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COMGEO
2004
ACM
13 years 9 months ago
2004
ACM
We show it is possible to tile three-dimensional space using only tetrahedra with acute dihedral angles. We present several constructions to achieve this, including one in which a...
COMGEO
2004
ACM
13 years 9 months ago
2004
ACM
In k-means clustering we are given a set of n data points in d-dimensional space d and an integer k, and the problem is to determine a set of k points in d , called centers, to mi...
COMPLEXITY
2004
13 years 9 months ago
2004
: Explaining the maintenance of sexual reproduction remains one of the greatest challenges in biology. The theoretical oddity of sex is based on at least three advantages that asex...
COMPSEC
2004
13 years 9 months ago
2004
Abstract Up to now biometric methods have been used in cryptography for authentication purposes. In this paper we propose to use biological data for generating sequences of random ...
COMPUTER
2004
13 years 9 months ago
2004
partners are abstracted as Web services, we have introduced additional constructs to represent human users and define human interaction patterns. Each business process defined in o...