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JNW
2010
69views more  JNW 2010»
13 years 6 months ago
On Local CAC Schemes for Scalability of High-speed Networks
Next generation networks are required to provide bandwidth on-demand for fine granularity sessions. In this sense, centralized CAC (Connection Admission Control) approaches could ...
Javier Aracil, José Alberto Hernánde...
COMGEO
2010
ACM
13 years 6 months ago
Computing the visibility map of fat objects
Abstract. We give an output-sensitive algorithm for computing the visibility map of a set of n constant-complexity convex fat polyhedra or curved objects in 3-space. Our algorithm ...
Mark de Berg, Chris Gray
SIGMOD
2004
ACM
105views Database» more  SIGMOD 2004»
14 years 7 months ago
The Priority R-Tree: A Practically Efficient and Worst-Case Optimal R-Tree
We present the Priority R-tree, or PR-tree, which is the first R-tree variant that always answers a window query using O((N/B)1-1/d + T/B) I/Os, where N is the number of ddimensio...
Lars Arge, Mark de Berg, Herman J. Haverkort, Ke Y...
SISW
2003
IEEE
14 years 27 days ago
Implementation of a Storage Mechanism for Untrusted DBMSs
Several architectures have been recently proposed that store relational data in encrypted form on untrusted relational databases. Such architectures permit the creation of novel I...
Ernesto Damiani, Sabrina De Capitani di Vimercati,...
DAM
2006
116views more  DAM 2006»
13 years 7 months ago
Using graphs for some discrete tomography problems
Given a rectangular array where entries represent the pixels of a digitalized image, we consider the problem of reconstructing an image from the number of occurrences of each colo...
Marie-Christine Costa, Dominique de Werra, Christo...