• Journal of Korean Critical Care Nursing
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• v.3 no.1
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• pp.29-40
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• 2010

Purpose: This study was to investigate Job Stress and the Health status of ICU Nurses. Methods: Data was accumulated from 230 ICU nurses serving at least more than one year in 500 bed order hospitals during the period of three months from June 1 to August 31, 2009. Results: The average job stress was $3.14{\pm}.59$ points, which was relatively high, The average health status was $1.52{\pm}.19$ points, There was significant difference according to religion and subjective health status in Job Stress, There was significant difference according to age, religion and subjective health status in Health Status, There was significant difference according to satisfaction of work, satisfaction of personal relations, impulse to give up duty and in service education in Job Stress, There was significant difference according to satisfaction of work. satisfaction of personal relations, and expectant nursing job in Health Status, There was significantly negative relationship between job stress and health status. Conclusion: Job stress has the most important impact on health status of ICU nurses, Based on the finding, we could conclude that job stress management of ICU nurses should be required to improve health status.

• Child Health Nursing Research
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• v.21 no.3
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• pp.236-243
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• 2015

Purpose: In this study self-efficacy, emotional labor, pediatric nurse-parent partnership and job stress of pediatric nurses were examined. Factors affecting job stress of pediatric nurses were also investigated. Methods: The study was done between June and September 2014, with a convenience sample of 145 nurses from 3 advanced general hospitals, 5 general hospitals and 2 children's hospitals. Research data were collected via questionnaires and analysed using SPSS version 18.0. Results: Average levels of self-efficacy, emotional labor and job stress were similar to other general nurses and the average level of pediatric nurse-parent partnership was also similar to other pediatric nurses. Job stress of pediatric nurses showed a positive correlation with emotional labor and negative correlations with self-efficacy and pediatric nurse-parent partnership. The most significant factor affecting job stress in pediatric nurses was emotional labor (${\beta}=0.372$, p<.001). The combination of emotional labor, pediatric nurse-parent partnership and self-efficacy accounted for 25.4% of job stress in pediatric nurses. Conclusion: These results suggest that nursing management strategies to decrease emotional labor and improve pediatric nurse-parent partnerships and self-efficacy are critical to decrease job stress for pediatric nurses. Continued development of nursing management interventions to decrease job stress in pediatric nurses is suggested.

• Proceedings of the Korean Society for Technology of Plasticity Conference
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• 1994.10a
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• pp.74-79
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• 1994

The log-log presentation of stress versus Larson-Miller parameter is obtained by uniaxial tensile test instead of the long time creep test. The used material for example calculations is SUS304 stainless steel. The temperature of the uniaxial tensile test can be determined by the Larson-Miller parameter of the design stress and the 0.1hr's rupture time of the uniaxial tensile test. The rupture time at the design temperature and stress can be determined by the Larson-Miller parameter of the stress. The average creep rate is the total deformation of the tensile test divided by the rupture time at the design stress and temperature. The liner trend and the order of the data of the average creep rate by this method is almost same as that of experimental results.

• Computers and Concrete
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• v.1 no.1
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• pp.77-98
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• 2004

This paper presents a numerical model for simulating the nonlinear response of reinforced concrete (RC) shear walls subject to cyclic loadings. The material behavior of cracked concrete is described by an orthotropic constitutive relation with tension-stiffening and compression softening effects defining equivalent uniaxial stress-strain relation in the axes of orthotropy. Especially in making analytical predictions for inelastic behaviors of RC walls under reversed cyclic loading, some influencing factors inducing the material nonlinearities have been considered. A simple hysteretic stress-strain relation of concrete, which crosses the tension-compression region, is defined. Modification of the hysteretic stress-strain relation of steel is also introduced to reflect a pinching effect depending on the shear span ratio and to represent an average stress distribution in a cracked RC element, respectively. To assess the applicability of the constitutive model for RC element, analytical results are compared with idealized shear panel and shear wall test results under monotonic and cyclic shear loadings.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.9
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• pp.405-411
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• 2019

In this study, tensile tests were carried out on materials (A516-60, A283-C, A285-C, and SB410) for structural and pressure vessels at temperatures of $20^{\circ}C$, $-20^{\circ}C$, and $-40^{\circ}C$, and the changes in the mechanical properties were analyzed. Compared to the results at $20^{\circ}C$, the average yield stress increased by 6.4% and 7.5% at $-20^{\circ}C$ and $-40^{\circ}C$ for A516-60, while the average tensile stress increased by 1.3% and 4.1%, respectively. The average elongation decreased by 4.7% and 20.4% at these temperatures. In the case of A283-C, the average yield stress increased 8.8% and 9.8%, the average tensile stress increased by 4.1% and 5.9%, and the average elongation rate decreased by 7.4% and 9.9% at $-20^{\circ}C$ and $-40^{\circ}C$, respectively. For A285-C, the average yield stress increased by 1.8% and 8.6%, and the average tensile stress increased by 2.6% and 5.3%, respectively, but there was little change in the average elongation. Finally, for SB410, the average yield stress increased by 7.1% and 11.8%, the average tensile stress increased by 4.3% and 5.5%, but the average elongation rate decreased by 8.7% and 13.5%, respectively.

