Öznur Öztunç Kaymak,Yiğit Kaymak
Öznur Öztunç Kaymak
The world has been undergoing a global economic recession for almost two years because of the health crisis stemming from the outbreak and its effects have still continued so far. Especially, COVID-19 reduced consumer spending due to social...
Combining rank-size and k-means for clustering countries over the COVID-19 new deaths per million [0.03%]
结合等级规模和k均值聚类分析COVID-19死亡率国家数据
Roy Cerqueti,Valerio Ficcadenti
Roy Cerqueti
This paper deals with the cluster analysis of selected countries based on COVID-19 new deaths per million data. We implement a statistical procedure that combines a rank-size exploration and a k-means approach for clustering. Specifically, ...
Fractional order modelling of omicron SARS-CoV-2 variant containing heart attack effect using real data from the United Kingdom [0.03%]
基于英国真实数据的含心脏病发作用的omicron变异株分数阶模型
Fatma Özköse,Mehmet Yavuz,M Tamer Şenel et al.
Fatma Özköse et al.
In this study, a new approach to COVID-19 pandemic is presented. In this context, a fractional order pandemic model is developed to examine the spread of COVID-19 with and without Omicron variant and its relationship with heart attack using...
Modeling COVID-19 dynamic using a two-strain model with vaccination [0.03%]
使用双毒株模型进行COVID-19动态模拟及疫苗接种研究
Ugo Avila-Ponce de León,Eric Avila-Vales,Kuan-Lin Huang
Ugo Avila-Ponce de León
Multiple strains of the SARS-CoV-2 have arisen and jointly influence the trajectory of the coronavirus disease (COVID-19) pandemic. However, current models rarely account for this multi-strain dynamics and their different transmission rate ...
K Choi,Hoyun Choi,B Kahng
K Choi
The COVID-19 pandemic is still ongoing worldwide, and the damage it has caused is unprecedented. For prevention, South Korea has adopted a local quarantine strategy rather than a global lockdown. This approach not only minimizes economic da...
Modeling and optimal control of mutated COVID-19 (Delta strain) with imperfect vaccination [0.03%]
考虑不完美疫苗接种的Delta毒株疫情传播和最优控制模型研究
Tingting Li,Youming Guo
Tingting Li
As people around the world work to stop the COVID-19 pandemic, mutated COVID-19 (Delta strain) that are more contagious are emerging in many places. How to develop effective and reasonable plans to prevent the spread of mutated COVID-19 is ...
Sensitivity theorems of a model of multiple imperfect vaccines for COVID-19 [0.03%]
关于COVID-19多个不完美疫苗模型的灵敏度定理
Fernando Javier Aguilar-Canto,Ugo Avila-Ponce de León,Eric Avila-Vales
Fernando Javier Aguilar-Canto
In response to the ongoing pandemic of COVID-19, several companies across the world have proposed a wide variety of vaccines of different mechanisms of action. As a consequence, a new scenario of multiple imperfect vaccines against the SARS...
Multifractal analysis of chest CT images of patients with the 2019 novel coronavirus disease (COVID-19) [0.03%]
新型冠状病毒肺炎患者胸部CT影像的多重分形分析
Bandar Astinchap,Hamta Ghanbaripour,Raziye Amuzgar
Bandar Astinchap
The present study was done to evaluate chest computed tomography (CT) images of patients with 2019 novel coronavirus disease (COVID-19) by multifractal technique as a new method to find a way for comparing lung infection quantitatively and ...
A remark on "COVID-19: Perturbation dynamics resulting chaos to stable with seasonality transmission" [Chaos, Solitons and Fractals 145 (2021) 110772] [0.03%]
关于“COVID-19：季节性传播引起的扰动动力学导致从混沌到稳定”的评论
Avishek Chakraborty
Avishek Chakraborty
In Batabyal (2021)[2], introducing an extension of the well-known susceptible-exposed-infected-recovered (SEIR) model with seasonality transmission of SARS-CoV-2, the author has derived and discussed various analytical and numerical results...
Lu Yin,YiKang Lu,ChunPeng Du et al.
Lu Yin et al.
Recent outbreaks of novel infectious diseases (e.g., COVID-19, H2N3) have highlighted the threat of pathogen transmission, and vaccination offers a necessary tool to relieve illness. However, vaccine efficacy is one of the barriers to eradi...