Multiobjective Simulation-Based Optimization Based on Artificial Immune Systems for a Distribution Center

Table 2

Initial model settings.

Item	Value
Conveyor speed	2.5 m/sec (limit: 1–2.5 m/sec)
Conveyor spacing	1 parcel
Number of workers deployed for each conveyor entrance	7 workers (limit: 1–9 workers)
Number of workers deployed for each conveyor exit (serving 1 destination)	2 workers (limit: 1–4 workers)
Number of workers deployed for each conveyor exit (serving 2 destinations)	4 workers (limit: 1–6 workers)
Handling Capacity of Worker	1 parcel
Arrival pattern for each source	Uniform distribution with a min. of 5 sec and a max. of 10 sec
Processing time of deconsolidation process	Normal distribution with a mean of 30 sec and a standard deviation of 2 sec
Demand for each destination	Uniform distribution with a min. of 220 units and a max. of 280 units

The above model parameters are set based on the real system settings and observation.