substitute function

In order to improve computational efficiency, this paper introduces RBF Neural Network to substitute structural performance function evaluations in Importance Sampling Monte-Carlo simulations and proposes RBF-Monte-Carlo approach for reducing structural analyses.

鉴于此，在蒙特卡罗重要抽样方法的基础上，提出了利用RBF神经网络替代原结构功能函数的RBF-蒙特卡罗方法，以提高工作效率。

As the backbone of modern comprehensive traffic transportation system in the land route of China, the railway has the important position and function difficult to substitute in modern logistics system.

铁路作为中国陆路现代综合交通运输体系的骨干，在现代物流系统中具有难以替代的重要地位和作用。

Substitute it into the Lagrange function , and then we get dynamic equation of the system.

由运动学关系式和拉格郎日方程得到了系统的动力学模型.

In the FoxPro data stock system, the essential utility of function Len() is to measure the length of character string and the utility of function& is to substitute for the value of character-typed internal storage variables.

在FoxPro数据库系统中，len（）函数的基本功能是测量字符串的长度，&函数的基本功能是替换字符型内存变量的值；

To overcome the false result with piecewise constant regions produced by the binary zero-crossing decision process, a hyperbolic tangent function is used to substitute the symbol function, governing softly the varieties of gray levels of pixels beside the zero-crossing of edges.

为了克服二值的零交叉决策过程导致的虚假的分片常数图像，利用双曲正切函数代替符号函数，柔和地控制边缘的零交叉点两侧像素的灰度值变化。

The paper analyzes the demerit of conventional reliability evaluation method of function substitute model ( FSM ).

针对功能替代模型的定义,分析了原有的可靠性评估方法存在的不足.