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고체기준전극 및 원격전위측정 시스템 개발에 관한 연구 (A Study on the Development of Solid Reference Electrode and Remote Protection Potential Measuring System)

  • 류영돈;김진준;김동균
    • 한국가스학회지
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    • 제19권3호
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    • pp.38-43
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    • 2015
  • 지하에 매설된 도시가스 배관은 부식으로부터 보호하기 위하여 전기방식조치를 하도록 하고 있으며, 전기방식시설의 효과적인 유지관리를 위해 1년마다 배관의 전위를 측정 하도록 하고 있다. 방식전위의 측정은 테스트박스(T/B)에서 실시하게 되는데, 도심에 설치된 T/B의 경우 대부분 도로상에 설치되어 있어 전위를 측정할 때 어려움이 있다. 즉, 교통량이 많은 도로에서 전위를 측정하기 위해서는 차량을 통제하거나, 교통량이 적은 심야에 실시해야 하는 등 어려움이 있다. 본 연구에서는 이러한 방식전위 측정의 문제점을 해결하기 위해 고체기준전극 및 무선통신기술을 이용한 원격전위 측정시스템 개발에 관한 연구를 수행하였다. 고체기준 전극을 개발하여 실험실에서 성능테스트를 실시하고, 도시가스 배관이 설치된 현장에 직접 매설하여 전위 값의 변화를 관찰하였다. 또한, 무선통신을 이용하여 측정된 전위값을 서버로 전송하고, 사무실에서 전위값의 변화를 확인하였다. 고체기준전극을 이용한 전위값은 국내에서 사용되고 있는 타사 제품과 큰 차이가 없는 것으로 확인되었으며, 현장에서 측정한 전위 값과 웹서버로 보내진 전위값의 차이는 없었다. 개발된 고체기준전극은 향후 도심에 설치된 테스트 박스의 전위를 차량을 이용하여 측정하는데 사용할 계획이다.

자연채광방식의 응용에 따른 시각적 쾌적성에 관한 연구 (A Study on Visual Comfort for Light Control Method of Applied Daylighting)

  • 한상필;한상철
    • 한국태양에너지학회:학술대회논문집
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    • 한국태양에너지학회 2012년도 춘계학술발표대회 논문집
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    • pp.140-145
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    • 2012
  • The purpose of this study is to understand the change of impression by comparing the uniformity lighting with the compound lighting. In previous study, we proposed a light controlling method to harmonize daylight from a window and artificial lights from a ceiling and obtained the results to support our method. We referred this method as the Adjusted Compound-Lighting Model (AC Model). The model claims that lighting in a room with a side-window are perceived as harmonious when the overall light distribution in the room is well approximated by a compound of lights from the window and the entire ceiling. The experiment is carried out with the scaled-models and mock-up spaces that were supposed to be an office space. One is lit by the uniform lighting and the other by the compound lighting in each experimental space. In order to present varying illuminance distributions, thetwo variables were used in this study. One was the ratio of thelight from the window and ceiling in the standard and evaluation box. The standard box was provided by the ratio of 20% to 40% from the window and 80% to 60% from the ceiling as two lighting ratio patterns [Wu20(=Cu80) and Wu40(=Cu60)]. And the evaluation box was provided by the light ratio of 0% to 40 from the window and 100% to 60% from the ceiling [Wcp0(=Ccp100), Wcp20(=Ccp80) and Wcp40(=Ccp60)]. The other variable was themean illuminance level in both boxes. Two level of mean illuminance (700lx and 300lx) were used in this experiment. Each lighting condition was established at equal horizontal mean illuminance level, held constant near 700lx or 300lx in both boxes. Both of them were similar in the shape of distribution when there were same ratios of lights from the window and the ceiling. Subjects were asked to evaluate the point of difference by semantic differential rating on their overall impression after comparing with two rooms. The results showed that the impressions of compound lighting were more positive score than that of uniformity lighting on the items of 'dim-bright', 'dislike-like', 'artificial-natural' and 'closed-open', and that there was no significant difference in impressions between two spaces on other items.

