• 한국작물학회:학술대회논문집
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• 한국작물학회 2017년도 9th Asian Crop Science Association conference
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• pp.201-201
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• 2017

Delayed stem senescence of soybean is a phenomenon of retarded leaf and stem yellowing, where plants maintain a high stem water content and remain chlorophyll in leaf and stem at maturity stage. This phenomenon was one of the most important physiological disease in Japanese soybean cultivation. The occurrence of delayed stem senescence was affected by sowing time. And the most of Japanese field, soybean seeds were sowed in June. June is the rainy season in Japan, and the soil water content of field become higher in this season. In this study, the effects of late sowing (July sowing) on the yield and the occurrence of delayed stem senescence in soybean cultivars Enrei, Tachinagaha and Ayakogane were examined from 2013 to 2015, in the experimental farm at Nihon University (Fujisawa-city, Kanagawa, Japan). The seeds of all cultivars were sowed in June (June-normal density plot) or July (July-normal density plot, July-high density plot and July-super high density plot) in field experiment. The pot experiments were carried out in 2014. In all cultivars, the yield of July-high density plot and July-super high density were higher than that of June normal density plot. And the yield of June-normal density plot was the same as that of July-normal density plot. In all cultivars, the occurrence of delayed stem senescence was increased by seeding in June sowing. And in July sowing plots, no significance difference in the occurrence of delayed stem senescence was observed among density plots. One of reason about the increasing the occurrence of delayed stem senescence in June-normal plot was the increasing of the damaged seeds by bean bugs. Add one of reason about the decreasing of the occurrence of delayed stem senescence of July plots was the decreasing of the amount of cytokinin supplied from root to top and water stress after the flowering time was improved compared with the June plot. In conclusion, the yield of Enrei, Tachinagaha and Ayakogane were not changed by changing the sowing time from June to July. In all cultivars, the occurrence of delayed stem senescence were decreasing by seeding in July.

• 물과 미래
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• 제10권2호
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• pp.81-90
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• 1977

The research is conducted to study the effect of the soil physical properties in the direct sowing culture on the water requirement, growth, and yield of rice with Early-Tongil at the experimental paddy field of the Sangju agri. and seri. junior college in Keyngbuk province from 6th May to 15th September in 1977. The experimental plots are designed with the four plots which are non-irrigated standard (plowing to 15cm), non-irrigated deep lowed (plowing to 25cm), irrigated standard (plowing to 15cm), and irrigated deep plowing plot (plowing to 25cm) and also each plot is repreated four times by the split plot design. The results obtained are summarized as follows: 1) The soil sample was ML to 10cm depth from ground surface and those from 10cm to 20cm depth and from 20cm to 30cm were CL. Each specific gravity was 2. 6, 2. 6 and 2. 7. 2) The weather during culturing period was the sane as the normal year of mean temperature. The precipitation was little and the distribution of it was disordered comparing to normal year but the heavy sunshine gave good effect on ripening. 3) Percolation loss was increased more at the non-irrigated plot than at the irrigated plot, and that of deep-plowed plot was increased more. 4) Grain yield per 10a. of non-irrigated deep plowed plot was 898kg, it was greated than others but there wa no significance. 5) A significant difference in the number of spikelets per panicle was found between nonirrigated plot and irrigated plot, and the number of spiklelets per panicle at the nonirrigated plot was more than that of the irrigated plot. But there was no significance in the other yield components-number of panicle, fertility abd ripening ratio-at the irrigated plot, ut weight of 100 grains was higher at non-irrigated plot. 6) Yield and growth at the deep plowed plot were higher than those of standard plowed plot.

• 정보처리학회논문지D
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• 제10D권5호
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• pp.829-836
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• 2003

