• Journal of the Korean Geotechnical Society
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• v.35 no.11
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• pp.25-36
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• 2019

The safety barrier is installed on road embankment to prevent vehicles from falling into road side slope. Among the safety barrier, flexible guardrails are usually installed. The flexible guardrail generally consists of a protection cross-beam and supporting in-line piles. These guardrail piles are installed nearby slope edge of road embankment because the side area of the road is much narrow. The protection cross-beam absorbs impact energy caused by vehicle collision. The pile-soil interaction also absorbs the rest of the impact energy and then, finally, the flexible guardrail system resists the impact load. This paper aims to investigate the pile-soil interaction subjected to impact load using centrifuge model tests. In this study, a single pile was installed in compacted residual soil and loaded under lateral impact load. An impact loading system was designed and developed available on centrifuge tests. Using this loading system, a parametric study was performed and the parameters include types of loading and ground. Finally, the ultimate bearing capacity of supporting pile under impact load was analyzed using load-displacement curve and soil reaction pressure distributions at ultimate were evaluated and compared with previous studies.

• The Journal of the Korea Contents Association
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• v.17 no.6
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• pp.351-361
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• 2017

In Korea, as the elderly population increases, elderly medical facilities and nursing care workers are increasing in labor force, but nursing care workers are avoiding nursing care workers due to poor working conditions and many physical and mental exhaustion of nursing care workers. Therefore, in this study, 284 nursing care workers were surveyed to search resources and to find alternatives to enhance the quality of life of caregivers. The result of research, The first, effected positively on the quality of life in environmental and social on a married women. The more a religion, effected positively on the quality of life in environmental and social, psychological. The higher the salary, effected positively on the quality of life in environmental and social, physical. The second, the support of a Superior effected positively on the quality of life in environmental and physical and the support of a colleague effected positively on the quality of life in social and physical. The third, the support of a Superior moderated by self-efficacy of the quality of life in the social and psychological. This results suggest that can be influential variables the support of social and the self-efficacy as an alternative to burnout of the care workers.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.11
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• pp.335-347
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• 2019

This study was undertaken to investigate the relationship between social support and depression of the elderly in care facilities. We enrolled 328 elderly people aged 65 years or older, admitted to 15 care facilities located in D metropolitan city. Data were collected through personal interviews conducted by interviewers who visited each care facility, from March 1 to May 31, 2018. Our results indicate a significantly higher distribution of depression in the group having lower social support; the score of depression was determined to be in a significant positive correlation with social support. Considering logistic regression, the adjusted odds ratio in the depressed group increased significantly by 2.7 times in the high group (Q3), 5.4 times in the middle group (Q2) and 10.1 times in the low group (Q1), which had the very high group of social support score. Multiple regression analysis revealed that the factors influencing depression include religion status, relationship with children, subjective health status, physical disabilities, smoking status, breakfast status, and social support, and the explanation power of the injected variables is 41.1%. Taken together, our findings indicate that the level of depression amongst the elderly in care facilities is significantly related to the social support available.

• The Journal of the Korea Contents Association
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• v.20 no.8
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• pp.618-627
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• 2020

As the issues of activity confidency of the adolescent gaining more attention these days, the researcher intends to examine the structural relationships between the activity confidency of the adolescent, their career Decision Self-efficacy, and the parental career support. For this study, 437 high school students from high schools located in the cities of Cheonan and Sejong were interviewed using questionnaires. The data from the survey were analyzed using SPSS 23.0 and AMOS 23.0. The outcomes of this study were as follows; First, the activity competency of high school students had a positive impact on career support from both parents. Second, the career support from both parents turned out to have a significant effect on the career decision self-efficacy of high school students. Third, the activity confidency of high school students had a significant impact on the career decision self-efficacy of them. Fourth, it was shown that parental career support had a mediating effect on the relationship between the activity confidency of high school students and their career decision self-efficacy. This study implies that a new issue has been raised in the perspective that the activity confidency of the adolescent is related to the career decision self-efficacy, which is one of the biggest concerns of them.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.10
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• pp.444-455
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• 2018

This empirical study examined the relationships among emotional labor, social support, and organizational commitment of franchise food service industry employees, and analyzed the mediating effects of social support from the fellow and director on the relationship between emotional labor and organizational commitment. A total of 268 employees in the franchise food service industry, such as fast food, chicken, and coffee in Seoul, were analyzed by frequency analysis, reliability analysis, correlation analysis, confirmatory factor analysis, and structural equation model analysis using the SPSS Program. The results of verifying the research hypotheses could be summarized as follows. First, the surface emotional labor of franchise food service industry employees had negative effects on the organizational commitment. Deep emotional labor had significant positive effects on the organizational commitment, and fellow and director support had significant positive effects on the organizational commitment. Second, the social support from the fellow and director had partially mediating effects on the relationship between emotional labor and organizational commitment. This suggests that emotional labor and social support play essential roles in enhancing the organizational commitment of franchise food service industry employees.

