• Title/Summary/Keyword: Formal power

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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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    • v.37 no.3
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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.

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

  • Kim, Ik-Soo;Moon, In-Wook;Kim, Min-Kyu;Kim, Yung-Bae;Kim, Jin-Gi;Lee, Hyeong-Ho
    • Proceedings of the KIEE Conference
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    • 1994.07b
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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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A Study on the step response characteristics in shielded resistor divider for full lightning impulse voltage (전파 뇌충격전압 측정용 쉴드저항분압기의 직각파 특성에 관한 연구)

  • 김익수;이형호;조정수;박정후
    • The Transactions of the Korean Institute of Electrical Engineers
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    • v.45 no.2
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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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Development of Stone Piling-up Device for an Excavator (굴삭기를 이용한 돌쌓기 장치 개발)

  • Kwon, S.K.;Kim, Y.S.;Lee, D.Y.;Lee, C.D.;Yang, S.Y.
    • Transactions of The Korea Fluid Power Systems Society
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    • v.5 no.3
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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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Presentation and Representation of Modernity in Modern Architecture - On Exclusion of Ornament and Emergence of the surface - (근대주의 건축에서 모더니티 표상의 문제 - 장식의 배제와 표면의 부각을 중심으로 -)

  • Khang, Hyuk
    • Journal of architectural history
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    • v.15 no.4
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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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A Study on the Improvement of Military Spiritual Education in Preparation for the Diversification Era (다변화시대에 대비한 군 정신교육 개선에 관한 연구)

  • Lee, Seung Jin;Lee, Young Uk
    • Convergence Security Journal
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    • v.17 no.2
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    • pp.137-144
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    • 2017
  • Mental power, which is the intangible power of soldiers in our security situation, is very important recently. As for the history of war in East and West Korea, intangible combat power is regarded as a key factor that determines the rise and fall of the nation and the victory and defeat of the war. Recently, we are trying to improve the mental education in the military, but we still regard it as formal education, boring education, and time - consuming education. And continues to present the problem. The purpose of this study is to examine the problems of current mental education and to find out the direction of development of cognitive centered mental education. I would like to suggest a direction for fostering a strong group that is suitable for the diversification era.

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

  • Kim, Jeong-Mee;Lee, Jung-Soon
    • Journal of the Korea Fashion and Costume Design Association
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    • v.11 no.3
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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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A Study on the Serial-Parallel Resonant DC/DC Converter for Contactless Power Supply System (비접촉 전원장치에 적용한 직.병렬 공진 DC/DC 컨버터에 관한 연구)

  • Hwang, Gye-Ho;Lee, Bong-Sub;Kim, Dong-Hee
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.22 no.5
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    • pp.31-40
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    • 2008
  • Recently, Contactless Power Supply(CPS) system has been broadly studied as a power supply system for Flat Panel Display(FPD) material transfer equipments. In mass production line, CPS systems on material transfer equipment are applied only in the straight sections with single operating vehicle. The formal CPS system was not adequate for curved section nor multiple operating vehicles. Therefore, this paper presents CPS system that consists of straight and curved section with multiple operation vehicles. The circuit topology of CPS system consists of full bridge configured serial-parallel resonant DC/DC converter. The control method for CPS system consists of duty control method on the primary power supply system to maintain constant resonant current. And the secondary power supply systems of multiple vehicles are self controled to maintain constant output voltage. Practically, the test result of dual vehicles on straight and curved section of material transfer equipments were satisfactory, and proved it's applicability on commercial use.

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

  • Moon, Serng-Bae;Jeong, Woo-Lee
    • Journal of Navigation and Port Research
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    • v.36 no.6
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    • pp.507-512
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    • 2012
  • Korea is the 5th Maritime Power in the world, especially, Busan Metropolitan City is the 3rd Marine City, which has the largest Container port facility and logistic system in the world. However, Busan Citizen's maritime consciousness does not reach that level. This study points out the problems, which are insufficiency of linkage among maritime education institutes, uniformity of ocean education programs, incomplete ocean education system, inadequate management of ocean education programs and shortage of professional instructors. To solve these problems, it is necessary to develop the ocean education modules, establish the ocean education course and put into formal education course to maximize the education effectiveness. This is for the improvement of the reputation as a Marine City Busan, construction the hydrophil culture and propagation of ocean culture.

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

  • 소현정;심화진
    • Journal of the Korean Society of Costume
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    • v.50 no.4
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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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