• Korean Journal of Occupational Health Nursing
• /
• v.18 no.2
• /
• pp.232-241
• /
• 2009

Purpose: This study was conducted to estimate the job stress and depression of female and male service workers and to determine the predictors influencing depression. Method: In this cross-sectional study, the data were collected from hotel, wholesale, and insurance companies. A total of 244 workers were recruited. Among them, 118 were female workers. A self-administered questionnaire was consisted of personal characteristics, job stress, daily life stress, social support, and depression. Depression was measured using a CES-D Korean version. Result: The average job stress of female workers was higher than that of male workers (P<.05). The average depression scores of female workers were higher than those of male workers, but the difference was not statistically significant. Multiple regression analysis showed that role conflict and low social support were significant predictors of depression in female workers. In male workers, role conflict, low social support, and under-utilization of abilities were significant predictors of depression. Conclusion: The results of this study suggest that depression of service workers may be prevented by creating a workplace environment that focuses on role conflict and social support. Also, health providers should consider the vulnerability of working women to job stress.

• The Korean Journal of Emergency Medical Services
• /
• v.23 no.3
• /
• pp.83-96
• /
• 2019

Purpose: This study was conducted to provide fundamental resource in improving the quality of life and stress by understanding the influence of egoresilience and social support by paramedic students during field practice. Methods: The measurement instrument consisted of 100 questions on the general characteristics, egoresilience, social support, stress, and quality of life of the participants. Frequency and descriptive analysis, t-test, ANOVA, correlation analysis, and multiple regression analysis were performed. Results: The average scores for egoresilience, social support, and stress were 3.00, 3.14, and 1.68 out of 4.00, respectively. The degree of stress was high enough to be statistically significant in the case of women compared to men, and if unsatisfied with one's major. The average quality of life score was 4.50. The degree of quality of life was high enough to be statistically significant in the case of men compared to women, smokers, drinkers, and if content with one's major. Conclusion: It is suggested that colleges develop programs to increase the satisfaction rate of the students and improve their egoresilience and social support. Such programs would improve the quality of life and address the stress experienced by emergency medical technology students.

• Korean Journal of Child Studies
• /
• v.37 no.4
• /
• pp.145-158
• /
• 2016

Objective: This study investigated the moderating effect of emotional dysregulation on the relationship between teacher efficacy and job stress among teachers in the Early Childhood Education and Care (ECEC). Methods: The participants included 586 ECEC teachers from 99 centers in Seoul, Gyeonggi-do, Daejeon, Chungcheong-do, Jeolla-do, and Gyeongsang-do. The data were analyzed through frequencies, percentages, and Pearson's correlations using SPSS 21.0 (IBM Co., Armonk, NY). To analyze the moderating effect, Ping's (1996) two-step approach was used via AMOS 20.0 (IBM Co., Armonk, NY). Results: The main findings are as follows. First, the mean scores of ECEC teacher efficacy and job stress showed above the average, and the mean score of emotional dysregulation was the nearly average. Second, fit statistics indicated that the proposed model, as revised, provided an acceptable fit to the sample data. This proposed model showed that the emotional dysregulation of teachers in ECEC had a moderating effect on the relationship between teacher efficacy and job stress. Conclusion: These findings imply that the ECEC teachers showed the higher level of self-trust and self-confidence than average regarding their own work, and suffered from the work overload. Also, the positive and supportive working environment would help the ECEC teachers to reduce their emotional dysregulation. In addition, there was a moderating effect of the ECEC teachers' emotional dysregulation on the relationship between teacher efficacy and job stress. These findings imply that the workshop or counselling programs need to be provided to teachers in order to help control their emotion dysregulation and reduce their job stress.

