查询词典 stochastic dynamic model

The model adopts the combination of mixed OD distribution and stochastic equilibrium assignment with some technical references of Logit choice model.

考虑到用户的实际出行选择行为，文献[2]研究了单个用户的OD分布与随机平衡分配组合问题。

Markov chain of stochastic process theory was introduced into the reflection mathematic model by considering the fact of total reflectance when light propagate to optically thinner medium from denser medium. The reflectance mathematic model of halftone image coated with different reflectance ink layer was established and discussed.

将随机过程论中的马尔可夫链理论引入到印刷品的反射－透射数学模型中，考虑到光在由光密介质进入光疏介质中传播时会发生全反射现象的事实，讨论并建立了不同折射率油膜层叠加的半色调图像光谱反射率数学模型。

Secondly the author summaries the research status of parametric estimation, forecasting volatility and model choice for stochastic volatility model.

其次，综述了随机波动模型在参数估计、波动滤波和预测、模型选择这三方面的研究进展情况。

The conventional numerical simulation of a reverberant field as a launch acoustic environment was introduced. Following the reciprocity theorem used in the coupled FE-BE model, the structural response due to reverberant acoustic excitation was substituted by the sound pressure caused by force excitation on the structure, then the output response power spectrum density of the coupled model subjected to reverberant environment was evaluated based on the stochastic analysis principle.

首先介绍了传统的构建混响声场的数值模拟方法；其后利用声振耦合中的互易定理，将混响声场的激励问题转化为结构模型上力激励引起的场点声压响应问题，并采用随机分析原理，用谱分析方法推导了结构在混响声场激励下的响应计算公式；最后建立了航天器典型结构的声振耦合模型，并分别用传统方法和利用互易定理的方法进行了数值模拟。

Some concepts about the reliability are described, and the method for calculating the reliability of system is provided by making linear substitution. While taking Stochastic Finite Element Method into the reliability calculation, a Nonlinear SFEM model is founded, and methods to resolve some problems in SFEM calculation are given. So as to the calculation of the force boundary, a method in FEM is provided for sabot pressure calculation, base of this, the numerical calculation model is carried out.

给出了弹丸发射强度可靠性计算中的一些理论和概念；给出了串联系统可靠性的逐步线性等效计算方法；将随机有限元方法引入可靠性计算中，建立了弹丸发射时的非线性随机有限元计算模型，并给出了计算中的一些问题的处理方法；在随机有限元的载荷边界的计算中，提出了弹带压力的有限元计算方法和在有限元求解思想上的数值计算模型。

The paper improves the velocity's control rules of a first-order microcosmic stochastic traffic cellular automaton model and incorporates it's stochasticity as a deceleration parameter in the construction of the fundamental diagram used by a macroscopic first-order continuum traffic model.

本文对微观一维随机元胞自动机交通流模型的速度控制规则进行了改进，并将其随机特性转化为减速参数合并到宏观一阶连续介质理论交通流模型中，重新构建了反映流量——密度的交通流基本图。

The first one focuses upon the fundamental theory and methods of system identification, including the basic concepts of system description and identification,review of matrix theory, stochastic process and pulse response of linear systems; the first principle models for lumped and distributed parameter systems; modeling of bioreactions; auto regressive moving average model; weighted least square and regressive weighted least square for parameter estimation of ARMA model; Runge-Kutta and Simplex methods; an example of BPNN application; as well as Kalman Filter.

第一部分包括知识驱动建模、数据驱动建模、参数估计和状态估计的基础理论和方法。具体为：(1)系统辨识和系统描述的基本概念，包括矩阵论、随机过程、线性系统的脉冲响应函数等基础知识回顾；(2)基于动态物料和能量衡算的集总参数、分布参数对象的知识驱动建模方法；(3)生物反应系统的建模方法；(4)自回归移动平均模型；(5) ARMAX模型参数的加权最小二乘参数估计一次性算法和递推算法，相应的统计性质；(6)龙格库塔法和单纯形法；BP神经网络应用实例；(7)卡尔曼滤波器，及其与加权最小二乘参数估计递推算法的对比。

The second class of model is stochastic equilibrium model.

第二类模型是随机均衡模型。

The purpose of this paper is to introduce a new method for analyzing the amino acid sequences of proteins using the hidden Markov model, which is a type of stochastic model.

本文的目的是介绍一种新的使用隐马尔可夫模型--随机模型的一种--来分析蛋白质的氨基酸序列。

To start from the deterministic model, In-depth discussion of the harvest stochastic competition model optimization problem.

从确定性模型入手，深入讨论随机竞争模型的收获最优问题。

It was just a normal day of school

那只是上学的普通一天

Which is a very good reference in this issue.

这是一个在这个问题上很好的参考。