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2009 개정 교육과정에 따른 5, 6학년 초등과학과 교사용 지도서에 제시된 발문 유형 분석
김경아 ( Gyeong Ah Kim ),이형철 ( Hyeong Cheol Lee ) 한국초등과학교육학회 2016 초등과학교육 Vol.35 No.1
The purpose of this study was to analyze question`s patterns in elementary school science teacher`s guide books of 5, 6th grade under the 2009 revised curriculum. A modified analysis framework based on Blosser`s classified system was used to analyze 1,982 questions extracted from elementary science teacher`s guide books by grade, by domain, and by teaching and learning stage. The findings of this study were as follows. First, of the 1,982 questions, the most prominent type of question was the propositional question and the following was the reproductive question. And, in comparing the question`s patterns between 5, 6th grade, it was found that 6th grade had higher rate of close typed question, while 5th grade had higher rate of open typed question in its curriculum. Secondly, a comparative study about two domains, material and energy science domain and earth and life science domain, showed that the number of questions of each domain was not much different. However, it was found that propositional questions and applicable questions showed a higher rate in material and energy science domain, and anticipated questions and open typed questions including divergent and evaluative question showed higher rate in earth and life science domain. Moreover, although the total number of questions from integration and my fun research domain`s contents was small, the rate of open typed questions was higher than any other domains. Finally, as a result of comparing and analyzing question`s pattern in teaching and learning stages, the rate of reproductive question and anticipated questions was high at the stage of introduction. At the stage of development, the rate of propositional and reproductive questions was high. At the stage of conclusion, the rate of synthetic and applicable questions was high.
김경아(Gyeong Ah Kim),송봉근(Bong Geun Song),김성현(Seoung Hyeon Kim),박건웅(Geon Ung Park),문한솔(Han Sol Mun),박경훈(Kyung Hun Park) 대한설비공학회 2019 대한설비공학회 학술발표대회논문집 Vol.2019 No.11
본 연구는 폭염 발생에 따라 증가하는 노후 건물의 냉방에너지를 감소하기 위하여 실제 건물에 쿨루프를 적용하여 레이어별 온도 감소를 계절별로 비교·분석하였다. 건물 실험은 2016년 8월부터 2018년 11월까지 실시되었으며, 조건이 거의 유사한 2개의 건물을 쿨루프 적용 건물과 미적용 건물로 구분하여 옥상표면온도, 천장표면온도, 천장 기온, 방 기온 데이터를 수집하였다. 쿨루프 효과를 계절별로 분석한 결과, 쿨루프 적용 시 모든 레이어의 온도가 감소하는 것을 확인하였다. 그러나 여름보다 겨울에 쿨루프 효과가 크게 나타나 쿨루프 적용을 위하여 사전에 해당지역의 기후, 건물의 물리적 특징(단열, 재질 등)을 고려해야 함을 확인할 수 있었다. 이후 실측 결과를 활용하여 모델링 결과를 보정한 뒤, 실험 건물의 냉방 및 난방 에너지 소비량을 비교·분석 하고자 한다.
지붕 색상 변화에 따른 건축물의 열환경 및 쿨루프 적용가능성 분석
김경아(Kim, Gyeong-Ah),최정민(Choi, Jeong-Min),박경훈(Park, Kyung-Hun) 한국건축친환경설비학회 2016 한국건축친환경설비학회 논문집 Vol.10 No.6
In this study, we compared the temperature in models with four different roof types: model A(green roof), B(white colored roof) , C(green colored roof), and D(black colored roof) using the simulation. During both summer and winter, the roof surface outside temperature was found to be the lowest on the model B in the daytime and the nighttime, whereas the model A had the highest temperature in the nighttime. The zone mean air temperature was the lowest on the model A and highest on model D in the summer daytime. During winter, the model B was found to have the lowest temperature. The model A and D had the highest temperature in the nighttime and daytime, respectively. This indicates that the use of model B as cool roofs in Korea could reduce building temperatures in the summer.
