2
지역 독립성은 문항 반응 이론의 세 가지 필수적인 가정 중 하나입니다. 지역 독립성은 측정 문항이 다른 문항과 관련이 없음을 의미합니다. Q3는 국부의존성을 측정하기 위해 널리 사용되는 추정 지수입니다. testlet(하부검사)는 문항들의 그룹을 의미합니다. 예를 들어, 독해 시험에서 각 독해에 적용되는 문항들은 그 독해의 다른 문항들과 관계가 있을 수 있음을 나타냅니다. 이 연구의 목적은 시뮬레이션을 통해 Q3을 이용한 국부의존성과 probit 2PL모델을 이용한 testlet효과를 측정하고, Q3와 testlet 효과의 관계를 조사하는 것입니다. 이 연구에서 실행된 시뮬레이션의 결과, Q3와 testlet 효과는 긍정적인 관계를 가지는 것으로 나타났습니다. Local Item Independence is one of the essential assumptions in Item Response Theory. Local Item Independence means any item of the measurement is not related to another item. Q3 is a widely used estimation index to measure local item dependence. Testlet indicates the group of items to be applied to each reading passage in the reading comprehension test. The purpose of this study is to obtain local item dependence by Q3 and the testlet effect with the probit 2PL model and to investigate the relationship between Q3 and the testlet effect on passage-based testing with a simulation study. Based on the simulation results, the level of testlet effect had a positive relationship with Q3.
조경화 ( Cho Kyunghwa ),권순정 ( Kwon Soonjung ),성민기 ( Sung Minki ),김선숙 ( Kim Sunsook ) 한국의료복지건축학회(구 한국의료복지시설학회) 2017 의료·복지 건축 Vol.23 No.2
Purpose: With the increasing of public-use facilities, there has been a growing concern over Indoor Air Quality(IAQ) of public-use facilities. Because the facilities are easy to be exposed to indoor air pollutants, they needs to be periodically managed the IAQ. Methods: In this study, indoor air pollutant concentrations of 24 vulnerable facilities were measured and compared. The measurements were conducted for pollutants which are defined in `IAQ Control In Public-Use Facilities, etc. Act`. We took two measurements, the first was carried out in summer and the second was proceeded in winter. We analyzed the values according to the type of facilities and pollutants. Results: There was a difference in pollutant concentrations by the season and in occurrence characteristics by the measurement spot. Therefore, we need to manage pollutant concentrations by characteristics of occurrence. Implications: Based on the comparative analysis of pollutant concentrations, we suggested cause and improvement strategies for IAQ management of Vulnerable facilities.