1927 search results - page 157 / 386 » An Access Control Model for Location based Services |
173
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MSWIM
2006
ACM
16 years 14 days ago
2006
ACM
Security is a critical issue in mobile commerce, especially in mobile database systems since mobile environments are dynamic and traditional protection mechanisms do not work very...
197
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HICSS
1999
IEEE
15 years 10 months ago
1999
IEEE
In this paper, we motivate the importance of the field of mobile computing and survey current practical and formal approaches. We argue that the existing formalisms are not suffic...
236
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FASE
2008
Springer
15 years 8 months ago
2008
Springer
Abstract. To guarantee the security of computer systems, it is necessary to define security permissions to restrict the access to the systems' resources. These permissions enf...
190
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GLOBECOM
2007
IEEE
16 years 25 days ago
2007
IEEE
Abstract— A distributed medium access control (MAC) algorithm for uplink OFDMA networks under the IEEE 802.16 framework is proposed and analyzed in this work. We present a simple...
139
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ECRTS
1999
IEEE
15 years 10 months ago
1999
IEEE
Safety-critical systems typically operate in unpredictable environments. Requirements for safety and reliability are in conflict with those for real-time responsiveness. Due to un...