• Transactions of the Korean Society of Mechanical Engineers A
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• v.24 no.5 s.176
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• pp.1288-1296
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• 2000

In this study, fatigue crack behavior between arbitrarily located defects was investigated by experiment. Especially, stress interaction between micro hole defects and fatigue cracking, and fatigue crack initiation life following the variation of location of micro hole defects were considered. In addition, crack initiation position by micro hole stress interaction and the relationship between stress concentration factor and fatigue initiation life are studied in detail.

• Journal of the Korean Society for Precision Engineering
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• v.18 no.1
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• pp.201-212
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• 2001

If defects are located far apart, fatigue cracks are independently initiated from them and gradually approach other cracks so that the fatigue life becomes influenced by the crack growth behavior of those interacting cracks. In this study, the effect of the stress interaction between defects on the fatigue crack propagation behavior is investigated experimentally and these results are verified by finite element method. In addition, fatigue crack propagation behaviors under micro hole interaction field are studied.

• Phonetics and Speech Sciences
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• v.16 no.2
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• pp.11-17
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• 2024

The goal of the current study is to investigate whether L2 learners' perceptual ability regarding epenthetic vowels is interconnected with other aspects of speech recognition, such as lexical stress, sentence focus, and vowel recognition. Twenty-five Korean L2 learners of English participated in perception experiments assessing vowel epenthesis oddity, lexical stress oddity, sentence focus oddity, and vowel identification. Results indicate that accuracy on the vowel epenthesis oddity test is influenced by both lexical stress and sentence focus, suggesting that perceptual ability regarding epenthetic vowels is influenced by the acquisition of L2 rhythmic structure at both word and sentence levels. Additionally, this study identifies a proficiency effect on vowel epenthesis recognition, implying that the influence of L1 phonotactics diminishes as L2 proficiency increases. Taken together, this study illustrates the interaction between perceptual abilities in vowel epenthesis and prosodic stress in the field of L2 speech perception.

• Journal of Digital Convergence
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• v.17 no.12
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• pp.13-22
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• 2019

The purpose of this study is to examine the effects of child interaction, marital conflict and social support on the career-interrupted women's parenting stress and to investigate the mediating effects of marital conflict between child interaction and parenting stress. The data of 8th Panel Study on Korean Children was used for this, and it was conducted descriptive statistics, correlation analysis, and multiple regression analysis on the data of 868 career-interrupted women. According to the analysis, the factors affecting career-interrupted women's parenting stress are the child interaction, marital conflict, and social support, and it showed 32.3% of explanatory power and the influence of marital conflict was the highest. It was also found that marital conflicts were partially mediated in the relation with the child interaction and parenting stress. Based on this, this study suggests the policy and practical measures to prevent and reduce their parenting stress in view of supporting the career-interrupted women's reentry of labor market in the era of work-family balance.

• Transactions of the Korean Society of Mechanical Engineers
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• v.17 no.2
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• pp.416-425
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• 1993

To investigate the characteristics of the merged jet arising from the interaction of two opposing curved wall jets over a circular cylinder in still air, mean velocity, Reynolds stresses, triple moments and integral length scale were measured using hot-wire anenometry. The turbulent kinetic energy and shear stress budget were evaluated using the measured data. The variations of the Reynolds stresses, the triple moment and integral length scale are severe in the interaction region. The pressure diffusion terms are found to be very large when compared the other terms in the interaction region. The distributions of the Reynolds stress and the triple moment in the similar region are found to be similar to those of conventional plane jets.

• Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
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• 2001.05a
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• pp.332-337
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• 2001

The objective of research is to clarify the interaction between dislocations and precipitates during high temperature creep deformation behaviors of high Mn austenitic steels. After measuring the internal stress in minimum creep rate at 873K, a transmission electron microscope (TEM) observation was performed to investigate the interaction between dislocations and precipitates during high temperature creep deformation. The band width of effective stress and internal stress increased when the nitride precipitates distribute more densely. Fine nitrides disturbed the dislocation movement with pinning the dislocations and perfect dislocations were separated into Shockley partial dislocations by fine nitrides. Coarse nitrides disturbed the dislocation movement with climb mechanism.

