• Journal of KIISE:Information Networking
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• v.31 no.2
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• pp.146-157
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• 2004

In order to provide continuous QoS guaranteed to a mobile user, it is required to deploy some kind of mechanisms which reserves resources in advance at the locations to which the mobile user is expected to move. An important issue with regards to these mechanisms is to minimize the waste of resources caused by redundant reservations while keeping up the QoS guaranteed services to the user In this paper, we propose a wireless network domain structure which deploys a special cell, called “a gray cell”. The boundaries of two or more neighboring domains are surrounded by the gray cells, and the gray cells are supposed to belong to all of its neighboring domains. Based on this wireless domain structure, we propose a mechanism which completely removes the waste of redundant resource reservation in the wireless network domain while greatly reducing the risk of reservation disruption caused by inter-domain handover. Using simulation, it is shown that the proposed mechanism can deal with inter-domain handover as effectively as it does with intra-domain handover. It is also presented that the proposed mechanism outperforms existing mechanisms with respect to reservation disruption time and packet losses caused by handovers.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.5
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• pp.68-78
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• 2017

The purpose of this study was to identify the influence of the individual-level and community-level factors in the ecological model on walking and to provide the basic data for a strategy that can increase walking for health promotion of adult workers. By combining the primary data of community health survey (CHS) (2011-2013) with the Korea national statistics annual book (2011-2013), the regional level variables were extracted from 253 municipal districts and the convergent big data with the hierarchical structure was produced. As a result, the increase in budget expenditure for public order and safety in social and cultural environment factors, the increase in budget expenditure for national and community land development in the leisure environment factors, and the number of buses in the transportation environment were increased by walking. In conclusion, walking was increased by the development of a community environment and bus transportation besides individual characteristics and behavior. Therefore, improving environment and public transportation will increase physical activity, such as walking, which will increase the health expectancy in community citizen workers.

• Journal of agricultural medicine and community health
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• v.39 no.1
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• pp.37-45
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• 2014

Objective: This study was conducted in order to evaluate an education program for cardio-cerebrovascular high-risk patients. Methods: To evaluate patients' quality of life, EQ-5D was used and an organized survey was conducted via calls and interviews for hypertension, diabetes patients who had visited the KHyDDI(Korea Hypertension Diabetes DaeguInitiative) education center or 70 clinics through out the nation. Results: The subjects included 537 patients, 320 of who were in the clinic education and 217 of who were in the education center program. Sixty eight of the subjects went through the EQ-5D evaluation before and after the education program. In the EQ-5D index distribution of their quality of life before the education program, there was a statistically significant difference in gender(p<0.001) with higher points among males. Regarding age, there was a statistically significant difference between those aged over 65 years and under 65(p<0.001), with higher points in the group under the age of 65. Further, the EQ-5D 5 scope index was statistically significant different before and after receiving the education(p<0.05). Conclusion: Therefore, the KHyDDI staged education program is effective for improving the quality of life. Moreover, it could contribute to the complications of the disease through a variety of approaches by considering both gender and age.

• Journal of Korean Library and Information Science Society
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• v.44 no.3
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• pp.5-27
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• 2013

The purpose of this study is to examine the characteristics and continuity of 'One Book, One City' community reading campaign in the U.S.A. An analysis of 584 'One Book' projects registered in the Library of Congress, the Center for the Books shows that this innovative model of reading campaign has been diffused through three stages: the beginning(1998-2001), the growth (2002-2006), and the second take-off(2007-present). The stability of more than fifty 'One Book' projects was confirmed and the continuing diffusion of 'One Book' model through 'The Big Read' Initiative and some projects' attempt to try new directions seem worth observing.

• Journal of the Korean Society of Hazard Mitigation
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• v.8 no.6
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• pp.67-71
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• 2008

This study is to retest of seoul traffic, all sorts of statistical data, the present condition of urban railway that local government and all sorts of research institution had researched. Even though, or something else with population and regional industrial distribution of seoul with worker and the present condition of the registrated cars and the change of increase, we have predicted the medium term and long-range solution. we have proposed the alternative plan about both of the problem that is the developmental construction direction of seoul urban railway and the resource insurance for urban railway construction.

