【摘要】 以φ-城市吸引力为依据,借用物理学中"表面张力"(表面势)的概念,把分子的凝聚和逃逸理解为人口的流进与流出,把电场强度理解为城市的政策、法规、法令,把电解溶液的电导率理解为对政策、法规、法令的执行情况,建立了城市流动人口的数学模型.从人口变动的角度分析该模型,从而求得了φ-城市吸引力的值.更多还原

【Abstract】 With its basis on city attraction-φ and adoption of surface tension in physics,a math model about the floating population in city is established in this paper.This model takes the coacervation and escape of the molecule as the inflow and outflow of the population,the electric field intensity as the policy,and the electric conductivity in electrolytic solution as the enforcement of the policy.The model is analyzed from the angle of population fluctuation to render the value of φ.更多还原