• The Journal of the Korea Contents Association
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• v.12 no.2
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• pp.222-231
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• 2012

In order determine potential correlations of multicultural family's male spouses' bicultural stress and communication with their marital satisfaction, this study surveyed male spouses of foreign female participants in a variety of multicultural family assistance programs available at national marital immigrants assistance centers and healthy family assistance centers of Korea, The results of this survey can be summed up as follows: First, with regard to subordinate categories of bicultural stress, it was found that cultural shock (M= 4.32) scored the highest mean points in bicultural stress, while perceived hostility scored the lowest mean points in bicultural stress, where the higher points indicate the higher bicultural stress. Secondly, in terms of cultural adaptation stress, it was found that the group exposed to higher cultural adaptation stress felt more satisfied at marital life. Thirdly, with regard to communication with foreign female spouses, it was found that frequently communicating group had higher marital stability. Finally, it was found that communication worked as a mediator in potential effects of bicultural stress on marital satisfaction.

• Journal of Venture Innovation
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• v.3 no.1
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• pp.87-99
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• 2020

This study empirical analysed how student's major satisfaction affected job-seeking stress. It also analysed the mean differences of major satisfaction and job-seeking stress between two groups(IPP experienced, non-experienced groups). 200 data were collected from the field survey questionnaires administered to a quota sample of university students who had IPP experience or non-experience. For hypothesis testing, the IBM SPSS Statistics 24.0 was used. As a result of empirical research analysis, first, it was found that major satisfaction had a negative effect on job-seeking stress. Among major satisfaction sub categories, subject satisfaction had negative effects on cognitive and physical stress, and relationship satisfaction also had negative effects on cognitive and physical stress. On the other hand, general satisfaction had a negative effect only on emotional stress. Second, there was a significant difference between major satisfaction and job-seeking stress. Major satisfaction of IPP experience group was high, and the job-seeking stress was low. Third, in the group of students who practiced IPP, subject satisfaction had a negative effect on emotional and physical stress, whereas subject satisfaction in the group of students who did not practice IPP had no significant effect on job-seekingt stress. In the case of relationship satisfaction, only non-practice groups had a negative effect on cognitive stress and physical stress. In the case of general satisfaction, only the IPP group showed negative effects on emotional stress. The results of this study supported the preceding studies that major satisfaction had an effect on job-seeking stress, and the study was meaningful in that it confirmed that there were differences between the IPP experienced, non-experienced groups. Based on this results, academic and practical implications were suggested.

• The Journal of Korean Academic Society of Nursing Education
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• v.22 no.3
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• pp.294-303
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• 2016

Purpose: The purpose of this study was to determine subjective happiness related factors in Korean nursing students. Methods: A purposive sample of 200 nursing students was recruited for the cross-sectional survey design. The instruments were perceived stress scale, major satisfaction scale, resilience scale, and subjective happiness scale. Data were analyzed using descriptive statistics, hierarchical linear regression, and the Sobel test for testing mediating effects. Results: The mean score of stress, major satisfaction, resilience and subjective happiness was 2.21, 3.95, 3.60 and 5.03, respectively. Perceived health status, stress_positive perception, stress_negative perception, resilience_self confidence, resilience_positivity, resilience_social support had significant effects on subjective happiness. Explained variance for the subjective happiness was 53.4%. Resilience had a partial mediating effect in the relationship between stress and subjective happiness (Sobel test: Z=-5.67, p<.001). Also, resilience had a mediating effect in the relationship between major satisfaction and subjective happiness (Sobel test: Z=5.65, p<.001). Conclusion: Based on the findings of this study, nursing intervention programs focusing on improving resilience are recommended to improve subjective happiness in nursing students.

