منابع مشابه
The Whirling Blade and the Steaming Cauldron
All rights reserved iii Acknowledgements The moral is, it hardly need be shown, All those who try to go it sole alone, Too proud to be beholden for relief, Are absolutely sure to come to grief. |Robert Frost With high spirits I undertook to thank the many people who have helped me during my graduate tenure at Caltech. I have had the opportunity and pleasure of meeting many very talented people ...
متن کاملWhirling skirts and rotating cones
Steady, dihedrally symmetric patterns with sharp peaks may be observed on a spinning skirt, lagging behind the material flow of the fabric. These qualitative features are captured with a minimal model of traveling waves on an inextensible, flexible, generalized-conical sheet rotating about a fixed axis. Conservation laws are used to reduce the dynamics to a quadrature describing a particle in a...
متن کامل‘‘Single ring theorem’’ and the disk-annulus phase transition
Recently, an analytic method was developed to study in the large N limit nonHermitian random matrices that are drawn from a large class of circularly symmetric non-Gaussian probability distributions, thus extending the existing Gaussian non-Hermitian literature. One obtains an explicit algebraic equation for the integrated density of eigenvalues from which the Green’s function and averaged dens...
متن کاملResonance Excitation and the Spiral-ring Structure of Disk Galaxies
Rings are common in disk galaxies. These rings are either indistinguishable from a pair of tightly wound spirals, or themselves are a part of the spiral structure. Furthermore, their occurrence is seen coincident with a bar in the center. In this paper, we interpret this spiral-ring structure as density waves resonantly excited by a rotating bar potential. The theory gives excellent agreement f...
متن کاملDisk caching with an optical ring.
We propose a simple extension to the optical network of a scalable multiprocessor that optimizes page swap outs. More specifically, we propose to extend the network with an optical ring that not only transfers swapped-out pages between the local memories and the disks of the multiprocessor but also acts as a systemwide write cache for these pages. This extended optical network confers several p...
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ژورنال
عنوان ژورنال: Nature
سال: 1891
ISSN: 0028-0836,1476-4687
DOI: 10.1038/043533b0