• Journal of Korean Dental Science
• /
• v.8 no.2
• /
• pp.49-56
• /
• 2015

Purpose: The effect of accelerated aging on color stability of various dual-cured self-adhesive resin cements were evaluated in this study. Materials and Methods: Color stability was examined using three different brands of dual-cured self-adhesive resin cements: G-CEM LinkAce (GC America), MaxCem Elite (Kerr), and PermaCem 2.0 (DMG) with the equivalent color shade. Each resin cement was filled with Teflon mold which has 6 mm diameter and 2 mm thickness. Each specimen was light cured for 20 seconds using light emitting diode (LED) light curing unit. In order to evaluate the effect of accelerated aging on color stability, color parameters (Commission Internationale de l'Eclairage, CIE $L^*$, $a^*$, $b^*$) and color differences (${\Delta}E^*$) were measured at three times: immediately, after 24 hours, and after thermocycling. The $L^*$, $a^*$, $b^*$ values were analyzed using Friedman test and ${\Delta}E^*$ values on the effect of 24 hours and accelerated aging were analyzed using t-test. These values were compared with the limit value of color difference (${\Delta}E^*=3.7$) for dental restoration. One-way ANOVA and Scheff's test (P<0.05) were performed to analyze each ${\Delta}E^*$ values between cements at each test period. Result: There was statistically significant difference in comparison of color specification ($L^*$, $a^*$, $b^*$) values after accelerated aging except $L^*$ value of G-CEM LinkAce (P<0.05). After 24 hours, color difference (${\Delta}E^*$) values were ranged from 2.47 to 3.48 and $L^*$ values decreased and $b^*$ values increased in all types of cement and MaxCem Elite had high color stability (P<0.05). After thermocycling, color change's tendency of cement was varied and color difference (${\Delta}E^*$) values were ranged from 0.82 to 2.87 and G-CEM LinkAce had high color stability (P<0.05). Conclusion: Color stability of dual-cured self-adhesive resin cements after accelerated aging was evaluated and statistically significant color changes occurred within clinically acceptable range.

• 한국노년학
• /
• v.25 no.2
• /
• pp.35-52
• /
• 2005

This study attempts to develop the scale of 'Successful Aging' for Korean elderly. It follows fives: (1)developing 105 items based on the literature reviews, (2)performing the 1st survey to confirm and reduce items, (3)verifying the content validity through the professional group and the elderly focused group, (4)performing the 2nd survey to explore the factors of 'Successful Aging' and (5)performing the 3rd survey to identify the construct validity and concurrent validity. The scale constructs four factors with 30 items. The four factors are confirmed : (1)self efficacy, (2)satisfaction with adult children's success, (3)couple life like companion, (4)self control. The reliability of this scale is 0.94 and the relationship between the items and each factor are statistically significant by the confirmatory factor analysis. Thus, the content validity is verified. Also the correlation with the successful aging and the life satisfaction is 0.69 and then the concurrent validity is verified. This 'Successful Aging Scale' for Korean elderly will contribute to use as the socio-metrics at the welfare practice for aging.

• 한국노년학
• /
• v.29 no.3
• /
• pp.899-915
• /
• 2009

The purpose of this study was examined effect of physical fitness and exercise participation on healthy aging of the elderly. The subjecrts were a total 319 people that they were participate in the regular exercise, and go to welfare center in Seoul. Data were collected during the period from November 1 to November 30, 2006. The collected data were analyzed frequency, descriptive statistics, correlation and hierarchical regression analysis using the SPSS-Win 12.0 program. The results of hierarchical regression analysis were appeared as follows. According to the results of hierarchical regression analysis, significant factors influencing healthy aging were monthly income, monthly pocket money, self-perceived health status, leg muscle strength, exercise behavior and period of exercise. 2. According to the results, significant factors influencing physiological health were age, marital status, self-perceived health status, exercise behavior and period of exercise. 3. According to the results, significant factors influencing cognitive-mental health were monthly income, monthly pocket money, self-perceived health status, leg muscle strength, exercise behavior and period of exercise. 4. According to the results, significant factors influencing social-support health were monthly income, age, education, self-perceived health status, leg muscle strength, exercise behavior and period of exercise. In conclusion, First, this questionnaire demonstrates good reliability and validity and therefore it is an appropriate measurement of healthy aging for the elderly in Korea. Second, it is important that exercise behavior is main factor to healthy aging life on the elderly. Third, There is important mean values of the items for healthy aging.

