Science Journal of Applied Mathematics and Statistics

Volume 12, Issue 1, February 2024

  • Research Article

    ETS - ARIMA Intervention Modelling of Bangladesh Taka/Nigerian Naira Exchange Rates

    Elisha John Inyang*, Ngia Matthew Nafo, Anthony Ike Wegbom, Yvonne Asikiye Da-Wariboko

    Issue: Volume 12, Issue 1, February 2024
    Pages: 1-12
    Received: 20 November 2023
    Accepted: 18 December 2023
    Published: 11 January 2024
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    Abstract: In real-world scenarios, numerous external events disrupt many time series, causing fluctuations in the series' mean level. When modeling such series using the traditional ARIMA model, this can result in distortions in the model's parameter estimations, the structure of the fitted model, and future value projections. Any unusual values in the serie... Show More
  • Research Article

    Optimization of the Non-Linear Diffussion Equations

    Rukia Nasimiyu Fwamba*, Isaac Chepkwony, Wekulo Saidi Fwamba

    Issue: Volume 12, Issue 1, February 2024
    Pages: 13-19
    Received: 27 February 2024
    Accepted: 12 March 2024
    Published: 2 April 2024
    DOI: 10.11648/j.sjams.20241201.12
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    Abstract: Partial Differential Equations are used in smoothening of images. Under partial differential equations an image is termed as a function; f(x, y), XÎR2. The pixel flux is referred to as an edge stopping function since it ensures that diffusion occurs within the image region but zero at the boundaries; ux(0, y, t) = ux(p, y, t) = uy(x, 0, t) = uy(x, ... Show More