ON EXPONENTIALLY WEIGHTED MOVING AVERAGE CONTROL CHART FOR TIME TRUNCATED LIFE TEST USING INVERSE WEIBULL DISTRIBUTION
DOI:
https://doi.org/10.33003/fjs-2023-0705-2015Keywords:
Control Charts, EWMA, Inverse weibull distribution, Moving average, average rerunAbstract
Statistical control charts are widely used in industry for process and measurement control to monitor production processes in order to discover any problem or issues that may arise during the production process and to help in finding solutions for these issues. This research proposes the exponentially weighted moving average (EWMA) control chart, comparing it’s performance to NP and MA control chart for monitoring the number of nonconforming with the truncated lifetime of a product when the lifetimes of products follows inverse Weibull (IW) distribution. The number of failures during the life test is used as an indicator of the quality of the product. EWMA control chart was proposed for this specific situation, thus extending the applicability of control charts methodology to situations involving truncated life tests. The performance of these control charts was measured with the average run length (ARL). The simulation shows that the results obtained from the EWMA chart using IW distribution is more sensitive in detecting small shift and performs much better to monitoring shifts as when compared to other control charts considered in the study.
References
Agun, A., Andrew, G. O., Olanitola, O.S. and AbdulRahman, F.M. (2003). Studies on antimicrobial activity of Argermone Mexicana (Linn). Papa ravace Journal of Tropical Biosciences,3:90-94.
Assous MTM, El-Waseif KHM, Gado GBA. (2013) Production and evaluation of non traditional products from lemon grass. Egyptian Journal of Agriculture Research. 91(1):271 -283
Asuquo TS. (2011) Comparative study on the antimicrobial activities of the ethanolic extracts of lemon grass and Polyalthialongifolia. J Basic Appl Pharm Sci.1:174.
Deepak Kumar, (2017) Neetu prased, Gaurav. TLC profiling of olea eureaupea by Soxlet apparatus, IJR. 6:2250-1991, 5.761.
Di Pasqua R, Betts G, Hoskins N, Edwards M, Ercolini D, Mauriello G, et al. (2007). ,Membrane toxicity of antimicrobial compounds from essential oils. J Agric Food Chem; 55:4863-70.
Ekpenyong, C.E, Akpan, E.E, Daniel, N.E., (2014) Therapeutic Applications andToxicological Profie of Cymbopogon citratus Stapf (DC) Leaf Extract, Phytochem.Constituents 3 (1): 133–141
Erminawati, Naufalin R, Sitoresmi I, Sidik W, Bachtiar A.(2019). Antioxidant activity of microencapsulated lemongrass (Cymbopugon citratus) extract. In: InternationalConference on Sustainable Agriculture for Rural Development (ICSARD 2018), Indonesia, October 23-24, 2018. IOP Conference Series: Earth and EnvironmentalScience (Volume 250). Purwokerto, IOP Publishing Ltd. 012054-1 -012054-6
Farooqi AA. and B.S. Sreeramu (2001). BS. In: Cultivation of medicinal and aromatic crops Universities Press (India) Ltd., Hyderabad, 647
Gazwi HSS.(2020). Preventive effect of lemongrass (Cymbopogon citratus) against oxidation in soybean oil. Proceedings of the National Academy of Sciences, India Section B: Biological Sciences. 90:151 -159
Geetha, T.S and Geetha, N., (2014) Quantitative Analysis of Primary and SecondaryMetabolites of Cymbopogan citratus (DC) stapf . leaves from Kodaikanal hills ,Tamilnadu, Phytochem. Screen. 6 (2) 521–529.
Hammer K A, Carson CF, Riley TV. (1999). Antimicrobial activity of essential oils and other plant extracts.J Appl Microbiol. 86:985-90.
Harborne J B. (1987). Pythochemical Methods.2nd Edition, Chapman and Hall, New York.
Hasim SF, Ayunda RD, Faridah DN. (2015). Potential of lemongrass leaves extract (Cymbopogon citratus) as prevention for oil oxidation. Journal of Chemical andPharmaceutical Research. 7(10):55-60
Madan KA, Devaki T. (2015). Geraniol, a component of plant essential oils–a review of its pharmacological activities. Int J Pharm Pharm Sci;7:67-70.
Nazar S, Ravikumar S, Williams GP, Ali MS, SuganthiP. (2009), Screening of Indian coastal plant extracts for larvicidal activity of Culexquinquefasciatus. Indian Journal of Science and Technology. 2(3):24–7.
Njar, V.C.O., Gediya, L., Purushottamachar, P., Chopra, P., Vasaitis, T.S.,Khandelwal, A., Mehta, J., Huynh, C., Belosay, A., Patel, J., (2006), Retinoic acid metabolismblocking agents (RAMBAs) for treatment of cancer and dermatological diseases, Bioorg. Med. Chem. 14(13) 4323–4340, https://doi.org/10.1016/j. bmc.2006.02.041.
Oladeji OS, Adelowo FE, Ayodele DT, Odelade KA. (2019) Phytochemistry and pharmacological activities of citratus: a review. Scientific African. 6:e00137
Owusu D.A, Afedzi A.E.K., and Quansah L., (2021) Phytochemical and proximate content of carapa prrocera bark and its antimoicrobial potential against selected pathogens. PLos one, 16 (12 December), pp1-10
Owusu-Ansah, Patrick, Abdul Razak Alhassan, Augustina Adongo Ayamgama Emmanuel Gameli Adzaworlu, Newlove Akowuah Afoakwah, Gustav Komla Mahunu, Francis Kweku Amagloh, (2023), Phytochemical analysis, enumeration, isolation, and antimicrobial activity of lemongrass and moringa leaves extracts. Journal of Agriculture and Food Research 12: 100579
Ranitha M, Nour AH, Sulaiman ZA, Nour AH. (2014). A Comparative study of lemongrass (Cymbopogoncitratus) essential oil extracted by microwave-assisted hydrodistillation (MAHD) and conventional hydrodistillation (HD) method. International Journal of Chemical Engineering and Applications. 5(2):104.
Rao RR and Jamir NS (2012)Ethnobotanical studies in Nagaland. Indian medicinal plants.Society for Economic Botany, 36: 176- 181.
Shendurse AM, Sangwan RB, Amit Kumar, Ramesh V, Patel AC, Gopikrishna G and Roy SK (2021). Phytochemical screening and antibacterial activity of lemongrass (Cymbopogon citratus) leaves essential oil Journal of Pharmacognocy and Phytochemistry. 10(2): 445-449 ISSN: 2349-8234
Siddiqui AA, Ali, M., (1997) Practical pharmaceutical chemistry. Ist edition. C B S Publishers and Distributors, New Delhi, Pp-126-131.
Yanah, Y. M., Elinge C. M., Nwaogu, J., Sani, I., Samuel, R., Abdullahi H. P., Jabaka, R.D. (2020). Jounal of innovation Research in life Sceince. April. 2020, 2(1): 21-26 phytochemical screening and Antimicrobial Activity of olive leaves extract( Olea europaea)
Zhou, J., Ghoroghi, S., Benito-Martin, A., Wu, H., Unachukwu, U.J., Einbond, L.S.,Guariglia, S., Peinado, H. and Redenti, S., (2016). Characterization of induced pluripotent stem cell microvesicle genesis, morphology and pluripotent content, Sci. Rep. 6(1) 1–10, https://doi.org/10.1038/srep19743.
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