COVID-19病例与城市人口规模的标度律及其时间演化
许刚, 焦利民, 李新虎, 肖逸雄, 宫鹏, 龚健雅

Scaling law of COVID-19 cases and city size and its evolution over time
XU Gang, JIAO Limin, LI Xinhu, XIAO Yixiong, GONG Peng, GONG Jianya
图7 2020年6月10—20日美国各州COVID-19病例标度指数均值的空间分布
Fig. 7 Spatial distributions of averaged scaling exponents of COVID-19 cases and deaths from June 10, 2020 to June 20, 2020 in each state of the United States