• Journal of Ocean Engineering and Technology
• /
• v.25 no.3
• /
• pp.53-65
• /
• 2011

This is the third of several companion papers dealing with the derivation of material constants for ductile failure criteria under hydrostatic stress. It was observed that the ultimate engineering stresses and elongations at fracture from tensile tests for round specimens with various notch radii tended to increase and decrease, respectively, because of the stress triaxiality. The engineering stress curves from tests are compared with numerical simulation results, and it is proved that the curves from the two approaches very closely coincide. Failure strains are obtained from the equivalent plastic strain histories from numerical simulations at the time when the experimental engineering stress drops suddenly. After introducing the new concept of average stress triaxiality and accumulated average strain energy, the material constants of the Johnson-Cook failure criterion for critical energies of 100%, 50%, and 15% are presented. The experimental results obtained for EH-36 steel were in relatively good agreement with the 100% critical energy, whereas the literature states that aluminum fits with a 15% critical energy. Therefore, it is expected that a unified failure criterion for critical energy, which is available for most kinds of ductile materials, can be provided according to the used materials.

• Korean Journal of Human Ecology
• /
• v.21 no.6
• /
• pp.1199-1210
• /
• 2012

This study investigated the influence of obesity on depression and stress by analyzing the results of the national survey on health and nutrition. Relationships between normal, obese, and severely obese groups were investigated. The results of the study are as follows. First, obesity caused by demographic variables showed a relationship to both gender and average monthly income. In the case of the seriously obese group, females had higher rates of depression than males, and the high obesity group had lower average monthly income than the normal and obese groups. Second, obesity caused by health-related variables found that high blood pressure, hyperlipidemia, and diabetes that was not angina-related displayed higher rates of depression in the serious obesity group than in the other groups. As for subjective evaluations of one's own health condition, the serious obesity group showed a high tendency to evaluate their own health conditions negatively. Third, the difference between depression and stress related to obesity level showed no difference between the normal weight group and the obesity group; however, the seriously obese group demonstrated relatively higher occurrences of depression and higher stress scores. Fourth, the result for depression and stress level caused by demographic variables, health-related variables, and obesity demonstrated a direct relationship to gender, subjective level of satisfaction with one's personal finances, average monthly income, subjective perception of one's own health and severely obesity status. More specifically, it was found that the ratio of depression and stress score was higher when the subject was female, among those whose subjective evaluation of their own finances and health condition was negative, and those who suffered from severe obesity.

• The Korean Journal of Health Service Management
• /
• v.5 no.2
• /
• pp.35-51
• /
• 2011

The purpose of this study is to examine relations between the job stress of radiologists, who are serving at secondary medical institutions, and their intent of separation, providing basic information necessary to earlier prevent the separation, improve the quality of radiologists and ensure a more effective personnel management of the professionals. For the purpose, this researcher conducted a structured questionnaire survey of 221 radiologists from Nov 1 to 30, 2010 who were serving at secondary medical institutions located in Busan. Findings of the study can be summarized as follows. 1) The surveyed radiologists were scored 2.82 points in average in terms of job stress. This indicates that they are suffering from job stress higher than moderate. 2) The subjects were significantly different from each other in job stress according to their age, total service period, department where they were serving, satisfaction with their hospital and satisfaction with the foresaid department. 3) The subjects were scored 2.59 points in average in terms of the intent of separation. This indicates that the surveyed radiologists are not so willing to change their job. 4) Those radiologists were significantly different from each other in the intent of separation according to their age, marital status, educational background, average monthly income, total service period, the period of service at a department where they belonged now, position, satisfaction with their hospital and satisfaction with the foresaid department. 5) There were significant correlations between the subjects' job stress and intent of separation.

