• Journal of Family Resource Management and Policy Review
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• v.17 no.1
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• pp.179-198
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• 2013

The purpose of this study was to analyze the impact of parental resources and parenting stress on parenting efficacy in low-income families Furthermore, in order to verify whether parental resources function as a resilience factor, a structural model was established to assess the suitability and influence of the variables. A total of 603 parents of children and adolescents between the ages of 9-18 were selected from the data from Children and Adolescents Comprehensive Status Research (2009) by the Ministry for Health, Welfare and Family Affairs. For the analyses, SPSS WIN 18.0 and AMOS 18.0 were utilized. The major results were as follows: First, the suitability of the model was confirmed with variables presenting a satisfying fit. Second, parental resources had a negative effect on parenting stress and a positive effect on parenting efficacy. Third, parenting stress had a negative effect on parenting efficacy. Finally, a test of the structural equation model supports the hypothesis that parental resources have a significant direct effect as well as an indirect effect through parenting stress on parenting efficacy. The implications for further studies and practice were discussed.

• The Journal of Korean Medicine
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• v.17 no.2 s.32
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• pp.277-290
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• 1996

This study was aimed to evaluate the anti-pain effect of Kamikuibitang in acetic acid method and the anti-ulceration effect of Kamikuibitang in indomethacin, aspirin and immobilization stress method in rats. The results were follows; 1. The anti-pain effects of Kuibitang and Kamikuibitang were decreased compared with those of control group. 2. In indomethacin and aspirin method, the anti-ulcerative effects of experimental groups were shown compared with those of control group. 3. In immobilization stress method, the anti-ulcerative effect of experimental groups was significantly shown compared with that of control group. 4. The serum gastrin levels of Kuibitang groups showed very significant decrease in indomethacin-induced and immobilization stress-induced ulcers. The serum gastrin levels of Kamikuibitang groups showed very significant decrease in indomethacin-induced, aspirin- induced and immobilization stress-induced ulcers. 5. The serum $V_{B12}$ levels of Kuibitang groups showed very significant increase in both indomethacin-induced and immobilization stress-induced ulcers. The serum $V_{B12}$ levels of Kamikuibitang groups showed significant increase in aspirin-induced and immobilization stress-induced ulcers whereas very significant increase in indomethacin-induced ulcer. According to the above results, it was concluded that Kamikuibitang had very significant anti-ulceration effect as well as anti-pain effect on gastric ulcer in rats.

• Journal of the Korean Society of School Health
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• v.34 no.3
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• pp.200-207
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• 2021

Purpose: The purpose of the study was to investigate the effect of college life stress and self-efficacy on the well-being of nursing students in the COVID-19 environment. Methods: The subjects of the study were 247 senior nursing students at K University in W City. Data collection was conducted during the period of in-school practice from July 27 to August 10, 2020, using a structured questionnaire. For data analysis, SPSS/WIN 23.0 was used to conduct the t-test, ANOVA, correlation and multiple regression. Results: Factors affecting the subjects' well-being were grades (t=3.07 p=.002) and major satisfaction (t=2.16 p=.032) among general characteristics. College life stress (t=-5.05, p<.001) was found to have a negative effect on students' well-being, and self-efficacy (t=6.91, p<.001) was found to have a positive effect (F=46.97, p<.001). Conclusion: As a result of the study, college life stress was found to have a negative effect as a factor affecting the subjects' well-being, while self-efficacy was found to have a positive effect. In conclusion, in order to improve the well-being of nursing students, it is necessary to try various methods to improve self-efficacy and relieve college life stress.

• Journal of Physiology & Pathology in Korean Medicine
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• v.22 no.1
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• pp.115-119
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• 2008

This study was done to evaluate the antioxidant effect of Crataegi Fructus (CF) extract on the oxidative stress induced by reactive oxygen species (ROS), The human skin fibroblasts (Detroit 551) were cultured with various concentrations of hydrogen peroxide $(H_2O_2)$. The cytotoxicity of $H_2O_2-induced$ oxidative stress was performed by XTT assay for the cell viability according to the dose- and time-dependent treatment. For the protective effect of CF extract on $H_2O_2-mediated$ oxidative stress, cell viability, lactate dehydroganase (LDH) activity, and ferric thiocyanate (FTC) assay for the inhibitive activity of lipid peroxidation on CF extract were carried out. In this study, $H_2O_2-mediated$ oxidative stress was decreased cell viability dose-, and time-dependent manner and increased LDH activity compared with the control in these cultures. In the protective effect, CF extract increased cell viability and decreased LDH activity on $H_2O_2-mediated$ oxidative stress, especially, CF extract has antioxidant effect by the showing the inhibitive activity of lipid peroxidation by FTC assay. From these results, It is suggested that $H_2O_2-mediated$ oxidative stress was highly toxic, and also, CF extract showed the protective effect on $H_2O_2-mediated$ oxidative stress by showing the increased cell viability, decreased LDH activity and lipid peroxidation inhibition in these cultures.

