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ALGORITHMICA
2006
103views more  ALGORITHMICA 2006»
15 years 2 months ago
Recognizing Hole-Free 4-Map Graphs in Cubic Time
We present a cubic-time algorithm for the following problem: Given a simple graph, decide whether it is realized by adjacencies of countries in a map without holes, in which at mo...
Zhi-Zhong Chen, Michelangelo Grigni, Christos H. P...
JGAA
2008
100views more  JGAA 2008»
15 years 2 months ago
Convex Grid Drawings of Plane Graphs with Rectangular Contours
In a convex drawing of a plane graph, all edges are drawn as straight-line segments without any edge-intersection and all facial cycles are drawn as convex polygons. In a convex gr...
Kazuyuki Miura, Akira Kamada, Takao Nishizeki
JOLLI
2008
122views more  JOLLI 2008»
15 years 2 months ago
The Basic Constructive Logic for Negation-Consistency
In this paper, consistency is understood in the standard way, i.e. as the absence of a contradiction. The basic constructive logic BK c4 , which is adequate to this sense of consis...
Gemma Robles
CYS
1999
145views more  CYS 1999»
15 years 1 months ago
Eels: Electric Snakes
This paper presents the incorporation of a new internal force for active contours. This internal force is generated by an electric charge, distributed all-over the active contour....
Antonio Marín-Hernández, Homero V. R...
IJNSEC
2010
100views more  IJNSEC 2010»
14 years 9 months ago
On the Security of Yuan et al.'s Undeniable Signature Scheme
Undeniable signatures were proposed to limit the public verification property of ordinary digital signature. In fact, the verification of such signatures cannot be obtained withou...
Wei Zhao