• 제목/요약/키워드: Formal power

검색결과 175건 처리시간 0.023초

ISSUES IN FORMULATING PERFORMANCE-BASED APPROACHES TO REGULATORY OVERSIGHT OF NUCLEAR POWER PLANTS

  • YOUNGBLOOD R. W.;KIM I. S.
    • Nuclear Engineering and Technology
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    • 제37권3호
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    • pp.231-244
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    • 2005
  • In recent decades, significant effort has led to risk-informed improvements to regulation. Performance-based approaches also promise significant gains in efficiency (level of safety versus effort). However, significant work remains to be done before performance-based approaches realize their full potential in regulation of nuclear power plants. This paper reviews key concepts related to performance-based regulation, discusses some applications of performance-based approaches, and identifies issues that still need to be addressed. Realistic, experience-based models of licensee performance are still lacking; this makes it difficult to assess the prospective effectiveness of any given regulatory approach, in light of the performance issues that it will actually face. Also, while 'compliance' is an intuitively straightforward concept to apply within a prescriptive implementation, its analog in a performance-based approach remains unclear. An overarching theme of the paper is that formal methods of decision analysis are very helpful in developing appropriate regulatory approaches, especially performance-based ones; this theme is illustrated at several points.

전파 뇌충격전압 측정용 표준 저항분압기의 개발 (Development of Standard Resistor Divider for Full Lightning Impulse Voltage)

  • 김익수;문인욱;김민규;김영배;김진기;이형호
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1994년도 하계학술대회 논문집 C
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    • pp.1633-1635
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    • 1994
  • This paper presents the development technology of standard resistor divider for full lightning impulse voltage. The ability of high voltage bulk power equipment to withstand lighting stroke is usually evaluated by means of full lightning impulse voltage. Lightning impulse voltage test has been essential to evaluate the insulation performance of electrical power apparatus. Recently International standard (IEC 60) on high voltage measurement techniques is being revised and requests a formal traceability of high voltage measurements. Therefore, general interest for this area has grown considerably during last years, and several international intercomparisions have been completed already worldwide, i.e. Europe, Japan, America etc.. In this viewpoint, we have also investigated the standard resistor divider with shield, which satisfies the IEC recommendation.

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전파 뇌충격전압 측정용 쉴드저항분압기의 직각파 특성에 관한 연구 (A Study on the step response characteristics in shielded resistor divider for full lightning impulse voltage)

  • 김익수;이형호;조정수;박정후
    • 대한전기학회논문지
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    • 제45권2호
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    • pp.283-288
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    • 1996
  • This paper presents the development technology of standard shielded resistor divider for full lightning impulse voltage. The ability of large-capacity power apparatus to withstand lighting stroke is usually evaluated by means of full lightning impulse voltage. Lightning impulse voltage test has been essential to evaluate the insulation performance of electrical power apparatus. Recently international standard (IEC 60) on high voltage measurement techniques is being revised and requests a formal traceability of high voltage measurements. Therefore, general interest for this area has grown considerably during last years, and several international intercomparisons have already completed worldwide, i.e. Europe, Japan, America etc., In this viewpoint, we have also investigated the step response of the standard shielded resistor divider, which satisfies the IEC recommendation.

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굴삭기를 이용한 돌쌓기 장치 개발 (Development of Stone Piling-up Device for an Excavator)

  • 권순광;김용석;이동영;이창돈;양순용
    • 유공압시스템학회논문집
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    • 제5권3호
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    • pp.9-14
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    • 2008
  • The application of an excavator can be expanded to various works through change of end-effector. In this paper, a gripper, which can pick up and rotate a fixed formal stone, was developed. The device was designed and produced to pick up and rotate a stone for an excavator. The maximum weight of stone was computed to prevent from reversal in according to each displacement of attachments. The necessary force of a hydraulic cylinder to grip a stone was obtained by simulation.

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근대주의 건축에서 모더니티 표상의 문제 - 장식의 배제와 표면의 부각을 중심으로 - (Presentation and Representation of Modernity in Modern Architecture - On Exclusion of Ornament and Emergence of the surface -)

