• International Journal of Railway
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• v.2 no.2
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• pp.93-97
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• 2009

The experiments for aerodynamic characteristics of railway acoustic screen are performed using 1/61 scaled-down moving model rig facility which employs an axis symmetry and one wire guidance method. The launching mechanism is an air-gun type. The train model for the experiment is the high speed train (Korea Train Express: KTX) and the tested speed is about 300 km/h. The tested train length is 61 em which is corresponding to two units of KTX train. The cross sectional area and weight of train model are 0.00264 $m^2$ and 287 g, respectively. The Reynolds number based on the model train length is $1.2{\times}10^7$. The strength of pressure wave is measured using piezo typed pressure sensor. The measured pick value of pressure was as high as 365 Pa in the shortest gap between the acoustic screen and model train. The measured pressure is well compared with the field test data of mc 779-1 [2] values. However, the experimental data were slightly lower than the mc 779-1 values. The results show the model test can be used as a substitute for the field test.

• The Journal of Korean Academic Society of Nursing Education
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• v.14 no.2
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• pp.195-204
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• 2008

Purpose: This study was performed to measure the justice of compensation (distributive justice, procedural justice) and the intention of turnover perceived by nurses, and to identify the relationship between these two variables. Method: This study was a cross-sectional survey. From May 26 to June 30, 2008, data were collected from the 300 nurses working at 6 general hospitals in 5 cities, Korea. Result: The score of compensatory justice was 2.47(distributive justice was 2.46, procedural justice was 2.48), and the score of turnover intention was 3.39. The Pearson Correlation Coefficient between these two variables was -.496. The perceived compensatory justice(distributive justice, procedural justice)by nurses, their age and working periods were the affecting factors on their turnover intention, and the power of explanation of these affecting factors was 43.4%. Conclusion: According to the results, procedural justice is the most powerful factor among these affecting factors. Therefore, it is concluded that to decrease nurses' turnover intention, nursing or hospital managers have to fairly operate their compensation system, especially procedural justice, in their organization.

• Physical Therapy Rehabilitation Science
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• v.1 no.1
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• pp.13-16
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• 2012

Objective: Electroencephalogram (EGG)-feedback is a training procedure aimed at altering brain activity, and is used as a treatment for disorders like attention. The purpose of this study was to determine the effects of external focus of attention by EGG-feedback on balance in young adults. Design: Cross-sectional study. Methods: Subject were students in Sahmyook University. Fifty young adults in their twenties and thirties. Subjects were performed both with and without external focus of attention by EEG-feedback on the posture of standing and tandem standing. Participants were educated effort to maintain static posture when they were under internal focus of attention. Good Balance System was used for measurement of postural consistency upon the following force platforms. Results: Body sway decreased significantly both normal standing and tandem standing with external focus of attention by EEG-feedback (p<0.05). Conclusions: The results demonstrate that the benefits of an external attentional focus are generalizable to young adults. The external focus of attention outperformed the internal focus of attention on the postural balance (p<0.05). It is showed that external focus of attention significant effects on balance by revoked automatic postural control of movement. Furthermore balance might be improved by training with an external focus. Further study is required to develop for training as a method of preventing fall in elderly peoples.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.25 no.12
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• pp.1009-1014
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• 2012

Hydrogenated amorphous silicon (${\alpha}$-Si:H) layers deposited by plasma enhanced chemical vapor deposition (PECVD) are investigated for use in silicon hetero-junction solar cells employing n-type crystalline silicon (c-Si) substrates. The optical and structural properties of silicon hetero-junction devices have been characterized using spectroscopy ellipsometry and high resolution cross-sectional transmission electron micrograph (HRTEM). In addition, the effective carrier lifetime is measured by the quasi-steady-state photocoductance (QSSPC) method. We have studied on the correlation between the order of ${\alpha}$-Si:H and the passivation quality at the interface of ${\alpha}$-Si:H/c-Si. Base on the result, we have fabricated a silicon hetero-junction solar cell incorporating the ${\alpha}$-Si:H passivation layer with on open circuit voltage ($V_{oc}$) of 637 mV.

• Journal of Korean Academy of Nursing Administration
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• v.18 no.3
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• pp.290-300
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• 2012

Purpose: The purpose of this study was to investigate differences in professionalism, organizational citizenship behavior and psychological ownership between nurses and nurse officers. Method: A cross-sectional survey was conducted with 1017 hospital nurses and military nurse officers. The instruments used were the Korean Version of Hall's Professionalism Inventory' modified by Baek (2007), Organizational Citizenship Behavior Qquestionnaire(OCBQ) modified by Lee (2006), and the Psychological Ownership Inventory' developed by Van Dyne and Pierce (2004). Results: The average score for military nurse officers professionalism was 3.15, for organizational citizenship behavior, was 3.43 and for psychological ownership, 3.64. These scores were higher than the scores for hospital nurses. There were significant positive correlations between the variables(r=.47~.581, p<.001). Conclusion: The results of this study indicate an affirmable outcome and that the significant variables affected levels of Professionalism, Organizational citizenship behavior, and Psychological ownership. So in order to improve the level of variables, there is a need to consider strategies related to organization, work environment and conceptualization as related to the variables.

