查询词典 convergence

Secondly, pollution emission nudging technique is introduced and used to correct urban average SO_2 and NO_X emission, error factor and convergence condition of emission nudging technique is studied and hourly SO_2 and CO emission of Peking is also experimented.

提出污染源"Nudging"修正模型，进行城市SO_2、NO_x排放强度的"Nudging"修正试验，讨论了"Nudging"试验的收敛条件和误差因子，并进行了北京SO_2和CO逐小时排放的"Nudging"修正试验。

By the method, we can obtain the convergence factor of each subband according to every subband statistical character driven by a standard Gaussian white noise. The hard threshold of every directional subband of each scale is determined by modifying the 3σ(or 4σ) rule in terms of corresponding effect factor.

该方法根据标准高斯白噪声作用在每个子带上的统计特性，得到每个子带的收敛因子；使用该收敛因子对标准的3σ(或4σ)准则进行修正来确定不同尺度不同方向子带的硬阈值；并在轮廓波域进行子带硬阈值处理之后，使用自适应维纳滤波进行后处理。

Based on considering the energy of nodes, the paper gives three attribute chatacteristics: flow factor、bridging factor 、convergence factor,and two ways to find articulation nodes:using energy model to find and finding key nodes in the connected gragh. At the same time,we use network simulator NS2 to simulate and verify our analysis results.

本文从考虑节点能量的角度出发，给出了关键节点的三个属性特征：流量因子、桥接因子、汇聚因子和两种判断关键节点的方式：利用能量模型判断和在连通图中判定关节点，同时用网络模拟器NS2加以模拟验证。

From our experimental results, we find the expanding input features with back propagation learning rule can get fast convergence in training and decrease the mean absolute error between the desired output and the actual output.

实验显示，采用此种扩展型特徵值的倒传递学习法网路可以加速网路的学习效率以及降低实际输出值与期望输出值之间的绝对值误差。

After analyzing the limitation of slow convergence in adaptive Least Mean Square algorithm, it is brought forward the method of transforming signal into frequency domain, taking advantage of the orthogonality of discrete Fourier transform, the adaptive LMS filter is performed for each frequency element in transform domain.

四川大学博士学位论文在频域自适应滤波的基础上，提出了一种权值反馈方法抑制图像传输中的多个大功率平稳强窄带干扰信号，不仅能加快算法的收敛性能，并具有良好的滤波效果。

The computer simulation showed the blind Sign-EMS MLSE algorithm is superior to conditional blind EMS MLSE algorithm in convergence speed and mean square error in typical telephone channel, symmetric channel and common channel.

通过计算机仿真试验，在典型电话信道，对称信道以及普通信道中，对该算法与传统的LMS盲最大似然估计算法性能作了比较，并证明了该算法在收敛速度、均方误差等方面均优于传统算法。

First, the partial derivative is defined, based on the convergence in probability measure in the probability measure space.

本文首先在概率测度空间上，利用依概率测度收敛，定义了多随机变量函数的偏导数，并且偏导数的计算式可以通过替换实值函数的对应的偏导数中所有的实变量替换为随机变量得到。

Properties of measurable functions; approximation by simple functions and by continuous functions; convergence in measure; Egoroff's theorem; Lusin's theorem; Jensen's inequality.

可测函数。可测函数的性质；简单和连续函数逼近；测度收敛；叶果洛夫定理；鲁津定理；詹森不等式

Contaminated data ; regression model ; coefficient of contamination ; density function ; convergence in L_2 norm

污染数据；回归模型；污染系数；密度估计； L_2收敛性

With an energy method,the optimal order convergence rate in discrete H1 norm is proved and the stability in H1 norm is proved without any restrictive conditions about steps Δt and h.

利用变分形式及能量方法，得到离散H1范数的最优阶先验误差估计及稳定性。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。