• 한국실내디자인학회논문집
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• 제15권6호
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• pp.120-130
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• 2006

This study is about objectified spatial composition. The Interior Design field has grown and established its major trends dependent upon other related field of study. With this perspective in mind, esthetics on Interior Design has to be treated in similar manner. In modem architects or fine artists have defined the terminology 'objectification' theoretical principle where by unable to distinguish between 'object's type' and 'objects', Presently, the term 'objectified' became a trend word. In order to confront misconception of the idea of 'objectification', some people define as reflection of this complex society. There are five types in expression of objectified spatial composition in Interior Design. Which are free form spatial composition through artistry of artists, fantastic spatial composition by polysemous collision, symbolic spatial composition from the metaphorical of form, aggregate spatial composition by geometric collision and geometric superimposition, and cultural spatial composition. Therefore, this study aims to help understanding of tendency in various space expressions in Interior Design through searching how to express type of objectified spatial composition in Interior Design from 2000 through 2005.

• ETRI Journal
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• 제31권2호
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• pp.225-227
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• 2009

A new planar metamaterial (MTM) with simultaneous negative values of permittivity (${\varepsilon}$) and permeability (${\mu}$) is proposed. Our MTM is composed of two identical copper patterns etched on both sides of dielectric laminate, which is very thin and easy to fabricate. Unlike conventional MTMs, the proposed structure shows a negative refractive index (NRI) behavior with respect to a normally incident wave. To explain the underlying principle of the NRI characteristics, an equivalent resonant circuit model based on surface current density distribution is investigated. An eigenmode analysis and a three-dimensional wave simulation for the stacked MTM prism are also performed to verify the existence of negative refraction. The experimental results from the transmission and reflection measurement ensure the validity of our design approach and show good agreement with the theoretically predicted effective medium parameters.

• 대한전자공학회논문지
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• 제27권11호
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• pp.20-24
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• 1990

본 논문에서는 유전체 판상의 스트립 회절격자에 의한 TE 평면파의 산란문제에 관한 효율적인 수렴해를 제시하였다. 본 논문의 방법은 등가 원리에 따라서 단락된 슬롯 위에 놓여진 등가 자계 전류를 적절한 모서리 조건을 만족하는 Chebyshev 다항식의 급수로서 전개하는데 기초를 둔다. 본 논문의 정확도와 수렴 속도를 입증하기 위해 반사 계수와 투과 계수에 대한 수치적인 결과를 계산하여 다른 결과와 비교하였다.

• Journal of the Korean Institute of Landscape Architecture International Edition
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• 제2호
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• pp.45-50
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• 2004

Confronting with series of environmental problems. caused by urbanization and the constantly improving consciousness of the entire society towards environmental protection, it has become an inevitable trend to develop parks and green space planning that guided by the principle of 'respecting nature, preferring ecology' and integrate function, arts and culture of landscape design. Aiming at specific project, humanized design should be laid stress on. With fundamental functional construction serving as the base, the reflection of cultural content and regional landscape as the characters, using various landscape gardening elements reasonably to enrich space design as well as highlighting leisure and sport function and following the concept 'human-centered', parks and green space filled with natural vitality and cultural spirit can be constructed, people, city and the nature could develop together in harmony.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 2003년도 춘계학술대회 논문집
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• pp.117-123
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• 2003

This paper deals with pressure ripple and noise reduction characteristics for a hydrostatic transmission(HST) consisting of a variable axial piston pump connected in an open loop to a fixed displacement axial piston motor. Pressure ripples in HST is major source of vibration, which can lead to fatigue failure of components and cause noise. In order to reduce the pressure ripple, an annular tube type hydraulic filter proposes to absorb pressure ripples with the high frequencies components to achieve better noise attenuation in HST. The basic principle tube is applied to propagation of pressure wave, reflection, absorption in cross section of discontinuity and resonance in the hydraulic pipeline. It is experimently confirmed that a hydraulic filter is absorbed to be about 30∼40dB of pressure ripple with high frequencies. These results will assist in modeling and design of noise reduction in hydraulic control systems, and here, should provide a means of designing a quieter HST.

• Asian Journal of Business Environment
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• 제13권4호
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• pp.1-6
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• 2023

Purpose: To explore the application prospect of support vector machine (SVM) in supply chain management and its practical application in supply chain performance evaluation practice. Research design, data and methodology: This paper establishes the performance evaluation index system of supply chain management according to the balanced scorecard (BSC) theory, and establishes the SVM model of supply chain management performance evaluation based on the SVM principle. Results: The performance evaluation results of the supply chain of an electric power equipment Co., Ltd. in Harbin established by using the model are consistent with the actual situation, which indicates the nature and accuracy of the possible reflection of the established supply chain performance evaluation model. Conclusions: The results show that SVM model can be used to evaluate enterprise supply chain management performance indicators, and can improve enterprise supply chain management performance, thus demonstrating the effectiveness of the model.

