• School Mathematics
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• v.4 no.1
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• pp.63-78
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• 2002

This research's purpose is to investigate follows. 1. How do middle school teachers recognize the mathematical communication globally? 2. If we classify the modes of mathematical communication as written, spoken, graphic and active ones, how much do teachers use them and how do the students' communication ability come as teachers judge? 3. What are teachers' thinking, the present condition and the future indication for the application of mathematical communication with computer? 4. Do teachers evaluate their students' communication ability? If then, what is the assessment rubric of student's communication ability? The results are analyzed by frequency analysis including percentile and free writings are arranged by similar responses. The result of this study is that global recognition for mathematical communication, current state for students' concrete performance of mathematical communication, and assessment of mathematical communication & proposals are very lacking.

• Korean Journal of Child Studies
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• v.15 no.2
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• pp.55-68
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• 1994

A survey analysis of home video games was carried out for 1,018 elementary school children. Children responded to a questionnaire consisting of sociodemographic variables, degree of game participation(frequency and mean time), control behavior(eg. resting during games, lightening interior), and physical symptoms(eg. eyestrain, headache, trembling, paralyses) during and/or after playing games. Statistical analysis was done by frequency, percentile, and chitest. The results showed that many children enjoyed video games frequently and played continually, that few children did control behavior during games. Main variables related to degree of game playing and control behavior were sex, game experience, parent's education, and mother's activity. In particular, the results implied that the level of physical symptoms during and/or after game differed by lighting factors.

• The Korean Journal of Ecology
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• v.23 no.6
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• pp.435-438
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• 2000

Diameter distributions describe forest stand structure information. Prediction equations for percentiles of diameter distribution and parameter recovery procedures for the Weibull distribution function based on four percentile equations were applied to develop prediction system of even-aged slash pine stand structure development in terms of the number of stems per diameter class changes. Four percentiles of the cumulative diameter distribution were predicted as a function of stand characteristics. The predicted diameter distributions were tested against the observed diameter distributions using the Kolmogorov-Smirnov two sample test at the ${\alpha}$=0.05 level. Statistically, no significant differences were detected based on the data from 236 evaluation data sets. This stand level diameter distribution prediction system will be useful in slash pine stand structure modeling and in updating forest inventories for the long-term forest management planning.

• Journal of Families and Better Life
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• v.9 no.2
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• pp.285-302
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• 1991

This purpose of this study was to analyze the perception of household work's value between husbands and wives. The data were collected using questionnaire and in-depth interview method for this purpose. 297 couples for questionnaire and 20 couples for interview were sampled. The data were analyzed by the statistical method such as frequency, percentile, paired t-test, t-test. The major findings were as follows; 1) The wives played primary role in doing household work. 2)the level of husbands's social value perception of household work was higher than wives's but the differences between them was not significant statistically. 3) The level of economical value perception of household work between husbands and wives was lower than the level of their social value perception.

• Journal of Families and Better Life
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• v.9 no.2
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• pp.323-343
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• 1991

The purpose of this study is to examine the relationship among stressor(role conflict), coping strategy, and psychological well-being toward dual-career wives. For this purpose data were collected form 117 dual -career wives. The statistical methods used for data analysis were frequency distribution. percentile, Pearson's correlation and multiple regression. The results were as follows; 1)The general tendency of the stressor level of dual-career wives was slightly over the mid-point scores, 2.5 and the level of psychological well-being was relatively high. Also, the degree to which dual-career wives used coping strategies was relatively high. 2)Role conflicts were negatively related to psychological well-being. 3)Coping strategies were positively related to psychological well-being. 4)The degree of the negative influence which role conflicts had on psychological well-being was lower int he group using a high degree of coping strategies than in the group using a low degree of coping strategies.

• Journal of Families and Better Life
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• v.9 no.2
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• pp.19-35
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• 1991

The Purpose of this study is to search a tendency of financial disagreement and to identify the variables influencing on financial disagreement of husbands and wives. for this purpose, reviewing literatures and empirical research were conducted. The sample was selected from the husbands and wives living in Masan, Changwon and Jinhae. Among 336 respondents. 111 husbands and 225 wives were finally selected as datum sources. The data were analyzed by the statistical method such as frequency distribution percentile ,ANOVA. Peason's correlation and Regression analysis. The main results were as follows; 1) Most husbands and wives showed th high level of financial disagreements. 2) As for the related variables, socio-demographic and psychological variables such as husband's education. family income, communication and financial management behavior had turned out to be significant on the financial disagreement of wives. As for the husband's financial disagreement, husband's education and family income had a significant influence. 3) There were negative correlation between the financial management behavior and the financial disagreement of husbands and wives(r=-0.22. -0.35). 4) the family characteristics which were the best predictors of financial disagreement included; family income, financial management behaviro of husbands and wives.

