• Proceedings of the Korea Information Assurance Society Conference
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• 2004.05a
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• pp.111-117
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• 2004

In distributed-computing environments, there is a strong demand for the authentication and the access control of distributed-shared resources. I have presented role-based access control (RBAC) concept that is in the spotlight recently. RBAC model shows the standardized access control of complicated organization's resources. In RBAC, senior role has junior role's permission by virtue of role hierarchy. But, junior role cannot perform the permission, which is granted to the senior or other role groups. Inheritances of permissions in role hierarchies are static. In order to tackle this problem, I propose a dynamic role assignment, which classified into passive role assignment and active role assignment, and design dynamic role assignment protocol and implement role assignment server.

• Journal of Internet of Things and Convergence
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• v.8 no.6
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• pp.65-73
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• 2022

This study identified the level of awareness of dangerous accidents by empirically analyzing the possibility of hazardous accidents at work and the possibility of dangerous accidents due to COVID-19 targeting the participating seniors who are active in the Senior Club, an organization dedicated to job placement for the elderly. The purpose of this study is to provide basic data for preparing measures to improve risk accidents that may occur in organizations in charge of job placement for the elderly and to suggest countermeasures to prevent dangerous accidents. For this purpose, data were collected from the elderly participating in 16 senior clubs in Busan, and 425 of the collected 430 were ultimately used. As a result of this study, first, it was found that the elderly who participated in a job-dedicated institution for the elderly generally perceived the possibility of occupational risk accidents and risk factors due to COVID-19 to be low. Second, it was found that there was a statistically significant difference in the probability of occurrence of hazardous accidents at work according to demographic characteristics during the participation period, and the probability of occurrence of dangerous accidents with COVID-19 was found to have statistically significant differences in the classification and age of the participating elderly. Based on the results of this study, the project manager suggested creating a safety accident management record sheet, preparing a risk management manual, and establishing a risk management system reflecting the individual characteristics of the participants.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.05a
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• pp.123-126
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• 2012

Increasing number of elderly's active participation in society, it is arisen the needs of senior information for training. Most of the senior's experiences in the digital device are low and because they do not get the information in formal education, they are vulnerable to the business office of utilizing the documents. For activities of society, it needs the excel education on enterprise document management training. According to this study, it is designed and implemented the 'Happyseniorcel' which is Excel application system for seniors. As a result of survey, it improves menu-use convenience, screen-color organization satisfaction and screen magnification efficiency compared to current excel. By using 'Happyseniorcel', it is expected to improve excel utilization and to encourage the social activities.

• The Korean Journal of Community Living Science
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• v.20 no.1
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• pp.103-121
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• 2009

Increased consensus among gerontologists exist on the need to pay greater attention to the reciprocal relationship between the social and spatial in order to understand the construction of aged identity and everyday lives of old people. With urbanization, spaces are increasingly age-graded and as a consequence, urban elders are socially isolated from the community. In this study, we examine the social interaction patterns in various places specifically designated for the elderly, such as the Senior Center, Senior Welfare Center, and Hall for the Aged in Seoul. Main purpose of this study is to understand everyday life experiences of space the elderly people residing in the city go through. Data were gathered through qualitative, case study method. Results show that such spaces were important sites for social interaction for urban elderly who lacked social spaces after retirement and active parenting role. Also, it was shown that each place presents different contexts for social interactions and certain components of social class differences existed. Heterogeneity within the participants of each place was also observed. Quite strong stereotypes about certain places were also observed among the urban elders. Based on these results, importance of developing a 'community perspective' in the study of old age is discussed.

• Journal of the Korean housing association
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• v.26 no.1
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• pp.119-128
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• 2015

This study aimed to develop Korean types of the university-based continuing care retirement community. CCRCs (Continuing care retirement communities), where senior residents are guaranteed to get continuous cares without moving out even under their deteriorating health condition, has been identified as the appropriate residences that can accommodate aging-in-place needs. Aging-in-place may be ideal for the increasing senior population and older households. Recently in the United States, as many retirees looked for intellectually and physically active environments that also offer intergenerational programs, university-based retirement communities (UBRCs) became popular and their number reached 60 campuses nationwide. This numbers is expected to grow significantly over the next two decades. We conducted case studies that targeted two representative UBRCs and identified four categories of main features. They were general characteristics, architectural features, services or programs, and management system. This study result highlighted key features of the UBRCs that can be the foundation for the future UBRCs development in Korea.

