搜索结果: 151-165 共查到“知识库 计算物理学”相关记录368条 . 查询时间(2.303 秒)
Financial factor influence on scaling and memory of trading volume in stock market
Financial facto trading volume stock market
2011/9/13
We study the daily trading volume volatility of 17,197 stocks in the U.S. stock markets during the period 1989–2008 and analyze the time return intervals between volume volatilities above a given th...
Calculation technique for simulation of wave and fracture dynamics in a reinforced sheet
Calculation technique wave and fracture dynamics
2011/8/30
Mathematical models and computer algorithms are developed to calculate dynamic stress concentration and fracture wave propagation in a reinforced composite sheet. The composite consists of a regular s...
On the Four Types of Weight Functions for Spatial Contiguity Matrix
spatial autocorrelation weight function contiguity matrix spatial weights matrix
2011/8/29
This is a “spatial autocorrelation analysis” of spatial autocorrelation. I use the 1-dimension spatial autocorrelation function (ACF) and partial autocorrelation function (PACF) to analyze four kinds ...
Parallel FFT-based Poisson Solver for Isolated Three-dimensional Systems
Installation and Usage Solution Method
2011/8/29
We describe an implementation to solve Poisson’s equation for an isolated system on a unigrid mesh using FFTs. The method solves the equation globally on mesh blocks distributed across multiple proces...
The classical EMD algorithm has been used extensively in the literature to decompose signals that contain nonlinear waves. However when a signal contain two or more frequencies that are close to one a...
Generalisation of Gunion-Bertsch Formula for Soft Gluon Emission
Generalisation of Gunion-Bertsch Formula Soft Gluon Emission
2011/6/2
We generalise the most extensively used Gunion-Bertsch formula for the soft gluon emission in
a perturbative QCD. We show that the corrections arising due to this generalisation could be very importa...
Self-consistent Continuum Random Phase Approximation calculations with finite-range interactions
Self-consistent Continuum Random Phase Approximation calculations finite-range interactions
2011/1/7
We present a technique which allows us to solve the Random Phase Approximation equations
with finite-range interactions and treats the continuum part of the excitation spectrum without
approximation...
The calculation of the averaged Hubble expansion rate in an averaged perturbed Friedmann-
Lemaˆıtre-Robertson-Walker cosmology leads to small corrections to the background value of the
exp...
Overlapping fragments method for electronic structure calculation of large systems
fragments method electronic structure calculation of large systems
2010/11/25
We present a method for the calculation of electronic structure of systems that contain tens of
thousands of atoms. The method is based on the division of the system into mutually overlapping
fragme...
Mechanism of ferroelectric instabilities in non d^0 perovskites: LaCrO_3 versus CaMnO_3
Mechanism of ferroelectric instabilities non d^0 perovskites
2010/11/24
The incompatibility of partial d occupation on the perovskite B-site with the standard charge
transfer mechanism for ferroelectricity has been a central paradigm in multiferroics research. Nev-erthel...
A Nernst effect beyond the Sondheimer formula
Nernst effect beyond the Sondheimer formula
2010/11/24
The Nernst effect is known to be a sensitive probe of the scattering mechanisms. Large Nernst
effects, a decade ago a topic mainly in vortex dynamics in superconductors, have recently attracted inter...
The phenomenon of stochastic resonance (SR) is known to occur mostly in bistable systems.
However, the question of occurrence of SR in periodic potential systems is not conclusively resolved.Our pres...
First-principles GW calculations for fullerenes, porphyrins, phtalocyanine, and other molecules of interest for organic photovoltaic applications
First-principles GW calculations for fullerenes fullerenes porphyrins phtalocyanine
2010/11/23
We evaluate the performances of ab initio GW calculations for the ionization energies and HOMOLUMOgaps of thirteen gas phase molecules of interest for organic electronic and photovoltaic applications,...
Pure SU(3) glue theories exhibit a decon ning phase transition at a nonzero temperature, Tc.
Using lattice measurements of the pressure, we develop a simple matrix model to describe the
transition r...
Glauber-based evaluations of the odd moments of the initial eccentricity relative to the even order participant planes
Glauber-based evaluations of the odd moments initial eccentricity relatives
2011/1/7
Monte Carlo simulations are used to compute the centrality dependence of the odd moments of the
initial eccentricity "n+1, relative to the even order (n) participant planes
n in Au+Au collisions.
...