• Journal of the Institute of Electronics Engineers of Korea TC
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• v.44 no.10
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• pp.55-63
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• 2007

Multicast is an efficient transport mechanism for community communications and MANET is recently regarded as a promising solution for support ubiquitous computing as an underlying network technology. However, it is hard to deploy multicast mechanism into MANET owing to scarce resources in wireless networks and unpredictable changes in network topology. Several multicast mechanisms have been proposed in the literature to overcome the limitations. Especially, overlay multicasting schemes present several advantages over network based multicasting schemes. Yet, the overlay multicasting schemes still introduce redundant data transmissions that waste network bandwidth and battery of relay nodes. As a result the performance of the network is degraded. To reduce the redundancy, we propose an efficient way to construct an overlay structure as a multicast data delivery tree that utilizes a branch node which belongs to the tree. By using network simulation, we show that the proposed scheme presents higher packet delivery ratio and lower transmission cost than previously proposed schemes.

• Korean Journal of Community Nutrition
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• v.21 no.3
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• pp.247-255
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• 2016

Objectives: Food allergy appears to be increasing in prevalence and can potentially result in significant damaging impact on children's mental and physical health. This study investigated how dietitians/nutrition teachers in Incheon, where a fatal fool allergy incidence occurred, manage food allergy issues in school lunch systems. Methods: A survey with a pre-tested questionnaire was conducted with 358 dietitians/nutrition teachers in Incheon area. The final analytical sample included questionnaire data from 208 study participants (58.1%). Statistical analyses used SPSS ver 19.0. Results: A total of 99.5% respondents reported having received food allergy education. The respondents showed a correction rate of the food allergy test slightly higher than 70%, where nutrition teachers and respondents working in elementary schools had correction rates higher than dietitians and those working in middle schools (p<0.05). All respondents reported regular monitoring to identify students with food allergy and making notification of allergy-prone foods on menu in their school. More nutrition teachers provided "elimination meals" (57.6%) or "replacement meals" (37.0%) than dietitians (43.1%, 19.8%, respectively) (p<0.05). Elimination and replacement meals were provided more in elementary schools than in middle schools (p<0.05). Although counseling students with food allergy on nutrition was done by 64.9% of respondents, the areas of counseling were limited to basics of food allergy and how to use the notification system on menu. To prepare for handling food allergy events effectively, networks with regional clinics or hospitals (34.1%), hotline with parents (87.4%), and keeping an Epi-Pen ready (46.7% elementary school) were established. Only 34.1% of respondents knew how to use Epi-Pens. Conclusions: Dietitians and nutrition teachers in Incheon widely adapted food allergy management methods. It appears that education/training on food allergy for dietitians/nutrition teachers can move on from teaching basics of food allergy to providing applicable food allergy management methods at school system.

• The Korean Journal of Community Living Science
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• v.22 no.3
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• pp.341-349
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• 2011

As elder abuse has become a social problem, it has drawn a great deal of attention from researchers and policy-planers. While there have been a number of studies addressing various issues related to elder abuse, the present study aims to explain whether and how the perception of elder abuse would differ among the elderly themselves. In particular, the study focuses on the differences between urban and rural areas. Family-centered culture is believed to have a stronger influence in rural areas compared to urban areas. This cultural tradition highlights the importancy of the family compared to the individuals. Thus, the elderly who experience abuse would take it as personal matter rather than publicizing it. In addition, the information and campaigns on preventing elder abuse are less prevalent in rural areas than in urban areas due to limited communication networks. For these reasons, the study suggests a hypothesis that the elderly in rural areas are less perceptive to elder abuse. Using 6,709 persons aged 65 and over from a nationwide survey conducted by the Korean Institute for Health and Social Affairs in 2009, the study ran regression analysis on 4 types of elder abuse including psychological, financial, physical and neglect. The results show that regardless of types of abuse, the elderly in rural areas have lower levels of perception than the elderly in urban areas do. In addition, the frequency of social activities is positively related to the perception of elderly abuse. This is also true for the different types of elder abuse. The findings suggest that social effort to prevent elder abuse consider the urban-rural differences and their sources.

