This study develops an improved Liu‑type estimator for the Poisson‑modification of the quasi‑Lindley regression model (PMQL‑RM) to handle overdispersed count data in the presence of severe multicollinearity. We first formulate the PMQL‑RM and review existing shrinkage estimators, including the PMQL ridge estimator, t...
Z. Algamal, Liban Ali Mohamud· Scientific Reports· 0 citations
Solving systems of nonlinear equations is an important problem in applied mathematics, engineering, and scientific computing. Traditional numerical methods often require derivative information and suitable initial approximations, which may reduce their effectiveness when dealing with complex nonlinear systems. This pap...
R. Karyakos, S. A. Al-kababchee, Z. Algamal et al.· مجلة العلوم الأساسـية· 0 citations
In this study, concentrations of radon in soil and the corresponding radiological health effects have been assessed in the Shaqlawa District, Erbil Governorate, Iraqi Kurdistan. Soil samples were taken across urban, suburban and agricultural areas at 25 locations. Radon concentrations were determined using CR-39 solid-...
Hamed Alnagran, I. M. Hassan, S. Othman et al.· Isotopes in environmental an...· 0 citations
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