• 제목/요약/키워드: Carpenter

검색결과 83건 처리시간 0.047초

한국산 돌기발갯고사리류(극피동물문, 바다나리강, 바다나리목)의 2미기록종 (Two New Records of Colobometridae (Echinodermata, Crinoidea, Comantulida) in Korea)

  • Shin, Sook
    • Animal Systematics, Evolution and Diversity
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    • 제18권1호
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    • pp.157-163
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    • 2002
  • 제주도의 하조대에서 채집된 갯고사리류를 동정 분류한 결과, 바다나리목(Comantulida), 돌기발갯고사리과(Colobometridae)의 줄무늬갯고사리, Cyllometri manca (Carpenter, 1888)와 범얼룩갯고사리, Decametra tigrina(A. H. Clark, 1907)가 한국 미기록종으로 밝혀져 보고한다. 그리고 돌기발갯고사리과는 우리나라에서 처음으로 보고된다.

First Record of Deshayesiella curvata (Polyplacophora: Protochitonidae) from Korea

  • Shin, Youngheon;Lee, Yucheol;Park, Joong-Ki
    • Animal Systematics, Evolution and Diversity
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    • 제34권4호
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    • pp.215-219
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    • 2018
  • Protochitonidae Ashby, 1925 is a family of small to medium sized chitons that includes a single fossil genus and two extant genera. Of the two extant genera, Deshayesiella Carpenter in Dall, 1879 contains 5 described species. Although most Deshayesiella species are known to be found in deep sea habitats(over 100 m), D. curvata (Carpenter in Pilsbry, 1892) is found from shallow waters(1-20 m). In this study, we provide details of microstructure of shell and radula characters using scanning electron microscopy and morphological features of D. curvata, and its partial sequence of mitochondrial DNA cox1 gene as DNA barcode sequence. In addition, we compare morphological differences of D. curvata from other congeneric species.

SPECTRAL METHODS AND HERMITE INTERPOLATION ON ARBITRARY GRIDS

  • Jung, H.S.;Ha, Y.S.
    • Journal of applied mathematics & informatics
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    • 제27권3_4호
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    • pp.963-980
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    • 2009
  • In this paper, spectral scheme based on Hermite interpolation for solving partial differential equations is presented. The idea of this Hermite spectral method comes from the spectral method on arbitrary grids of Carpenter and Gottlieb [J. Comput. Phys. 129(1996) 74-86] using the Lagrange interpolation.

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17~19세기 김룡사의 불사(佛事) 관련 기록물 현황과 영건(營建)활동 (A Study on the Architectural Document and Constructions of Gimlyong-sa(金龍寺) in 17~19th Century)

  • 도윤수;한동수
    • 건축역사연구
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    • 제22권5호
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    • pp.7-22
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    • 2013
  • Gimlyong-sa temple has played an important role of Buddhist culture in Gyeongsangdo Provinces(嶺南地域) in the late Joseon Dynasty as the 31st head temple(本山) in the Japanese occupation. There are lots of architectural documentary records remained nevertheless, most of cultural heritages are destroyed by fire in 1997. There were 85 articles in five kinds of books which contained historical achievements of Gimlyong-sa temple and hermitages(Daeseongam(大成庵), Hwajangam(華藏庵), Yangjinam(養眞庵), Geum seondae(金仙臺), Dosoram(兜率庵), Myeongjeogam(明寂庵)). It is possible to understand the five situational peculiarities in the 17~19th century. At the first, they were compiled in 1914 to around 1930 by Kwon Sangro(權相老) to clarify the historical facts. Second, confirmed the formation process of the foundation narrative. Third, the meaning of Seolseondang(設禪堂), Manseru(萬歲樓) and Hyangnojeon(香爐殿) were recorded, it is possible to look at the concept of people at that time. Fourth, the great masters portraits were enshrined in hermitages, not in Gimlyong-sa temple. It means that a hermitage is not for only self-discipline or living but assembly of religious orders(門派). Fifth, Chimgye(枕溪), the great Buddhist clergy and carpenter of Gimlyong-sa, was nationwide active worker in 19th century because he was also in a charge of investment manager for construction.