• Journal of the Korean Applied Science and Technology
• /
• v.38 no.1
• /
• pp.136-146
• /
• 2021

This study is a descriptive research to determine the degree of self-esteem, menopausal symptom, spousal support of middle-aged women and investigate the factors affecting aging anxiety. For 3 weeks from May 23 to June 13, 2020, data total of 110 people were collected using online questionnaires for late middle-aged women. As a result of date analysis, factors affecting aging anxiety in late middle-aged women were menopausal symptoms(B=17.943, p<.001), self-esteem(B=-.585, p=.001) and the explanatory power of the regression model was 41.4%. Therefore, in order to lower againg anxiety, active intervention for menopausal symptoms of late middle-aged women is required, and measures should be taken to increase self-esteem.

• Journal of Family Resource Management and Policy Review
• /
• v.13 no.3
• /
• pp.137-155
• /
• 2009

The purpose of this study is to analyze the effects of the degree of preparation for old age and perception of successful aging on the life satisfaction of middle-aged women. The participants in this study were 300 women ranging in age from 35 years to 65years who reside in Seoul, Gyeonggi-do, and other cities. Two hundred eight self-reported questionnaires were used for final analysis by SPSS WIN14. The major results of this study were as follows: First, there were differences in the degree of preparation for old age of middle-aged women by age, academic career, income, area, and religion. Second, there were differences in self-efficacy in the perception of successful aging by academic career, an income, and area. Third, there were differences in the degree of life satisfaction of middle-aged women by academic career and income. Finally, the most effective variables on the degree of life satisfaction were the degree of preparation for old age, perception of successful aging, and income. Consequently, to improve the life satisfaction of middle-aged women, social groups, local self-governments, and the government have to educate women on economic management for preparation for old age and human relationship progress programs, as well as promote healthy leisure cultures.

• Research in Community and Public Health Nursing
• /
• v.21 no.1
• /
• pp.101-109
• /
• 2010

Purpose: This study was to identify the relations among ADL, self-efficacy, physical activity and cognitive function in elders. Methods: A total of 257 subjects aged between 60 and 92 were selected through convenient sampling. Data were collected with a self-reported questionnaire from November 1 to November 30, 2008. Collected data were analyzed with SPSS/WIN 15.0. Results: Differences in ADL, self-efficacy, physical activity, and cognitive functions according to general characteristics were as follows. ADL was significantly different according to age, cohabitation, recognition on health, and successful aging. Self-efficacy was significantly different according to cohabitation, recognition on health, and successful aging. Physical activity was significantly different according to age, educational level, cohabitation, and cognition on health. Cognitive function was significantly different according to age, educational level, job, and recognition on health. The correlation coefficient (r) of the ADL variables was .565 for self-efficacy, .633 for physical activity and .460 for cognitive function. Conclusion: Findings of this study may be useful in understanding the health status of community-dwelling elders and developing more specific health promotion programs.

• Proceedings of the KIEE Conference
• /
• summer
• /
• pp.578-580
• /
• 2004

Substation facilities have become large and complex in the electric power systems. Development of condition monitoring and diagnosis techniques have been very important to improve the security of substation transformers. This paper presents a method to analyze the cause and the degree of aging of power transformers by Self organizing map(SOM). Dissolved gas data were non-linearly transformed by sigmoid function to make determination of SOM close to that of human. Potential of a failure and the degree of aging of a normal transformer are identified by using the proposed quantitative criterion. Furthermore, transformer aging is monitored by the proposed criterion for a set of transformers. To demonstrate the validity of the proposed method, a case study is performed and its results are presented.

