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CSREASAM
2006
15 years 5 months ago
A New Robust and Secure Steganographic System for Greyscale Images
: The research work in this paper shows that the currently available stenographic methods might be quite easily detected by using sufficiently careful analysis of the transmitted d...
Hesham Elzouka
SODA
1997
ACM
115views Algorithms» more  SODA 1997»
15 years 5 months ago
Faster Construction of Planar Two-Centers
Improving on a recent breakthrough of Sharir, we find two minimum-radius circular disks covering a planar point set, in randomized expected time O(n log2 n).
David Eppstein
APN
2010
Springer
15 years 4 months ago
Forward Analysis for Petri Nets with Name Creation
Pure names are identifiers with no relation between them, except equality and inequality. In previous works we have extended P/T nets with the capability of creating and managing p...
Fernando Rosa Velardo, David de Frutos-Escrig
ALGORITHMICA
2008
88views more  ALGORITHMICA 2008»
15 years 4 months ago
Exact Algorithms for Exact Satisfiability and Number of Perfect Matchings
We present exact algorithms with exponential running times for variants of n-element set cover problems, based on divide-and-conquer and on inclusion
Andreas Björklund, Thore Husfeldt
COR
2006
75views more  COR 2006»
15 years 4 months ago
Extensions to emergency vehicle location models
This paper is concerned with extending models for the maximal covering location problem in two ways. First, the usual 0
Othman Ibraheem Alsalloum, Graham K. Rand