• Ecology and Resilient Infrastructure
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• v.3 no.1
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• pp.8-13
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• 2016

This study investigated the effects of a spur dike on the development processes, the migration, and the wave length of alternate bars with laboratory experiments. The bar wave length was shown to be shorter as the spur dikes got longer. The forcing effects of a long spur dike on the behavior of alternate bars were stronger than those of a shorter one. However, the bar height was not affected by the variation of the length of a spur dike. The bar migration speed was in inverse proportion to the bar wave length.

• The Korean Journal of Applied Statistics
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• v.5 no.1
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• pp.19-28
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• 1992

In this paper, minimal balanced $2^t$ fractional factorial designs which permit the estimation of main effects and 2-factor interactions are developed by using a partially balanced array. Such designs are characterized by a minimum number of runs and some balancedness property of the variance-covariance matrix of the estimates. In addition to describing the designs, optimality criteria are discussed and the trace-optimal designs are presented. The proposed designs are especially useful in Taguchi method, where we need to investigate up to 2-factor interactions of the control factors.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.24 no.2
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• pp.51-55
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• 1979

The effects of vernalization and darkness on flower initiation were reviewed by using naked barley varieties. The dark effects were pronounced on flower induction even at 25$^{\circ}C$. There were no differences in flowering responses among varieties. The effects of vernalization and darkness combined with 25$^{\circ}C$were 100% and 60% respectively which showed a significant difference. When the alternation of darkness with light was taken as first and last the flowering rate was 92 percent. When it was intercalated by light treatments the flowering rate was 91 per cent. Thus the effects of vernalization and darkness seems to differ.

• Journal of Korea Water Resources Association
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• v.47 no.1
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• pp.37-47
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• 2014

This study examines the processes and the behaviour characteristics of forcing bars in channels with periodic variable width in the alternate and braided regimes by using a two dimensional numerical model. The wavelength and the migration speed decrease as the amplitude of variable width increases. The forcing effects of the width variation on the alternate bars is stronger than those on the braided bars. The bar migration speed increases as the dimensionless amplitude in the braided regime is 0.25. However, the migration speed is abruptly decreased as the amplitude in it was larger than 0.25. The bar migration speed increases in the alternates bar regime as the dimensionless wavelength increases. However, the migration speed decreases around 1 of the wavelength. As the bar wavelength and the variable width wavelength coincide, the bars don't migrate downstream by the strong forcing effects on the bars due to the suppression by the width variation.

• 한국HCI학회:학술대회논문집
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• 2006.02a
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• pp.425-430
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• 2006

현재 대부분의 데스크탑 시스템에서 사용자는 단지 하나의 마우스를 사용해서 컴퓨터와 상호작용을 하고 있다. 본 논문에서는 각각의 손으로 동시에 두 개의 마우스들을 사용할 때, 작업 성능에 대한 효과를 살펴보고자 한다. 본 논문에서의 실험에서는 데스크탑 환경에 기반한 간단한 게임 (날아오는 총알 피하기와 잡기)에서 세 개의 독립 변수들로 한 손 또는 양 손 사용 여부, 주위 상황(총알)의 변화 속도, 그리고 두 커서(캐릭터)들간의 거리 차이를 사용하고, 종속 변수로 사용자의 작업 성능(부딪친 총알 개수)을 측정하였다. 실험 결과에 의하면, 두 커서 (또는 두 캐릭터)와의 동시 상호작용이 필요할 때 한 손보다는 양 손을 사용할 때의 작업 성능이 통계적으로 유의하게 좋았고, 두 커서 사이에 거리가 멀수록, 그리고 총알의 속도가 느릴수록 작업 성능은 유의하게 좋았다. 독립 변수들 사이에는 서로 유의한 교호작용이 나타나지 않았는데, 이것은 작업 성능에 대한 양손의 효과가 다른 독립 변수들의 각 레벨과는 상관이 없었다는 것을 의미한다.

