变量

According to the variable parameters, which are continuum or discrete, an algorithms are over viewed, such as homogenization method, variable density algorithm, variable thick algorithm, moving asymptotes algorithm, simulated annealing algorithm, genetic algorithm, relative difference quotient algorithm and Tabu search technique.

按照设计变量，叙述了连续变量和离散变量拓扑优化设计的一些常用算法，其中包括均匀化方法、变密度法、变厚度法、移动渐进算法、模拟退火法、遗传算法、相对差商法和Tabu搜索法，并对各种方法的优缺点进行了比较；对二维和三维复合材料的拓扑学优化设计研究现状和方法进行了阐述；提出了拓扑优化设计复合材料的未来研究方向。

Based on cloud seeding data on April 5,2002 in Henan province,cloud seeding effects were evaluated by six methods,i.e.double contrast method of regional rainfall tendency control,regression analysis method of regional tendency correlation,multiple regression analysis method of regional tendency covariant,floating control historical regression method,cluster-analysis-based floating control historical regression method using rainfall as a covariant and CA-FCM using rainfall and atmospheric perceivable water as covariants.

根据2002年4月5日河南省人工催化增雨作业数据，分别采用作业区域趋势对比双比分析评估方案、区域趋势相关回归评估方案、区域趋势协变量多元回归评估方案、FCM评估方案、以降水量为协变量的CA-FCM评估方案和以降水量与整层大气可降水量为协变量的CA-FCM评估方案进行效果评估。

Special attributes: func doc or doc is the function's documentation string, or None if unavailable; func name or name is the function's name; module is the name of the module the function was dened in, or None if unavailable; func defaults is a tuple containing default argument values for those arguments that have defaults, or None if no arguments have a default value; func code is the code object representing the compiled function body; func globals is the dictionary that holds the function's global variables — it denes the global namespace of the module in which the function was dened; func dict or dict contains the namespace supporting arbitrary function attributes; func closure is None or a tuple of cells that contain bindings for the function's free variables.

func defaults是一个包括有参数中设有默认值的元组；func name 或 name 是函数名。func code是一个编译后的代码对象；func globals是一个引用，指向保存了函数的全局变量的字典—-如果你在函数所在模块中定义了全局变量的话。func dict或 dict 包括了支持任意函数属性的名字空间；func closure 要么是None，要么是包括有函数自由变量捆绑的单元的元组。

To the question of predication in the stock market,I study some informations about data minging predication model of stock price based on neural network.I put forward to do attribute relativity analysis for inputing index variables and outputing object variables with the theory of attribute relativity analysis in the course of designing a neural networ predication model.

本文针对股市预测分析问题，对基于神经网络股市预测的数据挖掘模型进行了研究，提出在模型设计中，采用属性相关性分析理论对输入指标变量和目标变量作必要的相关性分析，以此优选输入变量组合，从而提高网络的预测性能。

The rust time of the moderately resistance plants was visually later than other groups. The infection period of uredia on the moderately resistance plant was shorter than others.

第一典型变量比第二典型变量更有效，第一典型变量大体可以将三类具有不同抗锈性的品种区分开。

Univariate and multivariate analyses were performed to determine any associations between variables and outcomes.

对单变量和多变量进行分析，来确定变量和结果的关联。

Since the variable weights are determined to simultaneously optimize the training of calibration set and the prediction of validation set, variable weighting can be seen as an optimized rescaling of the variables in certain sense and therefore is more flexible than traditional variable selection methods.

通过对传统的基于变量选择的校正模型的考察可以发现，进入校正模型的变量实际上被赋予权重1，而被模型舍弃的变量的权重实则为0。

level variables are not given default values and if you attempt to use one before it has been initialised it will cause the Error Variable i may not have been initialized

在类的方法一级的变量是不会被赋初值的，如果你在变量被初始化前使用它，将会得到一个错误：变量 i 可能未被初始化。

Exercise 4-6. Add commands for handling variables. It's easy to provide twenty-six variables with single-letter names.

练习4-6 给计算器程序增加处理变量的命令(提供26个具有单个英文字母变量名的变量很容易)。

One variable for self-consumption value of the results of the most significant impact, followed by the interpersonal variables, and finally the space variables.

其中自我价值变量对于消费结果的影响最为显著，其次是人际关系变量，最后是空间变量。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。