Optimization Model and Algorithm of Empty Pallets Dispatching under the Time-Space Network of Express Shipment

Table 1

Parameters of supply and demand.

Pallets; type	Leasing price ($)	Supply point	Storage cost in decision period ($/t)	Supply	Demand; point	Demand	Transport time requirement (d)
							The shortest time	The longest time
	1.2	o1	0.29	5 020		1 046	5	7
		o2	0.28	3 200
		o3	0.22	2 480		3 089	4	7
	1	o1	0.29	3 610		743	5	6
		o2	0.28	4 900
		o3	0.22	1 210		1 615	4	6
	1.3	o1	0.29	2 600		1 615	5	7
		o2	0.28	4 260
		o3	0.22	1 100		862	4	7