It is found that the more the phonon dispersion, the larger are the self-trapped energy of the polaron, and the variance are the effective mass of polaron.
声子色散的加强使极化子自陷能变大，有效质量也随色散的强弱而改变。
A method is presented for estimating the location and dispersion effects from these experiments. Firstly, we estimate the variance and the mean of each cell with maximum likelihood;
本文对带有右截尾数据的有重复因子试验，提出了另一种分析位置效应和散度效应的方法：首先，在每一个试验点，对重复试验观察值用极大似然法估计出均值和方差；
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