• Title/Summary/Keyword: community computing

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Modified SPaC Algorithm Using the Community Computing Network in huge area Community Computing Environment (광범위 Community Computing 환경에서의 Community Computing Network를 이용한 수정된 패킷 결합 알고리즘)

  • Song, Jwa-Hee;Choi, Jung-Dae;Chang, Hoon;Kim, Seok-Yoon
    • Proceedings of the Korean Society of Computer Information Conference
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    • 2008.06a
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    • pp.163-167
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    • 2008
  • 본 논문에서는 광범위 Community Computing 환경에서의 Community Computing Network의 에너지 효율과 신뢰성을 높이기 위한 수정된 SPaC(Simple Packet Combining)를 제안한다. 제안하는 수정된 SPaC는 같은 패킷을 두 개 이상의 오류가 있는 패킷을 이용하여 에러를 복구하는 기존의 SPaC를 수정하여 특정 threshold 값을 사용하여 감청 시 CPU의 처리량을 줄이고 패리티 패킷을 이용하여 높은 신뢰성과 보다 향상된 에너지 효율을 가진다.

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A Statistical Pattern Recognition Method for Providing User Demand in Community Computing (커뮤니티 컴퓨팅에서 사용자 요구 반영을 위한 통계적 패턴 인식 기법)

  • Kim, Sung-Bin;Jung, Hye-Dong;Lee, Hyung-Su;Kim, Seok-Yoon
    • Proceedings of the IEEK Conference
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    • 2009.05a
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    • pp.287-289
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    • 2009
  • The conventional computing is a centralizing system, but it has been gradually going to develop ubiquitous computing which moves roles away from the main. The Community Computing, a new paradigm, is proposed to implement environment of ubiquitous computing. In this environment, it is important to accept the user demand. Hence in this paper recognizes pattern of user's activity statistically and proposes a method of pattern estimation in community computing. In addition, user's activity varies with time and the activity has the priority We reflect these. Also, we improve accuracy of the method through Knowledge Base organization and the feedback system. We make program using Microsoft Visual C++ for evaluating performance of proposed method, then simulate it. We can confirm it from the experiment result that using proposal method is better in environment of community computing.

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A need-awaring multi-agent approach to nomadic community computing for ad hoc need identification and group formation

  • Choi, Keun-Ho;Kwon, Oh-Byung
    • Proceedings of the Korea Inteligent Information System Society Conference
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    • 2005.11a
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    • pp.183-192
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    • 2005
  • Recently, community computing has been proposed for group formation and group decision-making. However, legacy community computing systems do not support group need identification for ad hoc group formation, which would be one of key features of ubiquitous decision support systems and services. Hence, this paper aims to provide a multi-agent based methodology to enable nomadic community computing which supports ad hoc need identification and group formation. Focusing on supporting group decision-making of relatively small sized multiple individual in a community, the methodology copes with the following three characteristics: (1) ad hoc group formation, (2) context-aware group need identification, and (3) using mobile devices working in- and out-doors. NAMA-US, an RFID-based prototype system, has been developed to show the feasibility of the idea proposed in this paper.

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Study on the Optimization Algorithm for Member Lifetime in Community Computing Environments (커뮤니티 컴퓨팅 환경에서의 멤버 생존시간 최적화 알고리즘 연구)

  • Kim, Ki-Young;Park, Hyae-Seong;Noh, Kyung-Woo;Kim, Seok-Yoon
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.57 no.7
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    • pp.1273-1278
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    • 2008
  • In community computing environments, various members cooperate with each other systematically for attaining each community's goals. Because community computing environments are organized on the basis of PAN (Personal Area Network), each member commonly uses the power of batteries. If one member in community uses up the power of battery and does not operate normally, the community will not be able to provide the ultimate service goals for its users and be terminated finally. Therefore, it is necessary for accurate community operation to prevent a specific member's lifetime from terminating, as checking each member's power consumption in real-time. In this paper, we propose WEL (WEighted Leach) algorithm for optimizing lifetime of the members in community.

Group Mutual Exclusion Algorithm Using RMS in Community Computing Environments (커퓨니티 컴퓨팅 환경에서 자원 관리 서비스를 이용한 그룹 상호 배제 알고리즘)

  • Park, Chang-Woo;Kim, Ki-Young;Jung, Hye-Dong;Kim, Seok-Yoon
    • Proceedings of the IEEK Conference
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    • 2009.05a
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    • pp.281-283
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    • 2009
  • Forming Community is important to manage and provide the service in Ubiquitous Environments including embedded tiny computers. Community Computing is that members constitute the community and cooperate. A mutual exclusion problem occurs when many processors try to use one resource and race condition happens. In the expanded concept, a group mutual exclusion problem is that processors in the same group can share the resource but processors in different groups cannot share. As mutual exclusion problems might be in community computing environments, we propose algorithm which improves the execution speed using RMS (resource management service). In this paper describes proposed algorithm and proves its performance by experiments, comparing proposed algorithm with previous method using quorum-based algorithm.