• Korean Security Journal
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• no.22
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• pp.231-258
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• 2010

A study apartment house inhabitants of to, crime prevention effort is done satisfaction analysis and that deduce design plan of CPTED that can overcome safe life space embodiment and criminal fear from crime in Juminin viewpoint through atomize group's interaction by background fantast. Is positive because factor analysis wave and satisfaction index of deduce universe (Total group) 8 factor are presented more than all 0, and quite was expose by level that is worth accommodating. Satisfaction index of The secondary design group (Group1) 8 factor is positive because is presented more than all 0, and mechanical access control, mechanical surveillance is level that is worth accommodating quite, and level that is proper in remainder 6 dimension appear. Can know that 1 The secondary design group(Group2) is expose by level that satisfaction characteristic of 8 factor can be presented more than all 0 and appeared positively, and accommodate quite in all dimensions. Result that analyze Two-way ANOVA satisfaction difference of environment design of group by satisfaction of the primary and the secondary design group is high in 8 all dimensions of CPTED, and satisfaction by appeared satisfaction high in group less than natural access control, 2 years of natural surveillance, and reciprocal action effect that go with group is high satisfaction in 2 years low in The secondary design group more than the primary and the secondary design group of systematic access control and natural access control, and the primary and the secondary design group appeared high in subgroup of 2 remainders. Satisfaction difference by group by crime prevention effort satisfaction of the primary and the secondary design group is high in 8 all dimensions of CPTED, and satisfaction difference by crime prevention effort appeared satisfaction high in 'A prize' group to The secondary design group, and reciprocal action efficiency is high in 'A prize' group in The secondary design group more than the primary and the secondary design group in mechanical access control, systematic access control, natural access control, territoriality reinforcement, and satisfaction of 'Between' and 'Very' group appeared high in the primary and the secondary design group.

• Proceedings of the Korea Contents Association Conference
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• 2011.05a
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• pp.119-120
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• 2011

본 연구는 중소기업의 글로벌 혁신역량에 관련 선행연구를 조사분석한 연구이다. 국내외 중소기업의 글로벌혁신역량에 관한 선행연구를 광범위하게 조사한 후 중소기업의 글로벌 혁신역량에 영향을 미치는 대표적인 잠재변수를 선정한다. 각 잠재변수별로 유의적으로 판명된 지표를 분석하여 기업내부역량 중 글로벌혁신역량에 중요한 요인인 CEO역량, 기술역량, 마케팅역량, 생산역량, 인적자원역량, 재무역량, 네트워크역량으로 재분류한다. 향후 잠재변수사이의 상관관계를 분석하여 상호교호작용효과를 배제한 잠재변수별 순효과(net effect)를 분석하고자 한다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.9
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• pp.375-386
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• 2016

This study was conducted to investigate the effectiveness of a nonviolent communication program on nurse's interpersonal competence, job stress and spiritual wellness. This study was a inequality similar to the control group experimental design study of repeated measurements before and after. The data for this study were collected from June 1 to October 20, 2013 from 29 clinical nurses. The self-administered questionnaires used consisted of questions regarding general characteristics, interpersonal competence, job stress and spiritual wellness. The results were: 1. For interpersonal competence, the interaction between time and group was significant (F = 7.726, p = 0.002). 2. For job stress analysis, the interaction between time and group was not significant (F = 0.142, p = 0.851). 3. For spiritual wellness, the interaction between time and group was significant (F = 31.355, p < .001). These results suggest that the nonviolent communication program had a positive effect on rejected clinical nurse's interpersonal competence and spiritual wellness, but not on job stress. A follow-up replication study will be necessary.

• Korean Journal of Soil Science and Fertilizer
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• v.7 no.1
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• pp.43-47
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• 1974

Arsenic toxicity of rice and the interaction between As and Zn were studied in a greenhouse experiment. The symptom of As toxicity of rice was the growth retardation of tops and roots accompanied by wilting. The toxicity was observed even on the 1 ppm arsenic treated soils. Zinc applictiaon reduced As toxicity but it did not depress the As uptake by rice, while As reduced the Zn uptake by rice. There-fore, the applied Zn apparantly conpensated for the depressed Zn up-take due to As toxicity. Iron deficiency was observed during the experiment, and this was probably due to the relatively high soil reaction, pH of the Crowley silt loam.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.11 no.2
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• pp.169-174
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• 2018

In general, the methods of the analysis of variance(ANOVA) for the continuous data and the chi-square test for the discrete data are used for statistical analysis of the effect and the association. In multidimensional data, analysis of hierarchical structure is required and statistical linear model is adopted. The structure of the linear model requires the normality of the data. A multidimensional categorical data analysis methods are used for causal relations, interactions, and correlation analysis. In this paper, Bayesian network model using probability distribution is proposed to reduce analysis procedure and analyze interactions and causal relationships in categorical data analysis.