查询词典 error model

Simulation results show that the model has higher precision and faster convergence speed and the maximum absolute value of the relative error for the model is

仿真结果表明，该模型相对误差的最大绝对值仅为0.06812%，收敛速度快。

Probability: Studies on the emerged accident probability of major hazard carrying the Markow process; Severity: By applying the grey system theory , on the base of the same kinds of accident-economy cost, establishes self-adapting GM (1,1) forecasting model and the model with the residual error being amended in a bid to calculate accident-economy cost; Safety management: Establishes the dynamic comprehensive analytical method on major hazard and safety management of the major hazard by applying the grey system theory and fuzzy math theory.

其次，针对重大危险源原有的二维评价方法所存在的局限性，建立了以可能性、严重性、安全管理水平为三维矢量的评价方法，并对这三个矢量进行了定量计算：可能性：运用马尔可夫过程计算了重大危险源发生事故的概率；严重性：运用灰色系统理论，根据已有的同类事故经济损失的统计资料，建立自适应性GM(1，1)模型及残差修正的模型，预测重大危险源发生事故的经济损失；安全管理水平：运用模糊数学理论和灰色系统理论，建立了重大危险源安全管理水平动态综合分析法。

Adjoint model ; assimilation system ; model error ; matching terrain

伴随模式；同化系统；模式误差；匹配地形

First, the overall satisfaction membership function of the group decision making is defined based on the allowable error given by the decision-maker respectively. Following that, a weight model is suggested for finding the maximal degree of the group preference satisfaction. Based on the suggested model, the consistency degree of the group preference is defined. Then, an alternation approach is proposed to improve the judgment of the low consistency degree of the decision-maker.

基于决策者给出的允许偏差，定义了群决策满意度隶属函数，建立了求解群体偏好满意程度最大化的权重模型，提出了群体偏好一致性程度的衡量指标，研究了对一致性程度较差的决策者判断进行交互调整的方法。

The water temperature control model of holothurian aquaculture and the model error are analyzed in this paper.

主要研究养殖池内水温控制模型的建立与误差分析。

The factors affecting postfrac productivity are discussed in the paper. The grey associability ordering indicated that the postfrac productivity was lowly correlated with the permeability interpreted by the original log data and mainly influenced by porosity, then effective thickness, and then shale content and formation pressure. In light of the genetic neural network method, the productivity of gas well was predicted by use of the log data through programing and model training. The error detecting result proved that the model was reliable and a good application effectiveness was obtained.

文章对压后影响产能的因素进行了讨论，灰关联度排序表明，压后产能与原始测井解释的渗透率关联性小，而主要影响因素依次是孔隙度、有效厚度、泥质含量和地层压力；引用遗传神经网络法，编制预测程序，利用测井资料通过模型训练，对气井的产能进行预测，误差检验验证了模型的可靠性，取得了良好的应用效果。

In this dissertation, GPS baseline solution precision is analyzed since the following aspects: 1, Different length baselines are processed and analyzed by single frequency model and ionosphere free model. 2, Basing on current single point positioning precision, certain coordinate error is added into fixed points to study the result. 3, Baseline is processed and analyzed with different observation vectors and their lineal combination models. 4, 24 hours observation was divide up to process baseline.

本文从以下几个角度研究了影响GPS基线解算精度的因素：1、采用单频和消电离层模式对不同长度的基线分别解算，对处理结果进行分析。2、根据目前单点定位精度给起始点加上适当的坐标偏差，研究起始点坐标偏差对基线处理结果的影响。3、选用不同的观测值及其线性组合，对基线解算结果进行研究。4、对24小时观测的数据分时段处理，分析观测时间段对基线处理结果的影响。

This paper provides an algorithm of constructing self adaptive partial least sqaures regression model based on Chebyshev's polynomial.It automatically builds a multinomial model based on Chebyshev's polynomial with less predicting error.

引 言偏最小二乘法[1 ] 是一种多元统计数据分析方法，它克服了自变量之间的多重相关性，既是一类模型式的方法，又是一类认识性的方法，在统计应用中起着重要的作用。

By the study of the spiral bevel and hypoid gear machine tool regulation error, the error compensation mathematical model is established, and the of Adaptive Genetic Algorithm is advanced to calculate the machine tool regulation parameter compensating value.

通过对螺旋锥齿轮加工机床调整误差的分析，建立了误差补偿的数学模型，提出了采用自适应遗传算法求解机床调整参数的补偿量的方法。

Based on the research on sensitivity of geomagnetic declination on wind measurement by UAV with Pitot-static tube,mathematical model of wind speed error to effect of geomagnetic declination is set up in virtue of wind measurement theory and error theory.

从无人机(unmanned aerial vehicle，UAV)皮托-静压管测风对磁偏角的敏感性出发，借助无人机皮托-静压管测风原理和误差理论，建立了磁偏角对测风影响的风速误差数学模型；通过仿真，分析了磁偏角对风速测量的影响和误差变化规律，并通过试验数据验证了仿真结论，为磁偏角的校正，提高风速测量精度提供了参考依据。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。