• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 1998.11a
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• pp.127-130
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• 1998

이 연구에서는 부정류의 판상체 이중공극 프랙탈 모델과 입방체 이중공극 프랙탈 모델의 지하수위 거동을 비교 연구하였다. 균열내 지하수위 거동 해석은 판상 이중공극 프랙탈 모델은 Hmm과 Bidaux(1996)을 이용하였고 입방체 이중공극 프랙탈 모델의 경우에는 입방체블록과 같은 크기의 구상체 블록으로 간주하여 지하수위 거동을 해석하였다. 그리고 0.5, 1, 1.5, 2, 2.5, 3차원에 대해서 판상체 이중공극 프랙탈 모델과 입방체 이중공극 프랙탈 모델의 이론적인 수위강하 곡선을 작성하여 비교, 분석하였다. 부정류의 판상체 이중공극 프랙탈 모델과 입방체 이중공극 프랙탈 모델은 기반암내 균열의 분포가 프랙탈망을 형성하고, 균열과 매트릭스 블록이 거의 수평의 층상으로 발달하는 경우와 균열이 수평방향과 수직방향으로 발달하면서 매트릭스 블록이 입방체를 이루는 경우에 적용될 수 있다.

• Geotechnical Engineering
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• v.10 no.3
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• pp.41-54
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• 1994

This study aims at investigating the mechanism and operation of cubical triaxial test developed by Lade in order to obtain analysis on the clayey foundation deformation. A comparison on deviator stress, pore water pressure and stress path is made between test results of clay using the cubical consolidated undrained test as well as plane strain test.

• Korean Institute of Interior Design Journal
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• v.20 no.6
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• pp.145-152
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• 2011

Salvador Dali put a title of his work as 'A Propos of the Treatise on Cubic Form by Juan de Herrera' at 1960. Through this work which is consisted in cube frame surrounding black and white letter squares and nails in the sky, he directly referred about the cube which were showed in his pictures. To understand the meaning of this work, Dali's paintings and Juan de Herrera's design and architectural ideas are analysed by building. His concerning about absolute existence like god and nuclear takes the cubic form by Juan de Herrera instead of pictorial tendencies of Cubism, however pictorial elements such as sky and nails were still used in the work. He use alphabet letter as pattern consisting wall and symbol representing 'Juan de Herrera', moreover number '2' is taken to show up line attribute. Dali had several design develop process, and finally he reached an new stage called 'Hypercube'. Hypercube can distinguish from Cubism and Herrera's architectural idea, and it will be free from objective world based in Euclid geometry. Although cubic is the simplest shape. It can contain the variety of developments in these fields - philosophy, architecture, painting and etc.- from Platon to nuclear physics and coexists in a picture of Salvador Dali.

• Proceedings of the Korean Geotechical Society Conference
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• 1988.06b
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• pp.83-100
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• 1988

• Journal of the Korean Ceramic Society
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• v.12 no.4
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• pp.37-42
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• 1975

철(II)이온을 안정화 하기위하여, 2산화 규소와, 구상, 입방체상 및 침상의 서로 다른형태의 산화 제2철로부터 규산철을 합성하였다. 메타놀증기로 포화시킨 질소까스를 튜브로에 도입시켜 얻은 환원성 분위기속에서, 114$0^{\circ}C$에서 11$65^{\circ}C$의 온도범위에서, 가스유속을 0.13 및 0.25l/min. 로서, 환원시간 4-150분동안 교상반응을 진행하였다. 반응생성의 동태를 오르자트 가스분석으로 검토하였으며, 생성물의 확인은 X-선 회절시험 및 감량정량에 의하였으며, 결과는 다음과 같다. 1 : 1.1의 몰비로 혼합한 산화제2철과 2산화 규소의 경우, 가스유속이 0.13l/min일 때, 규산철 합성반응시간은 구상, 입방체상 및 침상산화철에 있어서 각기 8-27분, 10-16분 및 6-7분으로 구상의 경우가 범위가 가장 넓었다. 또한, 반응속도는 산화제2철의 표면적의 평방근에 비례하였고 반응시간의 평방근에 역비례하였다.

• Journal of Advanced Marine Engineering and Technology
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• v.30 no.3
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• pp.369-375
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• 2006

Large eddy simulation has been applied to simulate turbulent flow around a cubic obstacle mounted on a channel surface for a Reynolds number of 40000(based on the incoming bulk velocity and the obstacle height) using a Smagorinsky model and a Lagrangian dynamic model. In order to develop the LES to the practical engineering application, the effect of upwind scheme, turbulent sub-grid scale model were investigated. The computed velocities. turbulence quantifies, separation and reattachment length were evaluated by compared with the previous experimental results.

• Archives of design research
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• v.14 no.1
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• pp.47-52
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• 2001

A goal of this study is to explore the relationship between original shape and human emotion. To this end, a 3-way layout experiment is conducted, whose goal is to find the effect of polishness on the image of cubics. The analysis of the experiment result reveals some differences among the involved factors. This study may contribute to the development of a design system at design-related workplace.

• Proceedings of the Korean Powder Metallurgy Institute Conference
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• 2003.04a
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• pp.40-41
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• 2003

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.31 no.1
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• pp.41-48
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• 2013

The aim of the present study is to design a memory-efficient octree for querying large 3D point cloud. The aim has been fulfilled by omitting variables for minimum bounding hexahedral (MBH) of each octree node expressed in C++ language and by passing the re-estimated MBH from parent nodes to child nodes. More efficiency has been reported by two-fold processes of generating pseudo and regular trees to declare an array for all anticipated nodes, instead of using new operator to declare each child node. Experiments were conducted by constructing tree structures and querying neighbor points out of real point cloud composed of more than 18 million points. Compared with conventional methods using MBH information defined in each node, the suggested methods have proved themselves, in spite of existing trade-off between speed and memory efficiency, to be more memory-efficient than the comparative ones and to be practical alternatives applicable to large 3D point cloud.

• Journal of the Korea Concrete Institute
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• v.16 no.3 s.81
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• pp.375-382
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• 2004

The compressive strength of concrete is used as the most basic and important material Property when reinforced concrete structures are designed. It has become a problem to use this value, however, because the control specimen sizes and shapes are different from every country. In this study, the effect of specimen sizes and shapes on compressive strength of concrete specimens was experimentally investigated based on fracture mechanics. Experiments for the Mode I failure was carried out by using cylinder, cube, and prism specimens. The test results are curve fitted using least square method(LSM) to obtain the new parameters for the modified size effect law(MSEL). The analysis results show that the effect of specimen sizes and shapes on ultimate strength is apparent. In addition, correlations between compressive strengths with size, shape, and casting direction of the specimen are investigated. For cubes and prisms the effect of placing direction on the compressive strength was investigated.