• Korean Journal of Child Studies
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• v.18 no.1
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• pp.109-123
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• 1997

The purpose of this study was to examine the relationships between adolescent sensation-seeking and risk behavior. This study was based on Zuckerman's model which states that the higher the sensation-seeking score, the higher the risk behavior score. The subjects were 460 third year high school adolescents in Seoul. Instruments were the Arnett Inventory on Sensation-Seeking and questionnaires on risk behavior as well as demographic variables. Statistical procedures were T-test, F-test, correlation, and heirarchical regression analysis. Sex was the only demographic variable related to sensation-seeking scores; there were differences in risk behavior score by father's education, mother's education and father's occupation; adolescent sensation-seeking and demographic variables (father's education, mother's education, and father's occupation) influenced adolescent risk behaviors.

• Proceedings of the Safety Management and Science Conference
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• 2009.11a
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• pp.387-397
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• 2009

In these OECD countries, left-wingers Government focus on unemployment, but right-wingers Government cares more about inflation. It is that inflation and unemployment don't have differential effects across rich and poor and the happiness levels of these two groups are unaffected by identity of the Government in power. The poor people choose to left-wingers Government, but rich people prefer to right-wingers Government. I estimate whether above opinion is correct or not. Especially I check how my results change when I control for aggregate economy activity and government consumption, two variables that could be correlated with inflation and unemployment and affect each Government's happiness differentially. This paper, and I believe much of the happiness literature, can be understood as an application of experienced utility, a conception that emphasis the pleasures derived from private consumption and sentiment of it. In Granger Causality test, private consumption sentiment index related with industrial production interactively in Korea. The business cycles affect on private consumption sentiment index.

• Proceedings of the Korean Society for Technology of Plasticity Conference
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• 2007.10a
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• pp.254-257
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• 2007

In this paper, anisotropic tensile properties of the AZ31B Mg-alloy sheet are obtained with the tensile test at elevated temperatures. Change of microscopic structures and the hardness is inspected after the solution heat treatment process in order to confirm the micro-structural stability of the used sheet metal. Results obtained from tensile tests show that it is very difficult to apply the conventional modeling scheme with the assumption of strain hardening to the forming analysis of the magnesium alloy sheet which shows the strain-softening behavior at the elevated temperature.

• Journal of Korean Society of Water and Wastewater
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• v.25 no.5
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• pp.719-724
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• 2011

The excessive phosphate in water causes eutrophication which destroys water environment. In this study, mesoporous silica was synthesized and several functional groups were attached on it. Samples were tested to identify the ability to remove phosphate. The structures of synthesized materials were analyzed by X-ray diffractions (XRD), Fourier transform-infrared (FT-IR) and surface area analysis, Brunauer-Emmett-Teller (BET). To determine the maximum phosphate adsorption capacities and sorption rate, the equilibrium test and kinetic test was conducted. Among functionalized SBA-15 samples, pure SBA-15 didn't adsorb phosphate but Al-SBA-15 and Ti-SBA-15 showed good performances to remove phosphate. The maximum phosphate adsorption capacity of Al-SBA-15 was efficient compared to other adsorbents.

• Journal of Family Resource Management and Policy Review
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• v.19 no.4
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• pp.141-161
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• 2015

The purpose of this study was to explore the differences in time perspective by socio-demographic variables and to investigate the effect of time perspective on time management and life satisfaction for college students. Questionnaires including time perspective, time management, and life satisfaction scales were used for this study. The survey data from 382 college students were analyzed by frequency, percentage, mean, standard deviation, t-test, ANOVA, Duncan test, Pearson's correlation analysis, and stepwise regression. The time perspective, composed of four factors future insensibility and present, past, and future orientation, differed according to the sex, academic grade, and specialty of the college students. The time perspective of the college students and the socioeconomic status of their households were investigated as effective variables on time management and life satisfaction. Based on these results, the implications for research and policy on the time perspective of college students were discussed.

