• 한국생활과학회지
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• 제15권1호
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• pp.31-44
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• 2006

This study examined relationships between children's aggression and the variables such as individual, family, and school adjustment. For this study, individual variables included age, self-esteem, and game-addiction tendency. Family variables included mother's controlling parenting, child-abuse, parents' marital conflict. As for school adjustment, teacher relations, peer relations, classroom and rule adjustment in school were examined. The sample consisted of 642 children of the fifth and sixth grade in Busan. Statistics and methods used for data analysis included frequency, percentage, Cronbach's alpha, factor analysis, two-way Anova, Pearson's correlation, and Hierarchical Regression. Several major results were found from the analysis: First, boys' aggression was higher than girls'. But no age difference was found in children's aggression. Second, game-addiction tendency had a positive correlation with children's aggression. In addition, self-esteem had a negative correlation with boys' aggression. Third, mother's controlling parenting had a positive correlation with children's aggression. Child abuse had a positive correlation with boys' aggression, and parents' marital conflict with girls' aggression. Fourth, teacher relations, peer relations, classroom and rule adjustment in school had a negative correlation with boys' aggression. In addition, rule adjustment in school had a negative correlation with girls' aggression. Fifth, game-addiction tendency, rule adjustment in school, self-esteem, mother's controlling parenting and teacher relations in school were important variables predicting boys' aggression. On the other hand, game-addiction tendency and rule adjustment in school were important variables predicting girls' aggression.

• 아동학회지
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• 제35권3호
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• pp.71-92
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• 2014

Using the second year data of the Korean Child and Youth Panel Survey (KCYPS) elementary 4 panel, this study attempted to elucidate variables related to elementary school 5th graders' life satisfaction and how the variables are clustered in each gender. Analyzing the data of 2378 5th graders (boys 1180, girls 1084) indicated that variables related to their life satisfaction were self-esteem, parenting style, peer attachment, grade satisfaction, and school adjustment. Both boys and girls were clustered into three clusters. The cluster 1 children indicated the highest degrees of self-esteem, peer attachment, grade satisfaction and school adjustment levels, and they perceived parenting style more positively than the children from the other clusters. The cluster 3 children showed the opposite trends to the cluster 1 children in each of the five variables and the cluster 2 showed middle levels in all of the variables. The characteristics of the three clusters were analyzed in terms of the differences of children's life satisfaction and explanatory variables of life satisfaction.

• 한국지역사회생활과학회지
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• 제18권1호
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• pp.63-70
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• 2007

The purpose of this study is to find out how family, school and community variables influence internet behavior problems in adolescents. By focusing on sex differences, this study analyzes female as well as male behavior problems. The data used in this study are gathered from 1,046 middle and high school students in a national sampling. The results are as follows. Internet addiction is the most frequently occurring problem. A chi-square test shows that male students have higher experience rates than female students in obscene chatting and violent games. A series of logistic regressions are performed to blow the relative influence of independent variables controlling for each other. In the case of male students' internet behavior problems, region, communications with their parents, interactions with their close friends, and satisfaction with community facilities are significant variables. Interactions with friends are significant in predicting behavior problems of both female and male students. Suggestions and implications with regard to intervention strategies for adolescents are discussed.

• 대한가정학회지
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• 제45권7호
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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.

• 가족자원경영과 정책
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• 제12권1호
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• pp.41-55
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• 2008

The purpose of this study was to clarify variables affecting time management practice and the relationship between the practice and academic achievement of middle school students. Questionnaires including a time management scale were used for this study and the survey data were taken from 352 middle school students in Seoul and Gyeonggi-do. The statistical methods for the analysis were frequency, percentage, average, t-test, ANOVA and Pearson's correlation. The variables affecting student time management were gender, their standard of living, parental educational level and parental occupation. Religion and residential area were indicated as variables affecting several subscales of time management but the academic year of student had no effect on student time management behavior. The relationship between time management and the academic achievement of middle school students was slightly positive. Developing programs for time management in the field of family resource management is also necessary.

• International Journal of Aeronautical and Space Sciences
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• 제5권2호
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• pp.1-8
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• 2004

Real-Time Kinematic GPS positioning is widely used for many applications.Resolving ambiguities is the key to precise positioning. Integer ambiguity resolution isthe process of resolving the unknown cycle ambiguities of double difference carrierphase data as integers. Two important issues of resolving are efficiency andreliability. In the conventional search techniques, we generally used chi-squarerandom variables for decision variables. Mathematically, a chi-square random variableis the sum of mutually independent, squared zero-mean unit-variance normal(Gaussian) random variables. With this base knowledge, we can separate decisionvariables to several normal random variables. We showed it with related equationsand conceptual diagrams. With this separation, we can improve the computationalefficiency of the process without losing the needed performance. If we averageseparated normal random variables sequentially, averaged values are also normalrandom variables. So we can use them as decision variables, which prevent from asudden increase of some decision variable. With the method using averaged decisionvalues, we can get the solution more quicklv and more reliably.To verify the performance of our proposed algorithm, we conducted simulations.We used some visual diagrams that are useful for intuitional approach. We analyzedthe performance of the proposed algorithm and compared it to the conventionalmethods.

