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[会议论文] 作者：Cheng Xi Yu,
来源：中国信息经济学会 年份：2005
The difference of most Non-stationary time series is stationary，but it always has an excessive tendency.This paper discusses the fractional order difference of non—stationary time series in theorial a...
[期刊论文] 作者：KE Shen,KE Qin Mei,JIA Wen Jing,CHENG Xi Yu,LI Hao,ZHANG Jie Ying,LUO Hui Fang,HE Jin Sheng,CHEN Zhi,
来源：Biomedical and Environmental Sciences 年份：2015
A survey involving 6103 participants from five Chinese provinces was conducted to evaluate the threshold value of urinary cadmium(UCd)for renal dysfunction as b...
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