Monitoring stability of nonconformities per unit with efficient memory-type structure
For monitoring the qualitative characteristics of interest attribute control charts are recommended. Poisson control charts are most frequently used to track the number of nonconformities per unit in industrial processes during the inspection. This study introduces a Poisson EWMA (PEWMA) charting sc...
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| Format: | Article |
| Language: | en |
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Penerbit Universiti Kebangsaan Malaysia
2025
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| Online Access: | http://journalarticle.ukm.my/26334/1/SMS%2018.pdf http://journalarticle.ukm.my/26334/ https://www.ukm.my/jsm/english_journals/vol54num9_2025/contentsVol54num9_2025.html |
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| _version_ | 1854093987429744640 |
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| author | Hafeez, Waqar Abbas, Zameer Nazir, Hafiz Zafar Sultan, Sajid |
| author_facet | Hafeez, Waqar Abbas, Zameer Nazir, Hafiz Zafar Sultan, Sajid |
| author_sort | Hafeez, Waqar |
| building | Tun Sri Lanang Library |
| collection | Institutional Repository |
| content_provider | Universiti Kebangsaan Malaysia |
| content_source | UKM Journal Article Repository |
| continent | Asia |
| country | Malaysia |
| description | For monitoring the qualitative characteristics of interest attribute control charts are recommended. Poisson control charts are most frequently used to track the number of nonconformities per unit in industrial processes during the inspection. This study introduces a Poisson EWMA (PEWMA) charting scheme using a progressive paradigm (PEWMA-p) to improve the sensitivity of the PEWMA chart for possible combinations of smoothing parameters. The proposed PEWMA-p chart has been developed for Poisson processes to monitor nonconformities per unit. The run-length (RL) profiles of the proposed PEWMA-p chart have been computed using extensively applied Monte Carlo simulations. The proposed PEWMA-p chart super-passes the counterparts for monitoring small shifts. An illustrative implementation related to the food quality for the proposed PEWMA-p with existing competitors is also part of the study which highlights the importance of the proposed chart. |
| format | Article |
| id | my-ukm.journal.26334 |
| institution | Universiti Kebangsaan Malaysia |
| language | en |
| publishDate | 2025 |
| publisher | Penerbit Universiti Kebangsaan Malaysia |
| record_format | eprints |
| spelling | my-ukm.journal.263342026-01-05T08:40:02Z http://journalarticle.ukm.my/26334/ Monitoring stability of nonconformities per unit with efficient memory-type structure Hafeez, Waqar Abbas, Zameer Nazir, Hafiz Zafar Sultan, Sajid For monitoring the qualitative characteristics of interest attribute control charts are recommended. Poisson control charts are most frequently used to track the number of nonconformities per unit in industrial processes during the inspection. This study introduces a Poisson EWMA (PEWMA) charting scheme using a progressive paradigm (PEWMA-p) to improve the sensitivity of the PEWMA chart for possible combinations of smoothing parameters. The proposed PEWMA-p chart has been developed for Poisson processes to monitor nonconformities per unit. The run-length (RL) profiles of the proposed PEWMA-p chart have been computed using extensively applied Monte Carlo simulations. The proposed PEWMA-p chart super-passes the counterparts for monitoring small shifts. An illustrative implementation related to the food quality for the proposed PEWMA-p with existing competitors is also part of the study which highlights the importance of the proposed chart. Penerbit Universiti Kebangsaan Malaysia 2025 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/26334/1/SMS%2018.pdf Hafeez, Waqar and Abbas, Zameer and Nazir, Hafiz Zafar and Sultan, Sajid (2025) Monitoring stability of nonconformities per unit with efficient memory-type structure. Sains Malaysiana, 54 (9). pp. 2327-2335. ISSN 0126-6039 https://www.ukm.my/jsm/english_journals/vol54num9_2025/contentsVol54num9_2025.html |
| spellingShingle | Hafeez, Waqar Abbas, Zameer Nazir, Hafiz Zafar Sultan, Sajid Monitoring stability of nonconformities per unit with efficient memory-type structure |
| title | Monitoring stability of nonconformities per unit with efficient memory-type structure |
| title_full | Monitoring stability of nonconformities per unit with efficient memory-type structure |
| title_fullStr | Monitoring stability of nonconformities per unit with efficient memory-type structure |
| title_full_unstemmed | Monitoring stability of nonconformities per unit with efficient memory-type structure |
| title_short | Monitoring stability of nonconformities per unit with efficient memory-type structure |
| title_sort | monitoring stability of nonconformities per unit with efficient memory-type structure |
| url | http://journalarticle.ukm.my/26334/1/SMS%2018.pdf http://journalarticle.ukm.my/26334/ https://www.ukm.my/jsm/english_journals/vol54num9_2025/contentsVol54num9_2025.html |
| url_provider | http://journalarticle.ukm.my/ |