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BC
1998
96views more  BC 1998»
15 years 5 months ago
Evidence of phase transitions in heart period dynamics
Complexity measures of non-linear dynamics are a useful tool for quantifying observed stretching, folding, scaling and mixing processes in the Takens-reconstructed state space of h...
Henrik Bettermann, Peter Van Leeuwen
MFCS
2009
Springer
16 years 21 days ago
A Complexity Dichotomy for Finding Disjoint Solutions of Vertex Deletion Problems
We investigate the computational complexity of a general “compression task” centrally occurring in the recently developed technique of iterative compression for exactly solving...
Michael R. Fellows, Jiong Guo, Hannes Moser, Rolf ...
ADC
2007
Springer
93views Database» more  ADC 2007»
15 years 10 months ago
A Heuristic Approach to Cost-Efficient Derived Horizontal Fragmentation of Complex Value Databases
Derived horizontal fragmentation is one of the main database distribution design techniques. Unlike primary horizontal fragmentation, the decision of derived horizontal fragmentat...
Hui Ma, Klaus-Dieter Schewe, Qing Wang
NORDICHI
2004
ACM
15 years 11 months ago
Designing a collaborative virtual environment for introducing pupils to complex subject matter
Mission Queen Maud Land (MQML) is a collaborative virtual environment that was developed to explore new ways to stimulate secondary school pupils to collaborate in grasping comple...
Ragnhild Halvorsrud, Simen Hagen
CHI
2003
ACM
16 years 6 months ago
Simple cognitive modeling in a complex cognitive architecture
Cognitive modeling has evolved into a powerful tool for understanding and predicting user behavior. Higher-level modeling frameworks such as GOMS and its variants facilitate fast ...
Dario D. Salvucci, Frank J. Lee