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扩散概率
相关语句
  spreading probability
     On the base of studying the effects of diseases spread via transportation, the broke-out diseases spreading probability model is set up.
     在研究交通运输传播疫情诸效应基础上,建立交通运输突发疫情扩散概率模型。
短句来源
  “扩散概率”译为未确定词的双语例句
     In this paper, two kinds of growth which are most widely researched in fractal growth are cared: one is Diffusion-Limited Aggregation(DLA), the other is the Growth of Thin Films. Based on the classic theoretical models of this two growths , six improved models, built for more practical use, are presented: Diffusion and Reaction-Limited Fractal Aggregation with Finite Steps; DLA with Anisotropy Probability of Reaction;
     本文主要针对分形生长领域中两种最为广泛研究的生长:一是扩散置限聚集生长(DLA),二是薄膜生长,从这两种生长的经典理论模型出发,根据实际研究的需要建立了六种改进的模型:有限步扩散反应置限分形聚集模型、反应概率各向异性的DLA模型、扩散概率各向异性的DLA分形生长模型和旋转的DLA团簇分形生长模型;
短句来源
     For two-dimensional square lattice, we calculate analytically the Hausdorff dimension of the anisotropic diffusive DLA clusters, and show that the Hausdorff dimension D varies continuously with the anisotropic diffusion probability p, with Dmax = 5/3 and Dmin = 3/2. We also compare our results with the numerical results of Jullien et al. , and find a very good coincidence.
     结果表明,此时生长集困的Hausdorff维数D随各向异性扩散概率p连续变化,其最大值为5/3,最小值为3/2,还将这里所得到的理论结果与Jullien等人的数值结果进行了比较,发现它们符合得很好。
短句来源
     The aggregation of ultra\|thin films on the anisotropic substrate is simulated. The growth morphologies such as fractal, dendritic, dense growth and “step\|flow" are obtained. The control parameters of simulation are the probability of diffusion along different direction P, the diffusion steps W on the substrate and the diffusion steps W′ at cluster perimeter. The simulation results are consistent with the experimental observations.
     通过改变原子沿不同方向的扩散概率P ,原子在基底上的扩散步数W及沿周界的扩散步数W′,得到与实验结果一致的分形生长、枝晶状生长、团状生长等生长形态和“台阶流动”的生长现象以及相应的定量结果
短句来源
     By analyzing example, the thesis demonstrates the different probability of different transportation manner and presents a reference of choosing travel means for passenger under broke-out diseases epidemic situation.
     通过实例分析,确定各种交通运输方式突发疫情的扩散概率,为旅客在疫情发生时进行出行方式比选提供依据。
短句来源
     In this paper,based on the discrete memoryless source model,the error resiliency of variable length codes(VLC) is analyzed.
     基于离散无记忆信源模型,分析了变长码的抗误码扩散概率
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  相似匹配句对
     PROBABILSTIC REPRESTENTATION OF SOLUTION OF DIFFUSION EQUATION
     扩散方程解的概率表示
短句来源
     Representation of Solutions for Steady state Convection diffusion Equation
     稳态对流扩散方程解的概率表示
短句来源
     Probabilistic Logic Programming
     概率逻辑程序
短句来源
     Probability Experiments
     概率实验
短句来源
     Nonlinear Diffusion
     非线性扩散
短句来源
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  spreading probability
In the Fokker Planck equation we had a di erential equation whose Green's function was a spreading probability distribution in momentum space.
      


We present a coordinate transformation approach to study the effect of anisotropic diffusion-on the growth of DLA clusters. For two-dimensional square lattice, we calculate analytically the Hausdorff dimension of the anisotropic diffusive DLA clusters, and show that the Hausdorff dimension D varies continuously with the anisotropic diffusion probability p, with Dmax = 5/3 and Dmin = 3/2. We also compare our results with the numerical results of Jullien et al., and find a very good coincidence. Finally, we discuss...

We present a coordinate transformation approach to study the effect of anisotropic diffusion-on the growth of DLA clusters. For two-dimensional square lattice, we calculate analytically the Hausdorff dimension of the anisotropic diffusive DLA clusters, and show that the Hausdorff dimension D varies continuously with the anisotropic diffusion probability p, with Dmax = 5/3 and Dmin = 3/2. We also compare our results with the numerical results of Jullien et al., and find a very good coincidence. Finally, we discuss analytically the generalized dimensions Dq for DLA clusters with anisotropic diffusion.

