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PODS
2007
ACM
171views Database» more  PODS 2007»
14 years 8 months ago
Monadic datalog over finite structures with bounded treewidth
Bounded treewidth and Monadic Second Order (MSO) logic have proved to be key concepts in establishing fixed-parameter tractability results. Indeed, by Courcelle's Theorem we ...
Georg Gottlob, Reinhard Pichler, Fang Wei
FOCS
2009
IEEE
14 years 2 months ago
Instance-Optimal Geometric Algorithms
We prove the existence of an algorithm A for computing 2-d or 3-d convex hulls that is optimal for every point set in the following sense: for every set S of n points and for ever...
Peyman Afshani, Jérémy Barbay, Timot...
IFIP
2009
Springer
14 years 2 months ago
Trusted Multiplexing of Cryptographic Protocols
Abstract. We present an analysis that determines when it is possible to multiplex a pair of cryptographic protocols. We present a transformation that improves the coverage of this ...
Jay A. McCarthy, Shriram Krishnamurthi
SOUPS
2009
ACM
14 years 2 months ago
Balancing usability and security in a video CAPTCHA
We present a technique for using content-based video labeling as a CAPTCHA task. Our CAPTCHAs are generated from YouTube videos, which contain labels (tags) supplied by the person...
Kurt Alfred Kluever, Richard Zanibbi
ISCAS
2006
IEEE
121views Hardware» more  ISCAS 2006»
14 years 2 months ago
Microelectromechanical systems in 3D SOI-CMOS: sensing electronics embedded in mechanical structures
— We discuss the design of CMOS MEMS in a 3D SOI-CMOS technology. We present layout architectures, preliminary mechanics modeling using finite element analysis and release proce...
Francisco Tejada, Andreas G. Andreou