• 한국가구학회지
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• 제23권3호
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• pp.242-251
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• 2012

Geomancy accepts with a pre-requisite that human beings adapt themselves to nature as an organism, because people and environment, bodies and space have the homogeneity which can not be divided by a dichotomy. The homogeneity as a structure alive implies a deep relationship with biorhythm and the change of space, and is regarded as a concept and role significant on the coordination. In other words, applying the element in the geomancy could be interpreted as a work giving a new meaning and spirit on a creation of space and furniture coordination. Harmony and balance shown in design concepts have a relationship with the meaning on Yin-Yang and the Five Elements theory. In addition, the characteristic in each element is suggested as an example applying the concept of geomancy through furniture coordination for each space in the chapter 4.

• Structural Engineering and Mechanics
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• 제60권3호
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• pp.387-404
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• 2016

In this paper, the response and failure of sharp-notched 6061-T6 aluminum alloy circular tubes with five different notch depths of 0.4, 0.8, 1.2, 1.6 and 2.0 mm subjected to cyclic bending were experimentally and theoretically investigated. The experimental moment-curvature relationship exhibits an almost steady loop from the beginning of the first cycle. And, the notch depth has almost no influence on its relationship. However, the ovalization-curvature relationship exhibits a symmetrical, increasing, and ratcheting behavior as the number of cycles increases. In addition, a higher notch depth of a tube leads to a more severe unsymmetrical trend of the ovalization-curvature relationship. Focusing on the aforementioned relationships, the finite element software ANSYS was used to continue the related theoretical simulation. Furthermore, the five groups of tubes tested have different notch depths, from which five unparallel straight lines can be observed from the relationship between the controlled curvature and the number of cycles required to produce failure in the log-log scale. Finally, a failure model was proposed to simulate the aforementioned relationship. Through comparison with the experimental data, the proposed model can properly simulate the experimental data.

• Journal of Electrical Engineering and Technology
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• 제9권1호
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• pp.162-169
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• 2014

The analysis and comparation of the half-coiled short-pitch windings with different phase belt are presented in the paper. The half-coiled short-pitch windings can supply the odd and even harmonics simultaneously, which can be applied in multiphase bearingless motor (MBLM). The space harmonic distribution of the half-coiled short-pitch windings with two kinds of phase belt is studied wi th respect to different coil pitch, and the suitable coil pitch can be selected from the analysis results to reduce the additional radial force and torque pulse. The two kinds of half-coiled short-pitch windings are applied to the five- and six-phase bearingless motor, and the comparation from the Finite Element Method (FEM) results shows that the winding with $2{\pi}/m$ phase belt is fit for the five phase bearingless motor and the winding with ${\pi}/m$ phase belt is suitable for the six phase bearingless motor. Finally, a five phase surface-mounted permanent magnet (PM) bearingless motor is built and the experimental results are presented to verify the validity and feasibility of the analysis. The results presented in this paper will give useful guidelines for design optimization of the MBLM.

• Structural Engineering and Mechanics
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• 제22권4호
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• pp.483-510
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• 2006

The dynamic instability characteristics of laminated composite stiffened shell panels subjected to in-plane harmonic edge loading are investigated in this paper. The eight-noded isoparametric degenerated shell element and a compatible three-noded curved beam element are used to model the shell panels and the stiffeners respectively. As the usual formulation of degenerated beam element is found to overestimate the torsional rigidity, an attempt has been made to reformulate it in an efficient manner. Moreover the new formulation for the beam element requires five degrees of freedom per node as that of shell element. The method of Hill's infinite determinant is applied to analyze the dynamic instability regions. Numerical results are presented to demonstrate the effects of various parameters like shell geometry, lamination scheme, stiffening scheme, static and dynamic load factors and boundary conditions, on the dynamic instability behaviour of laminated composite stiffened panels subjected to in-plane harmonic loads along the boundaries. The results of free vibration and buckling of the laminated composite stiffened curved panels are also presented.

