乘法

In general, the main contents and achievements of this paper consist of the following aspects:(1) Based on the characteristics of the transportation and the classic flow-occupancy inverse "V" model, implement polynomial fitting using least-squares algorithm and statistics method on flow curves to detect outliers which are proved to be not accord with practice through the actual implement, then use the moving average model to recorrect the outliers and absent.

本文根据交通领域的流量—时间占有率的倒&V&字型曲线模型，提出了一种基于曲线拟合的交通流异常检测方法，利用三次多项式的最小二乘法拟合流量/时间占有率曲线，并且利用分箱的思想对拟合好曲线上下部分分别采用基于统计的方法划分上下界，有效的识别异常交通流数据。

The major achievement of this paper is: Based on characteristics of the traffic data distribution, execute pattern recognition operations on traffic condition on two dimensions by clustering, then use BP neural network to describe and forecast traffic flow aiming at each pattern. Making use of classic flow-occupancy inverse "V" model, implement polynomial fitting using least-squares algorithm and statistics method on flow curves to detect outliers which are proved to be not accord with practice through the actual implement, then use the moving average model to recorrect the outliers and absent. Make correlation analysis on muti-direction flow queues of the intersection and ones of upriver intersections, choose flow queue with high correlation as assistant one to improve the error tolerance of the prediction system, at the same time we can use the method to give an estimation of flow in intersection with out sensors. We design and implement an SOA(Service-Oriented Architecture)-based UTDD(urban traffic data mining development) with high expansibility and performance, which implement unified management and call of the data-mining application though defining a XML-based description of data-mining process and a common interface to call data-mining process, finally we build traffic flow prediction application model on UTDD.

根据交通流量数据分布的特征，提出基于k-means的二次聚类方法，对交通流量在流量大小和时间上进行模式划分，进而对各个交通流模式进行基于BP神经网络的描述和预测，从而提高模型对流量预测的精度； 2）根据流量/时间占有率倒&V&字形曲线分布模型，提出基于最小二乘法的三次多项式曲线拟合和统计方法的异常检测方法，实际应用表明该方法能够有效识别异常数据，然后根据移动平均算法对异常数据进行修正； 3）基于序列相关性分析，分别对预测方向的交通流量数据序列、上游路口相关序列以及预测路口其它各个方向上的交通流量序列进行分析，选择相似性流量序列，作为辅助序列提供其他没有检测器路口的流量估计； 4）设计和实现了基于SOA（Service-Oriented Achitecture）的高性能、可扩展的智能交通数据挖掘系统UTDD，该系统通过定义基于XML的数据挖掘过程描述和通用的过程模型接口，实现数据挖掘应用的统一管理和调用，最后在UTDD上建立了基于路口流量预测的应用模型。

He was a member of the redactional committees for Psychometrika, Numerische Mathematik, Linear Algebra and Its Applications, and has been editor in chief of the SIAM Journal on Numerical Analysis.

而在用最小二乘法(1east—squares)对矩阵进行近似计算时，目前常用到的一种变换法也是由豪斯霍德创造的，因而被称为&Householder transformation&。

From the research, it is concluded that the sintering mechanism of AlN with Y 2O 3 is the solution reprecipitation process controlled by the rate of boundary reaction.

用最小二乘法回归分析实验数据，依据现有的烧结理论研究后表明，添加Y2O3的AlN材料的中后期烧结机理为相界反应速率控制的溶解—淀析过

Then the measured data were evaluated by least square method and least envelope zone method based on search approximatioss(namely cut and try method in revolutionally).

介绍了直线度误差评定的最小二乘法和最小包容区域法的算法模型与实现方法。

And nonlinear least square method was used to fit the rhe...

并运用非线性最小二乘法，对水泥浆流变参数随时间变化曲线进行了拟合，得出流变参数的计算公式。

Based on the operation rules of generalized multiplication and generalized addition,the improved Gaussian elimination algorithm is applied in power system topology analysis,meanwhile the sparse technique and sectionalization technique are introduce to raise efficiency of topology analysis.

根据广义乘法和广义加法的运算规则，将改进的高斯消元算法应用于电力系统拓扑结构分析中，并引入稀疏、分块处理等技术提高了上述拓扑分析的效率。

A Green's relation of the a dditive redect of an idempotentsemiring S is a congruence of the semiring S, but Green's relation of the multiplicative redect of S need not be.

幂等元半环S的加法半群上的Green关系是半环S的同余，然而S的乘法半群上的Green关系未必是S上的同余。

And it is proved that a semiring S in ■°■l is a subdirect product of a member of ■° and a member of ■l if and only if the multiplicative reduct of S is a subdirect product of a group and a semilattice by using the concept of sturdy frame of type(2,2) algebras.

O∩■°■B和■∩■°■中成员的次直积分解，并利用&(2，2)型代数的坚固构架&的概念，证明了半环S∈■°■l是■与■l中成员的次直积当且仅当S的乘法半群是群与半格的次直积。

First, the thermal resistance of three heat sink related to Re and H / D was obtained separatively, and the average Nusselt number equation of the simulated chip surface under the three heat sinks related to Re and H / D was got separatively by least square method too.

首先，分别获得了这3个热沉的热阻随 Re 数及 H / D 变化的实验数据和对应这3个热沉的模拟芯片表面的平均努塞尔数随 Re 数及 H / D 变化的实验数据；其次，选用合适的函数形式对实验数据采用最小二乘法拟合，得到了此实验条件下关于 Re 、 H / D 及肋片高度 Hf 的准数方程。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。