• Journal of Families and Better Life
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• v.25 no.4
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• pp.43-55
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• 2007

The Purpose of this study was to investigate the ecological variables on adolescent's sociometric popularity. Independent variables were organism(sex, age, aggression, self-esteem, impulsiveness, prosocial behavior, dominance), microsystem(parenting style, family support, friends relationship, teacher support), mesosystem(family-peer relationship, family-school relationship), and exosystem(positive community environment, social support of extended family, school's policy). The subjects were 835 - 1st and 2nd graders of two middle and two high schools in Daegu. Adolescent's sociometric popularity and ecological variables were measured with questionnaire. Adolescent's sociometric popularity was measured with sociometric popularity questionnaire. Organism variables were measured with sex, age, aggression, self-esteem, impulsiveness, prosocial behavior and dominance questionnaire. Microsystem variables were measured with parenting style, family support, friends relationship and teacher support questionnaire. Mesosystem variables were measured with family-peer relationship and family-school relationship questionnaire. Exosystem variables were measured with positive community environment, social support of extended family and school's policy questionnaire. The data analyzed by frequency, percentage, mean, cronbach's $\alpha$, and multiple regression. The major findings were as follows: First, adolescent's sociometric popularity was affected by age, overt aggression, academic self-esteem, social self-esteem, and impulsiveness of organism variables. Second, adolescent's sociometric popularity was affected by mother's affectional parenting, mother's control parenting, and attachment to friends of microsystem variables. Third, adolescent's sociometric popularity was affected by family - peer relationship and family - school relationship of mesosystem variables. Fourth, adolescent's sociometric popularity was affected by appraisal support of extended family, after-school activity, and circle activity of exosystem variables.

• Korean Journal of Child Studies
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• v.24 no.4
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• pp.1-14
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• 2003

The daily hassles of 5-year-old children were explored and analyzed as microsystems in order to discover the relative importance of ecological factors in children's daily hassles. The subjects were 322 children, their mothers and 34 teachers recruited from 5 kindergartens and 15 child-care centers in Seoul and Kyonggido province. Children were interviewed individually with pictures showing certain stressful situations. Questionnaires were administered to mothers and teachers. The findings indicated that the microsystem variables of Kindergartens and child-care centers were the most significant factors explaining children's daily hassles. Therefore, it was suggested that the policies and regulations on child-care facilities be carefully developed and strictly regulated.

• Journal of the Korean Home Economics Association
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• v.45 no.7
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• pp.71-91
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• 2007

We investigated the ecological variables of adolescent sexual behavior. We grouped the behaviors into organism, microsystem, mesosystem, and exosystem. The variables belonging to the organism group were sexual attitude, sex, grade, sexual knowledge, sexual education, dating experience, problem behaviors, and self-control. The microsystem variables included the parent-adolescent communication about sexuality, parental monitoring, parent educational background, friend relationships, and school environment. Moreover, the mesosystem variables included family-peer and family-school relationships. The exosystem variables were comprised of neighborhood environment and pornography. The study group included 369 adolescents from the first and second grade of several high school in Daegu, Korea. We found that the factors affecting adolescent sexual behavior included grade, sex, dating experience, self-control, smoking, and pursuing sexual pleasure. As well, contact with deviant friends, father-adolescent communication about sexuality, school type, and attachment to teacher. In addition the family-peer relationship also affected adolescent's sexual behaviors as well as pornography and neighborhood environment. Lastly the variable belonging to the organism group was found to have the greatest effect on adolescent, sexual behavior compared to the other variables.

• The Journal of the Korea Contents Association
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• v.16 no.7
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• pp.135-145
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• 2016

This research intended to investigate, from an ecological perspective, significant predictors affecting school life satisfaction. The subjects were 312 students(2nd grade) of commercial high school in Kyonggido. Data collected by questionnaire survey were analyzed by SPSS Win 22.0 and descriptive statistics, correlation analysis, hierarchical linear regression, and stepwise regression were conducted. There were 21 independent variables: 8 organism variables (self-competence, interpersonal skills, internal control, mood awareness, emotional expression, empathy, emotional regulation, emotional capability), 9 microsystem variables(school variables: the relationship with teachers, school learning, classroom climate, school welfare facilities, school environment/peer variables: peer relationship/family variables: family functioning, education level of fathers, economic status), 2 mesosystem variables(parent-teacher relationship, parent-children's peer relationship), 1 exosystem variables(satisfaction with Korean educational system), 1 macrosystem variables(Korean's primal belief in educational achievement). The results are as follows; the significant variables were the relationship with teachers, satisfaction with Korean educational system, peer relationship, emotional capability, parent-teacher relationship($R^2=45.3%$); and the effect of microsystem was the strongest($R^2=35.7%$). This research is meaningful of analyzing school life satisfaction of commercial high school in terms of ecological perspective.

• Korean Journal of Human Ecology
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• v.9 no.1
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• pp.71-84
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• 2000

The objective of this research is to investigate the relation between the parenting stress, recognized by the working mothers, and associated variables systematically. For the purpose, I analyzed the demographic of the working mothers and surrounding variables at the levels of microsystem, mesosystem, and macrosystems, to relate with respect to the parenting stress problem. The research composes the sample space of working mothers having children less than 6 years old. The data were analyzed by the statistical method based on frequency, percentile, Pearson's correlation, hierachical and multiple regression. The main results of the research can be summarized as follows: According to the independent effects of diverse ecological systematic variables, there are shown that 11 independent variables can describe about 55.6% of the parenting stress of the working mothers. Among these variables, 'satisfaction about the child care' is the most significant factor, which covers about 34.5%. Additionally, the next significances are observed from such variables as 'temperament of children' (8.2%), 'satisfaction of marriage' (5.1%), 'support of spouse' (1.5%), 'level of education' (1.9%) and so on. In conclusion, it is strongly recommended to compensate and restructure the child care systems more systematically, to afford more reliable parenting environment to the dual earner mothers and fathers and children simultaneously.

