Results 71 to 80 of about 95,587 (363)

Knowledge and attitudes of teachers regarding the impact of classroom acoustics on speech perception and learning

South African Journal of Communication Disorders, 2009
This study investigated the knowledge and attitude of primary school teachers regarding the impact of poor classroom acoustics on learners’ speech perception and learning in class.
Lebogang Ramma
doaj   +1 more source

AGN Black Hole Masses and Bolometric Luminosities [PDF]

, 2002
Black hole mass, along with mass accretion rate, is a fundamental property of active galactic nuclei. Black hole mass sets an approximate upper limit to AGN energetics via the Eddington limit. We collect and compare all AGN black hole mass estimates from
C. Megan Urry, Di Nella H., Dibai E. A., Dondi L., Jong‐Hak Woo, Jorgensen I., Krolik J. H.., Mas-Hesse J. M., Oliva E., Oliva E., Padovani P., Taylor G. L.   +11 more
core   +3 more sources

A deep learning algorithm to increase intelligibility for hearing-impaired listeners in the presence of a competing talker and reverberation.

Journal of the Acoustical Society of America, 2019
For deep learning based speech segregation to have translational significance as a noise-reduction tool, it must perform in a wide variety of acoustic environments.
Eric W. Healy, Masood Delfarah, Eric M Johnson, Deliang Wang   +3 more
semanticscholar   +1 more source

3D MRI Tract‐Specific Spinal Cord Lesion Pattern Improves Prediction of Distinct Neurological Recovery

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To distinguish lateralized motor‐ and sensory‐tract damage after acute spinal cord injury (SCI) and explore its predictive power for motor and sensory recovery. Methods Thirty‐five SCI patients (two female) from a multi‐center data set (placebo‐arm of the Nogo‐A‐Inhibition in SCI trial) underwent routine T2‐weighted sagittal MRI ...
Lynn Farner, Tim M. Emmenegger, Simon Schading‐Sassenhausen, Julia Berroth, Maryam Seif, Armin Curt, Patrick Freund, The Nogo Inhibition in Spinal Cord Injury Study Group   +7 more
wiley   +1 more source

Reverberation Mapping of High-z, High-luminosity Quasars

, 2018
We present Reverberation Mapping results after monitoring a sample of 17 high-z, high-luminosity quasars for more than 10 years using photometric and spectroscopic capabilities.
Hagai Netzer, Hagai Netzer, Ismael Botti, Paulina Lira, Shai Kaspi   +4 more
core   +2 more sources

NGC 5548 in a Low-Luminosity State: Implications for the Broad-Line Region [PDF]

, 2007
We describe results from a new ground-based monitoring campaign on NGC 5548, the best studied reverberation-mapped AGN. We find that it was in the lowest luminosity state yet recorded during a monitoring program, namely L(5100) = 4.7 x 10^42 ergs s^-1 ...
Berezin V. Y., Bradley M. Peterson, Cackett E. M., Charles Kuehn, Christopher A. Onken, Douglas O. Richstone, Edward M. Cackett, Himel Ghosh, Jeffrey K. J. Fogel, Keith D. Horne, Kelly D. Denney, Marianne Vestergaard, Matthew G. Walker, Matthias Dietrich, Misty C. Bentz, Richard W. Pogge, Sergey G. Sergeev, Takeo Minezaki, Vladimir I. Pronik, Yoshii Y., Yuzuru Yoshii   +20 more
core   +5 more sources

Estimation of the Area of a Reverberant Plate Using Average Reverberation Properties

Physics Procedia, 2015
This paper aims to present an original method for the estimation of the area of thin plates of arbitrary geometrical shapes. This method relies on the acquisition and ensemble processing of reverberated elastic signals on few sensors. The acoustical Green's function in a reverberant solid medium is modeled by a nonstationary random process based on the
Achdjian, Hossep, Moulin, Emmanuel, Benmeddour, Farouk, Assaad, Jamal   +3 more
openaire   +3 more sources

Reverberation Chambers for Over-the-Air Tests: An Overview of Two Decades of Research

IEEE Access, 2018
The reverberation chamber (RC) has traditionally been used for electromagnetic compatibility tests. About two decade ago, it found application in various over-the-air (OTA) tests of antennas and wireless devices.
Xiaoming Chen, Jiazhi Tang, Teng Li, Shitao Zhu, Yuxin Ren, Zhihua Zhang, A. Zhang   +6 more
semanticscholar   +1 more source

The MSA Atrophy Index (MSA‐AI): An Imaging Marker for Diagnosis and Clinical Progression in Multiple System Atrophy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Reliable biomarkers are essential for tracking disease progression and advancing treatments for multiple system atrophy (MSA). In this study, we propose the MSA Atrophy Index (MSA‐AI), a novel composite volumetric measure to distinguish MSA from related disorders and monitor disease progression. Methods Seventeen participants with an
Paula Trujillo, Kilian Hett, Amy Cooper, Amy E. Brown, Jessica Iregui, Manus J. Donahue, M. Erik Landman, Italo Biaggioni, Margaret Bradbury, Cynthia Wong, David Stamler, Daniel O. Claassen   +11 more
wiley   +1 more source

ASTROMETRIC REVERBERATION MAPPING [PDF]

The Astrophysical Journal, 2012
ApJ in ...
openaire   +4 more sources