Abstract: . . .  ties, Proceedings of the 1st International Semantic Web Conference, Eds. I. Horrocks and J. Hendler, LCNS 2342, Springer Verlag, 2002. 20. Sadeh, N., Gandon, F., Chan, T., Van, L., Kwon O., Takizawa, K.: Context-Aware m-Commerce: A Semantic Web Approach, Proceedings of the 5th International Conference on Electronic Commerce, Pittsburgh, PA, (2003) 21. Schilit, W.: A System Architecture for Context-Aware Mobile Computing, Ph.D. Thesis, Columbia University, 1995. . . .
. . .  The Active Badge Location System, ACM Transactions on Information Systems 10(1) (1992) 91-102. 24. W3C: OWL Web Ontology Language Reference, Working Draft 31 March 2003, http://www.w3.org/TR/owl-ref/ 25. W3C: Web Services Description Language (WSDL) 1.1, No . . .
. . .  Semantic Web environ- ment for open access to a user's contextual resources, thereby reducing the costs associated with the development and maintenance of context-aware applica- tions. A second objective is, through Semantic Web technologies, to empower users to selectively control who has access to their contextual information and under which conditions. This work has been carried out in the context of my Campus, a context-aware environment aimed at enhancing . . .
. . .  their personal information. The need for lever- aging a variety of contextual attributes and the students demand for privacy strongly argue for Semantic e-Wallets such as the one presented here. A key challenge how- ever remains to reconcile the power of these Semantic environments with all impor- tant usability requirements that demand systems that are flexible, yet easy to config- ure. We are experimenting with different approaches to editing and learning user  . . .
. . .  great variety of contextual resources. Our experiments also confirmed that users are concerned about protecting access to their personal information. The need for lever- aging a variety of contextual attributes and the students demand for privacy strongly argue for Semantic e-Wallets such as the one presented here. A key challenge how- ever remains to reconcile the power of these Semantic environments with all impor- tant usability requirements that demand systems that . . .
. . .  Schilit, W.: A System Architecture for Context-Aware Mobile Computing, Ph.D. Thesis, Columbia University, 1995. 22. Schilit, B., Adams, N., Want, R.: Context-Aware Computing Applications. Proc. of the Workshop on Mobile Computing Systems and Applications, IEEE Computer Society, Santa Cruz, CA, (1994) 85-90 23. Want, R., Hopper, A., Falcao, V., Gibbons, J.: The Active Badge Location System, ACM Transactions on Information Systems 10(1) (1992) 91-102. 24. W3C: OWL . . .
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