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1)  normal approximation rate
正态逼近速度
1.
The means of the error decomposition of kernel estimates is extended and by it the normal approximation rate and the law of iterated logrithm for the improved kernel estimates of nonparametric regression function are obtained under usual conditions.
把已有的误差分解式推广到改良情形 ,并利用它得到了非参数回归函数改良核估计在样本独立同分布下的正态逼近速度和重对数
2)  normal approximation
正态逼近
1.
Normal approximation based on the score test is proposed to solve the Behrens-Fisher problem,that is to compare the means of two normal populations with the ratio of the population variances unknown.
本文提出用基于得分检验的正态逼近方法来解决Behrens-Fisher问题,即比较方差比未知时两正态总体的均值。
3)  rate of approximation
逼近速度
1.
With the best polynomial approximation as a metric,the rate of approximation of the neural networks with single hidden layer to a continuous function is estimated by using a constructive approach.
所获结果表明:对定义在紧集上的任何连续函数,均可以构造一个单隐层神经网络逼近该函数,并且其逼近速度不超过该函数的最佳多项式逼近的二倍。
4)  approximation rate
逼近速度
1.
The present paper considers the Muntz rational approximation rate in L[0,1]p spaces and gets for 1≤p≤∞.
本文给出了当λn≤Mn-1/2,n=1,2,…,(其中M>0为一正常数)时Muntz系统{xλn}的有理函数在Lp[0,1]空间的逼近速度,主要结论为Rn(f,Λ)Lp≤CMω(f,n-1/2)Lp,1≤p≤∞。
2.
The kernel estimator and the random wighting estimator of probability density function are constructed under random right censored data, the normal approximation rates and random weighting approximation rates of the error distribution of kernel estimator are obtain under suitable conditions, and the result of Sun Liuquan and Zhu Lixing (1999) is improved.
在随机右删失数据下构造了概率密度函数的核估计和随机加权估计,得到了核估计的误差分布的正态逼近速度和随机加权逼近速度,改进了孙六权和朱力行(1999)的主要结果。
5)  Point wise approximation
点态逼近度
6)  positive approximation
正逼近
1.
This result has been applied to the perturbation analysis of the problem of positive approximation for the matrix.
并且将这个结果应用于矩阵正逼近问题的扰动分析。
2.
The uniqueness of positive approximation for linear operators on two-dimensional Hilbert space is discussed in detail.
讨论了二维Hilbert空间上线性算子正逼近的唯一性;对无限维Hilbert空间上存在唯一正逼近的线性算子进行了刻画;给出了一类线性算子不存在唯一正逼近的充分条件。
补充资料:临界流态化速度
分子式:
CAS号:

性质:又称临界流态化速度。在流态化状态下相应的流体速度。所谓流态化状态是指这样一种状态,即在直立的容器内加入颗粒状固体物料,控制流体以一定速度由底部通入,使其压力降等于或略大于单位截面上固体颗粒的重量,固体颗粒即呈悬浮状态运动而不致被流体带走,其上部具有一个水平的界面。

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