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| | Symbol | Description |
|
| Deterministic parameters | Φ | The number of periods in planning horizon |
| T | Time interval of each period |
| e | Unit transportation fee (RMB/ km•U, U is the abbreviation of blood Units. 1 Unit equals 200 ml) |
| v | The velocity of transportation (km/h) |
| α | Demand service level (confidence level) |
| ri | Inventory holding cost per unit of blood bank i (RMB/U•h) |
| ci | Fixed construction cost of blood bank i (RMB) |
| uh | Inventory holding cost per unit of hospital h (RMB/U•h) |
| tki | Transportation time from donor point k to blood bank i (h) |
| tih | Transportation time from blood bank i to hospital h (h) |
| disnh | Distance from potential disaster point n to hospital h. (km) |
| la | Lifespan of blood product a (h) |
| fkab | Supply capacity of blood product a with type b in donor point k (U) |
| dhab | Daily demand for blood product a with type b per hour in hospital h(U/h) |
| 1 if blood type is able to substitute type b, 0 otherwise. |
| ∆T | The continuous blood transfusion time in the first-time treatment (h) |
|
| Stochastic parameters | ps | Probability of scenario s(∈S) |
| Transportation time from the actual disaster point to hospital h under scenario s(h) |
| 1 if hospital h is available to the injured under scenario s, 0 otherwise. |
| 1 if the injured are sent to hospital h under scenario s, 0 otherwise. |
| Emergency demand for blood product a with type b under scenario s (U/h) |
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