Results 81 to 90 of about 203,102 (303)

Adaptive Decomposition Level Selection for Wavelet-Based Dolphin Whistle Denoising Using PDF Similarity

IEEE Access
In passive acoustic monitoring, effective noise reduction of dolphin whistles is frequently compromised by ambient noise. A key challenge for wavelet-based denoising techniques lies in the selection of decomposition levels, where inappropriate choices ...
Jiali Chen, Peibin Zhu, Zhong Liu, Wen Chen, Xiaomei Xu, Yougan Chen   +5 more
doaj   +1 more source

Estimating traffic noise levels using acoustic monitoring: a preliminary study [PDF]

, 2016
In this paper, the Non-negative Matrix Factorization is applied for isolating the contribution of road traffic from acoustic measurements in urban sound mixtures. This method is tested on simulated scenes to enable a better control of the presence of different sound sources. The presented first results show the potential of the method.
Gloaguen, Jean-Rémy, Can, Arnaud, Lagrange, Mathieu, Petiot, Jean-François   +3 more
openaire   +1 more source

Monitoring of aircraft noise level on residents nearby Malaysian airport [PDF]

, 2021
Residents who live near airports are constantly exposed to harmful aircraft noise. This study investigates the effect of exposure to the aircraft noise on residents who live nearby the airport.
Nur Athirah, Badrulhisham
core  

T1 Over Squared Proton Density Ratio to Characterize Multiple Sclerosis Lesions

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Differentiating remyelinated from demyelinated lesions in MS remains challenging without histological confirmation. This study introduces the T1‐to‐PD2 ratio (TPR) imaging approach and evaluates its ability to characterize MS lesions alongside other quantitative MRI (qMRI) metrics. Methods Thirty individuals with MS (mean age: 47.5 ± 
Sarah J. Wright, Scotty G. McKay, Jean Ramos Bou, Fen Bao, Vivian B. Truong, Chenyang Li, Li Jiang, Anza B. Memon, E. Mark Haacke, Yulin Ge, Yongsheng Chen   +10 more
wiley   +1 more source

Does Long‐Term Lower Extremity Strength Training in Adults With Knee Osteoarthritis and Varus Alignment Reduce Knee Joint Loading During Gait?

Arthritis Care &Research, EarlyView.
Objective We examined whether 18 months of strength training in individuals with knee varus alignment and medial tibiofemoral osteoarthritis (OA) reduced knee joint loads during walking compared to an attention control group. Methods This study was a secondary analysis of a randomized clinical trial that compared the effects of strength training to a ...
Stephen P. Messier, Matthew N. Vigliotti, Paige E. Rice, Brian Pietrosimone, Shannon L. Mihalko, Edward H. Ip, Richard F. Loeser, David J. Hunter, Ali Guermazi, Ryan Hill, Santiago Saldana, Kim L. Bennell, Paul DeVita   +12 more
wiley   +1 more source

Maximum pass-by noise levels from vehicles in real road traffic streams: comparison to modeled levels and measurement protocol issues

, 2011
The noise signal from an individual vehicle or succession/platoon of vehicles within a road traffic stream is highly variable and in reality identifying a representative sample of the population of the noise level maxima of vehicle pass-by for the range ...
Schreurs, E, Tomerini, D, Brown, L
core  

Adaptive Observer for Coupled Wave PDE and Infinite ODE With Sampled Data and Unknown Input: Application to Brain Hemodynamics Estimation

International Journal of Adaptive Control and Signal Processing, EarlyView.
This article proposes a convergent adaptive observer for a damped wave PDE and an infinite‐dimensional ODE coupled in cascade using sampled‐in‐space ODE state measurements. The proposed observer estimates the distributed states of the PDE and ODE along with unknown PDE parameters and spatial input.
Zehor Belkhatir, Sarah Mechhoud, Taous‐Meriem Laleg‐Kirati   +2 more
wiley   +1 more source

Noise exposure of care providers during otosurgical procedures

B-ENT, 2013
Noise exposure of care providers during otosurgical procedures. Objective: To monitor the noise exposure of care providers during otological surgery due to drilling and suction in the operating room.
N. Verhaert, N. Moyaert, L. Godderis, F. Debruyne, C. Desloovere, H. Luts   +5 more
doaj   +2 more sources

Planar Solid‐State Nanopores Toward Scalable Nanofluidic Integration Based on CMOS Technology

Advanced Engineering Materials, EarlyView.
We present a scalable silicon‐based fabrication strategy for planar solid‐state nanopores to enable their integration with complex nanofluidic systems. Prototype devices demonstrate normal voltage‐current characteristics, good noise performance, and appreciable streaming currents. Our CMOS‐compatible fabrication process offers precise geometric control
Ngan Hoang Pham, Chenyu Wen, Mohammad Hadi Khaksaran, Won‐Yong Lee, Javier Cruz, Klas Hjort, Dongping Wu, Shi‐Li Zhang   +7 more
wiley   +1 more source

Aquatic Acoustic Metrics Interface Utility for Underwater Sound Monitoring and Analysis

Sensors, 2012
Fishes and marine mammals may suffer a range of potential effects from exposure to intense underwater sound generated by anthropogenic activities such as pile driving, shipping, sonars, and underwater blasting.
Thomas J. Carlson, Michele B. Halvorsen, Zhiqun Daniel Deng, Huiying Ren   +3 more
doaj   +1 more source