提出了当零售商采用一次平滑指数法或简单移动平均法获得需求信息的过程中，不存在波动放大现象。
It shows that the demand variability does not increase when the retailer relies on the simply exponentially weighted moving average or the simple moving average to forecast demand.
使用样本空间排序法给出了指数分布情形下不相同定时截尾试验平均寿命置信下限的估计方法。
Sample space order method is used to give the lower confident limits of mean life under unequal time truncations for exponent distribution.
实验表明，小波滤波法能提高小故障的检测能力，而且与指数权重滑动平均滤波法相比更具有故障检测的及时性。
Experiments show that wavelet filtering can enhance the small fault detection capacity and detect more timely compared with exponentially weighted moving average (EWMA) filter.
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