模型理论

Different models for different structure sections are established, namely, one-dimensional piping model for laneway or large hole, two-dimensional structure plane model for absciss layer and contacting weathering zone, three-dimensional seeping fracture section model.

分区建立了采空区不同注浆结构部位的理论模型，包括采空区空洞或巷道的一维"管道"模型、离层与接触风化带等结构面二维模型、导水裂隙带三维模型。

The effective signal subspace effected on by the angular correlation is analyzed through the array covariance matrix. One distributed source from any degree of angular correlation cannot be generally taken as the independent distributed source.

对于实际应用和理论推导中，源内角度何等相关程度的分布源相关模型可等价于分布源独立或相干模型要做具体分析，不能笼统地认为所有分布源相关模型都用分布源独立模型描述和处理。

After being compared and analyzed, asphaltene deposition models can be classified as the ones based on phase splitting and colloid instability.

在对比分析的基础上，将沥青沉积模型划分为基于相劈分的沥青质沉积模型及基于胶体不稳定性的沥青质沉积理论模型，指出了各模型的局限性及其存在根源。

After being compared and analyzed, asphaltene deposition model s can be classified as the ones based on phase splitting and colloid instability.

在对比分析的基础上，将沥青沉积模型划分为基于相劈分的沥青质沉积模型及基于胶体不稳定性的沥青质沉积理论模型，指出了各模型的局限性及其存在根源。

This dissertation is devoted to studying the ruin theory on the dual risk model with several dividend rates and on the bidimensional perturbed risk model with or without stochastic disturbance, which includes the discounted expected function about the dual risk model with three dividend rates and the ruin probability on the bidimensional perturbed risk model.

本文致力于研究分多段分红的对偶风险模型及二维风险模型的破产理论，主要研究了分三段分红的对偶风险模型的折现红利的期望函数，并对带有扰动项的二维风险模型的破产概率做了研究。

SIR model can be studied using the theory of branching process.

概述了用复杂网络的理论来研究两个传染病模型，即SIR模型和SIS模型，以及在这两个模型中如何计算疾病的传播阈值。

Accordingly, this paper proposes a short-term traffic flow prediction model of data fusion algorithm based on Filtering step by step. Compared with traditional prediction model through Kalman Filtering Theory, this model is not only reduce the computation and lower model to center processor's request, but also ensure estimate accuracy.

基于此，本文提出了一种基于分步式滤波的数据融合算法(Fusion Algorithm of Filtering Step By Step ，简记FAFSS)的短时交通流量预测模型，该模型与传统的基于卡尔曼滤波理论的预测模型相比，不仅减少了计算量，降低了模型对中心处理器的要求，而且保证了预测的精确度。

The theoretic formulas for cross correlation analysis were derived. 2. According to the frozen model, a transit model and expression formula of flow noise were got. Parameter estimation algorithm was applied in calculating of cross correlation function.

根据凝固模型，建立了流动噪声信号的传递模型，推导出凝固模型时的传递函数的表达式；对两种流动模型情况下，流动噪声的传递进行理论和仿真研究，仿真表明，尽管参数估计法可以消除传感器的涂污现象，但计算量大，速度慢，不能满足实时测量的要求。

A new calculation model is established using the simulating curves presented by Standing and Katz. The coefficients of the correlation are determined by fitting to the data of Standing and Katz Z-factor chart. The results of the two models are compared, the conclusion can be drawn that the error of LXF model is smaller than that of DAK model.

利用两种模型对不同拟对比温度和拟对比压力组合条件下的天然气偏差系数进行了拟合计算，与理论图版值的误差对比显示，在高温高压条件下LXF模型的拟合结果更优，特别是随着拟对比压力的增加，LXF模型的误差不断减小，因此，该模型更适用于高压和超高压条件下天然气偏差系数的工程计算。

The diorama of natural ground scene is modeled from the DEM data base on fractal theory and facet model.

在对地面场景，使用分形插值理论和小面单元模型来对实测的地面场景DEM数据进行处理，最后再利用地面散射特性模型结合地面场景模型和空间关系模型来计算地面场景的RCS数据阵，生成场景回波数据。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。