Resource Constrained Project Scheduling Subject to Due Dates: Preemption Permitted with Penalty

Table 4

The effect of preemption cost and resource availability type.

Number of activities	Preemption cost	Resource availability
		Constant		Variable
		NOPR	𝑍	NOPR	𝑍
20	Low	87	391.65	91	375.18
20	Medium	68	427.13	74	450.62
20	High	33	476.97	35	507.12
30	Low	114	680.34	119	716.46
30	Medium	97	792.50	108	788.31
30	High	46	847.61	54	864.77