2 papers
physics.soc-ph2020
Gravitational and Autoregressive Analysis Spatial Diffusion of COVID-19 in Hubei Province, China
Yanguang Chen, Yajing Li, Yuqing Long +1
The spatial diffusion of epidemic disease follows distance decay law in geography, but different diffusion processes may be modeled by different mathematical functions under differ…
physics.soc-ph2020
Fractal-based modeling and spatial analysis of urban form and growth: a case study of Shenzhen in China
Xiaoming Man, Yanguang Chen
Fractal dimension curves of urban growth can be modeled with sigmoid functions, including logistic function and quadratic logistic function. Different types of logistic functions i…