The unique advantage of this halfanalytical numerical method is that the analytical process of Conformal Mapping can transform an irregular area into a regular one such as a rectangle. Therefore, the discretization error of numerical methods on the boundary can be avoided, and the numerical algorithm can be implemented more easily, with the computing efficiency improved.

這種保角變換的半解析數(shù)值方法的突出優(yōu)點是：利用前期的保角變換解析處理將不規(guī)則的場域轉(zhuǎn)化為規(guī)則的矩形域99在线视屏，從而避免了純數(shù)值技術(shù)對復雜邊界的離散化誤差黑人又大又粗无码专区，降低了后期數(shù)值計算的算法復雜度国产，日产久久精品，并提高了計算效率女人爽到高潮视频。

A new numerical method for the fractional integral that only stores parthistory data is presented,and its discretization error is estimated.

提出了一種只需要存儲部分歷史數(shù)據(jù)的分數(shù)積分的數(shù)值計算方法使劲摸使劲操无码在线，并給出了誤差估計。

Thedecision of whether further refinement of meshes is necessary is based on the estimateof the discretization error.

我們還將移動網(wǎng)格方法應用于靜態(tài)問題，并在其中研究使用后驗誤差估計來構(gòu)造控制函數(shù)的方法春药视频一区二区二区四区。

Due to discretization error of image points and inevitable location shifts embedded in feature extraction processes, the parameters of a line determined by two feature points must possess some uncertainties.

由于圖像特征點的離散誤差和特征點提取過程中的位移現(xiàn)象日韩精品一区地址一地址二，使得由二圖像點所確定的直線的參數(shù)隨之產(chǎn)生某種不確定性。

There are a great many L-shape structures in modern designing, which induce stress concentration and singularity. The dependence of the discretization error on the mesh refinement of such structures of fillet and connection point is of particular evidence.

結(jié)構(gòu)設計中廣泛存在L-型結(jié)構(gòu)往往導致應力集中和應力奇異性国产一区日韩二区，有限元離散過程很大程度上影響了L-型結(jié)構(gòu)角點附件的位移和應力數(shù)值解精度爱爱小说网。

In this study, we find that there are two problems when applying the techniques of discretization to obtain an approximated probability density function of the project completion time in stochastic activity networks. Namely, first, there exists neither exact data structure nor systematic scheme for the computer programming when applying the techniques of discretization; and second, error may arise from assuming independency between sub-paths in the activity network.

本研究發(fā)現(xiàn)在運用文獻中的散式計算技術(shù)，求算隨機性專案完成時間的機分配函時4455四色永久域名，存在個問題：第一com.91视频，文獻中既未提供明確的資結(jié)構(gòu)也沒有系統(tǒng)化的架構(gòu)，足以將其轉(zhuǎn)為計算機程式欧美乐播视频；第二玖玖爱在线视频免费观看，因為文獻中的散式計算技術(shù)，皆假設隨機性專案網(wǎng)中的各條子徑彼此獨久久久精品久久久，而造成明顯的誤差欧美嘿咻嘿咻在线视频。

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.

對于2階精度中心差分格式的2套網(wǎng)格數(shù)值解，用Richardson外推法可以得到4階精度的解黑人性爱黄片，其工作量比直接求解4階離散方程的工作量減少許多一级性爱在线看；對于計算中的數(shù)值不確定度，用該方法分析了離散誤差亚洲无遮挡黄片，并用逐次加密網(wǎng)格的方法探討了外推法的合理性玩弄人妻少妇一级毛片。

The auxiliary technologies for hexahedral mesh generation are studied thoroughly in this article. The technologies mainly cover the parametric description of three-dimensional geometric solid boundary, the controlling of mesh precision by imposing maximum geometric discretization error, the topology analysis of mesh, the optimization of node labeling and the display of mesh with removed hidden lines.

對六面體網(wǎng)格生成的輔助技術(shù)進行了較深入的研究，其中主要討論了三維空間幾何實體邊界的參數(shù)化描述www.av黄网、利用最大幾何離散誤差來控制網(wǎng)格的離散精度天堂AV毛片在线看、在對網(wǎng)格的拓撲關(guān)系進行正確分析的基礎(chǔ)上提出改進的節(jié)點編號優(yōu)化算法以及快速的網(wǎng)格消影顯示等技術(shù)。

For the diffractive optical element realizing beam shaping in the fractional Fourier transform domain,the transform matrix calculated by the discrete sampling points was compared with that calculated by the Fresnel integral,and the discretization error of the intensity distribution on the output plane was qualitatively obtained.

針對分數(shù)傅里葉變換衍射光學光束整形器件欧美视频在线观看aaaa，比較了按離散點與按菲涅耳積分計算得到的變換矩陣間的差距www.天堂av在线，從中分析得出按離散點計算的變換矩陣引入的離散化誤差與分數(shù)傅里葉變換系統(tǒng)參數(shù)的關(guān)系。

One position control system is introduced as the objective controlled by FOC. Based on Mittag-Leffler function, the fractional order control system with full memory length is adopted as evaluation criterion, and an approximation performance function of discretization methods is proposed. Analyzing the time domain error and approximation performance, the investigation to various discretization methods is carried out comparatively in detail.

引入一個位置控制系統(tǒng)作為分數(shù)階控制對象95在线视频精品免费观看，將Mittag-Leffler函數(shù)的全記憶長度分數(shù)階控制系統(tǒng)作為評估基準逼逼插插尤物，提出了一種離散算法的近似性能函數(shù)，通過時域誤差分析以及近似性能分析亚洲毛片无码一区二区三区，對比研究了分數(shù)階微積分算子的數(shù)字實現(xiàn)方法Jizz美女18。