Author

M. O. Akintunde

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Open access Aug 2026

Robustness of canonical vector autoregressive representations under structural misspecification

This study evaluates the robustness and efficiency of canonical Vector Autoregressive (VAR) models relative to unrestricted VARmodels under correct specification and structural misspecification across different persistence regimes. Specifically, itinvestigates whether canonical VAR representations based on Kronecker i...

Kayode Vincent Dayo, M. O. Akintunde, Hussaini Abdulkarim · ABUAD International Journal... · 0 citations

Open access Jul 2026

Robust Forecasting under Conditional Heteroskedasticity: Evidence from ARMA–GARCH and Smooth Transition GARCH Models

Aim: This study compares the efficiency of linear and non-linear time-varying volatility models in describing the conditional mean and variance dynamics of macroeconomic variables using monthly Nigerian exchange-rate data from January 2000 to December 2025. Python and EViews were used for the analysis. The study examin...

M. O. Akintunde · Asian Journal of Probability... · 0 citations

Review Open access Aug 2026

Household and Maternal Determinants of Childhood Immunization Uptake in Nigeria: An Econometric Analysis of National Survey Data

Childhood immunisation is a cost-effective public health intervention for preventing vaccine-preventable diseases and reducing mortality among children under five years of age. Despite sustained efforts by the Nigerian Government and development partners to improve coverage, national immunisation levels remain below na...

M. O. Akintunde, M. A. Akintunde, Kazeem Olarewaju Popoola · Asian journal of mathematics... · 0 citations