• 한국환경보건학회지
• /
• 제36권5호
• /
• pp.373-382
• /
• 2010

A number of recent studies have shown that occupational stress is closely associated with increased fatigue and decreased job satisfaction. This study was designed to assess stress in workers in the field of EIA (environment impact assessment) from July 2009 through september 2009, and questionnaires were uesd to analyze the stress scores and identify the primary factors influencing stress in this occupation. The number of respondents was 272 working in the Capital (Seoul and Kyunggido), Chungcheongdo, Jejudo area. A structured questionnaire was used to evaluate the participants' socio-demographics, job-related factors, health-related behaviors, occupational stress, reaction factor (self-perceived fatigue, job satisfaction) and buffer factor (social support). Occupational stress and self-perceived fatigue were assessed using the Korean Occupational Stress Scale-Short Form (KOSS-SF) and the Multidimensional Fatigue Scale (MFS), respectively. The analysis revealed a strong correlation between occupational stress, job satisfaction, and social support, with occupational stress being associated with an increased risk of fatigue and decreased job satisfaction. In the multiple regression analysis(stepwise), the main factors influencing occupational stress were found to be job satisfaction, supervisor, fatigue, working time, no. of personnel, career. The results of this study suggest that occupational stress is a determinant predictor of self perceived fatigue and job satisfaction. Thus, a strong recommendation is made for a stress management program for reduction of occupational stress, and for the development of relevant experts on the health and quality of life of environment impact assessment workers.

• 한국산학기술학회논문지
• /
• 제17권8호
• /
• pp.569-581
• /
• 2016

본 연구는 종합병원에 근무하고 있는 간호사의 사회심리적 요인(A형 행동유형, 자기존중감, 통제신념, 불안), 직무스트레스 및 피로와 간호서비스의 질과의 관련성을 규명하고자 시도하였다. 연구대상은 대전광역시의 6개 종합병원에서 근무하고 있는 간호사 503명을 대상으로 하였다. 자료 수집은 2014년 4월 1일부터 6월 30일까지의 기간 동안에 자기기입식 설문조사에 의하였다. 다변량 로지스틱회귀분석 결과, 자기존중감, 업무의 자율성, 상사 및 동료의 지지도가 높은 군이 낮은 군에 비해 간호서비스의 질이 낮은 군에 속할 위험비가 유의하게 감소한 반면, 전반적 피로 및 상황적 피로가 높은 군이 낮은 군에 비해 간호서비스의 질이 낮은 군에 속할 위험비가 유의하게 증가하였다. 위계적 다중회귀분석 결과, 연령이 높을수록, 주관적인 건강상태가 좋을수록, 직업에 대한 적성이 맞는다는 군, 자기존중감이 높을수록, 불안감이 낮을수록, 동료의 지지도가 높을수록, 전반적 피로가 낮을수록 간호서비스의 질이 유의하게 높았다. 이상과 같은 연구결과는 종합병원 간호사들의 간호서비스의 질은 사회심리적 요인, 직무스트레스 및 피로와 유의한 관련성이 있음을 시사하고 있다.

• Annals of Occupational and Environmental Medicine
• /
• 제35권
• /
• pp.9.1-9.10
• /
• 2023

Background: Studies conducted so far on the link between commute time and mental health among Koreans remain insufficient. In this study, we attempted to identify the relationship between commute time and subjective mental health using the 6^th Korean Working Conditions Survey (KWCS). Methods: Self-reported commute time was divided into four groups: ≤ 30 (group 1), 30-60 (group 2), 60-120 (group 3), and > 120 minutes (group 4). Subjective depression was defined as a score of 50 points or less on the WHO-5 well-being index. Subjective anxiety and fatigue were defined as answering 'yes' to the questionnaire on whether they had experienced it over the past year. The analysis of variance, t-test, and χ² test was used to analyze the differences among the characteristics of the study participants according to commute time, depression, anxiety, and fatigue. Odds ratios (ORs) and 95% confidence intervals (CIs) for depression, anxiety, and fatigue according to commute time were calculated using multivariate logistic regression models adjusted for sex, age, monthly income, occupation, company size, weekly working hours, and shift work status. Results: Long commute times showed increased ORs and graded increasing trends for depression, anxiety, and fatigue. The ORs for depression increased significantly in group 2 (1.06 [1.01-1.11]), group 3 (1.23 [1.13-1.33]), and group 4 (1.31 [1.09-1.57]) compared to group 1 (reference). The ORs for anxiety increased significantly in group 2 (1.17 [1.06-1.29]), group 3 (1.43 [1.23-1.65]) and group 4 (1.89 [1.42-2.53]). The ORs for fatigue increased significantly in group 2 (1.09 [1.04-1.15]), group 3 (1.32 [1.21-1.43]), and group 4 (1.51 [1.25-1.82]). Conclusions: This study highlights that the risk of depression, anxiety, and fatigue increases with commute time.

