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COMPGEOM
2010
ACM
14 years 3 months ago
Adding one edge to planar graphs makes crossing number hard
A graph is near-planar if it can be obtained from a planar graph by adding an edge. We show that it is NP-hard to compute the crossing number of near-planar graphs. The main idea ...
Sergio Cabello, Bojan Mohar
SAMOS
2009
Springer
14 years 2 months ago
CABAC Accelerator Architectures for Video Compression in Future Multimedia: A Survey
The demands for high quality, real-time performance and multi-format video support in consumer multimedia products are ever increasing. In particular, the future multimedia systems...
Yahya Jan, Lech Józwiak
COCOON
2001
Springer
14 years 2 months ago
PC-Trees vs. PQ-Trees
A data structure called PC-tree is introduced as a generalization of PQ-trees. PC-trees were originally introduced in a planarity test of Shih and Hsu [7] where they represent par...
Wen-Lian Hsu
ESOP
2001
Springer
14 years 2 months ago
What Are Polymorphically-Typed Ambients?
The Ambient Calculus was developed by Cardelli and Gordon as a formal framework to study issues of mobility and migrant code [CG98]. We consider an Ambient Calculus where ambients...
Torben Amtoft, A. J. Kfoury, Santiago M. Peric&aac...
AFPAC
2000
Springer
257views Mathematics» more  AFPAC 2000»
14 years 2 months ago
The Multidimensional Isotropic Generalization of Quadrature Filters in Geometric Algebra
In signal processing, the approach of the analytic signal is a capable and often used method. For signals of finite length, quadrature filters yield a bandpass filtered approxim...
Michael Felsberg, Gerald Sommer