• Title/Summary/Keyword: Network community

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Virtual Topology Control System for Evaluating Semi-infrastructured Wireless Community Networks (준-인프라 기반 무선 커뮤니티 네트워크 시험을 위한 가상 토폴로지 제어 시스템)

  • Kang, Nam-Hi;Kim, Young-Han
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.12 no.1
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    • pp.275-281
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    • 2012
  • Community network is a communication environment where heterogeneous devices can access and communicate with each other at any time and at any space to share information. To do so, mobile devices are required to be self-configured even in absence of communication infrastructures. Semi-infrastructured wireless ad-hoc network is a promising solution to meet with such a requirement. This paper proposes the VTC(virtual topology coordinator) system as an evaluation tool for examining network protocols that are intended to be deployed in the semi-infrastructured ad-hoc networks. VTC emulates multi-hops wireless network topology virtually using a mechanism of selective receiving MAC frame in a small area, where only a single hop communication is available. VTC system cannot consider all properties introduced in real wireless network, but do more wireless properties than verification through simulation.

Community Design Education for Sustainable Environment (건축교육헌장에 기초한 커뮤니티 디자인교육에 관한 연구)

  • Kimm, Woo-Young;Kang, Tae-Woong;So, Kab-Soo;Kim, Seung-Je
    • Journal of the Korean Institute of Educational Facilities
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    • v.19 no.2
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    • pp.59-66
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    • 2012
  • Community design education has covered the worldview dimension of the collaborative courses for sustainability draws on the architectural expertise developed in a network of community projects and therefore case studies of design education by the collaborative project-based learning in terms of participants, students, teachers and architects, such as 'Learning By Design' for the K-12 comprehensive program in Massachusetts addresses how a local society can make its community sustainable by both design and education. To understand that community design and education can provide professional development in all levels of skills and knowledge across disciplines and opportunities for collaborative learning and problem-solving, this research consists of case studies of the community design education including social systems that assist in organizing the local educational program as well as promoting the programs with public awareness of the community. It covers the UNESCO-UIA agenda of the community design and education that is to enhance the physical environment relating to human interaction by developing innovative alternatives of existing community and contributing voluntarily to neighborhoods through design. As the community design collaborative of design professionals and users is a structural approach to assess design quality, the cases address how to set up the architectural program in order to share pro bono design service and provide high-quality design resources available for sustainable environment.

K-Hop Community Search Based On Local Distance Dynamics

  • Meng, Tao;Cai, Lijun;He, Tingqin;Chen, Lei;Deng, Ziyun
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.12 no.7
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    • pp.3041-3063
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    • 2018
  • Community search aims at finding a meaningful community that contains the query node and also maximizes (minimizes) a goodness metric. This problem has recently drawn intense research interest. However, most metric-based algorithms tend to include irrelevant subgraphs in the identified community. Apart from the user-defined metric algorithm, how can we search the natural community that the query node belongs to? In this paper, we propose a novel community search algorithm based on the concept of the k-hop and local distance dynamics model, which can naturally capture a community that contains the query node. The basic idea is to envision the nodes that k-hop away from the query node as an adaptive local dynamical system, where each node only interacts with its local topological structure. Relying on a proposed local distance dynamics model, the distances among nodes change over time, where the nodes sharing the same community with the query node tend to gradually move together, while other nodes stay far away from each other. Such interplay eventually leads to a steady distribution of distances, and a meaningful community is naturally found. Extensive experiments show that our community search algorithm has good performance relative to several state-of-the-art algorithms.

A Study of Dynamic Characteristics in the Process of Community Building Projects in Korea (주민주도적 마을만들기의 동태적 측면에 관한 연구)

  • Jeon, Dae Uk;Kim, Hye Ihn;Kim, Kun-Wee
    • Korean System Dynamics Review
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    • v.14 no.3
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    • pp.51-74
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    • 2013
  • Recently, Community Rebuilding Projects (hereinafter CRPs) in Korea have been driven and motivated by community inhabitants by themselves, and highlighted as an alternative approach to overcome the limitation revealed normally in top-down projects of community vitalization by the Government. The CRPs encourage community-lead development because it happens to integrate multiple stakeholders and to help inhabitants to participate in the process of the CRPs by accumulating and enlarging social capital and network among inhabitants, and the social gain consequently raises the efficiency of public investment in revitalizing communities. In this study, the series of Causal Loop Diagrams (CLDs) is to be elaborated and the System-Thinking (ST) approach is to be presented to understand the dynamic characteristics residing in the above development process of rebuilding communities. The ST approach refers to the CLDs analyzing 19 remarkable Korean CRP cases, and leads to a conclusion including some of policy instruments to support the bottom-up CRPs in Korea. This study contributes a theoretical framework to understand the dynamic relation between social capital and community revitalization as well as empirical suggestions to respond to the issues of the CRPs in Korean local governments.

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Health Promotion Research on Community Collaboration and Partnership Building: Current Emphases and Directions (지역사회 건강증진 협력 개발 연구의 지향 과제)

  • Yoo, Seung-Hyun
    • Korean Journal of Health Education and Promotion
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    • v.26 no.4
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    • pp.83-90
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    • 2009
  • Objectives: As collaboration for community health promotion is much emphasized, the concept and process of community collaboration for health needs to be discussed. This paper discusses varying types of collaboration and collaboration building processes and suggests directions for enhancing community collaboration research and practice. Methods: Leading literature on community partnership building and community health development and current community partnership research program information were reviewed. Results: Although the term collaboration is used interchangeably with cooperation, partnership, network, or coalition, conceptual differences need to be acknowledged in order to develop and reinforce the processes of collaboration. Collaboration building goes in hand with community-based participatory research and systems thinking, which should be supported by long-term, systematic planning and evaluation research. Conclusion: Collaboration for community health promotion needs to be defined and agreed conceptually, thus collaboration process can be developed. Effective collaboration building will be facilitated by systematic thinking and participatory research. Research support system should appreciate the time-intensive, process-oriented nature of collaboration building by providing long-term research funding and emphasizing process and long-term evaluation.

