This is a clone of "Fast Fashion ISCI 360 Solutions Final submission" created by user "V B" which we are using as the foundation for an exercise in the DTU course 12100 "Quantitative sustainability".

Please refer to the notes for each variable and stock to see which links were hidden from the model.

Part 2: Our solution for the issue surrounding "Fast Fashion" focuses on increasing individuals education about sustainability and how they can help reduce negative impacts on the environment by shopping less, recycling and donating. This effect of education on sustainability is seen in the "Online Shopping" equation where the impact of "Education on Sustainability" is increased by x1.5 which impacts the entire model. Furthermore, components of the feedback loop on the right are also influenced by increasing education on sustainability and thus, those values were altered accordingly. These values were chosen arbitrarily by taking into account that doubling any value is not realistic so the change should be between x1.0 and x2.0.

1) Modello stazionario (Livello acqua 10 L, afflusso 1 L/s, tasso di deflusso 0,1 /s)

2) Residence time (Livello acqua / afflusso o deflusso)
  (10 L / 1 L/s = 10 s) (es. Popolazione: 5,6 mld individui / 80 mln (nati/morti per anno) = 70 anni di sopravvivenza media)

3) Lo stato stazionario (10 L/s) viene raggiunto nello stesso tempo, 10s, definito "tempo di risposta" ed è indipendentemente dalla quantità di acqua iniziale della vasca (100 L, 200 L, 300 L, 400 L). Il tempo di risposta (secondi) è uguale al reciproco del tasso di dflusso (0,1 1/s).