本文利用坐标变换的方法讨论了各向异性扩散对DLA集团标度行为的影响。对二维正方形点阵,解析计算了各向异性扩散DLA集团的Hausdorff维数。结果表明,此时生长集困的Hausdorff维数D随各向异性扩散概率p连续变化,其最大值为5/3,最小值为3/2,还将这里所得到的理论结果与Jullien等人的数值结果进行了比较,发现它们符合得很好。最后,还解析讨论并计算了各向异性扩散DLA的广义维数D_q(p)。

A significant body of spatial diffusion theory exists as a result of the work of Hagerstrand and others. Spatial diffusion research has been important in understanding the spread of diseases, ideas, businesses,produCts, and people from an initial origin through time and space. But, existent diffusion models have beenfound to be parsimonious and inflexible in solving practical problems, because the Hagerstrand's models wereband on the homogeneous space and the diffusion of geographic environment was ignored.This...

A significant body of spatial diffusion theory exists as a result of the work of Hagerstrand and others. Spatial diffusion research has been important in understanding the spread of diseases, ideas, businesses,produCts, and people from an initial origin through time and space. But, existent diffusion models have beenfound to be parsimonious and inflexible in solving practical problems, because the Hagerstrand's models wereband on the homogeneous space and the diffusion of geographic environment was ignored.This paper gives out a concept of the nonhomogenous and anisotropic diffusion and points out that if diffusion axes exit, the spatial diffusion possesses anisotropism , such as the growth of morphology of cities. Innovation diffuses firstly along the diffusion axes, then, filling the area between two adjacent axes. Spatial diffusion is not of the same character not only in axes, but also in the area between two adjacent axes.On the basis of stochastic movement equation of the nonhomogenous spatial diffusion, this paper deducesa nonhomogenous and anisotropic spoilal diffusion equation about two orthogonal diffusion axes. Innovationdiffuses firstly along are X and Y. diffusion probability at any point which is in the area closed by X and Ycan be expressed into product of two independent diffusion probabilities along X and Y. The spatial diffusionconformes to a diffusion probability. If two adjacent axes are not vertical, a proper complex transformation istaken. This angled area in plane z is mapped to the retrangle area in plane w and two nonorthogonal axes aremapped to the orthogonal axes u and v. According to the characteristic of the conformal map, this mapping isconformal with the exception of dispersal centre. The spatial diffusion equation in plane w is just the same asthat of orthogonal axes. By using this equation, the diffusion probability at any point can be obtained. Withtaking inverse transformation from w to z, a general stochastic movement equation of the nonhomogenous andanisotropic spatial diffusion can be concluded.This paper also gives an example on appraisal of the basic price of city land. On the basis of this equation, we set up a land price equation and give three conclusions about the isoplethic curves of land price.

由于哈格斯特朗(T.Hagerstrand)的空间扩散模型以均质地域为基础,而现实存在的绝大多数为非均质空间,因而需对非均质条件下的空间扩散问题进行探讨。以非均质空间扩散过程来考虑,对革新沿不同扩散轴及在相邻扩散轴间具有不同扩散情况的非均质、各向异性空间扩散问题进行了研究。在应用扩散介质随机游动模型的基础上,通过对扩散的理论模拟,首先建立了当扩散轴正交时的各向异性空间扩散方程。其次,将实平面上非正交的两扩散轴,通过复交换,映射成复平面上的实轴和虚轴,得到扩散概率表达式,再进行逆变换,得出非均质空间、各向异性扩散方程的一般表达式。并以城市住宅地的基准地价评估进行了实例分析。

The aggregation of ultra\|thin films on the anisotropic substrate is simulated. The growth morphologies such as fractal, dendritic, dense growth and “step\|flow" are obtained. The control parameters of simulation are the probability of diffusion along different direction P, the diffusion steps W on the substrate and the diffusion steps W′ at cluster perimeter. The simulation results are consistent with the experimental observations.

通过改变原子沿不同方向的扩散概率P ,原子在基底上的扩散步数W及沿周界的扩散步数W′,得到与实验结果一致的分形生长、枝晶状生长、团状生长等生长形态和“台阶流动”的生长现象以及相应的定量结果

 
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