Results 31 to 40 of about 1,475,822 (289)

Channel estimation and IQ imbalance compensation for OFDM signal

open access: yes, 2022
In digital communication, a pilot is a known sequence in each signal frame. It is used for frame synchronization, as well as for channel estimation.
Jing, Jiasheng
core  

Essays on Channel Deletion and Channel Contraction [PDF]

open access: yes, 2022
With the advent of online, mobile, and social media channels, firms have an array of channels in their channel mix. The proliferation of channels has increased marketing costs and may be detrimental to a firm’s competitive position.
Kumar, Binay
core   +1 more source

Polarimetric Calibration for Ground-based Synthetic Aperture Radar based on Point Target Approach

open access: yesJurnal Elkomika
ABSTRAK Kalibrasi polarimetri (PolCal) dari citra radar aperture sintetis berbasis darat (GB SAR) sangat penting dalam aplikasi analisis spasial empiris.
NURUL CHASANAH   +5 more
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Diversity and complexity in neural organoids

open access: yesFEBS Letters, EarlyView.
Neural organoid research aims to expand genetic diversity on one side and increase tissue complexity on the other. Chimeroids integrate multiple donor genomes within single organoids. Self‐organising multi‐identity organoids, exogenous cell seeding, or enforced assembly of region‐specific organoids contribute to tissue complexity.
Ilaria Chiaradia, Madeline A. Lancaster
wiley   +1 more source

AMHC-DTENet: Attention-Based Multipath Hybrid Convolutional Distribution Target Extraction Network for Polarimetric Channel Imbalance Assessment

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
Manual selection of the distribution target and determination of its spatial location is not only time consuming but also has a serious impact on the polarimetric channel imbalances assessment if the area is incorrect.
Haoyang Li   +3 more
doaj   +1 more source

Balance and imbalance in dark and bright (OFF and ON) visual channels

open access: yesScientific Reports
Abstract The visual system uses separate neuron channels to distinguish figures that are darker or brighter than their background. We displayed letters as dark and/or bright pulses, with pulse energy scaled as a function of background energy, and assessed the probability of letter recognition as a function of pulse energy and polarity.
Greene, Ernest, Morrison, Jack
openaire   +2 more sources

Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation

open access: yesFEBS Letters, EarlyView.
Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz   +11 more
wiley   +1 more source

Understanding the key drivers of and technology related issues associated with going multi-channel [PDF]

open access: yes, 2012
A multi-channel retail strategy is viewed by many academics and practitioners to be the success model for most retailers. Yet, while there are many drivers of, and advantages related to, using multiple channels to sell products and services to customers ...
Whysall, P   +5 more
core  

Organizing the interface—Plasma membrane architecture and receptor dynamics in virus‐cell interactions

open access: yesFEBS Letters, EarlyView.
Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley   +1 more source

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