• KDI Journal of Economic Policy
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• 제34권3호
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• pp.1-29
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• 2012

본 연구에서는 혁신도시지역과 그 주변지역의 지가 데이터를 바탕으로 혁신도시사업에 따라 토지가격이 어느 시점부터 어느 정도 변동했는지 살펴보았고, 이를 통해 현행 제도가 개발이익의 배제원칙에 잘 부합하지 않음을 밝히는 한편, 현행 제도를 개발이익의 배제원칙에 보다 부합하도록 개선하기 위한 방안들을 모색하였다. 우선 혁신도시지역과 그 주변지역의 지가 데이터를 분석해 보면, 대부분의 혁신도시지역의 지가가 2005년부터 그 주변지역들에 비해 통계적으로 유의하게 상승하기 시작하였음을 알 수 있다. 즉, 이 시기부터 혁신도시사업과 관련한 정보가 지가에 반영되기 시작하였다고 볼 수 있는데, 이와 같이 혁신도시사업 관련 정보가 반영된 지가를 바탕으로 실제 보상액을 산정하면 개발이익의 배제원칙과는 괴리가 생기게 된다. 그러나 토지보상법 제70조에 따른 보상액 산정의 기준지가는 2007년 1월 1일 공시된 공시지가이며, 또한 실제로도 이러한 기준을 적용하여 보상이 진행되었다. 즉, 2005년부터 2006년 말까지 개발 정보가 해당 혁신도시 지가에 반영되었음에도 불구하고 이를 배제하기 위한 제도적 장치 및 노력 없이 보상이 진행되었다. 이러한 문제들을 해결하기 위해 본 연구에서는 크게 두 가지 방안을 제안하고 있다. 첫째, 토지보상법 제70조 제5항에서 소급적용할 수 있는 공시지가의 한계를 두지 말고, 대신 개발이익이 반영되지 않았다고 판단되는 가장 최근의 공시지가를 기준시가로 적용하도록 변경하는 것이 필요하다고 판단된다. 이렇게 정해진 기준시가를 바탕으로 가격인정시점까지의 통상적인 평균 물가상승률, 평균 지가상승률 등을 바탕으로 보상액을 보정한다면 개발이익 배제의 원칙에 보다 부합할 것이다. 둘째, 개발이익이 지가에 반영되었다고 판단하는 기준을 하위 법령에 명시적으로 포함시킬 필요가 있다. 현행 제도하에서는 수용보상액 산정 시 개발이익 반영 여부에 대한 평가자의 자의적인 해석이 포함될 가능성이 크다. 따라서 본 연구에서의 학술적 연구 결과와 현행 토지보상평가지침(감정평가협회) 등의 기준 등을 참고하여 개발이익 반영 여부를 판단하는 기준을 개선할 필요가 있다.

• Spatial Information Research
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• 제21권1호
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• pp.45-52
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• 2013

최근 도심기반 지하시설물 정보에 대한 체계적인 관리를 위해 현장시공 시 되메우기 전에 시설물에 대한 3차원 측량을 권장하고 있다. 시설물에 대한 정확한 위치측정 요구 증가와 함께 보다 신속하고 정확하게 각종 지하시설물의 DB 구축을 위해서는 타깃을 포함한 측량방법의 간소화로 비용의 절감 및 데이터 구축의 일관성을 유지할 필요성이 있다. 본 연구에서는 지하시설물 DB 구축을 위한 시설물 위치측정 방법으로 현재 측량에 이용되는 광학프리즘의 재귀반사 원리를 이용하여 최적의 반사체 타깃을 제작(삼각형, 사각형 및 반구형)하여 현장에서 측량자에 의해 되메우기 전에 위치측정을 수행할 수 있는 새로운 유형의 측량타깃을 개발하는데 목적이 있다. 새로운 측량타깃은 지하시설물 측량이 가능하고 데이터의 신뢰성 및 정확도 확보를 위해 유형별로 토털스테이션 측량좌표와의 정량적 비교를 통하여 위치 측정의 정확도를 비교하여 보았다. 연구결과 시설물 위치측정을 위한 반사체 타깃의 유용성을 입증 하였으며 새로운 타깃의 사용으로 보다 신속하고 정확하게 측량자에 의해 지하시설물 DB 구축을 위한 3차원 위치를 획득할 수 있는 기반을 마련하였다.

• 한국생산제조학회지
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• 제9권1호
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• pp.88-95
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• 2000

In this paper, an expansion-resonator type pulsation attenuator is proposed to absorb and attenuate flow an pressure ripple with high frequencies generated from hydraulic control systems. The basic principle of a pulsation attenuator proposed here is applied to propagation, reflection, absorption of pressure waves at the cross section of discontinuity and resonance in the pipeline. It has advantage of the compact size and high degree fo freedom for installation in hydraulic systems. The design scheme based on distributed parameter pipeline system with dissipative viscous compressible model is developed. To investigate the reduction of flow and pressure ripple with high frequencies produced by swash plate type axial piston pump, two kinds of attenuators are manufactured. It is experimently confirmed that the spectral intensity of flow and pressure ripple with high frequencies from the pump are reduced up to about 20$^{\circ}$~30dB by using attenuators proposed here. The calculated results were in good agreement with the measured values. From there sults of this study, it is shown that an expansion-resonator type pulsation attenuator is effective in a wide frequency ranges to attenuate the flow and pressure ripple from hydraulic components.

• 한국정밀공학회지
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• 제4권2호
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• pp.36-46
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• 1987

An optical technique using laser for non-contact measurement of surface roughness and form accuracy of ground surfaces is presented. It is found that, when a ground surface is illuminated by a beam of laser light, the roughness height and slope distribution has significant influence on the pattern of reflection and it maintains an unique Gaussian distribution relationship with the surface roughness. The principle idea of the optical measurement system is therefore monitor the radiation, and then calibrate it in process against surface roughness by means of necessary digital data processing. On the other hand, measuring the form accuracy of a ground surface is accomplished by using a triangular method, which is based on observing the movement of an image of a spot of light projected onto the surface. The image is focused, through a series of lenses for magnification, on a photodetector array lf line configur- ation. Then the relative movement of image and consequently the form accuracy of the surface can be obtained through appropriate calibration procedures. Experimental test showed that the optical roughness measurement technique suggested in this work is very efficient for most industrial applications being capable of monitoring the roughness heights ranging 0.1 to 0.6 .$\mu$m CLA values. And form accuracy can be measured in process with a resolution of 10 .$\mu$m.