The Impact of Economy, Policy, and Medical Care on the COVID-19 Epidemic
Wang Zhili, Yang Qingqing
Sch J Phys Math Stat | 188-191
DOI : 10.36347/sjpms.2020.v07i09.001
At present, the new type of coronavirus (COVID-2019) has become a pandemic infectious disease in the world, which has caused a huge impact on the economy, people's lives, lives and property of all countries in the world. However, due to the different economic conditions and systems of various countries in the world, coupled with the inadequacy of testing equipment and personal protective equipment in many countries, the roads to fight the epidemic are different. To this end, a correlation analysis model based on economy, policy, medical treatment and the severity of the COVID-19 epidemic was constructed, and the calculation results of several correlation analysis models were compared to explore the impact of economy, policy, and medical treatment on the severity of the COVID-19 epidemic. The results show that the H-convex correlation is more suitable for the study of this problem. The impact of economy, policy, and medical treatment on the severity of the COVID-19 epidemic is negatively correlated, and the impact of the policy has reached -0.861.
Improvement and Application of Logistic Growth Model
Lan Xiao, Yanqiu Chen
Sch J Phys Math Stat | 192-196
DOI : 10.36347/sjpms.2020.v07i09.002
Logistic growth model, as an important mathematical model to describe population or population changes, is now widely used in many fields. Researchers found that the problems involved cover many disciplines such as mathematics, physics, medicine, and biology. Therefore, the Logistic growth model has a strong application background and practical significance. This paper improves the logistic growth model that introduces harvest items, and applies the improved model to population forecasting. And with the help of mathematical software and the principle of least squares method to estimate the parameters of the improved model, the curve fitting comparison verifies that the improved model can achieve better results.