多线性的

This paper is to mainly discuss the following problems which are diffieult to be solved in commodity freight volume forecast for a period of time: Variable choice and multiple coorelations; Application of the principles of combining quantitative analysis with qualitative analysis; Selection of the remarkable variables by using Multistep Regression Method; Establishment of reasonable freight volume forecast model.

本文针对总货运量预测中较难解决的问题——变量选择和多重共线性，运用定性和定量相结合原则利用逐步回归方法定量挑选显著性变量，建立理想的货运量预测模型。此外，本文在评介货流研究一般方法基础上，根据多地区货物交流目的，探讨了货流预测的方法，提出用Frator法预测货流。

Methods In conjunction with the instance of the clinical trial, to construct the correlation structures within subject, then to expatiate the theory about univariate ANOVA, Multivariate analysis of variance, mixed l...

结果与结论通过实例阐述了单变量方差分析、多变量方差分析、混合线性模型、广义估计方程在新药临床试验分析中的应用，对常用分析方法感到棘手的数据非独立性问题展示了多种不同的解决方法，得出了各自的优缺点、适用条件。

First of all, this paper establishes the simulation method for fluctuating wind with a multivariate normal distribution model and an autoregressive filter. On the basis of simulation results of the wind field, the time dispersion of the buffeting forces by turbulent wind is achieved.

首先，本文利用多变量正态分布模型并结合线性滤波法的自回归模型建立了脉动风的仿真模拟方法，从而实现了对紊流抖振力的时间离散。

Duffing equations and Liénard equations are two classical mathematical models in nonlinear oscillations, and have been studied ex...

Duffing方程和Liénard方程是非线性振动中的两类经典的方程，也是人们研究的最多、结果非常丰富的方程。

Duffing equations and Liénard equations are two classical mathematical models in nonlinear oscillations, and have been studied extensively.

Duffing方程和Liénard方程是非线性振动中的两类经典的方程，也是人们研究的最多、结果非常丰富的方程。

In Chapter 4, we consider the qusilinear elliptic systems with the homogeneous Neumann boundary condition, and obtain the existence and multiplicity of positive solutions.

在第四章中，我们讨论带有齐次Neumann边界条件的拟线性椭圆型方程组(方程和第三章的一样，边界条件不同)，研究了正解的存在性和多解性。

Using the linear combination of normal probability density functions to fit histograms of mean durations, it has the advantage of visualigation.

该方法用多正态密度函数（正态密度函数的线性组合）拟合平均持续时间的直方图，具有可视性的优点。

In this paper, for the data character of exploring and developing area in oil-area, I propose a sub-area, multi resolution and level model and create effective management mechanism on stratum grid data organization with index managing and organizing data linear octonary trees.

本文针对油气田的勘探、开发领域的数据特点，提出了分块的多分辨率层次模型，结合线性八叉树索引管理和组织数据，建立有效的地层网格数据组织管理机制。

Based on the factors of mass economy,the paper establishes a multi- warehouse location model which takes the sum of minimized supply costs,transport costs and fixed costs as the goal and within which supply costs are expressed by piecewise linear cost function,solves the model with a genetic algorithm and shows an example.

在考虑规模经济的因素下，以最小化项目的供货成本、运输成本与固定成本之和为总目标建立了一个多仓库选址模型，其中把供货成本用分段线性函数表示，体现了厂商存在的规模经济效应，并采用遗传算法对模型进行求解。

Secondly, linear algebra, can create a polynomial coefficient and multiple lines between the matrix-style counterparts, so as to transform line for the primary use of the domain P polynomial the greatest common factor.

其次，在线性代数中，可以建立多项式的系数与多行矩阵表示式之间的对应关系，从而利用初等行变换求数域P上的多项式的最大公因式。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。