• Transactions of the Korean Society of Mechanical Engineers A
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• v.33 no.4
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• pp.346-352
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• 2009

In the present study, the Weibull statistical analysis using the Monte-Carlo simulation has been performed to investigate the micro-Vickers hardness measurement reliability considering the variability. Experimental indentation test were performed with a micro-Vickers hardness tester for as-received and quenching and tempering specimens in SCM440 steels. The distribution of micro-Vickers hardness is found to be 2-parameter Weibull distribution function. The mean values and coefficients of variation (COV) for both data set are compared with results based on Weibull statistical analysis. Finally, Monte-Carlo simulation was performed in order to evaluate the effect of sample size on the micro-Vickers hardness measurement reliability. For the parent distribution with shape parameter 30.0 and scale parameter 200.0 (COV=0.040), the number of sample data required to obtain the true Weibull parameters was founded by 20. For the parent distribution with shape parameter 10.0 and scale parameter 200.0 (COV=0.1240), the number of sample data required to obtain the true Weibull parameters was founded by 30.

• Korean Parent-Child Health Journal
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• v.19 no.1
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• pp.33-44
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• 2016

Purpose: The purpose of this study is to identify the factors influencing the death attitude of nursing students. Methods: A survey was administered to 350 nursing students in two university located in D city, Korea. data were collected for 40 days from August 1 to September 10, 2015 by using self-report questionnaires. Collected data were treated with the IBM (SPSS) Program 21.0 program for frequency and percentage, mean and standard deviation, ANOVA, $Scheff\acute{e}$, Pearson's correlation coefficient, and multiple regression analysis. Results: As for mean points in the subareas of death attitude, the nursing students scored a mean of $5.4{\pm}0.8$ in neutral acceptance, $4.1{\pm}1.1$ in fear of death, $3.5{\pm}1.2$ in approach acceptance, $2.9{\pm}1.3$ in death avoidance, and $2.8{\pm}1.4$ in escape acceptance. The factors influencing the death attitude of nursing students was most influenced by self esteem, social support, spiritual wellbeing, and life satisfaction. Conclusion: The importance of this study is that the influencing factors such as self esteem, social support, spiritual wellbeing, and life satisfaction were identified. These influencing factors should be considered the program development for nursing students to improve the positive attitude of death.

• Korean Parent-Child Health Journal
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• v.10 no.2
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• pp.99-109
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• 2007

Purpose: The purpose of this study was to examine the effects of providing information on Stress and maternal role confidence of pregnant women with preterm labor. Methods: The sample were 66 pregnant women with preterm labor admitted at 1 hospital in Busan. In the subjects, 33 were the experimental group and 33 were the control. Data was collected from March 1st to October 31st, 2007. A hand-out including the knowledge of preterm labor, fetus state and curing process. The tool for the stress had 14 questionnaires including the levels of anxiety and depress. And the tool for the maternal role confidence had 23 questionnaires. The data analyzed by $X^2$-test, t-test and pearson correlation coefficient with SPSS 12.0/pc program. Results: After providing information, the stress of the experimental group decreased significantly than the control(t=1.95, p=.048). And the maternal role confidence of the experimental group increased significantly than the control(t=-2.40, p=.016). There is a significant correlation between the stress and maternal role confidence(p<.01). Conclusion: The special program or educational nursing intervention should be created for each pregnant women with preterm labor and ante-natal nursing service may assessed and consulted on anxiety-depression and maternal role confidence.

• Korean Parent-Child Health Journal
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• v.8 no.1
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• pp.64-74
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• 2005

Purpose: The purpose of this study was to identify the effects of self-esteem, family functioning, social support on health-promoting behavior and to investigate the factors affecting health-promoting behavior in adolescents. Method: The participants in this study were 181 students of high school located in Seoul and Daejon. The data were collected from November 1 to December 18, 2004. The date were analyzed with descriptive statistics, t-test or ANOVA, Pearson Correlation Coefficient and stepwise multiple regression. Result: Health-promoting behavior in adolescents was significantly different according to sex, grade, their father's school career and economic status. There was a Significant correlation between health-promoting behavior, self-esteem, family functioning and social support. Social support was a predictor of health-promoting behavior and accounted for 32% of the variance. Family functioning and self-esteem were also predictors of health-promoting behavior and accounted for 12% of the variance. Conclusions: This findings suggest that the program and strategies that increase health-promoting behavior by promoting self-esteem, family functioning and social support should be developed in adolescents.

• Journal of Korean Home Economics Education Association
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• v.9 no.2
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• pp.47-67
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• 1997

The purpose of this study was to investigate the middle school students’and their parent’s perception of the 6th Home Economics Education curriculum, their learning satisfaction, and the students’s perceived learning effect, focusing on the areas of human development and family relations. The subjects of this study were 392 middle school students, their parents and 51 Home Economics teachers in Pohang and Seoul. Data were analyzed by frequency, percentage, test, F test, pearson’s product correlation coefficient, and $\chi$(sup)2 test, Schff post hoc test using the SAS computer program. The result of this study were that (1) the middle school student’s and their parent’s perception of the 6th Home Economics Education Curriculum, in general, was very positive. (2) Students, teachers and parents showed high levels of learning satisfaction with the areas of human development and family relations. (3) Student’s perceived learning effect on the areas of human development and family relations was considerably high.