• Journal of Korean Academy of Nursing Administration
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• v.18 no.3
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• pp.310-319
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• 2012

Purpose: The purpose of this study was to analyze emotional labor factors influencing job satisfaction, intent to leave, and nursing performance of clinical nurses. Method: The participants were 384 clinical nurses working in a hospital. Study design was cross sectional survey. Subcategories of emotional labor (frequency of emotional labor, attentiveness of emotional display, mismatch of emotions) of emotional labor were dependent variables. Job satisfaction, intent to leave, and nursing performance were independent variables. Data were analyzed by hierarchial multiple regression. Results: The strength of emotional labor of nurses was similar for all participants in spite of differences in age, position, and clinical career. Total score for emotional labor was 3.21, frequency of emotional labor 3.34, attentiveness of emotional display 3.41, and mismatch of emotions 2.87. Mismatch of emotions influenced job satisfaction (F=12.53, p<.001) $R^2$ 27%, intent to leave (F=8.51, p<.001) $R^2$ 19%, and nursing performance (F=5.80, p<.001) $R^2$ 15%, Conclusion: These findings indicate that the factor (mismatch of emotion) is an important variable for clinical nurses in human resource management. Therefore, nurse managers should consider this factor for the improvement of organizational effectiveness.

• Journal of East-West Nursing Research
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• v.13 no.1
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• pp.57-65
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• 2007

Purpose: This study was conducted to explore sexual attitude, sexual behavior and the related factors in chinese-Korean university students. Method: A self-administered questionnaire with cross-sectional design was used. Participants were 271 Chinese undergraduate students in one university in Jilin, China. Correlation coefficiency and t-test were used to find the relationships and to compare sexual attitude and sexual behavior and related factors. Result: Although sexual attitude of participants was moderate, they were more likely to be engaged in sexual behavior. The strong relationship between sexual attitude and sexual behavior suggested that those who have a permissive sexual attitude were more likely to have engaged in sexual behavior. The participants who responded that their parents have a less permissive attitude about sexual activity were less likely to be engaged in sexual behavior. There were significant relationships between sexual behavior and other variables, such as dating, experience of sexual activity, smoking and grades. Conclusion: Students who have a higher score of sexual attitude and had an experience of sexual activity were more likely to be at higher risk of being sexually.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.14 no.4
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• pp.474-482
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• 2007

Purpose: This study was done to provide fundamental data for nursing interventions to prevent and reduce fatigue and to identify fatigue and kidney disease symptoms in female patients on hemodialysis and evaluate factors associated with this fatigue. Method: A cross-sectional study design was used with self-administered questionnaires which included general characteristics and the fatigue scale developed by Brown, Dittner, Findly, & Wessely(2005)(Cronbach's $\alpha=0.98$ and for present study $\alpha=0.96$) and a review of laboratory data. From eight dialysis units, 84 women were enrolled. Data were analyzed using the SAS program. Results: Mean score for fatigue was 49.4(range $16{\sim}78$) and fatigue by research variables was significantly different by age(0.046), employment status(0.041), menopause(0.009), hypoalbuminemia(0.022), length of time on dialysis(0.48) and kidney disease symptoms(0.000). Correlations between fatigue and lack of strength, dizziness, and cramps after dialysis were significantly higher. Factors affecting fatigue were kidney disease symptoms and length of time on dialysis, explaining 49.2% of fatigue. Conclusion: A comprehensive approach considering kidney disease symptoms, length of time on hemodialysis, age, menopause, and hypoalbuminemia are required for interventions to reduce fatigue in female patients on hemodialysis.

• Journal of Korean Academy of Nursing
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• v.34 no.7
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• pp.1234-1242
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• 2004

Purpose: This cross-sectional study was designed to identify anger-expression types of adolescent women and investigate the relation between the identified anger-expression types and their problem behaviors and health status. Method: One hundred ninety nine high school freshmen were recruited from September to November, 2003. Data was analyzed using descriptive statistics, cluster analysis, 2-test, ANOVA, and Duncan's multiple comparison test. Result: Three anger-expression types in adolescent women were found; Anger-out/in, Anger-control/in, and Anger-control type. Adolescent women with frequently using the anger-out/in type and with higher state anger reported more delinquent behaviors, more health risk behaviors, and higher psychosomatic symptoms. However, adolescent women with lower state anger and frequently using the anger-control type reported more depression scores. Conclusion: There is a need to further clarify the relationship between anger-expression type sand depression in adolescent women. The findings suggest the necessity of a development of the program for lowering the anger level and controlling the unfavorable anger expression types such as the anger-out in.

• Journal of Korean Academy of Nursing
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• v.35 no.3
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• pp.535-545
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• 2005

Purpose: This paper reports a study exploring factors related to patient satisfaction and dissatisfaction with inpatient care. Method: A cross-sectional study design was used, employing data from the National Health and Nutrition Survey conducted in 2001. Socio-demographic factors, utilization, self-rated health status, and disease characteristics were assessed by employing univariate comparisons and multivariate logistic regression analyses. Result: Out of 37,769 respondents, 1,043 aged 20 years and over had been admitted to a hospital or clinic at least once during the past year. About a quarter of the respondents were discharged from tertiary hospitals and $21\%$ from clinics. The majority of patients ($58\%$) were satisfied with inpatient care received, whereas $11\%$ were dissatisfied. Greater satisfaction was found in patients aged 45-64 years and those having formal education, discharge from tertiary hospitals, national health insurance as a payer, medical expenses not being burdensome, good self-rated health status, and neoplasm. Living in non-metropolitan urban areas, shorter length of stay, and musculoskeletal diseases were associated with greater dissatisfaction. Conclusion: Different factors were related to patient satisfaction and dissatisfaction with care. Those factors need to be taken into account when evaluating and comparing satisfaction levels between health care institutions.