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이문주,노승탁,Ro, Sung Tack 대한기계학회 1977 대한기계학회논문집 Vol.1 No.4
The solidification process in a cylinder with finite thickness in studied by explicit finite difference method. The temperature distribution, the solidification front profile and the dischrged latent heat for the process are obtained. It is found that the solidification front profile is almost linear except in the vicinity of the initation of phase change. This result motivates us to use linear relations between the position of solidification and time for approximate calculations.
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이문주,최성근,추현욱,조용순,이우진 한국지반공학회 2007 한국지반공학회논문집 Vol.23 No.12
The effects of sitting pressure (σsit') during cementation, relative density and particle characteristics on the cohesion intercept due to cementation bonds and the confining stress inducing the breakage of cementation bonds (pi'(BP)) are investigated from drained shear tests on the cemented sands confined under the isotropic stress up to 400 kPa. It was observed from the experimental results that the cemented sands, with the same density and gypsum content, show similar values of cohesion intercept and pi'(BP), regardless of σsit'. Although the cohesion intercept and pi'(BP) of cemented sands are observed to increase with increasing relative density and cementation level, the relative density appears to have more significant effect on pi'(BP) than the cohesion intercept does. From analysing the test results of three different sands, it is shown that the smaller the particle size the larger the cohesion intercept and pi'(BP), due to the increased number of contact points between the particles.
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이문주,최성근,추현욱,조용순,이우진 한국지반공학회 2007 한국지반공학회논문집 Vol.23 No.5
The factors affecting the geotechnical properties of cemented sands are known to be relative density, cementation level, stress level, and particle characteristics such as particle size, shape and surface conditions. It has been widely accepted that the friction angle of cemented sands is not affected by cementation while the cohesion of cemented sands was significantly influenced by cementation. The cementation that is a critical component of the strength of cemented sands will be broken with increasing confining pressure and great caution is required in evaluating the cohesion of cemented specimens due to their fragilities. In this study, a series of drained shear tests were performed with specimens at various cementation levels and confining stresses to evaluate the strength parameters of cemented sands. From the experiments, it was concluded that the cohesion intercept of cemented sand experiences three distinctive zone (cementation control zone, transition zone, and stress control zone), as the cementation level and the confining stress varies. In addition, for accurate evaluation of the strength parameters, the level of confining stress triggering the breakage of cementation bond should be determined. In this study, the relationship between the maximum confining stresses capable of maintaining the cementation bond intact and unconfined compression strength of the cemented sand was established.
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이문주,최성근,추현욱,이우진 한국지반공학회 2008 한국지반공학회논문집 Vol.24 No.12
본 연구에서는 대형 챔버시험을 통해 결정된 고결모래의 콘선단저항과 고결모래의 횡방향구속 변형계수, 일축압축강도, 전단강도와의 관계를 검토하였다. 시험결과 모래의 상대밀도나 연직구속압 뿐만 아니라 고결효과가 커질수록 콘선단저항과 횡방향구속 변형계수가 증가하였다. 모래의 횡방향구속 변형계수는 상대밀도나 연직구속압보다 고결의 영향이 더 크게 작용하며, 반면 콘선단저항은 변형계수보다 상대밀도나 연직구속압의 영향이 더 크게 나타났다. 고결결합 미파괴 상태로 간주될 수 있는 일축압축강도, 전단강도, 횡방향구속 변형계수와는 달리 콘선단저항은 고결결합을 파괴하며 측정되기 때문에, 고결모래의 변형계수를 70~85% 정도 과소평가하였다. 또한 본 연구에서는 회귀분석을 통해 고결모래의 콘선단저항과 전단강도의 관계, 콘선단저항과 일축압축강도의 관계, 그리고 횡방향구속 변형계수와 콘선단저항, 일축압축강도의 관계가 표현되었다.
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동양음악을 통한 인성교육 검토- 『예기』「악기」편을 중심으로 -
이문주 한국효학회 2017 효학연구 Vol.0 No.26
We usually say the combination of Yin (音, sound) and Yue (樂, playing) as YinYue(音樂, music), but Ancient Chinese classics distinguished between Yin and Yue, and further added Sheng (聲, voice ) to that. This is significantly different from what we today think of music. Music usually refers to Yin in the previous way of thinking. Yin contained all of poetry, song, and dance. It sometimes contained formative elements such as painting, sculpture, and architecture, so it could be philosophy of integrated arts. However, this study could not properly discuss all of this. It aims to discuss the basics of traditional music theories, so it touches only on theories of traditional Korean music. In particular, it focuses on the Record of Music in the Book of Rites to discuss musical theories from the perspective of harmony. Since harmony is the most important in a community, this study aims to reveal that the harmony, pursued by music, and the harmony hoped for by a community could communicate with each other. That harmony is the filial piety(HYO) in the parents-children relationship, loyalty in the monarch-subject relationship, and the respect and love in the siblings relationship. The harmony was essential for a community, so it is examined in a big framework of cultivation of human nature. The most important factor in the cultivation of human nature is the interpersonal relationship, so this is examined from the total perspective of harmony. In other words, this study intends to prove that the harmony theory of music was essential to the harmony of a community. 본 연구는 음악이 인성함양에 얼마나 중요한가를 동양의 음악이론을 통해서 알아보았다. 동양음악은 단지 음악을 위한 음악이 아니라 인간의 정서를 순화하고 주변과의 하모니를 추구하는데 그 특징이 있다. 자연에서 와서 자연과 더불어 하모니하고 인간의 순수한 마음에서 우러나온 음의 소리를 예와 더불어 함께 논의하며 음악을 공동체의 가장 중요한 요소로 삼은 것은 동양의 음악의 가장 중요한 기능이라 생각한다. 이제 ‘효행장려 및 지원에 관한 법률’ 2007년 나와서 효교육을 전국적으로 실시하고 있지만, 아직도 우리의 수리인 국악을 통한 효교육 이야기는 들리지 않는다. 2014년 ‘인성교육 진흥법’이 나왔지만 역시 인성교육용 자료로 국악을 활용한다는 말도 들을 수 없다. 하지만 『예기』「악기」를 비롯한 동양의 여러 경전에서는 음악이 인성함양에 얼마나 중요한가를 말하고 있다. 이를 근거로 우리는 좀 더 우리의 음악을 어떻게 인성교육 현장에서 활용할 수 있을까를 고민해야 할 것이다. 더군다나 ‘효행장려 및 지원에 관한 법률’에는 효문화를 정의하면서 우리의 국악을 집어넣고 있지 않았는가? 적극적으로 국악을 통한 효교육과 인성교육 진흥방안을 모색할 때라고 생각한다.
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