Model Mathematics

Component: environment

Component: P

ddtimeP=a⁢Q-b⁢PK+P

Component: P_star

P_star=V_4V_3⁢1+2⁢K_31+2⁢K_4

Component: Q

ddtimeQ=V_1⁢1-QK_1+1-Q-V_2⁢R⁢QK_2+Q

Component: R

ddtimeR=P⁢V_3⁢1-RK_3+1-R-V_4⁢RK_4+R

Component: R_star

R_star=V_1V_2⁢1+2⁢K_21+2⁢K_1