Multimode Preemptive Resource Investment Problem Subject to Due Dates for Activities: Formulation and Solution Procedure

Table 1

Factors and factors levels.

Factor	Number of levels	Level 1	Level 2	Level 3
Pop, It	3	20, 100	30,  90	40, 80
	3	60%	65%	70%
	3	7%	10%	13%
	3	8%	10%	12%