导数

Cortex Fraxini ; Aesculin ; Secondary derivative differential pulse polarography ; Quantitative determination

秦皮；秦皮甲素；二阶导数差示脉冲极谱法；定量分析

According to the objective of second-order derivative related to curvatures, it is proved that there is no difference whether we insert a knot or not. And it presents a characteristic of cubic Hermite interpolation curves.

如果以与曲率有关的二阶导数为目标，证明插入节点与不插入节点的情形是一样的，体现三次Hermite插值曲线的一种特性。

Then the spatial localization of the main well-known visual neuron's receptive field models such as DOG function, LOG function, higher order derivatives of Gaussian functions and 1—D, 2—D Gabot function models is quantitatively analysed.

如对通常被作为建立模型的主要根据的&最优的空间定域性&判据的物理意义和适用性也没有得到深入的论证，而且已有的主要几类感受野模型，如DOG函数、LOG函数、高斯函数的高阶导数和一维、二维Gabor函数等模型在空间分布形态上难以准确反映系统中神经元感受野的形态和信息处理机制等等。

The temperature curve of flue gas was fitted by the least square methods during the sintering process, and then 4 flexions of the temperature curve were calculated by solving a two-order derivative of the temperature curve.

提出利用最小二乘法拟合烧结废气温度曲线，求曲线方程的二阶导数计算出烧结废气温度的四个拐点。

The varible of the response system is substituted with the variable of the drive system and the forcing synchronous components equal to zero so that the response system synchronizes with the drive system.

将驱动系统的变量替代响应系统的变量，使Lyapunov函数导数的强迫项变为0，响应系统与驱动系统达到同步。

Several kinds of new convexity are introduced with Gateaux derivatives as an aid, under the assumption of which optimality sufficient conditions are obtained.

借助Gateaux导数引进了几种新的凸性，在新的凸性假设下得到了最优性充分条件。

Such functionals can for example be formed as integrals involving an unknown function and its derivatives.

譬如，这样的泛函可以通过未知函数的积分和它的导数来构造。

Two edge detection operators of second de ivative model, the discrete Laplacian of Gaussian and Laplacian of binomial distribution operators are introduced in this paper.

摘要本文首先导入了离散的高斯-拉普拉斯及二项分布--拉普拉斯两种二阶导数型边缘检测算子。

Equidistance point and difference theory in theory of function approximation are studied. Meanwhile, the relation among difference, difference quotient and derivate is revealed. By drawing Lagrange's and Cauchy's theorem of mean on difference and Taylor's formula into difference function, four theorems, such as Lagrange's theorem of mean on difference, are concluded in simple way. On the basis of these conclusions, the asymptotic property of middle point is studied, a series of new conclusions are drawn and the discussions on the asymptotic property of middle point in differential mid-value are summarized.

对函数逼近论中等距节点和差分理论进行了研究，揭示了差分、差商与导数之间的联系；将Lagrange中值定理、Cauchy中值定理、Taylor公式引入到差分函数中，简明地推导出Lagrange差分中值定理等4个定理，并在此基础上对&中间点&的渐近性进行了研究，得出了一系列&中间点&的渐近性的结果，概括了有关文献对微分中值公式的&中间点&的渐近性的讨论；给出的引理改进了函数逼近论的证明方法，精简了函数逼近论中的一些内容。

In order to study the relationship between plus contour and physiological factors,maximum of the derivative of plus wave was presented which is a new characteristic parameter,whose ad- vantages are high sensitivity and simple at calculation.

为了研究脉搏波波形特征与生理因素的关系，提出了脉搏波导数最大值这一新的特征参数，该参数具有灵敏度高、计算简单的优点。

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。