• Transactions of the Korean Society of Mechanical Engineers
• /
• v.12 no.2
• /
• pp.252-261
• /
• 1988

Through the careful interpretation of the results of the cutting tests carried out in this study, it is found that under the cutting conditions when the internal shear of the chips take place the cutting can be treated essentially as a steady state problem. A new shear angle equation has been developed employing the conditions of force and moment equilibrium about the tool edge and the stress distribution model suggested by Zorev.The equation contains the chip-tool contact length C and stress distribution index n as important parameters.

• Korean Journal of Occupational Health Nursing
• /
• v.33 no.3
• /
• pp.95-108
• /
• 2024

Purpose: This study aimed to develop a tool to measure the job stress of nursing managers in small and medium-sized hospitals and to evaluate its reliability and validity. Methods: DeVellis' eight steps scale development process was applied. The initial questions were developed through a literature review and in-depth interviews, and content validity was evaluated by 13 experts. Data were collected from 193 nursing managers at small and medium-sized hospitals in Korea, 193 through exploratory factor analysis (EFA), and 192 through confirmatory factor analysis (CFA). Results: The scale consisted of 27 final items and seven factors, with a total variance of 66.76%. The CFA results were x² =642.56, p<.001, GFI=.80, CFI=.92, and Cronbach's ⍺ for the overall scale was .82. Conclusion: The scale showed satisfactory validity and reliability, confirming its potential to become an appropriate tool for measuring the job stress of nursing managers in small and medium-sized hospitals.

• Safety and Health at Work
• /
• v.7 no.1
• /
• pp.43-48
• /
• 2016

Background: Work Ability Index (WAI) is a well-known and valid self-report tool that has been widely used in various studies to identify and avoid early retirement and work-related disability. Nevertheless, very few studies have been carried out to evaluate work ability in Iran. We aimed to investigate the WAI and the effect of work-related stress on it among Iranian workers. Methods: A cross-sectional, descriptive and analytic study was carried out among 449 workers from five working sectors in three big cities of Iran. Work ability and work-related stress were measured using the Persian version of WAI and the Persian version of Health and Safety Executive Stress Indicator Tool. Results: More than a third of the workers surveyed (34.70%) did not have an appropriate level of work ability (WAI < 37). There was a significant correlation between subscales of work-related stress and the mean score of WAI. Furthermore, the variables of body mass index, sleep quality, exercise activity, job tenure, and three subscales of work-related stress including demands, supervisor support, and role were significant predictors of WAI. Conclusion: According to the results of this study, the interventional programs must be focused on improving supervisors support, eliminating ambiguity and conflicts in the role of workers in their job and organization, reducing job demands, improving sleep quality, and increasing exercise activity.

• The Journal of Korean Obstetrics and Gynecology
• /
• v.37 no.3
• /
• pp.63-84
• /
• 2024

Objectives: This study aims to understand the stress patterns and coping behaviors of women with infertility and to improve existing infertility stress assessment tools to develop a tool suited for Korean society. Methods: The study involved 10 women diagnosed with primary or secondary infertility. Data were collected through surveys and in-depth interviews. Participants were recruited voluntarily, and snowball sampling was used for additional recruitment. Data collection occurred from September 2023 to April 2024. Data analysis included Spearman's rank correlation, Mann-Whitney U test, and Kruskal-Wallis test. Interview results were analyzed using text mining and network analysis with Python 3.12. Results: There was a significant correlation between IVF/ICSI treatment and resilience scores, with non-IVF/ICSI groups showing higher resilience scores. Existing infertility stress assessment tools were generally useful but had limitations, such as discomfort with religious expressions and fixed gender roles, as well as issues with the number of items and response scales. Text mining of interview responses revealed key stress-related keywords including worry, depression, burden, pregnancy outcome, and health. Main stressors included uncertainty about pregnancy outcomes, physical discomfort during treatments, economic burdens, and emotional reactions from family and social relationships. Conclusions: This study identified the stress patterns of women with infertility through interviews. It showed the need for a new assessment tool to evaluate and support the complex stressors experienced by these women. Developing a comprehensive tool is essential for better understanding and managing the various stress factors faced by infertile women.

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 2009.10a
• /
• pp.557-558
• /
• 2009

• Korean Journal of Occupational Health Nursing
• /
• v.22 no.1
• /
• pp.13-23
• /
• 2013

Purpose: This study was done to describe the research trend of nurses' job stress in Korea and abroad. Methods: A narrative literature review of nurses'job stress related literature published from 1990 to Sept. 2011 was done. A total of 691 original articles were reviewed by two independent reviewers using analysis guidelines. Finally, 261 articles (Korean 177, international 84) were selected using exclusion criteria developed by the researchers. Results: In Korea, most of the researches were in correlational survey design, using questionnaires and the tool of Kim and Gu (1984) to measure job stress. International researches were more diversified than Korean's in the research design, measurement tool, and data collection method. Especially, most of international researches focused on job related factor (number of patients, working time, etc.) and physical effects (tension, heart rate, etc.) of job stress. Conclusion: The results of the study may provide with information that can improve researches on nurses' job stress in Korea.

