查询词典 variance

This paper presents a new algorithm based on the power inversion and the linearly constrained minimum variance.

介绍了一种新的基于功率反演和线性约束最小方差的算法，以高度抑制GPS接收机的干扰信号。

It is an important method to improve restoration quality by choosing regular parameter according to local feature of images. For example, the variance of pixel brightness in iterative process is a useful feature.

根据图像的局部特征来选取自适应变化的正则化参数是提高图像恢复质量的一个重要方法，可以根据像素在迭代过程中的亮度变化量大小来选取正则化参数。

Compared to the existing adaptive approach, the proposed approach needs not the original image or the accurate noise-variance value to compute the local regularization parameter, and work well in the presence of serious noise.

该方法与现有的自适应正则化方法相比，在计算局部正则化参数方法时不需要知道原始图像或精确的噪声方差，在噪声较为严重的条件下复原结果更优。

When the variance was known and the conjugate prior distribution was normal,a Bayes estimation of loss-function and risk function of logarithmic normal distribution was given.

方差已知时，给出共轭先验分布为正态分布下，对数正态分布的损失函数和风险函数的Bayes估计，得到其Bayes估计为保守估计的条件

In order to the conservation and utilization of this wasp, laboratory studies were conducted to assess the population dynamics of them and effectiveness of the long-winged parasitoid wasps, T. elegans for suppressing populations of S. oryzae using methods for single element variance analysis and LSD multiple comparisons.

为了更好地保护和利用该蜂，采用单因子方差分析和LSD多重比较，在实验室内研究了雅脊金小蜂和米象的种群数量动态，以及该蜂长翅型雌蜂对米象种群的控制作用。

In data analysis, some traditional statistical methods, such as one-way analysis of variance, LSD, correlation analysis, were used.

在数据处理上，采用了描述性统计、单因素方差分析、多重比较检验和相关分析等研究方法。

The repeatability limit and ANOVA unitary variance analysis were used to evaluate the determination. The results indicated that the physical state of steel sample had no significant influence on the accuracy of spectral analysis. The uniformity of composition distribution in lumpish sample was the main factor influencing the accuracy of spectral analysis for steel products.

试验提出采用光谱分析方法的重复性限r和ANOVA一元方差分析进行结果的分析判定，结果表明：钢样的物理状态对光谱分析准确度无显著影响；块状试样成分分布的均匀与否，是影响钢材成品的光谱分析准确度的主要原因。

Theoptimeter growthing environment of Anthurium andreanum seedlings wastested by the photosynthetic rate;The important factor of the soilless culture of Anthurium andreanum seedlings was decided by variance analysis of the total areas of leaves, height of seedling, the content of chlorophyll, photosynthetic rate;The best statistical level was defined by Duncans test;The optimum substrate and nutritional solution were determined by analysis of the major components; The requirements of macro- element at the different growth period have determined by the timing of flowering and measuring the content of N, P, K, Ca , Mg of leaves which can offer the theory of the soillessculture of Anthurium andreanum.

测定各处理组合的总叶面积、株高、叶绿素含量、光合速率等形态、生理指标，并对这些指标进行正交试验的方差分析来决定影响安祖花无土栽培的主要因素。通过对主要因素各水平进行新复极差检验得出最好的水平。综合考虑主要因素和水平找出最适合安祖花无土栽培的基质、营养液。观察各处理安祖花初花期的早晚，并通过测定不同时期叶片中的N、P、K、Ca、Mg的含量，确定安祖花不同生长时期对大量元素的需求情况，为今后更好的进行安祖花无土栽培提供理论依据。

The maths model about the variance that the half-wave voltage varies with the magnetic induction outside is set up.

仿真和实验结果表明，对于平均波长为1.30μm，20T的磁场，铌酸锂的半波电压可以减小了2.13﹪。

The algorithm uses posterior information to modify model's noise variance and markov transition matrix, so as to make IMM have adaptive ability.

该算法采用后验信息修正模型的噪声方差和马尔可夫转移矩阵，使IMM具有自适应能力。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。