  • 강혁
    • 건축역사연구
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    • 제15권4호
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    • pp.37-56
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    • 2006
  • Introducing International Style, P. Johnson and H. R. Hitchcock gave three standards to be the Modern, volume and surface, regularity, and exclusion of applied decoration. In spite of the negation of stylistic, formal approach in the Modernist Manifestoes, one usually have understood Modernity in Architecture with its formal character, especially with no ornament and flat, abstract, white surface. Modernism as a new paradigm in architecture have emphasized that there is no representation of anything outside and only present architecture in itself. They said that Modernism only cared about the language of Architecture without figural reference. So apparently there is no way to prove to its Modernity with formal condition. Modernity is in Spirit and contents. But actually we understand well its existence by visual communication This study deals with this difficult situation how Modernity represents itself without visual media and asks the question how simultaneously it presents its thingness and materiality In order to analyse contradictory situation between representation and presentation in Modern Architecture we need to survey the historical process of changing position of ornaments and its meaning in time. With the crisis of representation the role of ornament have seriously changed and divided. It caused the two situation in pre-Modern Architecture. Firstly, Architecture tend to be a high art and formal expression became important much more. The Use of Ornament became a kind of fashion to show the power, class, money. Secondly, Ornament lost its cultural weight and the structure and material aspect became the central in architecture. Rational Structuralism would be the essential character in Modern Architecture. Here the theory of G. Semper and A. Loos on cladding(dressing) and Ornament can help its problems and limits. In the situation without conventional ornament Modernists need to present modernity with new media that only show the thing itself and by that it does not represent any thing else as like the value, idea outside buildings. They believed that only it concerned esthetics and morality in architecture. But in reality it referred to art and machines as like ships, aircraft, and cars. By excluding Ornament and showing the process of clearing, abstract, flat, white surface 'represent' Modernity by the indirect way referring the concept of transparency, reason, sanitation, tectonics, etc. An Ideology and myth intervened architectural discourse to make the doxa about the representation in Architecture. Surface must be a different kind of media and message that can communicate in different way with compared to conventional Ornament. Decorated Shed by R. Venturi and Post-Functionalism by P. Eisenman, that are the most famous post-modern discourse, shows well difficult and contradictory condition in contemporary architecture concerning representation and form, meaning and form.

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다변화시대에 대비한 군 정신교육 개선에 관한 연구 (A Study on the Improvement of Military Spiritual Education in Preparation for the Diversification Era)

  • 이승진;이영욱
    • 융합보안논문지
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    • 제17권2호
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    • pp.137-144
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    • 2017
  • 장병들의 무형전력을 구성하는 정신전력은 최근에 우리가 처한 안보상황을 감안할 때 매우 중요하다고 하겠다. 동서고금을 막론하고 전쟁사를 살펴보면 무형전력은 국가의 흥망성쇠는 물론 전쟁의 승패를 좌우하는 핵심적인 요소로 평가되고 있다. 최근 우리 군이 군에서 시행되고 있는 정신교육을 개선하기 위해 나름대로의 노력에도 불구하고 여전히 대다수의 장병들은 정신교육을 '의례적인 교육, 지루한 교육, 시간 때우기 식 교육'으로 여기고 있으며, 불미스러운 군 관련 사건과 사고가 발생할 때마다 정신교육의 효과에 대해 의문과 문제가 끊임없이 지적되고 있는 실정이다. 따라서 본 연구는 바로 이러한 문제의식에서 시작된 것으로서 그 목적은 현행 군 정신교육의 문제점을 분석함으로써 인지중심의 군 정신교육의 발전방향을 모색하여 다변화 시대에 적합한 강군을 양성하는데 방향을 제시하고자 한다.

파워 숄더 재킷의 조형적 특성과 시각적 이미지 (A Study on the Formative Characteristic and Visual Image of the Power Shouldered Jacket)

  • 김정미;이정순
    • 한국의상디자인학회지
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    • 제11권3호
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    • pp.125-134
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    • 2009
  • The purpose of this study is to analyze the formative characteristics of power-shoulder jacket shown in 08/09 F/W and 09/10 F/W London, Paris, Milan, New York collection and extract main expression words for development of semantic differential scales of visual image according to the change in shoulder angle and width of power-shoulder jacket. The result of this study is as follows. Power-shoulder jacket which were worn by 1980 business women have similar cutting with men's suit jacket, but have characteristics of exaggerating the body figure as exaggerated shoulder with pad and tight waist like an inverted triangle silhouette. Power-shoulder jackets shown in collections used glossy and glittering material and dark colors and formed slim silhouette with matches of shoulder line of temperate senses and casual wear. Like this, the power-shoulder jacket was expanded to daily casual wear from traditional formal wear. Main expression words of visual image of jackets according to the changes in angle and width of shoulder differ greatly depending on the expansion degree of angle and width of shoulder. Changes in shoulder angle may look tense, stiff and too much according to the amount of changes. However, it also has the image of sharp but dignified and charismatic. Also, it helps to show body figure more efficiently like being slim and looking taller. Related to the current trend emphasizing shoulder among women, it is evaluated to be stylish and trendy. When the expansion degree is not too much, changes in shoulder width partly show slim and slender waist under the influence of wider shoulder with basic tailored jacket image. However, when the expansion degree is enlarged, image related to the body figure is more definite compared to other visual images.