• Journal of Home Health Care Nursing
• /
• v.26 no.3
• /
• pp.278-287
• /
• 2019

Purpose: This study aims to examine the relationship between ego resilience, family resilience, and the perception of successful aging in nursing students; additionally, specific factors relating to the perception of successful aging were identified. Methods: The participants comprised 154 nursing students. Data were collected through the administration of self-reported questionnaires. Data analysis was then performed utilizing a t-test, an ANOVA, Pearson's correlation coefficients, and a multiple regression analysis. Results: Family resilience differed significantly based on the type of residence (p=.020) (i.e., living with grandparents (p=.048)). Perception of successful aging differed significantly based on grade (p<.001). The perception of successful aging showed a positive correlation relative to mode of communication and organizational pattern. The mode of communication accounted for 4.7% of perception of successful aging. Conclusion: The significance of the study on the importance of mode of communication was confirmed by identifying the effects of the perception of successful aging. Nursing students may actively cope with crises through communication; thus, successfully recognizing aging in order to lead a healthy life. Furthermore, having a high perception of successful aging while treating an increasing number of elderly patients at the clinical practice is believed to have a positive effect on patient care.

• Journal of Home Health Care Nursing
• /
• v.27 no.2
• /
• pp.179-188
• /
• 2020

Purpose: This study aimed to identify the relationship among emotional happiness, spiritual need, and healthy aging and to identify the factors affecting healthy aging in middle-aged and elderly population. Method: The participants were 100 middle-aged and elderly individuals. Data were collected using self-report questionnaires from March 9 to May 27, 2020. Collected data were analyzed using the SPSS/WIN 26.0 program. Results: There was a positive correlation between healthy aging and emotional happiness (r=.70, p<.001) and spiritual need (r=.52, p<.001). The factors influencing healthy aging were gender (β=.13, p=.026), subjective health status (β=.19, p=.002), emotional happiness (β=.60, p<.001), and spiritual need (β=.34, p<.001). These variables explained 67% of healthy aging. Conclusion: Healthy aging had a significant impact on women than on men when subjective health status was good and when emotional happiness and spiritual need were high. Healthy aging of the middle-aged and elderly population has confirmed the importance of physical, emotional, and spiritual health. Therefore, development and operation of programs that include various aspects of physical, emotional, and spiritual for healthy aging should be considered to confirm their effectiveness.

• Journal of Families and Better Life
• /
• v.21 no.2
• /
• pp.145-154
• /
• 2003

As the life-expectancy is ever-increasing, and the proportion of the elderly population is growing steadily in every society of the world, it is ever more important to establish what factors allow certain elderly people to age successfully and remain relatively independent while others grow old less successfully and require extensive intervention. However, there is no consensus yet as to what successful aging means. Researchers have defined successful aging in a variety of ways. This study attempted to define the concept of successful aging and to clarify some dimensions of it through literature review. Previous approaches of studying successful aging and related themes were examined. Early perspectives including activity, disengagement, and continuity theories, Selective Optimization with Compensation (SOC) model by Baltes and Baltes, three different conceptions of successful aging, that is, psychological well-being, physical health, and wisdom, and MacArthur research on successful aging have been reviewed for this study. The definition derived from the review is: Keeping up continuous developmental processes to achieve wisdom or ego-integrity, without suffering any major disabilities in either physical or mental functioning, while maintaining psychological well-being and employing SOC strategies, and participating in positive relationships with significant others. The dimensions of successful aging are 1) personal resources, including physical health, cognitive competences, self esteem, and social support 2) adaptation process of SOC, and 3) psychological aspects, including psychological well-being and wisdom.