| Id |
Subject |
Object |
Predicate |
Lexical cue |
| T43 |
0-71 |
Sentence |
denotes |
We adopt the transmission rate function formulated in He et al. (2013). |
| T44 |
72-179 |
Sentence |
denotes |
We rename the school term effect as the governmental action effect, since the former belongs to the latter. |
| T45 |
180-250 |
Sentence |
denotes |
We also assume a period of zoonotic transmission during December 2019. |
| T46 |
251-399 |
Sentence |
denotes |
We model the zoonotic transmission (denoted as F) as a stepwise function, which takes zero after the shutdown of Huanan seafood market (presumably). |
| T47 |
400-613 |
Sentence |
denotes |
We then only model the sustained human-to-human transmission of COVID-19 after this date, along with the emigration of 5 million population before Wuhan was officially locked down (South China Morning Post, 2020). |
| T48 |
614-794 |
Sentence |
denotes |
Thus, a compartmental model is formulated as follows:(1) S'=-β0SFN-β(t)SIN-μS,E'=β0SFN+β(t)SIN-(σ+μ)E,I'=σE-(γ+μ)I,R'=γI-μR,N'=-μN,D'=d γI-λD,andC'=σE,where(2) β(t)=β0(1−α)1−DNκ. |
