• Journal of Information Processing Systems
• /
• v.11 no.4
• /
• pp.616-629
• /
• 2015

A mobile terminal will expect a number of handoffs within its call duration. In the event of a mobile call, when a mobile node moves from one cell to another, it should connect to another access point within its range. In case there is a lack of support of its own network, it must changeover to another base station. In the event of moving on to another network, quality of service parameters need to be considered. In our study we have used the Markov decision process approach for a seamless handoff as it gives the optimum results for selecting a network when compared to other multiple attribute decision making processes. We have used the network cost function for selecting the network for handoff and the connection reward function, which is based on the values of the quality of service parameters. We have also examined the constant bit rate and transmission control protocol packet delivery ratio. We used the policy iteration algorithm for determining the optimal policy. Our enhanced handoff algorithm outperforms other previous multiple attribute decision making methods.

• Journal of Korean Academy of Nursing Administration
• /
• v.6 no.2
• /
• pp.281-290
• /
• 2000

The purpose of this study was to identify the relationship between the head nurses' leadership style the and the autonomy perceived by nurses and to provide the basic data for developing strategies of the effective nurse staff management. The subjects were 177 nurses who were working at the 3 general hospitals in Seoul. The data were collected from December 1999 to January 2000 by the structured questionnaires. For data analysis, descriptive statistics, ANOVA, Pearson correlation coefficient, and stepwise multiple regression with $SPSS-PC^+$ version 8.0 were used. The results of this study were as follows : 1. The score of 'the head nurses' transformational leadership perceived by nurses' was highier than that of 'the head nurses' transactional leadership'. Among 5 subdimensions of 'the leadership styles perceived by nurse', the scores of the 'charisma' and 'intellectual stimulation' were highest and the lowest one was that of 'extra management'. 2. Only 'the head nurses' transformational leadership perceived nurses' and 'the situatuational reward' showed a significant difference according to the married status ; nurses who were married showed higher scores than who were not. 3. 'The autonomy perceived by nurses' showed a significant difference according to the educational background ; nurses who had master degree showed higher score than who had diploma. 4. 'Charisma' was positively related to 'intellectual stimulation', 'individual consideration', and 'situational reward'. 'Intellectual stimulation' was positively related to 'individual consideration' and 'situational reward'. 'Individual consideration' was positively related to 'situational reward'. But 'extra management' was negatively related to all of variables. 'Autonomy' was significantly related to 'individual consideration' and 'the transformational leadership'. 5. The determinents of 'the autonomy perceived by nurses' were 'individual consideration' and the educational background, and they explained 15.4% of the total variance of it. The key determinent variables was 'individual consideration'. It explained 11.5% of the total variance of the autonomy. According to the results of this study, the suggestions were as follows: 1. It is necessary to develop strategies for exercising the head nurses' transformational leadership in nursing department : It should to be considered the difference in the leadership style perceived by nurses according to demographic variables. 2. The further studys on the individual consideration of head nurses' transformational leadership and the opportunity of self-development such as education for enhancing nurses' autonomy is needed.

• Journal of Korean Academy of Nursing
• /
• v.32 no.6
• /
• pp.812-822
• /
• 2002

The Purpose of this study was to identify the relationship among leadership style of nurse managers, job satisfaction, organizational commitment, and turnover intention. Method: The subjects were 468 nurses and 19 head nurses who were working at the 3 general hospitals in seoul. The data were collected from July 6 to September 14, 2001 by the structured questionnaires. For data analysis, descriptive statistics, ANOVA, Pearson correlation coefficient, and stepwise multiple regression with SAS package were used. Result: 1) The score of the nurse managers' transformational leadership perceived by surbodinates' were higher than that of the nurse managers' transactional leadership. Among 5 subdimensions of the leadership styles perceived by surbodinates', the scores of 'charisma' and 'intellectual stimulation' were highest and 'management by exception' were lowest. 2) 'Charisma', 'intellectual stimulation', 'individual consideration' and 'contingent reward' were positively related to all of variables except 'turnover intention'. 'Management by exception' was negatively related to all of variables and was positively related to 'turnover intention'. 3) 'Job satisfaction' was positively related to 'organizational commitment' and 'Job satisfaction', 'organizational commitment' were negatively related to 'turnover intention'. 4) As a result of stepwise multiple regression analysis, the key determinants of 'turnover intention' were 'organizational commitment' and this explained 44.4% of the total variance of it.

