Optimum Model of Drinking and Driving

In this paper, we give two differential equations concerning situations, in which a certain amount of alcohol drinks is given in a short time vs. in a long time by analysing the exchange mechanism of alcohol between the stomach (including the liver) and the body fluid (including the blood). Each coefficient is solved, based on given datas by nonlinear least square method and Gauss-Newton's algorithm. As results, we can explain why the density of alcohol in big Li's body is more than 20 milligram / one hundred milliliters in the second inspection.