• 제목/요약/키워드: A Comparative Study

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Application of Economic Risk Measures for a Comparative Evaluation of Less and More Mature Nuclear Reactor Technologies

  • Andrianov, A.A.;Andrianova, O.N.;Kuptsov, I.S.;Svetlichny, L.I.;Utianskaya, T.V.
    • 방사성폐기물학회지
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    • 제16권4호
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    • pp.431-439
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    • 2018
  • Less mature nuclear reactor technologies are characterized by a greater uncertainty due to insufficient detailed design information, operational data, cost information, etc., but the expected performance characteristics of less mature options are usually more attractive in comparison with more mature ones. The greater uncertainty is, the higher economic risks associated with the project realization will be. Within a comparative evaluation of less and more mature nuclear reactor technologies, it is necessary to apply economic risk measures to balance judgments regarding the economic performance of less and more mature options. Assessments of any risk metrics involve calculating different characteristics of probability distributions of associated economic performance indicators and applying the Monte-Carlo method. This paper considers the applicability of statistical risk measures for different economic performance indicators within a trial case study on a comparative evaluation of less and more mature unspecified LWRs. The presented case study demonstrates the main trends associated with the incorporation of economic risk metrics into a comparative evaluation of less and more mature nuclear reactor technologies.

남한과 일본의 임연군란 비교 연구 (A Comparative Study on Mantle Communities in South Korea and Japan)

  • 정용규;김종원
    • The Korean Journal of Ecology
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    • 제21권1호
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    • pp.81-88
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    • 1998
  • A comparative analysis on mantle communities in South Korea and Japan was carried out. The study was accomplished by using syntaxa and hierarchical system of mantle communities in South Korea and Japan through Zurich-Montpellier School's method, and also achieved comparison on syntaxonomy, synecology, syndynamics and syngeography between two countries. Mantle communities in South Korea and Japan were defined to the Rosetea multilorae representing mantle vegetation in Northeast Asia. Mantle communities in Japan showed much diverse than those in South Korea. Mantle communities in South Korea and Japan considerably corresponded between the two. Results of the current study will make possible to accumulate qualitative $\bullet$quantitative informations on mantle communities in Northeast Asia. And the subsidiary knowledge from this study will provide practical data on comparative analysis about whole mantle communities in Northeast Asia.

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한국 원작영화와 중국 리메이크영화의 문화차원 비교연구 (A Comparative Study of Cultural Dimensions between Korean Original Films and Chinese Remake Films)

  • 오연
    • 문화기술의 융합
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    • 제5권4호
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    • pp.339-347
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    • 2019
  • 이 논문은 최근 아시아, 특히 중국에서 한국영화를 빈번히 리메이크하는 현상에 주목해 한국 원작영화와 중국 리메이크영화의 텍스트 분석과 비교를 통해 각각의 영화 속에서 두 나라의 문화차원들을 추출하여 비교 분석한 연구이다. 특히 이 논문에서는 한국의 스릴러 영화인 <블라인드>와 중국에서 리메이크한 작품 <나는 증인이다>의 서사구를 분석하고, 그 동안 비교문화연구에서 활용되어 온 네덜란드의 조직심리학자 홉스테드(Greet Hofstede)의 문화차원 연구를 바탕으로, 두 영화 안에 함축된 문화차원을 비교했다.

IIM을 적용한 소집단 탐구학습이 초등학생들의 과학 탐구능력 및 과학적 태도에 미치는 효과 (The Effects of Small Group Inquiry Activities Using IIM on Science Process Skills and Scientific Attitudes in Elementary students)

  • 박윤희;이하룡;문성배
    • 대한지구과학교육학회지
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    • 제3권2호
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    • pp.148-157
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    • 2010
  • The purpose of this study is to examine the effect of small group inquiry activities using IIM on the science process skills and scientific attitudes of students in higher elementary grades. To verify research problems, the subjects of this study were fifth-grade students selected from two classes of an elementary school located in Busan : the research group was composed of thirty students who participated in small group inquiry activities using IIM teaching model situation, and the other was composed of thirty students(comparative group) who participated in a teacher map- based learning situation. For six weeks, the small group inquiry activities using IIM were executed in the research group, while the teacher-map based instruction was conducted in the comparative group Test showed the following results: First, the research group showed a significant improvement in their science process skills compared to the comparative group. Second, the research group did not show a significant improvement in their scientific attitudes compared to the comparative group. In conclusion, small group inquiry activities using the IIM teaching model was more effective than the teacher map-based teaching model on science process skills. However, since the study has a limit on the object of the study and the applied curriculum, the additional studies need to be conducted with an extended comparative group and curriculum.

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조선시대 양반계층의 주택과 가구의 조형적 연계성에 대한 비교연구 (A Comparative Study on the Formative Relation of Yangban's Residential Architecture and Furniture in the Chosun Dynasty)

  • 김진옥
    • 한국실내디자인학회논문집
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    • 제15권5호
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    • pp.3-11
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    • 2006
  • Our residential architecture and furniture have developed their unique formative characteristics under the influence of the natural environment as well as under socio-cultural influence. In order to understand such characteristics of our residential architecture and furniture, we need to clarify similarities and differences through comparative study from various perspectives. The present study purposed to examine the effects of mutual relations among Yangban's residential architecture and their furniture in the Chosun Dynasty on their formative characteristics, to identify the formative characteristics of shapes, materials, colors, patterns and decorations found in the residential architecture and their furniture, and to make a comparative analysis of the formative characteristics of the residential buildings and their furniture. This research will provide a ground for reinterpreting our culture and help to apply Korean culture identity to today's interior and furniture design.

