• Journal of the Korean Academy of Clinical Electrophysiology
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• v.2 no.2
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• pp.51-59
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• 2004

The purpose of this study was to analyze. The effect of participation physical activities on health care patterns in the aged. The subject of the study was selected by multi-stage stratified cluster random sampling among the aged center and aged club to participate program whose age were 65 and over year old among inhabitant the Kwangju metropolitan area. The data were collected through a questionnaire adapted from Payne and Hahn's(1986) 'Understanding Your Health-A personal profile; Evaluating Your Health'. The pilot test was executed after the questionnaire was translated into Korean.

• Journal of The Korean Association For Science Education
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• v.13 no.3
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• pp.334-340
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• 1993

A survey on the attitudes toward science and science courses was conducted with three hundred students of primary and secondary schools. The instrument used for measuring attitudes was TOSRA(Fraser, 1981). The subjects was sampled by stratified cluster sampling method. The major findings of this study are as follows. 1. The attitude scores has no significant differences among the students of large city, mid-sized city and rural areas. 2. The attitude scores of male and female students has ststistically significant difference. 3. Primary students has significantly higher attitude scores than secondary students. 4. In case of senior high schools, science-major students has significantly higher attitude scores than humanity-major students.

• Safety and Health at Work
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• v.5 no.3
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• pp.136-139
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• 2014

Background: Occupational injuries cause major health problems, which the developed, developing, and underdeveloped nations worldwide are facing today. The present study aimed to assess dental caries, periodontal health of stone mine workers, and the relationship between wasting diseases and the years of working experience. Methods: The study population comprised 510 men, selected based on the stratified cluster sampling procedure. Clinical oral examinations were carried out, and periodontal disease, dental caries, and wasting diseases were recorded. Results: Workers were in the age group of 17-56 years; the prevalence of dental caries in the workers was found to be 74%, with a mean decayed, missing, filled teeth index of 2.89. A periodontal pocket of more than 6 mm was observed in 6% of the workers. Conclusion: The oral health of mine workers is in a poor state; steps should be taken so as to provide basic medical and dental care facilities.

• Journal of the Korean housing association
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• v.2 no.2
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• pp.55-69
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• 1991

The purpose of this study were 1) to identify the pattern of general life style of the middle classs apartment residents. 2) to examine the types of the home furnishing attitudes of those. 3) to find out the relationships between life style and the home furnishing attitudes. The data were collected using self-administered questionnaire. The respondents were 227 homemakers of the middle class apartment residents, selected through stratified random sampling technique. Data were coded and analyzed using SPSS computer packages. The statistics used were frequency, percentage. Pearson's correlation coefficient, F-test, X2-test, factor and cluster analysis. 6 patterns of life style and 6 types of the home furnishing attitudes were identified. The relationships between the life style and the home furshing attitudes were interpreted by 25%.

• Safety and Health at Work
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• v.4 no.2
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• pp.111-116
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• 2013

Background: The aim of this study was to evaluate the quality of the Second Korean Working Conditions Survey (KWCS), focusing on its validity and reliability. Methods: The external validity was evaluated by the assessment of sampling procedures and the response rate, in order to investigate the representativeness of the sample. The content validity was evaluated by the assessment of the development of the questionnaire, and the consistency of questions for the selected construct. The test-retest method was used to evaluate the reliability by means of a phone call survey of 30% of the respondents, who were randomly selected. The respondents' satisfaction regarding the survey procedures and interview time were analyzed to evaluate the quality of survey data. Results: The external validity was assured by an acceptable sampling procedure, rigid multi-stage stratified cluster random sampling. The content validity was also guaranteed by a reasonable procedure for the development of the questionnaire with a pretest. The internal consistency of the questions for work autonomy was maintained, with 0.738 of Cronbach's alpha. The response rate of 36% was lower than that of the European Working Conditions Survey (EWCS), with a contact rate of 66%, compared to 76% for the EWCS. The matching rates of the five retested questions were more than 98% reliable. Conclusion: The quality of the second KWCS was assured by the high external and content validity and reliability. The rigid sampling procedure and development of the questionnaire contributed to quality assurance. The high level of reliability may be guaranteed by the sophisticated field survey procedures and the development of a technical manual for interviewers. The technical strategies for a high response rate should be developed for future surveys.

