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Lattice permutations and Poisson-Dirichlet distribution of cycle lengths
Lattice permutations Poisson-Dirichlet distribution Statistical Mechanics
2011/10/9
Abstract: We study random spatial permutations on Z^3 where each jump x -> \pi(x) is penalized by a factor exp(-T ||x-\pi(x)||^2). The system is known to exhibit a phase transition for low enough T wh...
How universal is the Wigner distribution?
Wigner distribution High Energy Physics - Theory Statistical Mechanics Probability
2011/10/9
Abstract: We consider Gaussian ensembles of m N x N complex matrices. We identify an enhanced symmetry in the system and the resultant closed subsector, which is naturally associated with the radial s...
The principle of absence of arbitrage opportunities allows obtaining the distribution of stock price fluctuations by maximizing its information entropy. This leads to a physical description of the und...
An ordinary differential equation for velocity distribution and dip-phenomenon in open channel flows
Open channel flows, velocity distribution, dip-phenomenon, ordinary differential equation, semi-analytical solution
2011/8/29
An ordinary differential equation for velocity distribution in open channel flows is presented based on an analysis of the Reynolds-Averaged Navier-Stokes equations and a log-wake modified eddy viscos...
Effect of swirling flow on platelet concentration distribution in small-caliber artificial grafts and end-to-end anastomoses
Platelet near-wall concentration Swirling flow Small-caliber arterial grafts End-to-end anastomosis
2012/2/29
Platelet concentration near the blood vessel wall is one of the major factors in the adhesion of platelets to the wall. In our previous studies, it was found that swirling flows could suppress platele...
A Study of Pressure Distribution of A Slider Bearing Lubricated with Powell-Eyring Fluid
Slider bearing Non-newtonian fluids Perturbation analysis Powell-eyring model Lubrication
2009/10/12
A slider bearing consisting of connected surfaces with Powell-Eyring fluid as a lubricant is analyzed in the present study. A Powell-Eyring model has been used as a non-Newtonian lubricant in a slider...
Lévy stable distribution and [0,2] power law dependence of acoustic absorption on frequency in various lossy media
Lévy stable distribution [0,2] power law dependence acoustic absorption various lossy media
2010/10/22
Absorption of acoustic wave propagation in a large variety of lossy media is characterized by an empirical power law function of frequency, 0j!jy. It has long been noted that the exponent y ranges fr...
The flow and head distribution within the volute of a centrifugal pump in comparison with the characteristics of the impeller without casing
spiral casing pump rotor stator interaction experimental investigation
2010/3/12
Measurements of the unsteady velocity, pressure and flow angle have been carried out at the impeller outlet of a centrifugal pump with and without volute casing at 5 operating points using the hotwire...
Numerical analysis of the stress distribution in an electron beam welded worm wheel
¯ nite element method residual stresses worm wheel
2010/3/12
In this paper the ¯nite element method was used to determine various stress states in an electron beam welded worm wheel. These are the residual stresses due to the welding process, stress redist...
Numerical Study of Grid Distribution Effect on Accuracy of DQ Analysis of Beams and Plates by Error Estimation of Derivative Approximations
differential quadrature grid structure truncation error high-order boundary value problems
2010/10/22
The accuracy of global methods such as the di erential quadrature (DQ) approach is usually sensitive to the grid point distribution. This paper is to numerically study the e ect of grid point distribu...