查询词典 parameter

We make the following assumption for When 2 is positive definite matrix, different estimators about matrix of regression coefficients and inefficiency of Least squares estimate have been discussed in many documents. Considered 2 is nonnegative definite matrix, this thesis derives Best linear unbiased Estimate of parameter matrix B and estimable parameter function KBL under the meaning of matrix nonnegative definite and the property of maximum probability of BLUE is investigated.

当∑＞0时，众多文献讨论了回归系数阵的各种估计及LSE的有效性，本文考虑了当∑≥0的情形，给出了回归系数阵B及其可估参数函数KBL的在矩阵非负定意义下的最优估计，研究了它的一个最大概率性质，并且讨论了最小二乘估计成为最佳线性无偏估计的充分必要条件，在此基础上给出了均值矩阵的最小二乘估计与BLUE的偏差估计，定义了LSE相对于BLUE的一个相对效率，并给出了它的界。

The influences of Darcy number and inertia parameter on the velocity profile of the structural flow are analyzed,and it is shown that the velocity profile becomes evener with Darcy number decreasing and the inertia parameter increasing.

随着所施加的外力逐渐增大，管壁附近的各流层依次开始流动，而管路中心的流体仍然以相同的速度，像圆柱体一样向前运动，这部分流体称为流核，流核内部的流层间没有相对运动，具有流核的流体流动称为结构流

If this parameter is null, you must provide the name of the executable file in the lpCommandLine parameter.

如果这个参数为空，你必须在lpCommandLine参数中提供这个可执行文件的名字。

While single-parameter exponential distribution is studied, the author gives LSE of the parameter.

在第五章中，作者提出了可靠性参数的加权综合估计法。

In the case of NA samples, the parameter for scale exponential family is discussed using empi- rical Bayes methods. Moreover, we investigate the statistical analysis of life data in reliability tests. Firstly, based on the LINEX loss function, we obtain the empirical Bayesian estimator for parameter of the one-side truncated-type distribution families and the scale exponential family under NA samples, also discuss the estimators?

在非对称的LINEX损失函数下，我们首先给出了一类单边截断型分布族、刻度指数族参数的经验Bayes估计NA样本情形），并讨论了该估计的收敛性质，在某些条件下，证明了本文给出的经验Bayes估计是渐近最优的，且给出了收敛速度。

And established the mechanics model,optimization parameter model,optimization mathematics model for the elastic element of the extensometer,programs analysis file and optimization control file by using the ANSYS parameter design language.

解析设计方法：依据弹性元件的受力特点建立其力学模型，运用已成熟的力学理论，如薄板弯曲理论、梁弯曲理论、柱拉压理论、剪切理论等获得弹性体的应力应变的解析值，从而获得目标函数和状态变量的解析值。

College of Guandong Business, Guanzhou 510320, China）Abstract: Since large-scale vertical quench furnace is voluminous, whose working condition is a typically complex process with distributed parameter, nonlinear, multi-inputs/multi-outputs, close coupled variables, etc, dynamically decoupling control algorithm of temperature distributed parameter system in the furnace was presented, by which the whole system was decoupled to several subsystems and the implementation of controller was simplified. With finite difference approximation, the space and time step size was solved to ensure the convergency of finite difference approximation. After decoupling, the subsystems were controlled with self-learning PID control algorithm. The results show that the temperature control precision and homogeneity are improved; the overshoot and process in temperature rising period are reduced simultaneity.

摘 要：针对大型立式淬火炉体积庞大，工况复杂，炉内温度分布呈本征非均匀性，具有多输入/多输出、非线性、强耦合等特性，难以实现炉内温度高精度高均匀性控制目标等问题，提出一种温度分布参数系统动态解耦控制算法，其原理是：采用有限维逼近方法将对象解耦为多个独立的子系统，简化控制器的实现过程；通过分析有限维逼近方法的收敛性，获得保证收敛性的空间和时间步长应满足的条件；解耦后的子系统采用自学习PID控制算法，实现炉内温度高精度和高均匀性控制以及升温过程的快速性和小超调。

Fine User Interface.And the system was circulated with a man-machine conversation.The purpose to do all of this is just to let computer protract Switched Reluctance Motor with an idea that people alter the parameter of Switched Reluctance Motor.Because Switched Reluctance Motors have a character: although the parameter and size changed ,the structure is fixedness .

该课题主要针对开关磁阻电机的计算机辅助设计，以流行的VisualBasic作为开关磁阻电机软件的开发平台，结合AutuCAD2000关于VisualBasic的二次开发，开发出一个具有良好用户界面的交互性的开关磁阻电机CAD软件系统。

This design wants to design a complete set of three axes five speed gearboxeses , it mainly include three parts : The first part , to make sure the basic parameter of the gearbox assurance ; The second part, The contact strength verify-check and the flection strength verify-check of each wheel gear of the gearbox, mainly verify whether each wheel gear satisfy various strength conditions with according to the giving parameter ; The third part , to progress verify-check intension of the axes Four-part cent, to calculate the life of the bearings.

本次设计是要设计一部较为完整的五档变速器，其中主要包括三部分：第一部分，变速器基本参数的确定；第二部分，变速器的各档齿轮的接触强度校核和弯曲强度校核，主要是根据所给的参数来验证各档齿轮是否满足各项强度条件；第三部分，进行轴的强度校核；第四部分，轴承的寿命计算。

It is found that the offset of weight function should change with the Peclet number, and that both the parameter q of radial basis functions and the size of the support domain have a greater influence on the calculation results than the RBF parameter a and the quantity of Gauss integral points.

结果表明：权函数的偏置量需要随着对流强弱而变化，径向基函数参数q、支持域尺寸对计算结果的影响比较大，RBF参数a、Gauss积分子域数对计算结果的影响相对较小。

Molecular Distillation is a kind of high vacuum distillation method, which is suitable for the separation of high boiling, heat sensitivity and viscidity products.

分子蒸馏技术是一种在高真空条件下进行的连续蒸馏过程，适合于分离高沸点、热敏性及具有生物活性的混合物。

They are to the Noughties what yuppies were to the Eighties .

那在六十年代是时髦的，但在八十年代肯定是过时了