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CPHYSICS
2004
54views more  CPHYSICS 2004»
15 years 6 months ago
Self-gravitational collapse of a magnetized cloud core: high resolution simulations with three-dimensional MHD nested grid
We investigate self-gravitational collapse of magnetized molecular cloud cores and formation of the outflow. We employ a nested grid in order to resolve fine structures of protost...
Tomoaki Matsumoto, Masahiro N. Machida, Kohji Tomi...
ICFP
2005
ACM
16 years 6 months ago
Modular verification of concurrent assembly code with dynamic thread creation and termination
Proof-carrying code (PCC) is a general framework that can, in principle, verify safety properties of arbitrary machine-language programs. Existing PCC systems and typed assembly l...
Xinyu Feng, Zhong Shao
ASIACRYPT
2009
Springer
16 years 1 months ago
Smooth Projective Hashing and Password-Based Authenticated Key Exchange from Lattices
Abstract. We describe a public-key encryption scheme based on lattices — specifically, based on the hardness of the learning with error (LWE) problem — that is secure against ...
Jonathan Katz, Vinod Vaikuntanathan
CISS
2008
IEEE
16 years 1 months ago
Improved bounds for a deterministic sublinear-time Sparse Fourier Algorithm
—This paper improves on the best-known runtime and measurement bounds for a recently proposed Deterministic sublinear-time Sparse Fourier Transform algorithm (hereafter called DS...
Mark A. Iwen, Craig V. Spencer
FOCS
2008
IEEE
16 years 1 months ago
Almost-Natural Proofs
Razborov and Rudich have shown that so-called natural proofs are not useful for separating P from NP unless hard pseudorandom number generators do not exist. This famous result is...
Timothy Y. Chow