Design of a nonlinear model for the propagation of COVID-19 and its efficient nonstandard computational implementation [0.03%]
COVID-19传播的非线性模型设计及其有效的非标准计算实现
Muhammad Rafiq,J E Macías-Díaz,Ali Raza et al.
Muhammad Rafiq et al.
In this manuscript, we develop a mathematical model to describe the spreading of an epidemic disease in a human population. The emphasis in this work will be on the study of the propagation of the coronavirus disease (COVID-19). Various epi...
Transmission dynamics and control methodology of COVID-19: A modeling study [0.03%]
COVID-19的传输动态和控制方法的建模研究
Hongjun Zhu,Yan Li,Xuelian Jin et al.
Hongjun Zhu et al.
The coronavirus disease 2019 (COVID-19) has grown up to be a pandemic within a short span of time. To investigate transmission dynamics and then determine control methodology, we took epidemic in Wuhan as a study case. Unfortunately, to our...
M Núñez-López,L Alarcón Ramos,J X Velasco-Hernández
M Núñez-López
Most of the recent epidemic outbreaks in the world have as a trigger, a strong migratory component as has been evident in the recent Covid-19 pandemic. In this work we address the problem of migration of human populations and its effect on ...
Lei Zhang,Maoxing Liu,Qiang Hou et al.
Lei Zhang et al.
Seasonal forcing and contact patterns are two key features of many disease dynamics that generate periodic patterns. Both features have not been ascertained deeply in the previous works. In this work, we develop and analyze a non-autonomous...
The dynamical model for COVID-19 with asymptotic analysis and numerical implementations [0.03%]
COVID-19的动态模型及渐近分析和数值实现
Jijun Liu,Liyan Wang,Qiang Zhang et al.
Jijun Liu et al.
The 2019 novel coronavirus (COVID-19) emerged at the end of 2019 has a great impact on China and all over the world. The transmission mechanism of COVID-19 is still unclear. Except for the initial status and the imported cases, the isolatio...
Low-dose spectral CT reconstruction using image gradient ℓ 0-norm and tensor dictionary [0.03%]
基于图像梯度ℓ 0范数和张量词典的低剂量能谱CT重建算法
Weiwen Wu,Yanbo Zhang,Qian Wang et al.
Weiwen Wu et al.
Spectral computed tomography (CT) has a great superiority in lesion detection, tissue characterization and material decomposition. To further extend its potential clinical applications, in this work, we propose an improved tensor dictionary...
Effect of pollutant source location on air pollutant dispersion around a high-rise building [0.03%]
污染源位置对高层建筑周围大气污染物扩散的影响
Erfan Keshavarzian,Ruizhi Jin,Kejun Dong et al.
Erfan Keshavarzian et al.
This article investigates the dispersion of airborne pollutants emitted from different locations near a high-rise building. A Computational Fluid Dynamics (CFD) model for simulating the wind flow field and the pollutant dispersion was devel...
Sudip Samanta,Pankaj Kumar Tiwari,Abdullah K Alzahrani et al.
Sudip Samanta et al.
In this paper, we propose and analyze a nonautonomous predator-prey model with disease in prey, and a discrete time delay for the incubation period in disease transmission. Employing the theory of differential inequalities, we find sufficie...
Da-Peng Gao,Nan-Jing Huang
Da-Peng Gao
In this paper, we extend the model of Liu and Zhang (Math Comput Model 54:836-845, 2011) by incorporating three control terms and apply optimal control theory to the resulting model. Optimal control strategies are proposed to minimize both ...
Adaptive dispersal effect on the spread of a disease in a patchy environment [0.03%]
适应性扩散对分块环境中的疾病传播的影响
Chang-Yuan Cheng
Chang-Yuan Cheng
During outbreaks of a communicable disease, people intensely follow the media coverage of the epidemic. Most people attempt to minimize contact with others, and move themselves to avoid crowds. This dispersal may be adaptive regarding the i...