查询词典 null ellipse

And then some ellipses that AUGR estimator is better than the OLS estimator and AUGL estimator is better than the OLS estimator are given, respectively.Second, the definition of the almost unbiased unified biased estimator is proposed. This definition includes the familiar almost unbiased estimators in literatures, and it is the unified expression of the familiar almost unbiased estimators. Followed the biased and variance are compared of AUUB estimator and the unified biased estimator, respectively. AUUB estimator has smaller bias than UB estimator and the variance of AUUB estimator is between the variance of UB estimator and 4 times of the variance of UB estimator. Finally the properties of AUUB estimator are discussed. The conclusion is gained that there are parameters made AUUB estimator is better than OLS estimator in terms of their mean square error. The sufficient and necessary condition that AUUB estimator is admissible is given. The ellipse is given that AUUB estimator is

然后给出了几乎无偏统一有偏估计的定义，该定义包括了文献中常见的几乎无偏估计，实现了常见几乎无偏估计的统一表达式；接下来我们比较了几乎无偏统一有偏估计与统一有偏估计的偏度与方差，得出了几乎无偏统一有偏估计比统一有偏估计有较小的偏度，几乎无偏统一有偏估计的方差介于统一有偏估计的方差与统一有偏估计的方差的四倍之间的结论；最后我们对统一有偏估计的主要性质作了讨论，证明了存在参数K，S使得几乎无偏统一有偏估计在均方误差意义下优于最小二乘估计的结论，给出了几乎无偏统一有偏估计为可容许估计的充要条件，还给出了在均方误差阵意义下几乎无偏统一有偏估计优于最小二乘估计的椭球。

It is proved that there is no contradiction between biaxial stress ellipse theory and practical loading condition.

摘要采用反证法探讨了前人在基础理论的推理过程中存在的问题，证明双向应力椭圆理论与实际载荷条件并不矛盾。

Employing the bidimensional regression along with standard deviational ellipse, the authors compared the local and global distortions between two kinds of cognitive maps.

在此基础上，通过二维回归与误差椭圆的方法分别对两种外部化方法获得的结果进行全局与局部的比较，研究发现手绘草图的方法的结果更加符合实际地图；然而两个方法在变形的趋势上却大致相同。

Every ellipse can be described by 5 parameters which are encoded as primitive code through binary coding.

无论是自然场景还是人工场景均有大量圆形目标存在，有关这方面的研究和报道较多。

Blackfin's low power consumption translates to an estimated 30+ hour battery life, and Ellipse Aura also automatically powers down when you unplug the cable from the instrument.

Blackfin的低功耗可以保证30多个小时的电池时间，在你从乐器上拔出线缆时Ellipse Aura还会自动断电。

That means we need something that can be a filled Rectangle or filled Ellipse, or just a blank cell, or maybe a filled cell.

这意味着我们需要的东西，可以是一个填充矩形或填充椭圆，或只是一个空白单元格，也可能是填充单元格。

An ellipse was drawn up - he will have a style of border lines and to use the color of the filling.

一个椭圆被绘制出来——他将有一个线条style的边框并且用所给的颜色填充。

By numerical simulation, it is found that the stable borehole shape is an ellipse with a tip.

数值模拟计算发现稳定的井眼形状是一带尖点的椭圆形。

We also proposed a strategy to update the size and orientation of the bounding ellipse of the moving object.

我们也针对移动物体在画面中的大小以及方向性提出一套调整方式。

Or we want to rotate an ellipse by 37 degrees?

或者，我们要旋转37度的椭圆？

Although translator has turned from being a crystal ball by which the original culture can unrestrainedly penetrate to another crystal ball by which the target culture can freely traverse, the translator's personal embodiment, in the process of cognitive act, are still absent in translation studies. Translators are still subjects without body or simply disembodied subjects.

译者虽然由原语文化可以自由穿透的玻璃球变成了译语文化可以自由穿越的玻璃球，但译者认知过程中的个体体验在翻译研究中依然缺席，译者依然仅仅是一个没有躯体体验的主体。

Chillingly, he claimed our technology is 'not nearly as sophisticated' as theirs and "had they been hostile", he warned 'we would be been gone by now'.

令人毛骨悚然的，他声称我们的技术是'并不那么复杂，像他们一样，和"如果他们敌意"，他警告说，'我们将现在已经过去了。