5 articles for “Log Rank”

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Research ArticleOpen accessIn the keywordsModelling the Efficacy of Antiretroviral Treatment in HIV Patients: Case of Dr George Mukhari Academic Hospital in Tshwane, Gauteng Province, South AfricaMadimetja Marcus Motshwane, Solly Matshonisa SeeletseThis paper used survival analysis to evaluate the efficacy of antiretroviral (ARV) treatment in HIV patients and also to determine if ARVs reduces the risk of HIV/AIDS. Secondary data were collected from files archived in Tshepang Clinic in Dr George Mukhari Academic Hospital in Tshwane, Gauteng Province of South Africa. Survival time was regressed on influential variables that affect survival. … …American Journal of Applied Sciences, Vol. 13, Issue 8 · 17 Aug 2016 · 7,768 accessesView PDF Cite

Research ArticleOpen accessIn the abstractOptimized XGBoost for Ethereum Fraud Detection: A Cost-Sensitive ApproachSupriya P., Rubah Sheriff, Shreya Padaki et al.In today’s technologically advancing world, many fields from finance to healthcare and education are shifting toward a digital and decentralized format. A significant transformation is underway with the currency of the masses. Blockchain-based cryptocurrencies like Bitcoin and Ethereum allow users to generate fungible tokens anonymously through smart contracts. However, these features also facilitate illicit transactions and cybercrimes like fraud, phishing, … …Journal of Computer Science, Vol. 21, Issue 12 · 10 Jan 2026 · 2,770 accessesView PDF Cite

Research ArticleOpen accessIn the abstractUse of Quinolones in Bull Semen Extenders to Reduce Sperm Deoxyribonucleic Acid DamageClara Gonzalez-Marin, Michael Eduard Kjelland, Rosa Roy et al.Cryopreserved sperm samples from Holstein bulls (n = 20) were examined for bacterial presence and Sperm DNA Fragmentation (SDF) dynamics. SDF was assessed after thawing (T0) and at 4, 24 and 48 h of incubation (37°C) and the rate of SDF (r-SDF), as an estimator of the DNA degradation over time, was calculated. Two groups of bulls were identified based … …American Journal of Animal and Veterinary Sciences, Vol. 7, Issue 4 · 29 Dec 2012 · 7,430 accessesView PDF Cite

Research ArticleOpen accessIn the abstractBayesian Methods for Ranking the Severity of Apnea among PatientsNur Zakiah Mohd Saat, Kamarulzaman Ibrahim, Abdul Aziz JemainProblem statement: Studies on apnea patients are often carried out based on data obtained from the sleep study. This data is quite scarce since high cost is required for conducting the study. Bayesian method is particularly suitable for analyzing limited data as it allows for updating of information by combining the current information with the prior belief. Approach: In this … …American Journal of Applied Sciences, Vol. 7, Issue 2 · 28 Feb 2010 · 7,550 accessesView PDF Cite

Research ArticleOpen accessAll words, across the recordNormalized Web Distance Based Web Query ClassificationS. Lovelyn Rose, K. R. ChandranProblem statement: The problem is to classify a given web query to a set of 67 target categories. The target categories are ranked based on the degree of similarity to a given query. Approach: The feature set is the set of intermediate categories retrieved from a directory search engine for a given query. Using direct mapping and Normalized Web Distance … …Journal of Computer Science, Vol. 8, Issue 5 · 9 Mar 2012 · 6,589 accessesView PDF Cite