오염된 절연재료의 트래킹 특성에 관한 연구 (A Study on the Tracking Characteristics of Contaminated Insulating Materials)

  • 옥경재;이춘하
    • 한국화재소방학회논문지
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    • 제21권3호
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    • pp.97-103
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    • 2007
  • 본 실험은 오염된 절연재료의 트래킹 특성을 연구하였다. 오염된 절연재료의 트래킹에 의한 절연파괴 특성 분석은 IEC 60112를 통하여 수행하였다. 연구결과, 오염된 절연재료의 트래킹 특성은 다음과 같다. (a) 오염된 절연재료의 경우 정상시료 보다 비교트래킹지수(comparative tracking index, CTI)가 낮게 나타났다. (b) 오염된 절연재료의 최초 탄화흔 발생시간 및 탄화도전로 형성 시간이 정상시료 보다 빠르게 나타났다.

A comparative study between trapezoidal combined footings and T-shaped combined footings

  • Garcia-Galvan, Marylu;Luevanos-Rojas, Arnulfo;Lopez-Chavarria, Sandra;Medina-Elizondo, Manuel;Rivera-Mendoza, Jose Benito
    • Coupled systems mechanics
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    • 제11권3호
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    • pp.233-257
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    • 2022
  • This work presents a comparative study between two different models: trapezoidal and T-shaped combined footings. The comparative study between trapezoidal and T-shaped combined footings presented in this paper generatesresultsthat have an unparalleled accuracy for all foundation engineering problems. The main part of this research is to obtain the optimal area, reinforcing steel, and thickness of the trapezoidal and T-shaped combined footings using the new models. The comparison is made for two trapezoidal combined footings and two T-shaped combined footings ofreinforced concrete subjected to the same load.Themain findings are: themodelfortrapezoidal combined footings can be used for rectangular and triangular, and the T-shaped combined footings can be used for rectangular. The structure of the paper is asfollowsfirst a very complete state of the art with extensive referencesthat describesthe methodology used for the different models clearly, presents different numerical examples, results and at the end conclusions.

PID제어계를 위한 누적방지기법의 비교 (A Comparative Study on Anti-windup Schemes for PID Control Systems)

  • 류지수;허학범;박태건;이기상
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2000년도 제15차 학술회의논문집
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    • pp.127-127
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    • 2000
  • The anti-windup schemes developed so far are summarized and the similarities/differences schemes are discussed. The anti-windup schemes are applied to a DC servomotor control system with PID controller to perform comparative study and sensitivity analysis. Based on those results, some criteria for choosing anti-windup scheme are suggested. The results of this study provide a very useful guideline for selecting and designing the anti-windup scheme for various types of PID control systems.

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한국 건축법 방화관련 규정의 변천과정에 관한 문헌적 고찰 (A comparative Study on the Fire Resistance Design Standard of Buildings)

  • 김세종;이재영;권영진
    • 한국화재소방학회:학술대회논문집
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    • 한국화재소방학회 2008년도 춘계학술논문발표회 논문집
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    • pp.353-356
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    • 2008
  • Recently, high-rise buildings have been increased with the development of economy in domestic, and theses fire riskiness has been brought up. However, fireproof design standards is not enough. So, this study was to make a comparative study on the fire resistance design standards of building in domestic and foreign. As a results, it is necessary that fireproof design standards is revised.

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스트레치 소재를 사용한 현대무용 타이츠팬츠원형 설계 (Designing of the pattern of Tight Pants, an article of Modern Dancewear, Made of Stretchy Materials)

  • 김순분;곽명숙;박채련
    • 대한가정학회지
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    • 제42권4호
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    • pp.45-54
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    • 2004
  • The Purpose of this study was to research and develop a Pattern of tight Pants, featuring excellent appearance, movement and suitability for the lower body, which are widely used as a basic item for modem dance, aerobic dance and dance sports, and to provide manufacturing data for the pants. This study was carried out with 118 People who majored in dance, using questionnaires asking questions about their understanding and preference of dancewear The experimental dancewear was produced, using 5 kinds of patterns for tight pants on the market, to find out the most excellent pattern in appearance and movement performance. Then, the most excellent pattern was again improved to produce a pattern for this study. The result of this study is summarized as follows. 1. Regarding shops where they purchased dancewear exclusive shops accounted for 97%, their average price was ₩30,000 to ₩50,000(51%), and dancewear separated between the upper and lower halves was most preferred(56%). Cotton span was preferably used for a dancewear material(71%), and their dissatisfaction of a fit accounted for 38% which appeared to be highly unsatisfied with its suitability. 2. When S types of experimental dancewear prepared with a comparative pattern were tested by the senses, it was shown that the comparative pattern of experimental wear number 5 with a strip w3s excellent in movement functions and appearance. 3. The basic items necessary to design the tight pants' study pattern were categorized into waist circumference, hip circumference, crotch depth and slacks length. The shrinkages of 15% in width, 10% in crotch length md 20% in inside leg length were applied, respectively, referring to previous studies and the experimental dancewears' comparative patterns. 4. When the improved study pattern for this study was tested by the senses, it showed higher scores in movement functions and appearance than the comparative pattern did, which confirmed the study pattern's improvement of functions and appearance.