• Title, Summary, Keyword: 방위신상

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A Study on the Re-designed Bang-Wee-Shin-Sang to the Korean Tradition (한국 전통 "방위신상(方位神像)"을 재해석한 디자인 작품 연구)

  • Cho, BongSeok;Kim, SunBae
    • Journal of Digital Convergence
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    • v.11 no.4
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    • pp.431-441
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    • 2013
  • The aim of this study is to reinterpret the image on a Korean tradition known as Bang-wee-shin-sang (an image of direction deity), and to revive the image into Jikimee (the guardian). In particular, this research re-analyzed the image and the symbol of Bang-wee-shin-sang and effectively designed the tradition to fit the modern living space. The theoretical study is to explore why it is necessary to redesign Bang-wee-shin-sang to accommodate modern living after examining the background and origin of typical Korean traditions such as Four Deity painting, Chinese Zodiac, and Four Kings' Painting. As a previous study, we examined the procedures of making Jikimee which was based on artists' works that utilized historical artifacts. The study indicated that Bang-wee-shin-sang is a vital resource to disseminate the unique characteristics of Korea and its tradition which played a role in linking the past and the present. Consequently, it is discussed that the utilization of modernized Jikimee in smart environment must be supported by foundation of academic system, the effort of academic and research link, and government funding policy.

국방과학기술 특화연구센터 추진성과 및 발전방향

  • Kim, Yeo-U;Sin, Sang-Eun
    • Defense and Technology
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    • no.1
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    • pp.22-29
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    • 2001
  • 국방부는 기초연구의 체계적이고 효율적인 수행을 위해 대학 및 정부출연연구소에 5개의 특화연구센터를 지정하여 운용하고 있다. 특화연구센터의 운영은 날로 심화되는 선진국의 기술패권주의를 극복하고 미래의 첨단 방산장비 소요에 대비할 수 있는 핵심기술의 신속한 개발에 결정적인 촉매가 될 것으로 기대된다. 더욱이 1994년 설립된 자동제어, 전자광학, 전자파 특화연구센터는 지난해 2단계 연구개발 목표를 마치고 올해부터 3단계 목표를 수행하게 된다. 따라서 창간 기념 특별 기획으로 그 동안 특화연구센터의 활동을 중간 점검해 보고 앞으로의 추진 일정을 살펴보는 기회를 마련하였다.

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Implementation of A Millimeter-Wave Multiflare-Angle Horn Antenna (밀리미터파 다중개구각 혼안테나 구현)

  • Oh, Kyung-Hyun;Kim, Ji-Hyung;Yang, Seung-Sik;Shin, Sang-Jin;Cho, Young-Ho;Lee, Byung-Ryul;Ahn, Bierng-Chearl
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.29 no.1
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    • pp.36-41
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    • 2018
  • This paper presents an implementation of a millimeter-wave(W band) multiflare-angle horn antenna. The proposed antenna is a multimode dual-polarized square horn having equal E- and H-plane beamwidths and consists of a multimode generating section, a four-square-waveguide exciter, orthomode transducers, and power combiners for the sum pattern formation. The antenna structure has been designed to allow for easy fabrication and the designed antenna has been fabricated to a precision of ${\pm}0.02mm$ by layer-by-layer machining and diffusion bonding. The input reflection coefficient and the radiation pattern of the fabricated antenna have been measured using a network analyzer and a far-field test facility. Measurements show that the proposed antenna has 17.7~18.3 dBi gain, $25.2{\sim}28.5^{\circ}$ beamwidth, and an input VSWR between 1.02~1.75, within ${\pm}0.5GHz$ from the center frequency.

한국의 전통마을에서 본 공간구성과 환경설계 원칙

  • 신상섭;강인애
    • Proceedings of the Korean Environmental Sciences Society Conference
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    • pp.61-67
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    • 2003
  • 우리의 선인들은 자연환경과 풍토조건을 고려하여 ‘인간과 자연의 합일’이라는 안정된 생활환경공간을 조성하였는바 복거관에 따라 주거지를 조성하고 경작물재배에 유리한 조건을 만들며 이웃과 공동생활을 영위할 수 있는 삶터를 경영하였으며, 우주관에 따라 생활영역을 구축하여 삶에 대한 의미와 가치를 정신세계로 확장시켜 나가는 형이상학적 관념을 엿볼 수 있게 한다. 즉, 전통마을의 경영에는 하늘과 땅과 사람(천+지+인, 산+수+방위+사람)이 조우하여 균형을 이루고 합일되는 생명영속사상의 준거틀을 운용하여 물질적 풍요는 물론 정신적 풍요를 중시하는 환경설계 철학을 엿볼 수 있다. 특히, 마을의 조영체들을 자연환경 속으로 깊숙이 관입시켜 생태환경에 대한 질서와 평형원리를 존중하는 유기체론적 설계목표를 반영하였다. 안정된 생활환경공간으로서 생태적 네트워크를 구축한 환경설계기법은 입지, 토지이용과 동선, 주거형태, 생태, 영역성, 교육생활문화, 경관, 공동체 구성과 관련된 원칙의 내용을 담고 있다.

