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An economic order quantity model for imperfect and deteriorating items with freshness and inventory level-dependent demand
Dissertation (MEng (Industrial Engineering))--University of Pretoria, 2023.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2023
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| _version_ | 1867613709584564224 |
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| access_status_str | Open Access |
| author2 | Adetunji, Olufemi |
| author_browse | Adetunji, Olufemi |
| author_facet | Adetunji, Olufemi |
| collection | Thesis |
| dc_rights_str_mv | © 2022 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MEng (Industrial Engineering))--University of Pretoria, 2023. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/89675 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:40:27.509Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/89675 An economic order quantity model for imperfect and deteriorating items with freshness and inventory level-dependent demand Adetunji, Olufemi u14200482@tuks.co.za Sebatjane, Makoena Coghlan, Deidre Ann UCTD Inventory Imperfect Deterioration Freshness Demand Dissertation (MEng (Industrial Engineering))--University of Pretoria, 2023. Consumer purchasing behaviour is influenced by many factors. Depending on the circumstances, these factors may become relevant drivers of important supply chain decisions. Expiration dates have an influence on the purchasing decision of consumers for perishable goods. Another behavioural influence that stimulates demand is the volume of goods that are available on display as part of the purchase transaction. Furthermore, the fact that certain goods deteriorate over time must also be evaluated within the context of the study of perishable goods. The market is increasingly seeking goods that have no inherent defects or imperfections. This investigation seeks to determine the impact of imperfect quality, deterioration, freshness and inventory level and also, how those issues can be improved upon in workable situations. This paper proposes an inventory model that stipulates the demand as a function of freshness and the inventory level. In addition, the inventory depletes through both deterioration and demand, and the product quality is not always perfect. The objective of the inventory model is to maximise the system’s profit, hence the study has developed a theoretical mathematical model for imperfect and deteriorating items with freshness and inventory level-dependent demand. A numerical example was used to illustrate the practical application of the model in a real life environment. Sensitivity studies were conducted to determine the impact of changes or variations to the inputs that are used in the model. The findings were that the date of expiry, the elasticity of demand and the selling price of the perfect products are the main constituents that affect the profitability. Industrial and Systems Engineering MEng (Industrial Engineering) Unrestricted 2023-02-17T12:40:35Z 2023-02-17T12:40:35Z 2023-05-12 2023 Thesis * A2023 https://repository.up.ac.za/handle/2263/89675 en © 2022 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD Inventory Imperfect Deterioration Freshness Demand An economic order quantity model for imperfect and deteriorating items with freshness and inventory level-dependent demand |
| title | An economic order quantity model for imperfect and deteriorating items with freshness and inventory level-dependent demand |
| title_full | An economic order quantity model for imperfect and deteriorating items with freshness and inventory level-dependent demand |
| title_fullStr | An economic order quantity model for imperfect and deteriorating items with freshness and inventory level-dependent demand |
| title_full_unstemmed | An economic order quantity model for imperfect and deteriorating items with freshness and inventory level-dependent demand |
| title_short | An economic order quantity model for imperfect and deteriorating items with freshness and inventory level-dependent demand |
| title_sort | economic order quantity model for imperfect and deteriorating items with freshness and inventory level dependent demand |
| topic | UCTD Inventory Imperfect Deterioration Freshness Demand |
| url | https://repository.up.ac.za/handle/2263/89675 |