Dr. S. T. Appiah is a senior lecturer working at the University of Energy and Natural Resources, Sunyani, Ghana. He holds the following degrees in Mathematics: BSc and MSc from the Kwame Nkrumah University of Science and Technology, Kumasi, Ghana, and PhD from the University of Mines and Technology (UMaT), Tarkwa, Ghana. He is a member of the Ghana Mathematics Society, National Association of Mathematicians and NIMS Ghana. His research interest cover modeling with Differential Equations, Optimization Techniques, Operations Research and Statistics.