• Journal of Convergence for Information Technology
• /
• v.9 no.9
• /
• pp.258-268
• /
• 2019

The purpose of this study was to investigate the effects of stress factors on fatigue and depression of aesthetician. The subjects of this study were 133 Aesthetician in Busan Metropolitan City. Analysis was done by frequency analysis, t-test, one-way ANOVA and regression analysis. The results of this study are as follows. First, the aesthetician showed an average 2.57 of job stress. Second, the aesthetician showed an average 2.45 of socio-psychological stress. Third, the aesthetician showed an average fatigue(4.16) and depression(1.54). Therefore, in order to reduce the duties and socio-psychological stress of the aesthetician, fatigue and depression are reduced through regularization of the employees, adjustment of legal working hours, and establishment of similar paying system. Finally, it is necessary to lower the turnover rate of the aesthetician and increase the job satisfaction.

• The Journal of the Convergence on Culture Technology
• /
• v.7 no.4
• /
• pp.163-170
• /
• 2021

The purpose of this study is to identify the harmful factors of teacher's job stress and occupational-related musculoskeletal diseases, and to investigate according to job types to seek solutions and improvement measures for removing harmful factors. A total of 168 elementary and high school teachers in Seoul were surveyed. As a result, the average RULA score of the teacher was 4.2 points, and the average RULA score of the teacher who did not complain of musculoskeletal diseases was 4.3 points. In addition, the average job stress score of the teacher was 58.9 points, and the stress score by factor was in the order of student guidance, work burden, loss of authority, organizational structure and curriculum, treatment and welfare, human relations. As a result of analyzing the teacher's RULA score and job stress, it was possible to derive a correlation between musculoskeletal disorders and job stress caused by occupation.

• Korean journal of food and cookery science
• /
• v.30 no.5
• /
• pp.650-662
• /
• 2014

This study was conducted to identify middle school students' caffeine intake from their favorite foods containing caffeine as well as several factors related to their intake. The objects of the investigation were 369 middle school students in the urban area of Changwon-si and 358 middle school students in the rural area of Haman-gun. The average height was 162.3cm, average weight was 52.3 kg and average BMI was 19.8. The food habit score was generally positive at an average of 3.37. The food habit scores of rural area students were higher than those of urban area students (p<.05). The average stress score was somewhat low at 2.82. The stress index for rural students was lower than that of urban students (p<.01). The recognition of caffeine in favorite foods was 8.12 out of a 12 point scale. The average nutritional knowledge score regarding caffeine was very low at 3.08 out of a 10 point scale. The main reason for selecting favorite foods was 'taste'. The percentage of students who don't check food labels was 49.1%. 'House' was the main location while 'good taste' was the biggest reason for eating caffeine-containing foods. The main side effect of caffeine intake was 'nausea'. The average daily caffeine intake for all subjects was 26.96 mg, with the urban students averaging 27.90 mg and the rural students averaging 25.99 mg. The correlations between several factors and caffeine intake were examined. Food habit showed a negative correlation with stress score and caffeine intake. Nutritional knowledge and recognition of caffeine had positive correlations with caffeine intake. Hence nutritional education about caffeine should be emphasized to improve students' healthy food habits.

• Transactions of the Korean Society of Automotive Engineers
• /
• v.20 no.4
• /
• pp.133-141
• /
• 2012

This study investigates structural and fatigue analyses of bike brake. Maximum equivalent stress of the model of mountain bike is 4 times as much as the model of general bike at static analysis. In cases of mountain and general bikes, maximum damage frequency at load of 'SAE bracket history' with the severest change of load becomes as much as 16 times than the most stable load of 'Sample history' among the nonuniform fatigue loads. In case of mountain bike, the possibility of maximum damage becomes 3% at the load of 'Sample history' with the average stress of 0 to $-3{\times}10^4$MPa and the amplitude stress of 0 to $10^4$MPa. In case of general bike, the possibility of maximum damage becomes 3% at the load of 'Sample history' with the average stress of 0 to $-0.8{\times}10^4$MPa and the amplitude stress of 0 to $0.2{\times}10^4$MPa. This stress state can be shown as 5 to 6 times more than the damage possibility of 'SAE bracket history' or 'SAE transmission'. The analysis result of this study can be effectively utilized for the safe design of bike brake.