Tziora, Eirini, Karakatsoulis, Georgios, Skouri, Konstantina and Syntetos, Aris  ORCID: https://orcid.org/0000-0003-4639-0756
2026.
On the impact of supply uncertainty on inventory decisions: EOQ-based models.
International Journal of Production Research
10.1080/00207543.2025.2606914
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Abstract
Inventory management is influenced by both demand and supply uncertainty, with the latter often manifesting as yield variability, where delivered quantities deviate from orders. This study develops a unified framework to analyse four key sources of variability in order quantities: (1) random yield, where deliveries differ from the order quantity; (2) random quality, where received items include defects identified through post-delivery inspection; (3) random capacity, where supplier limitations prevent full order fulfillment; and (4) supply disruption, where the order fails to materialise. Within an EOQ context and under an (s,S) policy, we derive a common long-run average cost formulation for all four uncertainty types and determine the cost-minimising inventory policies. We conduct both theoretical and numerical comparisons, examining impacts on total cost, optimal policy parameters, and replenishment intervals. Beyond providing a unified perspective on yield-related supply uncertainty, our findings offer guidance for supplier evaluation and selection.
| Item Type: | Article |
|---|---|
| Date Type: | Published Online |
| Status: | In Press |
| Schools: | Schools > Business (Including Economics) |
| Additional Information: | RRS policy applied |
| Publisher: | Taylor & Francis |
| ISSN: | 0020-7543 |
| Date of First Compliant Deposit: | 8 January 2026 |
| Date of Acceptance: | 11 December 2025 |
| Last Modified: | 08 Jan 2026 15:15 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/183570 |
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