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4 papers · 1 filter
Surface Instability in Windblown Sand
Douglas A. Kurtze, Joseph A. Both, Daniel C. Hong
We investigate the formation of ripples on the surface of windblown sand based on the one-dimensional model of Nishimori and Ouchi [Phys. Rev. Lett. 71, 197 (1993)], which contains…
The 1-line of the K-theory Bousfield-Kan spectral sequence for Spin(2n+1)
Martin Bendersky, Donald M. Davis
For X a simply-connected finite H-space, there is a Bousfield-Kan spectral sequence which converges to the homotopy of its K-completion. When X=Spin(2n+1), we expect that these hom…
Effect of Excluded Volume and Anisotropy on Granular Statistics: 'Fermi Statistics' and Condensation
Daniel C. Hong
We explore the consequences of the excluded volume interaction of hard spheres at high densities and present a theory for excited granular materials. We first demonstrate that, in…
Fermi Statistics of Weakly Excited Granular Materials in a Vibrating Bed II: One Dimensional Experiment
Nathan C. Blanchard, Paul V. Quinn, Daniel Ou-Yang +2
A one dimensional experiment in granular dynamics is carried out to test the thermodynamic theory of weakly excited granular systems [Hayakawa and Hong, Phys. Rev. Lett. {\bf 78},…