• ETRI Journal
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• v.42 no.5
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• pp.700-711
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• 2020

Because of the rapid increase of mobile traffic, flexible broadband supportive unmanned aerial vehicle (UAV)-based 6G mobile networks using free space optical (FSO) links have been recently proposed. Considering the advancements made in UAVs, big data processing, and artificial intelligence precision control technologies, the formation of an additional wireless network based on UAV aerial platforms to assist the existing fixed base stations of the mobile radio access network is considered a highly viable option in the near future. In this paper, a combined time bound optimization scheme is proposed that can adaptively satisfy the control and communication time constraints as well as the processing time constraints in FSO-based 6G UAV aerial networks. The proposed scheme controls the relation between the number of data flows, input data rate, number of worker nodes considering the time bounds, and the errors that occur during communication and data processing. The simulation results show that the proposed scheme is very effective in satisfying the time constraints for UAV control and radio access network services, even when errors in communication and data processing may occur.

• Journal of Korean Academy of Nursing
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• v.33 no.4
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• pp.495-502
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• 2003

Purpose. This ethnography is aimed at describing the care-giving practices of the nuclear family and relatives of the elderly within a clan village in relation to their socio-cultural context. Four basic notions of the study came from Leininger's culture care theory and the nurse-client negotiation model of Anderson. In order to understand the cultural system of caring, the following questions were explored: What caring behaviors are performed for the elderly person in a clan and how do these behavior relate to the various components of that particular culture\ulcorner Method. Data for this study was gathered through twenty-one fieldwork expeditions between September 1994 and December 2002 using interviews and participant observation of 7 families drown from two extended families. Data was analyzed using the techniques of taxonomy, value, and proxemics analysis. Findings. The socio-cultural context of caring for elderly people, their caring values, and four categories of caring were explored. Values of caring and every day life in the clan were hierarchical, reciprocal, and collective. The four categories of caring were: being with, empowering, keeping territory, and enhancing spirituality. Conclusions. The results of this study can be used to understand culture-specific care and to provide culturally congruent care for the elderly in a clinical setting.

• International Journal of Advanced Culture Technology
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• v.8 no.2
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• pp.184-191
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• 2020

This study is conducted to find out the nurses' character for care and the workplace bullying for the early stage nurses working in the clinical field and their relation in order to understand the factors which would affect the consequence of the workplace bullying. Data collected from 131 early stage nurses working at one general hospital for 7 months was used for this study. The data was analyzed with descriptive statistics, Independent t-test, one-way ANOVA, Pearson's correlation coefficient, Hierarchical multiple regression by using SPSS/WIN 21.0. It was found that high the nurses' character for care was related to the lower workplace bullying (type and consequence) (r=-.31, p<.001; r=-.26, p=.003) and that the worse the score in the type of bullying wasthe higher consequence (r=.54, p<.001). The multiple regression analysis showed that the factors affecting the consequence of the workplace bullying were the type of bullying (β=.48), dissatisfaction with nursing (β=.22), and moderate satisfaction with nursing (β=.19) and that the explanation of the model by variables was 32.5%. Based on the results of the study, it is suggested that the effort of lowering the occurrence of the type of bullying and the strategy of enhancing the satisfaction with nursing such as improvement in the quality of nursing education be made in order to improve the consequence of workplace bullying at the workplace for the early stage nurses.

• Korean Journal of Occupational Health Nursing
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• v.20 no.3
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• pp.289-298
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• 2011

Purpose: The purpose of this study was to explore status of activity of daily living, interpersonal relationship, depression and health-related quality of life in patients with traumatic hand injury and identify factors that influence health-related quality of life. Methods: The participants were 104 outpatients with impending hand microsurgery from D city. The data were analyed using Pearson's correlation, t-test, ANOVA, and hierarchical regression with SPSS/WIN 12.0. Results: There were statistically significant differences in HRQoL to gender, age, marital state, and level of pain. HRQoL had significant correlations with ADL, IADL, relationship change, and depression. In regression analysis, depression, marital state, ADL, and level of pain explained 48% of the HRQoL. Conclusion: Findings of this study allow a comprehensive understanding of patients with traumatic hand injury. It is necessary to develop nursing intervention program for improving the health-related quality of life in patients with traumatic hand injury by considering psychological care for depression as well as physical care.

• Korean Journal of Social Welfare
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• v.58 no.3
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• pp.5-26
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• 2006

This study intended to analyze what factors affect fundraising effectiveness in nonprofit social service organizations. Focusing on organizational characteristics only, current studies did not address the importance of organizational capacity leading to organizational effectiveness. Based on the assumption of the relation between organizational capacity and effectiveness of nonprofit organizations, this study added factors indicating organizational capacity to the current model. After collecting data from 147 staffs involving in fundraising activities of nonprofit social service organizations, this study used a hierarchical regression analysis. The results showed that organizational capacity had a significant impact on the variance of fundraising effectiveness. Despite the limitations of the purposive sampling method, this study has implications to provide practical guideline for nonprofit managers and to develop a theoretical framework with a new perspective on organizational capacity.

