Dr. S. T. Appiah is a Senior Lecturer working at the Department of Mathematics and Statistics, University of of Energy and Natural Resources, Sunyani. 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, Tarkwa, Ghana. He is a member of the Ghana Mathematics Society and he is interested in modeling with Differential Equations, Statistics and Optimization Techniques. He is loves Teaching and Learning, Counseling people, and Playing Chess.