• The Journal of the Korea Contents Association
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• v.13 no.3
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• pp.229-239
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• 2013

The purpose of this study was to examine the influential factors for the quality of life of 151 dental hygienists. Average score were job stress $2.84{\pm}0.60$, social support $3.97{\pm}0.52$ and quality of life $3.18{\pm}0.35$ In terms of the quality of life, there were significant gaps according to age, marital status, the type of workplace, education and economic status. In social support significant difference were found according to age, the type of workplace and work system. In job stress, economic status made significant differences to that. Among the sub-factors of the quality of life, the dental hygienists who worked in public dental clinics led a life of higher quality than those who worked in hospitals in terms of physical and psychological health. In terms of social relationships, the dental hygienists who received graduate-school education led a life of better quality than the college graduates. In terms of environments, the 30-34 age group led a life of better quality than the 25-29 age group, and those who worked in public dental clinics led a life of better quality than the others. Those who received graduate-school education led a life of better quality than the junior-college graduates and the college graduates, and the group whose annual income was between 30 and 39 million won led a life of higher quality than the others. In terms of the overall quality of life, the group that worked for five days a week was ahead of the other that worked for five days a week. As a result of analyzing what factors affected the quality of life, emotional support, material support were identified as the variables to have a significant impact on that.

• The Journal of the Korea Contents Association
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• v.18 no.7
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• pp.194-206
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• 2018

The purpose of this research is to take a look at the factors that influence the successful aging of the elderly with disability as the aging population grows. For this purpose, psychological and social concepts were defined for successful aging of the elderly with disability. It was also verified that the effects of emotional & social preparation for aging on successful aging of the elderly with disability and mediating effects of social support. The subjects of this study are 506 elderly people with disability who are over the age of 50. They were originally extracted from the 4th main survey and 3rd, 4th additional survey of Korean Retirement and Income Study. For data analysis purposes, SPSS 23.0 and SPSS PROCESS macro v2.16 were used. The results of this study are as followed. Firstly, emotional & social preparation for aging turned out to have a significant direct influence on successful aging the elderly with disability. Secondly, emotional & social preparation for aging has a indirect effect on successful aging through social support. On the basis of the results, this study provided the social welfare policy and practical suggestions to enhance the preparation for aging and social support.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2018.05a
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• pp.580-583
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• 2018

Purpose: The purpose of this study was to compare the effects of ankle balance training on unstable and stable surfaces to discover on which surface the proprioception, balance and muscle strength of obese middle aged women improves more. Method: 30 obese middle-aged women were randomly recruited and divided into two groups (training on an unstable surface, training on a stable surface). The subjects in each group participated in the training for six weeks, three times per week for 30 minutes each session. Proprioception was measured using Dualer IQ digital inclinometer; sway length (SL) and sway area (SA) of center of pressure, and limit of stability (LOS) were measured for balance; muscle strength before and after the training was measured using manual muscle testing. Results: There were significant improvements in the subscales of the proprioception, balance and muscle strength in those who participated in ankle balance training on the unstable surface, and in those who participated on the stable surface. Therefore, the training of participants on unstable and stable surfaces did not identify which ankle balance training technique was more effective. Conclusion: Unstable and stable surface ankle balance training are both effective in improving the proprioception, balance and muscle strength of obese middle-aged woman.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.12
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• pp.301-306
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• 2016

In bridge performance assessments, a new load carrying capacity evaluation model of simple bridges was proposed, which is based on the developed simple support impact factor spectrum. In this paper, a conservative assumption that the inner span with the both ends fixed boundary condition is ideal for applying the impact factor response spectrum for continuous bridges. The impact factor response spectrum has been proposed based on this assumption. The response spectrum by comparing the numerical analysis result and actual measurement data verified the applicability. The analysis was loading the moving load of DB-24 in a six-span continuous bridge, which was the same as the actual measurement data, the dynamic response was measured in the fourth span. The frequency of the bridge was obtained by FFT on the acceleration response and the span-frequency of sample bridge was calculated by the frequency. The impact factor of the sample bridge was determined by applying the span-frequency of the bridge to the proposed response spectrum; it was similar to the result of comparing the actual measured impact factor. Therefore, the method using the impact factor response spectrum based on the frequency response of both ends-fixed beam was found to be applicable to an actual continuous bridge.

• Korean Journal of Childcare and Education
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• v.11 no.6
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• pp.59-78
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• 2015

This study aims to explore the relationship between North Korean refugee mothers' perceived home psychological characteristics and ego-resilience of their young children focusing on moderating effect of social support. For this purpose, we sampled 96 North Korean refugee mothers with 3-5 year old children. Home psychological characteristics consisting of family strength, family environment and family functioning, social support, and ego-resilience was analyzed by Pearson correlation analyses and hierarchical regression method. The results of this study were as follows. First, there is a significant correlation between North Korean refugee mothers' perceived home psychological characteristics and ego-resilience of their young children. Second, the perceived factors by North Korean refugee mothers of home psychological characteristics explained their young children's self-resilience 73.4% of the time and social support had a significant moderating effect. These results suggest that more effective social support to North Korean refugees has to be offered. Not only financial but emotional support is also needed.