查询词典 approximate differentiability

Some stochastic Galerkin methods, combining the Askey polynomial chaos expansion for the stochastic inputs and the spectral method in the physical space, are proposed to approximate some popular model problems.

研究的算法基于随机方向上的Askey正交多项式谱分解和物理空间方向上的谱方法。

A truncated Volterra series expansion, whose polynomial number can be determined by error criteria, was used to model the biomedical signal component. Based on Volterra we proposed an adaptive filter that could approximate and extract the signal in noise corrupted ECG data efficiently.

利用误差准则确定的Volterra序列展开能很好模拟生物信号成份，而基于Volterra序列的自适应滤波器能有效模拟ECG成份从而达到去除信号中噪声的目的。

First backward simulation was made by using population parameter method to quickly get an approximate workblank,and then forward simulation was made by using incremental method to modify the workblank outline for the purpose of getting comparatively accurate outline dimension.

介绍了一种用于冲压毛坯设计的新方法——基于正、反向模拟的毛坯外形设计技术，即先用全量法进行反向模拟，快速得出近似的坯料，再用增量法进行正向模拟修正毛坯的外轮廓，从而得到比较精确的坯料尺寸。

However, a great lot of fuzzy rules are needed to approximate a complex nonlinear system, which can lead to a great lot of LMIs related to the number of fuzzy rules. In this case, positive definite matrix P might not exist.

可是，当需要大量的模糊规则来逼近一个复杂的非线性系统时，就导出与模糊规则数有关的大量LMIs，这可能会导致正定矩阵P不存在。

Another way to approximate the posterior state distribution is Monte Carlo simulation.

对目标后验状态分布近似的另一条途径是Monte Carlo仿真。

The infinite-dimensional inference technique was available to precisely approximate the posterior distribution of the noise.

提出一新的非参数贝叶斯推理算法来辨识任意复杂的多模噪声分布，采用无穷维推理技术，能够较为精确地逼近噪声的后验分布。

In the numerical calculation of the tunneling transmission probability we adopt the multistep approximation to approximate the whole potential barrier.

在电子穿隧机率的数值计算上，使用多阶近似的方式成就整个位能障的穿隧机率之计算。

A Study on Fraunhofer Double-Slit Diffraction by Applying Simulation Technology;2. Based on Kirchhoffs theory,the approximate intensity formulas of double-slit diffraction of Gaussian Beam is derived under paraxial approximation with power series expansion methods.

依据基尔霍夫衍射理论，利用幂级数展开的方法推导出旁轴条件下高斯光束双缝衍射的近似光强计算公式，并通过数值计算对双缝衍射的基本特性进行了讨论，得出了与其他文献一致的结论，得出了高斯光束下的双缝衍射极小值点比平行光束双缝衍射的极小值点向外移，观察屏中心光能变小；光强分布可由激光斑在衍射屏处的参数调制的结论。

An approximate feedback linearization AFL approach was presented which combined with probabilistic robustness analysis and design PRAD for boiler turbine controller design .

文中将一种近似反馈线性化方法和概率鲁棒分析设计方法结合起来设计机炉协调控制器。

In the dissertation, we propose a practical method of vehiclelogo location from coarse to fine. The approximate scope of vehiclelogo is first confirmed by preexistent knowledge, then its finer position is found by edge detection and morphology operators, and finally it is located precisely by relation match operator in a very small scope.

本文从人眼的视觉特性出发，提出了一种实用的从粗到精的车标定位算法，即先根据先验知识确定车标的大致范围，再运用图像处理中的边缘检测和形态算子确定较准确的车标位置，最后在极小的范围内用相关匹配算子得到车标的精确位置。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。