• 한국초등과학교육학회지:초등과학교육
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• 제33권4호
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• pp.634-645
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• 2014

The purpose of this study was to analyze the teachers' stages of concern and levels of use on STEAM of the 2009 elementary science curriculum and to support effective application according to the teachers' stages and levels. Therefore this study was conducted by the Concerns-Based Adoption Model (CBAM). The total number of 113 teachers participated in this study. The results of the study were as follows: First, most teachers were in the stage of awareness. Second, the results of the chi-square test showed that the stages were significantly different according to their positions, training experiences and final degrees (p<.05). Third, about half of teachers were in the level of orientation and preparation. The others were in the level of routine, integration and renewal. Fourth, the results of the chi-square test showed that the levels were significantly different with the categories of their gender, position, age, career in education, workplace and training experience (p<.05). Fifth, the correlation coefficient between stages of concern and levels of use (r=.59) was relatively high (p<.05). Based on these results, we suggested that the support of application should be provided according to the teachers' stages and levels.

• 한국치위생학회지
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• 제16권6호
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• pp.1057-1066
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• 2016

Objectives: The purpose of the study was to investigate the correlation between personal temperament, dental visit, and dental fear among adults. Methods: A self-reported questionnaire was completed by 400 adults visiting dental clinics from April to June, 2016. The questionnaire consisted of general characteristics of the subjects, dental fear, and temperament. Data were analyzed by t test, chi-square test, chi-square test, and pearson's correlation analysis using SPSS v. 23.0. Results: The first impression of dental clinics had an impact on dental fear (p<0.001). The negative image on the dental clinics increased dental fear of the visitors. There was a significant difference between the purpose of dental visit and dentla fear. Conclusions: The positive image of the dental clinics can solve the dental fear due to treatment in the adults. The dental consumers should try to have the comfortable attitude toward dental clinic in case of visit.

• 복식문화연구
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• 제27권6호
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• pp.569-581
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• 2019

This study investigated differences in cosmetic buying behavior and personal characteristics between cosmetic involvement groups. Cosmetics buying behavior refers to reason for using cosmetics, use of information sources, selection criteria, place of purchase, use/non-use of cosmetics, purchase propensity, purchase frequency, purchase amount, and satisfaction with cosmetics. Personal characteristic contains pursuing image, age, residence area, job, and average household monthly income. Data was collected from 5-10 December 2016, from 308 females in their 20s using an internet survey. The analysis included descriptive statistics, t-tests, Mann-Whitney U tests, and chi-square tests. The respondents were divided into two groups (a high cosmetic involvement group and a low cosmetic involvement group) according to the degree of cosmetic involvement. The results of t-tests revealed significant differences between groups in terms of reasons for using cosmetics, use of information sources, selection criteria, purchase frequency, place of purchase, use/non-use of cosmetics, and satisfaction with cosmetics. The results of Mann-Whitney U tests highlighted a significant difference in purchase frequency between both groups. The results of chi-square tests indicated significant differences in purchase frequency, purchase amount, pursuing image, and average household monthly income. However, no significant differences were evident in terms of purchase propensity, age, job, and area of residence between groups.

• ETRI Journal
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• 제33권2호
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• pp.219-229
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• 2011

In this paper, we propose a transformation scheme used to analyze online gaming traffic properties and develop a traffic model. We analyze the packet size and the inter departure time distributions of a popular first-person shooter game (Left 4 Dead) and a massively multiplayer online role-playing game (World of Warcraft) in order to compare them to the existing scheme. Recent online gaming traffic is erratically distributed, so it is very difficult to analyze. Therefore, our research focuses on a transformation scheme to obtain new smooth patterns from a messy dataset. It extracts relatively heavy-weighted density data and then transforms them into a corresponding dataset domain to obtain a simplified graph. We compare the analytical model histogram, the chi-square statistic, and the quantile-quantile plot of the proposed scheme to an existing scheme. The results show that the proposed scheme demonstrates a good fit in all parts. The chi-square statistic of our scheme for the Left 4 Dead packet size distribution is less than one ninth of the existing one when dealing with erratic traffic.

• 디지털융복합연구
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• 제17권12호
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• pp.535-543
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• 2019

본 연구는 손상환자의 미충족의료 관련요인을 총괄적으로 조사·파악하여 미충족의료에 관련이 있는 요인을 제시하기 위하여 시행되었으며, 연구대상은 국민건강영양조사에 응답한 손상 환자 중 미충족의료 경험이 있는 2169명을 대상으로 시행하였다. 연구방법은 빈도 백분율, Chi-square test, 다중회귀분석을 사용하였고, 이는 SPSS/WIN 23.0 Program를 이용하여 분석하였다. 연구결과, 스트레스가 있을수록, 우울감을 느낄수록, 자살생각을 할수록 미충족의료와 관련이 있는 요인으로 나타났으며, 이는 향후 미충족의료가 발생하지 않도록 의료이용 제도를 개선하고 정책 결정을 하는 데 기여할 수 있을 것으로 사료된다.

• 한국정보통신학회논문지
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• 제4권1호
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• pp.89-96
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• 2000

본 논문에서는 정방형 도파관을 이용한 커러게이트 편파기의 설계이론에 대해 제안하였다. 도파관의 불연속 경계면의 특성을 해석하고 낮은 정재파비를 얻기 위해 수정된 $TE^\chi_mn$모드 정합법과 커러게이트 지수함수를 편파기 설계에 적용하였다. 그 결과 11.7-15.8GHz 대역에서 $90^{\circ}$에 가까운 위상천이 각을 갖는 광대역 특성을 얻을 수 있었다. 특히, 11.7-12.0GHz, 14.5-14.8GHz 주파수 대역에서 위상천이 각과 최대 정재파비 및 축비가 각각 $90^{\circ},\pm1^{\circ}$, 1.03, 1.0001로 나타나 300MHz의 대역폭을 갖는 편파기를 설계할 수 있었다.

