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상변화물질을 사용한 시트형 및 파이프형 축열재의 축열성능 평가를 위한 모형실험 연구
고진수,김병윤,박성우,Ko, Jin-Soo,Kim, Byung-Yun,Park, Sung-Woo 대한건축학회 2012 대한건축학회논문집 Vol.28 No.5
In this paper, the phase change material (PCM) to increase the heat capacity of buildings is applied to building materials. The building materials use not only sensible heat but also latent heat so that the building materials are useful to maintain the pleasant indoor environment and to save the building energy. The purpose of this paper is to reduce the greenhouse gases due to building use. The model experimental research results are as follows. (1) The test shows that the sheet or pipe type heat storage materials are effective to reduce the daily temperature range, rather than the standard type. (2) The sheet type material has better capacity than the pipe type material to delay the increase in indoor temperature. (3) The building material mixing the phase change material can be useful to maintain indoor comfortably.
고진수 ( Jin-su Ko ),황림우 ( Rim-woo Hwang ),김상호 ( Sang-ho Kim ),김영섭 ( Young-seop Kim ),이상범 ( Sang-burm Rhee ) 한국정보처리학회 2005 한국정보처리학회 학술대회논문집 Vol.12 No.1
의료기기의 디지털화로인해 의료영상분야도 디지털화되고 있다. 본 논문에서는 의료영상에서 발생하는 기하학적 변형에서도 개인정보를 인증할 수 있는 디지털 워터마킹을 제안한다. 제안한 방법은 디지털 영상을 주파수 공간으로 변환시킨 후 효과적인 워터마크 삽입을 위해 인간의 감지능력이 떨어지는 주파수 영역과 중요한 주파수 영역을 선택하였다. 그 다음 영상 전체에 반복적이며, 그 내용에 따라 적응적인 워터마크를 삽입하는 방법을 제시하였다.
아파트 매매 소요기간에 영향을 미치는 요인에 관한 연구: 서울시를 중심으로
고진수(Jinsoo Ko),최성호(Seong-Ho Choi),노승철(Seungchul Noh) 한국주택학회 2019 주택연구 Vol.27 No.1
The purpose of this study is to analyze the factors affecting the DOM (Days On Market) of apartment sale transactions in Seoul. From January 2014 to July 2016, the median DOM of apartments in Seoul was 22 days, and this gradually increased from 17 to 28 days in 2014-2016. Analysis of the factors affecting DOM using linear regression model yielded the following results. First, DOM is influenced more by seasonal factors such as sale price index and mortgage interest rate than the apartment attributes. This indicates that sale of an apartment is a complex phenomenon combined with the physical condition of the apartment as well as the expectation of price increase and financing problems. Second, the price negotiation between seller and buyer is considered to be an important factor because the ratio between the asking price and sale price is more influential than the asking price itself. Therefore, in order to reduce the social opportunity cost according to DOM, it is necessary to expand disclosure of real estate transaction details to accumulate enough information for sellers and buyers in relation to real prices.
상변화물질을 사용한 시트형 및 파이프형 축열재의 축열성능 평가를 위한 모형실험 연구
고진수(Ko Jin-Soo),김병윤(Kim Byung-Yun),박성우(Park Sung-Woo) 대한건축학회 2012 大韓建築學會論文集 : 構造系 Vol.28 No.5
In this paper, the phase change material (PCM) to increase the heat capacity of buildings is applied to building materials. The building materials use not only sensible heat but also latent heat so that the building materials are useful to maintain the pleasant indoor environment and to save the building energy. The purpose of this paper is to reduce the greenhouse gases due to building use. The model experimental research results are as follows. (1) The test shows that the sheet or pipe type heat storage materials are effective to reduce the daily temperature range, rather than the standard type. (2) The sheet type material has better capacity than the pipe type material to delay the increase in indoor temperature. (3) The building material mixing the phase change material can be useful to maintain indoor comfortably.