Results 311 to 320 of about 3,122,392 (352)
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WHEN IS A CHANNEL NOT A CHANNEL?
Journal of Experimental Biology, 2004![Figure][1] Most physiologists would not have too much difficulty describing the difference between a channel and a transporter. A channel is a hydrophilic pore through a membrane, which can let through many thousands of ions each time it opens.
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MIMO Broadcast Channels with Channel Estimation
2007 IEEE International Conference on Communications, 2007We consider a multi-user MIMO downlink where the transmitter has only estimates of the channel while the receivers have perfect channel information. The impact of channel estimation error on the sum rate is studied. It is shown that the sum rate saturates due to the inaccurate channel information.
Jun Shi 0001, Minnie Ho
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Retailer's channel structure choice: Online channel, offline channel, or dual channels?
International Journal of Production Economics, 2017Abstract Extensive research has been done on a manufacturer's channel structure choice. In this paper, we study a retailer's channel structure choice and pricing decisions in a supply chain with a manufacturer and a retailer. To this end, we first derive the manufacturer's optimal wholesale price and the retailer's optimal retail price(s) under all ...
Peng Zhang +2 more
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Channel capacities of fading radio channels
Proceedings of PIMRC '96 - 7th International Symposium on Personal, Indoor, and Mobile Communications, 2002Channel capacities of various channel models are investigated. We consider two frequency selective channels, the indoor radio channel, simulated with ray tracing, and the two path channel. Additionally Rayleigh-, Rice- and Nakagami-m-distributed stochastic channel models and the discrete-time additive Gaussian noise channel with binomial distributed ...
Thomas Huschka +2 more
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Atmospheric Channel, Channel Estimation, and Channel Equalization
2022Xizheng Ke, Ke Dong
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Calcium channels and calcium channel antagonists
Annals of Neurology, 1987AbstractChanges in free intracellular Ca2+ levels provide signals that allow nerve and muscle cells to respond to a host of external stimuli. A major mechanism for elevating the level of intracellular Ca2+ is the influx of extracellular Ca2+ through voltage‐dependent channels in the cell membrane.
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Channels wars: return of the single‐channel
The Journal of Physiology, 2023Aimée Obolari Durço +2 more
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Terahertz Wireless Channels: A Holistic Survey on Measurement, Modeling, and Analysis
IEEE Communications Surveys and Tutorials, 2022Yi Chen +2 more
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STINGing through the membrane to channel protons
Nature Reviews Molecular Cell Biology, 2023Lisa Heinke
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Piezos thrive under pressure: mechanically activated ion channels in health and disease
Nature Reviews Molecular Cell Biology, 2017Swetha E Murthy +2 more
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