Uploaded on 2019-05-28 by Yihang She

This picture shows a complex building at Nanjing University, with multiple functions at different floors. The ground floor is the cafeteria, and the other floors work as a innovation center used by college students. Stocks and flows within these floors include food, water, electricity, and people. Intensities of these flows varied by time, for instance, at the lunch time, the intensity of people could reach its maximum in a day, and so does the electricity used by them. Having the knowledge of the dynamics of the stocks and flows could help the managers and designers optimize the use of electricity and the other resources.