查询词典 population statistics

Population size dynamics and population statistics features of plateau pikas are researched in this paper, v/hich supplies population ecology research of plateau pikas with important parameters.

本论文研究了高原鼠兔种群数量动态和种群统计特征，为高原鼠兔种群生态学研究提供了重要参数。

We give several sufficient conditions of NA and NSD properties of random variables, compare the closeness of distribution functions of order statistics between NA and independent rv's, investigate properties of NSD defined by supermodular functions, study the dependence structure of stationary Markov process and order statistics and their spacings from two samples, establish stochastic comparisons of order statistics of heterogeneous rv's in the hazard rate and the reversed hazard rate orders, and give the first analytic proof of the closure property of the up shifted likelihood ratio order under convolution.

给出判定一组随机变量NA性质的几个充分条件，并给出NA和独立随机变量的次序统计量之间"贴近性"的比较，系统地研究基于特殊函数类所定义的NSD负相依概念，给出一些判别NSD性质的结构定理和一些有用概率不等式。系统研究平稳马氏过程的相依结构。研究两样本次序统计量及其问题隔的相依结构。在失效率、反向失效率序和似然序意义下给出非齐次随机变量次序统计量的比较。给出上漂移似然序卷积封闭性的第一个解析证明。

In greater than two space dimensions, there is one new consistent statistics in which all representations of the symmetric group can occur. This is infinite statistics, which is also called quantum Boltzmann statistics.

而在大于二维的空间中，还存在一种自洽的统计，其中对称群的所有表示都可以出现，这就是无穷大统计，也就是我们通常所说的量子玻尔兹曼统计。

However, I am not just interested in the Formulas Theorems and indigestible theory of statistics , but also interested in deepening and Widening Application of Statistics and discovering the new Application of Statistics .

但尽管如此，我的兴趣不在于那一系列的公式和定理，以及艰深的统计学理论，而在于加深和拓展统计学的应用以及探索统计学的新应用。

Linear order statistic and linear rank statistic are two kinds of important statistics in the mathematical statistics. They are used widely and a lot of the other statistics belonging to them.

线性次序统计量和线性秩统计量是数理统计中两类很重要的统计量，在应用上经常使用，很多形式的统计量都是属于这两类统计量。

In order to fully understand the research directions of Information Science master education in our country, the paper uses the classification statistics method to analyze enrollment regulations of 64 Information Science masters units, including physiographic region statistics and research direction statistics.

为掌握我国情报学硕士教育的发展方向，运用分类统计方法，对2009年我国64所情报学硕士单位的招生简章进行统计分析，包括地理区域和研究方向。

But because of the complexity of the robust statistics itself, there are seldom scholars currently in this area in our country, but as what the robust statistics aims at is the widespread and actual problem in statistics, this method is very important theoretically and realistically whatever to science studies or to the related economic policymaking, so the writer think that its development foreground is considerable.

但是由于稳健统计学本身的相对复杂性，目前我国学者对稳健统计学的研究还很少，而稳健统计学所针对的是统计学中一个普遍而实际的问题，这套方法无论是对科学研究还是对相关部门经济政策的制定都有着重要的理论意义和现实意义，因此笔者认为它的发展前景是可观的。

This paper introduced the appliance of probability and statistics in reality,including classical model,formula of total probability, normal distribute,mathematics expectation and the central limit theorem.While it also discusses the widely uses of probability and statistics and the close relationship with the real life.Therefore,it lays the theoretical foundation for the practical uses with probability and statistics,and the basis of mathematics model.

本文介绍了概率统计的某些知识在实际问题中的应用，主要围绕古典概型，全概率公式，正态分布，数学期望，极限定理等有关知识，探讨概率统计知识在实际生活中的广泛应用，进一步揭示概率统计与实际生活的密切联系，为应用概率知识解决实际问题，数学模型的建立，学科知识的迁移奠定一定的理论基础。

And usually this method will suffice to typify all the rest, and not only can we easily solve the problems of calculating statistics of mathematical statistics in this way, but also a large number of sophisticated data can be avoided in the mathematical statistics teaching.

在方差分析中，无论是单因素还是双因素分析，基本思想方法和基本概念都是很清楚的，学生在经过参数的区间估计、点估计和假设检验的学习之后，对这些概念的掌握应该是顺理成章的事。

Choosing different class exponent to get an evaluation model from above research. Then using analogism, flexible quotiety methods to analyze the statistics comparison and get the standard statistics , put these statistics in to the model mentioned above, a formal evaluation system will be established.

然后根据天津市公路现代化研究的理论体系框架，运用系统论的观点和层次分析法等科学方法搭建天津市公路现代化评价指标体系的结构，选取体系中的各级指标，并确定各指标的权重，从而得到天津公路现代化评价指标体系的基本模型。

But GST= 0.156, Nm=1. 588. As a result, the foundation of Youyongchi Avicennia marina population was the result of the migration of hypocotyles and human factors.

这项工作可以为海岸防护林中新引进种类的判定以及为研究种群建立者效应方法的确定提供科学依据。

The two-dimensional CDRC-ADI-FDTD update equations for collision unmagnetized plasma are induced. The unconditional stability of the CDRC-ADI-FDTD formulation for collision unmagnetized plasma is obtained by the examples.

推导了碰撞非磁化等离子体中的二维CDRC-ADI-FDTD迭代公式，并用算例验证了碰撞非磁化等离子体CDRC-ADI-FDTD算法也是无条件稳定的。