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Member Framework for Community Computing in Ubiquitous Computing Environments (유비쿼터스 컴퓨팅 환경에서의 커뮤니티 컴퓨팅을 위한 멤버 프레임워크)

  • Kim, Han-Wook;Song, Se-Heon;Lee, Jung-Tae;Kim, Min-Koo
    • 한국HCI학회:학술대회논문집
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    • 2007.02a
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    • pp.796-801
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    • 2007
  • 유비쿼터스 지능 공간(Ubiquitous Smart Space)에서 동적으로 발생하는 다양한 문제를 협업을 통하여 해결할 수 있는 방법론으로 제안된 커뮤니티 컴퓨팅 (Community Computing) 모델을 기반으로 하는 개발 도구(Community Computing Development Tool Kit : CDTK)를 사용하면 특정 문제를 해결할 수 있는 커뮤니티 컴퓨팅 어플리케이션이 생성된다. 이 커뮤니티 컴퓨팅 어플리케이션이 실제로 유비쿼터스 지능 공간에 존재하는 uT-entity에 이식되어 동작하기 위해서 uT-entity의 종류에 상관없이 커뮤니티 컴퓨팅 어플리케이션이 배포될 수 있는 환경을 필요로 한다. 본 연구에서는 CDTK를 이용하여 생성된 커뮤니티 컴퓨팅 어플리케이션이 uT-entity에 배포(Deployment)되어 각 uT-entity가 커뮤니티의 멤버로 참여하여 멤버간의 협업을 통해 목적(Goal)을 달성할 수 있도록 지원하는 어플리케이션 프레임워크인 멤버 프레임워크(Member Framework)를 제안하고, 이를 이클립스 리치클라이언트 플랫폼(Rich Client Platform) 기반의 플러그인(Plug-In)으로 설계하고자 한다.

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An Exploratory Study of the Experience and Practice of Participating in Paper Circuit Computing Learning: Based on Community of Practice Theory

  • JANG, JeeEun;KANG, Myunghee;YOON, Seonghye;KANG, Minjeng;CHUNG, Warren
    • Educational Technology International
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    • v.18 no.2
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    • pp.131-157
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    • 2017
  • The purposes of the study were to investigate the participation of artists in paper circuit computing learning and to conduct an in-depth study on the formation and development of practical knowledge. To do this, we selected as research participants six artists who participated in the learning program of an art museum, and used various methods such as pre-open questionnaires, participation observation, and individual interviews to collect data. The collected data were analyzed based on community of practice theory. Results showed that the artists participated in the learning based on a desire to use new technology or find a new work production method for interacting with their audiences. In addition, the artists actively formed practical knowledge in the curriculum and tried to apply paper circuit computing to their works. To continuously develop the research, participants formed a study group or set up a practical goal through planned exhibitions. The results of this study can provide implications for practical approaches to, and utilization of, paper circuit computing.

The Impact of Social Network Service, Trust and Cognition on Customer Loyalty in Internet Shopping

  • Sun, Han-Gil
    • Journal of Information Management
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    • v.42 no.2
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    • pp.211-234
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    • 2011
  • The development of information technology improves the globalization of the world economy. This change was able to expand the cyber space, and the online community known as the cyber community is made within the existing offline community. From the cyber community's activity, the concept of social network services created, and recently developed social computing. Social computing is the current situation and the next step in the online community. Currently, most CIOs are using social computing for workplace empowerment. As online transactions become more active, the strategy to increase customer loyalty in Internet shopping is an effective tool to increase profit for the company, and as a method to maintain competitive. With the growth of electronic commerce, through insurance of customer loyalty on the Internet, a company can establish a long-term relationship with customers, so for this, it is important to have reliable relationship with customers. Also, through advertisement and commercial information, the cognition of Internet shopping looks can be effective in retaining customers. In this study, it explores how social computing and trust and cognition of Internet shopping are effective in maintaining customer loyalty. As the result of study, the trust and cognition of Internet shopping are significantly effective on customer loyalty, but the sense of social computing. Still, social computing has not matured enough to be as effective in retaining customer loyalty. However, it does indicate that social computing has significantly increased the trust and cognition in Internet shopping. In this study, as the concepts of the social network service and social computing are applied in Internet shopping, which are actively discussed by scholars, it is expected that the basis of the study could improve and present the idea of social shopping.

A Formal Model of Coordination for Supporting Community Computing in a Ubiquitous Environment (유비쿼터스 환경에서 커뮤니티 컴퓨팅 지원을 위한 코디네이터 개발)

  • Nam, Jin-Gyu;Kim, Hyun-Woo;Shin, Dong-Min;Park, Jae-Il;Hur, Sun
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.31 no.3
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    • pp.43-51
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    • 2008
  • Recent advances in mobile computing technologies and platform-independent information systems have enabled to realize a ubiquitous environment. Community computing has been developed as a useful tool for realizing collaborative services in a ubiquitous environment. In this paper, we present a formal model of a ubiquitous space that takes community concept into consideration and propose two management frameworks that prevent conflicts among communities. To demonstrate the validity of the proposed frameworks, an example for coordinating two communities is provided.

A Need-awaring Multi-agent Approach to Nomadic Community Computing for Ad Hoc Need Identification and Group Formation (유목커뮤니티 컴퓨팅에서 임의적 욕구파악과 그룹형성을 위한 욕구인지 다중에이전트 접근법)

  • Choi Keun-Ho;Kwon Oh-Byung
    • Journal of Intelligence and Information Systems
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    • v.12 no.2
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    • pp.17-32
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    • 2006
  • Recently, community computing has been proposed for group formation and group decision-making. However, legacy community computing systems do not support group need identification for ad hoc group formation, which would be one of key features of ubiquitous decision support systems and services. Hence, this paper aims to provide a multi-agent based methodology to enable nomadic community computing which supports ad hoc need identification and group formation. Focusing on supporting group decision-making of relatively small sized multiple individual in a community, the methodology copes with the following three characteristics: (1) ad hoc group formation, (2) context-aware group need identification and (3) using mobile devices working in- and out-doors. NAMA-US, an RFID-based prototype system has been developed to show the feasibility of the idea proposed in this paper.

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