搜索结果: 76-90 共查到“知识库 计算物理学”相关记录368条 . 查询时间(5.989 秒)
Enhancing the understanding of entropy through computation
Enhancing entropy through computation computational algorithms distinguishable particles
<
2011/8/11
Abstract: We devise a hierarchy of computational algorithms to enumerate the microstates of a system comprising N independent, distinguishable particles. An important challenge is to cope with integer...
Prediction of equilibrium Li isotope fractionation between minerals and aqueous solutions at high P and T: an efficient ab initio approach
Li isotope fractionation equilibrium minerals aqueous
<
2011/8/11
Abstract: The mass-dependent equilibrium stable isotope fractionation between different materials is an important geochemical process. Here we present an efficient method to compute the isotope fracti...
Geometrical exponents of contour loops on synthetic multifractal rough surfaces: multiplicative hierarchical cascade p-model
Geometrical exponents contour loops multiplicative hierarchical cascade p-model
<
2011/8/18
Abstract: In this paper, we study many geometrical properties of the contour loops to characterize the morphology of typical synthetic multifractal surfaces following multiplicative hierarchical casca...
A One-Dimensional Local Tuning Algorithm for Solving GO Problems with Partially Defined Constraints
Global optimization multiextremal constraints geometric algorithms index scheme local tuning
<
2011/8/18
Abstract: Lipschitz one-dimensional constrained global optimization (GO) problems where both the objective function and constraints can be multiextremal and non-differentiable are considered in this p...
Univariate global optimization with multiextremal non-differentiable constraints without penalty functions
Global optimization multiextremal constraints Lipschitz functions continuous index functions
<
2011/8/18
Abstract: This paper proposes a new algorithm for solving constrained global optimization problems where both the objective function and constraints are one-dimensional non-differentiable multiextrema...
基于BA模型高团聚性网络构造
复杂网络 团簇性 加边 无标度
<
2012/11/26
介绍了复杂网络，指出BA模型在刻画真实网络上的不足，即团簇系数不高.在BA模型的基础上引入加边机制，提出了一种改进模型.数值模拟结果表明：在改进模型中，网络在保持BA模型无标度性质的同时，具有较高的团簇系数；网络的团簇系数C随改进模型中加边概率p的增大而增大，当p=1时，网络的团簇系数比同等规模的BA模型提高了约100倍.
Analysis of a Fast Fourier Transform Based Method for Modeling of Heterogeneous Materials
Homogenization Fast Fourier Transform Conjugate Gradients
<
2011/8/18
Abstract: The focus of this paper is on the analysis of the Conjugate Gradient method applied to a non-symmetric system of linear equations, arising from a Fast Fourier Transform-based homogenization ...
Numerical Solution of the Time-Dependent Dirac Equation in Coordinate Space without Fermion-Doubling
Dirac equation Numerical method Fermion doubling problem Klein paradox Relativistic wave packet
<
2011/8/11
Abstract: The application of a recently developed numerical method for the solution of the time-dependent Dirac equation is presented. This numerical method, described in \cite{Lorin2011190}, is based...
Reducing Search Lengths with Locally Precomputed Partial Random Walks
Random walk network search resource location search length
<
2011/8/18
Abstract: Random walks can be used to search a complex networks for a desired resource. To reduce the number of hops necessary to find the resource, we propose a search mechanism based on building ran...
Abstract: In a recent papers, Turner and Turner (2010 {\em Am. J. Phys.} {\bf 78} 905-7) and Jensen (2011 {\em Eur. J. Phys.} {\bf 32} 389-397) analysed the motion of asymmetric rolling rigid bodies o...
On the Mechanism of Roe-type Schemes for All-Speed Flows
Roe-type scheme all-speed flows preconditioning checkerboard pressure-velocity decoupling asymptotic analysis global cut-off strategy
<
2011/8/17
Abstract: In recent years, Roe-type schemes based on different ideas have been developed for all-speed flows, such as the preconditioned Roe, the All-Speed Roe, Thornber's modified Roe and the LM-Roe ...
Multiscale approach for bone remodeling simulation based on finite element and neural network computation
Multiscale Hierarchical Bone remodeling Finite element Neural network
<
2011/8/5
Abstract: The aim of this paper is to develop a multiscale hierarchical hybrid model based on finite element analysis and neural network computation to link mesoscopic scale (trabecular network level)...
Gafchromic film dosimetry: calibration methodology and error analysis
Gafchromic film dosimetry calibration methodology error analysis
<
2011/8/5
Abstract: Purpose : To relate the physical transmittance parameters of the water equivalent Gafchromic EBT 2 Film with the delivered dose in a transparent absolute calibration protocol. The protocol s...
Some methods of estimating uncertainty in accident reconstruction
estimating uncertainty accident reconstruction Gauss statistical method
<
2011/8/5
Abstract: In the paper four methods for estimating uncertainty in accident reconstruction are discussed: total differential method, extreme values method, Gauss statistical method, and Monte Carlo sim...
Abstract: Assume that hadrons are formed from the emergence string. Usual string should possess two moving states: oscillation and rotation, so we propose corresponding potential and the equation of t...