Results 221 to 230 of about 2,920,919 (271)

Wave Propagation Speed on Fractals

Journal of Fourier Analysis and Applications, 2020
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Ngai, Sze-Man, Tang, Wei, Xie, Yuanyuan
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On the conservation of calcium wave speeds

Cell Calcium, 1998
Most long distance calcium signals are believed to take the form of actively propagated calcium waves. In 1991, when this proposal was first advanced, all such waves were thought to belong to one class, for which fertilization waves were the prototype.
L F, Jaffe, R, Créton
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Determination of wave speed and wave separation in the arteries

Journal of Biomechanics, 2001
Considering waves in the arteries as infinitesimal wave fronts rather than sinusoidal wavetrains, the change in pressure across the wave front, dP, is related to the change in velocity, dU, that it induces by the "water hammer" equation, dP=+/-rhocdU, where rho is the density of blood and c is the local wave speed.
A W, Khir, A, O'Brien, J S, Gibbs, K H, Parker   +3 more
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Left ventricular wave speed

Journal of Applied Physiology, 2001
Left ventricular (LV) wave speed (LVWS) was studied experimentally and confirmed in theory. Combining the definition of elastance (E) with the equations for the conservation of mass and momentum shows that LVWS is proportional to the square root of E LA, where L is long-axis length and A is the cross-sectional area, and the density of the blood.
J J, Wang, K H, Parker, J V, Tyberg
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Spreading speeds as slowest wave speeds for cooperative systems

Mathematical Biosciences, 2005
It is well known that in many scalar models for the spread of a fitter phenotype or species into the territory of a less fit one, the asymptotic spreading speed can be characterized as the lowest speed of a suitable family of traveling waves of the model. Despite a general belief that multi-species (vector) models have the same property, we are unaware
Li, Bingtuan, Weinberger, Hans F., Lewis, Mark A.   +2 more
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Speed of Wave Energy

Nature, 1949
RAYLEIGH1 was not quite satisfied in having to obtain his equation for speed of wave energy by indirect means, from consideration of 'interference groups'and 'variation in wave-length', and he searched for an alternative method; but the one he devised was also indirect, so that his result still rested on mathematical hypothesis, and was devoid of any ...
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Combustion wave speed

Proceedings of the Royal Society of London. Series A: Mathematical and Physical Sciences, 1995
Abstract In this paper, we determine the ignition wave speed and the extinction wave speed for a reaction function which was obtained by centre-manifold reduction and is relevant to combustion. Our numerical calculations cover the entire relevant δ range for three choices of ∊.
Mercer, G. N., Weber, R. O.
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Experimental evaluation of local wave speed in the presence of reflected waves

Journal of Biomechanics, 2014
Wave speed (also called pulse wave velocity) is the speed by which disturbance travels along the medium and it depends on the mechanical and geometrical properties of the vessel and on the density of the blood. Wave speed is a parameter of clinical relevance because it is an indicator of arterial stiffness and cardiovascular diseases.
Kim H Parker, Ashraf W. Khir, Alessandra Borlotti   +2 more
exaly   +3 more sources

Standing waves and the influence of speed limits

2001 European Control Conference (ECC), 2001
Traffic dependent speed limits have improved the security of highway traffic considerably. However, on highway sections controlled by variable speed limits large oscillations in speed can still be observed. On the basis of traffic data and a macroscopic traffic model, the influence of decentrally controlled speed limits on the states of highway traffic
H. Lenz, Rudolf Sollacher, M. Lang
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Traveling waves of nonlocal delayed disease models: critical wave speed and propagation speed

Applicable Analysis, 2021
In this paper, we investigate the traveling wave solutions of diffusive disease models with a general incidence rate, nonlocal interaction and transmission delay.
Hongying Shu, Xuejun Pan, Bruce Wade, Xiang-Sheng Wang   +3 more
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