• 제목/요약/키워드: Comparison Research

검색결과 15,459건 처리시간 0.049초

연동환율제도하에서의 외환시장의 효율성 : 실증적 분석 (An Empirical Study of Foreign Exchange Markets for the Floating Rate)

  • 이주희
    • 한국경영과학회지
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    • 제9권2호
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    • pp.34-45
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    • 1984
  • The aim of this study is to investigate efficiency of foreign exchange markets for 8 currencies for the floating rate regime 1974~1982 by comparison of various foreign exchange rate forecasting models’performances. The author presents evidences showing that efficient market hypothesis was not supported.

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Comparison of Control Policy Algorithms for a Optimal System Operations

  • Kim, Chang-Eun
    • 대한산업공학회지
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    • 제18권1호
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    • pp.177-184
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    • 1992
  • The control policy algorithm is examined and compared in this study. This research investigates a two state partially observable Markov chain in which only deterioration can occur and for which the only actions possible are to replace or to live alone. The goal of this research is to compare the computational efficiencies of control policy algorithm. One is Sondik's algorithms and the other one is jump algorithm.

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상용 간접구의 연소형태와 열자극량에 대한 연구 (Investigation of the Temperature Change and Quantity of Heat Stimulus of the Commercial Indirect Moxibustion)

  • 권오상;이상훈;조성진;최광호;최선미;류연희
    • Journal of Acupuncture Research
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    • 제28권6호
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    • pp.139-147
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    • 2011
  • Objectives : In this research, relatively the characteristic in the combustion according to the brands of the commercial indirect moxibustion is compared and the commercial indirect moxibustion is standardized and this result tries to be provided as necessary basic data. Methods : After adhering to the agarose gel surface in which the thermocouple is inserted, 6 kinds of commercial indirect moxibustion were burnt off and the burning behaviour of the commercial indirect device and heat quantity of stimulus was compared. Results : 1. The form of combustion did not have a difference in 6 kinds of commercial indirect moxibustion combustion. 2. As to the miximum temperature, 'Seoam' and 'Dongbang' was higher than 'Baekryoung' and 'Taeyang'. 3. It was long so that the highest temperature reaching time of 'Seoam' could note in comparison with the other brands. And the highest temperature reaching time of 'Baekryoung' was short to note in comparison with the other brands. 4. As to the quantity of heat stimulus, 'Seoam' was the biggest and 'Baekryoung' was the smallest. 5. The quantity of heat stimulus of 'Dongbang' was the most stable. Conclusions : In this research, relatively the form of combustion of 6 kinds of commercial indirect moxibustion and heat quantity of stimulus were compared. It desires to anticipate the result that it makes the skin.

Influence of Sustain Voltage on Wall Charge and Wall Voltage Characteristics in AC-PDPs

  • Kim, T.Y.;Cho, T.S.;Kim, S.S.;Cho, D.S.;Kim, J.G.;Ahn, J.C.;Jung, Y.H.;Lim, J.Y.;Jung, J.M.;Ko, J.J.;Kim, D.I.;Lee, C.W.;Seo, Y.;Cho, G.S.;Choi, E.H.
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2000년도 제1회 학술대회 논문집
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    • pp.119-120
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    • 2000
  • Influences of sustain voltage on wall charges and wall voltages are experimentally investigated in surface AC plasma display panels(AC-PDPs), in which electrode gap and width are $80\;{\mu}m$ and $270\;{\mu}m$, respectively. The filling gas is Ne-Xe gas mixture, and total pressures 300 Torr. Also it is found that the more amount of Xe mixing ratio makes the less wall charge and voltage for sustain voltage ranged from 140 V to 222 V. The response time has been delayed by adding a small amount of Xe to Ne in comparison with that without Xe. It is also found that the wall charge and voltage are reduced by adding a small amount of Xe to Ne in comparison with those without Xe.

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