. 2022 Jul 30;2022:1149657. doi: 10.1155/2022/1149657

Table 2.

Parameters and descriptions used in the DSS model considering the emergency surgeries.

Parameter	Description
J _i ^S	Day surgeries that have been scheduled before the arrival of emergency surgeries
J _i ^E	Set of emergency surgeries
J _i ^RS	Day surgeries that must be rescheduled after the arrival of emergency surgeries
t _{J _i}	Arrival time of emergency surgery J_i ∈ J_i^E
t _{J _i} ^du	The latest start time of emergency surgery
e ^Rr	The available starting time of resource r when the day surgeries must be rescheduled
β	Priority parameter of emergency surgery

Decision variables
x _{J _i} ^r	Starting time of operation i of the emergency surgery J on resource r, J_i ∈ J_i^E
L _{J _i} ^r	Leaving time of operation i of the emergency surgery J on resource r, J_i ∈ J_i^E