• 가정과삶의질연구
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• 제31권5호
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• pp.201-210
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• 2013

The purpose of this study was to investigate the possibility of discriminating a high level of school adjustment in low-income school-aged children using interpersonal-related variables(mother attachment, peer attachment) and self-related variables(ego-resiliency, self-control). The subjects were 335 children in fourth, fifth and sixth grades in 4 elementary schools in Daegu. Mean(SD), t-test, and stepwise discriminant analysis were used for data analysis. Base on the results of the discriminant analysis, the discriminant functions suggested that the best predictor for distinguishing between a high level of school adjustment in low-income school-aged children and a low level of school adjustment was ego-resiliency. Self-control, mother attachment and peer attachment reliably separated the groups. And using ego-resiliency, self-control, mother attachment and peer attachment as predictors, the discriminant analysis correctly classified 92.3% of the participants.

• 한국환경교육학회지:환경교육
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• 제18권2호
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• pp.31-43
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• 2005

In this study, after establishing assessment framework and reviewing the conceptual evolution and component of EL(Environmental Literacy) through literature review, through middle school students as population, the level of EL and relationship of its related variables were examined. The investigation was consisted of second and third grades of urban and rural middle schools in Choongbook. The used measurement methods were objective evaluation and Likert-type scale. The questionnaire instrument variables were consisted of 80 items on environmental literacy variables and six items on student gender, area of residence, environmental lesson, degree of environmental concern, environmental information, environmental activity as background variables. The major findings of this study were as follows: 1. Although the broad and obscure concept of EL has been evolved until 1992, it has been developed more systematic and precise after 1992. But there is not still an agreed concept. 2. The subordinate components of EL were consisted of cognitive, affective, and behavioral aspects. Both ecological knowledge(KEOC) and environmental skill(SKILL) were determined to serve as two powerful predictors of EL. 3. The level of EL of middle school student was showed statistically significant difference to some variables by student gender, residential area, environmental lesson, environmental concern, environmental information, and environmental activity variables. And the most influential variables of EL in middle school student were environmental skill(SKILL), and locus of control (LOC). Based on the findings of this study, the following suggestions are drawn: It should be established a precise concept on EL as the ultimate aim of environmental education both interdisciplinary cooperation and experts of environmental education and also performed further longitudinal study which assessed multidimensional variables which are able to exactly measure the EL of middle school student.

• 한국가정과교육학회지
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• 제14권1호
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• pp.1-13
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• 2002

The purpose of this study is to find out the level of purchasing behavior and related variables of Korean adolescents in Kangwon Province. and to suggest a direction of consumer education for rational purchase and of Home Economics Education. through noticing the influence of socio-demographic variables and socialization-related variables. To find out the results of this study, a survey was made using questionnaires with middle school students who live in Kang-won Province. and 472 Questionnaires were used as the analysis data. The methods of statistical analysis used for this study were Cronbach' ${\alpha}$. Frequency Distribution, Percentile. Mean. Standard Deviation. ANOVA, t-test. Duncan's Multiple Range Test, Multiple Regression Analysis. and also SPSS PC+ was used. The summaries of the results of this study were as follows. First. the level of the adolescents'purchasing behavior was the average 3.34 which is higher than the centered number 3, and the level of pre-Purchasing behavior(3.36) was higher than that of the post-purchasing behavior (3.27). Second. the adolescents' purchasing behavior showed the significant difference according to the mothers' educational level and family income. Third among the socialization-related variables. the group which had much communications with their parents and friends about purchase. the group which got much consumer education in school and their home. the group which can see much advertisements about purchase showed high level of purchasing behavior. Fourth. in the regression analysis. the consumer education in school. the communication with parents or friends were significant variables to the level of purchasing behavior. Looking into the subcategory. the communication with parents. the amount of pocket money. the father's occupation were significant variables to the level of pre-purchasing behavior, And the consumer education in school. the communication with parents or friends. the father's occupation were significant variables to the level of post-purchasing behavior.

• 대한가정학회지
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• 제42권4호
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• pp.99-118
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• 2004

This study examined different individual and environmental factors that affect children's game addiction tendency. As individual variables, game user' motivation, self-control, and self-esteem were included in the analysis. As family variables, communications with mothers, parental control of children's computer use and parental internet use were examined, as school variables, school adjustment and teacher's supervision of children's computer use, and as peer variables, peer group's attitude toward computer games were used. The sample consisted of 994 fifth and sixth grade children. Statistics and methods used for the data analysis were Cronbach's alpha, frequency, percentage, two way ANOVA, Pearson's correlation and Hierarchical Regression. Several major results were found from the analysis. First, boys were addicted more than girls. No difference was found in the addiction tendency between the 5th graders and the 6th graders. Second, game users' motivation, that is, their interest-amusement motive, avoidance motive and aggressive motive, had a positive correlation with their game addiction tendency. However, self-control and self-esteem had a negative correlation with children's game addiction tendency. Third, problematic communications with mothers and parental control of children's computer use had a positive correlation with children's game addiction tendency. Open communications with mothers had a negative correlation with children's game addiction tendency. Fourth, school adjusaent had a negative correlation with children's game addiction tendency. And peer group's attitude towards computer games had a positive correlation with children's game addiction tendency. Fifth, low self-control, peer group's attitude towards computer games, children's interest-amusement motive, avoidance motive, aggressive motive, school lesson adjustment, parental control of children's computer use and school nile adjustment were important predicting variables of boy's game addiction tendency. Avoidance motive, low self-control, interest-amusement motive, peer group's attitude towards computer games, and parental control of children's computer use were important predicting variables of girl's game addiction tendency.