Results 91 to 100 of about 95,587 (363)

Study of reverberation pattern and its cancellation method in shallow water [PDF]

open access: yesTheoretical and Applied Mechanics, 2007
In shallow water, the primary limitation of the performance of active sonar is the reverberation that originates from volume and boundaries scattering as well as multi-path propagation. There­fore, reverberation cancelation is an important research topic
Yang Shiuh-Kuang   +2 more
doaj   +1 more source

Moderate Reverberation Does Not Increase Subjective Fatigue, Subjective Listening Effort, or Behavioral Listening Effort in School-Aged Children

open access: yesFrontiers in Psychology, 2019
Background noise and reverberation levels in typical classrooms have negative effects on speech recognition, but their effects on listening effort and fatigue are less well understood.
Erin M. Picou   +4 more
semanticscholar   +1 more source

Quantitative Iron Measurements in the Basal Ganglia of NBIA Patients Using QSM: Insights From a Tertiary Center

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Neurodegeneration with brain iron accumulation (NBIA) comprises rare genetic disorders characterized by predominantly extrapyramidal symptoms and iron deposition in the basal ganglia. Conventional magnetic resonance imaging (MRI) detects qualitative changes but cannot accurately quantify iron accumulation. Quantitative susceptibility
Özge Uygun   +19 more
wiley   +1 more source

Reverberation times and reverberation levels

open access: yesArchives of Acoustics, 2015
Reverberation times and reverberation levels are the statistical parameters of the stochastical sound field in a room. Their theoretically derived and practically measured properties are discussed.
V. M. A. PEUTZ
doaj  

Stacked reverberation mapping [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society: Letters, 2013
Abstract Over the past 20 years reverberation mapping has proved one of the most successful techniques for studying the local (<1 pc) environment of supermassive black holes that drive active galactic nuclei. Key successes of reverberation mapping have been direct black hole mass estimates, the radius–luminosity relation for the ...
Fine, Stephen   +11 more
openaire   +3 more sources

The percept of reverberation is not affected by visual room impression in virtual environments.

open access: yesJournal of the Acoustical Society of America, 2019
Humans possess mechanisms to suppress distracting early sound reflections, summarized as the precedence effect. Recent work shows that precedence is affected by visual stimulation.
Michael Schutte, S. Ewert, L. Wiegrebe
semanticscholar   +1 more source

Plasma Glial Fibrillary Acidic Protein Correlates With Brain Metal Burden in Wilson's Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Neuroinflammation driven by extracellular copper contributes to neuronal damage in Wilson's disease (WD). This study investigated the relationship between brain metal burden and peripheral neuroinflammation markers in WD. Methods We conducted a cross‐sectional study involving 89 participants, including patients with WD (n = 63 ...
Sung‐Pin Fan   +12 more
wiley   +1 more source

Study on Doppler characteristics of underwater bistatic reverberation [PDF]

open access: yesMATEC Web of Conferences, 2019
Active sonar has two typical types of geometry configuration respectively named monostatic and bistatic like a radar system. In the monostatic scenario, co-located underwater transducers transmit and receive sound energy, while in a bistatic situation ...
Wang Fangyong   +2 more
doaj   +1 more source

The Lick AGN Monitoring Project 2011: Reverberation Mapping of Markarian 50 [PDF]

open access: yes, 2011
The Lick AGN Monitoring Project 2011 observing campaign was carried out over the course of 11 weeks in spring 2011. Here we present the first results from this program, a measurement of the broad-line reverberation lag in the Seyfert 1 galaxy Mrk 50 ...
Barth, Aaron J., Walters, Richard
core  

MgII Line Variability of High Luminosity Quasars

open access: yes, 2008
We monitored five high-luminosity quasars with lambda L_{3000A} > 10^45 erg s^-1 at 0.4 < z < 0.6 to measure flux variability of the MgII 2798 line and explore feasibility of reverberation mapping using MgII. Over the two year monitoring program, imaging
Jong-Hak Woo, Maza, Maza, Maza, Webb
core   +1 more source

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