• Journal of Advanced Marine Engineering and Technology
• /
• v.34 no.2
• /
• pp.243-249
• /
• 2010

The improvement of fuel economy and the reduction of diesel exhaust PM(Particulate Matter) and $NO_X$ have been successfully achieved by supplying diesel engines with emulsified diesel oil. However, combustion analysis of emulsified C-heavy oil is difficult because the combustion characteristics of emulsified C-heavy oil compared to other fuels have a special form. Therefore, these experimental researches have analyzed the combustion characteristics of emulsified C-heavy oil in a chamber with high pressure and temperature. The pressure and the rate of heat releases in a combustion chamber was decreased with increasing the water content and the ignition delay time was increased with increasing the water percent.

• Korean Journal of Adult Nursing
• /
• v.27 no.6
• /
• pp.673-683
• /
• 2015

Purpose: This study was aimed to identify the mediating and moderating effects of safety-specific transformational leadership on the relationship between barrier to and intention of reporting medication errors. Methods: Two hundred thirty seven nurses from seven different hospitals participated in the study. Safety-specific transformational leadership was measured by an instrument with 10 items, barrier to reporting medication errors with 16 items, and intention of reporting medication errors with 3 items. The data was collected from September to October 2012. Descriptive statistics, factor analysis, t-test, ANOVA, Pearson correlation coefficient and a hierarchial regression analysis were used. Results: There were significant negative correlations between the subcategories of barrier to reporting medication errors and intention of reporting medication errors (r=-.16~-.27, p<.001), and a positive correlation between the intention and safety-specific transformational leadership (r=.25, p<001). Transformational leadership was a mediator between barrier to and intention of reporting medication errors. Conclusion: Safety-specific transformational leadership mediated the relationships between barrier to and intention of reporting medication errors. Enhancing safety-specific transformational leadership of nursing unit managers is necessary to increase the intention to reporting medication errors.

• Journal of Korean Academy of Nursing Administration
• /
• v.18 no.2
• /
• pp.166-175
• /
• 2012

Purpose: This study was done to identify the relationship between transformational leadership by head nurses and positive psychological capital, psychological well-being, stress and somatization of staff nurses. Method: Participants in this study were 300 staff nurses in general hospitals located in G and B cities. Data were collected using self-administered questionnaires and analyzed using SPSS Win 18.0 program. Result: The major findings were as follows; 1) There were positive influences of transformational leadership on positive psychological capital, psychological well-being, and a negative effect on stress. 2) Positive psychological capital had a positive influence on psychological well-being, and negative effects on stress and somatization. 3) In the analysis of the mediating role of the positive psychological capital, transformational leadership was shown to indirectly affect psychological well-being and stress through positive psychological capital. Conclusions: These findings suggest that transformational leadership has important influences on employees' psychological well-being and stress via employees' positive psychological capital. To enhance psychological well-being and reduce stress for nurses, it is important to develop not only the leadership of head nurses but also the positive psychological capital of staff nurses.

• Journal of Korean Academy of Nursing Administration
• /
• v.13 no.3
• /
• pp.373-383
• /
• 2007

Purpose: This descriptive study was designed to find out the relation between nurses' perceptions of leadership and organizational effectiveness. Method: The data was collected from nurses in 451, a tertiary hospital located in B city by means of structured questionnaires. The data was analysed by t-test. ANOVA, Pearson correlation coefficient. Results: The average age of the subjects was 29.1. Regarding the marital status, 68.1% were single. Regarding the nursing unit, 42.6% were working for the general surgical wards. The total period of clinical career was on average 73.7 months. Regarding the period in current ward, 51.0% were 1-less than 3 years. There was a positive correlation with transformational leadership, transactional leadership, job satisfaction, and organizational commitment, whereas the turnover intention had a negative correlation with transformational leadership and transactional leadership. Conclusion: The nurses' different perceptions of transformational leadership, transactional leadership, and organizational effectiveness have strong correlative relationships with each other. This finding suggests the importance of the head nurse's leadership in increasing organizational effectiveness.

• Journal of Korean Academy of Nursing Administration
• /
• v.11 no.3
• /
• pp.233-241
• /
• 2005

Purpose: The purpose of this study was to understand the components of successful leadership and organizational structural barrier to apply leadership perceived by head nurses. Method: We collected the data using interviews from August 1 to August 31 in 2003. The participants of this study were 19 head nurses from two university hospitals in Pusan. Result: Three categories of successful leadership in nursing organization were identified; leadership, opportunity, authority. Leadership category included accepting nurses' opinions, providing comfortable work environment, and interpersonal harmony. Opportunity category included verbal convincing for professional development and emotional support. Authority category included accomplishment and competence. Head nurses included autonomy, incentives, and equal opportunity across to different discipline as power category. Barriers identified by head nurses were lack of opportunity and power from hospital level. They seem to be frustrated when they don't have enough support from hospital. Conclusion: We think that head nurses have to apply effective leadership to achieve organizational goal and harmonious nursing environment. Based on the barriers identified in the study, interdisciplinary managemental intervention can lead better quality of care and nurses' work satisfaction which could further enhance hospital productivity and quality of care.

