• The Journal of the Korea Contents Association
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• v.19 no.10
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• pp.472-486
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• 2019

This study was conducted to analyze the influence relationship between the elderly's readiness for old age and life satisfaction, and to verify the mediating effect of self-efficacy in the influence relationship between the elderly's readiness for old age and life satisfaction. For this, a survey was conducted on middle-aged people in Seoul and Gyeonggi-do, and frequency analysis, correlation analysis, and hierarchical regression analysis were conducted using SPSS 25.0. As a result of the analysis, life satisfaction was influenced by self-efficacy, social preparation for old age, physical preparation for old age, economic preparation for old age, and academic ability in order and It was confirmed that psychological factors rather than demographic characteristics were more influential factors on life satisfaction of middle-aged people. In addition, self-efficacy had a mediating effect on the relationship between the degree of preparation for old age and life satisfaction. Based on this, the alternatives to raise the life satisfaction of middle-aged people, the limitations of this study, and the follow-up studies were discussed.

• The Journal of the Korea Contents Association
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• v.14 no.10
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• pp.137-150
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• 2014

This study analyzes the perception of the old age life effects on the preparation for old age plan for veterans who are somewhat isolated from our society in spite of the increasing importance of the old age plan due to the rapid population aging society in Korea. The result of the study shows that meaningful differences in terms of characteristics of sociology of population are rank, level of education, religion, composition of family members in old age life plan in two parts(economic, leisure), whereas only property in physical part has a meaningful difference. That indicates the result was reflected by the character of military. The study on how veterans' perception of the old life affects the old age plan applied two contrasting factors - 'the successful perception of old age life' and 'the perception of expected matters in old age'. That represents those factors(economic, leisure) made positive effects on preparation for old age plan, but not in physical part. 'Expected perception of matters' made regulation effect, but 'success of old age perception' didn't in terms of regulation effect of learning activity as part of the veterans vocational training programs.

• Computers and Concrete
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• v.20 no.2
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• pp.215-227
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• 2017

A finite element model (FEM) for predicting early-age behavior of reinforced concrete (RC) bridge deck slabs with fiber-reinforced polymer (FRP) bars is presented. In this model, the shrinkage profile of concrete accounted for the effect of surrounding conditions including air flow. The results of the model were verified against the experimental test results, published by the authors. The model was verified for cracking pattern, crack width and spacing, and reinforcement strains in the vicinity of the crack using different types and ratios of longitudinal reinforcement. The FEM was able to predict the experimental results within 6 to 10% error. The verified model was utilized to conduct a parametric study investigating the effect of four key parameters including reinforcement spacing, concrete cover, FRP bar type, and concrete compressive strength on the behavior of FRP-RC bridge deck slabs subjected to restrained shrinkage at early-age. It is concluded that a reinforcement ratio of 0.45% carbon FRP (CFRP) can control the early-age crack width and reinforcement strain in CFRP-RC members subjected to restrained shrinkage. Also, the results indicate that changing the bond-slippage characteristics (sand-coated and ribbed bars) or concrete cover had an insignificant effect on the early-age crack behavior of FRP-RC bridge deck slabs subjected to shrinkage. However, reducing bar spacing and concrete strength resulted in a decrease in crack width and reinforcement strain.

• The Journal of the Korea Contents Association
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• v.15 no.1
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• pp.159-170
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• 2015

The subjects of this research were 384 men in the Chungbuk area and the effect of their attitude towards prostitution were analyzed. Subjects were divided into 3 age groups during the analysis and PASW Statistics 18.0 was used in material analysis. The main results of this study are as follows. First, the age group 'between 30 to 45 years of age' and 'between 45 to 60 years of age' displayed more positive attitude towards prostitution compared to the age group 'above 65 years of age'. Second, factors that effect the attitude towards prostitution were shown to be different depending on the group. In the age group 'between 30 to 45 years of age' and 'between 45 to 60 years of age', expressive coping behavior in sex coping behavior, official suppression, sexual equality awareness, work status, level of education were shown to have an effect. In the group 'above 60 years of age', controlled coping behavior in sex coping behavior, unofficial suppression, rate of satisfaction in conjugal relation, sexual equality awareness, physical condition were shown to have an effect. The significance of this research lies in the fact that it was the first to suggest prostitution prevention measure depending on the men's age group based on these objective analysis.

• Journal of the Korea Convergence Society
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• v.9 no.9
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• pp.309-317
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• 2018

The purpose of this study was to investigate the effect of bone age on physique and physical fitness in elementary school students. For this purpose, the structural equation model test was conducted based on the three-year longitudinal study. The results were as follows. First, bone age in boys and girls (1st~3rd grade) has a direct effect on the change of body size, but it does not affect the change of physical strength. Second, the bone age of the senior male students(4~6 grade) gave a direct effect on the change of physique, 50m running, and sit-up. On the other hand, it gave an indirect effect on push-ups, sitting basketball throws, and standing long jump. Third, the bone age of the female students(grades 4~6) affected directly on body size change, sit-up, side step and indirect effect on 50m running, half squat jump, and standing long jump. These results indicated that the evaluation of the bone age of the subjects should be included in the exercise ability evaluation items for the male and female students in elementary school over the fourth grade in relation to the myofunction.

