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JC
2008
77views more  JC 2008»
15 years 6 months ago
A numerical algorithm for zero counting, I: Complexity and accuracy
We describe an algorithm to count the number of distinct real zeros of a polynomial (square) system f. The algorithm performs O(log(nD(f))) iterations (grid refinements) where n is...
Felipe Cucker, Teresa Krick, Gregorio Malajovich, ...
JHSN
2006
100views more  JHSN 2006»
15 years 6 months ago
Reconfiguring Role Based Access Control policies using risk semantics
We present a refined model for Role Based Access Control policies and define a risk measure for the model, which expresses elements of the operational, combinatorial and conflict ...
Benjamin Aziz, Simon N. Foley, John Herbert, Garre...
JOT
2006
60views more  JOT 2006»
15 years 6 months ago
The Initium RJS Screensaver: Part 4, Automatic Deployment
The Intium RJS System makes use of screensavers to perform CPU scavenging for grid computing. This article shows how to automate the installation of the IRJS screensaver. The manu...
Douglas A. Lyon, Francisco Castellanos
167
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SIAMJO
2008
93views more  SIAMJO 2008»
15 years 6 months ago
Recursive Trust-Region Methods for Multiscale Nonlinear Optimization
A class of trust-region methods is presented for solving unconstrained nonlinear and possibly nonconvex discretized optimization problems, like those arising in systems governed by...
Serge Gratton, Annick Sartenaer, Philippe L. Toint
CGF
2004
89views more  CGF 2004»
15 years 6 months ago
Fast Multipath Radiosity using Hierarchical Subscenes
This paper presents an efficient acceleration technique for the global line radiosity Multipath method. In this approach, the scene is subdivided in a hierarchy of box bounded sub...
Francesc Castro, Mateu Sbert, László...