• Journal of Home Health Care Nursing
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• v.24 no.2
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• pp.160-168
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• 2017

Purpose: Optimism is an important psychological variable that functions positively in stress adaptation process. The purpose of this study was to identify either a mediating or moderating effect of optimism in the relationship between stress and well-being among mothers of children with diabetes mellitus. Methods: A sample of 109 mothers of children with diabetes mellitus was recruited in a tertiary hospital in B city and they completed self-reported questionnaires. Multiple regression analysis models were used to test the mediating and moderating effects of optimism in the relationship between stress and well-being. Results: The results of the multiple and hierarchical regression analysis showed that the role of optimism was examined a partial mediator of the relation between stress and well-being, not a moderator. Increased stress was associated with decreasing optimism and well-being, and increased optimism predicted increased well-being among mothers of children with diabetes mellitus. Conclusion: Optimism is more likely to play a role as mediator, rather than as a moderator. This finding suggests the importance of optimism in improving the well-being of mothers of children with diabetes mellitus.

• Human Ecology Research
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• v.53 no.6
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• pp.629-640
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• 2015

This study examined the effect of interparental conflict and parent-child conflict on overt aggression in upper elementary school students and investigates if children's father-child conflict or mother-child conflict mediated the effect of interparental conflict on overt aggression. The participants of this study were 532 of fifth to sixth graders from three elementary schools located in Seoul and Gyeong-gi province. Participants were asked to respond to a written questionnaire to measure research variables of the Peer Conflict Scale, the Conflict Tactics Scales, and the Conflict Behavior Questionnaire. Data were analyzed by descriptive statistics and hierarchical multiple regression. Mediating effects were examined using analysis procedures of Baron and Kenny. The major findings were as follows: first, the level of interparental conflict and parent-child conflict of both mothers and fathers in upper elementary school students increased the level of overt aggression. Second, parent-child conflict of both mothers and fathers in upper elementary school students partially mediated the relation between interparental conflict and overt aggression. Higher levels of interparental conflict resulted in higher levels of parent-child conflict, and the subsequently higher frequency of overt aggression in upper elementary school students.

• Journal of the Korean Society of Safety
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• v.28 no.1
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• pp.102-108
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• 2013

This study aimed to examine the impact of workers' perceptions of the safety climate on job satisfaction and intention to turnover in the manufacturing industry. Data was collected from employees(n=143) working in the manufacturing industry. The perceived safety climate included perceptions of the safety commitment of the management, safety leadership of the immediate supervisor, and safety policy. Hierarchical regressions were conducted to identify the significance of the relation between the sub-variable of the perceived safety climate and job satisfaction, and intention to turnover. The results show that safety commitment and safety policy are significant predictors of job satisfaction. The immediate supervisor's safety leadership was significantly correlated with intention to turnover. These results indicated that the perceived safety climate of workers in the manufacturing industry might influence job satisfaction and intention to turnover. Therefore, organizations in the manufacturing industry should focus on improving safety climates to enhance job satisfaction and prevent employee turnover.

• The Korean Journal of Health Service Management
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• v.13 no.4
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• pp.179-190
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• 2019

Objectives: This study aimed to investigate the mediating effects of health promotion behaviors on the correlation between self-perceived health and medical care utilization among older adults. Methods: This study used data from a. Data were analyzed with frequency analysis, descriptive statistics, Pearson's correlation coefficient, and hierarchical multiple regression. Mediation analysis was performed according to the Sobel test. Results: The self-perceived health and some health promotion behaviors in older adults had a statistically significant effect on medical care utilization. Only the nutritional management of health promotion behaviors had a mediating effect on the relation between the self-perceived health and medical care utilization of older adults. Conclusions: The nutritional management of older adults was confirmed as an important factor to health promotion and prevention. This study was meaningful in that it identified the political directions for establishing health care policy for the older adults.

• Human Ecology Research
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• v.57 no.3
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• pp.419-430
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• 2019

This study examined the influences of middle school students' affective empathy and guilt-proneness on defending behavior against bullying and investigated if class climate (teacher support and student support) had moderating effects. The participants consisted of 163 second to third grade students (77 boys and 86 girls) in Seoul and Gyeonggi-do. The data were analyzed with descriptive statistics, Pearson's correlation, and hierarchical regression. Moderating effects were examined using multiple regression analysis. The results of this study indicated that guilt-proneness, teacher support, and student support had significant effects on the defending behavior of middle school students. The higher the level of guilt-proneness, the higher the level of defending behavior. Defending behavior was also higher when students perceived a belongingness to a classroom where their teacher and students provided support. However, affective empathy had no effect on defending behavior. Second, teacher support moderated the relation between guilt-proneness and defending behavior. The effects of guilt-proneness on defending behavior against bullying were greater when teacher support was high compared to low. The results suggested that guilt-proneness and classroom climate play important roles in increasing defending behavior in middle school students. Some implications for future research were also discussed.