求值

The definition of Centre of Mass and NMI feature is proposed and the principle and methods of Threshold calculation, Image segmentation, Target recognition and tracking are presented.

文章给出了运用连通线多级切割方法实现阈值求取、图像分割、目标识别与跟踪的技术技巧。

The relationship between PID parameter and the root of the characteristic equation of the closed loop control system has been found out directly.

本文直接找出PID参数与闭环控制系统的特征方程的根之间的关系，只要使特征方程的根在z平面的单位圆内任意取值，然后再求出相应的PID参数，则闭环控制系统必然是稳定的。

Calculation of ride index and statistic characteristic is the core.

依据采集到的试验数据进行动力学性能指标——平稳性指标的计算和求取各信号的最大值和最大平均值是试验数据处理的主要工作之一。

A new definition, expectation of soil moisture content (E/ cm·g·g-1), was introduced in order to reflect better characteristic of soil moisture in root zone.

引入土壤含水率期望的概念，建立了含水率期望值与根系分维值之间的函数关系，并求出了适宜胡杨生长的土壤含水率期望值的范围。

The program is the main description of the matrix operations, including the basic matrix operations, matrix inverse, matrix singular value decomposition, and the characteristic value and characteristic vector solution and so on.

详细说明：该程序是主要描述的是矩阵运算，包括矩阵的基本运算，矩阵的求逆，矩阵的奇异值分解，以及特征值以及特征向量的求解等等。

Stand on a base of upper study, this paper choose distribution map of agriculture and stock raising in seven different historical age as basic material, sum up ten agro-geology environmental factors into Loess plateau Area's AEG system, and cover all these factor's component parts map on distribution draft of every period's agricultural and pastrol, then measure the occupying proportion, bring results into fomula of factor information entropy, finally, take average value of ten factor's information entropy in each period as its characteristical AEG system entropy value.

在以上研究的基础上，论文选择黄土高原地区七个历史时期的农牧业分布图作为基本资料，将该区的十个地质环境要素纳入农业环境地质系统中，将其类别分布图与上述农牧业分布图进行叠加量测，结果代入要素系统熵计算公式，求得了十个农业地质环境要素在各个历史时期中的系统熵，对每个历史时期的这十个熵值求算术平均值就获得了该历史时期黄土高原地区总的农业环境地质系统熵。

Transport and sorption of three common subsurface contaminants, phenol, chlorophenol and toluene, from aqueous phase into soil grains were investigated. Two soils from southern Taiwan, Nanchi and Dashi, were selected as representative soils.

中文摘要本研究以高雄楠梓与大树两地之土壤作为代表性吸附剂进行两种代表性土壤之单颗粒批次及管柱吸附实验，并应用具有物理意义之传输模式模拟动力实验值，以期求出三种有机污染物在土壤颗粒中之孔隙扩散系数，进而预测不同污染物浓度之吸附动力行为。

Comparing with the conventional algebraic method, with Circle Diagram Analysis it is easier to obtain and understand some conclusions of Fourier algorithm, for example, the phase and the amplitude of a certain order harmonic.

与代数方法相比较，采用圆图分析法更容易得出和理解富立叶算法的一些结论，如可一次求出某次谐波的幅值与相位。

The numerical solutions of the effectiveness factor for each model have been obtained by orthogonal collocation method and compared with experimental values under similar conditions.

用正交配置法求取数值解，并分别与对应的实验值比较，对各个模型的误差进行分析，提出了不同计算目的的适用模型。

Through a discussion on the suffix features of miniterm and maxiterm ,this paper offers a suffix calculating approach to miniterm and maxiterm in principal disjunctive normal form,principal conjunctive normal form determined by disjunctive normal form,and conjunctive normal form of propositional formula.

通过极小项和极大项的下标特征的讨论，给出了由命题公式的析取范式、合取范式而确定的主析取范式、主合取范式中的极小项、极大项的下标计算方法，从而简化了由繁杂的命题公式推演或真值计算求主范式的计算过程。

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。