Volume 13, Issue 4, August 2025

  • Research Article

    Solutions of One Dimensional Parabolic Partial Differential Equations: An Improved Finite Difference Approach

    Omowo Babajide Johnson*, Adeniran Adebayo Oludare, Adetunkasi Taiwo Flora, Ogunbanwo Samson Tolulope, Olatunji Olakunle Henry

    Issue: Volume 13, Issue 4, August 2025
    Pages: 237-244
    Received: 7 May 2025
    Accepted: 6 June 2025
    Published: 14 July 2025
    DOI: 10.11648/j.ajam.20251304.11
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    Abstract: This paper introduces a finite difference scheme derived from the classical Crank-Nicolson method. The proposed scheme offer an improved spatial accuracy while maintaining the second-order temporal accuracy of the original Crank-Nicolson scheme. The higher order of spatial accuracy leads to improved convergence properties. The consistency and stabi... Show More
  • Research Article

    Homotopy Perturbation Technique for Solving Higher Dimensional Time Fractional Burgers-Huxley Equations

    Umesh Kumari*, Inderdeep Singh

    Issue: Volume 13, Issue 4, August 2025
    Pages: 245-255
    Received: 11 June 2025
    Accepted: 14 July 2025
    Published: 31 July 2025
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    Abstract: Many real-world phenomena such as nerve pulse transmission, fluid transport, and chemical kinetics are modeled using nonlinear partial differential equations with time-fractional derivatives. Among them, the time-fractional Burgers-Huxley equation plays a significant role due to its ability to capture both diffusion and reaction mechanisms with mem... Show More
  • Research Article

    Measuring Inequality of Income Distributions in Egypt: An Empirical Study Using Weighted and Non-parametric Methods

    Eman Mohamed Hanafy*, Hend Abdulghaffar Auda, Ibrahim Hassan Ibrahim

    Issue: Volume 13, Issue 4, August 2025
    Pages: 256-273
    Received: 23 June 2025
    Accepted: 9 July 2025
    Published: 4 August 2025
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    Abstract: One of the foundational tasks in statistical analysis is the design and implementation of sample surveys, which involve sampling error that affects the reliability and precision of the resulting estimates. Measures such as totals and means are insufficient on their own without corresponding indicators of statistical precision, such as confidence in... Show More
  • Research Article

    Modified Spectral Quasilinearization Method for Solving Fluid Flow over Stretching Sheet

    Mwatela James Mwakio*, Samuel Mutua, Felicien Habiyaremye

    Issue: Volume 13, Issue 4, August 2025
    Pages: 274-281
    Received: 11 June 2025
    Accepted: 30 June 2025
    Published: 5 August 2025
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    Abstract: This study aims to develop an efficient and accurate numerical method for solving the boundary layer fluid flow over a stretching sheet using a modified spectral quasilinearization method. The governing partial differential equations (PDEs) for momentum and energy are first transformed into a system of nonlinear ordinary differential equations (ODE... Show More