Model Mathematics

Component: environment

Component: A

dd time A = f ⁢ v_tilday ⁢ G 1+ b4 + sigma4 ⁢ R - muA ⁢ A

Component: R

ddtimeR= pi4 ⁢ E + beta ⁢ A - muR ⁢ R

Component: E

ddtimeE= lambdaE ⁢ A - muE ⁢ E

Component: G

ddtimeG= gamma ⁢ E - v_tilday ⁢ G + muG ⁢ G