• Korean Parent-Child Health Journal
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• v.14 no.1
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• pp.9-17
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• 2011

Purpose: The objective of this study is to investigate the knowledge and attitude on the contraception and induced abortion in female high school students for providing the fundamental data in developing a practical sexuality education program for the healthy conception and childbirth in female high school students who are in the child-bearing age. Also, this study provides some foundational data for developing prevention education, counsel, and nursing intervention programs. Methods: Data were collected from 270 high school girls by self-report questionnaires from August 1, to September 31, 2010. Data was analyzed by percentage and Pearson correlation coefficient using SPSS/WIN 17.0. Results: The correct rate of contraception and induced abortion were 43.3% and 48.8% respectively. Participants had a moderate attitude toward contraception and a permissive attitude toward induced abortion. Participants who had high score and home sex education were higher correct rate than any other. Conclusion: This study indicates that efforts should be made to provide education on contraception and induced abortion to high school girls to increase awareness. Also, educational programs should be designed to improve knowledge as well as promote a more positive attitude toward contraception and induced abortion.

• Journal of Families and Better Life
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• v.10 no.2
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• pp.75-85
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• 1992

The purpose of the present study was to examine the relationship between children's locus of control and their parents. In addition, this study investigated socio-demographic variables of locus of control in children and their patents. The subjects of this study were 269 elementary school children in the 5th and 6th grade and their parents. To assess children's locus of control, the inter -external locus of control scale developed by H.K. Lee(1980) was used. The locus of control scale designed by J. W. Jo(1989) was administered to parents. The data of the study were analysed with t-test, one was ANOVA and Scheffe's test. Also, Pearson's correlation coefficient was computed. The results of this study were as follows. 1)There were significant differences in children's locus of control according to the children's sex, parent's educational background and family income. Boys were more internal than girls. Children with parent who had higher educational backgrounds were more internal than others. Also, children in higher family income were more internal those in lower educational background and family income. Also parents with religion were more internal than those without religion. 3)children's locus of control was significantly correlated with their parents . Paternal locus of control was significantly correlated with their daughter's and maternal locus of control with their sons'.

• Research in Community and Public Health Nursing
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• v.11 no.2
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• pp.556-565
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• 2000

The purpose of this study was to investigate the relationship between perceived stress. self respect & stress response of high school students to provide the basic data for nursing intervention programs in order to manage stress in students. The subject of this study was 279 students (male; 179. female; 100) in high school. Seoul. Korea. during the period from July. 2000. The instruments for this study was a stress management scale developed by Park Young Ae(l996), a self respect scale by Coopersmith (1967) and a physical. emotional response scale to stress by Ro, Jae Hak(1991). The data was analyzed by descriptive statistics, t-test. Pearson correlation coefficient. The results of analysis were as follows: 1) Total perceived stress between males & females didn't show a significant difference but subgroups of stress, 'parent' & 'friend' showed significant differences. Male students were experienced in 'parent' stress than females and female students were more experienced in 'friend' stress than males. 2) A significant negative correlation was revealed between perceived stress & self respect. 3) A significant positive correlation was revealed between self respect & stress response. The result of this study lead us to the suggestion that for high school students. the development of stress management methods for improving self respect should be expanded.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.16 no.5
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• pp.1064-1070
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• 2012

Nowadays, image processing has been applied in a variety of fields. In order to preserve the high quality of visual the degradation phenomenon for images should be removed. Noise is one of the representative elements cause of the degradation phenomenon and AWGN(additive white Gaussian noise) always damages images. In this paper, an mixed filter algorithm, which is based on parallel denoising method, is proposed to suppress AWGN. This algorithm parallels the spatial domain wiener filter and the wavelet domain thresholding method which thresholding function is selected based on scale level. The proposed modified thresholding function which considers the dependency between parent and child coefficient performs well on suppressing noise.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 1998.06b
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• pp.189-194
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• 1998

We introduce a new zerotree scheme that effectively exploits the inter-scale self-similarities found in the octave decomposition by a wavelet transform. A zerotree is useful to efficiently code wavelet coefficients and its efficiency was proved by Shapiro's EZW. In the coding scheme, wavelet coefficients are symbolized and entropy-coded for more compression. The entropy per symbol is determined from the produced symbols and the final coded size is calculated by multiplying the entropy and the total number of symbols. In this paper, were analyze produced symbols from the EZW and discuss the entropy per symbol. Since the entropy depends on the produced symbols, we modify the procedure of symbolic streaming out for the purpose. First, we extend the relation between a parent and children used in the EZW to raise a probability that a significant parent has significant children. The proposed relation is flexibly extended according to the fact that a significant coefficient is highly addressed to have significant coefficients in its neighborhood. The extension way is reasonable because an image is decomposed by convolutions with a wavelet filter and thus neighboring coefficients are not independent with each other.