• Journal of Korean Academy of Nursing
• /
• v.28 no.3
• /
• pp.583-590
• /
• 1998

This study was undertaken in order to examine the effect of hardiness on stress-causing factors, defined in this study as burnout in nursing. The subjects were 248 nurses working in three general hospitals in Taejon. The instruments used for this study were a survey of general characteristics, modified Health-Related Hardiness Scale(HRHS) (25 items), job stress scale (63 items), and burnout scale (20 items). Analysis of data was done through the mean, percentage, Pearson correlation coefficient, and stepwise multiple regression done with a SAS program. The results of this study are as follows. 1) The average item score for the job stress was high at 4.44. In the subcategories, the highest degree of stress was night duty(5.11), and work overload(4.70), responsibility for extra affairs(4.70), conflict in nurse-doctor relationships(4.69), and low reward(4.63) in that order. 2) In the stepwise multiple regression analysis, hardiness(11.55%) was a significant determinant of burnout along with job stress(17.24%) and job duration(12.94%). The results of this study show that hardiness has an effect on psychological distress caused by stress.

• Journal of Korean Academy of Nursing Administration
• /
• v.21 no.4
• /
• pp.447-456
• /
• 2015

Purpose: The purpose of the study was to identify factors affecting the innovative behavior of general hospital professional staff. Methods: In the final analysis, the study focuses on the 442 structured questionnaires received from the professional staff (doctors, nurses, medical technicians, and administrative staff) of H Hospital, a public medical foundation. Data were collected from August 1 to 31, 2014. The SPSS/WIN 19.0 program was used for data analysis which included t-test, ANOVA, $Scheff\acute{e}$ test, Pearson correlation coefficients, and multiple regression analysis. Results: Multiple regression showed that factors affecting innovative behavior of hospital professional staff were conditional reward, innovation-oriented culture, education, and job (Adj $R^2=.317$). Conclusion: The results of this study suggest that it is necessary for the leader to demonstrate leadership with innovation and transaction in harmony to cultivate innovative behavior in hospital staff. Also, positive support and role in the hospital organization are fundamental to developing the strengths that each type of culture possess on the basis of the organizational culture of hospital, enabling hospital staff to exhibit their best voluntary innovative behavior.

• Korean Journal of Occupational Health Nursing
• /
• v.28 no.3
• /
• pp.166-175
• /
• 2019

Purpose: The purpose of the study was to identify factors affecting the innovative behavior of military hospital personnel. Methods: The study involved the analysis of 146 structured questionnaires received from military hospital personnel in D city and S city. Data were collected from January 10 to February 9, 2019. The SPSS/WIN 24.0 program was used for data analysis, which included the t-test, ANOVA, $Scheff{\acute{e}}$ test, Pearson's correlation coefficient, and multiple regression analysis. Results: The multiple regression analysis showed that factors affecting innovative behavior of military hospital staff were the natural reward strategies of self-leadership, behavior-focused strategies of self-leadership, and organization-based psychological ownership ($R^2=.30$). Conclusion: The results suggest that to promote innovative behavior in military hospital staff, it is necessary to implement strategies that inspire self-leadership and psychological ownership.

• Journal of Korean Society of Industrial and Systems Engineering
• /
• v.39 no.3
• /
• pp.100-108
• /
• 2016

The purpose of this study is to present a business strategy plan to increase organizational effectiveness of small and medium-sized enterprises. The research investigated in the level of human resource activity, such as recruitment, education, evaluation, compensation and development for the employees and executives who are working at small and medium-sized enterprises where located in Busan and Gyongnam province. With this, the research carried out actual proof analysis on the level of human resource activity effects on organization effectiveness like job satisfaction and organizational commitment. The following implications can be acquired from the result of multiple regression analysis on the 201 employees of small and medium enterprises. First, small and medium-sized enterprises should carry out human resource management activities and improve research and development capacity to enhance organization effectiveness. Second, in order to improve job satisfaction of the members of small and medium-sized enterprises, the management should concentrate on recruitment activity and reward maintenance management activity and come up with strategies to enhance learning ability and external network ability. Third, in order to enhance organizational commitment of the members of small and medium-sized enterprises, recruitment activity, training activity, and reward maintenance management activity should be carried out and the management should come up with strategies to enhance learning ability and external network ability. In this research, the objective was only to find out antecedents of organization effectiveness, but considering that causality might arise among the antecedents, in the studies hereafter, the verification on the structural relationship of various factors will be needed.

