• 제목/요약/키워드: Complementary distribution

검색결과 182건 처리시간 0.028초

Reliability and ratio in exponentiated complementary power function distribution

  • Moon, Yeung-Gil;Lee, Chang-Soo;Ryu, Se-Gi
    • Journal of the Korean Data and Information Science Society
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    • 제20권5호
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    • pp.955-960
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    • 2009
  • As we shall dene an exponentiated complementary power function distribution, we shall consider moments, hazard rate, and inference for parameter in the distribution. And we shall consider an inference of the reliability and distributions for the quotient and the ratio in two independent exponentiated complementary power function random variables.

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Semantic Alternation of Korean Case Markers '에e' and '에게ege', and '에서eseo' and '에게서 egeseo'

  • Kim, Jungnam;Shim, Yanghee
    • 비교문화연구
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    • 제36권
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    • pp.271-291
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    • 2014
  • In this paper, we maintain that case makers '에e' and '에게ege', and '에서eseo' and '에게서egeseo' are not two separate morphemes but are simply allomorphs of the same morphemes respectively. When '에e' and '에게ege' are used as a dative marker, they show exactly the same semantic function and are in complementary distribution in relation to the semantic features of their preceding noun; that is, if the preceding noun is an animate noun, '에게ege' is used and '에e' is used if not. Also, '에게서egeseo' and '에서eseo' as ablative and locative case makers show exactly the same semantic function and show complementary distribution depending on whether the preceding noun is animate or non-animate. Therefore, we assume that these markers are semantically conditioned allomorphs.

데이터베이스 시스템을 이용한 탄소강의 피로강도 및 수명분포 (A Study on the Fatigue Strength and Life Distribution of Carbon Steel Using the Database System)

  • 김정규;문준호;김도식
    • 한국강구조학회 논문집
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    • 제10권1호통권34호
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    • pp.37-45
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    • 1998
  • 기계 및 구조물의 안전성과 신뢰성 평가를 위하여 금속재료의 피로강도 데이터베이스 시스템을 구축하고, 이를 이용하여 금속재료의 피로수명 분포특성을 검토하였다. 종속도를 이용하여 구성한 관계형 피로강도 데이터베이스 시스템은 일련의 데이터 관리 및 해석작업을 효율적으로 수행하였다. 또한 Robust 방법과 보상오차함수(complementary error function)를 이용한 3-파라미터 Weibull분포의 파라미터 추정법 및 비파손확률를 검토하기 위하여 제안된 새로운 기준식의 타당성을 검토하였다. 조합분포모델을 이용하여 부하응력비와 Weibull분포의 파라미터 항으로 나타낸 피로수명 분포식은 탄소강의 P-R-N 특성을 해석함에 있어서 좋은 결과를 보였다.

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간호학생의 보완대체요법에 대한 태도 연구 - Q 방법론적 접근 - (Nursing Students' Attitudes towards Complementary Alternative Therapy - Q methodological approach -)

  • 황윤영
    • 한국간호교육학회지
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    • 제10권2호
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    • pp.297-307
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    • 2004
  • This study aims to identify the types and type-specific characteristics of subjectivity on complementary alternative therapy of nursing students using Q-methodology and to provide them as basic materials for nursing education. Q-methodology provides a scientific method for identifying perception structures that exist within certain individuals or groups. Thirty C college nursing students' classified 35 selected Q-statements into 9 points standard, according to the level of agreement or disagreement by forced normal distribution. The collected data was analyzed by using a QUNAL PC program. Resultingly, the attitude of nursing students regarding complementary alternative therapy was divided into three types. Type 1 is positive recognition. The students who think the therapy contributes to maintaining and improving health, and is a way to protect human body and improve welfare by enhancing immunity. Type 2 is objective acceptance. The students who think the complementary alternative therapy is effective when it is properly used for specific constitutions in discussion with medical teams after its effects are scientifically reviewed. Type 3 is popularity consideration. The students who put focus on its popular use and regard the therapy as very useful for not only patients but also ordinary healthy people because it is based on the natural and human approach. In conclusion, proposed are studies on influence factor of nursing students' awareness about the complementary alternative therapy and reviews on the effects of the complementary alternative therapy that is applied as nursing intervention.

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Complementary Power Control of the Bipolar-type Low Voltage DC Distribution System

  • Byeon, Gilsung;Hwang, Chul-Sang;Jeon, Jin-Hong;Kim, Seul-Ki;Kim, Jong-Yul;Kim, Kisuk;Ko, Bokyung;Kim, Eung-Sang
    • Journal of Electrical Engineering and Technology
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    • 제10권3호
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    • pp.786-794
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    • 2015
  • In this paper, a new power control strategy for the bipolar-type low voltage direct current (LVDC) distribution system is being proposed. The dc distribution system is considered as an innovative system according to the increase of dc loads and dc output type distribution energy resources (DERs) such as photovoltaic (PV) systems and energy storage systems (ESS). Since the dc distribution system has many advantages such as feasible connection of DERs, reduction of conversion losses between dc output sources and loads, no reactive power issues, it is very suitable solution for new type buildings and residences interfaced with DERs and ESSs. In the bipolar-type, if it has each grid-interfaced converter, both sides (upper, lower-side) can be operated individually or collectively. A complementary power control strategy using two ESSs in both sides for effective and reliable operation is proposed in this paper. Detailed power control methods of the host controller and local controllers are described. To verify the performances of the proposed control strategy, simulation analysis using PSCAD/EMTDC is being performed where the results show that the proposed strategy provides efficient operations and can be applied to the bipolar-type dc distribution system.

