• 보건행정학회지
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• 제22권3호
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• pp.347-364
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• 2012

Objective : The purpose of this study was to investigate the effect of preceptors' transformational leadership on job stress and clinical performance among new graduate nurses. Methods : The study subjects were 180 new nurses in three University Hospitals. General characteristics, leadership, job stress and clinical performance were collected using self-reported questionnaires. Transformational leadership consisted of charisma, intellectual stimulation and individual consideration. T-test, ANOVA, pearson correlation and multiple regression analysis were performed to access the effect of leadership on job stress and clinical performance. Results : Of 180 subjects, 94.4% were female. The mean scores of transformational leadership, charisma, intellectual stimulation and individual consideration were $3.9{\pm}.46$, $3.9{\pm}.46$, $3.9{\pm}.57$ and $4.0{\pm}.58$, respectively. In multiple regression analysis, overall transformational leadership(${\beta}$=.154, p=.006) and charisma(${\beta}$=.388, p=.008) significantly increased the job stress. On the other hand, individual consideration significantly decreased the job stress (${\beta}$=-.671, p=.048) and increased the clinical performance(${\beta}$=2.472, p=.024). Conclusions : Charisma of preceptors was associated with the increase of job stress, and individual consideration was associated with the decrease of job stress and improvement of clinical performance. Therefore, the preceptors' leadership focusing on individual consideration rather than charisma may reduce job stress and improve clinical performance in the University hospital organization.

• 한국환경보건학회지
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• 제30권3호
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• pp.272-282
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• 2004

Stress is a primary health promotion issue in worksite research because psychological distress is closely related not only to workers　 health status but also to their job performance. This study identified the work environment and work condition factors affecting workers　 stress symptoms among the Korean manufacturing factory workers. A total of 7,818 factory workers employed in 1,562 manufacturing companies participated in the Korean nation-wide occupational health survey conducted by the Korean Occupational Safety and Health Agency in 2003. Participants were selected by the stratified proportional sampling process by standardized industry classification, company size, and locations. Trained interviewers visited the target companies and interviewed the factory workers randomly selected in each company. Work environments included physical work environments (temperature, noise, hazardous organic compounds, and so on) and psychological work environments (job demands, job control, and social support at work), and work conditions included daily working hour, rest time, and so on. Men were 71.5% and the mean age was 34.0 years old. The average working period in the present company was 6.9 years. The average stress score was 26.2 under the perfect score, 50, which means the moderate level of stress. Perceived stress had significant correlations with young age, poor physical work environment, high fatigue, bad perceived health status, and high job demands in Pearson's simple correlation analysis. Perceived health status and perceived fatigue explained 21% variance of stress symptoms and the work environment factor explained 4.8% of that; however, work condition did not have the sufficient effect. In particular, psychosocial work environment variables (job demand, job control, and social support at work) had a clear effect on stress symptoms rather than the physical work environments. Poor perceived health status, severe perceived fatigue, poor physical work environment, high job demands, low social support, heavy alcohol consumption and little exercise were significantly related to high stress symptoms in the Korean manufacturing workers.

• The Korean Journal of Physiology
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• 제14권1호
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• pp.1-5
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• 1980

This study was under taken to investigate the influences of predictable or unpredictable stress upon gastric ulceration, and the hippocampectomy upon the ulceration order the stressful conditions. Sixty male albino rats(Sprague-Dawley strain) were divided equally into 3 groups: One was the hippocampal group(N=20) which received hippocampal ablation by suction, another was the cortical control group(N =20) which received partial cortical ablation over the hippocampus, and a third was the normal control group(N=20). Each group was further divided into two subgroups: One was the predicted subgroup(N=10) in which animals could predict the imminent stressful stimuli by hearing a sound(1,000 Hz, 2 sec in duration) 3 sec before the onset of the stress, and the other was the unpredicted subgroup(N=10). After starvation for 24 hours, but water ad libitum, each rat received the electric stimulation(3 mA, 60 Hz, 2 sec in duration, and once per minute in average) for 6 hours via a pair of electrodes attached on the tale. The electric stimulation served as the stress causing the gastric ulcer. Five hours after completion of stimulation, the stomach filled with the physiological saline was removed under deep anesthesia and spread out on a small glass plate. The numbers of the ulcer in each stomach were counted and the shape was examined under the dissecting microscope. Results obtained were as follows: 1. The mean numbers of the ulcer of the predicted subgroups were significantly larger than those of the unpredicted subgroups in the normal control and the cortical control groups, but there was no difference between the values of the two subgroups in the hippocampal group. 2. The mean numbers of the ulcer of the predicted subgroups in the normal control and the cortical control groups were larger(but not significant) than that in the hippocampal group. It is inferred from the above results that the prediction of the stress strengthens the effect of the stress on the gastric ulceration, and the hippocampus facilitates the effect of the prediction of the stress.

• Structural Engineering and Mechanics
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• 제53권5호
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• pp.1051-1066
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• 2015

The study aims on the effect of material dependency in elastic- plastic contact models by contact analysis of sphere and flat contact model and wheel rail contact model by considering the material properties without friction. The various materials are selected for the analysis based on Young's modulus and yield strength ratio (E/Y). The simulation software 'ANSYS' is employed for this study. The sphere and flat contact model is considered as a flattening model, the stress and strain for different materials are estimated. The simulation of wheel-rail contact model is also performed and the results are compared with the flattening model. The comparative study has also been extended for finding out the mean contact pressure for different materials the E/Y values between 150 and 660. The results show that the elastic-plastic contact analysis for materials up to E/Y=296.6 is depend on the nature of material properties and also for this material the mean contact pressure to yield strength reaches 2.65.

