• 응용통계연구
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• 제3권1호
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• pp.47-58
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• 1990

로보트화된 좌표측정기에 사용됨에 따라, 직교 회귀가 이제는 단순히 흥미로운 수학문제로 그치지 않게 되었다. 특히, 공학 전공 학생을 대상으로 하는 기초 통계학 과목에서 간단히나마 다룰만한 문제가 되었다고 본다. 직교 회귀의 핵심 개념을 간략히 정리한다. 아울러 직교 회귀의 기하학적 구조를 공학 전공 학생들이 잘 알고 있는 역학적 개념으로 설명함으로써 학생들이 쉽게 이해하고 또한 사고의 폭을 넓히는데 도움이 되고자 한다.

• Journal of the Korean Statistical Society
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• 제25권2호
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• pp.235-241
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• 1996

The ordinary least squares estimator of the disturbance variance in the linear regression model with stationary errors is shown to be asymptotically unbiased when the error process has a spectral density bounded from the above and away from zero. Such error processes cover a broad class of stationary processes, including ARMA processes.

• 응용통계연구
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• 제6권2호
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• pp.265-275
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• 1993

본 논문에서는 회귀모형의 M-추정량을 다루고 있다. 비선형 회귀모형에서 M-추정량을 정 의하고 모형의 모수공간이 콤팩트일 때 일치성이 성립하기 위한 조건을 제시하였다.

• 대한가정학회지
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• 제29권2호
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• pp.135-154
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• 1991

The purposes of this study are: 1) To find out overall family life issues percieved by the middle-classhousewives in their forties. 2) To examine detailed aspects related to middle years crises, leisure activities, children issues, family economy issues, and housing issues. 3) To clarify solutions to, and provide basic data on family issues raised by the middle-class families. The middle-class housewives in their forties living in the Seoul area were the subject of the survey. The sample size analysed in this study was 422. Data were analysed by the frequency, mean, percentile, standard deviation, X2-test, analysis of variance, multiple classification analysis, analysis of multiple regression, and Scheffe-test as a post-hoc analysis. The conclusions are as follows: First, the middle-class housewives tend to give more importance on children issues, especially on academic achievement and career development. Second, family cohesion of middle-class families is comparatively high and intra-familial conflict is low, and middle years crisis of housewives is comparatively low, too. Third, the stability of middle-class families can be found in household economic management patterns. one fourth of the families own stocks and two fifths of the families own real estate except their own dwelling house. Be based on their property income add to their labor income, middle-class families are showed their economic stability, however, intra-class inequality is found, too. Fourth, the great part of middle-class families that possess their own house, tend to be unsatisfied with their housig scale, and a half of the families expect to enlarge their housing scale for more comfortable and convient living.

• 한국콘텐츠학회논문지
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• 제18권5호
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• pp.579-591
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• 2018

본 연구의 목적은 초등학생의 체육수업태도와 놀이성이 학교행복감에 미치는 영향을 살펴보는 것이다. 자료 수집을 위해, I 광역시의 5개 초등학교 300명의 초등학생에게 설문지가 배포되었으며, 불성실한 응답 자료를 제외한 278부의 설문지가 자료분석에 사용되었다. 자료분석을 위해, 기술분석, 탐색적요인분석, 상관관계분석, 다중회귀분석이 사용되었다. 상관관계분석결과, 모든 연구변인들은 상호간에 정적인 상관관계를 나타내었다. 다중회귀분석결과, 놀이성의 하위요인인 감정표현성은 학교행복감의 모든 하위요인에 정적인 영향을 미치는 것으로 밝혀졌으며, 놀이성의 신체적 활기요인은 학교행복감의 자기존중감, 낙천주의, 그리고 전반적 학교행복감 요인에 정적인 영향을 미치는 것으로 나타났다. 그리고 놀이성의 정신적 자발성 요인은 교사관계 전반적 학교행복감요인에 정적인 영향을 미치는 것으로 나타났다. 또한 체육수업태도는 학교행복감의 모든 하위요인에 정적인 영향을 미치는 것으로 나타났으며, 표준화회귀계수 분석결과, 체육수업태도가 놀이성에 비해 학교행복감에 미치는 영향이 큰 것으로 나타났다. 본 연구는 초등학생의 체육수업 태도 및 놀이성이 학교행복감에 미치는 영향을 살핀 최초의 국내연구로서 의미가 있으며, 국내 초등학생의 행복감 증진을 위한 실증적 자료를 제시한다는 점에서 의의가 있겠다.

• 한국치위생학회지
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• 제21권4호
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• pp.481-489
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• 2021

Objectives: This study was conducted to understand the effect of learners' self-determination on class participation, focusing on the feedback type of educators. Methods: A survey was conducted from May 1 to May 31 2021 on dental hygiene students, and a total of 151 valid responses were analyzed. The questionnaire consisted of general characteristics, self-determination, class participation, and educator's feedback type. The analysis method used correlation analysis and hierarchical regression analysis. Results: In relation to self-determination, class participation, and feedback type of educators, self-determination was positive feedback (r=0.338, p<0.01), class participation was corrective feedback (r=0.418, p<0.01), and positive feedback was correction (r=0.742, p<0.01). As a result of the mediating effect of the educator's feedback type in the relationship between self-determination and class participation, it was found to be significant by partially mediating positive and corrective feedback. Conclusions: It was found that the right to self-determination influences class participation based on positive feedback and corrective feedback of educators. It relates to efforts to strengthen learners' self-determination and provide appropriate types of feedback from educators.

