• Title/Summary/Keyword: 해석적 연구

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Diffraction Analysis of Multi-layered Grating Structures using Rigorous Equivalent Transmission-Line Theory (정확한 등가 전송선로 이론을 사용한 다층 격자 구조의 회절특성 분석)

  • Ho, Kwang-Chun
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.15 no.1
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    • pp.261-267
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    • 2015

  • The eigenvalue problems involving the diffraction of waves by multi-layered grating configurations can be explained by rigorous modal expansion terms. Such a modal solution can be represented by equivalent transmission-line networks, which are generalized forms of simple conventional circuits. This approach brings considerable physical insight into the grating diffraction process of the fields everywhere. In particular, the transmission-line representation can serve as a template for computational algorithms that systematically evaluate dispersion properties, radiation effects and other optical characteristics that are not readily obtained by other methods. To illustrate the validity of the present rigorous approach, the previous research works are numerically confirmed and the results agree well each other.

  • https://doi.org/10.7236/JIIBC.2015.15.1.261 인용 PDF KSCI

A Study on the Utility of Statistical Power Balance Method for Efficient Electromagnetic Analysis of Large and Complex Structures (복잡한 대형 구조물의 효율적인 전자파 해석을 위한 통계적인 PWB 방법의 유용성에 관한 연구)

  • Lee, Young-Seung;Park, Seung-Keun
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.24 no.2
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    • pp.189-197
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    • 2013

  • With the trend of technological advances in electronic communications and the advent of ubiquitous environments, the density of existing electronic equipment in the surroundings is increasing significantly. It is hence great importance to study the numerically efficient and fast algorithm for complex and large environments to identify their electromagnetic compatibility and interference characteristics of equipments installed in those structure. This paper introduces a statistical-based power balance method(PWB) for the analysis of these problems and considers its practical utility. The 2-dimensional lossy rectangular cavity was numerically revisited to clarify its relationship with the classical deterministic analysis solutions based on the Maxwell's equation. It can be shown that the statistical assumptions and analysis results from the power balance method correspond to the volume average over the realistic deterministic domain. This statistical power balance approach should be a sufficiently practical alternative to the electromagnetic problem of complex and large environment since it is apparent that the full-wave analysis methods have some severe limits of its computational burdens under the situation of complex and large environment.

  • https://doi.org/10.5515/KJKIEES.2013.24.2.189 인용 PDF KSCI

Analytical Study on Buoyancy Preflexion Effects on Structural Performance of Concrete Floating Structure (부력 프리플랙션 효과가 콘크리트 부유구조체의 구조성능에 미치는 영향에 대한 해석적 연구)

  • Lee, Du-Ho;Jeong, Youn-Ju
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.32 no.2A
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    • pp.75-83
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    • 2012

  • In this study, an analytical studies were carried out for the buoyancy preflexion method to improve structural performance of concrete floating structures. The buoyancy preflexion means that the preflexion effects were induced to the floating structure due to the difference in buoyancy between the pontoon modules composing the floating structures. In order to verify the buoyancy preflexion effects, an analytical studies were carried out for the floating structures. The size and dimensions of FE model were determined through the structural design process. The parameter of this analytical study was length ratios of central module part, which induces buoyancy preflexion effects, to the total length. The analysis results were pre-compression on the bottom concrete slab and displacement of freeboard due to buoyancy preflexion effects. These results were processed according to the loading step, buoyancy preflexion loads on the bottom and live loads on the topside. Then, the buoyancy preflexion effects on structural performance was analyzed. As the results of this study, it was found that the buoyancy preflexion significantly influence on structural performance of floating structures. According to the length ratio, the buoyancy preflexion effects have a tendency of parabolic form and maximized at the length ratio of 40~60%. The buoyancy preflexion method is simple in principle and easy in application. Also, it can effectively induce pre-compression on the bottom concrete slab. Therefore, it can be concluded that the buoyancy preflexion method contribute to the improvement of structural performance and decreasing of the cross-sectional depth of floating structures.

  • https://doi.org/10.12652/Ksce.2012.32.2A.075 인용 PDF KSCI

Research of movement language communication through the dancetheater production process - dancetheater 'The tongue' - (춤연극 제작과정을 통한 움직임의 언어적 소통연구 - 작품 'The tongue'를 중심으로 -)

  • Yoon, Jeong Jin
    • Proceedings of the Korea Contents Association Conference
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    • 2017.05a
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    • pp.329-330
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    • 2017

  • 본 연구는 낭만주의 화가 프란시스코 고야의 작품 <아들을 먹어치우는 사투르누스>의 영감을 토대로 춤연극 를 제작하였다. 따라서 제작과정에 나타난 움직임의 상징적 의미와 언어적 소통의 다섯 가지 분석을 시도하였다. 연구결과 첫째, 표현주의를 대표하는 고야의 작품 <아들을 먹어치우는 사투르누스>에 나타난 공포와 괴기 속에 드러난 소통과 상징성은 움직임의 표현적 이미지에 하나의 'signal'적(的) 소통으로 직결되었다. 둘째, 프란시스코 고야가 나타낸 인간의 잔인성, 참혹함이 춤연극 제작을 통해 다른 의미로의 해석이 가능했다. 이것은 움직임 상징성과 역동적 에너지가 갖는 의미와 해석의 다양성으로 인식된다. 셋째, 정적이미지의 그림요소와 색채가 갖는 상징성은 춤연극의 언어적 유희와 움직임의 다섯 가지 상징적 이미지 체계로 정리되었다.

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