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QUANTILE Threshold Autoregressive time series models

open access: yes四川大学学报. 自然科学版, 2016
In this paper, we study the estimation and forecasting of the quantile threshold autoregressive time series model. By transforming the optimization problem in the quantile regression into a maximum likelihood estimation, we can impose the Metropolis ...
ZHAO Chao, LI Dong-Fang, TANG Ya-Yong
doaj  

The Joint Impact of Heavy Metals and Polycyclic Aromatic Hydrocarbons on Periodontitis

open access: yesInternational Dental Journal
Objective: Heavy metals (HMs) and polycyclic aromatic hydrocarbons (PAHs) are significant environmental pollutants, raising growing concerns about their potential impact on human health, particularly oral health.
Ziqiu Fan   +4 more
doaj   +1 more source

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