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선형 집속 가열시 Bi-Pb-Sr-Ca-Cu-O 계 초전도체 후막의 미세 조직 변화에 관한 연구
주재현,주승기 대한금속재료학회(대한금속학회) 1992 대한금속·재료학회지 Vol.30 No.2
We have obtained a dense and unidirectionally solidified Bi-Pb-Sr-Ca-Cu-O superconductor thick film by line heating. When the maximum line heating temperature was above 870℃, it was divided into a (001) textured l0K phase and a Bi free phase solidified in scanning direction. After post heat treatment at 860℃ for 12h, it became a dense and homogenious superconductor(Tc=65K) by diffusion between two phases.
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주재현(朱宰賢),진종순(陳種淳) 한국정책과학학회 2014 한국정책과학학회보 Vol.18 No.2
대북·통일 관련 업무 영역은 상당히 넓다. 이에 따라 정부 전체적인 차원에서 좀 더 통합적이고 체계적으로 정책을 수립하고, 이를 수행·관리할 필요성이 제기되고 있다. ?남북관계 발전에 관한 법률?과 그 시행령(제6조 2항)은 통일부로 하여금 각 중앙행정기관의 연도별 통일·대북 관련 업무추진실적을 점검하도록 하고 있다. 이는 통일부가 주체가 되어 여러 중앙행정기관들에서 분산 수행중인 통일·대북 관련 업무 추진 상황을 점검·조정하고, 이를 통해 정책의 통합적·체계적 추진을 모색하기 위한 제도적 장치라고 하겠다. 이 연구는 각 중앙행정기관의 대북·통일업무 추진실적에 대한 통일부의 점검 현황을 검토하고, 이를 토대로 실효성 있는 통일·대북업무 평가체계의 개선방향을 모색하고자 한다. 이를 위해 통일부 및 각 중앙행정기관의 관련 법규와 문헌에 대한 검토를 실시하고, 대북·통일 분야 전문가 및 정부업무평가 분야 전문가를 대상으로 한 인터뷰와 설문조사를 실시한다. 마지막으로, 문헌조사·인터뷰·설문조사의 결과를 비교·검토·분석하여, 대북·통일업무 평가체계의 대안을 모색한다. This study analyzes the assessment maiden by the Ministry of Unification on various Korean government agencies’unification policies. According to the interview and survey results, the assessment on the unification policies is not going very well. Most of the government agencies do not concern on their unification policies because those policies are in their minor interest. They concern on the policies from time to time with the change of political agendas. As a result, the unification policies have not implemented in the long point of view. This study suggests three alternatives, strict policy evaluation, expanded policy evaluation and establishment of independent policy evaluation, to resolve this problem. The assessment of the Ministry of Unification can be improved by adapting these three options. However, these three options cannot become a panacea. In basic, the Ministry of Unification should have enough power acts as a control tower.
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Bamboo Salt Suppresses Colon Carcinogenesis in C57BL/6 Mice with Chemically Induced Colitis
주재현,이가영,김윤세,장희경,도명술,박건영 한국식품영양과학회 2016 Journal of medicinal food Vol.19 No.11
The aim of our experiment was to evaluate the anticancer effect of bamboo salt (BS) on C57BL/6 mice in an azoxymethane (AOM)/dextran sodium sulfate (DSS)-induced colon cancer model. BS, solar salt, and purified salt were evaluated for their protective effects during AOM/DSS-induced colon carcinogenesis in C57BL/6 mice. BS, especially after baking for nine separate intervals (BS9x), suppressed colon carcinogenesis in the mice. BS9x decreased colon length shortening, weight-tolength ratios, and tumor counts. Pathological evidence from histological evaluation by hematoxylin and eosin staining also revealed suppression of tumorigenesis. BS9x lowered serum levels of proinflammatory cytokines (TNF-α, IL-6, and IL-1β) to close to those of the Normal group. Additionally, BS9x suppressed colon mRNA expression of proinflammatory factors and significantly regulated mRNA levels of the apoptosis-related factors, Bax and Bcl-2, and the cell cycle-related genes, p21 and p53. Additionally, immunohistochemistry showed that BS promoted p21 expression in the colon. Taken together, the results indicate that BS exhibited anticancer efficacy by modulating apoptosis- and inflammation-related gene expression during colon carcinogenesis in mice, and repetition in baking cycles of BS enhanced its anticancer functionality.
