随机性

In order to describe the random-like feature of chaotic signal, the statistical analysis method for discrete time chaos system is studied. A domain iterative algorithm for numerical estimation of the invariant probability distribution is presented, which is the foundation for the statistical analysis and processing of chaotic signal.

针对混沌系统的随机性特征，本文研究了离散时间混沌系统的统计分析方法，并给出了一种基于Frobenius-Perron算子的区间迭代算法用于混沌映射不变分布的数值求解，该方法在样本数较少时，仍可以获得不变分布的良好估计，为混沌信号进一步的统计分析和处理奠定了基础。

The natural frequency can be calculated using the numerical value method for the equation and a facility method to solve the natural frequency of chain structures is obtained.

建立了随机性结构参数的链式机械系统动力特性分析模型，利用Monte Carlo数值模拟方法获得系统的特征值随机变量的数字特征。

For the order selection of polynomial model is generally based on our experience,it has great randomness.

对多项式阶数的选择，一般根据经验选择，但这具有很大的随机性。

And points out that the random of search range could lead to repeated search or overlong search time.

但存在由于搜索范围的随机性导致重复搜索及搜索时间过长。

The value of the peak factor was discussed with the crossing theory and reliability theory.

风荷载是结构设计中的重要荷载，具有较强的随机性。

In the biological systems of nature, because of randomicities in the development of the biological populations, it is very effective to simulate the population dynamics. In this field, there are many kind of ways to solve problems in biology, Penna model, proposed by T.

在生物界中，由于生物种群的发展变化有许多的随机性，因此，用计算机来模拟生物群体的演变发展也取得了一定成效，1995年T.J.P。

However, demand randomness, product perishability and heated competition have caused risks for each business opportunity.

然而，需求的随机性、产品的易逝性和市场竞争的激烈性使得每个商业机会都伴随风险，即使是最好的四川大学硕士学位论文价格与存量决策也不能够完全消除收入的不确定性。

The pervasiveness of these self-selection issues has led researchers to devise experiments that allow them to ensure that participation in a programme is determined essentially by chance.

自选对象问题的普遍存在使研究人员发明新的，可以保证某项活动的参与主要是通过随机性来决定的试验。

Due to the Randomicity, diversity and complexity of distribution of meteorite strike event, the real distribution of plagioclase is pretty complicated, but it is based on the theoretical distribution.

由于地球表面陨击事件分布的随机性、多样性以及复合性，有关斜岩实际分布的情况比较复杂，但都以上述理论分布特征为基础。

The empirical fact of the cases shows that the system is passive, unauthorized, precedented, non-systematic, at random and objective.

而已有的案例以经验事实表明，宪法解释与违宪审查制度具有被动性、非授权性、先例性、非制度性、随机性与客观性。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