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This article derives the extrapolated method gradually from integral action's each kind of optimized model, and it introduces emphatically the Richardson extrapolation technology and the Romberg squaring algorithm.

本文从积分运算的各种优化模型中逐步导出外推法,着重介绍了李查逊外推技术及龙贝格求积算法。

Fourth precision solution can be derived from two grid sets solution with a second precision central difference scheme by Richardson extrapolation. It reduces the amount of calculation. Uncertainty is determined from the discretization error analysis. A finer grid calculation is made to validate the extrapolation scheme.

对于2阶精度中心差分格式的2套网格数值解,用Richardson外推法可以得到4阶精度的解,其工作量比直接求解4阶离散方程的工作量减少许多;对于计算中的数值不确定度,用该方法分析了离散误差,并用逐次加密网格的方法探讨了外推法的合理性。

Linear Extrapolation Method is an adjusted extrapolation method,which is proposed based on the Power Method.It utilizes the property of the second eigenvalue of the Google matrix to acheive the high rate convergence in the computing performance of Power Method.

在乘幂法证明理论基础上,提出了一种修正的外推方法称为线性外推法,并且利用Google矩阵的第二特征值的性质,使得在乘幂法的计算过程中达到快速收敛。

The results exhibited that the monitoring models developed from the linear extrapolation method could stably indicate canopy leaf nitrogen content and leaf nitrogen accumulation in wheat.

确定了计算小麦红边位置的最佳算法为线性外推法,建立了基于线性外推法的小麦冠层叶片氮素营养监测模型。

Confidence Interval Estimation, Linear extrapolation, Exponential Estimation were used to compute the demand numbers.

本研究使用三种人力推估计算方法,分别为信赖区间估计法、线性外推法、指数推估法。

The linear extrapolation technique was the most practical and suitable method because of its relative high correlation with a wide range of chlorophyll content, relative simple algorithm, relative high sensitivity to chlorophyll at high or low content and application to more wider bandwidth spectra.

四点线性内插法计算的红边位置往往偏大,最大一阶导数法与叶绿素含量的关系存在着明显的不连续性,拉格朗日内插法、倒高斯模型法在一定程度上存在着对高叶绿素含量的饱和现象,多项式拟合法对拟合波段区间、最高项次及光谱分辨率等比较灵敏而导致结果不够稳定,而线性外推法计算出的红边位置对叶绿素含量最为敏感,预测的准确度最高,且计算相对比较简单,并能适用于较宽波段的遥感数据。

The microstructures and phases of the alloys were analyzed by OM, SEM and XRD; the erosion resistance of the alloys prepared by different processing were measured under the conditions of simulated-brine and salt atmosphere, besides the various corrosive rates were calculated by the method of weight lost; the lows of corrosion were analyzed by the electrochemical polarization curve, and the corrosive current was measured through the method of Tafel linear extrapolation.

用光镜、扫描电镜、X射线衍射分析了合金的组织与相的组成,测试了模拟海水及盐雾条件下三种工艺制备的材料的耐腐蚀性能,并用失重法定量计算各自的腐蚀速率;利用电化学极化曲线法分析了三种工艺制备的材料腐蚀规律,用塔菲尔直线外推法测定腐蚀电流。

The difinition of Least Square Extrapolation was introduced and the Algorithms were designed, which were used to Spectral Measure of Risk, and superiorities were discussed.

介绍了最小方差外推法的概念,提出了基于最小方差外推法计算双曲类风险厌恶谱度量的算法,并进行数值模拟,讨论了此方法的优越性。

The viscometry is used to determine average number molecular weights of polyhydroxyalkanoates taking chloroform as solvent.

以氯仿作溶剂,用黏度法测定了多聚羟基烷酸的分子量,摸索了检测的最佳温度与溶液浓度,比较了黏度外推法与黏度单点法测验结果,建立了黏度法测定多聚羟基烷酸平均分子量的操作方法。

This article includes the futures market pricing forwarding function into the expulsive expectation to anlysize the futures trading effect on the spot price, and the conclusion is that the spot price is more stable with the futures trading than without it.

本文在外推法的预期框架下引入期货市场的价格发送功能分析期货交易对现货价格稳定性的影响。得出的结论是在外推法预期下,期货交易起到了稳定现货价格的作用。

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Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

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