Onaizah Colleges

Applications of double bond indices: Quantitative characterization of properties of benzenoid hydrocarbons

Topological indices (TIs) are widely used descriptors in QSAR/QSPR modeling, but conventional degree-based TIs neglect bond multiplicity, potentially limiting structural resolution. Thirteen extended double-bond-corrected TIs were derived via a Kekuúlé-structure-based edge classi...

Optimal Control and Cost-Effectiveness Analysis of Measles Transmission

This study develops and analyzes a deterministic compartmental model for measles transmission incorporating two-dose vaccination, imperfect dose-specific vaccine protection, breakthrough infection, and nonlinear saturated incidence. The population is divided into susceptible, fir...