参数假设

For one-dimensional mesoscopic metal rings system in external magnetic field, supposing the system has a symmetry under translation in charge space, the quantum current relation in mesoscopic metal rings is given by solving the eigenvalue equation of the current, the property of quantum current have been investigated and analysed.

针对处于外磁场中的一维介观环系统，假设在电荷空间中具有变换的对称性，通过求解电流算符的本征值方程，给出系统中的量子电流关系，分析和研究一维介观金属环中量子电流的性质。结果表明，量子电流不仅与外磁场、介观金属环参数有关，而且还明显地依赖于电荷的量子化性质

In this paper, the main issue is about parameters involved with the stock's volatility, which are the σ in the Winner process and the λ and δ in the Poisson process, under the special cases of jump diffusion models with two assumptions that are independence between option prices' errors and stock and normal error between pricing formula and true price.

本论文在跳跃扩散模型中，以跳跃比例大小为非随机的常数或对数常态分配此种特例，和选择权价格的误差与股价过程为独立并且与理论公式存有常态误差值的两个假设下，去对模型中Winner过程里的σ以及Poisson过程里的λ和δ，这几个影响股价变异数的重要参数作讨论。

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。

Critical voltage for a simply supported rectangular thin plate under uniform electric field is presented by using Navier solutions.

基于经典板理论，假设材料的电弹参数为板厚方向坐标的幂函数，采用含压电耦合项的修正层合理论，推导了压电功能梯度薄板在电载荷作用下的屈曲方程，并利用Navier解，得到四边简支矩形薄板在均匀电场下的屈曲临界电压。

Major topics covered are: basic concepts of probability, sample space and events, axioms of probability, random variables, discrete and continuous distributions, joint and marginal distributions, numerical characteristic for random variables, the weak law of large numbers, central limit theorem, basic concepts of statistics, parameter estimate, hypothesis testing and regression analysis.

本课程的基本内容有：随机事件及其概率、随机变量及其分布、多维随机变量及其分布、随机变量的数字特征、大数定律与极限定理、数理统计的基础知识、参数估计、假设检验、回归分析。

A "what-if" analysis method based on changing all kinds of bounds and parameters is developed to offer more decision information.

通过改变各临界值和求解过程中产生的参数，模型支持各种假设分析。

Bull; change parameters to facilitate what-if analysis in said spreadsheets

bull；在上述电子表格中变化参数便于进行假设分析

For example, we wanted users to be able to be able to change sorts and filters to better understand data they were looking at without leaving the context of the browser. We wanted users to be able to adjust PivotTables to see exactly they data they wanted to see in order to make better business decisions, again without leaving the context of the browser. We wanted users to be able to set parameters to perform what-if analysis, again from within their browser.

例如，我们希望用户不必离开浏览器页面就能变换排序和筛选来更好地理解他们正在查看的数据；能调整数据透视表以确切地看到他们想要的数据以便于做更好的商业决策；在浏览器页面就能设置参数来执行假设分析。

Any of several nonparametric measures of correlation (used when the assumptions of standard correlational analysis are not met).

任何一个非参数相关量（用于不满足标准相关分析的假设）。

To address the joint flexibility and get some insights to flexile joint robot control, we studied the filtered velocity algorithm scheme for ASM manipulator using its flexible model with assumption that all mass and links are known.

为深入研究柔性关节机器人的控制方法，本文为ASM并联机器人建立了柔性关节模型，并假设模型参数已知，然后为其设计了速度滤波方案进行轨迹跟踪控制。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。