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DGI를 이용한 4면형 아트리움의 형태변수별 눈부심 평가
김경상(Kyoung-Sang Kim),김지현(Ji-Hyun Kim),송규동(Kyoo-Dong Song) 한국생활환경학회 2011 한국생활환경학회지 Vol.18 No.3
The importance of an atrium's skylight is to let the daylight in. However the more area of the skylights you design, the more daylights the indoor can get. Therefore there are some problems occurred for example, the increase of cooling load and discomfort glares. Although there are some studies of the amount of lights in the atrium but the study of evaluating discomfort glare has not been sufficient due to difficulties in selecting observer's location and the direction of occupant's eyes. Accordingly basic data of resolving the glare problem is also insufficient when the atrium is designed. Atrium WI, orientation and PAR are used in this study as various configurations of the atrium and those configurations are compared and analyzed in order to figure out the probability of potential glare in it. As a method for evaluating glare occurrence, the observer's position was fixed in the center of the atrium well and hemispherical view was rendered by the fisheye option of RADIANCE program. Then, find glare command was used to find glare sources and glare index command with DGI (Daylight Glare Index) parameters was used to calculate DGI values. As a result, when the direct sun was viewed from the observer position and the reflection was occurred by a glazing area of its walls the value of DGI was higher than 28, which indicates intolerable glares. Therefore it is judged that if the evaluation of glares is considered by various configurations derived from this study, it can be used as basic data of designing the atrium efficiently without the discomfort glares.
일조시간 분석의 객관화를 위한 점분석 방식 개선방안 연구
김경상(Kim Kyoung-Sang),김지현(Kim Ji-Hyun),송규동(Song Kyoo-Dong) 한국건축친환경설비학회 2008 한국건축친환경설비학회 학술발표대회 논문집 Vol.- No.-
The existing building code regulates the minimum distance between buildings and the minimum required sunshine hours for winter solstice to ensure the right of sunshine. Especially, the minimum sunshine hours have been guaranteed by the constitution after the right for the people to live in a healthy and comfortable environment was established. However, the existing regulation on the sunshine hours only considers the duration of sunshine hours, but ignores the minimum amount of sunlight. In addition, analyzing of method has not established suitable standard yet. For that reason, each different process of studies bring incompatible results. It should a consider matter that it can be change the right of sunshine and will affect to many legal aspect in our society. Therefore, to solve the contradictable problem between various existing analysis methods fo sunshine, this study suggested compute pertinent form and size of grid to improve point analysis, and then proposes basic data to amend program which is applied point analysis that can reduce a relative rate of error not more than 5%.
장연주(Yeonju Jang),최승윤(SeongYune Choi),강윤지(Yunji Kang),김경상(Kyungsang Kim),김원유(Wonyou Kim),김정남(Jeongnam Kim),김학인(Hakin-In Kim),손지원(Son-Jee Won),장병철(Byeong-Cheol Jang),김한성(Han-Sung Kim),박광현(Kwang-Hyun Par 한국컴퓨터교육학회 2021 한국컴퓨터교육학회 학술발표대회논문집 Vol.25 No.1(A)
인공지능(AI) 교육에 대한 전 세계적 열기가 뜨거운 가운데, 우리나라에서는 AI 인재를 양성하기 위한 교육정책을 제시하였고 교육현장과 학계에서는 초등학생들부터 시작하는 AI 교육과정과 교육 자료를 제시하고 있다. 하지만 초등학교에서 교사들이 수업에 직접 활용할 수 있는 교수학습자료는 매우 부족한 실정이다. 따라서 본 연구에서는 초등 교사들이 효과적으로 AI 교육을 할 수 잇도록 프로그램을 개발하는 것을 목적으로 한다. 본 연구에서 개발한 교육 프로그램은 이론과 실습을 포괄하는 구성이며 AI의 윤리적인 이슈까지 포괄할 수 있도록 내용을 구성하였다. 학생들은 본 프로그램을 통하여 AI를 체험하고, AI의 원리에 대해 학습하며 블록코딩을 통한 실습을 할 수 있으며 교사들이 현장에서 바로 활용할 수 있도록 지도안과 활동 예시들을 함께 제공하였다.
비드법 발포 폴리스티렌 단열재의 밀도와 열전도율의 상관관계에 관한 연구
박태성(Park, Tae-Seong),김경상(Kim, Kyoung-Sang),강재식(Kang, Jae-Sik) 대한건축학회 2020 대한건축학회 학술발표대회 논문집 Vol.40 No.1
This study analyzed the relationship between thermal conductivity and density of expanded polystyrene sheet. A database was developed based on the test results in recent three years and their performances were analyzed. In addition, their performance tests on density and thermal conductivity based on specimens sold in the market currently were conducted in six institutions including qualified testing agencies. As a result, the performance analysis results through the database exhibited that all apartments whose density was corresponded to Types 1 and 2 had the corresponding thermal conductivity values, respectively, and the performance test measurements through the specimens were also similar to the above analysis results.
페놀폼 단열재의 물성 특성 및 성능 평가에 관한 연구 - 현장 반입된 페놀폼 단열재를 중심으로 -
박태성(Park, Tae-Seong),김경상(Kim, Kyoung-Ssng) 대한건축학회 2019 대한건축학회 학술발표대회 논문집 Vol.39 No.1
This study discussed the characteristics and performance evaluation on phenolic foam insulation whose demand is increasing in recent years for building insulating materials in Korea, In particular, this study focused on phenolic foam insulation used in building sites. The tests were conducted by utilizing the test methods in accordance with KS M 4898. In addition, cone calorimeter test, harmful gas emission test, indoor air quality test were conducted to evaluate the performance of the phenolic foam insulation. The test results exhibited that the absorptivity exceeded the performance criterion by 0.1 to 0.26%, and the insulation did not satisfy the cone calorimeter test in Cases 3 and 4 that contained the face plate. In addition, the formaldehyde emission was 0.024 to 0.459 mg/(m2·h) in all cases except for the two cases. The test results on the samples introduced in the site revealed that the institutional regulations on performance criteria of phenolic foam insulation and product performances are needed to be improved.