• 한국노년학
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• v.31 no.3
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• pp.711-732
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• 2011

The purpose of this study is to understand the meaning and essence of aged life, which Korean elderly experience in real life and restructure them in the context of time and culture. In order to do so an in-depth interview was done with 15 elderlies over the age of 60 living in Hwaseong City, an urban-rural composite area in Gyeonggi Province where diverse elderlies could be found. In result, first, Korean elderly's understanding of aged life had physical, familial, economical, leisure, and social restoration aspects. Second, it was found that the degree of understanding about preparation for aging and preparedness is quite low. Third, as the gap between actual preparation for aging and aged life that elderly dreamed of became wider 'resentment on children', 'denial of reality', 'physical and economical change', and 'experience from prolongation of life-cycle' was found. Based on such results following suggestions could be made. First, the awareness of aged life and preparation for aging should be strengthened and there is a need for diverse educations aiming successful aged life. Second, elderly welfare policy and practical intervention with an integrated perspective based on the realm of life-cycle are demanded. Third, there is a need to strengthen the Aged Income Maintenance System for existing elder generation. Fourth, an intervention about adaptation and coping means of life event is needed. Lastly, there is a need to expand and carry out the aged life planning program for future elder generation.

• Journal of Electrical Engineering and Technology
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• v.9 no.6
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• pp.1988-1994
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• 2014

In a single-phase grid-connected power system consisting of a DC/DC converter and a DC/AC converter, the current drawn from renewable energy sources has a tendency to be pulsated and contains second-order frequency ripple components, which results in several drawback such as a power harvesting loss and a shortening of the energy source's life. This paper presents a new second-order harmonic current reduction scheme with a fast dc-link voltage loop for two-stage dc-dc-ac grid connected systems. In the frequency domain, an adequate control design is performed based on the small signal transfer function of a two-stage dc-dc-ac converter. To verify the effectiveness of proposed control algorithm, a 1 kW hardware prototype has been built and experimental results are presented.

• Journal of the Korean housing association
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• v.19 no.4
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• pp.89-96
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• 2008

The environment has played a key role to improve the living condition and develop the industry. In building industries, we should consider the environment and mitigate the environmental affect. For mitigating the its affect, various areas of building technology have been developed and applied into filed work. In addition, the process in applying into field requires to conduct the assessment of the environmental affect and improve its applied technology. A lot of assessment methods are proposed in evaluate the building condition such as post-occupancy evaluation, life cycle management and life cycle assessment. Among these assessment methods, life cycle assessment is effectively utilized the environmental affect in building life cycle. Therefore, this paper aimed at analyzing the energy consumption and $CO_2$ emission in building life cycle, using the life cycle assessment and application of the example in apartment housing. This study shows that the maintenance and the production of building materials stage shares most of the amount of energy consumption and $CO_2$ emission and therefore plays an important role to planning the building in terms of the life cycle. Second, the other stages brings about a very small amount. It is important to decide the building shape and contents to mitigate the environmental affect in terms of material, volume, the pattern of the energy use and others.

• Journal of Sport and Applied Science
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• v.2 no.1
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• pp.25-38
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• 2018

One of the largest and fastest growing segments of the tourism industry, sport tourism refers to travel to play sports, watch sports, or to visit a sport attraction including both competitive and non-competitive activities. In this respect, cycling can be considered as not only a form of physical exercise but also a form of tourism in which cycling is a usual tourism-related activity, heading to a particular destination. The purpose of this study is to examine how demographical differences of cycle tourists are related to the quality of their life. An online survey was conducted and data was analyzed using frequency, reliability, and one - way ANOVA using SPSS 22.0. First, we found that there was no significant difference on the quality of physical life based on demographical characteristics. Second, the analysis of the relationship between demographical characteristics and the quality of mental life showed that income level affects their quality of mental life. Third, the analysis of the relationship between socio demographic characteristics and the quality of social life showed that marital status affects the quality of social life. Fourth, no statistically significant difference was found between the demographical characteristics and the quality of environmental life. Further implications were discussed.

• The Korean Journal of Community Living Science
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• v.20 no.1
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• pp.71-80
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• 2009

This study aimed to identify and compare variables affecting life satisfaction of older women by focusing on household types and poverty levels. The study used data from the Korea Longitudinal Study of Aging administered by the Korea Labor Institute in 2006. The data for 1,017 older women ages over 65 including 427 single households and 590 couple households was analyzed. First, interaction effects of household types and poverty levels on life satisfaction were statistically significant. For the non-poverty households of older women, there was no explicit difference between single households and couple households in life satisfaction, but for the poverty households, single households were lower in life satisfaction than couple households. Second, as a result of reviewing four groups of older women (poverty-single household, poverty-couple household, non-poverty-single household, and non-poverty-couple household), besides religion, it was found that there were significant differences in age, education level, number of children, health level, residence area, and status of economic activity. Third, when analyzing variables affecting life satisfaction, common predictors for the four groups were health level and ownership of house. Older women who perceived to be healthier and owned their own homes were higher in life satisfaction. For poverty-single households, older women with over middle school graduation were also higher in life satisfaction, but for poverty-couple households, older women with over middle school graduation and more children were higher.

