5350 search results - page 891 / 1070 » Space and time in eco-ontologies |
167
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CORR
2007
Springer
15 years 6 months ago
2007
Springer
It is well known that Space-Time Block Codes (STBCs) obtained from Orthogonal Designs (ODs) are singlesymbol-decodable (SSD) and from Quasi-Orthogonal Designs (QODs) are double-sy...
169
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JCM
2008
15 years 6 months ago
2008
We compare four open-loop transmit diversity schemes in a coded Orthogonal Frequency Division Multiplexing (OFDM) system with four transmit antennas, namely cyclic shift diversity ...
188
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JDCTA
2008
15 years 6 months ago
2008
In WSNs, since the attacks, such as jamming or eavesdropping without physical access, easily occur, security is one of the important requirements for WSNs. The key pre-distributio...
171
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JAIR
2006
15 years 6 months ago
2006
In this paper we propose a data intensive approach for inferring sentence-internal temporal relations. Temporal inference is relevant for practical NLP applications which either e...
155
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JASIS
2006
15 years 6 months ago
2006
Encouraged by a significant improvement over LSI (latent semantic indexing) approach in textual information retrieval of the DLSI (differential latent semantic indexing) approach ...