反应概率

而在粒子浓度较大时，则随反应概率P或粒子扩散步数W的增大，从离散团簇状生长转变为连续枝叉状生长。

However , the growth morphologies change from discrete cluster to continuous dendrite with the increase of P or W at higher n .

本文研究了求解随机结构静力反应概率密度演化方程的差分方法，分别探讨了单边差分格式和Lax-Wendroff格式的计算性态。

Difference method for probability density evolution equation of the stochastic structural response was studied . The computational performances of one-sided difference scheme and Lax-Wendroff scheme were discussed , respectively .

原子氧和石墨在近地轨道环境中反应概率的数值估算

A numerical evaluation of reactive probabilities of atomic oxygen with graphite in low earth orbit

发展了随机结构反应概率密度演化分析中随机参数空间的切球选点法。

The strategy of selecting points via sphere of contact in probability density evolution method for the response analysis of stochastic structures is presented .

密度演化方法是一类直接获取随机结构动力反应概率密度函数及其演化过程的有效方法。

The probability density evolution method ( PDEM ) is an effective approach capable of capturing instantaneous probability density functions and its evolution as well .

内容涉及：工程场地的随机波动分析、结构非线性反应概率密度演化分析、结构损伤识别与健康监测等侧面。

The contents include : the random wave analysis , the probabilistic density evolution analysis of the structural nonlinear responses , the structural damage identification and the structural health monitoring .

研究表明随着时间的增长，复合随机振动反应概率密度曲线趋于复杂，基于正态分布假定的二阶矩分析方法可能造成可靠度分析结果的显著偏差。

The investigations demonstrate that the probability density curves tend to be complex with time , which means that the widely applied second moment method for reliability evaluation based on normal distribution assumption may have great deviation .

在涉及中微子反应的概率幅计算中，含时微扰的时间标度必须远小于1S，否则会带来弱作用过程中显著的味破坏，从而违反微观因果律。

In the calculation of the probability involving the neutrino , the time scale in the time-dependent perturbation theory should be much less than Is . Otherwise , it will bring the obvious flavor violation in the weak interaction which is in contradiction with the micro-causality .

非线性土层随机地震反应的概率平均等价线性化法

Probabilistic Average Approach for Stochastic Seismic Response Analysis of Soil Layers

结构非线性随机地震反应的概率密度演化方法

Probability density evolution method-based nonlinear random seismic response analysis of structures

基底滑移隔震结构的随机反应和概率设计

Random Response and Probability Design for Structures with Base Sliding Isolation

随机结构反应的概率密度演化分析

Probability Density Evolution of Stochastic Structural Responses

方法：通过对868例使用非离子造影剂患者的观察，分析其出现不良反应的概率和程度。

Methods : To observe CT study of868 patients who had been given nonionic contrast agent .

在多台布机扰力下的反应的概率分布服从正态分布。

The probability distribution for displacement response under the excitation force actions of multi-looms obeys normal distribution .

提出了随机荷载作用下随机结构线性静力反应的概率密度演化方法。

Probability density evolution method for the analysis of linear stochastic structural static response under random loading is proposed .

卡利生育诊所的总裁西蒙·费舍尔教授认为，受孕前服用阿司匹林确实能够降低男性胚胎与母体发生排斥反应的概率。

Aspirin before conception seems to ensure the chance of a male embryo being rejected is reduced , says Professor Simon Fishel , president of CARE Fertility clinics .

基于双电极测试系统中电子媒介体作用的新机制，选择适当的检测电压来减少干扰物发生电极反应的概率。

Based on the new mechanism of electron mediator in two-electrode test system , it is possible to reduce responses of interferents by selecting the appropriate work voltage .

内容包括：随机地震动场的波动数值模拟、工程结构非线性地震反应的概率密度演化分析方法、大型生命线工程网络系统的抗震可靠性分析与优化等。

The research topics include : numerical modeling of random seismic waves , probabilistic density evolution analysis for nonlinear structural responses , seismic reliability analysis of large-scale lifeline network .

根据最大位侈反应的概率分布函数，求得了这种基底隔震结构和与它相应的基底固定结构在给定地震作用下的破坏概率。

According to probability distribution functions of maximum displacement responses , failure probabilities of such a base-isolated structure and the corresponding base-fixed structure under given earthquake , excitation are calculated .

通过引入扩展状态向量，构造具有随机初始条件的状态方程，导出了复合随机振动反应的概率密度演化方程。

The augmented state vector is introduced to construct a state equation with random initial conditions . The probability density evolution equation ( PDEE ) for the response of compound random vibrations is deduced .

研究表明，随机结构反应的概率密度具有演化特征，且概率密度曲线与正态分布差异甚大，甚至可能出现双峰曲线。

The investigation shows that the probability density curves of the stochastic structural response have the characteristics of evolution , and they are far from normal distribution , at some time they even have double peaks .

结构的抗震性能评估是基于性能的抗震设计理论的主要研究内容之一，不同地震动水平下结构位移反应的概率分析是其难点也是关键所在。

Seismic evaluation of structural performance is one of the main research contents in performance-based seismic design theory . Probabilistic analysis of structural displacement responses for different seismic intensities is difficult but principal for performance evaluation .

进行了八层层间剪切框架结构复合随机振动反应的概率密度演化分析，证明提出的方法具有计算高效、收敛性稳定与精度高的特点。

An example is studied where the probability densities of the response of an 8-story floor shear frame structure are evaluated , verifying the high computational efficiency , stable convergence and high accuracy of the present method .

同时，介绍了最新发展的概率密度演化方法，这一方法在非线性结构系统分析中具有独特性，可获得非线性结构反应的概率密度分布及其随时间的变化过程。

At the same time , an original probability density evolution method , which is capable of evaluating the instantaneous probability density functions of stochastic responses of general multi-degree-of-freedom nonlinear structures , has been developed in recent years .

其次，为了协调弱作用中代轻子数守恒与中微子传播中代轻子数破坏，通行的含时微扰论在应用到涉及中微子反应的概率计算时会受到限制。

Second , in order to coordinate the flavor conservation in the weak interaction and the flavor violation in the neutrino propagation , the conventional time-dependent perturbation theory is limited in the calculation of the reaction probability where the neutrino is involved .

并结合卫生防疫工作的特点提出，提高法律意识，促进依法行政；加强专业技术人员培训；做好免疫接种监督等方式可规范计划免疫行为，降低异常反应发生概率。

Meanwhile , according to the characteristics of medical prevention , it is a good way to increase the law awareness , promote the administration by law , strengthen the training of technicians , inspect the ways of preventive inoculation and deduce the probability of abnormal reactions .

视觉P300与反应时间的概率效应

Visual P300 and reaction time : probability effect

结构动力非线性随机反应的联合概率分布

The joint probability density function for nonlinear dynamic stochastic response of structures

基于随机结构动力反应分析的概率密度演化方法，提出了一类新的随机结构动力可靠度分析方法。

Based on the probability density evolution method for dynamic response analysis of stochastic structures , a class of new dynamic reliability analysis approaches for stochastic structures is proposed .

本文提出了一种计算微阻尼、弱非线性体系受平稳宽频带随机过程干扰时，平稳和非平稳包络反应首通概率的近似解析方法。

An approximate analytical method is presented for determining the first passage probability of both the stationary and nonstationary envelope response of a lightly damped and weakly nonlinear oscillator excited by stationary wide-band stochastic process .