• Journal of the Korean GEO-environmental Society
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• v.10 no.1
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• pp.5-14
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• 2009

This study is to analyze numerically the spatial behaviors of the solute transport in a spatially correlated variable-aperture fracture under the effective normal stress conditions. Numerical results show that the solute transport in a fracture is strongly affected by the spatial correlation length of apertures and applied effective normal stress. According to increasing spatial correlation length, the mean residence time of solute is decreased and the tortuosity and Peclet number (is a dimensionless number relating the rate of advection of a flow to its rate of diffusion) is also decreased. These results mean that the geometry of the aperture distribution is favorable to the solute transport as the spatial correlation length is increased. However, according to the applied effective normal stress is increased, the mean residence time and tortuosity have a tendency to increase but the Peclet number is decreased. The main reason that the Peclet number is decreased, is that the solute is displaced by one or two channels with relatively higher local flow rate due to the increment of contact areas by increasing effective normal stress. Moreover, based on numerical results of the solute transport in this study, the exponential-type correlation formulae between the mean residence time and the effective normal stress are proposed.

• The Journal of the Convergence on Culture Technology
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• v.8 no.4
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• pp.205-212
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• 2022

The study was to examine the effect that perceived stress, self-efficacy, Interpersonal relationship ability affect resilience of Humanities and Social Sciences undergraduate students. Population of this study were 330 students in B city. Data were analyzed by a real number, percentage, Mean, SD, t-test, ANOVA, Pearson correlation coefficient, logistic regression analyzation using SPSS 22.0. Resilience mean of population was 3.34±0.45. Resiilence of population had a positive correlation with self-efficacy(r=.521, p<.001), Interpersonal relationship ability(r=.678, p<.001) and had a negative correlation with perceived stress(r=.234, p<.001). The factors affected to resilience of population were self-efficacy(β=.280, p<.001), Interpersonal relationship ability(β=.394, p<.001), prceived stress((β=-.191, p<.001), R² was 53.3%. This results indicated the factors that affect resilience of Humanities and Social Sciences undergraduate students.

• Journal of Korean Society for Quality Management
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• v.25 no.1
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• pp.80-99
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• 1997

This paper considers designing the simple (2-level) constant-and step-stress ALTs minimizing the asymptotic variance of the maximum likelihood estimator of the accelaeration factor, which is defined as the ratio of the 100qth percentile at use stress to that a specified stress, for items having lognormally-distributed lives. It is assumed that (i) the log-linear relationship exists between the stress and the mean log life, (ii) the standard deviation of the log life is constant, and (iii) the cumulative exposure model holds for the effect of changing stress. For the constant-stress ALT the low stress and the sample proportion allocated to low stress are determined and for two modes of stress loading of step-stress ALTs, the low-to-high and high-to-low, the low stress and the stress change time are determined. For selected values of the design parameters the optimum plans are figured, two modes of step-stress ALTs and the constant-stress ALT are compared to each other, and the effects of the incorrect pre-estimates of the design parameters are investigated.

• Environmental Analysis Health and Toxicology
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• v.13 no.3_4
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• pp.133-142
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• 1998

Effects of phosphorous (P) and methylglyoxal (MG) on the cell number, dry weight, chlorophyll content, photosynthetic and respiratory rate, phosphate uptake and protein content of green algae (Scenedesrnus obliquus) were studied. The algal cell number from the medium treated with 0.5-1.0 mM of MG at 1/2 P or 1/4 P concentration was significantly lower than those of algae treated :with full strength of phosphrous in medium. The inhibitory effect of MG on algal cell division was enhenced at low concentration of phosphorous in medium. At the beginning of logrithmic phase of algal growth, the mean dry weight of algae from the medium without MG-treatment in 1/2 P media was significantly higher than that of algae treated with MG. After logrithmic phase of growth cycle, the mean dry weight of algae from the medium with 1.0 mM of MG-treatment in 1/4 P media was significantly lower than that of algae treated with or without MG. At logrithmic phase of algal growth, there were significant differences in the chlorophyll content among all groups of tested algae with various concentrations of P and MG. At 15 days after inoculation, the mean chlorophyll content per algal cell from the media without MG-treatment in 1/2P was significantly higher than that of other cells from MG-treated media. The adverse effect of MG at concentration of 0.5-1.0mM in 1/2 and 1/4 P media on photosynthetic rate was observed. The mean photosynthetic rate of algal cell without P and MG treatment at 15 days after inoculation was significantly higher than that of MGtreated algae. After logarithmic phase, the algal cell treated with 0.5mM of MG with full strength of phosphorous showed significantly high respiratory rate than that of other cell groups. There were significant differences in mean phosphate uptake rate among all groups of Scenedesmus obliquus at logarithmic phase. At 12 days after inoculation, phosphate uptake rate per each algal cell from the basic media without MG and P treatment was rapidly reduced which shows early introduction to stationary phase.

