• The Journal of the Convergence on Culture Technology
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• v.10 no.3
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• pp.405-411
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• 2024

The purpose of this study was to examine the mediating effect of social support on the relationship between the use of digital devices and successful aging among the elderly. For this study, the data were collected from 363 elderly over the age of 65 years who were registered in the Senior Welfare Center located in D city and K city and data were analyzed using SPSS 22.0 and PROCESS Macro v3.5 Program. The results of the study showed that the use of digital devices of the elderly was positively related to social support and successful aging. Moreover, the use of digital devices and social support were statistically significant variables in explaining the variance of successful aging among the elderly. In addition, social support had a significantly mediating effect on the relationship between the use of digital devices and successful aging among the elderly. Finally, based on the findings, the implication for the improving successful aging among the elderly considering promoting the use of digital devices and social support and the recommendations for the further research were provided.

• Elastomers and Composites
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• v.47 no.1
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• pp.9-17
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• 2012

Herein, life time prediction based on the deterioration of physical properties of chloroprene rubber (CR)aged by heat and seawater was performed. CR samples were experienced an accelerated test at $80^{\circ}C$, $100^{\circ}C$, $120^{\circ}C$ for heat aging, and $40^{\circ}C$, $60^{\circ}C$, $80^{\circ}C$ for seawater aging for 20,000 hrs. The change in tensile strength, maximum elongation,hardness was measured. As a result, the decrease in elongation was a major factor causing failure. The life time estimated using an Arrhenius model was 125 years at $23^{\circ}C$ for thermal aging and 9 years at $23^{\circ}C$ for seawater aging. SEM and elemental analysis reveal that cracks were generated and the content of oxygen was increased for CR agined by seawater. FT-IR spectrum shows the new C-O and C = O bonds were generated by the chemical reaction with seawater. Also, the glass transtion temperature was increased and the thermal decomposition was decreased by seawater aging.

• Journal of the Korean Society of Food Science and Nutrition
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• v.41 no.4
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• pp.533-538
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• 2012

The retrogradation properties of a Korean rice cake ($Karedduk$) added with oligosaccharides after 0~30 hr of storage at $5^{\circ}C$ were examined by texture profile analysis and the Avrami equation using textural characteristics. Oligosaccharides, such as galactooligosaccharide (50%) and maltooligosaccharide, were added to dry rice flour at levels of 10%. In the amylogram, the breakdown (P-H) and consistency (C-H) of the Korean rice cake (Karedduk) added with oligosaccharides were lower than those of the control. Texture profile analysis using a Texture Analyzer revealed that the hardness of the Korean rice cake ($Karedduk$) added with oligosaccharides was lower than the control. The Avrami exponent ($n$) for the control, galactooligosaccharide (50%) 10% and maltooligosaccharide 10% addition was 2.415, 2.771 and 2.683, respectively. The time constant (1/$k$) for galactooligosaccharide (50%) 10% or maltooligosaccharide 10% addition was higher than the control. Overall, adding galactooligosaccharide (50%) 10% or maltooligosaccharide 10% to a Korean rice cake ($Karedduk$) is effective in retarding retrogradation.

• Proceedings of the KIEE Conference
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• 2006.07c
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• pp.1507-1508
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• 2006

XLPE 절연 전력케이블의 제조과정에서 발생하는 가교부산물을 제거할 목적으로 14주기노화를 실시하며, XLPE 절연체에 발생하는 수트리를 가속 발생 성장시킬 목적으로 가속수트리 열화를 실시한다. 22.9kV 트리억제형(TR CNCV-W) 케이블에 대하여 14주기노화 전과 후, 120, 240, 360일 가속수트리(AWTT) 후의 파괴전압을 분석하였다. 14주기노화는 상승효과와 감소효과가 비슷하게 작용하는 것으로 나타났으며, 240일 AWTT 이후에 노화가 가속되는 것으로 나타났다.

• The Journal of the Korea Contents Association
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• v.19 no.10
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• pp.69-83
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• 2019

Considering the reality that the baby boom generation which takes up 15% of the Korean population enters the old age, this study aimed to investigate level and factors affecting successful aging of the baby boom generation. The theory this study used is Rowe & Kahn, and the data it used are from 2,577 persons combining respondents of the fifth basic survey and the special survey of Korean Longitudinal Study of Ageing. This study utilized IBM SPSS Statistics ver. 20.0 for analysis, and the main results of this study were as follows. First, successful aging level of the baby boom generation was $6.36{\pm}1.39$(range: 0~9), proving that they consider their aging as successful. However, depending on sub-factors of successful aging, proportion that they viewed themselves as successfully aging were quite different. Second, examination of factors affecting successful aging of the generation found out that pocket money, educational level, and child-parents relationship satisfaction are important. By applying the theory of Rowe & Kahn which can be called the representative model of successful aging, this study examined successful aging and extracted some suggestions for future researches.

