计算误差

In this paper as an example of a typical large-span dome roof, the direct superposition method of Ritz vector s are used in the solution of the eigenvalue problem and the cal.

本文以典型的大跨圆拱屋盖为例，将里兹向量直接叠加法应用于屋盖系统特征值问题计算和风致响应分析，其特点是在误差逼近的基础上自动生成一组正交的里兹向量并用于缩减系统自由度数。

When the filter is worked under deep integrated mode, we used the Potteralgorithm of square root filter to avoid calculate disperse, which is conduced by the accumulate of round off error. So we enhanced the systems robustness.

3在深组合工作方式下，卡尔曼滤波采用了平方根滤波的Potter算法，以避免因舍入误差积累造成滤波器的计算发散，提高了组合系统的稳健性。

Through calculation and comparison, Data can also understand that the accuracy of rounding error and a series of other relevant factors.

并且通过计算比较，也可以了解到数据的精度及舍入误差等一系列有关因素。

A new method for calculating the roundness error based on support vector machine proposed.

提出一种基于支持向量机计算圆度误差的方法。

Hierarchical linear modeling is the most frequently used technique for analyzing multilevel data. In this paper, the twelve key issues in multilevel research and/or using HLM software were reviewed, and provided their exact meanings and feasible solutions. The 12 key issues included intraclass correlation coefficient, sample sizes, formation of organizational constructs, centering problems, fixed effect and random effect, estimation methods, goodness of fit index, explained variation, multicollinearity, robust standard error, level one variance equation, and empirical Bayes estimates.

本文针对阶层线性模式在多层次研究上有关於技术、测量与方法论所遭遇的问题，进行文献整理并讨论其实务意涵，并依据使用时机、抽样议题、资料汇总、分析方法、与模式评估与估算等五方面整理出十二项重要议题与解决之道，包括：组内相关系数的意义与判断准则、多层次研究各层的样本数问题、变数聚合成组织层次问题、中心化的意义、固定效果与随机效果的设定、估计法的选择、适配度的比较、解释变异量的计算、多元共线性的分析、强韧性标准误、第一层误差项变异数与实证贝氏估计值的运用。

By only using synchronized voltage phasor, the fault location accuracy of this method was not affected by the saturation of current transformer.

该算法仅利用电压相量进行计算，避免了由电流互感器饱和所带来的误差影响。

While the self-recording rainfall observation data are insufficient,to improve the accuracy of the design flood,the observed data of precipitation should be adopted.

因此，在当地自记降水资料系列允许的情况下，尽量采用实测降水资料直接计算参数，可避免设计暴雨的误差。

Basing on the analysis of 1 dimension observation,2 dimensions and 3 dimensions points confidence region,a general formular is proposed in this paper,which can be used to calculate the semidiameter of P dimensions super space ellisposid by using some important probability distributions.

在分析一维观测量、二维和三维坐标点置信区间、区域的基础上，利用几个重要的数学分布，导出了线、面这一p维随机向量的置信区域——p维超空间误差椭球半径的计算公式，同时应用实例验证了该通式与常规公式的一致性。

The importance of setting up correct concept of significant digit in analytical chemistry was also emphasesed.

介绍了有效数字与相对误差的关系，有效数字的记录、修约、计算等，强调了在分析化学中树立正确的有效数字概念的重要性。

In addition, the calculating formula of the optimal bevel slotting angle is given.

通过对斜插后齿轮的齿面方程的推导和误差分析，详细论证了该加工方法的可行性，并给出了最佳斜向插削角度的计算公式。

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％。