随机扩散

粒子不仅在速度空间中发生扩散，而且在位形空间中k×B0的方向上出现随机扩散和定向流。它们可以远比经典过程强得多。

It is found that spatial diffusion and directional flow , which are much stronger than the classical processes , may be driven by waves in the k × B , direction .

最后，从宏观和微观角度分析了产业集群技术创新扩散，进而建立技术创新扩散的随机扩散模型，讨论了各种参数对产业集群内技术创新扩散的影响，用BP神经网络模型进行技术创新扩散预测。

Finally , making analysis on the technological innovation diffusion of industrial cluster from views of the macro and micro economy , and establishing the random diffusion model of technological innovation diffusion . A forecast of technological innovation diffusion is made by using BP neural network .

随机扩散模型中的漂移函数与波动率函数的非参数估计

Nonparametric Estimation of Drift and Volatility Functions in Stochastic Diffusion Models

一个对流边界层中的随机扩散模式

A Random Walk Diffusion Model in the Convective Boundary Layer

单波驱动飞行粒子随机扩散

Stochastic diffusion of transit particles driven by a single wave

关于随机扩散过程参数估计的优化研究

The majorization research on parameter estimation of random scattering process

非均质空间动态随机扩散的一般方程及其应用地方科技动态

Stochastic movement equation of dynamic spatial diffusion in nonhomogeneous space and its application

振动一维流化浅床中颗粒随机扩散的研究

A study on random particle diffusion in a one dimensional vibratory shallow fluidized bed

污染带随机扩散模型的应用&长江污染带预测

Application of Stochastic Diffusion Model to Forecasting the Polluted Zone of the Yangtze River

随机扩散水质模型研究

Research on stochastic diffusion water quality model

一类可测空间中随机扩散过程测度的绝对连续性与等价性

Absolute continuity and equivalence of measure to stochastic diffusion processes in a kind of measurable space

分析了海洋环境下氯离子在混凝土中的传输机理及其随机扩散过程。

The transportation mechanics and stochastic diffusion of chloride ions in concrete in the marine environment are analyzed .

非均质随机扩散方程在城市宗地地价评估中的应用

Utilization of Stochastic Movement Equation of Spatial Diffusion in Nonhomogeneous Field in Appraisal of the City Land Price

该模型不仅考虑了质点在海水中的对流运动，而且还用大量质点的随机扩散模拟湍扩散过程。

Not only convection but also random diffusion of substantial particle and their sediment are considered in the model .

这些现象表明，细胞之间的随机扩散联系可能在帮助生物体系进行信息传递的过程中起着十分重要的作用。

These results suggest that shortcuts among the cells may play a constructive role in helping the cell information propagating .

各品种水平空间和垂直空间生态位宽度均接近于1。此研究表明梨锈病菌是以随机扩散传播侵染的。

The niche breadths of horizontal and vertical space of each cultivar were approximate to1.The result shows that the infection of G.haraeanum was a random distribution .

对群落中优势种种群特征进行分析，表明群落在向顶级群落发育的过程中，优势树种种群结构呈典型的增长型，总体分布有由集群向随机扩散的趋势；

The analysis of the dominance species population characters found that the population structures of the dominance tree species are typical increasing model and there is a trend of the distribution pattern of the dominance tree species from aggregation to random during the development process of forest climaxes .

设计了一种运用Lyapunov直接法研究随机反应扩散系统的稳定、镇定与控制的方法，并利用该方法建立了随机反应扩散系统稳定性的基本理论。

An approach is designed to study stability , stabilization and control problem of stochastic systems with reaction-diffusions . The approach is based on Lyapunov direct method .

运用颗粒流体二相流的随机行走扩散模型（DRW）研究了紊流风场下起跳沙粒的运动轨迹特性。

A discrete random walk dispersion model is applied to study the trajectory characteristics of jumped sand particles in turbulent air flow in this paper .

废气排放塔尾流区随机游动扩散模拟研究

Random Walk Modeling of Dispersion in Wake Area of Exhaust Tower

多周期伪随机序列扩散体近场接收点的优化选择

Optimization of Distance from Receiver to Multi-period Pseudorandom Diffusers in Near Field

随机反应扩散系统的稳定、镇定与控制

Stability , Stabilization and Control of Stochastic Reaction Diffusion Systems

大面积多周期伪随机序列扩散体群的一种优化布置方案

A prediction method of layout plan of large area and periodical pseudorandom sequence diffusers

随机种群扩散系统最优边界控制的充分必要条件

Necessary and Sufficient Conditions of the Optimality Border in Stochastic Population System with Spatial Diffusion

伪随机序列扩散体具有良好的扩散效果，但是大面积周期布置时会在扩散方向产生大量旁瓣。

Pseudorandom sequence diffusers provide good scattering , but when multiple periods are used , the diffusion pattern will be narrowed into specific directions .

为了消除这些旁瓣，并得到符合使用者要求的扩散声压响应曲线，本文提出一种实现伪随机序列扩散体群大面积最佳布置方案的布置方法。

This paper presents a method of layout plan of large area pseudorandom sequence diffusers to cut down the diffuse peaks and to meet user 's demand .

采用拉格朗日随机粒子扩散模式和三维风场诊断模式以及实际气象观测资料，模拟分析了福建惠安核电厂所在沿海地区的大气流动和气载污染物的中尺度扩散情况。

A Lagrangian stochastic model and a three-dimensional wind field diagnostic model are used to reveal the characteristics of mesoscale atmospheric flow and diffusion over Huian area , Fujian province .

本文主要研究成果如下：1、针对粒子多样性减弱问题，提出了一种基于随机Sigma点扩散的重采样算法&RSPR算法。

The main achievements are as follows : 1 . To deal with the problem of particle diversity after basic resampling process , a new resampling algorithm based on random Sigma points-RSPR algorithm is proposed .

随机介质中扩散过程的尺度跃迁

Scaling up of diffusion process in a random medium

随机游走大气扩散模型在核事故应急中的开发和应用

Development and application of random walk model of atmospheric diffusion in emergency response of nuclear accidents