• 한국보육지원학회지
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• 제13권1호
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• pp.107-124
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• 2017

Objectives: The purpose of this study was to investigate the effects of children's pride and shame on their interactive peer play, mediated by their daily stress. Methods: The participants of this study were 172 five-year-old children (80 boys and 92 girls) attending kindergartens or child-care centers in Chungbuk, Korea. The data were analyzed by descriptive and correlational analyses, and structural equation modeling using SPSS 19.0 and AMOS 21.0. Results: Children's shame had a significant indirect effect on their interactive peer play, including play-disruption, play-disconnection and play-interactions, mediated by daily stress; children's shame had a significant direct effect on play interaction. However, children's pride did not have a direct effect on daily stress and an indirect effect on their interactive peer play. In other words, high levels of shame among children led to high perceived daily stress. In turn, perceived daily stress increased play-disconnection and play-disruption, while it decreased play-interactions. Meanwhile children's shame led to a low level of play-interaction among young children. Conclusion/Implications: The results imply that children's perceived shame would influence their behaviors in social contexts as well as their psychological wellbeing such as the level of daily stress.

• Journal of Welding and Joining
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• 제17권6호
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• pp.84-89
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• 1999

Most of ferrous b.c.c weld materials may experience martensitic transformation during rapid cooling after welding. It is well known that volume expansion due to the phase transformation could influence on the relaxation of welding residual stress. To apply this effect practically, it is a prerequisite to establish a numerical model which is able to estimate the effect of phase transformation on residual stress relaxation quantitatively. For this purpose, the analysis is carried out in two regions. i.e., heating and cooling, because the variation of material properties following a phase transformation in cooling is different in comparison with the case in heating, even at the same temperature. The variation of material properties following phase transformation is considered by the adjustment of specific heat and thermal expansion coefficient, and the distribution of residual stress in analysis is compared with that of experiment by previous study. consequently, in this study, simplified numerical procedures considering phase transformation, which based on a commercial finite element package was established through comparing with the experimental data of residual stress distribution by other researcher. To consider the phase transformation effect on residual stress relaxation, the transition of mechanical and thermal property such as thermal expansion coefficient and specific heat capacity was found by try and error method in this analysis.

• 한국치위생학회지
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• 제16권1호
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• pp.53-59
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• 2016

Objectives: The purposes of this study is to examine the relationship between emotional labor and burnout among dental hygienists. Methods: A self-reported questionnaire was completed by 247 dental hygienists from September 4 to October 9, 2014. The questionnaire consisted of emotional labor, job burnout, and job stress. Emotional labor included frequency of emotional expression, compliance with emotional regulation, emotional diversity, and emotional dissonance by the instrument pf Morris and Feldman. Job burnout was adopted from Maslach burnout inventory(MBI). Job stress was adpoted from instrument of Chang. Except 13 incomplete answers, 234 data were analyzed by AMOS 18.0 and SPSS 18.0 program. Results: The emotional labor has a significant positive relation to the job burnout. There was a statistical significance between emotional labor and job stress. Job stress had a positive relation to job burnout. Job stress had a mediating effect between emotional labor and job burnout. Emotional labor had a direct effect on the job burnout. Job stress also had a mediating effect on job burnout. Conclusions: It is necessary to improve working environment that can enhance emotional balance and to develop job stress management program.

• 한국간호교육학회지
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• 제25권1호
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• pp.125-135
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• 2019

Purpose: This study was conducted to determine the mediator effect of social support in the association between stress for college life and depression among nursing students. Methods: The participants of the study were 201 university students in A and C cities. Self-report questionnaires were used to measure the variables. In the data analysis, the SPSSWIN 25.0 program was utilized for descriptive statistics, Pearson's correlation, Sobel test and multiple regression analysis. Results: Mean scores of stress for college life, depression and social support were 2.56, 4.12 and 0.61, respectively. Stress for college life and depression showed a significant positive correlation (r=.60, p<.001), while depression and social support showed a significant negative correlation (r=-.46, p<.001). Lastly, stress for college life and social support showed a significant negative correlation (r=-.55, p<.001). The analysis of the mediator effect of social support in the association between stress for college life and depression showed that social support had a significant mediator effect. Conclusion: Among nursing students, social support may be a mediator in the association between stress for college life and depression. Therefore, strategies for nursing intervention to improve social support should be developed for nursing students.

• 보건의료산업학회지
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• 제13권2호
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• pp.55-66
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• 2019

Objectives: The objective of the present study was to investigate whether gender mederates the mediating effect of job burnout on the relationship between role stress and depression among medical doctors in Local clinics in South Korea. Methods: Questionnaires that assess role stress, job burnout, and depression were administered to. 265 medical doctors who worke in local clinics in Seoul, Busan, Daejeon, and Gyeonggi provinces. Data analysis was conducted using the PROCESS macro in Statistical Package for the Social Sciences(SPSS). Results: Job burnout mediated the relationship between role stress and depression. Further, gender moderated the relationship between role stress and job burnout. Finally, gender moderated the mediating effect of job burnout on the relationship between role stress and depression. Conclusions: On the basis of the emergent findings, effective coping strategies that can alleviate role stress are articulated. However, the findings also suggest that the selection of a suitable intervention must be based on the gender of the medical doctor.

