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성층화된 유체 내에서 내부파와 표면파의 파형 변화 실험을 위한 수치적 연구
이주한(Ju-Han Lee),김관우(Kwan-Woo Kim),백광준(Kwang-Jun Paik),구원철(Won-Cheol Koo),김영규(Yeong-Gyu Kim) 한국해양공학회 2019 韓國海洋工學會誌 Vol.33 No.3
Internal waves occur at the interface between two layers caused by a seawater density difference. The internal waves generated by a body moving in a two-layer fluid are also related to the generation of surface waves because of their interaction. In these complex flow phenomena, the experimental measurements and experimental set-up for the wave patterns of the internal waves and surface waves are very difficult to perform in a laboratory. Therefore, studies have mainly been carried out using numerical analysis. However, model tests are needed to evaluate the accuracy of numerical models. In this study, the various experimental conditions were evaluated using CFD simulations before experiments to measure the wave patterns of the internal waves and surface waves in a stratified two-layer fluid. The numerical simulation conditions included variations in the densities of the fluids, depth of the two-layer fluid, and moving speed of the underwater body.
이주한(Lee, Ju-Han) 한국교육사상연구회 2007 敎育思想硏究 Vol.21 No.1
본고의 목적은 Dewey 철학에 나타난 공동체 개념을 분석하고 그것이 갖는 교육적 의미를 탐구하는 것이다. 이를 위해 먼저 Dewey의 저작들에 나타난 공동체 개념이 기술적 용법, 찬사적 용법, 규범적 용법으로 사용되고 있음을 밝히고 그 각각의 의미를 검토하였다. 다음으로 공동체의 다양한 용법들 중에서 특히 규범적 용법의 개념이 교육적으로 중요하다고 판단하여, 그것이 갖는 구체적인 의미를 규정하고 그 준거 및 핵심적 요체가 무엇인지를 탐색하였다. 그리고 마지막으로 공동체와 교육이 어떤 연관관계를 갖는지를 공동체 자체의 교육적 기능과 공동체를 위한 학교의 기능으로 나누어 고찰하였다. In chapter Ⅱ, I examined various usages of the word of community in Dewey's philosophy: descriptive, eulogistic and normative usage. In chapterⅢ, I examined the metaphysical, epistemological, psychological ground of Dewey's conception of community. And I clarified that Dewey's conception of community was defined as a group or social life participating in common activities, sharing the aims, meanings and beliefs of the shared activities, and controling or directing their activities in the light of the consequences of the activities. Also I made clear Dewey thought that the elements in criterion whether a group was a ideal and democratic community or not: How numerous and varied are the interests which are consciously shared? And how full and free is the interplay with other forms of association? In chapter Ⅳ, I maintained that community functioned as educational enterprise through communication, school as a representative/typical formal agent of education was framed to influence the mental and moral disposition of their members in Dewey's philosophy. And school has three major functions in relations of wide community which it is located: to provide a 'simplified environment, to provide a 'purified medium of action, to balance the various elements in social environment.
양곡창고의 패시브 디자인 요소에 관한 연구 - 정읍시 양곡 창고를 중심으로
이주한(Lee, Ju-Han),권낙영(Kwon, Nak-young),원정연(Won, ChungYeon) 대한건축학회 2022 대한건축학회 학술발표대회 논문집 Vol.42 No.2
This paper aim to record the building elements and performance of passive design strategies used in Koreas under-documented traditional Grain Warehouses. First, 8-Grain Warehouses, all located in Jeongeup, Saemgol, were analyzed per primary size, exterior material, and structure. Then passive design elements such as wall ventilation openings, roof fans, and thermal mass strategies were identified. Finally, we measured the indoor and out temperature and humidity to examine the effectiveness of the passive design elements. The following were the results; the indoor temperature was consistently at 24~25.5 °C; however, the humidity were consistently 10% or higher than the outside. These results are essential findings in understanding the passive design strategies implemented in neglected vernacular architecture typologies.