Power efficient filtering of data on air
EDBT '94 Proceedings of the 4th international conference on extending database technology: Advances in database technology
Mobile wireless computing: challenges in data management
Communications of the ACM
Mobile computing and databases: anything new?
ACM SIGMOD Record
Data on Air: Organization and Access
IEEE Transactions on Knowledge and Data Engineering
Mobile Computing and Databases-A Survey
IEEE Transactions on Knowledge and Data Engineering
Optimal Channel Allocation for Data Dissemination in Mobile Computing Environments
ICDCS '98 Proceedings of the The 18th International Conference on Distributed Computing Systems
A Mobile Guide System for Visually Disabled Persons
ISADS '99 Proceedings of the The Fourth International Symposium on Autonomous Decentralized Systems
Digital city kyoto: towards a social information infrastructure
CIA'99 Proceedings of the 3rd international conference on Cooperative information agents III
Proceedings of the 2003 ACM SIGMOD international conference on Management of data
A new passenger support system for public transport using mobile database access
VLDB '02 Proceedings of the 28th international conference on Very Large Data Bases
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We have been developing mobile passenger support systems for the public transportation. In this application field, various kinds of data must be handled and integrated. Examples of such data are route information, fare information, area map, station map, planned operation schedule, real-time operation schedule, vehicle facilities and so on. Depending on the user situation, different information should be supplied and personalized. In this paper we propose the human support system used in the multi-channel data dissemination environments. On the other hand, the transportation systems can gather information about situations and demands of users and modify their services for users. In this paper we will discuss efficient methods to handle dynamic integration, personalization and filtering using multiple data dissemination channels and on-demand data channels. Current prototype system developed to be used visually handicapped passengers is also shown.