• 한국학교ㆍ지역보건교육학회지
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• 제23권3호
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• pp.15-28
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• 2022

Objectives: This study aims to examine factors affecting depression of adolescents by using the data of the 17th Korean Youth Health Risk Behavior Survey(2020). Methods: The total sample was 54,848 students who are in middle or high school. In this study, sociodemographic variables, health behavior variables, and stress were input to examine the effect on depression. The data was analyzed with χ²-test and hierarchical regression by SPSS statistic program. Results: The results showed that depression was related to sociodemographic factors, health behaviors, and stress factors. In the result of hierarchical regression analysis, it was found that not only stress but also other variables had an effect on depression, which had a statistically significant effect. Conclusions: It was found that there are various causes such as environmental aspects and health behaviors that surround adolescents' depression rather than a single factor such as stress. Also, stress and depression are reciprocal rather than causal. Adolescents should be subdivided into groups such as grade, gender, or academic performance to relieve stress and depression at the same time through specific interventions.

• 한국자동차공학회논문집
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• 제6권4호
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• pp.121-128
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• 1998

In this study, when tension and bending stress act on plate simultaneously, stress intensity factor is analyzed at crack tip with using BEM(Boundary Element Method). In this analysis, stress intensity factors(S.I.F) are defined for variable ligament, aspect and stress ratio($\sigma$T/$\sigma$B). Consequently, predicted that crack grow to depth direction at low aspect and ligament ratio in tension stress and to surface direction in bending stress. Tension and bending stress act on plate same time, effect of tension stress in the first stage and effect of bending stress in the after stage was to observed. The outbreak of secondary crack in backside is under the control of stress amplitude and predict that the point of outbreak is mear backside.

• 벤처혁신연구
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• 제3권1호
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• pp.87-99
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• 2020

본 연구에서는 대학생의 전공만족도가 취업스트레스에 어떠한 영향을 미치는지 분석해보고, 장기현장실습을 경험한 학생집단과 그렇지 않은 학생 집단 간 전공만족도와 취업스트레스가 유의한 차이가 나는지를 검정하였다. 연구를 위한 모집단은 4학년 학생 중 IPP(Industry Professional Practices) 장기현장실습을 경험한 학생과 IPP를 포함한 장기현장실습을 전혀 경험하지 않는 학생으로 하였으며, 분석을 위한 샘플은 각각 100명씩 200명에게 설문조사를 통해 취득하였다. 결과분석은 IBM SPSS Statistics 24.0 통계 패키지 프로그램을 이용하였다. 실증적 연구 분석결과, 첫째, 전공만족도는 취업스트레스에 부(-)의 영향을 미치는 것으로 나타났다. 전공만족도중 교과만족은 인지적, 신체적 스트레스에 부(-)의 영향을 미쳤으며, 관계만족 역시 인지적, 신체적 스트레스에 부(-)의 영향을 미쳤다. 반면, 일반만족은 정서적 스트레스에만 부(-)의 영향을 미쳤다. 둘째, 전공만족도와 취업스트레스는 집단 간 유의한 차이가 나는 것으로 나타났다. 전공만족도는 장기현장실습경험집단이 높게 나타났으며, 취업스트레스는 반대로 낮게 나타났었다. 셋째, 실습을 한 학생 집단의 경우 교과만족이 정서적 및 신체적 스트레스에 부(-)의 영향을 미친 반면, 실습을 하지 않은 학생 집단의 경우 교과만족이 취업스트레스에 유의한 영향을 미치지 못했다. 관계만족의 경우 비실습 집단만 인지적 스트레스와 신체적 스트레스에 부(-)의 영향을 미쳤다. 일반만족의 경우 실습 집단만 정서적 스트레스에 부(-)의 영향을 미친 것으로 나타났다. 이러한 연구결과는 취업스트레스에 전공만족도가 영향을 미친다는 선행이론을 지지하였고, 두 집단간 차이가 있음을 확인했다는 점에 연구 의의가 있었다. 이를 바탕으로 학술적인 시사점과 실무적 시사점을 제시하였다.

• Environmental Analysis Health and Toxicology
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• 제14권3호
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• pp.127-133
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• 1999

To elucidate the preventive effect of oriental medicine Gungchi -hwadamsun (GH) on stress, we investigated the physiological change of rats which were applied immobilization stress. For immobilization stress, rats were placed in restrainer for 12 hours a day for 3 days. During application of stress, body weight of rats was measured. After sacrifice, 8 organs were taken for measurement of organ weight. Brain was sectioned into 4 parts that are Frontal Cortex, Corpus Striatum, Hypothalamus and Hippocampus. Each part was homogenated and its catecholamine and serotonin contents were measured with HPLC. In our study, stress mainly induced increase of concentration of neurotransmitters in brain, but had mild effect on other physical function of rats. GH inhibited stress induced changes of neurotransmitter content in brain.

• 한국세라믹학회지
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• 제28권9호
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• pp.712-720
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• 1991

The effect of cyclic compressive stress on fracture responses of Al2O3 was investigated under uniaxial stress cycling. Experimental data were obtained for Al2O3 tension specimens under uniaxial tension-unloading and tension-compression cyclic loading conditions. To investigate the effect of compressive stress on the crack growth, theoretical results from the crack growth rate were compared with measured stress vs. failure relations. At low stress level in tension-compression cycling, residual tensile strains were also observed about failure time.