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on the effect of linear & non-linear texts on students comprehension and recalling
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15 صفحه اولEstimation of speech acoustics from visual speech features: A comparison of linear and non-linear models
This paper examines the degree of correlation between lip and jaw con guration and speech acoustics. The lip and jaw positions are characterised by a system of measurements taken from video images of the speaker's face and pro le, and the acoustics are represented using line spectral pair parameters and a measure of RMS energy. A correlation is found between the measured acoustic parameters and...
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Although acoustics is one of the disciplines of mechanics, its ”geometrization” is still limited to a few areas. As shown in the work on nonlinear propagation in Reissner beams, it seems that an interpretation of the theories of acoustics through the concepts of differential geometry can help to address the non-linear phenomena in their intrinsic qualities. This results in a field of research a...
متن کاملNon-Riemannian geometry of vortex acoustics
The concept of acoustic metric introduced previously by Unruh (PRL-1981) is extended to include Cartan torsion by analogy with the scalar wave equation in Riemann-Cartan (RC) spacetime. This equation describes irrotational perturbations in rotational non-relativistic fluids. This physical motivation allows us to show that the acoustic line element can be conformally mapped to the line element o...
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seismic retrofit strategies have been developed in the past few decades following the introduction of new seismic provisions and the availability of advanced materials and methods. it can be observed that new approaches to deal with more lateral forces are more innovative and more energy absorbent. in line with this, there is a growing trend toward the use of steel shear walls as a system with ...
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ژورنال
عنوان ژورنال: Nature
سال: 1966
ISSN: 0028-0836,1476-4687
DOI: 10.1038/211803a0