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공기중의 방전에 따른 방사전자파의 주파수 스펙트럼 특성
주재현 거제전문대학 1999 論文集 Vol.8 No.-
Insulation diagnosis techniques of power equipments for the stable power supply and prevention from accidents are of high importance. Diagnosis techniques is able to prevent from large accidents before they happen by finding signs of the accidents. From this point of view, this paper simulated discharge progress and partial discharge using needle-plan electrode system in air, studied the distribution of frequency spectrum of the radiated electromagnetic waves using antenna and spectrum analyzer. From results of this study, the new method was introduced for measurement and analyzation of the radiated electromagnetic waves in accordance with discharge progress in air, Besides, according to the consideration of the mutual relation between frequency spectrum of the radiated electromagnetic waves and discharge progress, it was confirmed that detecting partial discharge and estimating discharge progress were possible.
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주재현 거제전문대학 1998 論文集 Vol.7 No.-
In this study, the relation of discharge patterns with the radiated electromagnetic waves is investigated by measuring electromagnetic waves using a antenna and a spectrum analyzer. The patterns of radiated electromagnetic waves measured at the atmospheric pressure in Liquid Nitrogen(LN_(2)) during the partial discharges in nonuniform electric field depend on positive DC power. From these points of view, it is considered that these results obtained from this investigation may be used as fundamental data for diagnosis and prediction of insulation on the equipments of superconducting and cryogenic applications.
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주재현,오정수,Ju, Jae-Hyon,Oh, Jeong-Su 한국정보통신학회 2012 한국정보통신학회논문지 Vol.16 No.7
본 논문에서 선명 화질은 물론 저화질 문서영상에서 에지를 이용해 문서영상의 기울기를 검출하고, 보정하는 알고리즘을 제안한다. 제안된 알고리즘은 영상 복잡도를 이용해 문자영역을 선택하여 에지를 검출하고, 이들을 다양한 방향으로 투영하여 투영 히스토그램들을 생성한다. 그리고 히스토그램들에서 에지 집중도를 평가하여 문서영상의 기울기를 검출하고 기울어진 문서 영상을 보정한다. 고속 기울기 검출을 위해 부표본화와 3단 coarse-to-fine 탐색 알고리즘을 사용한다. 선명 화질과 저화질 영상의 기울기 검출에서 제안된 알고리즘의 최대 검출 오차와 평균오차가 기존 유사 알고리즘의 50% 정도이고, 기울기 검출 시간은 25%정도로 감소된다. 모바일기기로 취득된 밝기 불균일 영상에서는 기존 알고리즘은 적절한 2진 영상을 얻을 수 없어 기울기 검출이 어려우나 제안된 알고리즘의 평균 검출 오차 0.1o 이하로 기울기를 검출한다. This paper proposes an algorithm detecting the skew of the degraded as well as the clear document images using edge and correcting it. The proposed algorithm detects edges in a character region selected by image complexity and generates projection histograms by projecting them to various directions. And then it detects the document skew by estimating the edge concentrations in the histograms and corrects the skewed document image. For the fast skew detection, the proposed algorithm uses downsampling and 3 step coarse-to-fine searching. In the skew detection of the clear and the degraded images, the maximum and the average detection errors in the proposed algorithm are about 50% of one in a conventional similar algorithm and the processing time is reduced to about 25%. In the non-uniform luminance images acquired by a mobile device, the conventional algorithm can't detect skews since it can't get valid binary images, while the proposed algorithm detect them with the average detection error of 0.1o or under.
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