随机函数

The appendix also gives the application for example, Z transform table, matrix transformation and operations, stochastic processes, and basic materials such as Matlab functions.

附录中还给出了应用举例、Z变换表、矩阵变换和运算、随机过程及Matlab函数等基本材料。

In chapter six, the vender markov process and renewal process are used to analyze deteriorating items inventory control .The steady balanceable target function is established and the optimal inventory control strategy is given.

第六章引入向量马氏过程和更新过程对随机易腐物品的最优存储进行了基本分析和探讨，给出了模型从稳态下的目标函数，并提出了最优的库存控制策略。

A matching graph of class-buck and class-stack is obtained by a simplifying rule to guarantee the correctness of curriculum schedule. Employing the matching graph as the initial solution, Tabu search is introduced, the index of which is the weighted summation of the principle of categoricalness, rationality, and humanization.

在此基础上，引入禁忌搜索算法，以排课的完备性原则、合理性原则和人性化原则的加权和为目标函数，以随机二维权值矩阵生成的匹配偶图为初始解，对二维权值矩阵进行扰动构成搜索邻域，以生成的匹配偶图为禁忌对象，采用全局藐视准则，获得最优的排课方案。

A few written FISH functions are used to set the random imperfections and to calculate the overall deformational characteristics.

采用编写的FISH函数于试样内部规定随机缺陷并计算其全部变形特征。

FISH functions were used to generate initial imperfections, calculate overall deformational characteristics and to remember the number of failed elements per 10 timesteps.

利用若干FISH函数预置初始随机缺陷，计算全部变形特征，并统计每10个时间步内的破坏单元数。

The results showed:①the communities that stipa baicalensis is edificator had the highest species diversity, and the idea that stipa baicalensis communities were the local zone vegetation was supported;②the majority of studied communities were unsaturated in the species diversity, and the species diversity had a tendency to increate with the improvement of soil environment;③the relation of species diversity to community productivity was a one-humped function, that is, the species diversity of mediation productivity was highest;④the species diversity under intermediate disturbance was highest, and the intermediate disturbance hypothesis was supported;⑤the content of potassium in soil had probably an important function, or was an important following factor in the types of grassland community;⑥a new hypothesis on the forming mechanism of species diversity of community, Small Scale Competition and Random-Patch Dynamic Hypothesis, was put forward boldly.

通过上述研究分析得出如下结果：①以贝加尔针茅为建群种的群落物种多样性最高，从物种多样性角度证明该群落类型最适应本区气候和环境条件，应是本区的地带性群落；②绝大多数群落的物种多样性处于未饱和状态，随土壤环境的改善呈明显的增加趋势；③物种多样性与群落生产力呈单峰函数关系，即在中等生产力水平时物种多样性最高；④放牧中等干扰水平物种多样性最高，支持Connell的中度干扰学说；⑤偶然发现土壤钾含量可能在草地植被类型分化中起到重要作用，至少是一个重要的伴随因子；⑥大胆提出了群落物种多样性构成机制的新学说即小尺度竞争随机斑块动态学说。

According to the functional models and stochastic models of GPS/DR, the paper presents three adaptive fusion methods based on currently statistic models, testifies the validity of fusional methods by practically surveying data and resolves adaptive problem owing to the lack of observational information.

根据GPS/DR的函数模型和随机模型，结合当前统计模型，提出了三种白适应融合方法。通过实测数据验证了本文提出的融合方法的正确性。

Because the genetic algorithm is a global stochastic searching method, and even if the defined fitness function is indifferential or uncontinuous, it is also possible to obtain the global optimal solution with a considerable probability. Thus there will be widely practical application in the engineering field.

由于遗传算法是一种全局随机搜索方法，即使定义的适应性函数不可导或不连续，它也可能以很大的概率求得全局最优解，因而在工程领域中将有十分广泛的实际应用前景。

Some methods, in which synthesized theoretical seismogram of high frequency is taken as record signal and 20%random noise is superimposed on the seismogram, are used to analyze the theoretical seismogram. The digital experiment shows that in the correlating frequency range, Green's function method can measure precisely interstation phase velocity, but the results obtained by correlation and narrow band-pass filtering correlation methods are more dispersed.

以合成的高频理论地震图作为记录信号，并在理论地震图上叠加了20％的随机噪声，利用这些方法分析理论信号，数字实验表明：在相干频率范围内，格林函数方法能够精确测量台间相速度，而互相关法和窄带通滤波互相关法所得结果较为离散。

The correlation function, correlation distance and irrelated distance are studied and the representative v.

以天津港大量现场勘察资料为基础，综合理论和实测数据建立起天津港地基土性剖面的随机场模型，统计出本地区典型土层的相关函数、相关距离及完全不相关距离值。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。