随机

Some fundamental properties of fuzzy probability characteristic, such as the fuzzy mean value function, fuzzy covariance function and fuzzy variance function of fuzzy stochastic processes are proved.

3研究了实模糊随机变量的数学期望、方差等模糊概率特征的基本性质以及计算方法，并且讨论了实模糊随机变量的独立性与分析运算的若干基本性质

Random Sequence is very important in cryptographic technology, just as the famous cryptograph ! st Bruce Schneier said: within the six elements of Cryptographic Technology, the generation of Random Sequence is seldom discussed, but it is also important as others.

随机序列在密码技术中是很重要的，正如著名的密码学家Bruce Schneier所说：在密码技术的六个要素中，随机序列的生成是谈论最少的加密要素，不过它也和其它要素一样重要。

Random Sequence is very important in cryptograph ic technology, just as the famous cryptograph ! st Bruce Schneier said: within the six elements of Cryptograph ic Technology, the generation of Random Sequence is seldom discussed, but it is also important as others.

随机序列在密码技术中是很重要的，正如著名的密码学家Bruce Schneier所说：在密码技术的六个要素中，随机序列的生成是谈论最少的加密要素，不过它也和其它要素一样重要。

The current sensitivity probability density function of energetic materials was deduced based on Frank-Kamenetskii parameter and resistance supposing as stochastic variable of normal distribution, by the application of the probability density formula of function in two random variables.

将Frank-Kamenetskii参数和电阻假设为正态分布的随机变量，应用二维随机变量函数的概率密度公式，推导出了含能材料电流点火感度的概率密度函数。

A SQL based algorithm to abstract random record set from database is proposed in this paper.

本文提出了一种基于SQL语句的从数据库中随机读取随机记录集合的算法。

Methods 40 selected patients treated with fixed appliance were randomly divided into two groups （n=20 each）, the fluoride mouth rinse test group and the placebo control group.The number of decalcified teeth and the severity of enamel decalcification were evaluated and compared after three months and after six months.

从正在接受固定正畸治疗的恒牙列患者中随机选择40例上前牙明确诊断为釉质脱矿的患者，随机分配到试验组和对照组，每组各20例，分别比较3个月后及6个月后牙釉质脱矿程度的变化。

A general model of random walk in time-random environment in any denumerable space is established.

文章在可数状态空间中建立了时间随机环境下随机游动的一个广泛的模型。

In the same condition, there is great difference between response of random structure and that of determinate structure.

随机和确定结构计算的结果表明，当考虑参数随机时，位移响应将发生变化，有必要考虑随机的情况。

Firstly, according to the difficulties in the optimization of chemical engineering and the intrinsic disadvantage of deterministic optimization algorithms, this work analyzed the importance and advantage of stochastic algorithms, and proposed some important aspects in research on them. Secondly, genetic algorithm was applied to two problems of data driven modeling, one of which was combination problem, the other was mixed integer nonlinear programming. Thirdly, systemic investigations were made on the basic structure, dynamic behavior and modifications of particle swarm optimization. Lastly, two kinds of proposed PSO algorithms were applied on calculation of phase equilibrium, which is nonconvex optimization.

本文首先根据化工优化中存在的困难和确定性优化算法内在的缺点，分析了随机优化算法的重要性，并提出研究随机优化算法应注意的问题；其次，将遗传算法应用于两个数据驱动建模问题，一为组合优化问题，一为混合整数优化问题；再次，从粒子群优化算法的基本结构、运动行为、改进方法做了系统的研究：最后，将提出的两种改进粒子群优化算法应用于相平衡计算问题，为非凸全局优化问题。

In a sense,it can be seen as the time when semi-dynamic system is killed ,or as the time the first random jump of piecewise deterministic Markov process .

它直观上可视作半动力系统随机中断的时刻，亦可视作逐段决定马尔可夫过程的首次随机跳跃时刻。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。