查询词典 initial approximation

In the new model, the similar approximation can be obtained from the integral expression of vector potential and the Lorentz gauge, therefore a set of state equations like the MNA in traditional PEEC can be built.

在本文的方法中从矢量磁位的积分表达式和洛仑兹规范出发，可导出与传统PEEC模型中的改进节点法方程相应的状态方程。

In the hybrid algorithm, we use FEM to model the EM field in the interior domain, and then use the integral equation to compute the field on the boundary (to provide an artificial boundary condition for FEM system), and the finite element approximation is also convenient for deriving discrete equations of the integral equation.

混合法的原理是引入一个包围非均匀目标体的虚构边界，在边界内部的场用有限元法模拟，在边界外部的场用积分方程表达，二者在边界上通过场的连续性耦合起来。

Its universal approximation has been proved by using differential intermediate value theorem and Weierstrass theorem.

笔者采用微分中值定理和Weierstrass定理证明它的通用逼近性。

The error caused by interpolation and approximation is proven to be controllable.

还证明了插值和逼近所引起的误差是可控的。

Relative derivatives of such nodal interpolation function are also calculated by numerical approximation.

相对的导出节点内插函数也是经由数值近似计算。

Therefore,we know that under the mean of statistics, interpolation operators are not only ideal algorithm for realizing optimal approximation polynomials computation,but also ideal computing tool for realizing optimal information- based operation,and the property of their recover functions are good.

这说明了在统计学意义下，插值多项式算子一方面是实现最佳逼近多项式计算的理想算法，另一方面(来源：ABCdd论文网www.abclunwen.com)是实现最优信息基算法的理想计算工具，且具有性质优良的恢复函数。来源：AB03c303C论文网www.abclunwen.com

Based on polynomial interpolation and approximation theory,a Chebyshev orthogonal basis neural network is constructed in this paper.

根据多项式插值和逼近理论构造一个切比雪夫正交基神经网络，其模型采用三层结构并以一组切比雪夫正交多项式函数作为隐层神经元的激励函数。

Using the approximation of steady collisional-radiative equilibrium model, the interstage line intensity ratios of the K-shell lines of aluminum were given as a function of electron temperature and density.

利用稳态碰撞辐射平衡近似条件下的等离子体光谱辐射动力学模型，给出了Al激光等离子体Ly β线与He β线强度比以及Ly γ线与He γ线强度比与电子温度的函数关系。

Based on the optimal approximation of spline interval wavelet,theinterpolation error estimation is given.

Daubechies的估计。

Pair approximation and moment methods have the advantages of overcoming analytical intractability of computer simulation and building a spatially stochastic model.

其优点是可以系统地进行数学分析处理，克服了空间模拟耗时和随机性带来的缺陷。

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样