• Structural Engineering and Mechanics
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• v.22 no.2
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• pp.223-240
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• 2006

Taking into account the geometrical and material nonlinearities, an ultimate behavior of reinforced concrete cooling tower shell in hyperbolic configuration is presented. The design wind pressures suggested in the guidelines of the US (ACI) and Germany (VGB), with or without the effect of internal suction, are employed in the analysis to examine the qualitative and quantitative characteristics of each design wind pressure. The geometrical nonlinearity is incorporated by the Green-Lagrange strain tensor. The nonlinear features of concrete, such as the nonlinear stress-strain relation in compression, the tensile cracking with the smeared crack model, an effect of tension stiffening, are taken into account. The biaxial stress state in concrete is represented by an improved work-hardening plasticity model. From the perspective of quality of wind pressures, the two guidelines are determined as highly correlated each other. Through the extensive analysis on the Niederaussem cooling tower in Germany, not only the ultimate load is determined but also the mechanism of failure, distribution of cracks, damage processes, stress redistributions, and mean crack width are examined.

• Journal of East-West Nursing Research
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• v.24 no.1
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• pp.81-89
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• 2018

Purpose: We aimed to assess the mediating effect of fatigue on the relationship between pregnancy stress and depression during the third trimester of pregnancy. Methods: We surveyed 161 pregnant women at a hospital in Gyeonggi province in Korea from October to November, 2017. Data were analyzed by the SPSS WIN 22.0 program. Results: The mean scores of pregnancy stress, fatigue and depression were $2.09{\pm}.87$ with a range of 1~4, $2.31{\pm}0.84$ with a range of 1~4 and $0.85{\pm}0.81$ with a range of 0~3, respectively. Pregnancy stress was positively correlated with fatigue (r=.60, p<.001) and depression (r=.59, p<.001) and fatigue was positively correlated with depression (r=.48, p<.001). The mediating effect of fatigue on the relationship between pregnancy stress and depression (${\beta}=.21$, p=.010) was found. Conclusion: We found the mediating effect of fatigue on the relationship between pregnancy stress and depression. Thus, healthcare professionals should assess the pregnant woman's negative emotions in the early stage and facilitate their positive transition utilizing the assesment findings. For example, a development of interventions considering physical and psychological aspects for decreasing fatigue may improve the pregnant women's well-being during pregnancy and childbirth. In conclusion, the healthcare professionals should understand the potential problems during pregnancy and strive to enhance the positive process of pregnancy and growth of the baby.

• Journal of Digital Convergence
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• v.17 no.2
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• pp.413-421
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• 2019

This study examined the mediating effect of optimism on the relationship of middle school students' stress and happiness at school. 264 middle school students in Seoul were surveyed. The data were analyzed using descriptive statistics, t-test, correlation and multiple regression analysis. The results showed that: (1) The question means of stress and optimism were in the 'average' and 'slightly high'. The question mean of happiness at school was in the 'not happy' and 'slightly happy'. Females experienced higher level of stress than males. Males showed higher levels of happiness at school and optimism than females. (2) The stress, happiness at school and optimism were correlated. (3) The effect of stress on happiness at school was fully mediated by optimism. This study demonstrated that enhancing optimism is an effective strategy for improving the happiness at school. Finally, the findings were discussed from the convergence perspective.