• Development and Reproduction
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• v.13 no.4
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• pp.227-237
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• 2009

Recently, adipose mesenchymal stem cells (AdMSC) that are similar to bone marrow MSC and blood derived MSC are thought to be another source for stem cell therapy. However, the diseases that can be applied for stem cells therapy are age-dependent degenerative diseases. Accordingly, the present study investigated the growth and differentiation potential to neural cells of human AdMSC (hAdMSC) obtained from aged thirty, forty and fifty. The growth of cells and cell viability were measured by passage and neural differentiation of hAdMSC was induced in neural differentiation condition for 10 days. Our results demonstrated that cell number, viability and morphology were not different from hAdMSC by age and passage. Immunofluorescence analysis of neural cell marker (TuJ1, NSE, Sox2, GFAP or MAP2) demonstrated no significant differences in neural cell differentiation by age and passage. As the number of passage was increased, the mRNA level of MAP2 and Sox2 was decreased in hAdMSC from age of 50 compared to hAdMSC from age of 30. In conclusion, the present study demonstrated that ability of neural cell differentiation of hAdMSC was maintained with ages, suggesting that autologous stem cells from aged people can be applied for stem cell therapy with age-dependent neural disease with the same stem cell quality and ability as stem cell derived from young age.

• The Journal of the Korea Contents Association
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• v.16 no.3
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• pp.586-595
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• 2016

The difference of generation is the main cause of society transition. If we know about the gap of generations, then we know where we go in future. This study focus on the differences of a regulation recognition among the generations. When we understand the differences of regulation recognition among the generations, we can realize the trait of regulation in society. In result, there are a lot of differences of regulation recognition among the generations. The older they are, the more they are positive to regulation. And the younger they are, the more they are negative to regulation. In particular, 50's generation have the opposite regulation recognition to 20's generation in specialty of regulation and in a conglomerate regulation.

• Journal of Digital Convergence
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• v.14 no.6
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• pp.395-403
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• 2016

This study investigates SNS usage behaviors of SNS users with a change of SNS use environment and an increase of users. This study compares the difference of use motivation, preferred type, and main use SNS according to socio-demographic variable of SNS users using cross tabulation analysis and also conducts a comparative analysis of main use SNS of each SNS user using correspondence analysis. The results show main use motivation of SNS is relationship seek, most preferred type is closed type, and main use SNS is Kakaostory. Next, we find that there are differences on use motivation, preferred type, and main use SNS, depending on the socio-demographic characteristics of SNS users. The result of correspondence analysis shows how users are using SNS services and what structure their competitive relations of SNS services are made. In the conclusion, the study presents summary of the findings, implications, and tasks for further studies.

• The Journal of the Korea Contents Association
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• v.20 no.5
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• pp.281-290
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• 2020

The purpose of this study was to examine how the consumer's entertainment, information, relevance, reliability, and perceived invasion affect the avoidance of advertising. Besides, the purpose of this study was to examine whether there is a difference according to the country and age in the effect of advertisement characteristics on the evasion. This study investigated the avoidance of mobile advertising among 254 Koreans and Chinese publics in their 20's and 40's, evaluated the results in terms of comparative analysis. Collected data were verified by multiple regression analysis and hierarchical regression analysis. The higher the advertising entertainment and relevance, the lower the avoidance of advertising. The higher the perceived penetration, the higher the avoidance of advertising. Besides, there were differences by country and age in the effects of advertising entertainment, information, relevance, and reliability on ad avoidance. The implications of this study are to find out how to reduce the mobile advertising avoidance of consumers by identifying the predictive factors that cause the avoidance of advertisements by country and age.

• Journal of the Korean Institute of Landscape Architecture
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• v.49 no.6
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• pp.16-26
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• 2021

For urban parks' rational and efficient management, research on creating green spaces in living area through citizen participation is continuously being conducted. However, in existing studies, citizens are recognized as a homogeneous group, and research on the intention to participate in park management according to user characteristics has not been conducted. A few studies have attempted to show differences through conceptual variables, such as user satisfaction and attachment to parks, but studies on sociodemographic factors, such as the users' age, have not been conducted. This study was conducted to ascertain the differences in preferred parks and park management participation methods by age, targeting various parks located in ten districts of Incheon Metropolitan City. Regression analysis was performed after collecting 1,226 questionnaires, applying a population-proportional allocation in the ten districts. As a result of the study, it was found that the difference according to the age of users has the most influence on the willingness to manage the park rather than the satisfaction or other factors. Also, a chi-square analysis was conducted to find the differences in preferred urban parks and management methods by age. The results showed that the choice to manage parks was statistically higher for those in their 50s or older, and the differences in preferred park types and desired park greening methods suggested implications for park management plans by age.