• 한국항공운항학회지
• /
• 제25권1호
• /
• pp.23-34
• /
• 2017

Approximately 70% of aviation accidents in the world are caused by human factors of pilots and 15-20% of these accidents are known to be caused by pilot fatigue. Recently ICAO established new standards of FRMS for aircrew. The US and the EU have introduced FRMS and established and operated new aviation regulation systems for pilot flight(duty) time limitations. On the other hand, Korea has not yet introduced FRMS. This study reviewed ICAO's standards of FRMS and analyzed the aviation regulations of the US and the EU. As a result of this study, it showed that Korea also needed to introduce FRMS. This study reasoned out plans to improve Korean aviation regulations about pilot flight time limitations based on international standards.

• Nuclear Engineering and Technology
• /
• 제50권5호
• /
• pp.758-766
• /
• 2018

We developed numerical models to efficiently simulate the low-cycle fatigue behavior of a pipe elbow. To verify the model, in-plane cyclic bending tests of pipe elbow specimens were conducted, and a through crack occurred in the vicinity of the crown. Numerical models based on the erosion method and tie-break method are developed, and the numerical results are compared with experimental results. The calculated results of both models are in good agreement with experimental results, and the model using the tie-break method possesses two times faster calculation speed. Therefore, the numerical model based on the tie-break method would be beneficial to evaluate the strength of piping systems under seismic loadings.

• 한국직업건강간호학회지
• /
• 제7권2호
• /
• pp.177-185
• /
• 1998

The purposes of this study were to investigate the effects of farming in greenhouses with respect to subjective fatigue symptoms among farmers and the degree of symptoms. The study compared 176 green-house farmers with 216 open field farmers using a subjective fatigue symptoms rating scale developed by the Industrial Research Institute of Fatigue, Japanese Association for industrial Hygiene. 1. With respect to complaint rates of the subjective fatigue symptoms, the results indicated that greenhouse farmers have, in order of severity, high degrees of low back pain, difficulty in collecting thoughts, and apt to forget. 2. With respect to cumulative scores of fatigue symptoms, the results indicated that both groups of farmers exhibited a lack of attentiveness and a high degree of dullness and sleepiness(category I), body projection of fatigue(category II), and difficulty in concentration(category III). 3. With respect to general characteristics, it was found that the degrees of subjective fatigue symptoms were found to be higher among females, people with lower educational levels, and the elderly, regardless of the group. 4. With respect to work related factors, farmers with more years of experiences were found to have higher degrees of subjective fatigue symptoms, except for open field farmers with less than nine years experience. Both groups of farmers were found to have high degrees of subjective fatigue symptoms when working less than eight hours a day and less than six months a year. 5. With respect to health habits, for people who get less than eight hours of sleep per day exhibited higher fatigue scores than people who get more than eight hours. People who do not smoke and drink also exhibited higher fatigue scores than people who smoke and drink. 6. The results of multiple regression showed that the risk factors related to the subjective fatigue symptoms of farmers in the greenhouse group were ages, levels of education, sex and for the comparison group, were sex. years of farming, and hours of sleep. The R-square were 12.5% in the greenhouse group and 12.1% in the comparison son group. The differences between the greenhouse and open field farmers in the degrees of fatigue symptoms were found not to be statistically significant even if the working conditions of the greenhouse farmers were poor. This may be attributed to non-work related factors, i.e., social, economical, and psychological factors among greenhouse farmers.

• International Journal of Naval Architecture and Ocean Engineering
• /
• 제12권1호
• /
• pp.541-551
• /
• 2020

Based on the trend, there have been numerous researches analysing the ship collision risk. However, in this scope, the navigational conditions and external environment are ignored or incompletely considered in training or/and real situation. It has been identified as a significant limitation in the navigational collision risk assessment. Therefore, a novel algorithm of the ship navigational collision risk solving system has been proposed based on basic collision risk and vulnerabilities of marine accidents. The vulnerability can increase the possibility of marine collision accidents. The factors of vulnerabilities including bad weather, tidal currents, accidents prone area, traffic congestion, operator fatigue and fishing boat operating area are involved in the fuzzy reasoning engines to evaluate the navigational conditions and environment. Fuzzy logic is employed to reason basic collision risk using Distance to Closest Point of Approach (DCPA) and Time of Closest Point of Approach (TCPA) and the degree of vulnerability in the specific coastal waterways. Analytical Hierarchy Process (AHP) method is used to obtain the integration of vulnerabilities. In this paper, vulnerability factors have been proposed to improve the collision risk assessment especially for non-SOLAS ships such as coastal operating ships and fishing vessels in practice. Simulation is implemented to validate the practicability of the designed navigational collision risk solving system.

