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TCOM
2008
66views more  TCOM 2008»
15 years 6 months ago
Lattice codes for amplified direct-detection optical systems
Theories of shaping for lattice codes have been developed for systems (optical or non-optical) using coherent detection with additive white Gaussian noise (AWGN) and for direct-det...
Wei Mao, Joseph M. Kahn
JCSS
2007
88views more  JCSS 2007»
15 years 6 months ago
Counting lattice vectors
We consider the problem of counting the number of lattice vectors of a given length and prove several results regarding its computational complexity. We show that the problem is â™...
Denis Xavier Charles
JUCS
2007
86views more  JUCS 2007»
15 years 6 months ago
Improving LO Quality through Instructional Design Based on an Ontological Model and Metadata
: The activities developed in this paper were aimed at providing an awareness of the elements that should be considered in quality learning objects instructional design for elearni...
Erla Morales Morgado, Francisco José Garc&i...
COMBINATORICS
2004
76views more  COMBINATORICS 2004»
15 years 6 months ago
Geometrically Constructed Bases for Homology of Partition Lattices
Abstract. We use the theory of hyperplane arrangements to construct natural bases for the homology of partition lattices of types A, B and D. This extends and explains the "sp...
Anders Björner, Michelle L. Wachs
EXPERT
2000
182views more  EXPERT 2000»
15 years 6 months ago
Humanoid Robots: A New Kind of Tool
In 1993 our group at the MIT Artificial Intelligence Laboratory began a humanoid robotics project aimed at constructing a robot for use in exploring theories of human intelligence...
Bryan Adams, Cynthia Breazeal, Rodney A. Brooks, B...