A Deterministic Inventory Model of Deteriorating Items with Two Rates of Production, Shortages, and Variable Production Cycle

Table 1

Sensitivity Analysis of Example 4.1.

Changing parameter	Change (%)	Change (%) in
		𝑄^∗1	𝑆^∗	𝑄2∗	𝑇^∗	𝐶^∗
𝐶1	+10	−3.786	−6.510	+2.467	−2.826	+0.883
	+5	−1.916	−3.376	+1.262	−1.462	+0.452
	− 5	+1.961	+3.649	−1.328	+1.571	−0.475
	−10	+3.958	+7.608	−2.726	+3.263	−0.975
𝐶2	+10	+3.628	+1.624	−7.616	−1.191	+0.581
	+5	+1.881	+0.842	−3.960	−0.622	+0.301
	− 5	−2.028	−0.908	+4.306	+0.683	−0.325
	−10	−4.223	−1.891	+9.009	+1.437	−0.677
𝐶3	+10	−0.089	−0.168	+0.062	−0.072	+0.022
	+ 5	−0.045	−0.084	+0.031	−0.036	+0.011
	−5	+0.045	+ 0.085	−0.031	+0.036	−0.011
	−10	+0.091	+0.169	−0.063	+0.072	−0.022
𝐶4	+10	−80.468	+5.337	+ 5.337	−12.126	+1.910
	+5	−38.354	+3.478	+3.478	−5.062	+1.245
	−5	+35.143	−4.861	−4.861	+3.348	−1.740
	−10	+67.384	−10.973	−10.975	+5.140	−3.927
𝐶5	+10	+58.906	−9.329	−9.179	+4.747	+3.137
	+ 5	+30.574	−4.196	−4.115	+2.965	+1.738
	−5	−33.032	+3.165	+3.079	−4.258	−2.109
	−10	−68.877	+5.148	+4.973	−9.992	−4.642
θ	+10	−0.108	−0.294	+0.102	−0.101	+0.036
	+ 5	−0.054	−0.147	+0.052	−0.051	+0.018
	−5	+0.056	+0.148	−0.052	+0.051	−0.018
	−10	+0.110	+0.296	−0.102	+0.103	−0.036
A	+10	+9.654	+4.321	+4.320	+5.422	+1.546
	+ 5	+4.890	+2.189	+2.189	+2.746	+0.783
	−5	−5.027	−2.250	−2.252	−2.823	−0.805
	−10	−10.204	−4.568	−4.570	−5.729	−1.635
𝑎	+10	+2.527	−4.392	−4.400	+10.160	+4.847
	+ 5	+2.127	−1.809	−1.814	+4.189	+2.562
	−5	−3.529	+1.179	+1.812	−2.983	−2.787
	−10	−8.259	+1.820	+1.182	−5.084	−5.767
𝑝1	+10	−36.526	+4.298	+4.296	-9.557	+1.538
	+ 5	−14.757	+2.565	+2.564	-5.313	+0.918
	− 5	+ 8.642	−3.632	−3.634	+7.214	−1.300
	−10	+11.062	−8.804	−8.804	+18.052	−3.150
𝑝2	+10	+13.856	+2.009	+2.016	−0.440	+0.721
	+ 5	+7.752	+1.098	+1.100	−0.223	+0.394
	− 5	−10.207	−1.355	−1.360	+0.210	−0.486
	− 10	−24.350	−3.081	−3.090	+0.358	−1.106