• Korean Journal of Child Studies
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• v.36 no.2
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• pp.131-143
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• 2015

This study sought to investigate the influence of mother's marital conflict and avoidance coping strategies with marital conflict on school aged child-rearing stress, on the focus of interaction mother's marital conflict and avoidance coping strategies with marital conflict. The subjects comprised 234 mothers of school aged children in Daegu and Keoungbok. The collected data were analyzed by mean of t-test, Pearson Correlation, and Hierarchical regression using SPSS Win 19.0. The results were as follows. (1) Mother's marital conflict significantly influenced on school aged child-rearing stress. However mother's avoidance coping strategies with marital conflict on school aged child-rearing stress did not. (2) The interaction effects of mother's marital conflict and avoidance coping strategies with marital conflict on school aged child-rearing stress was observed.

• Korean Journal of Childcare and Education
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• v.11 no.1
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• pp.461-480
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• 2015

The purpose of this study was to examine the effects of mothers' parenting beliefs and supportive interaction on maternal parenting stress. It also examined variations of the results by household income levels and mothers' employment status. Participants of the study were 770 mothers of children aged 23-31 months who were a part of the 2010 wave of the National Survey for Panel Study on Korean Children. The analyses revealed that parenting stress was affected by mothers' parenting beliefs and supportive interaction. Mothers' supportive interaction has been shown significantly to predict parenting stress in all four groups of this study. The results demonstrated that the strength of the relationship between parenting stress and parenting beliefs and reciprocal interaction varied based on the combination of income and work status. These findings suggested that income and employment status are important to examine collectively.

• Journal of Korean Academy of Nursing
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• v.47 no.6
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• pp.854-863
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• 2017

Purpose: The present study is a descriptive cross-sectional study of cause-and-effect relationship, which used the $7^{th}$ year data of the Panel Study on Korean Children, to investigate the effects of parenting stress, depression, and family interactions of the parents of early school-age children on children's subjective happiness. Methods: The present study included data of 1419 pairs of parents who participated in the mother and father survey of the Panel Study on Korean Children. The effects of parenting stress, depression, and parental family interactions on children's subjective happiness were analyzed as actor and partner effects using path analysis. Results: Parenting stress had an actor effect on depression; maternal parenting stress (${\beta}=-.21$, p<.001) and depression (${\beta}=-.30$, p<.001) had an actor effect on maternal family interaction; and paternal parenting stress (${\beta}=-.18$, p<.001) and depression (${\beta}=-.17$, p<.001) had a partner effect on maternal family interaction. Paternal parenting stress was found to have an actor effect on paternal family interaction (${\beta}=-.30$, p<.001), and parental depression was found to have actor effect (${\beta}=-.23$, p<.001) and maternal depression had a partner effect on paternal family interactions (${\beta}=-.22$, p<.001). Children's subjective happiness was found to have a statistically significant relationship with maternal family interaction (${\beta}=.40$, p<.001). Conclusion: The significance of the study is in its provision of basic data for adjusting parents' family interactions that are closely related to the growth and development of children by confirming the effect of parents' parenting stress, depression, and family interaction on children's subjective happiness.

• Korean Journal of Childcare and Education
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• v.12 no.6
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• pp.19-39
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• 2016

The present study examined differences in children's behavior problems and peer interaction, and parental factors including self-esteem, depression and childrearing stress between atopic dermatitis(AD) and normal(non-AD) children in each gender, and analyzed the effects of the parental factors on the two variables of AD children. 165 AD and 1176 non-AD children of age 5 were selected from the 6th year data of the Panel Study on Korean Children. The results from t-test and multiple regression are as follows. First, only AD boys showed a higher level of behavior problems than non-AD boys, but peer interaction showed no difference between AD and non-AD groups. Compared with non-AD children's parents, mothers of AD children showed a higher stress level and mothers of AD boys had a higher depression level. But there were no differences in maternal self-esteem and paternal factors between the groups. Second, AD boys' behavior problems were related to maternal factors and paternal stress, and some characteristics of AD girls' behavior problems were related with some parental variables. But peer interaction of AD children had no relation with parental factors. Third, behavior problems were influenced by maternal stress in AD boys and influenced by maternal depression and parental self-esteem in AD girls.