• 한국치위생학회지
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• 제20권1호
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• pp.63-71
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• 2020

Objectives: This study provides basic data for developing practical teaching methods enabling efficient execution of the dental hygiene care process. Methods: A total of 197 dental hygiene students experienced in dental hygiene care process in Gwangju and Jeonnam were surveyed from June 1 to August 30, 2019 to study their class flow, professors-student relationships, and class satisfaction level. Post survey, statistical analysis was performed using frequency analysis, independent t-test, Pearson's correlation analysis, and multiple regression analysis. Results: 1. Class fl ow was high in three lecturers (3.56), four hours per week (3.39), and four hours per week (3.94). Class satisfaction was high in three lecturers (3.99) and four hours per week (3.90) (p<0.05). 2. There was a positive correlation between class flow and professor-student relationship (r=0.519), class fl ow and class satisfaction (r=0.566), and professor-student relationship and class satisfaction (r=0.838) (p<0.01). 3. The factors influencing class fl ow were the number of lecturers (β=0.442), class hours per week (β=-0.397), and class satisfaction (β=0.385). Conclusions: Apart from finding ways to improve class satisfaction for class flow in the dental hygiene care process, efforts are required to increase the number of lecturers and class hours per week for efficient class management. Further research is needed to develop practical teaching methods.

• 대한의료기공학회지
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• 제17권1호
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• pp.1-23
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• 2017

Objective : This paper was written to develop clinically useful education system of 'Yang-Seng Gi-Gong' based on the principles of Korean medicine by analyzing the lecture evaluation through the questionnaire Methods : We surveyed 55 students who took 'Yang-Seng Gi-Gong' lectures at Wonkwang University School of Korean Medicine in 2016. Results : 1. The degree of reflection of the learning goal was 7.0 ± 2.1 and the overall interest was high in the regression analysis of the learning goal reflectivity. The satisfaction of the practical lecture was higher than the theoretical lecture. 2. In the evaluation of difficulty level, it was evaluated that the practical training was effective and the practice of standing position was the most difficult. 3. Due to the nature of the lectures, the difference between men and women was found in several items but it was not effective. 4. Generally, we appropriately assessed the preparation and progress of the class and practice. 67% of the respondents evaluated the current class as appropriate. 5. In the survey on participation in class, there was a high degree of participation in the practical lecture and a high correlation between overall participation and participation in the practical lecture. Conclusions: It is necessary to look for ways to concentrate with interest in the lecture, focusing on the practice, and to encourage the participation of women in the practice.

• 한국환경보건학회지
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• 제30권5호
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• pp.440-448
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• 2004

Airborne bacteria, gram negative bacteria (GNB) and fungi were measured in 70 class of 17 kindergartens. The objective of this study is to identify the factors influencing airborne concentrations of bacteria, GNB and fungi using multiple regression analysis. The average concentrations of bacteria and fungi exceeded $1,000\;CFU/m^3$. The average of GNB was $3.7{\times}10^2\;CFU/m^3$. This results indicated that air of kindergartens was contaminated with microbes such as bacteria and fungi. ANOVA test found that the concentrations of bacteria, GNB and fungi were significantly different by the characteristics of weather (rain, after rain, sunny) sampling date (July, August, September and October), the location of sampling site (ground level and basement) and the location of toilet (inside class, nearby class and away class). Multiple regression tests concluded that sampling date, the scale of city where kindergartens are located, the location of sampling site and ventilation efficiency can significantly affect the airborne concentration of bacteria, GNB and fungi. Most of these factors could be related moisture. Environmental factors that can cause the increment of moisture should be controlled in order to reduce airborne concentration of bacteria, GNB and fungi. Legal actions concerning prohibition on the presence of toilet inside class and ventilation criteria should be taken.

• 디지털융복합연구
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• 제18권11호
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• pp.51-58
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• 2020

본 연구는 교사 배경변인과 교사효능감이 학생 참여형 수업에서 초등교사의 수업행동에 어떠한 영향을 미치는지 분석하기 위한 목적으로 수행되었다. G 지역에 재직 중인 초등학교 교사 122명을 대상으로 설문조사를 실시하였으며, 변수 간의 영향 관계를 분석하기 위해 회귀분석을 수행하였다. 연구결과, 교사효능감의 하위변인인 자기조절효능감과 과제난이도 선호가 초등교사의 수업행동에 유의미한 영향을 미치는 것으로 밝혀졌다. 교사의 수업행동 중 수업지식과 수업동기유발에 대해서는 자기조절효능감이 과제난이도 선호보다 더욱 높은 영향을 미쳤고, 수업의사소통에 대해서는 과제난이도 선호가 자기조절효능감 보다 영향력이 더욱 높은 것으로 나타났다. 연구결과를 바탕으로 학생 참여형 수업에서 초등교사의 바람직한 수업행동이 나타날 수 있는 방안에 대해 고찰하였다.