查询词典 least squares

Theoretical analysis and simulation comparison were carried out for least-squares and Forier regularizing algorithms of temperature fields image reconstruction.

目前还没有建立非常有效的大型锅炉炉膛火焰温度场可视化测量手段，因此寻求更为准确，可靠的锅炉炉膛火焰检测技术。

These selected variables were used in the determination of total volatile alkaloids and total nitrogen in tobaccos by partial least squares method.

偏最小二乘法[3]和主成分回归[4]是NIR技术中常用的两种化学计量学方法，曾被认为对噪音信号不敏感，在对庞大的数据矩阵进行处理时不需要变量筛选，但大量的研究工作表明，有效的变量筛选可以改善模型的预测能力和减少模型的复杂程度[5～8]。

Works on the bending roll system of four-roll rolling mill, the workroll shape variation caused by the force of bending roll and the contact stress between rolls was researched with the FEM software ANSYS, the maximum deformation of the work roll was calculated, and the curve of the gap adopting the Least-Squares method was fitted, which set the base of the further calculation of load-gap shape.

以四辊轧机的弯辊系统为研究对象，利用有限元分析软件ANSYS研究弯辊力和辊间接触应力引起工作辊形状的变化，计算工作辊弯曲的最大变形量，并用最小二乘法对辊缝曲线进行拟合，为进一步计算有载辊缝形状提供可靠的理论依据。

The empirical part choose 100 listed companies in Shanghai Stock Exchange market as the samples, analyzing their annual report data of 2005,2006 and 2007, using least squares regression analysis. I chose seven items to reflect the character of corporate governance. They are shareholding ratio of the biggest holder, the proportion of outstanding shares, the design of the Audit Committee, the general manager and chairman of the settings, the scale of the Board, the proportion of independent directors, and the share of executives.

实证部分以上海证券交易所上市的100家中国上市公司为研究样本，采用这些上市公司2005、2006和2007年的年报数据，运用最小二乘法进行回归分析，解释变量分别是第一大股东持股比例，流通股比例，高管人员持股比例，总经理与董事长的设置情况，独立董事比例，董事会规模，是否设计审计委员会。

Fish meal ; Meat and bone meal ; Near infrared reflectance spectroscopy ; Partial least squares

鱼粉；肉骨粉；近红外反射光谱；偏最小二乘

This paper introduces the power plant from coal Bucket instantaneous flow and the relationship between the current round of fighting curve fitting method, analysis and realized the relationship of the three B-spline curves and least-squares method of polynomial curve fitting.

能帮忙翻译英文摘要么？？谢谢大家了本文介绍了电厂斗轮机瞬时取煤流量与斗轮电流之间关系曲线的拟合方法，分析并实现了该关系曲线的三次B样条和最小二乘法多项式曲线拟合。

Using these x,y measurements (determined to a fraction of a pixel) and the comparison star coordinates (taken from a suitable reference catalogue ), the program should then do a least-squares plate-constants solution to derive the unknown coordinates of the minor bodies.

利用这些像素坐标以及比较星的坐标（从一些合适的比较星星表获得），软件将进行一个LSPC操作来计算小行星的坐标，很多软件做不到这一点。

In this paper ,we present a class of new factorized quasi-Newton algorithms for nonlinear least squares problems which are based on new quasi-Newton equation and factorized quasi-Newton method.

本文根据具有更高的二阶曲率逼近的新拟牛顿方程，结合针对非线性最小二乘问题特点的分解式算法，提出了基于新拟牛顿方程的分解拟牛顿算法。

This paper considers nonlinear least squares problems,connecting new quasi-newton equations which has a higher-order curvature approximation with factorized quasi-newton method which is symmetric.

本文考虑非线性最小二乘问题，将具有更高的二阶曲率逼近的新拟牛顿方程和具有对称性的针对非线性最小二乘问题的分解方法结合起来。

In the IEEE 50 generators test system, the proposed on-line voltage stability monitoring method is tested, the recursive square-root least squares filter with a forget factor is applied to track the parameters, and the results indicate that it can identify the critical bus effectively so as to realize on-line voltage stability monitoring.

将提出的电压稳定在线监测方法在IEEE 50机测试系统进行了仿真，参数辨识采用递推的带遗忘因子平方根最小二乘算法，结果表明它能有效地识别出电压稳定薄弱节点、实现电压稳定在线监测。

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。