Results 41 to 50 of about 2,116,335 (302)

The effect of AM noise on correlation phase-noise measurements [PDF]

open access: yesIEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2007
We analyze the phase-noise measurement methods in which correlation and averaging is used to reject the background noise of the instrument. All the known methods make use of a mixer, used either as a saturated phase detector or as a linear synchronous detector. Unfortunately, AM noise is taken in through the power-to-dc-offset conversion mechanism that
Rubiola, Enrico, Boudot, Rodolphe
openaire   +4 more sources

Acoustical barriers in classrooms: the impact of noise on performance in the classroom [PDF]

open access: yes, 2006
There is general concern about the levels of noise that children are exposed to in classroom situations. We report the results of a study that explores the effects of typical classroom noise on the performance of primary school children on a series of ...
Dockrell, Julie, Shield, Bridget
core   +2 more sources

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

open access: yesFEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

Effects of Noise Type and Noise Sensitivity on Working Memory and Noise Annoyance

open access: yesNoise and Health, 2022
Objective: This study explored the interaction between environment and behavior and analyzed the effect of physical environment stimuli and individual differences on environmental perception. Methods: We investigated the effects of two kinds of noise sensitivities (high sensitivity ...
Chen Song   +4 more
openaire   +3 more sources

Effects of Noise on Entropy Evolution

open access: yes, 2005
We study the convergence properties of the conditional (Kullback-Leibler) entropy in stochastic systems. We have proved very general results showing that asymptotic stability is a necessary and sufficient condition for the monotone convergence of the ...
Abbondandolo   +27 more
core   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

Detrimental effects of noise on anaesthetists [PDF]

open access: yesCanadian Journal of Anaesthesia, 1995
To study the detrimental effects of operating room noise, noise levels in operating rooms were first measured and the average noise level was calculated in Decibels, which was 77.32 dB(A). An audiocassette of 90 min duration was prepared recording the operating room noise.
V S, Murthy   +3 more
openaire   +2 more sources

The effects of environmental and classroom noise on the academic attainments of primary school children [PDF]

open access: yes, 2008
While at school children are exposed to various types of noise including external, environmental noise and noise generated within the classroom. Previous research has shown that noise has detrimental effects upon children?s performance at school ...
Dockrell, Julie, Shield, Bridget
core   +1 more source

Lyapunov Exponents of Two Stochastic Lorenz 63 Systems [PDF]

open access: yes, 2019
Two different types of perturbations of the Lorenz 63 dynamical system for Rayleigh-Benard convection by multiplicative noise -- called stochastic advection by Lie transport (SALT) noise and fluctuation-dissipation (FD) noise -- are found to produce ...
Geurts, Bernard J.   +2 more
core   +3 more sources

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