Results 11 to 20 of about 1,722,338 (297)

Information capacity in the weak-signal approximation [PDF]

open access: yesPhysical Review E, 2010
We derive an approximate expression for mutual information in a broad class of discrete-time stationary channels with continuous input, under the constraint of vanishing input amplitude or power.
F. Rieke   +16 more
core   +3 more sources

A NOVEL APPROACH TO WEAK SIGNAL PROCESSING [PDF]

open access: yesInformation and Telecommunication Sciences, 2013
A novel effective approach to weak continuous and digital signals processing in communication channels with high noise levels is proposed and investigated. The essence of proposed approach is illustrated by examples of various electronic devices.
Oleksandr Makarenko, Oleksiy Melnichuk
doaj   +3 more sources

Coreceptors and TCR Signaling – the Strong and the Weak of It [PDF]

open access: yesFrontiers in Cell and Developmental Biology, 2020
The T-cell coreceptors CD4 and CD8 have well-characterized and essential roles in thymic development, but how they contribute to immune responses in the periphery is unclear. Coreceptors strengthen T-cell responses by many orders of magnitude - beyond a million-fold according to some estimates - but the mechanisms underlying these effects are still ...
Alexander M. Mørch   +8 more
openaire   +3 more sources

Improvements on SCORE, Especially for Weak Signals [PDF]

open access: yesSankhya A, 2021
A network may have weak signals and severe degree heterogeneity, and may be very sparse in one occurrence but very dense in another. SCORE (Jin, 2015) is a recent approach to network community detection. It accommodates severe degree heterogeneity and is adaptive to different levels of sparsity, but its performance for networks with weak signals is ...
Jin, Jiashun   +2 more
openaire   +2 more sources

Analysis and Discussion of Some Key Technical Problems for LWD Ultra-Deep Electromagnetic Resistivity Logging

open access: yesCejing jishu, 2023
Ultra-deep electromagnetic resistivity logging technique and tools are currently the research hotspot of LWD. The look-around DOD (Distance of Detection), look-ahead DOD and the bed boundary resolution are important technical specifications of these type
JIN Ding, ZHU Jun, ZHOU John
doaj   +1 more source

Research on Weak Signal Feature Extraction Method of Rolling Bearing Based on Refined Composite Multi-Scale Weighted Entropy

open access: yesMachines, 2022
Rolling bearing health status monitoring is essential for identifying early failures and avoiding un-planned downtime in industrial systems. To overcome the problems of existing entropy methods with multiple faults that are easily confounded at different
Di Xu   +5 more
doaj   +1 more source

A Novel Sensor Prototype with Enhanced and Adaptive Sensitivity Based on Negative Stiffness Mechanism

open access: yesSensors, 2020
Loess–mudstone/soil-rock interfacial landslide is one of the prominent landslide hazards that occurs in soil rock contacting zones. It is necessary to develop sensors with high sensitivity to weak and low frequency vibrations for the early warning of ...
Lijun Liu, Yongzhong Nie, Ying Lei
doaj   +1 more source

Academic Topics Related to Household Energy Consumption Using the Future Sign Detection Technique

open access: yesEnergies, 2021
With the emergence of new technologies and policies to transition to clean energy, the household energy consumption sector is also changing. In response to policy, environmental, and technical changes, researchers need to find out what significant issues
Minkyu Kim, Chankook Park
doaj   +1 more source

Weak Signal Processing Method for Moving Target of GNSS-S Radar Based on Amplitude and Phase Self-Correction

open access: yesRemote Sensing, 2023
Navigation satellite signals have the advantages of all-day, all-weather, and global coverage, and the use of navigation signals for the detection of moving targets has significant application prospects.
Wenning Gao   +10 more
doaj   +1 more source

Parameter estimation of weak space‐based ADS‐B signals using genetic algorithm

open access: yesETRI Journal, 2020
Space‐based automatic dependent surveillance‐broadcast (ADS‐B) is an important emerging augmentation of existing ground‐based ADS‐B systems. In this paper, the problem of space‐based ultra‐long‐range reception processing of ADS‐B signals is described. We
Feng Tao, Liang Jun
doaj   +1 more source

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