• 대한치과보철학회지
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• 제44권5호
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• pp.584-593
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• 2006

Statement of problem : Dental implant which has been developed gradually through many experiments and clinical applications is presently used to various dental prosthetic treatments. To conduct a successful function of implant prosthesis in oral cavity for a long time, it is important that not only structure materials must have the biocompatibility, but also the prosthesis must be designed for the stress, which is occurred in occlusion, to scatter adequately of load support. Therefore, it is essential to give the consideration about the stress analysis of supporting tissues for higher successful rates. Purpose : Recently, many implant manufacturing company produce various taper design of root form implant, the fixture is often selected. However, the stress analysis of taper form fixture still requires more studies. Material and method : This study we make the element models that five implant fixture; Branemark system(Nobel Biocare, Gothenberg, Sweden), Camlog system(Altatec, Germany), Astra system(Astra Tech, Sweden), 3i system(Implant Innovations Inc, USA), Avana system(Osstem, Korea) were placed in the area of mandibular first premolar and prosthesis fabricated, which we compared with stress distribution using the three-dimension finite element analysis under two loading condition. Results : This study compares the aspect of stress distribution of each system with the standard of Von mises stress, among many resulted from finite element analysis so that this research gets the following results. 1. In all implant system, oblique loading of maximum Von mises stress of implant, alveolar bone and crown is higher than vertical loading of those. 2. Regardless of loading conditions and type of system, cortical bone which contacts with implant fixture top area has high stress, and cancellous bone has a little stress. under the vertical loading, maximum Von mises stress is more higher in order of Branemark, Camlog, Astra, 3i, Avana. under the horizontal loading, maximum Von mises is more higher in order of Camlog, Branemark, Astra, 3i, Avana.

• 한국전자파학회논문지
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• 제25권6호
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• pp.628-636
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• 2014

본 논문은 재밍 대응 위성 항법 장치의 5소자 평면 배열 안테나 설계에 대해 기술한다. GPS $L_1/L_2$ 대역에서 공진하는 적층 구조의 패치 안테나 설계를 제안한다. 제안된 안테나는 광대역 및 원형 편파 특성을 구현하기 위해 칩 커플러를 이용한 이중 급전을 사용한다. 배열안테나 측정 결과, 중앙안테나의 전면 방향 이득은 $L_1$과 $L_2$ 대역에서 각각 1.10 dBic, 0.37 dBic, 측면안테나는 $L_1$과 $L_2$ 대역에서 0.99 dBic, -0.57 dBic를 갖는다. 고각 $30^{\circ}$에서 방위각의 이득은 중앙안테나 $L_1$과 $L_2$ 대역에서 평균 -2.08 dBic, -5.33 dBic의 측정 결과를 갖는다. 측면안테나는 $L_1$과 $L_2$ 대역에서 평균 -0.40 dBic, -2.09 dBic의 측정 결과를 갖는다. 제안된 5소자 평면 배열 안테나는 GPS 재밍 대응 장치에 적합함을 확인한다.

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제32권4호
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• pp.477-493
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• 2018

교과서 저자들은 여러 나라의 교과서 및 교수 학습 자료들을 참고하여 2015 개정 교육과정에서 강조하고 있는 역량들을 담아내고자 하였다. 문제해결, 추론, 의사소통 역량은 2009 개정 교육과정에서 수학적 과정 요소로 이미 강조되어 왔으며, 정보 처리 역량의 경우에는 이전 교육과정부터 계산기와 컴퓨터 사용이 교수 학습 방법 부문에 명시되어 있다(교육부, 2009). 또, 태도 및 실천은 다른 역량과 달리 정의적 영역의 특성을 갖는바, 문제 해결 과정에서 이 역량을 판단하는 것은 쉽지 않다. 그렇다면, 2015 개정 교육과정에 좀 더 관심을 기울이고 새롭게 반영해야 할 역량으로 창의 융합을 들 수 있다. 한편, 2015 개정 수학과 교육과정의 중학교 1학년에 '다양한 상황을 그래프로 나타내고, 주어진 그래프를 해석할 수 있다'는 성취기준이 도입되었다. 교과서마다 주어지는 문제 상황도 다양할 것이고 주어지는 그래프의 유형도 다를 것이다. 본 연구에서는 총 10종의 중학교 1학년 수학 교과서의 그래프 단원을 대상으로 수학 교과서에서의 창의 융합 역량 요소의 반영 현황을 살펴보고자 하였으며, 이를 위하여 선행 연구를 토대로 창의 융합 역량의 하위 요소로 생산적 사고, 독창적 사고, 여러 가지 방법으로 해결, 수학 내적 연결, 수학 외적 연결의 5가지 요소를 선정하여 적용하였다.