• Journal of Ginseng Research
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• v.39 no.3
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• pp.250-256
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• 2015

Background: It has been known that ginseng can be applied as a potential nutraceutical for memory impairment; however, experiments with animals of old age are few. Methods: To determine the memory enhancing effect of red ginseng, C57BL/6 mice (21 mo old) were given experimental diet pellets containing 0.12% red ginseng extract (approximately 200 mg/kg/d) for 3 mo. Young and old mice (4 mo and 21 mo old, respectively) were used as the control group. The effect of red ginseng, which ameliorated memory impairment in aged mice, was quantified using Y-maze test, novel objective test, and Morris water maze. Red ginseng ameliorated age-related declines in learning and memory in older mice. In addition, red ginseng's effect on the induction of inducible nitric oxide synthase and proinflammatory cytokines was investigated in the hippocampus of aged mice. Results: Red ginseng treatment suppressed the production of age-processed inducible nitric oxide synthase, cyclooxygenase-2, tumor necrosis factor-${\alpha}$, and interleukin-$1{\beta}$ expressions. Moreover, it was observed that red ginseng had an antioxidative effect on aged mice. The suppressed glutathione level in aged mice was restored with red ginseng treatment. The antioxidative-related enzymes Nrf2 and HO-1 were increased with red ginseng treatment. Conclusion: The results revealed that when red ginseng is administered over long periods, age-related decline of learning and memory is ameliorated through anti-inflammatory activity.

• Journal of Labour Economics
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• v.34 no.1
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• pp.1-32
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• 2011

This paper explores the effect of relative age at elementary school entry, which is determined by birth date and school entrance law, on college entrance. First, I compare the college entrance rate between students born in January or February and those born in other months. Second, I estimate the effect of age at school entry on college entrance. Relatively older students at school entry are likely to have better educational outcomes during the first college entrance. However, these differences in educational outcomes seem to decrease the more that younger students repeat taking the college entrance exam.

• Asian-Australasian Journal of Animal Sciences
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• v.12 no.2
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• pp.161-164
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• 1999

Dairy performances of Pabna cows and its crossbreds with Sahiwal (SL) and Friesian (F) in the Baghabarighat dairying area of Bangladesh were evaluated. Four SL and three F sires were used for the crossbreeding. The exotic sire effect of individuals on their daughters were also evaluated in this study. It showed that the genetic group had a significant (p<0.05) effect on birth weight, age at first heat, calving interval, lactation length and lactation yield. The lowest birth weight (17.9 kg), longest age at first heat (39.2 m) and calving interval (16.3 m) shortest lactation length (199 d) and lowest lactation yield (728 L) were found in Pabna cows. The highest birth weight (22.5 kg). shortest age at first heat (25.5 m) and calving interval (13.7 m), longest lactation length (253 d) and highest lactation yield (1936 L) were found in the F crossbreds. Within the same breed, the effect of individual sire was significant (p<0.05) on age at first heat, lactation length and lactation yield. Individual sire effects of SL bulls differed significantly (p<0.05) but F sires had a non-significant (p>0.05) effect on calving interval in their progeny. The fat % and SNF % in milk and number of services required for conception did not differ (p>0.05) among inter-and intra- breed sire groups.

• The Journal of Asian Finance, Economics and Business
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• v.5 no.4
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• pp.213-223
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• 2018

The interest in decrepitude expanded by graying is gradually growing in modern society. Moreover, he concern over decrepitude along with healthy mind and body is increasing. Therefore, there are many concerns and efforts toward physical and mental health. In addition, the interest in and effort for appearance health and value is rising as well as physical and mind health. The middle age is the most stable age based on the economic and social status that had been achieved through the life, but it is the most stressful age due to physical health problem and appearance ageing. There are many advanced studies for self-esteem and life satisfaction in old age by using hair, skin-care, cosmetic, nail-art among beauty related fields but studies on self-esteem and perception of successful ageing through user satisfaction of beauty service is lacking. This study is aiming to verify empirically the positive effect of self-esteem improvement through user satisfaction of beauty service on perception of successful ageing for middle-aged over 50 years old. The study has assumed that the higher middle-aged's satisfaction of beauty service is, the more self-esteem improves and there has a mediated effect to contribute successful ageing.

• The Journal of the Korea Contents Association
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• v.20 no.10
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• pp.449-457
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• 2020

In the aged society, the quality of life of elders assessed by life satisfaction is important for successful aging. This study examined the impact of preparation for old age including social support and death anxiety on the life satisfaction of the elders. We analyzed the data which has obtained from 282 senior center users in Choong-chung-nam-do. A multiple hierarchical analysis showed the effect of preparation for old age, social support and death anxiety on the life satisfaction of the elders. In addition, we found a interaction effect preparation for old age and social support. These findings suggest the importance of social support and death anxiety as well as preparation for old age for successful aging.