• Journal of the Korean Dietetic Association
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• v.28 no.2
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• pp.143-159
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• 2022

This study was undertaken to assess levels of job stress, self-efficacy, job satisfaction, and job involvement as perceived by school dietitians/nutrition teachers during the early stage of the COVID-19 pandemic and to determine the effects of these three factors. An online survey was sent from May 18 to May 26, 2021, to school dietitians/nutrition teachers in Seoul with experience of foodservice operations during 2020; 250 responses were used for this analysis. Job demands contributed most to job stress, whereas human relations contributed most to job satisfaction. Job stress caused by COVID-19 had a negative impact on self-efficacy (P<0.01) and job satisfaction (P<0.01), but a positive impact on job involvement (P<0.05). Self-efficacy positively impacted job involvement (P<0.01) but did not significantly influence job satisfaction. However, job satisfaction during early COVID-19 positively impacted job involvement (P<0.05). In conclusion, job stress associated with job requirements was greater during the early stage of the COVID-19 pandemic than before the pandemic guidelines are needed that enable school dietitians/nutrition teachers to better cope with the job pressures generated by infectious diseases.

• Proceedings of the Korea Concrete Institute Conference
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• 2002.10a
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• pp.795-798
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• 2002

Recently. the properties of early-age concrete are increasingly important because these properties directly influence the behavior of early-age concrete structures including stress and cracking behavior. Nevertheless, the studies on early-age concrete are limited to strength and temperature development. The purpose of present study is to propose a simple and rational method which can predict the stress and strain behavior of young age concrete. A series of test have been done to measure the temperature development, strains and stresses in concrete members. The concept of equivalent age was used to define the degree of hydration and this degree of hydration was used to calculate the strength and elastic modulus. The present study indicates that the calculated stresses correlate fairly well with measured stresses. The consideration of critical degree of hydration in calculating stresses gives more accurate results. The present study provides useful method and data in evaluating early-age behavior of concrete structure.

• Proceedings of the Korea Concrete Institute Conference
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• 2002.10a
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• pp.391-396
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• 2002

The so called setting is defined as the onset of rigidity in fresh concrete. In the analysis of the early-age concrete behavior, we consider fresh concrete as a structural element immediately after mixing. But for the activation of real structural behavior of fresh concrete, it takes some time after the beginning of hydration reaction. So, the very early age deformations due to hydration heat and shrinkage which occur before the setting do not produce restraint stresses. In this paper, we propose a setting characteristic model based on the so called percolation theory. From the analysis using the model, the influence of curing temperature is investigated and analytical results are compared with experimental results. From the comparison, the validity of proposed model is verified. This model is also applied to evaluate stress development in a temperature-stress test machine (TSTM) specimen and then the effect of setting time on the stress development is discussed.

• Proceedings of the KIEE Conference
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• 1999.07b
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• pp.871-873
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• 1999

According to the reports about the failure mode analysis of modules and systems, It is said that there are many early failure of system. To remove latent defects which causes early failures like that, It is necessary that screening test is performed. ESS is often used fur screening electronic equipments, and is proposed by the most powerful tool for removing latent defects of electronic equipments. [1][2] In this report, the procedure of the environmental stress screening which uses the temperature cycling stress is proposed. It is considered about environmental conditions of distributed control system(DCS) to be tested, design specifications of the system, recommended conditions of relative IEC-STD and applied conditions of similar company. ESS test was applied at the DCS to be installed in power plant. As the results of analyzing discovered problems. It was found that almost latent defects of electronic control systems was discovered early.

• Korean Journal of Human Ecology
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• v.21 no.6
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• pp.1017-1028
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• 2012

The purpose of this study was to evaluate the relationship between fetus-related pregnancy stress and temperament, parenting attitude, parent-fetal attachment, and marital quality. Respondents were 285 pregnant women and their spouses who participated in Pregnant Education Programs. Data was collected by means of questionnaire. The results are summarized as follows: The total fetus-related pregnancy stress level of pregnant couples demonstrated a higher relationship while parent-fetal attachment level demonstrated a very significant relationship. There were significant differences between spouses with regard to fetus-related pregnancy stress, parenting attitude, parent-fetal attachment, and marital quality.