• Korean Journal of Adult Nursing
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• v.22 no.4
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• pp.418-429
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• 2010

Purpose: This study was performed to identify the relationship between Sense of Humor, Coping Humor, Perceived stress and self-esteem in the middle-aged women. Methods: Data were collected from the 20th of June to the 30th of August in 2009 from 145 middle-aged women living in Seoul. Data analysis was done with SPSS/WIN 12.0 program for descriptive statistics and Pearson correlation. Results: The mean score of the humor sense was $55.94{\pm}6.52$, coping humor was $21.11{\pm}3.82$, perceived stress was $22.21{\pm}3.03$ and self-esteem was $27.50{\pm}2.88$. Subcategories of sense of humor were that emotional expressiveness was average $20.75{\pm}2.70$, meta-message sensitivity was average $20.12{\pm}2.74$ and liking of humor was average $15.13{\pm}3.44$. Sense of humor was difference according to the economic status(t=2.000, p=.047), coping humor was difference according to the on medication use(t=2.227, p=.027). There was a significant correlation between the coping humor, perceived stress and the self-esteem. When the coping humor was higher, perceived stress was lower and the self-esteem was higher. Conclusion: This study showed that medication and economic status influences the humor scores and the sense of humor and coping humor were related to perceived stress and self-esteem in middle-aged women Therefore, these findings can provide the basis for the development of nursing intervention to increase the ability to coping with stress.

• Journal of the Korean GEO-environmental Society
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• v.12 no.6
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• pp.5-15
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• 2011

In this study, centrifuge model tests were performed to investigate stress concentration ratio, stress characteristics of soft clay ground improved by granular compaction piles with changes of piles type, loading condition and area replacement ratio. From the results of rigid loading tests, while vertical stresses acting on clay ground is similar, vertical stresses acting on GCP is larger than those acting on SCP with same replacement ratio. Also, average stress concentration ratio is increased proportionally with increasing the area replacement ratio of GCP and SCP. It was evaluated that average stress concentration ratio of soft clay ground improved by GCP is larger than that of SCP. As a result of flexible loading tests, stress concentration ratio is the highest when replacement ratio of GCP and SCP is 40%. Average stress concentration ratio of soft clay ground improved by GCP is a little more higher than is improved by SCP.

• Women's Health Nursing
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• v.10 no.3
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• pp.261-265
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• 2004

Purpose: This study was aimed to investigate direct care stress and job satisfaction in home care nurses. Method: Subjects were 139 home care nurses of hospitals in urban cities. Data was collected by a self report questionnaire. Direct care stress was measured by Community Health Nurses Perceptions of Work-Related Stressors Questionnaire. Job satisfaction was measured by a visual analogue scale. Results: The average score of direct care stress was 60.4. There were significantly high direct care stress in those who had less than that 3 years experience than in their counterparts. The average score of job satisfaction was 79.5. There were significant high job satisfaction in those who willingly chose to work. Direct care stress negatively correlated with the length of office experience of the home care nurse. Conclusion: A direct care educational program should be developed for those who have less than 3 years experience to decrease their stress level.

• Journal of Korean Academy of Nursing
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• v.25 no.1
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• pp.110-123
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• 1995

This study was done to analyze the relationship between task stress and morale in psychiatric nursing assistants. The subjects were 118 psychiatric nursing assistants selected from the National Mental Hospital in Seoul and 18 non-medical mental institutions. The data were collected from October 22 to November 12, 1994. The instruments used for this study were modified PNOSS (Psychiatric Nurse Occupational Stress Scale) which was developed by Bai and modified the Morale scale which was developed by Oh. The confidence varification of these instruments were computed and Cronbach $\alpha$=.9255, .9260. Data were analyzed by t -test, ANOVA on 5% significant level and Pearson correlation coefficient. The results of the study are as follows : 1. The average work stress scores of subjects were 2.83. Among the work stress factors : the conflict with nurse was identified as the most stress factor. There was significant relationship between the degree of work stress and the variables of psychiatric Nursing Assistants such as the marital status, educational level, religion, job satisfaction, working place, predicted period of work. 2. Average total morale scores for the subjects was 3.08. There was a significant relationship between the degree of morale and variables of psychiatric nursing assistants such as working place, certification as a nursing assistant, job satisfaction, opportunity for practical education and predicted period of work. 3. There was a significant relationship between the degree of morale and work stress factors such as administration problem, work overload.

• Bulletin of the Society of Naval Architects of Korea
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• v.3 no.1
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• pp.19-24
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• 1966

The maximum shear stress distribution in a stiffening flat attached to a plat undergoing a single tensile force has been investigated by photoelastic method. In the experiments a photoelastic model, as shown in Fig. 1, has been studied in the fields of a polariscope, as shown in Fig. 2. Fig. 3 shows the isoclinics and Fig. 4 and 5 are stress trajectories of the principal stresses and maximum shear stresses, respectively. Fig. 6 is the isochromatics in light field. The maximum shear stress at each point in the stiffener were determined from the isochromatics in both of light field of light field and dark field. Then the maximum shear stresses were divided by the average shear stress in the model, to obtain the ratio ${\tau}max/{\tau}av$ at each point. Finaly the variations of the ratio ${\tau}max/{\tau}av$ along the horizontal and vertical lines in the stiffener have been plotted, as shown in Fig. 7 and 8. The conclusions reached in this investigation are as follows: (1) The shear stresses transmitted to the stiffener through the juncture are concentrated on the end portions. (2) The maximum shear stress at the ends of the stiffener reaches to about 4 times of average shear stress. (3) The irregularities in the stress distribution are restricted in the end portions of the stiffener.