• Journal of Applied Reliability
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• v.18 no.3
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• pp.220-228
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• 2018

Purpose: The purpose of this study is to investigate the tail behavior of the life distribution which exhibits an increasing failure rate or other positive aging effects after a certain time point. Methods: We characterize the tail behavior of the life distribution with regard to certain reliability measures such as failure rate, mean residual life and reliability function and derive several stochastic properties regarding such life distributions. Also, utilizing an L-statistic and its asymptotic normality, we propose new nonparametric testing procedures which verify if the life distribution has an increasing tail failure rate. Results: We propose the IFR-Tail (Increasing Failure Rate in Tail), DMRL-Tail (Decreasing Mean Residual Life in Tail) and NBU-Tail (New Better than Used in Tail) classes, all of which represent the tail behavior of the life distribution. And we discuss some stochastic properties of these proposed classes. Also, we develop a new nonparametric test procedure for detecting the IFR-Tail class and discuss its relative efficiency to explore the power of the test. Conclusion: The results of our research could be utilized in the study of wide range of applications including the maintenance and warranty policy of the second-hand system.

• Korean Journal of Childcare and Education
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• v.14 no.1
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• pp.129-148
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• 2018

Objective: This study examined the effects of social support and resilience on life satisfaction of child care teachers. Methods: This study was conducted by sampling 162 child care teachers who participated in job training courses in the Gyeongsangbuk-do region. Three kinds of variables, which included social support, resilience, and life satisfaction were measured. The collected data were analyzed using PASW 18.0 program for windows. Results: First, social support, resilience, and life satisfaction of the child care teachers were generally above normal. The resilience subscale showed the highest score in 'affirmative', followed by 'interpersonal ability', 'self-control ability'. And the 'support of colleagues' was higher than 'support of superior' in the social support's subscale. Next, there were no significant differences in social support by child care teachers' background, but there were significant differences in resilience and life satisfaction of child care teachers' according to their working center types and academic levels. Second, life satisfaction was positively correlated with social support, and resilience. The 'affirmative', 'support of superior' variables were factors that predicted life satisfaction. Conclusion/Implications: We suggested ways to increase the life satisfaction of child care teachers through the 'affirmative' and 'support of superior' variables.

• Journal of Families and Better Life
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• v.21 no.5
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• pp.133-143
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• 2003

The main purpose of the study is to identify the perception, as well as the prejudices, of sexuality of the elderly and their sexual life. Older men and women aged 66-80 (N=17) who are married, healthy, and living in communities were interviewed regarding ADL, present and past sexual practices, prejudices on elderly sexuality, and obstacles to sexual life. The findings of this study are as follows: First, the old perceived that sexuality even in old age is an important part of life. However, they were also prejudiced about sexual intimacy in old age. Second, although an increase in age is correlated with a decrease in sexual activity, a number of older men and women continue to have active sexual life and they are satisfied with it as ever. This indicates a duality in the way the elderly perceive sexuality. Third, health status, partner's responsiveness, and environmental problems are prominent obstacles to sexual life. The study revealed that late-life sexuality must be conceived as a complex bio-psycho-social phenomenon. Consequently, it is important to hold sexual education programs for the young and the old.

• Journal of Families and Better Life
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• v.35 no.1
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• pp.71-81
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• 2017

This study examined the effects of personal values on the levels of life satisfaction among three Northeast Asian countries: Korea, China, and Japan. For this, it used data from the World Values Survey and adopted the value categories framed by Schwartz(2012). The mains findings are as follows. First, the Korean respondents showed the lowest levels of life satisfaction and the Japanese respondents showed the lowest levels of importance on each value. Second, the Korean and Chinese respondents who put more importance on the value of 'self-direction' showed higher levels of life satisfaction. Third, the Chinese and Japanese respondents who put more importance on the value of 'benevolence' showed higher levels of life satisfaction. Fourth, while the Chinese and Japanese respondents with a higher level of importance on the value of 'universalism' and 'tradition', respectively, showed higher levels of life satisfaction, the Korean respondents with a higher level of importance on the value of 'power' showed lower levels of life satisfaction. Based on the findings, it suggested the directions for future research.

• Human Ecology Research
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• v.52 no.6
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• pp.651-668
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• 2014

The main purpose of this study was to examine the relationship between social support, life satisfaction, and school-related adjustments of adolescents. The participants were 260 junior high school students (140 male and 120 female students) from the Seoul area. They completed questionnaires on social support, life satisfaction, and school-related adjustments. The collected data were analyzed using basic descriptive statistics, Pearson's correlation, and a multiple regression analysis. Baron and Kenny's method was used and examined, and the Sobel test was performed to determine the mediating model's significance. It was adapted to SPSS ver. 19.0 for Windows. The major findings were as follows: first, social support (parents/teacher/friend) was positively correlated with the adolescents' school-related adjustment. Second, the adolescents' life satisfaction was also positively correlated with the adolescents' school-related adjustments. In addition, social support was positively correlated with life satisfaction. It was further found that the adolescents' life satisfaction tended to play a perfectly/partially mediating role between social support and school-related adjustment; that is, social support (parents/teacher/friend) was shown to have not only a direct effect, but also an indirect effect through the adolescents' life satisfaction, on the school-related adjustments. These results clearly indicated that adolescents' life satisfaction plays a crucial role in the relationship between social support and the adolescents' school-related adjustments.