착저식 인공어초에 작용하는 파력특성에 관한 연구 (A Study on the Characteristics of Wave Forces on Artificial Reefs)

  • 류청로;김현주
    • 한국수산과학회지
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    • 제27권5호
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    • pp.605-612
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    • 1994
  • The methods to determine the hydrodynamic coefficients for the fixed type artificial reefs which were constructed to control ecological system in coastal waters are compared and discussed by model test results. To calculate the wave forces, least square method show good agreement with the experimental results and more stability than maximum force component method or Fourier decomposition method. This modified least square method of weighting the square of measured force turned out to be the most feasible method for maximum force. Using the feasible method, hydrodynamic characteristics for artificial reefs on uniform slopes offshore and breaking zone were studied. They were properly related to Keulegan-Carpenter's number and found larger than previous results. Wave force coefficients for artificial reefs around breaking zone were distributed from 1.5 to 2.5, and the mean value was 2.0. Drag force components were more in evidence than inertia force in maximum force which is important parameter to evaluate stability for high-permeability structures. A formula for the calculation of the maximum force for artificial reefs design is proposed, using structural dimension, water particle velocity and Keulegan-Carpenter's number.

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진동하는 원형주상체 주위의 유동에 관한 PIV를 이용한 실험적 연구 (Experimental Investigation of the flow around an Oscillating Circular Cylinder by Using a PIV System)

  • 송무석;이상대
    • 한국해양환경ㆍ에너지학회지
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    • 제6권1호
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    • pp.60-67
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    • 2003
  • 원형주상체가 진동하는 경우 Keulegen-Carpenter수를 10에서 30까지 변화시키며 이 때에 유기되는 유체력을 계측하고 전유동계측시스템을 (Particle Image Velocimetry) 개발하여 연관된 유동장을 분석하였다. 개발된 PIV 시스템은 고속 유동장 이미지를 홀수와 짝수의 주사선 이미지로 분리하는 방식을 시도하여 하나의 이미지로부터 속도추정이 가능하도록 하였다. KC수에 따른 실린더 주위의 유동을 "traverse street", "single pairing" 그리고 "double pairing"으로 관찰하였고 각 경우 박리되는 보오텍스의 형태에 따라 미세한 항력과 양력의 변화를 수반하는데 이들의 관계를 위상차와 보오텍스 박리의 형태 변화로 설명하였다.

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의궤에 기록된 건축도(建築圖) 물매(勿每, 水每)에 관한 연구 - 단면도로서의 가능성을 중심으로 - (A Study on the Mulmae, Architectural Drawing Recorded on Uigwes - Focusing on the Possibility as a Cross-sectional Drawing -)

  • 이상명
    • 건축역사연구
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    • 제29권6호
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    • pp.57-65
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    • 2020
  • This study covered the Mulmae, architectural drawing recorded on Yeonggeon-uigwes and Sanleung-uigwes during the late Joseon Dynasty. In uigwes, the term 'Mulmae' was used as a mixture until the 17th century, but from the 18th century, the term 'Mulmae(勿乙每, 勿每, 水每)' was unified into 'Mulmae(水每)'. The paper of the Mulmae was made to be used during the construction period by using a thick oil paper called Yudun. Four Yudun were connected, and its size was 197.4×141cm, which was rather large. The Yingzaofashi(營造法式) of Song Dynasty describes how to draw a longitudinal section on a scale of 1/10. The scale of 1/10 was the maximum when comparing the size of the Mulmae with the buildings in uigwes. A sectional drawing of Gongpo in Geunjeongjeon was drawn on a scale of 1/10. There is a testimony that a senior carpenter drew a cross-section on a scale of 1/10. Therefore, it was determined that the scale of the longitudinal section drawn on the Mulmae paper was 1/10. The term 'the Mulmae' was used equally by carpenter active in Japanese colonial era. The scope of the painting was clarified from pillar to rafter. Uigwes records that the Mulmae was made for wood processing. Through this, it can be understood that the Mulmae painted the entire structure as a longitudinal section.

진동하는 원주 주위의 유체 유동에 관한 연구 (A Study on the Fluid Flow Around an Oscillating Circular Cylinder)

  • 서용권;문종춘
    • 한국해양공학회지
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    • 제4권2호
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    • pp.73-84
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    • 1990
  • A circular cylinder is oscillated in th otherwise quiescent viscous fluid. Numerical analysis performed for this problem by using the fourth-order Runge-kutta method for the unsteady Navier-stokes equations. For K(Kelegan-Carpenter's No.)=5, the flow developed symmetrically, while for K=10, it revealed random patterns. The coefficient of the rms force is overestimated by 20-30% compared with the experimental result.

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