• Journal of Korean Public Health Nursing
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• v.19 no.1
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• pp.64-73
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• 2005

The purpose of this study was to discuss the difference of stress by the grade, examine the relationship between characteristics and main stress, and to investigate the effect of the National Examination of Registered Nurses on stress by using the stress self-rating scale targeting university nursing students (n=314), The stress self-rating scale consists of three subscales: stress responses, stressors and coping parts, such as perceived social support and a sense of humor. The data were analyzed by descriptive statistics, t-test, Pearson's correlation coefficient and regression analysis. The results showed that passing the National Examination of Registered Nurses was the first problem among the stressors. Stressors of the living factors and nursing factors, and subjective stressors of the surveyed nursing students were the highest among the senior students, but stressors of nursing factors increased according to the grade of the nursing students. Perceived stress responses were high in psychological responses of other aspects, and perceived stress responses increased according to the grade (p<.001). Senior students had a high weight of perceived stress responses (problem-focused, emotion-focused). and active and negative coping modes. Significant factors that explained the stressors were coping mode(r=.62-82. p<.01) and cognition(r=.19. p<.01). including the social support. These findings suggest that social support was very important for seniors. and that we have to develop approaches to decrease stress according to the student grade for nursing education process.

• Journal of Digital Convergence
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• v.19 no.2
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• pp.133-141
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• 2021

Recently, the number of seniors who engage in social and economic activities through digital platforms is increasing. Through this, they are building new social networks or creating profits. Therefore, this study aimed to conduct an in-depth interview with 17 seniors who are engaged in social and economic activities on a digital platform. This study examined their motivation and experience in detail through in-depth interviews. As a result of the study, three subjects (motivation for participation, evaluation and performance of activities, and requirements for stable activities) were derived. The results of this study are predicted to contribute to preventing social isolation of seniors by mediating digital platforms in the future and inducing them to become subjects of the digital economy.

• Journal of rehabilitation welfare engineering & assistive technology
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• v.12 no.1
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• pp.20-28
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• 2018

In this research, for the smooth cultural life of seniors, we recruit 92 smart seniors (male: 22, female: 70) and survey their preferred content sub-genre. The survey is mainly based on the two devices (PC, Smartphone) to be used. As a result of the study, there was a little difference in preference on the web pages between both devices, the video contents showed the similar preference, regardless of the device. Also, sub-genres surveyed show higher correlations with similar sub-genres in other content genres. So, If the result of this study is reflected in the development of cultural contents and the composition of content pages, it will be helpful for senior to enjoy the improved cultural life by lowering entry barriers accessing digital media contents.

• Journal of Family Resource Management and Policy Review
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• v.12 no.3
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• pp.23-43
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• 2008

This research investigates the effect of leisure activities on lifestyle satisfaction of senior citizens. The target of this research is 202 people over 60 years of age who live in Seoul. Collected data was analyzed using frequency, percentage, average, T-test, one-way ANONA, and logistic regression analysis. SPSS and the Excel PC Program were used for the analysis. The following is the summary of the result of this research. First - in terms of participation in leisure activities: more active participation is observed with the elderly who have a spouse than with those who do not in every kind of leisure activity (except for the pastime activities). Second - all of the variables indicating the level of satisfaction from activities of the seniors who have a spouse are by far higher than those of the elderly who have no spouse. Third - the leisure activities and the satisfaction from the activities prove affective variables on whether they have a spouse or not. Notably, the religious leisure activities are enjoyed more by those senior citizens who are married. Comparatively, the unmarried senior citizens participate more actively in recreational and pastime leisure activities. This study suggests various practical means to promote leisure activities to the elderly and to raise the level of satisfaction received from those activities, as well as to help those who are concerned with understanding and improving lifestyle satisfaction of the elderly population. Nonetheless, this analysis is limited due to the restriction on the number of objects and samples studied. Therefore, studies to analyze leisure activities by regions in order to account for a more balanced set of systematical tools should follow.

• Korean Journal of Community Nutrition
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• v.9 no.4
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• pp.464-471
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• 2004

For the purpose of developing ‘Web-Based Nutritional Education Program’, this study did instructional analysis, analysis of entry behaviors and learner characteristics to select instructional contents for nutritional education program for junior/senior high school students. Survey questionnaires were distributed from October 21, 2002 to October 26, 2002 to a total of 564 junior/senior high school students in Seoul. The total number of questionnaires collected and used in our study was 479, which is 84.9% of the total questionnaires distributed. As a result of the curriculum analysis of ‘Technology-Home economics’, subjects related with ‘food and nutrition’ in the 7$^{th}$ educational course study result, lessons including the contents of food and nutrition were ‘nutrition and meal of adolescent’ in 7th grade, ‘family meal management’ in 9th grade and ‘practice of home life’ in 10th grade. According to the curriculum analysis, ‘nutrition’ and ‘food’ were chosen for the superior subjects of nutrition education program and four subordinate subjects per superior one were developed. Then, entry behaviors and learner characteristics were analyzed： life characteristics, internet usage, anthropometrics data and nutritional knowledge. Students were interested in using computer and preferred passive activity to dynamic activity. According. to the analysis of internet usage, WBI for students should composed active parts such as game, moving image, immediate reply and follow-up bye-mail, bulletin board and com- munity activity. Students’ BMI were in normal range but they were lacked nutritional knowledge. We wrote performance objectives that were specific behavior skills to be learned, the conditions under which they must be performed and the criteria for successful performance. The next step for developing the WBI nutrition education program would be based on the results mentioned above.