• Journal of Yeungnam Medical Science
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• 제18권1호
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• pp.59-66
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• 2001

본 연구에서 질전벽슬링술을 시행한 여성 복압성 요실금 환자 42명 중 술후 평균 29.4개월 후 추적 관찰시 92.9%의 성공률과 90.5%의 만족률을 보였으며, 수술에 따른 심각한 부작용은 없었다. 높은 치료성적, 비교적 간편한 술기, 해부학적 요실금과 내인성 요도괄약근 기능부전 모두에 적용할 수 있다는 장점이 있어 질전벽슬링수술은 여성 복압성 요실금의 수술치료에 효과적이고 유용한 방법으로 생각된다.

• 한국수산과학회지
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• 제26권6호
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• pp.538-548
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• 1993

한국 동해 연안역 해수순환 및 수온분포에 대한 바람응력의 효과에 관하여 검토하였다. 동해상의 바람응력은 국립수산진흥원 정선관측 바람자료 및 일본기상청 Buoy No. 6에서의 10년간($1978{\sim}1987$)의 약 5,100개의 바람 관측자료를 사용하여 계산하였다. 여름과 겨울의 계절풍의 전환에 따른 에크만 수송의 변화가 대한해협에서의 대마난류 수송량에 미치는 영향을 정량적으로 평가하였다. 특히 동해에서의 평균적인 바람응력의 회전성(wind stress curl) 값이 음이 되는 사실에서 울릉도 근해의 난수층의 형성에 부분적으로 도움이 됨을 알았다. 한편, 동해 난수층의 분포를 단순화된 3층 경계면모델을 적용하여 설명하였다.

• 한국직업건강간호학회지
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• 제15권2호
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• pp.133-143
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• 2006

Purpose: The purpose of this study was to examine the relationship between perceived job stress and work environmental factors related with socioeconomics factors and physical burden in the golf caddies. Methods: Job stress in golf caddies was estimated by using the Karasek's job content questionnaire (JCQ) and work environmental factors were estimated by self-reported questionnaire and interview. Results: The subjects were 316 woman caddies who had never been occupationally exposed to hazardous chemicals, was mean age 31.1 years. Mean work duration was 6.44 years and working hours per day on low- and high-demand season were 6.16 and 10.51, respectively. The golf caddies displayed higher scores of job stress due to multiple factors such as working hours and frequency of rounding per week, physical burden, confliction, income satisfaction and employment stability. We found that high strain group was positive correlation with age, career, working hour (including frequency of rounding) and job demand, however, showed negative correlation with job decision latitude and support of supervisor and coworker. Conclusion: In conclusion, we suggest that the golf caddies be regard divided into high strain group as appropriate. Thus, stress management and health promotion program for golf caddies should be developed.

• 문화기술의 융합
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• 제8권1호
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• pp.167-174
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• 2022

본 연구는 간호대학생을 대상으로 주관적 행복감의 정도를 알아보고, 학업스트레스, 자기효능감, 문제해결능력이 주관적 행복감에 미치는 영향을 확인하기 위하여 시도되었다. 연구참여자는 B시 2개 대학의 간호대학생 348명을 대상으로 실시하였다. 자료분석은 SPSS 22.0 프로그램을 이용하여 실수, 백분율, 평균, 표준편차, t-test, ANOVA, 피어슨 상관계수, 다중회귀분석으로 분석하였다. 대상자의 주관적 행복감은 41.91±9.53점이었다. 주관적 행복감은 학업스트레스(r=-.523, p<.001)와 부적상관관계, 자기효능감(r=.515, p<.001), 문제해결능력(r=.466, p<.001)과 정적상관관계를 나타냈다. 주관적 행복감에 영향을 미치는 요인은 학업스트레스(β=-.351, p<.001), 자기효능감(β=.255, p<.001), 문제해결능력(β=.132, p=.049)으로 나타났고, 설명력은 37.2%로 확인되었다. 본 연구결과를 통하여 간호대학생의 주관적 행복감을 향상하기 위하여 학업스트레스를 줄이고, 자기효능감과 문제해결능력을 높일 수 있는 다양한 프로그램 개발이 필요하다.

• 대한기계학회논문집
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• 제12권6호
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• pp.1350-1357
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• 1988

A computer software was developed for predictions of fatigue crack initiation life of notched members under variable loadings. The software was constructed based on a new fatigue life prediction method utilizing modified .epsilon.-N curves, which can account for the stress interaction effect. The effect of mean plastic strain on low-cycle fatigue life was also incorporated in the software. The software can be utilized for the first step approximation when fundamental data of material fatigue properties are not available.

• 한국간호교육학회지
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• 제16권1호
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• pp.14-23
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• 2010

Purpose: The purpose of this study was to investigate the relationship among stress, depression, coping styles and satisfaction of clinical practice in nursing students. Method: Two hundred fifty-eight nursing college students in 1 city were selected by convenient sample. A questionnaire measured the level of stress, depression, coping styles and satisfaction of clinical practice. The data were analyzed using descriptive statistics, t-test, ANOVA, and Pearson's correlation coefficient. Result: The mean score of stress was 2.82 (${\pm}.39$), depression was 19.23 (${\pm}7.70$), coping styles was 2.42 (${\pm}.42$), and satisfaction of clinical practice was 2.81 (${\pm}.41$). There were significant differences on four variables according to the satisfaction of a nursing major. Stress had a significant positive correlation with depression, and a negative correlation with problem focused coping and satisfaction of clinical practice. Depression had a significant negative correlation with satisfaction of clinical practice. Emotional focused coping had a significant positive correlation with depression, and problem focused coping had a significant negative correlation with depression. Conclusion: From the studies reviewed, one can expect a positive effect on decreasing stress and depression among nursing students when the nursing educators use counseling and instruction for clinical practice.