Designing a Multistage Supply Chain in Cross-Stage Reverse Logistics Environments: Application of Particle Swarm Optimization Algorithms

Table 15

The third period transportation plan by PSOA_IWM.

From	To	Stage 1			Stage 2				Stage 3					Stage 4
		1.1	1.2	1.3	2.1	2.2	2.3	2.4	3.1	3.2	3.3	3.4	3.5	4.1	4.2	4.3	4.4	4.5	4.6
Stage 1	1.1				227	24	48	73
	1.2				17	47	0	65
	1.3				900	738	84	37
Stage 2	2.1	7	3	3					133	156	180	239	383
	2.2	4	2	23					172	121	144	234	96
	2.3	2	4	1					45	0	66	27	0
	2.4	2	1	0					3	0	73	33	71
Stage 3	3.1	5	0	1	2	2	1	4						0	4	129	11	134	64
	3.2	3	2	0	2	0	2	1						4	3	100	53	57	49
	3.3	1	0	1	0	1	0	0						0	81	75	50	139	107
	3.4	0	1	3	0	0	4	0						80	50	49	174	36	125
	3.5	1	5	0	1	3	1	1						180	172	64	27	0	77
Stage 4	4.1	1	1	1	0	0	2	1	1	1	0	1	0
	4.2	0	1	0	0	0	1	0	0	1	0	0	0
	4.3	1	0	2	0	0	0	3	0	0	2	0	1
	4.4	2	0	0	0	0	1	0	0	0	0	1	0
	4.5	3	0	2	3	0	0	1	3	0	1	0	0
	4.6	1	0	2	1	0	1	0	0	1	0	0	1
Demand														250	300	400	300	350	400

Bold data are the reverse transportation volumes.