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A Study of Efficient CFAR Algorithm (효율적인 CFAR 알고리듬 연구)

  • Shin, Sang-Jin
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.25 no.8
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    • pp.849-856
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    • 2014
  • This paper proposes a new efficient CFAR algorithm. The structure of the proposed CFAR is relatively simple as compared with the OS-CFAR or ML-CFAR which are considered to deal with the nonhomogeneous environment such as clutter and multiple targets. The proposed algorithm is effectively applied to the radar signal processor with reduced computation burden. The relationship between the threshold and PFA of the proposed CFAR is derived analytically. The CFAR loss of the proposed CFAR algorithm is compared with CA-CFAR and OS-CFAR based on both SNR and ADT(Average Detection Threshold).

On the Origin and Development of Iconography of the Twelve Zodiac Signs of Royal Tombs of Joseon Dynasty (조선왕릉 십이지신상(十二支神像)의 도상(圖像) 원류와 전개 과정)

  • Kim, Ji Yeon
    • MUNHWAJAE Korean Journal of Cultural Heritage Studies
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    • v.42 no.4
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    • pp.198-221
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    • 2009
  • Royal tombs of Joseon dynasty are the crystallization of history, ideology, culture, art, architecture, and ritual ceremony of Joseon dynasty, all mingled in one. So, they are very significant symbols showing 500 years of dynastic history as a whole. Among various factors comprising a royal tomb, stone figures surrounding grave mound are special factors as a symbol protecting it. Further among them, twelve zodiac images arrayed nearest to the grave mound represent the core of the function. Images of twelve zodiac signs originated from the tombs of the Unified Silla Kingdom are certain to hold important role and position in the construction of royal tombs, judging from huge scale and excellent sculptural art of them. However, both their scale and form had been gradually simplified in Goryeo and Joseon dynasty, thus the importance of them has been underestimated compared to other stone figures Images of twelve zodiac signs were very important factors which decorated royal tombs both as a protective role and as a concept of direction. Their historicity and symbolism cannot be neglected in that they had been transmitted to the royal tombs of Joseon dynasty. In this paper, images of twelve zodiac signs expressed in the royal tombs of Joseon dynasty are classified into 3 forms, and reviewed the origin and development of them for each period. They could be classified into 3 forms ; civil vassals with human body and head, civil vassals with human body and head wearing hat decorated with zodiac animals, Chinese characters of either zodiac signs or either a combination of 10 calendar signs and 8 trigrams. The above 3 forms originated from China and became a favorite motif to decorate the royal tombs from early Joseon period until late Joseon by replacing each other and thus changing along the course of the dynasty. In the meantime, we can see a unique character in the images of twelve zodiac signs of royal tombs of Joseon dynasty. In some cases, 24 directions are expressed in which 10 calender signs and 8 trigrams are composed altogether. Images of twelve zodiac signs in the royal bombs of Joseon dynasty are very significant as evidences by which we can confirm uniqueness and tradition of Korean tomb system transmitted from Unified Silla period.

Tracking Filter Dealing with Nonlinear Inherence as a System Input (비선형 특성을 시스템 입력으로 처리하는 추적 필터)

  • Shin, Sang-Jin
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.25 no.7
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    • pp.774-781
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    • 2014
  • The radar measurements are composed of range, Doppler and angles which are expressed as polar-coordinate components. An approach to match the measurements with the states of target dynamics which are modeled in cartesian coordinates is to use the pseudo-measurements or the extended Kalman filter in order to solve the mismatching problem. Another approach is that the states of dynamics are modeled in polar coordinates and measurement equation is linear. However, this approach bears that we have to deal with a time-varying dynamics. In this study, it is proposed that the states of dynamics are expressed as polar-coordinate component and the system matrix of the dynamic equation is modeled as a time-invariant. Nonlinear terms that appear due to the proposed modeling are regarded as a system input. The results of a series of simulation runs indicate that the tracking filter that uses the proposed modeling is viable from the fact that the Doppler measurement is easy to be augmented in the measurement equation.

A Study for Assessment of Track Accuracy of Phased Array Radar Associated with α-β Filter (α-β 필터를 사용한 위상배열 레이더의 실표적 추적 정확도 평가 알고리듬 연구)

  • Shin, Sang-Jin;Kim, Wan-Gyu
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.26 no.9
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    • pp.828-836
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    • 2015
  • In this paper, the assessment technique for track accuracy in the phased array radar is proposed. It is assumed that ${\alpha}-{\beta}$ tracking filter to track the target is established in the phased array radar. In order to assess the track accuracy strictly, we should use the real target position data acquired from the special instrument, ACMI(Air Combat Maneuvering Instrument) pod or DGPS(Differential Global Positioning System). However, this method leads to increase the experiment cost and test time. We derive the relationship between the residuals of tracking filter and the standard deviations of range and angle tracking errors which are assigned as track assessment index. The theory of sample variance is introduced in this assessment because track accuracy has to be calculated with many residual samples.