Results 271 to 280 of about 10,707,489 (316)
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Partial non-Fourier encoded MRI
Proceedings IEEE International Symposium on Biomedical Imaging, 2003MRI is by nature a Fourier encoded imaging modality. But MRI is enriched and made all the more powerful and flexible by the fact that it also includes elements of non-Fourier encoding, such as slice selection. Our goal is to develop a partial non-Fourier encoding methodology that is fully integrated with, and is complementary to, existing MR encoding ...
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2D Regimes of Non-Fourier Convection
AIP Conference Proceedings, 2010In this work, we investigate the 2D flow in a rectangular cavity subject to both vertical and horizontal temperature gradients. The linearized model is studied and the effect of thermal relaxation, as described by the Maxwell‐Cattaneo law of heat conduction is examined.
N. C. Papanicolaou +2 more
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Ciba Foundation symposium, 1995
It has been realized for some time that the visual system performs at least two general sorts of motion processing. First-order motion processing applies some variant of standard motion analysis (i.e. spatiotemporal Fourier energy analysis) directly to stimulus luminance, whereas second-order motion processing applies standard motion analysis to one or
C, Chubb +3 more
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It has been realized for some time that the visual system performs at least two general sorts of motion processing. First-order motion processing applies some variant of standard motion analysis (i.e. spatiotemporal Fourier energy analysis) directly to stimulus luminance, whereas second-order motion processing applies standard motion analysis to one or
C, Chubb +3 more
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Functional representations in non-Fourier basis with applications
Physical Review A, 1993Orthogonal trigonometric basis functions in (-\ensuremath{\pi},\ensuremath{\pi}) are considered and the suitability of Fourier-like expansions involving odd harmonics of the semifundamental frequency is noted. Comparison with the conventional representation is made, pointing out the advantages of employing non-Fourier bases. As a practical application,
, Pathak, , Chandra, , Bhattacharyya
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Axisymmetric non-fourier temperatures in cylindrically bounded domains
International Journal of Non-Linear Mechanics, 1982Abstract Heat conduction solutions are presented for the case where the material obeys a non-Fourier conduction law. In contrast to the Fourier law which predicts an infinite speed of heat propagation, the non-Fourier theory implies that the speed of thermal signals are finite.
Sadd, M. H., Chin Young Cha
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Non-Fourier Thermal Stresses in a Circular Disk
AIAA Journal, 1984Since most of previous thermoelastic work has been for one-dimensional Cartesian geometries only, the purpose of this note is to present a non- Fourier thermoelastic study in a cylindrical geometry. Specifically, the present study is concerned with the axisymmetric, uncoupled thermoelastic problem in the interior region, \(r\leq a^*\).
Sadd, M. H., Cha, C. Y.
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A novel discretization and numerical solver for non-fourier diffusion
ACM Transactions on Graphics, 2020We introduce the C-F diffusion model [Anderson and Tamma 2006; Xue et al. 2018] to computer graphics for diffusion-driven problems that has several attractive properties: (a) it fundamentally explains diffusion from the perspective of the non-equilibrium
Tao Xue +4 more
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Non-Fourier Effects at High Heat Flux
Journal of Heat Transfer, 1973This brief investigates analytically non-Fourier effects in high flux conditions using the relaxation model for heat conduction. Unlike the Fourier model, the relaxation model predicts an instantaneous jump in the surface temperature of solids subjected to a step change in the surface heat flux.
M. J. Maurer, H. A. Thompson
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Conjunctive Descriptions Based on Non-Fourier Representations
Digital Signal Processing, 1999Abstract The notion of conjunctive descriptions of signals as a generalization of the time–frequency distributions was introduced some time ago (Moharir, 1990). This paper discusses some of those which are akin to Rihaczek distribution but based on non-Fourier transforms. For few deterministic signals they are computed and a visual comparison is made
N.Sudarshan Rao, P.S. Moharir
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