偏导数

Banach空间中方向偏导数

Directional partial derivative in Banach spaces

根据二阶布尔差分的定义以及二阶布尔差分与布尔偏导数的关系提出了两种计算OC型逻辑函数二阶布尔差分的表格方法，并作了比较。

According to the definition of the second-order difference and the relation between it and Boolean partial derivative , two tabular methods calculating the second-order Boolean difference of the OC type logic function were presented and compared .

对n的偏导数，这里的n是摩尔数。

With respect to n , the number of moles .

与F分布有关的偏导数之性质

Characters of Partial Derivative Related to F Distribution

一种获得剪切模量压强二阶偏导数GP~〃的方法

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

我们已经发现，它由f对x的偏导数给出。

Well , we have seen that it is given by the partial derivative f sub x.

这样我们求，压强对温度的偏导数，结果等于R除以摩尔体积V杠减去b的差。

And then we can take the derivative with respect to temperature , it 's just R over molar volume minus b.

我们令f在给定的一点处，对x的偏导数等于。

Let 's say that partial f of a a partial x at the given point is equal to a.

麦式关系是热力学中非常重要的一个关系式，它给出了四个基本变量S、P、T、V的偏导数之间的关系。

The Maxwell relation are a very important relation in thermodynamics , It provide four basic variable S , P , T , V relation .

事实上，这个方程给出的是，u对t的偏导数。

And , in fact , what the equation will give us is the derivative of u with respect to t.

来看一个非常简单的情形，即在水平面上，不变，函数恒定，，z，equals，constant，，the，function，is，just，a，constant，偏导数变为。

Actually , if we look at a very easy case where this is just a horizontal plane , z0 well , the partial derivatives become just zero .

特别地，在i，j方向的方向导数是，一般的偏导数。

In particular , the directional derivatives in the direction of I hat or j hat are just the usual partial derivatives .

它是这样的，∂f/∂t等于，一个常数乘以x、y、z二阶偏导数的和。

It is the equation partial f over partial t equals some constant times the sum of the second partials with respect to x , y and z.

这很简单，然后我们得到了偏导数，关于a的偏导数，formal，partial，derivative，，of，A，with，respect，to，在这种情形下，a的变化率。

So , that 's pretty easy . Plus , then we have the partial derivative , A little a times the rate of change of a in our situation .

采用数值微商求偏导数的方法，从而使GPS网平差的计算模型非常简洁。强震前重力场等位面二次偏微商异常变化分析

The numerical partial derivative is introduced to simplify the GPS network adjustment model . ANALYSIS OF THE ANOMALOUS CHANGE OF QUADRATIC PARTIAL DERIVATIVE OF GRAVITY EQUI-POTENTIAL SURFACE PRIOR TO STRONG EARTHQUAKES

讨论了OC型逻辑函数一阶布尔偏导数的规范OC展开式。

The canonic OC expansion of the first-order Boolean partial derivative of the OC type logic function was discussed .

但是，让我们考虑一个向量，其分量为对x的偏导数，对y的偏导数，以及对z的偏导数。

But , let 's think of partial with respect to x , with respect to y , and with respect to z as the components of some formal vector .

该方法利用神经网络解决了寻找最佳的拟伪偏导数θ（k，t）的问题，因而具有实时性和快速性等优点。

The method is to solve the problem that using neural networks to search for a best " Mimetic Pseudo Partial Derivative ", so it has virtue of the fasting and real-time traits .

本文借助MATLAB的符号运算程序可给出偏导数和其他相关函数，使得可靠度指数计算变得容易。

But to compute the reliability index of a pipeline could become much simpler if the MATLAB program library ( Symbolic Math Toolbox ) is used to find partial derivatives and other functions .

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。

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 .

为了找到f关于这些新变量的偏导数，中间需要用到∂x、∂，起初定义f时，使用的变量是x和。

To find the partial of f with respect to some new variables y you use the partials with respect to the variables y that f was initially defined in terms of x and y.

也就是说向量场的第一个分量，是f关于变量x的偏导数，第二个分量是，f关于y的偏导数。

That means that the first component of a field is just the partial of f with respect to some variable x and the second component is the partial of f with respect to y.

这就是说，可以很简单的写出dG在，恒定压强下对温度的偏导数，是负。

That is , it 's easy to write down straight away that dG with respect to temperature at constant pressure S is minus S.

本文提出了一种新的混沌控制方法.该方法利用系统参数与系统的Jacobi行列式绝对值小于1的本征值之间的偏导数作为调节因子控制混沌。

This paper proves a chaos control method which use the partially differentiate of system for eigenvalue of Jacobi determinant as adjusting factor .

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。

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

根据退化解在（a，b）中是否有连续的一阶偏导数，研究了解的两种渐近形式，从而导出边界层和角层现象。

Depending on whether the reduced solution u ( t ) has or does not have a continuous first-derivative in ( a , b ), we study two types of asymptotic behavior , thus leading to the phenomena of boundary and angular layers .

可解决BP算法中误差函数对权值的偏导数计算问题以及执行器输出的脉动变化和饱和问题。

It can be used to solve two problems , that is , the evaluation of the partial derivative of error function with respect to weight in BP algorithm , and the fluctuation and saturation of the actuator output .

应用Banach空间中的广义Schauder基，建立了Banach空间中方向偏导数理论，给出了几个重要定理和泛函极小化序列的坐标法构造。

The theory of directional partial derivative in Banach spaces was established . Some new concepts , important theorems and the coordinate method of minimizing sequence were given .

采用偏导数法求解动压气体润滑Reynolds方程，给出动压气体轴承动态刚度和动态阻尼系数普遍适应的计算方法。

A novel and universal computational method for obtaining the dynamic stiffness and dynamic damping coefficients of aerodynamic bearings is presented by means of the partial derivative method applied to the gas-lubricated Reynolds equation .

对偏导数算法（PDA）和线性内插算法（LIA）两种改正数模型化方法进行探讨，并说明两种方法的优缺与应用范围。

Here we expound two approaches to GPS corrections model by Partial Derivative Algorithm ( PDA ) and Linear Interpolation Algorithm ( LIA ), then probe their advantages and disadvantages .