• Journal of Korean Clinical Nursing Research
• /
• v.25 no.3
• /
• pp.323-332
• /
• 2019

Purpose: This study aimed to identify the factors affecting the terminal care stress of nurses in intensive care units in terms of their death perception, attitude toward terminal care, and mental health. Methods: This descriptive study collected data from 118 nurses in intensive care units in one tertiary referral hospital and three general hospitals. The instruments used in the study were the Terminal Care Stress Assessment Tool, the View of Life and Death Scale, the Frommelt Attitudes toward Nursing Care of the Dying Scale (FATCOD), and the Mental Health Assessment Tool. The data were analyzed by t-test, ANOVA, Pearson's correlation coefficient, and multiple regression. Results: There was a significant positive correlation between terminal care stress and death perception (r=.31, p<.001). The factors significantly influencing the terminal care stress of the participants included gender (β=.33, p<.001), religion (β=.24, p=.004), and death perception (β=.35, p<.001), and the overall explanatory power was 23.1% (F=12.73, p<.001). Conclusion: To decrease terminal care stress among nurses, establishing the death perception of nurses based on value clarification about death may be necessary. Furthermore, this study suggests an intervention study examining the effect of an education program on terminal care stress among ICU nurses.

• Physical Therapy Rehabilitation Science
• /
• v.10 no.2
• /
• pp.197-204
• /
• 2021

Objective: This study is based on a parallax design before and after a non-equivalent control group to examine the effects of laughter therapy on the anxiety, depression, and stress in patients with cancer admitted to a nursing hospital. Design: A randomized controlled trial. Methods: Data collection was conducted on 34 patients who agreed to participate in the study among patients admitted to E Cancer Hospital from September to November 2018. Laughter treatment interventions were performed three times a week for 50 minutes each and a total of eight times. In this study, a tool developed by Spielberger was used to measure state anxiety, a tool developed by Beck was used to measure depression, and the Perceived Stress Scaled eveloped by Cohen was used to measure stress. Results: Anxiety was significantly lower in the experimental group than in the control group (F=10.74, p=0.003). Depression was lower in both the experimental group and the control group that did not participate in the laughter therapy intervention and was not significant (F=0.58, p=0.451). Stress was significantly lower in the experimental group than in the control group (F=4.36, p=0.045). Conclusions: The results of this study suggest that laughter therapy has a positive effect on reducing anxiety and stress in patients with cancer admitted to nursing hospitals.

• Proceedings of the Korean Society of Machine Tool Engineers Conference
• /
• 2000.04a
• /
• pp.326-331
• /
• 2000

In this study, residual stress was investigated experimentally to evaluate damaged layer in high-sped machining. In machining difficult-to-cut material, residual stress remaining in machined surface was mainly speared as compressive stress. The scale of this damaged layer depends upon cutting speed, feed per tooth and radial cutting depth. Damaged layer was measured by optical microscope. The micro-structure of damaged layer was a mixed maternsite and austenite. depth of damaged layer is increased with increasing of cutting temperature, cutting force and radial depth. On the other hand, that is slightly decreased with decreasing of cutting force. The increase of tool wear causes a shift of the maximum residual stress in machined surface layer.

• Journal of the Korean Society of School Health
• /
• v.34 no.2
• /
• pp.115-122
• /
• 2021

Purpose: The purpose of this descriptive research is to identify how stress from Covid-19, health beliefs, and social support of college students affect health prevention. Methods: The subjects of the study were 128 university students, excluding health major students, at one university in D City. The survey was conducted from August 1 to 31, 2020. The survey questionnaire consists of 8 items on stress from COVID-19, 12 items adapted from a health belief measurement tool, 12 items from a social support measurement tool, and 11 items adapted from a tool that measures health preventive behaviors. The collected data were analyzed using the hierarchical multiple regression analysis method with SPSS 26.0. Results: In model 1, stress from COVID-19 was statistically significant (β=-.403, p=.003). Model 2 added four health belief factors into Model 1. Stress (β=-.419, p<.001), perceived severity (β=-.193, p=.030), and perceived barriers (β=-.182, p=.009) were statistically significant. In model 3, stress (β=-.413, p<.001), perceived barriers (β=-.147, p=.034), and social support (β=.194, p=.011) were statistically significant. The regression equation was significant (F=15.395, p=<.001) and the model's explanatory power was 53.1%. Conclusion: The results show that when college students had a high degree of health beliefs about COVID-19, the degree of health preventive behaviors was proportionally high. To make them practice preventive health behaviors, it is necessary to develop infection control education programs to improve health beliefs.