Collective Thomson scattering measurements with high frequency resolution at TEXTOR

2010 ◽  
Vol 81 (10) ◽  
pp. 10D515 ◽  
Author(s):  
M. Stejner ◽  
S. K. Nielsen ◽  
S. B. Korsholm ◽  
M. Salewski ◽  
H. Bindslev ◽  
...  
Keyword(s):  
High Frequency ◽  
Thomson Scattering ◽  
Frequency Resolution ◽  
Scattering Measurements ◽  
Collective Thomson Scattering

scholarly journals Comparison of fast ion collective Thomson scattering measurements at ASDEX Upgrade with numerical simulations

2010 ◽  
Vol 50 (3) ◽  
pp. 035012 ◽  
Author(s):  
M. Salewski ◽  
F. Meo ◽  
M. Stejner ◽  
O. Asunta ◽  
H. Bindslev ◽  
...  
Keyword(s):  
Numerical Simulations ◽  
Thomson Scattering ◽  
Scattering Measurements ◽  
Collective Thomson Scattering ◽  
Fast Ion

scholarly journals Improved Collective Thomson Scattering measurements of fast ions at ASDEX upgrade

2014 ◽  
Author(s):  
J. Rasmussen ◽  
S. K. Nielsen ◽  
M. Stejner ◽  
M. Salewski ◽  
A. S. Jacobsen ◽  
...  
Keyword(s):  
Thomson Scattering ◽  
Fast Ions ◽  
Scattering Measurements ◽  
Collective Thomson Scattering

scholarly journals Collective Thomson scattering measurements of fast-ion transport due to sawtooth crashes in ASDEX Upgrade

2016 ◽  
Vol 56 (11) ◽  
pp. 112014 ◽  
Author(s):  
J. Rasmussen ◽  
S.K. Nielsen ◽  
M. Stejner ◽  
J. Galdon-Quiroga ◽  
M. Garcia-Munoz ◽  
...  
Keyword(s):  
Ion Transport ◽  
Thomson Scattering ◽  
Scattering Measurements ◽  
Sawtooth Crashes ◽  
Collective Thomson Scattering ◽  
Fast Ion

scholarly journals Mitigation of EC breakdown in the gyrotron transmission line of the ITER Collective Thomson Scattering diagnostic via a Split Biased Waveguide

2019 ◽  
Vol 14 (11) ◽  
pp. C11009-C11009 ◽  
Author(s):  
A.W. Larsen ◽  
S.B. Korsholm ◽  
B. Gonçalves ◽  
H.E. Gutierrez ◽  
E. Henriques ◽  
...  
Keyword(s):  
Transmission Line ◽  
Thomson Scattering ◽  
Collective Thomson Scattering ◽  
Thomson Scattering Diagnostic

scholarly journals Evaluation of working memory in relation to cochlear implant consonant speech discrimination

2021 ◽  
Vol 37 (1) ◽  
Author(s):  
Mai M. El Ghazaly ◽  
Mona I. Mourad ◽  
Nesrine H. Hamouda ◽  
Mohamed A. Talaat
Keyword(s):  
Working Memory ◽  
Speech Perception ◽  
High Frequency ◽  
Word List ◽  
Frequency Discrimination ◽  
Frequency Resolution ◽  
Speech Discrimination ◽  
Place Of Articulation ◽  
Strong Positive Relationship ◽  
Speech And Language Development

Abstract Background Speech perception in cochlear implants (CI) is affected by frequency resolution, exposure time, and working memory. Frequency discrimination is especially difficult in CI. Working memory is important for speech and language development and is expected to contribute to the vast variability in CI speech reception and expression outcome. The aim of this study is to evaluate CI patients’ consonants discrimination that varies in voicing, manner, and place of articulation imparting differences in pitch, time, and intensity, and also to evaluate working memory status and its possible effect on consonant discrimination. Results Fifty-five CI patients were included in this study. Their aided thresholds were less than 40 dBHL. Consonant speech discrimination was assessed using Arabic consonant discrimination words. Working memory was assessed using Test of Memory and Learning-2 (TOMAL-2). Subjects were divided according to the onset of hearing loss into prelingual children and postlingual adults and teenagers. Consonant classes studied were fricatives, stops, nasals, and laterals. Performance on the high frequency CVC words was 64.23% ± 17.41 for prelinguals and 61.70% ± 14.47 for postlinguals. These scores were significantly lower than scores on phonetically balanced word list (PBWL) of 79.94% ± 12.69 for prelinguals and 80.80% ± 11.36 for postlinguals. The lowest scores were for the fricatives. Working memory scores were strongly and positively correlated with speech discrimination scores. Conclusions Consonant discrimination using high frequency weighted words can provide a realistic tool for assessment of CI speech perception. Working memory skills showed a strong positive relationship with speech discrimination abilities in CI.

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