查询词典 stochastic

In chapter 3, the author studies the parametric estimation of basic stochastic volatility model.

第三章，研究了基本随机波动模型的参数估计问题。

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。

Except for the great success of the conventional stochastic signal processing technology, there are some obvious deficiencies, especially when it's used in the complex nonlinear systems with addictive colored noise, or the parasitical noise, whose characteristics or parameters cannot be measured.

统计信号处理技术取得了很大的成功的后面，但是它本身又存在着明显的不足，尤其是处带有加性有色噪生的非线性系统、系统的寄生噪声的参数或者分布特征等无法取得的情况下，统计方法往往显得无能为力。

The noise frequency modulation signal was particularly analyzed. The Fokker-Planck equation of noise frequency modulation was presented and the Motion-Group Fourier Transform was used by converting the partial differential equation into the variable coefficient homogenous linear differential equations. Then the solutions were given by using the peano-baker series. So the probability density function of noise frequency modulation in the filter was given. On the basis of the probability density function the stochastic resonance of noise frequency modulation signal is analyzed.

首先建立了噪声调频干扰信号通过脉冲压缩雷达中频滤波器后所满足的福克尔－普朗克方程，然后利用群移傅立叶变换（Motion-Group Fourier Transform，MGFT）将此偏微分方程化成了变系数齐次线性微分方程组，并利用Peano-Baker级数法给出了该方程组的解，最后得到了噪声调频干扰信号通过脉冲压缩雷达中频滤波器后的概率密度函数，在此基础上研究了噪声调频干扰信号造成的随机共振现象。

Location-inventory system integrated design problem under stochastic demand The location-inventory distribution system design problem involving one supplier, candidate distribution centers and multiple retailers under normal distribution demand is studied in the background of building materials industry. Retailers adopt periodic reviewinventory policy, while distribution centers adopt continuous reviewinventory policy. Considering the trade-off between inventory cost, shipping cost and facility location cost, the integrated 2-echelon inventory control policies with incapacitated facility location model is presented.

随机客户需求下的选址-库存集成问题研究：以满足正态分布客户需求的型材配送物流为研究背景，研究了由单供应商、候选分拨中心和分销点构成的配送物流系统集成规划问题，分销点、分拨中心分别采用周期检查和连续检查库存控制策略，综合考虑库存成本、运输成本和设施成本之间的均衡关系，建立了二级库存控制策略与无能力约束选址集成规划模型。

In chapter five,we study a general cosine－forced stochastic system and derive the equilibrium time correlation function using the perturbation theory and the linear response theory respectively.

在第五章中，我们分别用微扰理论和线性相关理论研究了有余弦周期信号输入的随机系统的动力学量的平衡时间关联函数。

It is said that the stochastic perturbation method basically could not fulfil the requirement of dynamical random response problems.

有关上述Gegenbauer多项式方法在随机振动问题中的应用，现有文献中尚未见报道。

The ability of tracking the reference signal and restraining the parameter perturbation and stochastic disturbance are improved.

这种算法克服了广义预测控制中求解逆矩阵的缺点，提高了系统响应的速度，并且具有较强的跟踪给定信号、抑制系统参数摄动和随机噪声的能力。

The influence of stochastic perturbation of system parameters on nonlinear dynamic system was discussed.

以齿轮系统为例，对系统参数随机扰动下非线性系统动态性能进行了分析。

Moreover, the statistical linear regression with fuzzy observation data is discussed. When the parameters of a Tagaki-Sugeno fuzzy system are perturbed with random noise, the system turns to be a stochastic T-S system.

设控制对象是用Tagaki-Sugeno模糊模型表示的非线性系统，当模型参数受到统计特征已知的随机噪声干扰时，就成为一个随机T-S模糊模型，本质上它是一个非线性随机微分系统。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