• Journal of Agricultural Extension & Community Development
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• v.13 no.1
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• pp.135-147
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• 2006

The purpose of this study were to analyze youth leadership skill of rural youth and to suggest implication for rural youth development. The study was carried out questionnaire. To analyze youth leadership skill of rural youth, the data were collected from 196 rural youth by stratified random sampling. The SPSSWIN / ver12.0 was used for analyzing data with t-test, ANOVA, and factor analysis. The major findings of this study were as follows; 1) Average of youth leadership skill is 91.42, minimum is was 61, maximum is 130, 2)When it comes to youth leadership skill, it is higher in highly educated youth and higher economic status, 3)When it comes to youth leadership skill, it is higher in farming size, extending in three years, promise of farming successor. Conclusionally, the study suggests community youth should be offered more educational experience for developing youth leadership.

• Journal of Agricultural Extension & Community Development
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• v.12 no.2
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• pp.257-270
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• 2005

The purposes of this study were to explore the differences of decision making in farming settlement and to analyze attributes for vocational decision making of rural youth. The study was carried out by literature review and questionnaire. To analyze vocational decision making of rural youth, the data were collected from 196 rural youth by stratified random sampling. The SPSSWIN/ver10 was used for analyzing data with frequency, percentage, t-test ANOVA and factor analysis. The major findings of this study were as follows; 1) Rural youth decided to become farmers at the middle and high school stage for farming succession and eco-friendly life orientation. 2) Youth parents were the major source of influence on their rural youth to settle in farming. 3) Rural youth with high economic status, upper academic achievement and university graduation showed higher autonomous decision making and lower heteronomous decision making. 4) Rural youth with low economic status and low academic achievement showed unstable vocational decision making. 5) The study suggested that rural youth with unstable decision making should get more educational opportunities and supports.

• Communications for Statistical Applications and Methods
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• v.10 no.2
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• pp.553-566
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• 2003

In many cases, the measurement error variances may be functions of the unknown true values or related covariates. This paper considers design-based estimators of the parameters of these variance functions based on the within-unit sample variances. This paper devotes to: (1) define an error scale factor $\delta$; (2) develop estimators of the parameters of the linear measurement error variance function of the true values under large-sample and small-error conditions; (3) use propensity methods to adjust survey weights to account for possible selection effects at the replicate level. The proposed methods are applied to medical examination data from the U.S. Third National Health and Nutrition Examination Survey (NHANES III).

• Journal of the Korean Home Economics Association
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• v.35 no.6
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• pp.111-125
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• 1997

The purposes of this study were to analyze the work and leisure of rural couples in Chonnam district, to examine couple's perception about farm life, to analyze the factors influencing the time use of husbands and wives. 300 farmhouses were selected by stratified sampling from 20 Myon in Chonnam district, 244 husbands and 283 wives were interviewed using questionnaire and time diary. The major results are as follow : 1) The rural couples have not pride on agriculture, the level of satisfaction and policy reliability was low, and impoverished conditions was high. 2) work time of wives was two hours longer did, and leisure time of wives was 73 minutes shorter than their husbands. 3) The time use of husbands and wives were significantly influenced by agricultural type, farmwork, house work time, age etc.

• Journal of the Korean Home Economics Association
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• v.41 no.5
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• pp.131-148
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• 2003

This study investigated family foster care characteristics according to types of foster parents-surrogate, kin, general parents and predicting factors of foster children's adjustability to new environment. Participants were 618 cases of foster parents in 17 areas of the country through stratified sampling. It was found that the surrogate foster parent, tends to be older, received less education, has lower income, and is in poor health, as opposed to kin parents or general foster parents. There were significant effects of foster parent's age, living arrangement, income, education, consideration of foster child, and the periods of foster care experience as well as child's sex, contact of biological parents on emotional, behavioral, and family relational adjustment of the foster children.

• Journal of The Korean Association For Science Education
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• v.15 no.2
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• pp.194-200
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• 1995

The purpose of this study is to investigate the attitudes related to the science of elementary and middle school students. The instrument used for measuring attitudes was developed by Korea National University of Education. 1488 students were sampled by stratified cluster sampling method. The major findings of this study are as follows. 1.Elementary school students have significantly higher attitude scores than middle school students. 2.The value of Pearson's correlation coefficient among the sub-categories of science attitudes was 0.3773 - 0.6336, which was significant at the 0.001 level. 3.There was no statistically significant difference between grade and sex in middle school students. 4.There was statistically significant difference between grade and sex in elementary school students.

• Journal of the korean society of oceanography
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• v.32 no.1
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• pp.38-45
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• 1997

To find out the changes in vertical distribution patterns over the 24-h period, a key and the first step to tackle the problem of adaptive significance of diel vertical migration (DVM), vertically stratified time series samplings with multiple opening/closing plankton samplers were done in the East Sea of Korea (Sea of Japan). Sampling was done almost every 4 h for one day period following the same water parcel in Nov. 1995 and May 1996, respectively. Resultant patterns of vertical distribution showed that some species such as most abundant taxa Metridia pacifica and Scolecithyicella minor, both Copepoda, performed DVM even in the study area of strong thermal stratification. Their patterns of DVM such as distance scales and timing of movements were not the same each other, and they were separated from other taxa in the dendrogram obtained by the cluster analyses, Most minor taxa grouped in one, however, seemed not to do DVM in the study area of strong thermal stratification. They usually preferred the warmer surface layer where the foods were probably more abundant.

• The Korean Journal of Applied Statistics
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• v.8 no.2
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• pp.43-54
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• 1995

The fishery household economy survey is a sample survey which produce estimates on the fishery household economy and fishery management in Korea. We propose a sample design for this survey. This design is developed based on results of 1990 fishery census and Shi-Do is assumed to be subpopulation for Shi-Do estimates. Samples are selected by stratified two-stage cluster sampling in Shi-Do and income function is found for stratification. Fishery household income is estimated by a linear estimator.

• Korean Institute of Interior Design Journal
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• no.17
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• pp.173-180
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• 1998

The aim of the study was to grasp the current trends and to predict the future trends of space composition characteristics by analyzing floorplans drawn by housewives as their ideal apartments. The content analysis method was used for this study. This research used data from a competition held in 1993 by a housing construction company. Among 3,102 floorplans collected 12,232 were selected by Proportional Stratified Sampling Method. The major findings are as follows; 1) Some major features were interpreted as current trends; respondents wanted new rooms that could accomodate various functions separated the private spaces from public trends; they wanted to expand the verandah both visually and actually put importance on the number of bathrooms and have the space for outdoor living and leisure activities.

• The Journal of Korean Society for School & Community Health Education
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• v.11 no.1
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• pp.7-15
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• 2010

Objectives: The purpose of this study was to examine the impact of the oral health education experiences of college students on their oral health knowledge and oral health behavior. Method: The instrument used in this study was questionnaires. The subjects in this study were 335 students who were selected by stratified sampling according to oral health education experiences. Out of them, 123 students received oral health education, and 212 students didn't. Results: There were differences between the two groups in oral health knowledge and oral health behavior according to oral health education. As for the necessity of oral health education, 98.4 percent felt the need for that. Conclusions: Oral health education exerts an influence on oral health knowledge and behavior, and appropriate educational methods and media should be developed to motivate patients to receive oral health education.