• Journal of Life Science
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• v.28 no.12
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• pp.1523-1528
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• 2018

This study investigated the chemical composition of four Korean cultivated Chrysanthemum indicum L. (Gamguk 1 ho, Gamguk 2 ho, Gamguk 3 ho, and Wonhyang) which are used in the food and fragrance industries to identify their volatile flavor compounds. These compounds were analyzed using headspace GC-MS from plant samples cultivated in the same region of Korea (Sancheong-gun, Gyeongsangnam-do). A total of 23 compounds were identified, eight of which were common across the four cultivars. The major flavor components in the three Gamguk plants were identified as 3-carene, camphene, ${\beta}$-phellandrene, eucalyptol and (+)-camphor. Eleven compounds, including (+)-camphor at 31.40%, were identified in Gamguk 1 ho. Gamguk 2 ho was found to contain 12 flavor compounds, predominant of which was camphene at 25.60%. Thirteen compounds including (+)-camphor (26.88%) were identified in Gamguk 3 ho, while 17 were detected in the Wonhyang cultivar, including trans-piperitol (47.33%), sabinene, and ${\gamma}$-terpinyl acetate. These results indicate differences in the type and ratio of functional volatile flavor ingredients in Chrysanthemum indicum L. cultivars which is highly valuable as material for fragrance product development.

• Journal of the Korean Society of Propulsion Engineers
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• v.24 no.2
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• pp.1-13
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• 2020

The characterization of aging of the pyrotechnic device is conducted thermally, chemically, and spectroscopically. The device is comprised of two parts: (i) igniter composed of Zr and (ii) pyrotechnic delay composed of ZrNi alloy. The thermally induced chemical reaction is identified through Differential Scanning Calorimetry (DSC) and Thermogravimetry Analysis (TGA). The peak deconvolution of the themo-chemical data is used to estimate the enthalpy change of each metallic fuel component. Laser Induced Breakdown Spectroscopy (LIBS) and X-ray Photoelectron Spectroscopy (XPS) are used for chemical species analysis. The decomposition of oxidants by moisture significantly affected the fuel aging, and the formation of oxide film and metal oxide on the fuel surface gave rise to the thermal energy decrease.

• Journal of Industrial Convergence
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• v.18 no.1
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• pp.87-96
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• 2020

The purpose of this study was to examine the dual mediating effects of growth mindset and hope between body image and successful aging of the elderly. For this purpose, we surveyed 422 elderly people in D and S city of Chungcheongnam-do, and D metropolitan city. Collected data were analysed using SPSS 25.0 and PROCESS macro 3.4 program. Frequency analysis, reliability analysis and dual mediating effect analysis by using bootstrap were performed. The results of the study are as follows. First, as a result of correlation analysis there was a statistically significant positive correlation between variables. Second, as a result of path analysis, body image had a positive effect on growth mindset and hope, growth mindset had a positive effect on hope and successful aging, and hope also had a significant effect on successful aging. Third, as a result of dual mediation effect analysis, growth mindset and hope mediated in the relationship between body image and successful aging. This study provided new models and basic data by using body image, growth mindset and hope for successful aging of the elderly.

• 한국노년학
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• v.39 no.3
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• pp.589-612
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• 2019

Korea has undergone rapid modernization and globalization process in the last few decades. The purpose of this study is to explore how shifting traditional values are impacting Korean elderlies and their perceptions of aging experience. In order to understand how changing social and cultural practices are affecting older adults, the similarities and differences among Korean elderlies living in three different geographical locations are examined in a multidimensional comparative framework. Life story interviews were conducted with 30 Korean elderlies (10 urban residents in Korea, 10 rural residents in Korea, and 10 residents in the US). Paying attention to within-group variation, this study particularly focused on analyzing the psychological, social, emotional, and spiritual experiences that made lives meaningful and resilient in old age in spite of physical decline. Based on analysis of narrative, the following major areas were identified as having positive or negative influence on aging experiences: physical health, emotional health, family relationship, work, leisure/social activity, and spirituality. Common themes of aging well across all settings included: "life not indebted to their offspring," "physical and mental health," and "dying well." Spirituality played a critical role in cultivating perspectives on life and accepting aging process, which were rooted in specific religious traditions participants identified (e.g., Christianity or Buddhism). Interesting differences in the meaning of work and leisure were also found between elderlies residing in Korea and the US immigrant context. One unique factor continuing to negatively affect Korean elderly in rural community was related to shame of not obtaining higher education. Implications for future research are also addressed.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.7
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• pp.3275-3283
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• 2013

Purpose: This study is to verify and analyze the influencing factors of successful aging with social support, self-efficacy, community environment and subjective health status on middle and old aged men. Methods: The survey was performed to the men between the ages of 50 and 79 in Seoul and Kyunggi province, Korea. 144 questionnaires were collected and analyzed by SPSS 18.0 program. Stepwise multiple regression was used to identify significant predictors of successful aging. Results: The most influencing factor for successful aging was social support, the second was self-efficacy, the third and the fourth was community environment and subjective health status. This regression model explained 56.7% of the variance in successful aging. Conclusion: The result shows that these variables should be considered in intervention and program of successful aging for middle and old aged men. It can be an important consideration in enhancing promoting care and welfare for the successful aging.