partial derivative

The difference between an ordinary and a partial derivative was at first not explicitly recongized.

通常的导数与偏导数的区别在一开始并未被人们明确地认识.

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The Duncan-Chang E-B model is used to simulate the non-linear mechanical behavior of soil. With the separation of hydrostatic stress and stress deviator, a partial derivative formulation about displacement and parameter is derived in finite element evaluation.

以能较好模拟土体非线性力学行为的Duncan-Chang E-B模型为基础，通过分解应力球量与应力偏量，导出一个在有限元计算中，位移对参数偏导数的数值计算公式。

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Based on it, the tabular methods calculating the first-order and second-order Boolean partial derivative of the OC type logic function were proposed.

在此基础上提出了计算OC型逻辑函数一阶、二阶布尔偏导数的表格方法。

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In order to optimize the parameters of management, Grading Model are established according the cell performance unction partial derivative parameters, and the parameters are divided into primary parameters of level zero parameters, level 1 parameters, level 2 parameters and level 3 parameters.

为了更好的对参数进行优化管理，我们建立参数分级模型，根据电池的性能与参数的偏导数函数将参数分成零级参数、一级参数、二级参数和三级参数。

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A theoretical method to obtain the second order partial derivative of shear modulus with respect to pressure

一种获得剪切模量压强二阶偏导数G P~〃的方法

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The calculated process of trajectory sensitivity in hybrid systems was deduced, and the partial derivative computing method and the programmed algorithm of trajectory sensitivity were analyzed, and then programs realized them was completed.

详细地推导了混杂系统轨迹灵敏度的计算过程，分析了偏导数计算方法和计算轨迹灵敏度的程序算法，并编程予以实现。

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The partial derivatives of second order to the innovation time and spillover effect for the expected net revenue function were obtained to establish the partial derivative of first order for the correlation between the optimal innovation time and spillover coefficient.

将该收益函数对创新时间和溢出效应系数变量求出二阶偏导数以建立最优创新时间和溢出效应系数之间的一阶导数关系。

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Extremal multi-function, multi-function partial derivative method.

多元函数的极值, 多元函数偏导数的求法.

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Notes on Second Mixed Partial Derivative of Binary Function

关于二元函数二阶混合偏导数的注记

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This paper analyzes the relations of Boolean partial derivative and Boolean difference, gives the equation of the test set for the double fault of a combinational circuit, and introduces the concept of the odd set.

分析了布尔偏导数与布尔差分的关系，给出了基于布尔偏导数的组合电路双故障测试集的方程，引入了奇集合的概念。

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The safe index of design performance is defined as the negative natural logarithm of structural failure probability in this paper. The safe grade of design performance is got by calculating the one-order partial derivative of the structural failure probability to the reliable indication of every structural element.

定义结构失效概率的自然对数的负值为设计性能安全指数，通过计算结构失效概率对各构件可靠指标的一阶偏导数的方法，求出结构的设计性能安全等级。

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WCNS-E-5 consists of fifth-order weighted explicit nonlinear scheme for the inviscid term of Navier-Stokes equations, fourth-order accurate scheme for the viscous term, the corresponding fourth-order boundary scheme and fourth-order difference discretization for grid partial derivatives and temperature partial derivative.

该算法采用的是五阶精度加权显式非线性格式，结合四阶精度的二阶偏导数差分近似、四阶精度的边界格式，同时还对网格偏导数及温度梯度也离散为四阶精度。

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The error is related to the two rank partial derivative of the flux function to each factor and the mean variance distribution of each factor on each grid point.

误差食与该通食函数对各要紊的二阶偏导数和各要紊在网格夕乙侧匕的轰全布的均方差有关。

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So the methods given in this paper can be used to get some simple inverse Z transform. The partial derivative method and deconvolution method are of practical use.

该文的方法适用于求取较为简单的二维逆Z变换问题，尤以偏导数法和逆卷积法更具实际意义。

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We also give the matrix forms of the interface partial derivative with multiple complex interfaces.

给出了任意多个复杂界面情况下,反演时所需的走时对界面偏导数系数矩阵.

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Well, now that it's only a function of a and theta, I know what it means to take the partial derivative with respect to theta, keeping a constant. I know how to do it.

现在它成了一个只关于a和θ的函数，我知道保持a恒定不变，关于θ的偏导数是什么，我知道这怎么做。

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With the terminal value of the partial derivative for boundary variates and their differetial equation, the variates can be solved by backward derivation of the differetial equation.

有了边界变量偏导数的终端值以及它们适合的微分方程，就可以由终端反向积分这些微分方程求解出这些变量来。

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