• Korean Journal of Childcare and Education
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• v.10 no.2
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• pp.5-19
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• 2014

The purpose of this study was to examine the effects of pre-service early childhood teachers' self-expression and stress coping style on their human nature. More specifically, this study attempted to investigate how teachers' human nature, self-expression and stress coping style are correlated with another and determine how much human nature is influenced by the other variables, ultimately providing basic information necessary for improving the humanity of pre-service preschool teachers. Findings of the study can be summarized as follows. First, correlations among pre-service early childhood teachers' self-expression, stress coping style and human nature were investigated to find that those teachers' human nature and self-expression have close relationships with each other and that the two variables are significantly related with their stress coping style. Second, the influences of pre-service preschool teachers' self-expression and stress coping style on their human nature were analyzed to find that the human nature of those teachers as a whole and some sub-areas of the variables like positive self-concept and human creativity have significant relationships with their self-expression and stress coping style. Finally, based on these findings, this study discussed how to establish and manage a curriculum that helps to improve the human nature of pre-service early childhood teachers of junior colleges. It also hopes to find effective ways to manage the department of education.

• Korean Journal of Biological Psychiatry
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• v.2 no.2
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• pp.193-204
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• 1995

Traumatic brain injury(TBI) used to be developed after a severe traumatic event. Therefore TBI usually induces acute or chronic stress reaction. I reviewed the concept, epidemiology, biological or psychosocial etiology, diagnosis and treatment of post-traumatic stress disorder (PTSD), and discussed about PTSD or stress reaction after TBI. Early evaluation and management of stress reaction after TBI are important.

• Women's Health Nursing
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• v.6 no.4
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• pp.493-505
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• 2000

The purpose of this study was to contribute to maternal nursing in the early postpartum stage and neonate nursing. Data were collected through self-report questionaires which were constructed to include perception of the newborn scale, parental role stress scale and anxiety scale. The subjects consisted of 81 mothers of preterm babies at seven hospitals in Seoul and Kyoungki-Do, from July 15 to September 30, 2000. Data were analysed by SPSS/PC using frequency, percentage, mean, standard deviation, ANOVA, t-test and Pearson correlation coefficient. The results were summarized as follows ; 1. The mean of perception of the newborn in the early postpartum stage was 1.35. The mean of parental role stress was 10.78. The mean of anxiety of mother was 39.74. 2. There were significant positive correlation between parental role stress and anxiety of mothers. 3. There were not significant influencing general characteristics to perception of the newborn and parental role stress. General characteristics related to the level of anxiety were economic status, expectation of pregnancy, birthing order, newborn weight. The above findings indicated that the level of parental role stress and anxiety of preterm birth mothers were correlated. Therefore nursing intervention for reducing parental role stress and anxiety should be provided for preterm birth mothers.

• Korean Journal of Child Studies
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• v.31 no.4
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• pp.159-177
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• 2010

This study sought to identify the solutions that private-kindergarten directors use in dealing with their work-related stress. The respondents for this study were 200 kindergarten directors in Busan, Ulsan and Gyoung-Nam province. Surveys were issued and 162 were returned and were subject to statistical analysis. The survey consisted of a total of 45 questions about work-related stress and the strategies used to cope with their work situations. The data collected data were analyzed through the SPSS 12.0 program. As a result of this study, it can be argued that, firstly, in terms of the strategies to reduce work-related stress by directors, it is best to address these issues psychologically, directly and physically. Secondly, through this process, significant differences stemming from the age of directors (p < .01) were observed, while there were no significant differences in terms of educational level and management experience in these statistics. Finally, our results indicated that as a result of confirming the differences among effective plans according to total marks of the level of job stress recognition for privatekindergarten directors, there are meaningful and significant differences in the level of job stress recognition in respect to a physical effective plan (p < .05), a negative plan (p < .01) and a direct effective plan (p < .05).

• Women's Health Nursing
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• v.13 no.4
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• pp.299-309
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• 2007

Purpose: The purpose of this study was to compare the predictors between the early and late postpartum period in parturient women. Methods: The Subjects were 399 healthy postpartum women who visited the obstetric clinic at 5 hospitals for a routine check up after childbirth. They were divided into two groups: one was in the early postpartum period, the first three weeks after childbirth (n=107), the other was in the late postpartum period, four to six weeks after childbirth (n=292). The data were collected by using a self-report questionnaire from July to September, 2006. The data were analyzed with the SPSS 12.0 Win program. Results: There were significant statistical differences in age and parity between the two groups. Postpartum fatigue was significantly predicted by postpartum depression and age in the early period, and postpartum depression, sleep satisfaction, and childcare stress in the late period. The mean scores of childcare stress and perceived infant difficulty in the late period were significantly higher than those of the early postpartum period. Conclusion: Postpartum depression was the most important predictor of postpartum fatigue regardless of the postpartum period. In addition, especially in the late period, sleep satisfaction and childcare stress were significant predictors of postpartum fatigue. Based on these results, primary nursing interventions for reducing postpartum fatigue should focus on postpartum depression management, and nursing interventions for increasing sleep satisfaction and decreasing childcare stress would be helpful for management of postpartum fatigue in parturient women in the late period.