Results 61 to 70 of about 1,394,604 (278)

Adaptive and occupancy-based channel selection for unreliable cognitive radio networks [PDF]

open access: yes, 2009
In this paper, we propose an adaptive and occupancy-based channel selection for unreliable cognitive radio ...
Fdida, Serge   +3 more
core   +2 more sources

Nonregenerative MIMO Relaying with Optimal Transmit Antenna Selection

open access: yes, 2008
We derive optimal SNR-based transmit antenna selection rules at the source and relay for the nonregenerative half duplex MIMO relay channel. While antenna selection is a suboptimal form of beamforming, it has the advantage that the optimization is ...
Heath Jr, Robert W., Peters, Steven W.
core   +1 more source

Volume Exclusion in Calcium Selective Channels [PDF]

open access: yesBiophysical Journal, 2008
Another research group has proposed an interesting model for calcium channel selectivity. However, on the basis of their reported results we find it impossible to assess the merits of their model because their results and claims concerning selectivity are based on an extrapolation over four orders of magnitude to low Ca(2+) concentration. Their results
Boda, Dezső;   +4 more
openaire   +2 more sources

Molecular bases of circadian magnesium rhythms across eukaryotes

open access: yesFEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source

Optimal Channel Selection Using Correlation Coefficient for CSP Based EEG Classification

open access: yesIEEE Access, 2020
In this paper, we present an optimal channel selection method to improve common spatial pattern (CSP) related features for motor imagery (MI) classification.
Yongkoo Park, Wonzoo Chung
doaj   +1 more source

Faithful qubit distribution assisted by one additional qubit against collective noise

open access: yes, 2005
We propose a distribution scheme of polarization states of a single photon over collective-noise channel. By adding one extra photon with a fixed polarization, we can protect the state against collective noise via a parity-check measurement and post ...
J. Shimamura   +5 more
core   +1 more source

Rough-Set-Based Color Channel Selection [PDF]

open access: yesIEEE Geoscience and Remote Sensing Letters, 2017
Color channel selection is essential for accurate segmentation of sky and clouds in images obtained from ground-based sky cameras. Most prior works in cloud segmentation use threshold based methods on color channels selected in an ad-hoc manner. In this letter, we propose the use of rough sets for color channel selection in visible-light images.
Soumyabrata Dev   +3 more
openaire   +2 more sources

Mechanisms of parasite‐mediated disruption of brain vessels

open access: yesFEBS Letters, EarlyView.
Parasites can affect the blood vessels of the brain, often causing serious neurological problems. This review explains how different parasites interact with and disrupt these vessels, what this means for brain health, and why these processes matter. Understanding these mechanisms may help us develop better ways to prevent or treat brain infections in ...
Leonor Loira   +3 more
wiley   +1 more source

Seeing the Unobservable: Channel Learning for Wireless Communication Networks

open access: yes, 2015
Wireless communication networks rely heavily on channel state information (CSI) to make informed decision for signal processing and network operations.
Deng, Ruichen   +3 more
core   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

open access: yesFEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

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