In this paper we study a deterministic differential equation model for the spread and control of malaria, which involve two infectious classes. We derived the conditions for disease free and endemic equilibria. A comparison ...

Traffic congestion is a growing problem in many metropolitan areas as it increases travel time, air pollution, carbon dioxide (CO2) emissions and fuel use because cars cannot run efficiently. This paper seeks to model the ...

In this paper, we prove that the Wronskian W (λ) of the boundary condition functions for the following boundary value problem π: π : Lφ ≡ φ (4) ( x) + P2 (x) φ (2) ( x) + P3 (x) φ (1) ( x) + P4 (x) φ (x) = λφ (x) φ ...

The paper addresses the issue of identifying the maximum safe dose in the context of non-inferiority trials where several doses of toxicological compounds exist. Statistical methodology for identifying the maximum safe ...

This study investigated the small sample biasness of the ordered logit model parameters under multicollinearity using Monte Carlo simulation. The results showed that the level of biasness associated with the ordered logit ...

The rough micro- and nano- scale hierarchical structures on surfaces of materials render the surfaces superhydrophobic. In this context, we obtain both microscale grating structures and nanoscale induced structures (with ...

The outbreak of COVID-19 caused by SARS-CoV-2 in Wuhan and other cities in China in 2019 has become a global pandemic as declared by World Health Organization (WHO) in the frst quarter of 2020 [19]. The delay in diagnosis, ...

Preliminary studies on groundwater samples from selected wells in University of Cape Coast and its surroundings in the Central region of Ghana have been carried out to determine the annual effective dose from intake of ...

The study compares the stability states of price adjustment differential models with and without delay parameter using roots of characteristic equations. The states of stability of both models were simulated using their ...

This paper is concerned with using discontinuous Galerkin isogeometric analysis (dG-IGA) as a numerical treatment of Difusion problems on orientable surfaces Ω ⊂ R 3. The computational domain or surface considered consist ...