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SACMAT
2009
ACM
14 years 3 months ago
2009
ACM
Traditional access control models, such as Role-Based Access Control (RBAC), do not take into account contextual information, such as location and time, for making access decision...
PPDP
2007
Springer
14 years 3 months ago
2007
Springer
Orc is a language proposed by Jayadev Misra [19] for orchestration of distributed services. Orc is very simple and elegant, based on a few basic constructs, and allows succinct an...
WIDM
2003
ACM
14 years 2 months ago
2003
ACM
A growing number of databases especially those published on the Web are becoming available to external users. Users of these databases are provided simple form-based query interfa...
SIGIR
2011
ACM
12 years 11 months ago
2011
ACM
Entities on social systems, such as users on Twitter, and images on Flickr, are at the core of many interesting applications: they can be ranked in search results, recommended to ...
EDBT
2002
ACM
14 years 9 months ago
2002
ACM
Abstract. Aggregate window queries return summarized information about objects that fall inside a query rectangle (e.g., the number of objects instead of their concrete ids). Tradi...