• Journal of Korean Academy of Nursing Administration
• /
• v.17 no.1
• /
• pp.96-105
• /
• 2011

Purpose: This study was performed to investigate the perceived relationship among professional self-concept, head nurse's leadership, and nursing clinical competency by clinical nurses. Methods: This study was a cross-sectional survey. Participants were 601 nurses working at the five general hospitals in four provincial cities, Gyeungbuk, Korea. Data were collected from July 14, 2010 to August 31 and analyzed by SPSS/PC ver 18.0 programs. Results: Professional self-concept and head nurse's leadership were slightly above the middle average, but nursing clinical competency was good. According to participants' age, marital status, job satisfaction, and length of service, there were perceptional differences in professional self-concept, head nurse's leadership, and nursing clinical competency. Nursing clinical competency could be explained by head nurse's leadership, professional self-concept, job satisfaction and length of service. Head nurse's leadership was independent variable affecting nursing clinical competency, professional self-concept was partial mediating variable, and job satisfaction and length of service were extraneous variables. Conclusion: It is concluded that head nurse's leadership is more important than professional self-concept to improve nursing clinical competency. Nursing managers should plan various strategies to improve head nurse's leadership and professional self-concept, to increase clinical nurses' job satisfaction and length of service.

• Journal of Korean Academy of Nursing Administration
• /
• v.21 no.5
• /
• pp.552-560
• /
• 2015

Purpose: This study was performed to identify the mediating effect of empowerment in the relationship between head nurses' servant leadership and organizational commitment among clinical nurses. Methods: A cross-sectional survey design was used. A convenience sample of 249 nurses was recruited from three hospitals located in J province, South Korea. Data were collected by self-report questionnaires, including general characteristics, servant leadership, empowerment, and organizational commitment. Data were analyzed with descriptive statistics, Pearson correlation coefficients, independent t-test, One-way ANOVA, and linear regression using the SPSS 22.0 program. Results: Head nurses' servant leadership perceived by clinical nurses significantly influenced their organization commitment. Empowerment partly mediated the effect of servant leadership on organizational commitment. Conclusion: The findings suggest the importance of improving nurse managers' servant leadership and empowering nurses to increase their organizational commitment.

• The Journal of Korean Academic Society of Nursing Education
• /
• v.24 no.4
• /
• pp.337-346
• /
• 2018

Purpose: The aim of this study was to understand and describe difficulties and needs experienced by head nurses in the clinical practice education of nursing students. Methods: A qualitative descriptive method was employed. A convenience sampling method was used to recruit participants from four hospitals in South Korea. Twenty-one head nurses participated in the first interview and 17 of them participated in the second interview. Data were collected through two in-depth interviews and field notes were written. Qualitative content analysis method was utilized for data analysis using ATLAS.ti 6.2 software. Results: Thirty-one codes and twelve categories were identified. Four themes emerged from data analysis, which included 'too many tasks', 'limitations of student education', 'many differences', and 'lack of support and resources.' Conclusion: This qualitative study described head nurses' many difficulties and needs in the clinical practice education of nursing students. The results of this study provide valuable understanding and knowledge of head nurses' experiences in students' clinical education, which leads to improvement of the quality of clinical education for nursing students.

• Journal of Korean Academy of Nursing Administration
• /
• v.20 no.4
• /
• pp.437-445
• /
• 2014

Purpose: The aim in this study was to identify head nurses' nursing performance according to their managerial competencies and professional nurse autonomy. Methods: From January 15 to January 31, 2013 a survey was distributed to 200 head nurses working in 5 tertiary hospitals in B city and J city. The response rate was 80% (160 responses). The survey content included the Managerial Competencies Scale (MCS), Schutzenhofer professional nurse autonomy Scale (SPNA), and Nursing Performance Scale (SPNA). Results: The score for MCS was 4.53, for SPNA, 177.05, and for SPNA, 4.62. Nursing performance was related to managerial competencies (${\beta}=0.741$; p<.001; SE=0.059) and professional autonomy (${\beta}=0.135$; p=.010; SE=0.001). These factors accounted for 64.8~67.3% of the variability in nursing performance. Conclusion: Results indicate that head nurses' performance would be improved through increased nursing managerial competencies and expansion of professional autonomy suggesting a need to develop work systems designed to achieve high managerial competency and professional autonomy in head nurses.

• Korea Journal of Hospital Management
• /
• v.14 no.3
• /
• pp.1-22
• /
• 2009

Purpose : The purpose of this study was to examine the effects of nursing organizational culture and head nurse's leadership on the job satisfaction. Methods : For the purpose, a structured questionnaire was conducted. The subjects were 232 nurses who were working in the 2 general hospitals. The data were collected from Sep. 1 to Sep. 20 of 2006. Data were analyzed using descriptive statistics, one-way ANOVA, t-test, Pearson Correlation Coefficient, and multiple regression. Results : The dominant organizational culture of nursing organization was rank-oriented culture. The mean score of head nurse's transformational leadership and transactional leadership was 3.20 and 2.79 respectively. The best group of job satisfaction was affiliative-oriented culture group(3.31). The score of job satisfaction of transformational leadership's group was higher than that of transactional leadership's group. Job satisfaction was positively correlated with affiliative-oriented culture, innovative-oriented culture, task-oriented culture, and transformational leadership. Concerning of the job satisfaction, affiliative-oriented culture, rotation time and age explained 25.7%. Conclusion : The organizational culture and head nurse's leadership was correlated with job satisfaction. Especially affiliative-oriented culture and task-oriented culture influenced the job satisfaction. Based on the results, further development should be continued to develop the effective head nurse's leadership and organizational culture to improve the job satisfaction of nurses.