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ユビキタスシステムのための目的と役割の概念を用いた同時実行制御方式の研究

Research Project

Project/Area Number 18700100
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Media informatics/Database
Research InstitutionRissho University

Principal Investigator

榎戸 智也  Rissho University, 経営学部, 准教授 (10360158)

Project Period (FY) 2006 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2007: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 2006: ¥1,700,000 (Direct Cost: ¥1,700,000)
Keywords分散オブジェクトシステム / データベースシステム / 同時実行制御 / アクセス制御 / ロールベースアクセス制御 / 役割 / 目的 / トランザクション
Research Abstract

本研究は,トランザクションの目的と利用者の役割の重要度を明確に定義し,複数のトランザクションをその目的と利用者の役割の重要度を基に直列化して実行する新たな同時実行制御を提案することを目的としている.平成18年度は,複数のトランザクションをその目的と利用者の役割の重要度を基に直列化して実行するスケジューラの実装およびアルゴリズムの検証を行った.平成19年度は,平成18年度に実装およびアルゴリズム検証を終えたスケジューラを従来システムで多く使用されている2相ロック方式と比較することで,性能および有用性の評価を行った.初めに,実装したスケジューラにおけるトランザクションの優先度別実行待ち時間を2相ロック方式と比較した.評価の結果,提案方式では,目的および利用者に付与された役割の重要度が高いトランザクションが優先して実行されており,優先度の高いものほど,各オブジェクト上において短い待ち時間で実行されていることが確認できた.一方,2相ロック方式では,トランザクションの優先度に関わらず,全てのトランザクションが平均待ち時間の前後で実行されることが確認できた.また,システムのスループットを評価した結果,提案手法が2相ロック方式に比べて,スループットが高いことが確認できた.以上のことから,グループウェア等の現実世界での仕事の目的と実施者の役割を反映した情報システムの構築のために提案手法が有効であるといえる.

Report

(2 results)
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • Research Products

    (12 results)

All 2008 2007 2006

All Journal Article (8 results) (of which Peer Reviewed: 3 results) Presentation (4 results)

  • [Journal Article] A Legal Information Flow (LIF) Scheduler Based on Role-based Access Control Model (採録決定済み)2008

    • Author(s)
      Enokido, T, Barolli, V., and Takizawa, M.
    • Journal Title

      Computer Standards & Interfaces

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Concurrency Control Based on Role Concept2007

    • Author(s)
      Enokido, T
    • Journal Title

      International Journal of High Performance Computing and Networking (IJHPCN) Vol.5, No.1/2

      Pages: 75-83

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Distributed Multi-Source Streaming Models in Peer-to-Peer Overlay Networks2007

    • Author(s)
      Enokido, T, Tanaka, Y., Barolli, V., and Takizawa, M.
    • Journal Title

      Simulation Modelling Practice and Theory Vol.15, No.4

      Pages: 62-74

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Transactional Agents on Distributed Object Systems2007

    • Author(s)
      Tanaka, Y., Enokido, T., Takizawa, M.
    • Journal Title

      International Journal of High Performance Computing and Networking (IJHPCN) (採録決定済)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] ROLE-BASED SERIALIZABILITY USING ROLE ORDERING SCHEDULERS2006

    • Author(s)
      Enokido, T.
    • Journal Title

      Journal of Interconnection Networks (JOIN) Vol. 7 No. 2

      Pages: 437-450

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Distributed Coordination Protocols to Realize Scalable Multimedia Streaming in Peer-to-peer (P2P) Overlay Networks2006

    • Author(s)
      Enokido, T., Tanaka, Y., Itaya, M., Takizawa, M.
    • Journal Title

      Journal of Mobile Multimedia (JMM) Vol. 2 No. 4

      Pages: 283-296

    • Related Report
      2006 Annual Research Report
  • [Journal Article] HAMS : Scalable Peer-to-Peer Multimedia Streaming Model in Heterogeneous Networks2006

    • Author(s)
      Itaya, S., Hayashibara, N., Enokido, T., Takizawa, M.
    • Journal Title

      Journal of Computer and System Sciences (JCSS) Vol. 72 No. 7

      Pages: 1221-1225

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Satisfiability and Trustworthiness of Acquaintances in Peer-to-Peer Overlay Networks2006

    • Author(s)
      Watanabe, K., Enokido, T., Takizawa, M.
    • Journal Title

      Journal of Information Systems Frontier (ISF) Vol. 8 No. 4

      Pages: 271-284

    • Related Report
      2006 Annual Research Report
  • [Presentation] A Legal Information Flow (LIF) Scheduler for Distributed Systems2007

    • Author(s)
      Enokido, T. and Takizawa, M.
    • Organizer
      The Third International Workshop on Performance Modelling and Analysis of Communication in Wired and Wireless Networks (PMAC-2WN)
    • Place of Presentation
      Hsinchu, Taiwan
    • Related Report
      2007 Annual Research Report
  • [Presentation] Design and Evaluation of a Legal Information Flow (LIF) Scheduler in a Role-based Access Control Model2007

    • Author(s)
      Enokido, T. and Takizawa, M.
    • Organizer
      The 2nd International Workshop on Advanced Distributed and Parallel Network Applications (ADPNA 2007)
    • Place of Presentation
      Xidian, China
    • Related Report
      2007 Annual Research Report
  • [Presentation] Role-based Scheduling and Synchronization Algorithms to Prevent Illegal Information Flow2007

    • Author(s)
      Enokido, T., V. Barolli, and Takizawa, M.
    • Organizer
      The First International Conference on Network-based Information Systems (NBiS2007)
    • Place of Presentation
      Regensburg, Germany
    • Related Report
      2007 Annual Research Report
  • [Presentation] Role-based Concurrency Control in a Subject-and Purpose-Oriented (SPO) View2007

    • Author(s)
      Enokido, T., Barolli, V., and Takizawa, M.
    • Organizer
      The IEEE 21st International Conference on Advanced Information Networking and Applications (AINA2007)
    • Place of Presentation
      Niagara Falls, Canada
    • Related Report
      2007 Annual Research Report

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Published: 2006-04-01   Modified: 2016-04-21  

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