Difference Equation Model-Based <math xmlns="http://www.w3.org/1998/Math/MathML" id="M1"> <msub> <mrow> <mtext>PM</mtext> </mrow> <mrow> <mn>2.5</mn> </mrow> </msub> </math> Prediction considering the Spatiotemporal Propagation: A Case Study of Bohai Rim Region, China
Discrete dynamics in nature and society