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간호사가 인지하는 연구결과 이용의 장애요인 (Nurses' Perception of Barriers to Research Utilization)

  • 이은현;김혜숙
    • 대한간호학회지
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    • 제30권5호
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    • pp.1347-1356
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    • 2000
  • The present study is a descriptive study to investigate nurses’perception of barriers to research utilization. A total of 274 participants in this study consisted of registered nurses working in a large, urban and academic medical center. A questionnaire packet containing the Barriers Scale, and a demographic profile was distributed to nurses and they were asked to return the packet to a return-box in the Nursing Office after completion. The greatest barrier was insufficient time on the job to implement new ideas. Next was ‘implications for practice are not made clear'. Also the item of the English language in research articles was considered to be the ninth barrier. The greatest mean score of each of the sub-scales was the communication factor. The were followed by the organization, research, and nurse factors. Compared with the means from other studies, the mean scores of the communication and research factors were higher in this study. Nurses who had not taken a class of research methods found the communication and research factors as a higher barrier than those who did. Also, nurses who did not participate in a conference last year perceived the research factor as higher than those who did. It is recommended that English and research classes should be strengthened in educational nursing programs. The researchers should also describe the section of implication for practice as more detail and clearer for the understanding of nurses; Lastly journals in a libraries or online journal systems should be easily accessible.

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전기적 노이즈에 의한 누전차단기의 오동작에 관한 실험적 연구 (An Empirical Study on Malfunction of the Earth Leakage Circuit Breaker)

  • 김태만;권용준;기도형
    • 한국안전학회지
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    • 제17권1호
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    • pp.45-53
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    • 2002
  • The purpose of this study was to investigate effect of electrical noise on malfunction of the earth leakage circuit breaker. A three-way experiment for studying its malfunction was conducted, in which electrical products such as radio, alternating current are welder and cellular phone, distance from the earth leakage breaker to electrical products, and whether or not the earth leakage breaker is contained is contained in the steel box were employed as experimental variables. Eleven earth leakage breakers frequently used in real situations were tested in each experimental treatment. The electrical products were used for generating electrical noise that is known to be able to cause malfunction of the earth leakage breaker. The results showed that except a case for one of the 11 earth leakage breakers when the radio made by M company was located 30 cm ahead of the breaker, malfunction did not occur in any other experimental treatment. Consequently, it is suggested that the breaker should be normally used for preventing electricity-related accidents without fear of its malfunction in industrial sites.

일본에 수출된 한국영화 특성 분석 (Analysis of the Distinction of the Korean Movies in the Japanese Market)

  • 서유정;황인석;안성아
    • 한국콘텐츠학회논문지
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    • 제8권1호
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    • pp.386-397
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    • 2008
  • 최근 국내외에서 주목을 받아 온 한국영화는 질적, 양적으로 성장하였지만, 제작비 상승으로 해외시장 진출을 고려하지 않으면 안 되는 시점에 와 있다. 본 연구는 한국영화 수출액의 50% 이상을 차지하는 일본 시장에 초점을 맞춰 수출된 한국 영화 특성을 분석하고자 하였다. 분석 결과 일본에 수출된 영화들은 한국에서 흥행성적이 좋았던 영화, 일본에서 인지도가 있는 감독과 배우가 출연한 영화 비중이 높았고, 내용면에서는 일본 원작 영화의 수출 비율이 높았다. 장르에 있어서는 멜로 장르의 비중이 높고 코미디 수출은 저조하여 코미디가 문화적 할인율이 높은 장르임을 시사하였다. 본 연구는 실제 데이타에 의한 계량적 분석을 통해 해외 시장에 대한 이해를 넓히고, 일본에 수출할 영화를 기획할 때 프리프로덕션 단계에 도움이 되는 정보를 제공한 의의를 가진다.

빅데이터를 활용한 영화 흥행에 따른 리뷰길이 변화 (Changes in Review Length Based on the Popularity of Movies Using Big Data)

  • 조용희;박이슬;김혜진
    • 한국콘텐츠학회논문지
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    • 제18권5호
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    • pp.367-375
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    • 2018
  • 본 연구에서는 영화 관람 후 높은 평점을 매긴 집단과 낮은 평점을 매긴 집단 중 어느 집단이 영화에 대해 더 많은 이야기를 하는지, 즉 온라인 리뷰를 길게 작성하는지에 대해 알아보고자 하였다. 이를 위해 네이버 영화 API에서 제공하는 영화 평점과 리뷰 데이터를 수집하였고, 한국영화진흥위원회에서 제공하는 영화 손익분기점 데이터를 이용하여 영화를 흥행성공, 흥행부진, 흥행실패로 구분하여 영화 평점과 리뷰길이 간의 상관관계, 영화 개봉 전과 후, 흥행여부에 따른 리뷰길이의 특성, 마지막으로 영화 평점이 리뷰길이에 영향을 미치는가에 대한 회귀분석을 실시하여 제시하였다.

