Mathematics and Computer Science

Archive

Volume 8, Issue 4, July 2023

  • Frailty Models Under Xgamma Distribution with Application to Survival Data

    Ashok Kumar Palanisamy, Muthukumar Madaswamy

    Issue: Volume 8, Issue 4, July 2023
    Pages: 87-93
    Received: 26 July 2023
    Accepted: 14 August 2023
    Published: 31 August 2023
    DOI: 10.11648/j.mcs.20230804.11
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    Abstract: Frailty models provide an alternative to proportional hazards models, which are designed to discover the properties of the unobserved heterogeneity in individual risks of disease and death. In spite of this distribution of the frailty is normally assumed to be continuous. In some circumstances, it is appropriate to recollect discrete frailty distri... Show More
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  • Research Article

    On Computing the Metric Dimension of the Families of Alternate Snake Graphs

    Basma Mohamed, Mohamed Amin

    Issue: Volume 8, Issue 4, July 2023
    Pages: 94-103
    Received: 13 September 2023
    Accepted: 8 October 2023
    Published: 30 October 2023
    DOI: 10.11648/j.mcs.20230804.12
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    Abstract: Consider a robot that is trying to determine its current location while navigating a graph-based environment. To know how distant it is from each group of fixed landmarks, it can send a signal. We handle the problem of precisely identifying the minimum number of landmarks needed and their ideal placement to guarantee the robot can always discover i... Show More
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