• Journal of Digital Convergence
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• v.17 no.12
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• pp.159-170
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• 2019

This study is an online survey for consumers in the metropolitan areas of Japan and Korea, which are advanced countries in Asia, and the maturity of the automobile market. The purpose of this study is to compare the results of Korea and Japan. As a result of this study, we analyzed the differences between the consumer characteristics and the optional attribute factors of low-carbon automobiles of Korea. There was a difference. It was found that the factors of low carbon car selection attribute differed with age, and that stability was more important when selecting low carbon car as income level increased. In Japan, there were no differences in the selection attribute factors of low carbon cars by gender, age and income. In addition, there is no difference in the relationship between the future purchase timings of low-carbon car types in both Korea and Japan. Implications of this study Korea has a meaningful result that Korea tends to select low-carbon automobiles with an emphasis on economic aspects and ages, and that safety tends to emphasize safety of low-carbon automobiles according to income levels. In the case of low carbon car, there was a tendency to select a low carbon car without any difference in consumer characteristics. The relationship between the expected purchase time according to the type of low carbon car and the Korean car show that the preferred car within the next 10 years among the low carbon car types is electric car and Japan prefers hybrid car.

• Journal of Korea Society of Industrial Information Systems
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• v.28 no.2
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• pp.61-75
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• 2023

This study aims to evaluate the usability of a banking app that is frequently used by the elderly. To this end, the usability PACMAD(People At the Center of Mobile Application Development) model that can be used in mobile was explained and the usability evaluation was empirically verified for the elderly over 60 years of age. For this study, descriptive statistics and variance analysis were conducted using SPSS 25.0 for 165 elderly people who had experience using banking apps. Looking at the analysis results of this study, efficiency, satisfaction, and effectiveness showed relatively high scores, and learnability, memorability, error, and cognitive load showed relatively low scores. In addition, in the verification of differences by age, it was confirmed that there were differences in all variables by age. These results suggest that the elderly's usability evaluation of banking apps and differences by age could be confirmed, but there is also a limitation that comparison with the general public is difficult because the age is limited to the elderly.

• Proceedings of the ESK Conference
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• 1993.10a
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• pp.220-220
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• 1993

체형은 남녀에 따라, 연령에 따라, 또 인종이나 시대에 따라 현저한 차이를 나타낸다. 특히, 인체의 목부위,허리둘레 등 연령에 따라 그 형태의 특징이 크게 변화해가는 부위들이 있으며, 이들 부위별 형태변화에 대한 연구는 전반적 체형연구와 함께 그 중요성이 크게 대두되어지고 있다. 이에 본연구에서는, 남성복의 드레스셔츠 설계에 가장 중요한 이체 부위인 목부위를 중심으로 연령 별 형태 변화를 측정하고자 하였으며, 측정은 슬라이딩 게이지법을 이용하여 목.어깨부위의 수직. 수평단면을 채취하였다. 또한 피험자를 20대 청년층, 40대 중년층, 60대 노년층의 세집단을 대상 으로 하므로서 목부위 단면형태에 대한 연령별 변화의 범위를 추측, 가령에 따른 변화의 상태를 생체학적으로 해석하고자 하였다.

• Journal of the Korea Convergence Society
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• v.10 no.10
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• pp.331-336
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• 2019

This study was conducted to compare of the health behaviors of single households by status of workers and age groups. The subjects were collected by purposive quota sampling(n=566). There was a significant difference by age in drinking frequency(p<0.001), smoking status(p<0.001) and smoking amount(p<0.001). In the smoking cessation plan, the permanent workers were significantly higher than other groups(p<0.05). In the reason for smoking cessation, the proportion of respondents who cited the cigarette cost was significantly higher in 20s(p<0.001). Overall, it can be said that personal characteristics such as age have more significant influences on drinking and smoking behaviors than socioeconomic characteristics such as status of workers.

• Research in Community and Public Health Nursing
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• v.2 no.1
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• pp.115.1-115.1
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• 1990

J시의 유배우 가임여성을 대상으로 인구와 사회특성 및 자녀수와 성선호 태도를 관찰하여 다음과 같은 결론을 얻었다. 1. 조사대상자의 연령구성은 $20\sim29$세가 53.17%, $30\sim39$세가 37.04%, $40\sim49$세는 9.26%로 $20\sim29$세군이 가장 많았다. 2. 조사대상자의 학력은 중졸이하가 74.01% 직업은 대부분 무직과 주부였고 종교는 불교가 45.37% 그 외 42.59%가 종교를 갖지 않았다. 3. 연령별 원하는 자녀수의 성선호 및 선호태도는 연령에 관계없이 모두 높게 나타났으며 특히 $40\sim49$세 군은 높은 남아선호태도를 보였다. 4. 연령별 학력과 자녀수선호태도에서 $20\sim29$세군에서 영향미치는 것으로 나타나고 종교와 직업의 자녀수선호태도에 영향을 미치는 군은 $40\sim49$세군에서였다. 5. 연령별 원하는 자녀수 및 성의 선호태도간의 비교에서는 전체 연령군에서 유의한 차이가 없었다.