Results 181 to 190 of about 2,493 (227)

Riemannian Embedding Banks for Common Spatial Patterns with EEG-based SPD Neural Networks

Proceedings of the AAAI Conference on Artificial Intelligence, 2021
Modeling non-linear data as symmetric positive definite (SPD) matrices on Riemannian manifolds has attracted much attention for various classification tasks. In the context of deep learning, SPD matrix-based Riemannian networks have been shown to be a promising solution for classifying electroencephalogram (EEG) signals, capturing the Riemannian ...
Yoon-Je Suh, Byung Hyung Kim
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Simultaneous Design of FIR Filter Banks and Spatial Patterns for EEG Signal Classification

IEEE Transactions on Biomedical Engineering, 2013
The spatial weights for electrodes called common spatial pattern (CSP) are known to be effective in EEG signal classification for motor imagery-based brain-computer interface (MI-BCI). To achieve accurate classification in CSP, it is necessary to find frequency bands that relate to brain activities associated with BCI tasks.
Hiroshi Higashi, Toshihisa Tanaka 0001
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Spatial patterns of benthic megahabitats and conservation planning in the Abrolhos Bank

Continental Shelf Research, 2013
Abstract Application of sidescan sonar at the regional scale of the Abrolhos Bank, with ground-truthing by remotely operated vehicles and mixed-gas diving operations, revealed a much more complex habitat mosaic than previously recognized. The regional benthic habitat map indicates 8844 km2 of reefs (earlier estimates from remote sensing were around ...
Rodrigo Leão Moura, Nélio Augusto Secchin, Gilberto Menezes Amado-Filho, Ronaldo Bastos Francini-Filho, Matheus Oliveira Freitas, Carolina Viviana Minte-Vera, João Batista Teixeira, Fabiano Lopes Thompson, Guilherme Fraga Dutra, Paulo Yukio Gomes Sumida, Arthur Zigliatti Guth, Rubens Mendes Lopes, Alex Cardoso Bastos   +12 more
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Changes in the spatial pattern of the seed bank in a semiarid sandy grassland

Acta Botanica Hungarica, 2003
The survey was carried out on the seed bank of several patches of an open, semiarid sandy grassland (Festucetum vaginatae Rapaics ex Soo 1929 (Borhidi 1996)).
Kemény, G., Nagy, Z., Tuba, Z.
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Spatial Filter Bank based on Probabilistic Common Spatial Pattern in Motor Imagery BCI systems

2016 23rd Iranian Conference on Biomedical Engineering and 2016 1st International Iranian Conference on Biomedical Engineering (ICBME), 2016
Recently, Motor Imagery (MI) based on Brain Computer Interface (BCI) systems have been noticed for neuro-rehabilitation methods. The challenging key is to correct detection of MI tasks. Probabilistic Common Spatial Pattern (P-CSP) is the most recent and efficient method for discriminating two classes of electroencephalogram (EEG) from Motor Imagery (MI)
Asghar Zarei, Farnaz Ghassemi
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Spatial patterns in seed bank and vegetation of semi-natural mountain meadows

Plant Ecology, 2006
This work has been performed as part of project CE AIR-CT92 –0079.
Reiné, Ramón, Chocarro, Cristina, Fillat, Federico   +2 more
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Spatial and Temporal Patterns in the Seed Bank and Vegetation of a Desert Grassland Community

The Journal of Ecology, 1988
SUMMARY (1) Plant and seed temporal and spatial patterns, and the correlation between vegetation and seed bank were examined from 150 samples collected from an 8-ha site in a desert grassland community in north-central New Mexico, U.S.A. (2) Total plant cover increased through the growing season, but relative cover of all species except three annuals ...
C. B. Henderson, K. E. Petersen, R. A. Redak   +2 more
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Nested spatial patterns in seed bank and vegetation of Mediterranean old‐fields

Journal of Vegetation Science, 1991
AbstractA nested sampling design was used to describe the spatial patterns for the species richness and composition in the seed bank and vegetation of three Mediterranean old‐fields (1, 7, and 15 yr after the last ploughing). Three scales were examined hierarchically: sampling units within plots of 0.25 m2 for the vegetation and of 0.05 m2 for the seed
S. Lavorel, J. D. Lebreton, M. Debussche, J. Lepart   +3 more
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Spatial patterns of the germinable soil seed bank in northern Patagonia

Seed Science Research, 1998
AbstractThe spatial variation of the soil seed bank in the steppe ofLarrea divaricataandStipaspp. was evaluated in relation to the spatial pattern of the established vegetation, over two years. Plant distribution was expected to affect the spatial pattern of the soil seed bank.
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Spatial Pattern Analysis of Seed Banks: An Improved Method and Optimized Sampling

Ecology, 1988
Analysis of spatial pattern of the seed bank of an old field in Maryland showed that the seed bank was composed primarily of annual and short—lived perennial species. Tree and shrub species were poorly represented. Seed abundance decreased with depth in the soil. The seeds of all species generally had clustered distributions in the soil. However, there
Douglas W. Bigwood, David W. Inouye
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