• Journal of Digital Convergence
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• v.14 no.9
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• pp.505-514
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• 2016

The purpose of this study was to examine whether Reasons for Living play mediating roles in the links between stress and suicidal ideation, and Social Support moderate the effect of stress on Reasons for Living. In addition, the mediated moderation effect on the relationship between stress and suicidal ideation was examined. A total of 608 university students completed self-reporting questionnaire on stress, suicidal ideation, Reasons for Living and social support. The results indicated that Living on Suicidal mediated the relationship between stress and suicidal ideation, and social support moderated the links between stress and Living on Suicidal. Finally, the mediated moderation effect of social support the association between stress, Living on Suicidal, and suicidal ideation was found. These findings suggest that social support may function as a protective factor for university students' suicidal ideation.

• Journal of Advanced Navigation Technology
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• v.28 no.1
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• pp.44-50
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• 2024

This study analyzed the effect of flight stress on job satisfaction and safety culture on 193 domestic civil airline pilots. As a result of the analysis, flight stress had a negative effect on job satisfaction, and pilots with low job satisfaction had a low awareness of safety culture. In particular, there was a difference in the effect of flight stress on job satisfaction and safety culture according to the airlines and rank of pilots. This suggests the necessity of developing customized stress management programs for each airline and pilot position. The study emphasizes the importance of managing pilots' stress and improving job satisfaction to reinforce the safety culture of the aviation industry. In addition, airlines should develop strategies to strengthen safety culture by reducing pilot stress and increasing job satisfaction. The result of this study is to be used as useful basic data for finding ways to manage pilots' stress and strengthen safety culture in the aviation industry.

• Proceedings of the KSME Conference
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• 2000.04a
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• pp.908-913
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• 2000

In the process of integrity evaluation for nuclear power plant components, a series of fracture mechanics evaluation on surface cracks in reactor pressure vessel(RPV) must be conducted. These fracture mechanics evaluations are based on stress intensity factor, K. However, under pressurized thermal shock(PTS) conditions, the combination of thermal and mechanical stress by steep temperature gradient and internal pressure causes considerably high tensile stress at the inside of RPV wall. Besides, the internal pressure during the normal operation produces high tensile stress at the RPV wall. As a result cracks on inner surface of RPVs may experience elastic-plastic behavior which can be explained with J-integral. In such a case, however, J-integral may possibly lose its validity due to constraint effect. In this paper, in order to verify the suitability of J-integral, two dimensional finite element analyses were applied for various surface crack. Total of 18 crack geometries were analyzed, and Q stresses were obtained by comparing resulting HRR stress distribution with corresponding actual stress distributions. In conclusion, HRR stress fields were found to overestimate the actual crack-tin stress field due to constraint effect.

• Journal of Welding and Joining
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• v.29 no.2
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• pp.56-63
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• 2011

his paper aimed to understand the residual stress in the dissimilar metal welds of nuclear power plant. Two kinds of residual stress were considered, which caused by welding and machining. Residual stress due to mechanical machining was measured by hole-drilling technique and x-ray diffraction method for the SA508 and F316L. Weld residual stress at dissimilar metal weld between SA508 and F316L was evaluated by FEA. Residual stress profiles were obtained for the inside surface and through thickness of welds. Machining effect was also analyzed by FEA. According to the residual stress measurement, it was observed that mechanical machining can generate tensile stress on the surface of the test material. However, FEA results showed that mechanical machining did not increase the tensile stress on the surface of weld region. Further study with more elaborate measurement and numerical analysis is required to identify the effect of machining on residual stress in the dissimilar metal weld region.

• Journal of Families and Better Life
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• v.34 no.5
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• pp.99-117
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• 2016

The purpose of this study was to investigate the effect of adolescents' academic stress on academic burnout and academic engagement and the moderating effects of parental academic involvement behavior on the relation between academic stress, academic burnout and academic engagement. The main results of this study were as follows. First, adolescents' academic stress had an influence on academic burnout and academic engagement. The higher adolescents' academic stress was, the higher academic burnout and the lowerer academic engagement were. Second, adolescents'academic stress and parental adequacy results pursuit behavior influenced academic burnout. That is, the level of adolescents'academic stress and parental behavior encouraging academic progress of children caused the low academic burnout. And parental behavior encouraging academic progress of children appeared to have a moderating effect on the relation between academic stress and academic burnout. Third, adolescents'academic stress, parental behavior pursuing adequate result, encouraging academic progress and granting their children academic options influenced academic engagement. However, parental academic involvement behavior appeared not to have a moderating effect on the relation between academic stress and academic engagement.

• The Journal of the Korea Contents Association
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• v.14 no.4
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• pp.267-276
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• 2014

The purpose of the study is to examine the influence of family stress on family adaptation and investigate the mediating effect of family strength on the association between family stress and family adaptation of disabled family. As a result, family stress bas also been from multiple regression analysis revealed that family stress has a significant effect on family adaptation through family strength. Family strength is found to have a full mediation effect. In summary, the findings suggest that disabled family with higher levels of family stress are more likely to have lower family strength and lower family strength decreases the probability of conducting family adaptation. Based on these results, the researchers suggest intervention strategies that could prevent family stress, family strength and family adaptation.