• 재활복지공학회논문지
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• 제6권1호
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• pp.75-81
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• 2012

본 연구는 자폐성 장애 아동의 승마재활 치료에 가장 영향을 미치는 학부모의 인식은 어느 정도이며 치료효과에 대한 목적의식은 어떠한지 또한 앞으로 재활승마 치료에 대해 가지는 기대에 대해 알아보고자 하였다. 자폐성 장애 아동의 부모로 100명을 연구대상으로 설문지를 연구도구로 사용하였다. 분석방법은 빈도분석(Frequency Analysis), 교차분석Chi-square Analysis)을 활용하여 각각 분석하였다. 재활승마 치료에 대한 학부모의 인지도에서 재활승마에 대한 인식이 있고, 아동이 재활승마의 경험이 없으며, 6세~10세 학부모의 응답에서 재활승마가 효과가 있을 것이라고 응답하였다. 이해도에서 재활승마는 주로 말을 타는 신체운동이고, 치료와 운동을 겸비한 전문영역으로 구체적인 도움을 주는 방법이라고 하였으며, 재활승마는 바람직하지 못한 행동을 교정 및 개선하는 방법으로 이용되고 재활기관에서 재활승마가 필요한 것으로 이해하고 있었다. 기대도에서 재활승마 치료사가 갖추어야 할 가장 중요한 요소는 치료학(작업치료, 물리치료, 언어치료) 전공자여야 한다고 나왔고, 재활승마는 개별치료, 주 2~3회가 적당하다고 하였다.

• 대한간호학회지
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• 제49권4호
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• pp.437-448
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• 2019

Purpose: This study was conducted to test a path model for the factors related to undergraduate nursing students' clinical practicum stress, based on Lazarus and Folkman's stress-coping model. Methods: This study utilized a path analysis design. A total of 235 undergraduate nursing students participated in this study. The variables in the hypothetical path model consisted of clinical practicum, emotional intelligence, self-efficacy, Nun-chi, and nursing professionalism. We tested the fit of the hypothetical path model using SPSS/WIN 23.0 and AMOS 22.0. Results: The final model fit demonstrated a satisfactory statistical acceptance level: goodness-of-fit-index=.98, adjusted goodness-of-fit-index=.91, comparative fit index=.98, normed fit index=.95, Tucker-Lewis index=.92, and root mean square error of approximation=.06. Self-efficacy (${\beta}=-.22$, p=.003) and Nun-chi behavior (${\beta}=-.17$, p=.024) were reported as significant factors affecting clinical practicum stress, explaining 10.2% of the variance. Nursing professionalism (${\beta}=.20$, p=.006) and self-efficacy (${\beta}=.45$, p<.001) had direct effects on emotional intelligence, explaining 45.9% of the variance. Self-efficacy had indirect effects on Nun-chi understanding (${\beta}=.20$, p<.001) and Nun-chi behavior (${\beta}=.09$, p=.005) through emotional intelligence. Nursing professionalism had indirect effects on Nun-chi understanding (${\beta}=.09$, p=.005) and Nun-chi behavior (${\beta}=.09$, p=.005) through emotional intelligence. The variables for self-efficacy and nursing professionalism explained 29.1% of the Nun-chi understanding and 18.2% of the Nun-chi behavior, respectively. Conclusion: In undergraduate nursing education, it is important to identify and manage factors that affect clinical practicum stress. The findings of this study emphasize the importance of Nun-chi, self-efficacy, emotional intelligence, and nursing professionalism in the development of an educational strategy for undergraduate nursing students.

• 대한치과보철학회지
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• 제30권2호
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• pp.273-285
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• 1992

The purpose of this study was to evaluate facial form, arch form and tooth form in young adults to determine if a correlation exists. 115 subjects who had healthy natural maxillary incisors and good occlusion consisted of 71 males and 44 females ranging from 20-30 years of age. Facial photographs and, intraoral photographs of upper anterior teeth and dental casts of upper jaws were taken to demonstrate facial form, dental arch form and tooth form. Form analysis is determined by comparing the ratio of the widths of the faces, dental archs and the teeth. The Chi-square test of independence between facial form, arch form and tooth form, was executed and the significance level determined. The results were as follows : 1. The distribution of facial forms was 66.1% square-tapering, 27.0% square, 5.2% ovoid, 2% tapering-square. 2. The distribution of tooth forms was 65.2% ovoid, 20.0% square-tapering, 11.3 % tapering-square, 3.5 % square. 3. The distribution of arch forms was 50.4 % square-tapering, 48.7 % tapering, 0.9 % reverse tapering-square. 4. There was no large differences in the distribution of facial forms, dental arch forms and tooth-forms between male and female. 5. No relationship existed between the tooth form and the facial form. 6. No relationship existed between the facial form and the dental arch form. 7. No relationship existed between the tooth form and the dental arch form. 8. This gave the impression that dental arch form and facial form could not be used as a true index in tooth selection.

• 응용통계연구
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• 제17권1호
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• pp.89-103
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• 2004

2차원 분할표 형태의 자료에 대해 두 범주형 변수들간의 독립성을 검정함에 있어, 만일 두 변수 각각의 모분포가 이미 완전히 알려진 경우라면 이 알려진 정보를 충족할 수 있도록 분할표 자료를 보정한 후 보정된 분할표 자료에 대해 전통적인 카이제곱 검정법을 적용하는 것이 더 타당함을 논증한다 그리고 이에 근거한 제약상황 카이제곱 독립성 검정법을 유도하고 모의실험을 통해 전통적인 무보정 카이제곱 검정법과 비교한다.