• Proceedings of the Korean Information Science Society Conference
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• 2003.10a
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• pp.736-738
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• 2003

Hierarchical Mobile IP(HMW)는 Micro Mobility 관리를 위한 효율적인 방안을 제공한다. 즉, HMIP 환경에서는 Mobility Anchor Point(MAP) 관리 도메인내의 이동시 MN의 지역 바인딩 갱신(Local Binding Update) 메시지를 MAP에서 처리함으로써, 홈 도메인과의 등록 메시지 교환량을 감소시킬 수 있다. 그러나 MAP 관리 도메인과 MN 사이에는 기 설정된 비밀 정보가 존재하지 않기 때문에, 사용자 이동시 필요한 인증을 수행하기 위해서는 MN과 홈 도메인과의 정보 교환이 요구된다. 본 논문에서는 HMIP 환경에서 사용자의 인증을 위해 Diameter Mobile TPv6 응용을 적용한 모델을 제시한다. 이와 함께, MAP와 연계된 방문망의 AAA 서버로의 인증 권한 위임을 통해, 홈 도메인과의 정보 교환을 감소시키는 효율적인 Micro Mobility 관리 방안을 제공한다.

• Journal of the Korean Regional Science Association
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• v.32 no.3
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• pp.45-62
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• 2016

The main purpose of this study is to investigate whether the gap of fiscal self-sufficiency rates of 16 provincial governments in Korea has been narrowed and to suggest some remedies based on the empirical results. The panel data set from 1998 to 2013 is used and pooled OLS and system GMM regression techniques are employed. The fiscal self-sufficiency rates show downward trend and ${\beta}-convergence$ exists in absolute and conditional convergence analysis. The speed of conditional convergence anlysis is proved to be faster than that of absolute analysis. Both metropolitan cities and prefectures show convergence of fiscal self-sufficiency rates. We have found out that in the case of metropolitan cities, the proportion of workers in the tertiary industry has positive effect on fiscal self-sufficiency rates and in the case of prefectures number of cars per capita has positive effect. And in both cases increase in old population has negative effect.

• Research in Community and Public Health Nursing
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• v.8 no.2
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• pp.337-346
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• 1997

To know the characteristics of the unmarried mother. We need to investigate what kind of circumstances the unmarried mother comes from and under which conditions created her situation. This investigation's purpose is to provide general information on how to prevent this situation. There are many unmarried mothers registered in support groups for single mothers in A City. We surveyed 67 single mothers registered from Nov. 1 '96 - April 30 '97. The questions of the survey asked for general characteristics, family background, friendship, attitude and knowledge toward sex and the relationship with the baby's father. We analysed this research data into a percentages.

• The Journal of the Korea Contents Association
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• v.21 no.8
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• pp.546-558
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• 2021

This study focused on analyzing the contents of social big data produced in the online space, dealing with issues related to food in the community in the context of COVID-19. First, this study analyzed food-related issues that spread through regional websites and online community(cafes) after social distancing was implemented due to COVID-19. Next, this study analyzed the contents of food-related issues that spread through media news, SNS, and portals. As a result, there were more food-related posts on the homepages of other regions compared to the metropolitan areas such as Seoul and Gyeonggi, but in the case of online communities, there were more food-related issues in online communities registered in Seoul and Gyeonggi regions. Food-related keywords in regional online communities mainly contained content related to the local economy. In the media articles, SNS, and search portal issues, content that can be discussed in the consumption process of local community food-related policies, information, and products mainly appeared. Based on the results of the study, it was found that there is no specialized information sharing system for each community, that online communities can contribute to providing food information applicable to reality, and that it is possible to verify the performance of regional food policies through social media.

• Journal of agricultural medicine and community health
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• v.38 no.2
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• pp.108-115
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• 2013

Objective: This study aimed to examine the effects of chronic disease management program based on clinics for blood pressure control or glycemic control in patients with hypertension or type 2 diabetes mellitus in Incheon. Methods: An observational follow up study was done on 11,501 patients registrated at clinics from January 1st to December 31st, 2010 in Incheon. Experience of education and mandatory laboratory tests were assessed with the registration data and income status was identified by National Health Insurance data. The odds ratio and 95% confidence intervals were derived from logistic regression models. Results: The experience of education has a positive effect for blood pressure control in the non-control group with hypertension at the time of registration (Odds ratio 1.357, confidence intervals: 1.112~1.655). The experience of mandatory laboratory tests has a positive effect for blood pressure control in the control group with hypertension at the time of registration (Odds ratio 1.738, confidence intervals: 1.387~2.178). But the effects of the experience of education and mandatory laboratory test in patients with type 2 diabetes mellitus were not identified. Conclusions: This study revealed the relationship between the experience of education or mandatory laboratory testing and blood pressure control in patients with hypertension.