• Journal of the Korean Home Economics Association
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• v.38 no.12
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• pp.47-58
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• 2000

The purpose of this study was to investigate working mothers'parenting stress. The study was approached from an ecological perspective. Data were collected from 185 mothers who were professionals, office or labor workers, and have their children enrolled at the day care center located at their workplace. All the subjects lived in Seoul. The results of this study were as follows: 1. The working mothers'parenting stress was found to be at a moderate level(Mean=2.30). 2. The hierarchical and stepwise regression analyses revealed that significant variables in explaining the parenting stress of working mothers were the degrees of attachment with the subject's mother($\beta$=-.24), age($\beta$=-.23), the degrees of flexibility in working conditions($\beta$=-.19), educational level($\beta$=.18), the degrees of husbands'participation in child care($\beta$=-.17), and the number of children ($\beta$=.16). These variables explained 17.2% of working mother's parenting stress. 3. It was found that the effect of microsystem variables on working mothers' parenting stress were greater than the combined effects of mesosystem, exosystem and macrosystem variables.

• Journal of Families and Better Life
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• v.35 no.2
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• pp.1-16
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• 2017

The purpose of this study was to investigate adolescents' individual and microsystem variables including relationships with parents and friends affecting adolescents' experiences of mobile social networking site (SNS) cyberbullying based on the human ecological perspective. Data came from 344 middle school students who lived with both their parents in the Seoul and Gyunggi areas. A multiple regression analysis showed that adolescents' characteristics, relationships with parents, and friends were associated with their experiences of mobile SNS cyberbullying. These findings suggest that good relationships with parents could be protective factors for adolescents to reduce mobile SNS cyberbullying. However, adolescents' characteristics including aggression, depression, and delinquent peers were positively associated with adolescents' experiences of mobile SNS cyberbullying. This study highlights that various environments are closely related to adolescent development.

• Journal of the Korea Convergence Society
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• v.8 no.11
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• pp.423-430
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• 2017

The purpose of research is analyzing the ecological variables on the effect of child care teacher's happiness. The data was collected by the survey of the happiness factors and ecological variables of child care teachers. The results are listed below. First, of organismic variable, the age and the educational background of child care teacher showed discrimination one's happiness. Second, of micro system variable, the marital status is the only thing that affect the happiness. Third, of meso system variable, the teachers who are highly interact on each other such as, child to teacher and parents to teacher are much happier than others. Finally, of the outside system variable, the teachers who are working at the better working environment and good quality of duty are much happier than others.

• The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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• v.17 no.2
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• pp.130-137
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• 2012

The underwater glider using conception of Lagrangian method, is a new observation platform to understand the properties of the ocean vertically. In 2011 March, KORDI made a first successful autonomous trip from Hupo to west coast of Uleungdo piloting Littoral Glider of Alaska Native Technology LLC. The journey considered many environmental variables and route vigilantly selected, the glider covered 177 km horizontally and took approximately 6 days (153 hours). Despite the existence of 1 kt eddy current, Sound velocity sampling was conducted from 5 meters and reaching maximum of 200 meters depth at each dive. It successfully collected sound velocity and temperature profile at every 5 seconds totaling up to 1408 profiles using SVT&P sensor. During the flight it was also a mission to check the diverse modes of the glider i.e. spiral, waypoints, heading, drift and hover could function without a defect in a given situation. These modes were thoroughly monitored and it could be considered that the glider handled it well during the flight. As a result of this test flight, it was evident that the given underwater glider could operate under 2kt current environment with users defined heading and depth, also with the payload up to 5 kg without changing internal buoyancy.

• 한국노년학
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• v.29 no.2
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• pp.761-779
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• 2009

The purpose of this study is to analyze the factors affecting the quality of life of elderly people from the ecological perspective. Specifically, this study attempts to compare the relative contributions of the variables from the individual system, microsystem, mesosystem, and macrosystem on the quality of life of the elderly people. The subjects for this study consisted of 443 elderly over 60 years old in Daegu city, Gyeongsang-do, and Chungchung-do areas. The data were collected randomly by interviews with a structured questionnaire, and analyzed by frequencies, means, ANOVA, and hierarchial regression method. The major-findings of this study were as follows: 1. The quality of life of the elderly consisted of four factors; physical, economic, psychological, and social factors. The highest satisfaction score for the quality of life was found in psychological factors, The global satisfaction score for the quality of life was found to be relatively high. 2. Out of the individual factors influencing the quality of life of the elderly, the economic status of the respondent was found to be the most important. Out of the microsystemic factors, the most important factors were found to be the intimacy with the spouse and with the children. Out of the mesosysystemic factors, the degree of the social participation of the elderly was found to be the most significant. However, none of the macrosystemic factors were found to be important in influencing the quality of life of the elderly people. 3. The relative significances of the variables contributing to the quality of life of the elderly were analyzed using a hierarchical regression technique. It was found that there was no significant factor in social background and mesosystemic variables. On the other hand, the degree of the self-efficacy and the level of the economic status from the individual factors, and the intimacy with the spouse and the children from microsystemic factors were found to be very significant in contributing the quality of life of the elderly.