随机性

The nonlinearity, randomness, determinability, and similarity of hydrological phenomena were analyzed. The self-similarity and fractal characteristic of floods events for a certain duration (e. g. a season of a year) provide a theoretic basis for adoption of fractal theory.

分析水文现象的非线性、随机性和确定性、相似性，以一定尺度范围内洪水表现出的自相似性和分形特性，作为应用分形理论的论据。

Atrium fire ; fire Duality ; determinability ; probability ; comprehensive simulation

大空间建筑火灾；火灾双重性规律；确定性；随机性；综合模拟评估

All kinds of geological processes not only make rock masses discontinuousness,heterogeneity and anisotropy, which result in the variability of rock masses'parameters and determine the indeterminacy of forms of rock failure and randomicityof engineer loads.

各种地质作用不仅使岩体具有不连续、非均质和各向异性等固有特性，导致岩体参数表现出较大的变异性，还决定着岩体破坏形式的不确定性和工程荷载条件的随机性。

The experiment result shows that this chaotic synchronization secure communications method based on several chaotic systems switch is better in security because of the transmitter can be switched and the chaotic carriers can be changed discretionarily.

由于发送系统的可选择性，导致保密信号的多样性和随机性，因此该保密通讯方法具有更好的保密性能。

Statistic analysis indicated that three kinds of irregular components show complicated random characteristics, and their probability density distributions change with increasing gas velocity, that is, irregular occurrence time fluctuations of all three kinds of elements of heterogeneous structure (the dilute phase, the dense phase and the dilute/dense cycle elements) evolve similarly from symmetric distribution similar to Gauss distribution at low gas velocities to double-peak distribution at medium gas velocities, and become dissymmetric single-peak distribution at high gas velocities.

相关分析表明：动态行为中的三类非规则波动呈随机性；直方图分析表明：随表观气速变化，非均匀结构的各种非规则波动的概率密度分布均具有复杂的演变；其中，对于时间非规则波动，其演变趋势是：小气速下的单峰分布、中气速下的双峰分布和高气速下的非对称单峰分布。

Fractal theory is a new theoretical non-linear tool to study complicate phenomena in nature, and has a powerful function in describing and evaluating the phenomena with continuous in scale, stochastic in distribute or erose in shape.

分形理论作为研究自然界复杂现象的非线性理论新工具，在描述评价具有层次连续性、随机性或不规则性等特征的对象方面，具有很强的功能。

At first, this article gives the definition of EMH according to Fama s explanation, at the same time, it shows the shortcuts and is confronted with some challenges.

然后，对中国股票市场的弱式有效性进行了游程检验、股票收益率随机性的自相关检验和单位根检验，同时对检验的方法进行了介绍。

Fuzzily control is one of the present research directions, it does not need to set up the accurate mathematics model, and is especially suitable to urban traffic control of greater randomness.

模糊控制是当前的研究方向之一，不需建立被控对象的精确数学模型，特别适用于具有较大随机性的城市交通控制。

The growing international competition under the rapid development of economy and societybrings decision process randomicity, ambiguity, diversity, game playing and groupment, andrequires higher scientificity for decision making. Therefore, group decision theories and methodsfor uncertain problems should be given intensive study.

随着经济社会的高速发展，国际竞争日趋激烈，使得决策过程充满了随机性、模糊性、多样性、博弈性和群体性，对决策的科学性提出了更高的要求，因此必须深入研究能够处理不确定性问题的群决策理论与方法。

In order to increase the diversity of population, MFCMGA uses idiotypic immune network theory to improve the selection operator of SGA. Meanwhile in order to decrease the randomicity of SGA, the crossover probability, crossover position and mutation probability are adjusted dynamically by using fuzzy inference, which is based on analyzing the heuristic fuzzy relationship between algorithm performance and evolutionary parameters from the viewpoints of environment, population, individual and gene.

该算法利用免疫系统独特性网络学说，改进标准遗传算法选择运算子，提高了种群多样性；同时从环境、种群、个体和基因角度，全面分析算法寻优性能和各种进化参数的启发式模糊关系，采用模糊推理动态调整交叉率、交叉位置和变异率，减小了标准遗传操作的随机性。

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