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2009
Springer
14 years 3 months ago
Virtual Communities of Practice's Purpose Evolution Analysis Using a Concept-Based Mining Approach
Today, social networks systems have become more and more important. People have change their way to relate and communicate. Therefore, how to enhance contents and organization of a...
Sebastián A. Ríos, Felipe Aguilera, ...
CAGD
2008
98views more  CAGD 2008»
13 years 10 months ago
Exact evaluation of limits and tangents for non-polynomial subdivision schemes
In this paper, we describe a method for exact evaluation of a limit mesh defined via subdivision and its associated tangent vectors on a uniform grid of any size. Other exact eval...
S. Schaefer, J. Warren
PG
2007
IEEE
14 years 4 months ago
Exact Evaluation of Non-Polynomial Subdivision Schemes at Rational Parameter Values
In this paper, we describe a method for exact evaluation of a limit mesh defined via subdivision on a uniform grid of any size. Other exact evaluation technique either restrict t...
Scott Schaefer, Joe D. Warren
CCS
2007
ACM
14 years 4 months ago
Do background images improve "draw a secret" graphical passwords?
Draw a secret (DAS) is a representative graphical password scheme. Rigorous theoretical analysis suggests that DAS supports an overall password space larger than that of the ubiqu...
Paul Dunphy, Jeff Yan
GRID
2007
Springer
14 years 4 months ago
Adaptive pricing for resource reservations in Shared environments
Application scheduling studies on large-scale shared resources have advocated the use of resource provisioning in the form of advance reservations for providing predictable and de...
Gurmeet Singh, Carl Kesselman, Ewa Deelman