16843 search results - page 2950 / 3369 » On Generalized Authorization Problems |
183
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PODS
2008
ACM
16 years 7 months ago
2008
ACM
In the study of data exchange one usually assumes an openworld semantics, making it possible to extend instances of target schemas. An alternative closed-world semantics only move...
196
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PODS
2008
ACM
16 years 7 months ago
2008
ACM
We revisit the classical chase procedure, studying its properties as well as its applicability to standard database problems. We settle (in the negative) the open problem of decid...
211
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PERCOM
2007
ACM
16 years 6 months ago
2007
ACM
This paper develops a context aware framework to address the diverse communication needs of a modern enterprise. Such enterprises are characterized by workers in different locatio...
191
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MOBISYS
2007
ACM
16 years 6 months ago
2007
ACM
We consider the problem of providing vehicular Internet access using roadside 802.11 access points. We build on previous work in this area [18, 8, 5, 11] with an extensive experim...
210
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MOBIHOC
2008
ACM
16 years 6 months ago
2008
ACM
Relay-enabled wireless networks (eg. WIMAX 802.16j) represent an emerging trend for the incorporation of multi-hop networking solutions for last-mile broadband access in next gene...