Design of Location Based Social Network Service Model Centering around Smart Phone (스마트 폰 중심의 위치 기반 소셜 네트워크 서비스 모델 설계)

  • Ahn, Byung-Ik;Joo, Young-Do
    • Journal of Korea Society of Industrial Information Systems
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    • v.16 no.5
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    • pp.55-62
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    • 2011
  • Recently, LBS(Location Based Service) is expanding its service areas with the spread of smart phones and the contents of the service are more individualized according to the customer's needs. Specially, LBSNS(Location Based Social Network Service) is emerging as the most promising service of LBS. This paper introduces a LBSNS model to form a community to share common contents dynamically centering around the place of user's smart phone. The methodology suitable for implementing the effective management and the automatic update of the community of social network is presented in this paper. In addition, we describe the significant future researches of LBSNS under the upcoming mobile environment.

Process Evaluation and Influencing Factors of Building up a Network System between a National University Hospital and a Public Community Hospital in a Korean Provincial Area (한 광역자치도에서 국립대병원과 지방의료원간 협력체계 구축 사례의 성립 요인 및 과정평가)

  • Lee, Weon-Young
    • The Korean Journal of Health Service Management
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    • v.6 no.4
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    • pp.219-229
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    • 2012
  • This study aimed to explore influencing factors on the establishment of the network system between public hospitals and to make a process evaluation of it. we analyzed the case of a strategic alliance contracted by a National University Hospital(NUH) and a Community Hospital(CH). Main points of the project were regular dispatch of clinical specialists in the NUH such as gastroenterologist and running teleradiology program. The NUH considered the improvement of it's image as a public hospital as a successful element of the network program. The provincial office which have to manage the CH satisfied with these program in terms of helping CH in need of clinical specialists. Staffs in the CH pointed out the problem of discontinuity for patients who visited the CH. Three institutes argued that continuous support of central government in the relevant institution and budget could play the most important role in the advance of the network system between public hospitals.

Social Capital for the Baby Boomer Generation in the Future -Focused on Cohort Characteristics of the Baby Boomer Generation- (베이비붐 세대를 위한 미래 사회적 자본 -베이비붐 세대의 집단적 특성을 중심으로-)

  • Cha, Sung-Lan
    • Journal of Family Resource Management and Policy Review
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    • v.16 no.1
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    • pp.67-83
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    • 2012
  • Baby boomers are often defined by their support of their parents and their devotion to their children's educational success by providing financial and emotional aids. Now, 7.12 million baby boomers in South Korea are retiring, or are about to retire, without any retirement plans. Similar to financial stability, health, and leisure life, social capital is another important element in the quality life after retirement. This is because social capital can function as a potential resource network. Social capital is a source that provides money, information, goods, services, emotional aids, social relational opportunities etc. In the past, family and community provided social capital for the aged. However, the baby boomer generation cannot expect the same. The baby boomers have the task of creating new social capital that can assure their quality of life. Therefore, this study examines cohort characteristics of the baby boomer generation and, based on the examination, seeks an alternative for social capital. The results are as follows: First, social capital from the local community can be an alternative source of caring for the baby boomers in old age. Second, among the social capital of the local community, elderly care supported by a family friendly community is proposed. In addition, baby boomers must become the primary social capital that contributes to a mature civil society rather than a beneficiary of welfare for the aged.

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Factors Influencing Social Capital through the Enhancement of a Lifelong Learning City: Youngcheon and Andong City Case Study (평생학습도시 관련변인의 사회자본 영향에 관한 연구: 안동시와 영천시의 사례)

  • Kim Nam-Sun;Ahn Hyun-Sook
    • The Korean Journal of Community Living Science
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    • v.17 no.2
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    • pp.113-124
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    • 2006
  • This study examines the factors influencing social capital within a lifelong learning city as discussed in the Youngcheon and Andong City case study. Data was collected from 205 leaners in Andong City and 194 learners in Youngchun City. The data was then analyzed by the SPSS WIN 12.0 program. The statistical techniques used for this study were frequency, percentile, 1-test, and regression. The major findings of this study were as follows: To begin with, the learners in LLC were more likely to have positive attitudes toward the construction of a lifelong learning city. Second, the leaners in LLC were more likely to have social capital including norm and network. Furthermore, the learning opportunity had a positive effect in increasing the trust between learners. Learning support and support systems also had influence in increasing the social network between learners. Finally, support systems had a positive effect in improving the norm between learners.

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A Plan for Regional Informatization in Rural Community through Utilization of Public Libraries (지역공공도서관을 활용한 농촌지역의 지역정보화에 대한 전략적 구상)

  • Bae, Soon-Ja
    • Journal of the Korean Society for information Management
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    • v.21 no.3
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    • pp.45-60
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    • 2004
  • The purpose of this study is to induce the activation of public libraries in community through make use of public libraries as a plan for accomplishing regional informatization which based on regionalization and informatization. To acquire the twin goal of regional informatization and activation of public libraries, I propose a strategic plan which makes use of regional public libraries as an infrastructure of educating informatization and community-network concept. Especially those plans would cover recent background issues of super-national interest in rural welfare & development venture.