• Korean Security Journal
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• no.20
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• pp.141-177
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• 2009

The purpose of this study is to identify the effects of service orientation perceived by employees of security companies on service quality and management performance based on service orientation theory. To test this, 345 participants were sampled from the security companies located in Seoul and Gyeonggi area using stratified cluster random sampling, and then frequency analysis, exploratory factor analysis, t-test, one-way ANOVA analysis and path analysis of the resulting data were conducted using SPSS 15.0 program. Conclusions derived from the aforementioned analytical methods are as follows: there were difference in service orientation according to demographic characteristics. And results from analyses showed that service leadership, which is sub factor of service orientation, was highly evaluated by the male group, and the customer service, by the participants of having college education and more, and the service system, by the group of the income bracket between 1.51 and 2 Million Won.

• Journal of the Korean Data and Information Science Society
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• v.21 no.4
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• pp.669-679
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• 2010

A sample survey design is suggested for the service satisfaction evaluation of regional education offices based on the sample size of 2009 Gyeongnam regional education offices's customer satisfaction survey. The sample design is developed to fit the goal of evaluation of individual regional offices and allocate at least the minimum sample size to each city or county in Gyeongnam to achieve the goal of the survey. The population is stratified according to the regions and the types of schools, and the sample of schools is selected with proportional to the size of classes within each stratum. Finally, each sample student is selected according to two-stage cluster sampling within each sample school. Weighting averages, weighting totals and so on can be evaluated for analysis purposes. Their variance estimates can be evaluated using re-sampling methods like BBR, Jackknife, linearization-substitution methods, which are generally used for the data from a complex sample.

• Journal of Digital Convergence
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• v.15 no.11
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• pp.567-579
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• 2017

The purpose of this study was conducted to clarify physical activity university students on time perspective in leisure constraints and leisure flow. To achieve this purpose, subjects of this study were sampled 295 Physical Activity University Students participant using purposeful sampling method for 2 months from May to June of 2017. Using questionnaires stratified cluster random sampling in university students in D city and C city. The analysis method was used t-test, one-way ANOVA, multiple regression analysis, correlation analysis methods in order to solve problems of the study. According to the study Result, First, studies show that female have high levels of leisure constraints than males. Males have higher levels of leisure flow than females. The first grader show high level of individual constraints and past negation were also high. In the series of majors, natural affiliates and humanities are high in the past negation, present destiny, the service major currently high in pleasure and of leisure, autotelic experience of leisure flow. In the rhythmic type of Activity type, the past negation, present destiny and leisure constraints are highly likely to be higher. In the competitive have shown that is high. Second, leisure constraints on students' participation in physical activities have been found to have negative influence on their students. Third, leisure flow have shown that they have a positive effect on past affirmation and present pleasure.

• Journal of Digital Convergence
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• v.18 no.10
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• pp.501-507
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• 2020

The purpose of this study is to identify the personal characteristics of college students participating in leisure activities and the impact of their leisure experience on job-seeking Stress, To achieve this purpose, subjects of this study were sampled 264 university students participant using purposeful sampling method for 2 months from september to october of 2019. Using questionnaires stratified cluster random sampling in university students in C city. Studies have shown that first, looking at gender, women receive more academic stress than men. Second, looking at the results of the school year, the first and fourth graders received more personality stress than the second and third graders. Third, if you look at the results of the major category, it turns out that students in the natural major receive more personality stress than in the social major category. In addition, students in the humanities major are more stressed out about the Family environment stress than in the natural major. Fourth, if you look at the results of the allowance, students who receive 400,000 won to 500,000 won and those who receive 100,000 won to 200,000 won or less are under stress from the family environment stress than those who receive 500,000 won or more. Fifth, if you look at the results of your experience in leisure activities, the more experience you have in leisure Therefore, college students will have to lay the groundwork for self-control through various leisure activities for job stress. activities, the lower your job-seeking Stress.

• Journal of Fisheries and Marine Sciences Education
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• v.27 no.5
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• pp.1436-1446
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• 2015

This study aims to understand how scuba diving instructors' expertise, instructor reliability and instruction efficiency are related to each other. In order to achieve the research goal, the study used a multi-stage stratified cluster sampling method and collected valid samples from 400 individuals at age of 20 and older who were scuba diving in scuba diving clubs in Busan, Gyeongnam, Gyeongbuk, Jeonnam and Jeonbuk. The 400 valid samples were applied to the data analysis. The study used SPSS 21.0 for processing the gathered data via a frequency analysis, a reliability analysis and a correlation analysis and in order to verify the hypotheses, the study applied AMOS 21.0 and conducted a confirmatory factor analysis and a structure equation model analysis. Findings that the study had extracted are summarized as follows. First, the study confirmed that the scuba diving instructors' expertise has a positive effect on the instructor reliability. Second, the scuba diving instructors' expertise was reported to positively influence the instruction efficiency. Third, the results revealed that the scuba diving club members' reliability in the instructors has a positive influence on the instruction efficiency.