Table 4 Description of external variables in the SD model.
From: A system dynamics-based model for the evolution of environmental group events
Corresponding variable | SD model correspondence meaning | Initial value |
|---|---|---|
\(A_{1}\) | ECDR (enterprise cost for direct discharge with regulation) | 1 |
\(A_{2}\) | GCDR (government cost for direct discharge with regulation ) | 5 |
\(B_{1}\) | ECDNR(enterprise cost for direct discharge with no regulation) | 5 |
\(B_{2}\) | GCDNR (government cost for direct discharge with no regulation) | 2 |
\(C_{1}\) | ECNR(enterprise cost for no pollution with regulation) | 4 |
\(C_{2}\) | GCNR (government cost for no pollution with regulation) | 3 |
\(D_{1}\) | ECNNR (enterprise cost for no pollution with no regulation) | 3 |
\(D_{2}\) | GCNNR (government cost for no pollution with no regulation) | 4 |