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비접촉 전원장치에 적용한 직.병렬 공진 DC/DC 컨버터에 관한 연구 (A Study on the Serial-Parallel Resonant DC/DC Converter for Contactless Power Supply System)

  • 황계호;이봉섭;김동희
    • 조명전기설비학회논문지
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    • 제22권5호
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    • pp.31-40
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    • 2008
  • 최근 FPD 산업에서 물류이송장비의 전원장치로 비접촉 전원장치에 관한 연구가 활발히 진행되고 있다. 양산 라인에 적용되고 있는 물류장비의 비접촉 전원장치는 주로 직선구간을 왕복하고, 이송대차가 한 대인 경우에 적용하고 있다. 그러나 곡선 구간과 이송대차가 다수인 경우의 물류이송장비에는 적합하지 않다. 따라서 본 논문은 직 곡선 구간이 혼용되어진 구조이고, 이송대차가 한 대 이상으로 구동되는 물류이송장비의 비접촉 전원장치 시작품에 적용하였고, 적용된 비접촉 전원장치의 회로 구조는 풀 브릿지 구조를 갖는 직 병렬 공진 DC/DC 컨버터 회로로 하여 회로해석, 제어방법, 특성평가, 실험을 통한 적용 가능성에 대한 연구를 행하였다. 또한 비접촉 전원장치의 전체 제어는 1차측 전원공급장치에 일정한 공진전류를 제어하기 위해 듀티 제어를 사용하였고, 2차측 전원공급장치의 출력전압을 일정하게 유지하기 위해 다수의 이송대차가 자체 제어를 하도록 구성하였다. 실제 2대의 이송대차를 제작하여 직 곡선 구간을 구성하고, 물류이송장비를 운용하여 양호한 특성으로 적용 가능함을 알 수 있었다.

부산지역 해양교육 현황 및 활성화 방안에 관한 연구 (A Study on the Status and Revitalization of Ocean Education in Busan)

  • 문성배;정우리
    • 한국항해항만학회지
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    • 제36권6호
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    • pp.507-512
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    • 2012
  • 우리나라는 세계 5위의 해운국가이며, 특히, 부산은 세계 3위의 최대 컨테이너 항만시설과 물류시스템을 갖추고 있는 해양도시이다. 하지만 부산시민의 해양의식은 이에 미치지 못하고 있다. 이에 부산지역 해양교육의 현황을 분석한 결과, 해양교육 프로그램의 획일화, 해양교육 체계 미비, 해양교육 프로그램 운영미흡, 해양교육 실시 전문 인력 부족, 해양교육 실시기관간의 연계부족 등 크게 5가지의 문제점을 지적하였다. 이러한 문제점을 개선하기 위해서는 해양교육모듈을 개발하고 교육모듈을 하나의 주제에 맞게 편성하는 해양교육코스를 설계, 이러한 교육을 총괄적으로 운영하는 해양교육센터를 설립할 필요가 있다. 또한 해양교육을 내실 있는 정규교육과정으로 편성하여 교육효과를 극대화 시킬 수 있을 것이다. 이를 통해 부산시가 해양도시로 명성을 이어가고 건전한 친수문화의 조성과 해양문화를 널리 전파할 수 있을 것이다.

인터넷 판매를 통한 생활한복의 활성화 연구 (A Study on active use of Daily Hanbok through sales on The Internet)

  • 소현정;심화진
    • 복식
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    • 제50권4호
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    • pp.181-195
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    • 2000
  • This study was conducted from Sep., 1999. to Nov., 1999. It researched approximately 60 specialized manufacturers who had homepages on the Internet. Of the 60 manufacturers, 20 of them were chosen for the study all of whom had relatively were made homepages that were geared towards sales. 1. Daily Hanboks on the homepages were put in an electronic catalog. They were photographed and well described. Each picture could be enlarged when needed. 2. The Hanbok's were made for men, women and children. There were every couple's Hanboks. The Hanboks used natural material, mixed spinning and chemical textile, which was easily kept and washed. It was intended, as clothes for everyday wear Silk was used for formal clothes. 3. The prices ranged from low-middle to high clothing for everyday life is reasonable and street wear and formal dresses are priced high. The color of the dresses are not vibrant, but natural and light. As Hanboks become more in demand, there will be more choices available. 4. As matter of the sizes shows weakness. In general they use the western size system. The purpose of this study is to show the direction that Hanbok manufacturers may take for the internet sales and for being more active to promote the spread of the dress. This research came to the fellowing conclusion. Even though Hanbok manufacturers operate homepages. it seems that they are not well used. However, many internet shopping malls have been opened and they have put Daily Hanboks into one of their sales categories. The internet malls are getting more active and are expanding more. Therefore the market value of the Hanboks in the future look optimistic. If smaller sized manufacturers of Daily Hanbok's establish cooperative network that have no time and space limit, they can use the strong power of the market as the market development for Daily Hanboks is endless.

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