variables
- variables的基本解释
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n.
可变因素, 变数( variable的名词复数 )
- 相似词
- 拼写相近单词
- variable
- variableness
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Events,Operation and Relation of Sets, Classical Probability, Geometrical Probability , Statistical Stability of a Frequency, Axioms of Probability, Conditional Probability, Total Probability Theorem, Bayes' Rule,Independent Events,Independent Repeated Trials, One Dimensional Random Variables, Discrete Random Variables, Distribution Function of a Random Variables , Continuous Random Variables, Normal Distribution, Distribution of a Function of a Random Variable, Multidimensional Random Variables, Joint Distribution Function, Marginal Distribution Function,Discrete Two—Dimensional Random Variables,Continuous Two—Dimensional Random Variables, Independent Random Variables, Distribution of Functions of Random Variables,Expectation,Variance, Covariance, Coefficient of Correlation, Bivariate Normal Distribution, Law of Large Numbers, The Central Limit Theorems, Sample and Population ,Chi—Squared, T and F Distributions , Sampling Distributions , Point Estimation , Interval Estimation , Testing Hypotheses , A Test of Significance for Parameters in a Single Sample From a Normally Distributed Population , A Test of Significance for Parameters in Two Sample From Normally Distributed Populations .
本课程的主要内容:概率的概念与运算、随机变量及其分布、随机变量的数字特征与极限定理、数理统计的基本概念、估计和检验的基本方法,随机事件与概率随机事件、事件的关系与运算、几何概率、统计概率等,条件概率、全概率公式、贝叶斯公式、事件的独立性、二项概率公式,随机变量的概念、离散型随机变量、随机变量的分布函数、连续型随机变量、随机变量函数的分布,多维随机变量及其分布函数、边缘分布函数、随机变量的独立性、二维随机变量函数的分布,数学期望、方差、协方差和相关系数、大数定律、中心极限定理,总体与样本, X 2-分布、 t-分布和 F-分布,统计量及抽样分布,假设检验的基本概念、单个正态总体参数的显著性检验、两个正态总体参数的显著性检验。
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In presented method, the correlated variables are transformed into uncorrelated variables equivalently, and the performance functions in the correlated variables space are transformed into those in the equivalent uncorrelated variables space, in which the reliability sensitivity of the system failure probability with respect to the distribution parameters of the uncorrelated variables can be solved by the moment method for the uncorrelated variables. Finally the equivalent relationship between the correlated variables and the uncorrelated variables, the chain rule for derivative are employed to obtain the reliability sensitivity of the system failure probability with respect to the means of the correlated variables.
在所提的方法中,首先将相关变量空间等效转化为不相关变量空间,并将系统多个失效模式的功能函数转化为不相关变量空间的功能函数,进而利用矩方法得到多模式系统失效概率对不相关变量空间基本分布参数的灵敏度,最后利用相关变量空间与不相关变量空间的等价关系及复合函数求导法则,求得多模式系统失效概率对相关变量空间中变量均值的灵敏度。
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The results show:(1) the total explanatory of four main variables in HBM is 22% which achieves significant level;(2) the effect of HBM in health behavior has significant differences while different sources, research designs, types of behavior, ways of performance, and types of independent variables;(3) sources, research designs, types of behavior, types of dependent variables, and types of independent variables need to rely on the interactions with other variables to moderate effect sizes;(4) no matter what sources, research designs, types of behavior, ways of performance, and types of independent variables are, perceived barriers of taking action are the strongest variable.
结果显示:(1)健康信念模式四变项对健康行为之总解释力为22%,达到显著水准;(2)在不同的出处、研究设计、行为类型、行为表现类型及自变项种类时,健康信念模式对健康行为之总解释或预测效果有显著差异;(3)出处、研究设计、行为类型、行为表现类型及自变项种类等变项须透过与其他变项之交互作用来共同调节效果量的大小;(4)不论研究设计、行为类型、行为表现类型及自变项种类为何,自觉行动障碍都是健康行为最强之解释或预测因子。
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variables:变量
现代西方经济学一般倾向于应用数学公式,其基本做法是:将所有研究对象都称为"变量"(Variables),然后先做出一定的假设(Hypothesis),通常假定除所要研究的少数几个主要变量外,其它所有变量和外部条件都不变(Other things constant,
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variables:變數
多维数据库虽然是一个生疏的用语,但它是维数(Viewpoint)维数中的项目(Viewpoint Member)变数(Variables)和时间(Periods). 企业事务的多维模型分析的时候,大体上事业部,生产地区,产品,市场区分,销售渠道等作为维数设置,
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variables:变
生活中所接触的变 (variables)常常具有随机现象,比如甲乙 人猜拳n 次,甲赢乙的生活中所接触的变 (variables)常常具有随机现象,比如甲乙 人猜拳n 次,甲赢乙的
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variables:变项
适用于翻译研究的几种主要的理论模式(第三章);作为研究对象的"变项"(variables)及变项之间的几种关系(第六章).
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system variables:系统变量
五、定制元变量:右击页面,选择页面属性(page properties),选择自定义(custom)标签,点击系统变量(system variables)边的添加(Add),在对话框中的Name中输入你想定义的元变量名称,在Value中输入变量的值就可以了.
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