随机函数

The random spline plays very important role in the approximation and fitting of random function.

随机样条在对随机函数的逼近与拟合中都有重要作用。

Currently all the previous researches about deniability in group key establishment protocols were based on the Random Oracle assumption.

给出了一个标准模型下可证明安全和可证明可否认性的高效的群密钥协商协议，并基于DDH假设和伪随机函数集的存在性假设一同给出了其安全证明和可否认性证明。

Composite materials ; elastic moduli ; method of conditional moments ; stochastic function ; green's operator

复合材料；有效模量；条件矩法；随机函数；格林算子

A b distribution function is proposed to replace the homogeneous distribution function in the particle optimal algorithm. It use a dynamic method to adjust the parameters of b distribution random function to improve the speed and quality of the feasible solution.

提出使用b分布函数来代替均匀分布函数的粒子群优化算法，在产生可行解的过程和迭代过程中动态地调整β随机函数的参数，以提高产生可行解的速度和质量。

In this paper authors introduce the concept of measurability of a fuzzy random function,and solve the basic theoretical problem of measurability of fuzzy random functions successfully.

本文首次引入了模糊随机函数的可测性的基本概念，并且成功地解决了模糊随机函数的可测性这一最基本的理论问题。

Taking the regional seismicity energy as the random function of space and time, the features of small seismicity field in Ningxia and its neighborhood region are studied by the analytical method of natural orthogonal function expansion.

地震释放能量是地震活动的一个本质要素，可看成是空间和时间坐标的随机函数，这个随机函数可称为地震活动能量随机场，或称为地震能量场。

A physical random function is a function that is easy to evaluate but hard to characterize.

物理随机函数是易于求值但难于表征的函数。

A process for which this process, a process for which the receiving process is random, random function randomly selected.

哪一个进程为发送进程，哪一个进程为接收进程是随机的，由随机函数随机选择。

In study of the truss structural dynamic characteristics analysis, randomness of the structural physical parameters and geomtric ones are all considered. The finite element model of the stochastic truss is built and the random functions of its natural frequencies are obtained by use of the Rayleigh quotient. Employing probabilistic distribution function expression for the random functions, through a series of mathematical processing including determination of limits of integrals, variable substitution etc., the probaabilistic density function for the truss natural frequencies are gained to realige accurate calculation for the reliability of the truss natural frequencies.

考虑结构物理参数和几何参数的随机性，通过构建随机参数桁架结构的有限元模型，利用瑞利商公式获得了结构固有频率随机函数的计算表达式，应用随机函数的概率分布函数表达式，通过确定积分区间、变量替换、积分顺序变换等一系列数学上的处理，获得结构固有频率的概率密度函数，进而实现对结构固有频率可靠度的精确计算。

On the assumption that the unevenness of runway profiles along the direction of taxi - ing is a stationary random function,techniques of piecewise constant-speed taxi ing runs and piecewise linear representation of dynamic properties of airplane landing gears are adopted in this paper to approximately simplify the actual nonlinear and nonstationary random vibration prob-lems to the piecewise linear and stationary ones.

在飞机滑行方向跑道路面不平度为平稳随机函数的假设下，采用滑行过程分段等速化、起落架动态特性分段线性化方法，把原非线性非平稳随机振动问题，简化为分段线性平稳随机振动问题。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。