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Table 1 Iterations of the proposed searching algorithm for \(t_{1}^{*}\) for the extended EMQ model 1

From: Producer–retailer integrated EMQ system with machine breakdown, rework failures, and a discontinuous inventory issuing policy

β

Step #

\(t_{{1{\text{U}}}}^{*}\)

u L = \(e^{{ - \beta t_{{1{\text{U}}}} }}\)

\(t_{{1{\text{L}}}}^{*}\)

u U = \(e^{{ - \beta t_{{1{\text{L}}}} }}\)

Difference between \(t_{{1{\text{U}}}}^{*}\) and \(t_{{1{\text{L}}}}^{*}\)

[U]E[TCU(\(t_{{1{\text{U}}}}^{*}\))]

[L]E[TCU(\(t_{{1{\text{L}}}}^{*}\))]

Difference between [U] and [L]

0.5

Initial

0.0000

1.0000

 

1st

0.4595

0.7947

0.3056

0.8583

0.1539

$10,417.21

$10,323.69

$93.52

 

2nd

0.3407

0.8434

0.3301

0.8479

0.0106

$10,317.90

$10,317.30

$0.60

 

3rd

0.3326

0.8468

0.3318

0.8472

0.0008

$10,317.28

$10,317.27

$0.01

 

4th

0.3321

0.8470

0.3320

0.8471

0.0001

$10,317.27

$10,317.27

$0.00

 

5th

0.3320

0.8471

0.3320

0.8471

0.0000

$10,317.27

$10,317.27

$0.00