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김광태,Kim, Kwang-Tae 한국천문학회 2013 天文學論叢 Vol.28 No.2
Chumsungdae is an ancient astronomical observatory whose main role was doing 'chunmoon'. It was administrate by a royal advisory agency on state affairs. The observers observed the heaven on the observatory platform, recorded peculiar events, and watched and interpreted the signs displayed in the heaven. Chumsungdae is an stonemasonry which represents almanac principles with its peculiar shapes and the numbers of strata and stones. The numbers were thoroughly invented to match exactly the almanac constants. Chumsungdae is comprised largely of three main parts, namely the square base, the stratified cylindrical body, and the top #-shaped stonework, and the total number of stones is 404. The number of the strata (27) and the height of the cylindrical body (27 尺) stand for the days in a sidereal month (27.3 days), which implies that the motion of the Moon with respect to the stars was given more priority than to the Sun at that time of geocentricism. And the cylindrical body was thoroughly designed to consist of 365 stones, which is of course the number of days in a solar year. In addition, there are 12 strata each under and above the south entrance and this in sum makes the 24 divisions of the year. Also there is 182 stones below the 13th stratum and this represents the number of days in the winter ~ summer solstice period, and the rest 183 stones the vice versa. The #-shaped top stonework was aligned in such a way that one of the diagonals points the direction of sunrise on the winter solstice. The square base also layed with the same manner. The south entrance was built 16 degrees SE, and the upright direction of the right pillar stone coincides with the meridian circle. This was a kind of built-in standard meridian circle facilitating the observations. In a symbolic sense, Chumsungdae was thought as the tunnel reaching the heaven, where the observers wished to be enlightened with the signs and inspirations in need. With the craftsmanship and skill, the builder reinforced the stratified cylindrical body with two sets of #-shaped beam stones, piercing at a right angle at 19th ~ 20th and 25th ~ 26th strata. Likewise, by placing the double #-shaped stonework with 8 beam stones on the platform of the observatory, both the stability of the stonemasonry and a guard rail for the nightly observers were securely provided.
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라스코 동굴 황소전당 벽화의 천문학적 연대측정 시도 II
김광태 ( Kwang-tae Kim ),김영식 ( Youngsik Kim ) 충남대학교 기초과학연구소 2016 忠南科學硏究誌 Vol.33 No.1
A new attempt employing proper motions of stars is made to dating the pictures on the wall of the hall of bulls in the Lascaux cave. Models that find the best fits, which largely strive to match the characteristics of the pictures to the model constellations, may thus provide us with a good ‘clock’, a well defined separation between an old and new position of which can a star travel with a known speed. Applying this method to the auroch # 13, the date is estimated between 12,400~21,000 yr B.P.
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다중 복합문화센터에서 소방시설의 적정 유지관리에 관한 연구
김광태(Kim, Kwang-Tae),김선형(Kim, Sun-Hyung) 한국화재소방학회 2012 한국화재소방학회 학술대회 논문집 Vol.2012 No.춘계
본 연구는 다중이 이용하는 복합문화센터에서 피난설비 및 피난동선의 적합성 여부와 소방시설의 적정 유지관리방법에 관하여 연구하였다. 다중이 이용하는 복합문화센터와 같은 시설에서 화재나 비상시에 피난기구 및 피난동선의 적정성 여부와 소화설비의 적정한 설치 및 유지관리 실태를 파악하고자 하였고, 조사 결과 피난기구 및 피난동선의 구조적 문제 때문에 화재가 발생하면 많은 사람이 일시에 몰려들 경우 노약자와 어린이는 부상의 위험성이 높았고, 소방시설의 유지관리 시스템은 소방안전관리자의 전문성과 적정 유지관리시스템이 확보되지 않았으며 지하층에서 지상으로 완전 피난에 여러 가지 문제가 있었다.
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재생골재 활용 철근콘크리트포장 내 철근의 부착특성에 대한 연구
김낙석,김광태,전찬기,전중규,Kim, Nak-Seok,Kim, Kwang-Tae,Jeon, Chan-Ki,Jeon, Joong-Kyu 한국방재학회 2005 한국방재학회논문집 Vol.5 No.1
Amount of demolished concretes is highly produced as dismantlement of structures to increased owing to usage alteration and deteriorated of concrete structures, but most of them have been used as material for simple reclamation. Therefore, if demolished concrete could be recycled as aggregate for concrete. it will contribute to solve the exhaustion of nature aggregate, in terms of saving resources and protecting environment, especially being want of resources in Korea. In this study it was investigated into experimental results that were carried out demolished concrete recycled aggregate gained from dismantled real structures and source concrete recycled aggregate produced according to respectively 5 steps of replacement ratio for recycling as pavement concrete aggregate.
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김광태 ( Kwang-tae Kim ) 충남대학교 기초과학연구원 2018 충남과학연구지 Vol.35 No.1
Among many archaeoastronomical remains, table stones with engraved cup marks are found in various forms in Korea. These holes are of varying sizes, some are small enough to hold fingers, and some are big enough to be cups. Constellations have evolved from ancient times into a national instrument of government, which is often called as “觀象授時”, as a reliable means of deciphering astrological meaning of the appearance of the array of Sun, Moon, and stars. In particular, the constellation has developed into a status board that reflects the state of the country, an essential tool of astrology. Some special constellations of these were worshiped as guardians of tribes, and also were used as a liturgical tool for praying for the permanent protection and security of the dead. The Big Dipper (北斗) or the Seven stars (七星) is the most characteristic and most often found among the constellations of cup marks, and this is well explained by the understanding of the ethnic tradition in that the Seven star religion (七星信仰) had been developed as the foundation of our ancestor folk religion.
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