Science Journal of Applied Mathematics and Statistics

Volume 5, Issue 5, October 2017

  • On Derivation of the Probability of Occurrence of an Epidemic with Application to HIV/AIDS Spread Given Tuberculosis Co-infections in the Presence of Treatment

    Richard Onyino Simwa, Nelson Lwoyelo Muhati, Lucy Chikamai

    Issue: Volume 5, Issue 5, October 2017
    Pages: 169-173
    Received: 11 July 2017
    Accepted: 21 July 2017
    Published: 22 August 2017
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    Abstract: Human Immunodeficiency Virus (HIV) and Mycobacterium Tuberculosis (TB) infections are two major world’s public health problems especially in developing countries. Worldwide, 13% of TB cases are estimated to be co-infected with HIV and about a third of 33 million people living with HIV are infected with the bacterium that causes TB. Deterministic mo... Show More
  • Predictive Model with Square-Root Variance Stabilizing Transformation for Nigeria Crude Oil Export to America

    Obinna Adubisi, Titus Terkaa Mom, Chidi Emmanuel Adubisi, Phillip Luka

    Issue: Volume 5, Issue 5, October 2017
    Pages: 174-180
    Received: 20 January 2017
    Accepted: 19 September 2017
    Published: 5 November 2017
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    Abstract: In the last few decades, crude oil has claimed the topmost position in Nigerian export list, constituting a very fundamental change in the structure of Nigerian international trade. In this study, secondary data on monthly crude oil export to the United States was obtained from the Energy Information Administration (EIA) database. Using the Box-Jen... Show More
  • Numerical Strategies for the System of First Order IVPs Using Block Hybrid Extended Trapezoidal Multistep Method of Second Kind for Stiff ODEs

    Yohanna Sani Awari

    Issue: Volume 5, Issue 5, October 2017
    Pages: 181-187
    Received: 18 September 2017
    Accepted: 8 October 2017
    Published: 8 November 2017
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    Abstract: A Modified Three Step Block Hybrid Extended Trapezoidal Multistep Method of Second Kind (BHETR2s) with two off-grid points, one at interpolation and another at collocation point yielding uniform order six (6, 6, 6, 6, 6)T for the Numerical Integration of initial value problems of stiff Ordinary Differential Equations was developed. The main method ... Show More