The Automobile Distribution Industry's Trade Structure Analysis and Comparison between Japan and USA

  • Lee, Jae-Sung
    • 유통과학연구
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    • 제12권7호
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    • pp.37-44
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    • 2014
  • Purpose - This study reviews changes in the automobile export-import structure between Japan and USA through a trade related index, and focuses on analyzing comparative advantage based on time-series analysis of statistical data (2000, 2005, and 2012) by using the trade intensity index (TII), revealed comparative advantage index (RCA), and trade specialization index (TSI). Research design, data, and methodology - Japan and USA have mutually complementary economic phase characteristics. Therefore, this study aimed to understand each country's trade structure, to strengthen Japan-USA economic cooperation and aimed to examine trade drawbacks to analyze causes affecting trade and ways to improve it to facilitate its expansion. Results - These two economies have immense complementary potential and, further, significantly greater profits are assured from trade between them, as compared to any other integrated regional economic community. Conclusion - Economic cooperation between these two powers can provide opportunities for industry technology cooperation through partnerships against the backdrop of accelerating competition among industries, by identifying opportunities to secure stable resource suppliers and enlarge the export market.

Reliability P(Y

  • 우정수
    • 한국데이터정보과학회:학술대회논문집
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    • 한국데이터정보과학회 2006년도 추계 학술발표회 논문집
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    • pp.37-42
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    • 2006
  • We shall consider an inference of the reliability P(Y

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다수의 지상국(GS)을 이용한 무인 항공기(UAV) 추적 FDOA 기반의 CRLB 성능 분석 연구 (Cramér-Rao Lower Bound (CRLB) Analysis for Unmanned Aerial Vehicle (UAV) Tracking with Randomly Distributed Ground Stations Using FDOA Measurements)

  • 민병윤;안찬호;홍석준;장진상;김동구
    • 한국항행학회논문지
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    • 제15권2호
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    • pp.234-240
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    • 2011
  • 본 논문에서는 다수의 지상국을 이용하여 얻은 FDOA(Frequency Difference of Arrival) 측정값을 통해서 UAV(Unmanned Aerial Vehicle; 무인항공기) 추적 알고리즘의 이론적 경계인 CRLB(Cram$\acute{e}$r-Rao Lower Bound)를 분석하였다. 첫째로 FDOA 측정값을 시간을 두고 모았을 때 CRLB에 주는 영향을 관찰하였고, 둘째로 지상국이 일정한 범위 안에서 무작위적 위치를 가질 때 그 범위에 따른 FDOA의 측정값이 어떤 특성을 갖는지 확인할 수 있었다. 또한 CRLB의 크기를 측정하여 CCDF(Complementary Cumulative Distribution Function)로 나타내어 성능을 비교, 분석하였다.

아프리카에 대한 공적개발원조 및 외국인직접투자의 유치요인 (Attraction Factors of Official Development Assistance (ODA) and Foreign Direct Investment(FDI) in African Countries)

  • 한동근;박병규
    • 무역학회지
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    • 제46권1호
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    • pp.39-57
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    • 2021
  • Developing countries are in competition to attract ODA and FDI in an effort to overcome poverty and development. This study tries to identify factors influencing the distribution of ODA and FDI resources and analyzes if ODA and FDI are in complementary relationship. We use a panel data for 53 African countries during early and middle of 2000 period. Factors affecting the ODA distribution include per capita GDP, physical infrastructure, good institutions of receiving countries. FDI was found to be positively affected by market size, trade openness, human capital accumulation, business-friendly regulatory environment. The impact of ODA is believed to be more effective and sustainable if it has a complementary relationship with FDI. Our result, however, did not confirmed the complementarity relation between the two.

Parameter Estimations in the Complementary Weibull Reliability Model

  • Sarhan Ammar M.;El-Gohary Awad
    • International Journal of Reliability and Applications
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    • 제6권1호
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    • pp.41-51
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    • 2005
  • The Bayes estimators of the parameters included in the complementary Weibull reliability model are obtained. In the process of deriving Bayes estimators, the scale and shape parameters of the complementary Weibull distribution are considered to be independent random variables having prior exponential distributions. The maximum likelihood estimators of the desired parameters are derived. Further, the least square estimators are obtained in closed forms. Simulation study is made using Monte Carlo method to make a comparison among the obtained estimators. The comparison is made by computing the root mean squared errors associated to each point estimation. Based on the numerical study, the Bayes procedure seems better than the maximum likelihood and least square procedures in the sense of having smaller root mean squared errors.

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