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Chacha Stephen Chacha

Name
Chacha Stephen Chacha

Academic Rank
Senior Lecturer

Department
Mathematics, Physics, and Informatics

Biography

Biography

Dr. Chacha Stephen Chacha (PhD) is a Senior Lecturer in the Faculty of Science at Mkwawa University College of Education (MUCE) within the Department of Mathematics, Physics, and Informatics in Iringa, