平方和

A two-layer framework with particle swarms cooperative optimization and a mutation parameter is introduced by the QPSCO algorithm for larger searching scale and quicker convergence. Moreover I the residual sum of squares in least-square principle is introduced into the fitness function to enhance the fitting precision of the sensor position curve.

在QPSCO算法中，采用双层的多粒子群协同优化结构，同时引入参数变异策略，在扩大搜索范围的同时加快该算法收敛；将加权最小二乘法的误差平方和引入适应度函数中，以提高传感器位置曲线的拟合精度，从而实现传感器的优化配置。

However, variance by the definition is based on the difference between each sample value and the mean.

然而，在运用变异数来进行风险之估计与衡量时，由於变异数计算式的主要部份，是以样本观察值与其平均数离差之平方和来计算之。

Based on the samples of over 1000 listed companies at the beginning of Reform of Non-tradable Shares in 2004 and 2006, the share proportion CR1 of the largest shareholder, Z index calculated as the ratio of share ratio of top 2 shareholders and H10 index calculated as the sum of square of share ratio of top 10 shareholders, and Tobin'Q reflecting the value of target company are sele

本文以股权分置改革开始的前后两年即2004年和2006年的一千多家中国上市公司为研究样本，选取第一大股东持股比例CR1、前两大股东持股比例的比值Z指数以及前十大股东持股比例的平方和H10指数作为衡量大股东控制程度的指标，采取托宾Q值来作为衡量公司价值的指标，把公司规模、财务杠杆和第一大股东性质虚拟变量作为控制变量，建立回归方程，实证结果发现三次？

This paper mainly aims at analysis of gastrointestinal mucosa gene expression profiles of paired samples about spleen deficiency of chronic superficial gastritis and normal people group, and spleen deficiency of chronic superficial gastritis and piwei damp-heat group. 9 and 12 different genes are selected by using Wilcoxon signed rank test, the ratio of quadratic sum between groups and within groups and distance-related analysis in the process of feature selection.

通过对慢性浅表性胃炎脾虚证与正常人、慢性浅表性胃炎脾虚证与脾胃湿热证两组胃肠粘膜配对样本的基因表达谱进行分析，在特征提取阶段分别利用Wilcoxon符号秩检验、组间和组内平方和比率、基于相关距离的冗余分析方法，分别得到9个和12个差异基因。

This module contains functions that allow you to calculate square and cube roots to up to 28 digits.

这个模块中包含的函数能允许你计算平方和立方根，最多可达到28位数。

HHI is the sum of the squares of the market shares of each competitor.

HHI是每家竞争对手的市场占有率的平方和。

The sum of two positive integers is 29, find the minimum value of the sum of their squares.

两个正整数之和为29，求此两数平方和的最小值。

There exist nT-rings R such that every element of R is a sum of 3 squares and a sum of 4 cubes.

还证明了存在该类型的nT-环R，R的每个元素是3平方和和4立方和。

Find the difference between the sum of the squares of the first one hundred natural numbers and the square of the sum.

举一个例子，10以内的所有自然数的和的平方与它们的平方和的差这样计算

Can compute the fraction of the total sum of squares that is explained by the model, call this the R-squared of regression

可以计算模型解释的总平方和的比例，并把它定义为回归的R-平方

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。