Theoretical and experimental performance evaluations of Picoframe framing cameras

1991 ◽  
Author(s):  
David R. Walker ◽  
Wilson Sibbett ◽  
Yueping Liu
Keyword(s):  
Performance Evaluations ◽  
Experimental Performance

Two-layered electromagnetic wave-absorbing E-glass/epoxy plain weave composites containing carbon nanofibers and NiFe particles

2011 ◽  
Vol 45 (26) ◽  
pp. 2773-2781 ◽  
Author(s):  
Ki-Yeon Park ◽  
Jae-Hung Han ◽  
Jin-Bong Kim ◽  
Sang-Kwan Lee
Keyword(s):  
Electromagnetic Wave ◽  
Carbon Nanofibers ◽  
Performance Evaluations ◽  
Experimental Performance ◽  
Plain Weave ◽  
X Band ◽  
Parametric Studies ◽  
Lossy Materials ◽  
Absorption Characteristics ◽  
Ku Band

Two-layered radar-absorbing structures (RASs) were investigated for the broadband absorbing characteristics for the X-band (8.2–12.4 GHz) and Ku-band (12.0–18.0 GHz). E-glass/epoxy plain weave composites containing carbon nanofibers (CNFs) and submicron NiFe particles were fabricated and their complex permittivities and permeabilities measured in the range 2–18 GHz. The surface and absorbing layers of two-layered RASs consisted of the low and high lossy materials, respectively. Six kinds of two-layered RASs were designed through the parametric studies. The three kinds of specimens with wide absorption characteristics were selected for the experimental performance evaluations, and their results showed very broad 10 dB absorbing bandwidths of 8.9–9.7 GHz with thicknesses 3.15–3.43 mm.

scholarly journals Analytical and Experimental Performance Evaluations of CAN-FD Bus

IEEE Access ◽  
2018 ◽  
Vol 6 ◽  
pp. 21287-21295 ◽  
Author(s):  
Ricardo De Andrade ◽  
Kleber N. Hodel ◽  
Joao Francisco Justo ◽  
Armando M. Lagana ◽  
Max Mauro Santos ◽  
...  
Keyword(s):  
Performance Evaluations ◽  
Experimental Performance

Relationships Between Subjective Ratings and Objective Measures of Performance in Speechreading Sentences

1997 ◽  
Vol 40 (4) ◽  
pp. 900-911 ◽  
Author(s):  
Marilyn E. Demorest ◽  
Lynne E. Bernstein
Keyword(s):  
Hearing Impairment ◽  
Performance Evaluations ◽  
Objective Measures ◽  
Large Individual ◽  
Subjective Ratings ◽  
Objective Performance ◽  
Phonetic Distance ◽  
Stimulus Length ◽  
Measures Of Performance ◽  
Confidence Scale

Ninety-six participants with normal hearing and 63 with severe-to-profound hearing impairment viewed 100 CID Sentences (Davis & Silverman, 1970) and 100 B-E Sentences (Bernstein & Eberhardt, 1986b). Objective measures included words correct, phonemes correct, and visual-phonetic distance between the stimulus and response. Subjective ratings were made on a 7-point confidence scale. Magnitude of validity coefficients ranged from .34 to .76 across materials, measures, and groups. Participants with hearing impairment had higher levels of objective performance, higher subjective ratings, and higher validity coefficients, although there were large individual differences. Regression analyses revealed that subjective ratings are predictable from stimulus length, response length, and objective performance. The ability of speechreaders to make valid performance evaluations was interpreted in terms of contemporary word recognition models.

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