• 한국실내디자인학회논문집
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• 제14권2호
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• pp.63-71
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• 2005

The dome structure has been treated in two layers among the techniques that have formed the space in Baroque architecture and the light used to be manipulated to create the openness of space and the fantasy of atmosphere. Such an expression technique has influenced on the expression of space in the architecture of New York Five in the 1960s to 1970s and the concept of multiple space embellished with various layers has appeared in the architectural concept of New York Five; meanwhile, the common meaning with the technique of double layers and the ways of phenomenal expressions that have recognized the existence of space in the Baroque period has been achieved through the light, immaterial organism. It means that the existing concept of light limited simply to the plane elements of brightness and darkness has been treated as a formative element that has defined and adjusted the visual expansion and reduction of the space Itself and special existence and has been used as an element of the media of spatial structure. In addition, these elements have been treated as another solution for the emotional aspects of space. Therefore, this study compares the plastic and formative meaning of the Baroque architecture with that of New York Five in terms of the relation between space and light and examines them; in doing so, it will give a clue to understand various and new space expression techniques to many architects and space designers who have led modern architecture.

• 한국실내디자인학회논문집
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• 제26권6호
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• pp.116-125
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• 2017

The study is aimed to analyze cases of hotel room designs based on the 'Art Quotient'. It is focused on design elements of livability, analyzing the space design in terms of biophilic design and experiential marketing. This paper proposes a direction for hotel design based on the analysis result. The scope of the study includes the cases of 17 hotels in the area of Seoul achieving five stars in Korea. This paper presents an analysis whether the room space of hotels provide a user-oriented life experience from the perspective of biophilic design and experiential marketing. In this study, we focused on the concept of 'refuge', one of the biophilic design elements that express the value of life sense, and the element of 'sense', one of the strategic experiential modules of experiential marketing. After analyzing the hotel case studies, the space was evaluated using five factors of art quotient as a design method to provide a life experience in the hotel room. Analysis of the design space from the viewpoint of refuge, rather than architectural elements, proved that decorative elements appeared most commonly in all hotel rooms. Further, through an analysis based on the measures of 'sense', an experiential element, visual elements were mostly enforced in among the elements of the five senses. In other words, when designing a hotel room space, visual elements such as color, pattern, furniture, lighting and style are mainly utilized. Examining the analysis of the design elements from the point of view of the art quotient, the rooms of all the hotel's suite types include elements of 'communication'. Most of the hotel rooms focused on stimulating the aesthetic sensibility of customers. This resulted in the elements of 'immersion' showing poor results. In conclusion, it is necessary to provide the five senses of the arts index in a balanced manner to provide a life experience through the five senses.

• 감성과학
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• 제6권2호
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• pp.29-35
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• 2003

동양의학에서는 사람의 체질의 허와 실에 따라 적절한 처방을 한다. 즉, 사람의 체질을 목, 화, 토, 금, 수의 오행으로 구분하고 그 체질에 따라 강하고 약한 장부를 서로 균형이 되도록 하는 것이다. 예컨대 그 처방의 하나인 향기요법도 나약한 신체부위를 보강해 주는 향을 사용하여 치료를 하고 있다. 그러나 이러한 오행요법은 실제 임상에서는 많은 효과를 보고 있지만 과학적 근거보다는 통계적 및 주관적 요소가 강한 면이 있기 때문에 이에 대한 보다 체계적인 연구가 절실히 요구되고 있다. 본 연구에서는 이러한 음양오행의 특성을 감안, 폐의 기능이 강한 금형과 반대로 나약한 화형을 대상으로 하여 일단 쓴맛이 나는 라벤더(lavender)향을 자극, 뇌파의 반응정도를 파악해 봄으로써 향과 체질간의 상관관계를 분석하고 나아가 오행요법의 적용가능성을 알아보았다. 그 결과 라벤더 향은 화형인 사람에게는 강한 장부인 담을 편안하게 하여주고 금형인 사람에게는 약한 간과 강한 담을 서로 균형을 맞추도록 하여 간담을 안정시키는 효과가 있음을 보여주었다. 이는 그 동안 동양의학(한의학)에서 말하는 오행처방과도 일치하는 결과라 하겠다.