167 search results - page 16 / 34 » Optimization of Query Plans in the presence of Access Limita... |
SIGMOD
2004
ACM
14 years 7 months ago
2004
ACM
The prevalent use of XML highlights the need for a generic, flexible access-control mechanism for XML documents that supports efficient and secure query access, without revealing ...
EDBT
2002
ACM
14 years 7 months ago
2002
ACM
Abstract. Estimating the sizes of query results, and intermediate results, is crucial to many aspects of query processing. In particular, it is necessary for effective query optimi...
RAS
2007
13 years 7 months ago
2007
In free-floating mode, space manipulator systems have their actuators turned off, and exhibit nonholonomic behavior due to angular momentum conservation. The system is underactua...
DEBU
2002
13 years 7 months ago
2002
An increasing number of business users and software applications need to process information that is accessible via multiple diverse information systems, such as database systems,...
ICASSP
2011
IEEE
12 years 11 months ago
2011
IEEE
We consider distributed algorithms to optimize random access multihop wireless networks in the presence of fading. Since the associated optimization problem is neither convex nor ...