소프트웨어 신뢰도 성장 모델은 다양하게 연구되어져 있다. 그러나 이러한 모델에서 정확한 모수를 측정하는 것은 그리 쉽지 않다. 특히 고장 데이터에 대하여 소프트웨어 신뢰도 성장 모델의 추정이 정확히 이루어져야만 모델을 설명하는 모수의 추정도 정확하게 이루어질 수 있다. 이러한 측면에서 테스팅을 통해서 얻어진 소프트웨어의 고장 데이터의 정규확률점수를 구해서 두 개의 값에 대한 플롯을 그려보고 그려진 결과를 이용해서 분포를 예측하여 예측된 분포에 적합한 소프트웨어 신뢰도 성장 모델을 적용한다면 상당히 정확한 테스팅 결과론 얻을 수 있을 것이다. 본 논문에서는 고장 테이터의 플롯을 통한 결과를 통해서 분포를 예측하고 모델을 성능평가 척도에 따라서 모의실험을 하여 그 결과를 통해서 소프트웨어 신뢰도 성장 모델의 적합성을 검정하는 연구이다. 연구결과 고장데이터의 정규점수를 이용한 플롯을 보고 소프트웨어 신뢰도 성장 모델을 예측할 수 있었고 이러한 예측을 통해서 모델 선정한다면 모델의 성능평가에서도 우수함을 확인할 수 있다.

• 대한의용생체공학회:의공학회지
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• 제39권2호
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• pp.69-79
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• 2018

The present study proposes an algorithm that can discriminate between normal subjects and paroxysmal atrial fibrillation (PAF) patients, which is conducted using electrocardiogram (ECG) without PAF events. For this, time-domain features and random forest classifier are used. Time-domain features are obtained from Poincare plot, Lorenz plot of ${\delta}RR$ interval, and morphology analysis. Afterward, three features are selected in total through feature selection. PAF patients and normal subjects are classified using random forest. The classification result showed that sensitivity and specificity were 81.82% and 95.24% respectively, the positive predictive value and negative predictive value were 96.43% and 76.92% respectively, and accuracy was 87.04%. The proposed algorithm had an advantage in terms of the computation requirement compared to existing algorithm, so it has suggested applicability in the more efficient prediction of PAF.

• 한국작물학회지
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• 제31권4호
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• pp.416-419
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• 1986

본 실험은 우리나라 참깨의 단작, 맥후작별 vinyl mulching 재배하에서의 도복방지효과를 보고자 장려품종인 안산깨. 단백깨, 광산깨를 공시하여 개화초기에 75$^{\circ}$ 45$^{\circ}$의 인위도복 처리와 도복방지 처리로서 개화시에 지주를 세워 처리간의 효과를 조사했던 바, 그 결과를 요약하면 다음과 같다. 1. 개화초기에 75$^{\circ}$ 도복은 도복되지 않은 것에 비해 가장 감수정도가 커서 단작에서 75%, 맥후작에서 81% 감수되었다. 2. 개화초기의 무처리한 구에서는 단작직파에서 약간의 자연도복이 되어 18% 감수되었고 맥후작직파에서는 태풍피해로 75%의 큰 감수를 보였다. 3. 단작, 맥후작별 vinyl mulching 재배에서 개화초기에 지주를 세워 재배한 처리는 완전다수였다.

• 품질경영학회지
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• 제34권1호
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• pp.27-33
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• 2006

In this paper, an effective method for identifying influential main effects and interactions in the 2-level factorial designs is suggested by exploiting the resolution V designs developed by Kim(1992). For analysis of such designs, we employ the Bayesian approach for easy and clear identification of influential effects in the half normal probability plot.

• Communications for Statistical Applications and Methods
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• 제5권1호
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• pp.67-75
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• 1998

A new graphical method, named transformed quantize-quantile (TQQ), of a quantize-quantile (Q-Q) Plot is developed for the detection of deviations from the normal distribution. It will be shown that TQQ is helpful for detecting patterns of how points depart from normality. TQQ characteristics of the various kinds of representations are illustrated by a generated sample from a composite of a normal distribution and a clinical example for TQQ is constructed and explained.

• Journal of the Korean Statistical Society
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• 제32권3호
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• pp.235-244
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• 2003

In unreplicated factorial or fractional factorial experiments, the presence of one or more outliers can seriously affect the analysis of variance. Using the normal plot of t residuals to identify outliers in factorial or fractional factorial is an easy method to find these dubious points. In some cases, the t residuals form the identical pairs. One can not tell from the plot which is doubtful. This phenomenon occurs for all minimal designs of resolution IV, which fits the model containing all main effects and some two-factor interactions, whether it is orthogonal or not. In these kinds of models, when we drop one point or two points (not foldover pair) from the fraction, the phenomenon of identical pairs of t residuals may still occur. In this paper, the theoretical background of the phenomenon and its sequences will be investigated in detail.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2009년도 춘계학술대회 논문집
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• pp.479-480
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• 2009

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2008년도 춘계학술대회 논문집
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• pp.671-672
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• 2008