查询词典 Monte Carlo

In order to improve present Monte Carlo methods, method changing the node to optimistical orientation corresponding to the system having the lowest energy was proposed, which ensures the grain boundary moving to its curvature center. The new method avoided re-nucleation, and increased simulation efficiency, and made the simulation process more approaching the physics foundation of grain growth. The results show that the grain growth exponent, n=0.478, is close to its theoretic value, and the topological structure accorded with the normal grain growth of the real material.

简要回顾了晶粒长大理论并分析了现有Monte Carlo模拟方法的不足，提出了一个"择优转换"方法，确保节点转换时晶界向其曲率中心移动，以致模拟过程更接近物理基础，避免了重新形核的发生，使模拟效率大大提高，模拟的晶粒长大指数达到0.478，已接近理论值，组织形貌和实际材料正常晶粒长大组织基本一致。

In order to compare the convergence of the importance sampling based reliability sensitivity analysis and Monte Carlo based reliability sensitivity analysis, the variance and variation coefficient of the reliability sensitivity assessment are derived in this contribution.

为了比较重要抽样与直接Monte Carlo方法在分析可靠性灵敏度时的收敛性，推导可靠性灵敏度估计量方差和变异系数的计算公式，近似计算重要抽样可靠性灵敏度估计量在给定置信度下的置信区间。

Another way to approximate the posterior state distribution is Monte Carlo simulation.

对目标后验状态分布近似的另一条途径是Monte Carlo仿真。

The recently developed particle filtering technology provides a general framework for nonlinear problem, and posterior state distribution is approximated by weighted particles which are generated through Monte Carlo simulation.

近年来迅速发展起来的粒子滤波技术为求解非线性问题提供了通用的框架，它通过Monte Carlo仿真产生的带权粒子来对状态分布进行逼近。

In order to increase the detection speed, by using mixing particle sets to express the posterior probability distribution and adopting the Monte Carlo numerical methods to calculate the mixing weights, the fast fault detection algorithm is proposed based on the estimate window method.

为了提高故障检测的速度，采用混合粒子集表达后验概率分布，并由Monte Carlo数值方法优化得到各粒子集的加权值，据此提出了基于估计窗的快速故障检测算法。

Surface and are superimposed using a Monte Carlo technique to establish the most probable machine error fields.

提出了一种基于Monte Carlo方法的工程设计评估方法，利用统计的方法来预测误差场，为物理和工程设计提供理论依据。

In order to understand the underlying physics mechanism,a Monte Carlo study is done using the PYTHIA event generator.

应用PYTHIA产生器进行Monte Carlo分析其内在的物理机制。

In this note, a new approach is presented which calculates analytically the experiment estimator distribution via a Fourier transform, using the likelihood ratio as an ordering estimator. The analytic approach enjoys an enormous speed advantage over the toy Monte Carlo method, making it possible to quickly and precisely calculate confidence level results.

本文则介绍一种新的计算方法，通过定义似然函数比为实验的估计值，并应用Fourier变换，用解析的方法计算出置信度，与toy Monte Carlo方法相比，解析方法可极大地提高计算的速度和精度。

And then, adopting the same model, cyclic moment estimation statistic of different orders are constructed respectively, large sample variance expressions of the estimator through theoretic analysis are derived, as well as the constraint relation of estimator performance and noise statistical characteristic. The curve of estimation performance is obtained through Monte Carlo simulation test, which proves the related conclusion derived.

然后，论文同样以加性和乘性噪声联合干扰下的复谐波信号和复线性调频信号为观测模型，分别构造了基于不同阶次的循环矩估计量，从理论上推导出了估计量的大样本方差表达式，分析了估计量性能与噪声统计特性的约束关系，通过Monte-Carlo仿真试验得到了估计性能的曲线，验证了推导的有关结论。

The conformational variation of a polymer chain terminally attached to a surface at different temperatures was studied by using Monte Carlo and simulated annealing methods.The model polymer chain was a self-avoiding walk with non-bonded nearest-neighbor interactions on a simple cubic lattice.

借Monte Carlo和模拟退火方法研究了端基附壁高分子尾形链在不同温度下的形态变化，链的模型采用有最近邻相互吸引作用的自避行走。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了