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        검색결과 208

        201.
        2010.04 KCI 등재 서비스 종료(열람 제한)
        Inbred lines were gained from corn genetic resources collected by our lab and also deveolped by our Corn Breeding Lab. Materials used were eleven hybrids including yellow waxy corn hybrid CNU19 (applied as Daehakchal Gold 1 in 2007). These hybrids were harvested at 30th day after fertilization for antioxidants activity analysis; polyphenol compounds, inhibitory effect of xanthin oxidase activity, catalase activity, superoxide dismutase activity and DPPH radical scavenging activity. Daehakchal Gold 1 among hybrids were midseason variety and higher than check Chalok 1. The ratio of ear height to stem height was low as 50% below. Kernel set ratio was also higher than check hybrid. Among antioxidant analysis, Polyphenol compound was the highest in Daehakchal Gold 1 (CNU 19) as 3.77μg/ml, and CNU 21, CNU 93 and CNU153 including check were high trend compared to others. Xantine oxidase(OX) catalase activity, SOD activity and DPPH radical scavenging effect by using methanol extracts were also comparatively higher in CNU 19 hybrid than others. Besides, catalase activities of Daehakchal Gold 1 hybrid extracted by methanol and haxane were higher than other hybrids. From experiment results, this hybrid was superior to other used hybrids in botanical character, table quality and funtion.
        203.
        2009.12 KCI 등재 서비스 종료(열람 제한)
        The purpose of this thesis is to analyze and evaluate issues and performance of development projects of Gurye Banggwang villages' key projects, especially directly or indirectly related to resident income augmentation. The agricultural products processing factory, the valley resting, the urban and rural exchange center, and the village festival have been closely selected as directly or indirectly related to the resident income. Analysis of survey of resident and two agriculture unions' members led the performance and problem of Banggwang villages' development projects. The income project has the difficulties of recruiting members, lack of professionalism of people in production and marketing of processed products, and conflict between members etc. For this reason, income projects being adopted as the comprehensive rural village development project is often negative. Compare to the other cases, Banggwang village has more reflection of the income project, and has lot of interest by policy makers whether it be pursued successfully. It is too early to evaluate a performance properly because it is the beginning of income projects and the experience are not yet being sufficient. However, the performance is appearing gradually from various sides. For example, dividend of business profits, employment opportunities and sales of agricultural products are developing increasingly. Income projects have strengthens the residents' participation and interest in comprehensive rural village development project and with securing stable funding it will help to maintain the facilities.
        204.
        2007.03 KCI 등재 서비스 종료(열람 제한)
        In this paper, we mainly analyze the performance of two ultra wideband communication systems, the classical Time Hopping Binary Pulse Position Modulation (TH-BPPM) UWB system and the Time Hopping Bipolar Pulse Amplitude Modulation (TH-BPAM) UWB system. The performance of TH-BPPM and TH-BPAM is analyzed in detail under an ideal AWGN channel and a correlation receiver. We use the power spectral density function to get the expression of BER of these two UWB systems. It yields simple and exact formulas relating the performance to the system parameters. The analysis shows that TH-BPPM suffers performance degradation with respect to TH-BPAM. Furthermore, we give the computer simulation of both data and image transmission and our simulation results also prove our theoretical analysis.
        206.
        2006.02 KCI 등재 서비스 종료(열람 제한)
        연구를 통하여 얻어진 수행에러의 원인은 대부분 심리적 요인들이었다. 그러므로 에러를 수정하기 위해서 선수들은 심리기술훈련을 적극적으로 병행할 것을 권고한다.3. 제언지금까지 인간의 수행에러 분석은 전문가 의견에 의존해 왔다. 그래서 인간의 에러확률을 규정하기가 어려웠으며, 인간 에러 자체가 기분, 관심, 성격 등의 인간적 특성에 영향을 많이 받기 때문에 예측가능성도 적었다는 난점이 있었다. 본 연구에서는 선수들의 수행에러 유형과 원인을 질적으로 탐색하였다. 추후의 연구에는 이 연구 자료를 토대로 양적 자료 수집 도구를 제작하고, 통계적 분석을 통하여 보다 더 객관적으로 스포츠 수행에러의 유형과 원인을 확인해야 할 것이다. 양적 연구를 수행할 경우에는 전문가와 초보자 집단, 성별에 따른 집단 비교를 해서 집단 간에 무엇이 다른지를 알게 되고, 구체적인 수행 신뢰도의 영향 요인을 유추할 수 있게 될 것이다.
        208.
        2002.12 KCI 등재 서비스 종료(열람 제한)
        방향구속 전력최소화법(Directionally Constrained Minimization of Power; DCMP)과 제로포싱방법(Zero Forcing; ZF)은 어레이 안테나에 수신된 신호들로부터 채널응답 벡터인 Spatial Signature를 추정하고, 이를 이용하여 최적웨이트(Optimal Weight)를 결정함으로써 어레이 출력 SINR(Signal to Interference plus Noise Ratio)을 향상시킬 수 있는 알고리즘들로 알려져 있다. 본 논문에서는 이동국 주변에서 다중산란된 수신신호들이 어레이 안테나에 수신되는 환경에서 DCMP와 ZF방법의 성능을 분석하였다. 이를 위하여 ESPRIT를 이용하여 수신신호들의 도래각(Direction of Arrival; DOA)과 확산각도(Angular Spread; AS)를 추정하여 Spatial Signature를 구한 후, 그 결과치를 이용하여 DCMP와 ZF방법으로 어레이 출력신호를 합성하였다. 모의 실험을 통하여 어레이 출력 SINR성능을 평가하고 이론적 성능결과와 비교하였다.
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