論文

This paper proposes the session layer communication continuity support for Java applications toward a continuous operation for the users. In a mobile computing environment mobile hosts move around thedifferent network segments even during applications communicate with the remote endpoint.In such a situation maintenance of thecommunication continuity between the applications is significant.In order to retain the communication continuity not only the mobilitysupport but the virtual circuit continuity support is required forapplications.Existing approaches on the network the transport and the sessionlayers do not provide the complete mobility and virtual circuitcontinuity for applications although they require the complicatedimplementation.``MobileSocket'' is a user-level enhanced socket library written inJava and provides the library-based session layer mobility andvirtual circuit continuity support for applications. Two mechanisms Dynamic Socket Switching (DSS) and Application LayerWindow (ALW) enforce MobileSocket and enable the implementationsimplicity.MobileSocket applications can be used in the Java mobile applications and the agents as well as in ordinary network applications.In this paper after we clarify the communication continuity andexisting approaches we present the MobileSocket design mechanism and evaluation results.This paper proposes the session layer communication continuity support for Java applications toward a continuous operation for the users. In a mobile computing environment, mobile hosts move around thedifferent network segments even during applications communicate with the remote endpoint.In such a situation, maintenance of thecommunication continuity between the applications is significant.In order to retain the communication continuity, not only the mobilitysupport but the virtual circuit continuity support is required forapplications.Existing approaches on the network, the transport and the sessionlayers do not provide the complete mobility and virtual circuitcontinuity for applications, although they require the complicatedimplementation.``MobileSocket'' is a user-level enhanced socket library written inJava, and provides the library-based session layer mobility andvirtual circuit continuity support for applications. Two mechanisms, Dynamic Socket Switching (DSS) and Application LayerWindow (ALW) enforce MobileSocket and enable the implementationsimplicity.MobileSocket applications can be used in the Java mobile applications and the agents, as well as in ordinary network applications.In this paper, after we clarify the communication continuity andexisting approaches, we present the MobileSocket design, mechanism, and evaluation results.

近年,誰もが日常生活中の情報を検知.蓄積できるライフログ環境が整ってきた.これまでライフログデータは,個人の行動変容促進に利用されてきたが,今後は研究室やスポーツチーム,学校,企業といった集団を対象した行動変容促進が可能になると考えられる.しかし,集団は個人とは異なり内部に様々な人間関係が存在するため,集団を対象とした行動変容促進モデルを構築する必要がある.本研究では集団の行動変容を促進するモデルとして,「競争」と「協力」を組み合わせた6種類のモデルを提案し,それぞれのモデルが集団の行動変容にどう影響するかを評価する.提案したモデルに基づき,大学の体育会野球部と研究室の異なる2つの集団を対象に3週間の行動変容実験を行った.実験結果を元に,各モデルが行動変容に与える効果を検証した.