查询词典 discretization

The essence idea of restoration based on Total Variation is that translate the problem into minimum of energy functional with TV regularization, then the Partial Differential Equations are got from the principle of variation, finally after discretization the optimal resolution with the numerical methods is obtained.

基于整体变分的图像恢复概括的说就是把图像恢复问题形式化为带有整体变分正则化项的图像能量泛函极值问题，采用变分原理将其中的最小化问题转为所要求解的偏微分方程，即Euler-Lagrange方程，利用数字图像本身的离散特征使用适当的数值方法来求它的最优解，最后达到逼近原始图像的目的。

A novel quadratic penalty function based discretization algorithm for Newton optimal power flow is presented.

摘 要 提出了一种新的基于正曲率二次罚函数的最优潮流算法中离散控制量的处理方法。

This section further presents three kinds of computation schemes, which are discretization schemes based on linear interpolation, locally quadratic interpolation and mixed quadratic and cubic interpolation.

吴微在[21]中使用三角剖分及外心对偶剖分给出了解双调和方程的基于Ciarlet-Raviart变分原理的混合广义差分法，理论分析部分采用了[26]中的有关思想。

In the second chapter, generalizing the contractilities and asymptotical stabilities for multi-delay integro-differential equations. Under proper stepsize, we obtain the discretization schemes of Runge-Kutta methods with the compound quadrature formula and the Pouzet quadrature formula, and besides, derive the global and asymptotical stabilities. Moreover, the numerical experiments show that the presented methods are highly effective.

第二章，考虑了多延迟情形下的积分微分方程，推广理论解的收缩性与渐近稳定性结果，在适当的步长下，利用复合求积公式与Pouzet求积公式扩展Runge-Kutta方法，获得离散的计算格式，并且证明了方法是数值稳定的，此外，数值试验表明此计算方法在实际应用中是非常有效的。

At first, the small step synthesis method is applied to get the discretization of an anolog network, thus the discrete recursion formula in state space is obtained.

首先应用小步合成方法将模拟网络离散化，得到状态空间中的离散递推公式。

Based on a "heterogeneous" discretization which cares about the fine scale only on small representative region of the spatial domain, FDHMM relies on the use of two different schemes for original equation, at different grid levels.

基于一种"非均质"离散格式，FDHMM在小的代表性的空间区域内求解细尺度问题，FDHMM是通过在不同的网格水平上使用不同的差分格式来处理原始方程来实现的。

It is shown that some problems of this new class, together with a suitable time discretization ,represent the schematization of the original problem corresponding to well known numerical integration schemes.

它被显示这个新的班级一些问题，连同一个适当的时间离散化一起，表现对广为人知数字的整合方案符合的最初问题的 schematization 。

By the agency of discretization of mathematical model, it programs the digital simulation program of saturation nonlinearity for PI regulator, and simul...

为研究电力拖动系统的数字仿真提供了实用的仿真模型。

The method does not involve the discretization of the soil or piles and it follows the same analysis process and the content of stiffness matrix is just related to the number of pile and soil nodes under foundation cap.

应用该方法不需要划分桩-土体单元，分析中的计算矩阵仅与基础中桩数和筏板下土节点数量相关而与其他变量无关，分析过程简洁通用。

The method does not involve the discretization of the soil or pile s and it follows the same analysis process and the content of stiffuess matrix is just related to the number of pile and soil nodes under foundation cap.

应用该方法不需要划分桩－土体单元，分析中的计算矩阵仅与基础中桩数和筏板下土节点数量相关而与其他变量无关，分析过程简洁通用。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。