• 한국보건간호학회지
• /
• 제22권2호
• /
• pp.224-236
• /
• 2008

Purpose: The principal objective of this study was to assess the relationships of depression, fatigue, BMI, and health locus of control between urban and rural female middle school students. Methods: The study subjects included 377 girls in randomly-sampled middle schools in urban and rural provinces. The data were collected via self-recorded questionnaires from April 21.- to May 2. 2008, and analyzed using the SPSS Win 12.0 program. Results; 1) The mean score of depression was $10.22{\pm}5.72$ (urban), $10.81{\pm}4.92$ (rural). 2) The mean fatigue score was $50.43{\pm}1.57$ (urban), $51.90{\pm}9.70$ (rural). 3) BMI was classified into 3 groups: leptosomic, normal weight, and obesity groups. The mean BMI score was $18.73{\pm}2.05$ (Seoul), and $20.31{\pm}3.26$ (provincial). 4) The internal locus of control was higher than the external locus of control (urban). 5) Fatigue was correlated with depression (r=.512, p=.000) in both areas. The health locus of control was correlated with Fatigue (r=.153, p=.042) in province. Conclusion: An effective program to reduce the levels of fatigue and depression for middle school girls and to maintain normal weight is required. In particular, the high-risk depression group can be managed through community mental health care center deep interviews, and close observation.

• 대한한의학회지
• /
• 제41권3호
• /
• pp.205-220
• /
• 2020

Objectives: The aim of this review is to assess the clinical benefit of chuna for managing symptoms in chronic fatigue syndrome (CFS) Methods: We searched eligible studies from the following 11 databases with no language restriction: Pubmed, CENTRAL, Embase, CNKI, CQVIP, Wanfang, CiNii, OASIS, RISS and Koreamed. We selected randomized controlled trial (RCT), quasi-randomized controlled trial (Quasi-RCT) and controlled clinical trial (CCT) in which patients with chronic fatigue syndrome were treated with chuna. The results of the included studies were synthesized through meta-analysis, and their risk of bias were also assessed. Results: We searched 914 potentially relevant studies, and only 20 studies were selected for this systematic review. Meta-analysis showed that chuna was more effective in improving general symptoms (n=291, RR 0.19 [95% CI 0.11 to 0.32], Z=6.08, p<0.00001, I2=0%), fatigue (n=487, SMD -0.95 [95% CI -1.19 to -0.71], Z=7.76, p<0.00001, I2=37%) and sleep disorder (n=139, SMD -0.58 [95% CI -0.92 to -0.24], Z=3.36, p=0.0008, I2=0%) compared to health supplements or usual care. When chuna was used as an added intervention, it was more effective in improving general symptoms(n=729, RR 0.25 [95% CI 0.15 to 0.42], Z=5.19, p<0.00001, I2=0%) and fatigue severity alone(n=217, SMD -1.21 [95% CI -1.53 to -0.89], Z=7.45, p<0.00001, I2=15%) compared to control. Conclusion: We found that chuna was beneficial for improving severity of general symptoms and fatigue at post treatment in CFS patients.

• 영재교육연구
• /
• 제23권6호
• /
• pp.965-979
• /
• 2013

본고에서는 한병철(2012)이 제시하는 피로사회, 성과주의, 자기착취 등의 개념이 영재 및 영재교육과 어떠한 연관성이 있는가를 탐색한다. 특히 영재들의 완벽주의, 자신 및 주변으로부터의 높은 기대, 과제집착력, 다재다능함, 과도한 자기비판 등의 영재의 기질적 특성이 피로사회의 성과주의로부터 어떻게 영재를 고 위험군으로 만들 수 있는가를 논의한다. 또한 최근 교육 현장에서 많이 이슈가 되고 있는 영재들의 자살이슈가 어떻게 구조적으로 피로사회의 성과주의와 밀접하게 연관되어지는가를 고찰한다. 무엇보다 중요하게 본고는 피로사회의 성과주의가 왜 그리고 어떻게 창의성의 저하 및 궁극의 하류지향을 초래하며 이러한 현상이 영재들의 창의성 및 창의적 산출에 어떠한 관련성을 부여하는가를 비판적으로 고찰한다. 끝으로 본고는 사색적 삶의 복원 등 피로사회 극복을 위한 몇 가지 논의거리를 제시한다.