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» Relaxing the Value Restriction
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PODS
2007
ACM
142views Database» more  PODS 2007»
14 years 9 months ago
Quasi-inverses of schema mappings
Schema mappings are high-level specifications that describe the relationship between two database schemas. Two operators on schema mappings, namely the composition operator and th...
Ronald Fagin, Phokion G. Kolaitis, Lucian Popa, Wa...
HYBRID
2010
Springer
14 years 3 months ago
Automatic invariant generation for hybrid systems using ideal fixed points
We present computational techniques for automatically generating algebraic (polynomial equality) invariants for algebraic hybrid systems. Such systems involve ordinary differentia...
Sriram Sankaranarayanan
PLDI
2009
ACM
14 years 3 months ago
A weakest precondition approach to active attacks analysis
Information flow controls can be used to protect both data confidentiality and data integrity. The certification of the security degree of a program that runs in untrusted envi...
Musard Balliu, Isabella Mastroeni
WINE
2009
Springer
138views Economy» more  WINE 2009»
14 years 3 months ago
On the Impact of Strategy and Utility Structures on Congestion-Averse Games
Recent results regarding games with congestion-averse utilities (or, congestion-averse games—CAGs) have shown they possess some very desirable properties. Specifically, they hav...
Thomas Voice, Maria Polukarov, Andrew Byde, Nichol...
SCALESPACE
2009
Springer
14 years 3 months ago
A Multi-scale Feature Based Optic Flow Method for 3D Cardiac Motion Estimation
Abstract. The dynamic behavior of the cardiac muscle is strongly dependent on heart diseases. Optic flow techniques are essential tools to assess and quantify the contraction of t...
Alessandro Becciu, Hans C. van Assen, Luc Florack,...