• Korean Journal of Occupational Health Nursing
• /
• v.25 no.1
• /
• pp.55-64
• /
• 2016

Purpose: The aim of this study was to investigate the association between job stress and metabolic syndrome among male workers. Methods: A total of 396 male workers employed in an electronic company, located in 'P' city, Gyeonggi Province, who had taken medical examination at the 'D' hospital, volunteered in this study. All the data used in this study were obtained from 'D' hospital after getting consent and permission from the workers. General and occupational characteristics, medical history, and health-related behaviors of the subjects were obtained by self-administered questionnaire. Results: The highest occupational stress by sub-sector was reported in the order of insufficient job control, organizational system, lack of reward, job demand, job insecurity, physical environment, job culture, and relationship conflict. The prevalence rate of metabolic syndrome of the participants was 19.9%. The results of the multiple logistic regression analysis on metabolic syndrome of the subjects indicated that the syndrome was significantly higher among those with family history, smoking habit and ex-smoking, working duration of 3 years and over, and with higher total score of occupational stress. It was significantly more prevalent, when the degree of stress was high in the sub-sectors of occupational stress; job autonomy, job insecurity, lack of reward, and job culture. Conclusion: In conclusion, it is necessary to implement a plan to efficiently manage the job stress of these male workers, as the probability of metabolic syndrome increased with the increase of occupational stress. Furthermore, considering the highest occupational stress was found to be job autonomy among its sub-sectors, it is necessary to prepare various measures to enhance the autonomy of such employees.

• Journal of Korean Academy of Nursing
• /
• v.37 no.6
• /
• pp.872-882
• /
• 2007

Purpose: This study aimed at exploring relationships among Internet addiction, smoking, and drinking and examining the effect factors on Internet addiction, smoking and drinking. Methods: By using stratified sampling, 1,529 participants representing high school students in the Kangwon province were selected. Data was analyzed by SPSS 12.0. using ${\chi}^2$, Pearson correlation coefficient and multiple regression. Results: One-fifth of the total participants were at the mild or moderate stage of Internet addiction. Regarding smoking, 22.7% of male subjects and 4.5% of female subjects were current smokers. Regarding drinking, the percentages of subjects who drank alcohol once or twice per month were 53.5% of male students and 40.7% of female students. Internet addiction positively correlated with depression, novelty seeking, harm avoidance and reward dependence, Internet addiction negatively correlated with persistence, self-directness, cooperativeness, and self-transcendence. Significant factors affecting Internet addiction were depression, gender, novelty seeking, and self-transcendence. Important factors influencing smoking were drinking, gender, school type, satisfaction with school, novelty seeking, and reward dependence. Significant factors affecting drinking were smoking, novelty seeking, school type and ages. Conclusion: This study shows the necessity of developing and implementing effective intervention programs in order to prevent adolescents from experiencing Internet addiction and health risk behaviors.

• Culinary science and hospitality research
• /
• v.23 no.2
• /
• pp.146-158
• /
• 2017

This study conducted a survey to investigate career decision-making self-efficacy, and career preparation behavior related to self-leadership among students major in culinary area. Frequency analysis, factor analysis, reliability analysis and multiple regression analysis were employed using SPSS 16.0 Version statistical package program, and various results were discovered. First, all the subfactors of self-leadership factors (behavior focused, natural reward, and constructive thought strategy) had a positive effect on career decision-making self-efficacy factors (occupational information, goal setting, career planning, problem solving, self-appraisal). Second, all the factors of self-leadership factors (behavior focused, natural reward and constructive thought strategy) had a positive effect on career preparation (information search activity, goal achievement activity). As a result, the study confirmed that strengthening of self-leadership for culinary major college/university students is important predictor for development with career decision-making self-efficacy and career preparation behavior.