Effective Investment to Reduce Setup Cost in a Mixture Inventory Model Involving Controllable Backorder Rate and Variable Lead Time with a Service Level Constraint

Table 5

Effects of change in the parameters for power investment case in Example 4.2.

Parameters	% of change	% of change in			𝐿𝑠
		𝐴𝑠	𝑄𝑠	EAC^𝑃(⋅)
ℎ	+50	−11.27	−18.42	+23.66	4
	+40	−7.04	−18.42	+19.77	4
	+25	−14.08	0	+12.60	6
	−25	+22.54	+13.16	−12.21	6
	−40	+36.62	+30.26	−20.65	8
	−50	+54.93	+51.32	−26.94	8
𝐷	+50	−23.94	0	+12.31	6
	+40	−19.72	0	+10.13	6
	+25	−14.08	0	+6.62	6
	−25	+22.54	0	−8.02	6
	−40	+42.25	0	−13.89	6
	−50	+76.06	−13.16	−19.01	4
𝜆	+50	+76.06	+15.79	+8.61	6
	+40	+59.15	+10.53	+7.36	6
	+25	+36.62	+2.63	+5.02	6
	−25	−32.39	0	−6.06	6
	−40	−49.30	0	−10.46	6
	−50	−59.15	0	−13.88	6
𝜔	+50	−1.41	0	−1.70	6
	+40	0	0	−1.11	6
	+25	+1.41	0	−0.42	6
	−25	−9.86	0	−0.98	6
	−40	−22.54	0	−2.65	6
	−50	−33.80	0	−4.46	6

𝜉=0.5; 𝐿_𝑠 in weeks.