• Research in Community and Public Health Nursing
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• v.29 no.2
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• pp.244-256
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• 2018

Purpose: This study tried to understand discourses of life-sustaining treatments in general daily and healthcare newspapers. Methods: A text-network analysis was conducted using the NetMiner program. Firstly, 572 articles from 11 daily newspapers and 258 articles from 8 healthcare newspapers were collected, which were published from August 2013 to October 2016. Secondly, keywords (semantic morphemes) were extracted from the articles and rearranged by removing stop-words, refining similar words, excluding non-relevant words, and defining meaningful phrases. Finally, co-occurrence matrices of the keywords with a frequency of 30 times or higher were developed and statistical measures-indices of degree and betweenness centrality, ego-networks, and clustering-were obtained. Results: In the general daily and healthcare newspapers, the top eight core keywords were common: "patients," "death," "LST (life-sustaining treatments)," "hospice palliative care," "hospitals," "family," "opinion," and "withdrawal." There were also common subtopics shared by the general daily and healthcare newspapers: withdrawal of LST, hospice palliative care, National Bioethics Review Committee, and self-determination and proxy decision of patients and family. Additionally, the general daily newspapers included diverse social interest or events like well-dying, euthanasia, and the death of farmer Baek Nam-ki, whereas the healthcare newspapers discussed problems of the relevant laws, and insufficient infrastructure and low reimbursement for hospice-palliative care. Conclusion: The discourse that withdrawal of futile LST should be allowed according to the patient's will was consistent in the newspapers. Given that newspaper articles influence knowledge and attitudes of the public, RNs are recommended to participate actively in public communication on LST.

• Korean Journal of Community Nutrition
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• v.5 no.2
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• pp.193-200
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• 2000

This study examined the experience and intention of health food use regarding the different type of health foods among 201 middle-aged Korean men form urban areas. Based upon the results of a prestudy, health foods were classified into 4 groups including Chinese medicine(CM), toner foods(TF), vitamin or mineral supplements(VMS), and other manufactured heath food supplements(MHFS). compared with the4 case of health food experience, the similar proportion of the subjects were intended to use CM( 70%) and MHFS( 40%), yet the smaller proportion of them had the intention for TF(46%) and VMS(52%). Our subjects mainly obtained information on CM and TF from social networks, such as families, relatives, friends and neighbors and VMS and MHFS from mass media. Expected effects of health food consumption were different by the type of health food. The most positive expected effects were found in CM, followed by VMS. However, there was weak evidence for the positive effects of the TF and MHFS. Upon the consumption of health foods, our subject appeared to expect to their body energy to increased and body functions to be improved in general. Multivariate analyses indicated the importance of expected effects of health food consumption and aging symptoms as determinants of future health food use. Experience was rarely associated with intention in health food use. This study suggests that educated middle-aged Korean men may have a rational attitude toward health food use. Regarding different attitudes and behavior toward the different type of health foods, further research should consider the nature of each type of health foods. The limitations of this study are also discussed.

• Journal of Information Science Theory and Practice
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• v.8 no.3
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• pp.64-76
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• 2020

Scientometrics and social network analysis (SNA) measures were used to analyze the international scientific collaboration (ISC) of All India Institute of Medical Sciences (AIIMS) for a period of 10 years (2009-2018). The dataset consists of 19,622 records retrieved from the Scopus database. The mean degree of collaboration 0.95 implied that researchers of AIIMS tend to collaborate domestically (80.29%) and internationally (14.67%). The data exhibits a hyper authorship pattern, and a medium-size research team consists of 4 to 10 authors who contributed a maximum of 62.08% (12,182) publications. 71.97% of research findings are scattered in journal articles. The most preferred journals published 58.55% of medical literature. An undirected collaboration network is constructed in Pajek to study the ISC of AIIMS during the period 2009-2018 which consists of 179 vertices (Vn) and 11,938 edges. The degree centrality (Dc) identified that the United States of America (Dc - 54; CC - 0.99) and United Kingdom (Dc - 41; 0.98) are the most collaborative countries in the whole network as well as the most influential countries. The Louvain community detection method is used to detect influential research groups of AIIMS. The temporal evolution of ISC of AIIMS studied through scientometrics and SNA measures shed light on the structure and properties of ISC networks of AIIMS. It revealed that AIIMS, India has taken keen steps to enrich the quality of research by extending and encouraging the collaboration between institutions and industries at the international level.