• Journal of Families and Better Life
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• v.9 no.2
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• pp.253-265
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• 1991

The purpose of this study was to investigate conflict management in family purchase behavior of urbanite by applying a systems approach. For this purpose, 230 questionnaire were distributed to the married men and women in Seoul. The 216 data were analyzed by Frequency, Percentile, Mean, t-test, ANOVA, Duncan's Multiple Range Test. The result were as follows. 1) According to the type of goods, the level of marital conflict in purchase decision making had differences significantly 2) According to the type of goods and the level of conflict, conflict management had differences significantly. 3) According to the level of conflict and the basic environmental characteristics, purchase management satisfaction had differences significantly. Through these results, the applicability of systems approach to family purchase behavior was shown． Family purchase behavior could be understood in environmental suprasystem, with considering the relationship of subsystem's components.

• Journal of Families and Better Life
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• v.16 no.4
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• pp.183-196
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• 1998

The purpose of this study was to investigate the discretionary consumption expenditure of Korean urban housewives and the factors contributing to the discretionary consumption expenditure. 535 housewives living in Seoul and Gyungki district were selected and frequencies percentile means standard deviation and multiple-regression analysis were utilized. The results of this study were as follows: First the monthly discretionary consumption expenditure of Korean urban housewives was 592,500won. Particularly the level of clothing expenditure for urban housewives of 135,700won was found to be the highest expenditure among other discretionary expenditures while the level of transportation expenditure of 68,100won was found to be the lowest expenditure. Second educational attainment employment status conspicuous tendency of consumption and contribution to household economic of urban housewives husband's job the number of children monthly income debt ownership and home ownership were ignificant variables on each category of discretionary consumption expenditure while age future economic expectation egion and total asset were not significant variables. Third employment status conspicuous tendency of consumption husband's job the number of children monthly income and debt ownership were related to discretionary consumption expenditure of Korean urban housewives.

• Journal of Families and Better Life
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• v.15 no.3
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• pp.59-72
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• 1997

The purpose of this study is to investigate housewife's housework time and the expenditure for time-saving goods and service at the lifecycle stage and to identify the relationship between demographic characteristics and these two variables. The data is collected by using questionnare distributed to 412 housewives living in Seoul and around new two cities. The data is analyzed using Mean Frequency Percentile One-way ANOVA Pearson's Correlation and Regression,l The result of this research is as follows; 1. Housewife's housework time has significant relationship with the lifecycle stages (p<0.01) And the most influencial factor to it is housewife's employment and the next are domestic helper monthly household income and housewofe's age(p<0.01) 2. The expenditure for time-saving has most significiantly related to the lifecycle stages. And the other influencial factors to it are houswife's employment monthly household income and housewife's age(p<0.001) The explanatory power of al variables is 36%.

• Journal of Families and Better Life
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• v.15 no.3
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• pp.163-180
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• 1997

The purpose of this study were to identify the differences between the demand for education program and the demand for counseling program of family welfare and to analyze the relation between demographic characteristics and the demand for family welfare service program For these purposes, total sample of 909 women those residing in Seoul, Inchon, Taejun, Taegu, Pusan, Kwangju, Chungju, Junju and Choonchun, were selected. Statistics were frequencies, means, percentile, cross-tabulation, t-test and Anova. The results were as follows. First, in family welfare service program on children and adolescents, the improvement in family living, consumption, retirement planning, health management, protection of environment and resource, volunteering and the advance of living culture, the demand for education program were higher than the demand for cunseling program. In particular, demands for both education program and counseling program on children and adolescents were the highest. Second, age, residence and income had very significant effects on the demands for both education program and counseling program. By understanding these differences in the demand for education program and counseling program of family welfare, practitioners and educators may be able to develop family welfare service program to solve family problems.