• Journal of the Korean Home Economics Association
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• v.31 no.4
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• pp.37-51
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• 1993

The Objects of this study are: 1. To compare the housework time of housewives by region and employment status. 2. To compare the economic value of housework by region and employment status. 3. To evaluate the economic value of housework by each method. The subjects of this study were 815 housewives living in Taegu and Kyungsangpookdo. The statistics used for data analysis were frequency, percentile, T-test, ANOVA and Seheffe test by SPSS PC programs: 1) The average housework time was 7.8hours per day. Full-time housewives spent 8.2hours and employed housewives spent 6.7hours to housework. 2) Partially there were significant difference in economic value of housework by employment status. 3) Estimates of economic value of housework by each method of evaluation are : (unit : won) sample mean method monthly (1) Specialized substitute method 587,080 (2) Overall substitute method 760,640 (3) Opportunity cost method 556,060 (4) Reservation wage method 534,070 (5) Subjective evalution method 644,540

• Korean Journal of Child Studies
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• v.10 no.1
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• pp.64-78
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• 1989

The present study investigated children's self-perceived competence as related to (1) their perception of parental warmth and control (2) age and sex of child (3) the relationship of this perception to parents' educational level and children's sex. The subjects were 303 fourth and sixth grade children selected from three elementary schools in Seoul. The instruments were a children's self-perceived competence scale, and a perception of parental warmth and control scale. Frequencies, percentiles, mean, t-test, one-way-ANOVA, and $Scheffe{\acute{e}}$-test were used for data analysis. There were significant differences in children's self-perceived competence by perception of parental warmth and control. The children who perceived more parental warmth and control perceived themselves higher in cognitive and social competence and in self-worth. Children whose parents' were college graduates perceived highest parental warmth. Fourth grade children perceived themselves higher than sixth grade children in cognitive competence and in global self-worth. Boys perceived themselves higher than girls in physical competence. Boys perceived higher parental control than girls.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.21 no.3
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• pp.264-274
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• 2014

Purpose: This study was done to determine inpatient fall rates in an acute hospital setting and to explore risk factors and characteristics across clinical departments. Methods: The medical records and standardized fall reports of 416 patients admitted between January 1 and December 31, 2012 were reviewed. Descriptive statistics and statistical tests were used, including: t-test, ${\chi}^2$-test, ANOVA. Results: The total fall rate per 1,000 inpatient days was 0.49. Fall rate, fall risk factors and characteristics such as age, type of fallers and mean MFS (Morse Fall Scale) differed significantly among clinical departments. Conclusions: The analysis results show that the fall rates, fall risk factors and characteristics of acute hospital inpatient falls varied significantly across clinical departments. The findings of this study suggest that hospitals should consider differences in fall related characteristics across clinical departments when implementation fall prevention strategies and interventions.

• Journal of Korean Academy of Nursing
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• v.37 no.5
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• pp.635-644
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• 2007

Purpose: This study examined what characteristics and variables predict participation in support groups for women with breast cancer. Method: 282 women with breast cancer from 4 hospitals located in Busan were included in the study. Data was measured on each participant from September 2006 to February 2007. Data was collected using structured researcher-administered sheets and analyzed by descriptive statistics, t-test, chi-square test and logistic regression analysis. Results: The clients reported medium levels of illness perception, anxiety and depression, stress with coping, social support and self-efficacy. 48.9% of women with breast cancer participated in support groups. Significant influencing factors on the participation in support groups were 'operation time(+)', 'illness perception(+)', 'social support(-)', and 'self-efficacy(+)' Those variables explained 73.4%. Conclusion: It is necessary to develop a strategy or promoting program for promotion of illness perception and self-efficacy of women with breast cancer. Thus, it is essential to provide participation to a support group to a women with breast cancer.

• Journal of the Korean Home Economics Association
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• v.34 no.4
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• pp.33-47
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• 1996

The purpose of this study was to survey the stressor, frequency of the stressor, level of the stress perceived by children in Korea. The subject were 417 children of 80 second graders, 117 third graders, 111 fourth graders and 109 fifth graders selected from three elementary schools in Pusan(214 male and 203 female). A questionnaire consisting of 70-item stress scale for children and demographic questions was used for mother. Statistics used for data analysis were frequency, ANOVA, and t-test. The major finding of this study were as follows: 1. Events receiving the highest ratings for magnitude of badness were mainly family related (parents separating; gradd parents getting sick/dying; parents getting sick). 2. Events receiving the highest ratings for frequency of occurrence were test, fighting with siblings, being picked on by other kids, staying home alone. 3. There appear signigcant differences for children's perception of stress due to the grade and the socioeconomic status.