• Journal of Convergence for Information Technology
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• v.11 no.9
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• pp.50-57
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• 2021

The purpose of this study was to typology the integrated care needs of communitydwelling elderly, explore the socio-demographic characteristics of each type, and determine their effects on depression. The secondary data analyses using the 2017 National Survey of the elderly were conducted. The research results are as follows: First, as a result of typology patterns of care needs of the elderly based on the number of chronic diseases, ADL/IADL, dwelling satisfaction, social activities, and social support networks, three clusters were derived; 'low care needs group (LCN), 'high social needs group (HSN)' and 'complex care needs group (CCN)'. Second, compared to HSN, CCN was characterized by older, women, low educational level and urban residence. Third, the level of depression in LCN was lower than that of the HSN, and the depression level of CCN was higher. The practical and policy implications of the results were discussed.

• The Journal of Korean Society for School & Community Health Education
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• v.22 no.3
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• pp.83-96
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• 2021

Background & objectives: Cognitive function decline is a main factor influencing the overall life of the elderly and places a burden of society. The aime of this study was to investigate the risk factors of cognitive function decline of elderly living alone and living with a spouse. Methods: This study used the Korean Longitudinal Study of Ageing from 2014 to 2018. 243 older adults who lived alone and 1,155 lived with a spouse with the Korean version of Mini Mental State Examination scores in normal range at the time of 2014 were included in the analysis. Logistic regression analysis was conducted to determine the difference of risk factors affecting cognitive function decline between in elderly living alone and elderly living with a spouse. Results: Cognitive function decline incidence rate of elderly living alone was 30.5% and the elderly living with a spouse showed 23.0%. According to the results of logistic regression analysis, the risk factors of cognitive function decline in the elderly living alone was age and residential area, while in the elderly living with a spouse were age, education level, social networks, and depression. Conclusions: The factors that affect the cognitive function decline of the elderly living alone and the elderly living with a spouse were different. Accordingly, other measures to prevent cognitive decline are necessary.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.33 no.2
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• pp.97-119
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• 2022

The purpose of this study is to suggest strategies to improve and revitalize public small libraries established and operated by local governments among small libraries in Yangpyeong-gun. For this purpose, basic factors to be considered for the analysis of the current situation were derived by examining the policies and prior studies of small libraries. Based on these factors, the operation status of the public small libraries were analyzed, and interviews were conducted with the itinerant libertarians and staffs. As a result of the analysis, the main problems were the deterioration of a building, the lack of manpower and expertise, and the collection and program that did not reflect regional characteristics. In this study, we suggested a revitalization strategy such as improvement of the operating system, development of community-focused life-friendly libraries, reinforcement of manpower and expertise, development of book collections and reading culture programs with regional specialization, and establishment of community networks.

• Journal of Appropriate Technology
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• v.7 no.2
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• pp.225-234
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• 2021

The purpose of this paper is to examine commercialization model of appropriate technology through the case of the Lao-Korea Science and Technology Center (LKSTC). LKSTC has developed washing, water treatment, and sterilization technology in the agrifood sector and three types of pico-hydro generator, Pico-solar hybrid system, and energy remote monitoring technology in the renewable energy sector. Commercialization of appropriate technology was successfully carried out through the establishment of Kaipan community business, school enterprises, and social enterprise. The policy implications are as follows. First, the commercialization of appropriate technology in developing countries should enhance the linkage with the regional development policies of the recipient countries. Second, in order to minimize market risk, innovative technology development and local startup networks should be properly established. Finally, the mid and long term efforts are needed to increase the sustainability of the business.