planning - designing - developing IT
Special Interest Group on Systems Analysis and Design

Publications

A Spatiotemporal Data Management Method Using Inverse Differential Script

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According to popularization of the geographic information system (GIS), temporal data management has become very important. When GIS is...

Extracting Event Semantics from Video Data Based on Real World Database

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Video is considered the most effective medium for capturing events. There are two major approaches of representing video contents:...

Structured Modeling for Video Databases

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Video information is an important component of multimedia systems such as Digital Library, World-Wide Web (WWW), and Video-On-Demand (VOD)...

Structured Message Management for Group Interaction

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In a collaborative working environment, process automation is necessary in the sense that (a) to show a flow of...

Group Activity Database for Groupware Evolution

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This paper proposes a new type of database for collaborative work. Known types of databases for collaborative work are...

Timestamps to Detect R-W Conflicts in Mobile Computing

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In mobile computing, it is desirable to allow read and write accesses to occur on replicated copies of the...

Supporting Collaborative Work by Process-Based Transaction Model

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Collaborative work presupposes information exchange among participants. In contrast, traditional transaction technologies allow concurrent users to operate on shared...

Rumor: Mobile Data Access Through Optimistic Peer-to-Peer Replication

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Rumor is an optimistically replicated file system designed for use in mobile computers. Rumor uses a peer model that...

A Cooperative Distributed Text Database Management Method Unifying Search and Compression Based on the...

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A new text database management method for distributed cooperative environments is proposed, which can collect texts in distributed sites...

A Copy Update Mechanism for a Mobile Information Announcement System

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In this paper, the bandwidth problem between a mobile computer and an access point is discussed, and a copy...