查询词典 polynomial

In the article , we adopt the Unrestricted Polynomial Distribution Lag model in

本文采用经济计量学中无约束多项式分布滞后模型，研究了利用

of polynomial distribution lag model was employed.

研究方法：多项式分布滞后模型和实证分析法。

In the proposed method,properly spaced background sample pixels are automatically picked up from the image,and then they are used in polynomial fitting for obtaining distribution characteristic of background light.

这种方法假设同类物体具有类似的特征，在灰度图像中是亮度，在彩色图像中则为物体的颜色。

This dissertation studies several kinds of instantaneous frequency estimation methods, pay much attention to the performance of instantaneous frequency estimation algorithm based on the peak of time-frequency distribution. It gives the theory and algorithm of polynomial Wigner-Ville distribution, analyzes its performance to the noise of the moving target in the air.

对常用的几种瞬时频率估计算法进行了研究，重点研究了基于时频分布峰值的瞬时频率估计算法的性能，给出了多项式Wigner-Ville分布的原理与算法，分析了在直升机定位这种特定情况下的有效性。

In order to improve the frequency resolution, realize high precision frequency estimation, this thesis proposes the high resolution polynomial Wigner-Ville distribution using Chirp-Z transform, the validity of this algorithm is verified using synthesized data.

为了提高基于FFT的谱分析算法的分辨率，实现高精度的频率估计，提出了利用Chirp-Z变换的频率高分辨多项式Wigner-ville分布，并用合成的仿真数据，验证了上述算法的有效性和正确性。

We also use linear and polynomial fit to analyze their distribution trends and differences among chromosomes and among different kinds of sequences.

果蝇染色体参数X值是由D1和D2值共同决定的，但果蝇染色体的编码序列参数X分内含子序列相比，分布没有趋同性。

It proposes an approach which is suited to the frequency estimation of the moving target in the air. It is based on the extraction of the peak of polynomial Wigner-Ville distribution, data driven window width adaptive adjustment, can meet the demand of location precision.

提出了适合于空中运动目标的瞬时频率估计的工程实现算法，即利用多项式Wigner-Ville分布的峰值提取瞬时频率，并通过数据驱动的自适应算法调整窗宽，以达到定距精度对频率估计提出的精度要求。

Then, forecasting return is accomplished. Because of being free of probability distribution suppositions for the sale quantity and the return quantity, such as the binomial distribution and the polynomial distribution, the model is more flexible compared to previous forecasting models.

该预测方法的突出特点是，无需像以往预测模型那样假定回收量和前期销售量符合特定的概率分布(例如多项式概率分布或二项式分布)，因此模型具有较强的通用性。

Then it compares these operators' performance through its convergence quality,and it demonstrates that this over-flow dealing method is effective through a group of experiments,the mutation operators used in single-objective optimization have the respectable distribution to polynomial mutation and achieve better convergence quality.

通过一组实验表明这种越界处理方法是非常有效的，单目标优化中的这些变异算子具有与多项式变异算子相当的分布性，同时取得了更好的收敛性能。

It gives performance comparison of instantaneous frequency estimation algorithms based on the peak of Wigner-Ville distribution and fourth-order polynomial Wiger-Ville distribution, analyzes the influence of window width to the estimation performance of instantaneous frequency estimation algorithms based on time-frequency distribution.

在不同飞行状态下，给出了基于Wigner-Ville分布、四阶多项式Wigner-Ville分布峰值的瞬时频率估计算法的性能对比，并分析了窗长对瞬时频率估计性能的影响。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。