김경아(Gyeong Ah Kim),송봉근(Bong Geun Song),김성현(Seoung Hyeon Kim),박건웅(Geon Ung Park),문한솔(Han Sol Mun),박경훈(Kyung Hun Park) 대한설비공학회 2019 대한설비공학회 학술발표대회논문집 Vol.2019 No.11
This study aims to identify the effects of cool roofs by investigating building models located in Changwon that have roofs constructed of various types of materials and colors. The building model roofs were comprised of white, green, and black waterproof paints; white, green, and black asphalt shingles; and rooftop vegetation. The surface temperatures of the building model roofs were measured from May 29-August 14. To identify roof characteristics, the flow of energy from roof surfaces to the ambient air, and the amount of energy accumulated on the roofs, were investigated. Reflectivity, emissivity, weather conditions and net radiant energy were measured during 9:00–15:00 on July 31, 2014. The reflectivity and emissivity of the white waterproof painted roof and the white asphalt shingle roof, the “cool roofs,” were higher than the other roofs, and their surface temperatures and net radiant energy were lower than the other roofs. The surface temperature of the white waterproof painted roof was lower than the green and the black waterproof painted roofs by a maximum of 25℃; the surface temperature of the white asphalt shingle roof was lower than the green and the black asphalt shingle roofs by a maximum of 19℃.
UAV 열적외 영상을 활용한 피복재질별 표면온도 특성 분석
송봉근 ( Bong-geun Song ),김경아 ( Gyeong-ah Kim ),서경호 ( Kyeong-ho Seo ),이승원 ( Seung-won Lee ),박경훈 ( Kyung-hun Park ) 한국지리정보학회 2018 한국지리정보학회지 Vol.21 No.3
본 연구는 도시 열환경 문제를 개선하기 위해 UAV 영상 표면온도 자료를 이용하여 피복재질별 표면온도 특성을 분석하였다. 그리고 UAV 영상 표면온도를 유사한 시기에 측정된 현장 실측 표면온도와 비교하였다. UAV 영상과 실측 표면온도와 비교한 결과, 가장 큰 차이를 보이는 피복재질은 회색 콘크리트 지붕 재질로 약 7.8℃로 나타났다. 우레탄은 0.3℃ 차이로 가장 적었다. 산점도를 분석한 결과 설명력이 63.75%로 상관성이 높은 것으로 분석되었다. 표면온도가 가장 높은 재질은 금속지붕으로 48.9℃로 나타났고, 우레탄(43.4℃), 회색 콘크리트 지붕(42.9℃) 순이었다. 표면온도가 낮은 재질은 나지(30.2℃), 수목 및 잔디(30.2℃), 흰색 콘크리트 지붕(34.9℃)이었다. UAV 영상표면온도 자료는 피복재질의 열적특성을 정밀하게 분석 가능하였다. 향후, 실측자료와의 비교를 통해 UAV 영상의 정확성 검·보정과 위성영상과 연계하여 UAV 영상 자료의 활용성을 확대할 필요가 있다. The purpose of this study was to analyze the surface temperature of surface fabrics using UAV TIR images, to mitigate problems in the thermal environment of urban areas. Surface temperature values derived from UAV images were compared with those measured in-situ during the similar period as when the images were taken. The difference in the in-situ measured and UAV image derived surface temperatures is the highest for gray colored concrete roof fabrics, at 17℃, and urethane fabrics show the lowest difference, at 0.3℃. The experiment power of the scatter plot of in-situ measured and UAV image derived surface temperatures was 63.75%, indicating that the correlation between the two is high. The surface fabrics with high temperature are metal roofs(48.9℃), urethane(43.4℃), and gray colored concrete roofs(42.9℃), and those with low temperature are barren land(30.2℃), area with trees and lawns(30.2℃), and white colored concrete roofs(34.9℃). These results show that accurate analysis of the thermal characteristics of surface fabrics is possible using UAV images. In future, it will be necessary to increase the usability of UAV images via comparison with in-situ data and linkage to satellite imagery.