사용자 위주의 멀티미디어 서비스를 위한 시멘틱 기반의 사서함 구조 (A Semantic-based Post-office Box Structure for User-centered Multimedia Services)

  • 이종득;안정용
    • 한국지능시스템학회논문지
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    • 제16권4호
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    • pp.402-409
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    • 2006
  • 최근에 분산 환경에서 사용자 위주의 멀티미디어 서비스를 효율적으로 제공하기 위한 여러 가지 방법들이 제안되고 있다. 멀티미디어 데이터의 분산 서비스를 위해서는 QoS 향상, 스트리밍 그리고 동적 서비스의 개선과 같은 문제점이 제기되고 있다. 본 논문에서는 분산네트워크 환경에서 사용자 위주의 서비스를 위한 $POX -H_{r}$구조를 제안하였다. 제안된 구조는 disjunct, conjunct, semantic 그리고 filtering에 의해 $POX -H_{r}$ 구조로 사상되며, 사상된 구조는 $M_{filtering}$에 의해 갱신된다. 비교분석 결과 제안된 기법의 성능이 보다 효율적임을 보인다.

영화 '타이타닉(TITANIC)'의 의상에 관한 연구 (A Study on the Cinema Costume for the 'TITANIC')

  • 이혜경;정흥숙
    • 복식
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    • 제57권1호
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    • pp.1-16
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    • 2007
  • This study is to design costumes of each characters, seen in the film of 'TITANIC' directed by James Cameron in 1997, by analyzing various costumes for each roles in the film. The 'TITANIC' has got the 'Oscar Award' in 1998 in 11 sectors for its' high box office record and the finest of the work, based on successful visualization of the costumes for the contemporary characters by historical research. The social background of 'TITANIC' would be presumed in the year of 1912, of which era was also called by 'La Belle Epoque', to say, 'good period'. This study, therefore, traced the representative art trend for the 1910's, together with political, economical and social backgrounds as 1st step. The 2nd step is the consideration of fashion trends of costume affected by the contemporary trends such as Art Nouveau and Art Deco in the period. The 3rd step is the analysis of costumes in the film of 'TITANIC'. Finally, this work has designed the virtual costumes of the characters, in imaginary scenes, which could denote the nature of the personality. Hopefully, this study could help designers show sustainable development in creating cinema costumes and other related projects, based on the understandings of this work.

The effect of Reynolds numbers on the steady state aerodynamic force coefficients of the Stonecutters Bridge deck section

  • Hui, M.C.H.;Zhou, Z.Y.;Chen, A.R.;Xiang, H.F.
    • Wind and Structures
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    • 제11권3호
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    • pp.179-192
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    • 2008
  • In a wind tunnel experiment employing a reduced scale model, Reynolds number (Re) can hardly be respected. Its effects on the aerodynamics of closed-box bridge decks have been the subject of research in recent years. Stonecutters Bridge in Hong Kong is a cable-stayed bridge having an unprecedented central span of 1018m. The issue of Re sensitivity was raised early in the design phase of the deck of Stonecutters Bridge. The objective of this study is to summarise the results of various wind tunnel experiments in order to demonstrate the effect of Re on the steady state aerodynamic force coefficients. The results may provide an insight on the choice of scale for section model experiments in bridge design projects. Computational Fluid Dynamics (CFD) analysis of forces on bridge deck section was also carried out to see how CFD results are compared with experimental results.

웹툰에서 영화로의 매체전환 성공 사례 연구 - 영화 <신과함께-죄와 벌>을 중심으로 - (Successful Case Studies of Media Conversion from Webtoon to Movie - Focusing on the Movie -)

  • 박찬익
    • 디지털산업정보학회논문지
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    • 제14권2호
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    • pp.61-67
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    • 2018
  • This media conversion in which webtoons are remediated to movies and dramas has taken off since the mid-2000s. Webtoons may be favorable for media conversion into movies and dramas as the story as finished and has proven to be fun with a fixed readership: however, only a small number of webtoon were successful box office hits or received high viewer ratings. Then in 2017, the movie based on the webtoon, succeed in attracting more more then 10 million viewers. In this regard, this study derived the success factors by comparing and analyzing the narrative structure and visual elements of , which was the biggest hit movie, with the original webtoon. The case analysis showed that there are two necessary elements for success: a text configuration of strategy optimized for media conversion, which is based on understanding the different media characteristics of webtoon and movie; and a configuration strategy that exaggerates the personalities of the characters and compresses the story of a webtoon which features various events and many characters in a long series, in consideration of the characteristics of movie which needs to give a big impact in 2 hours.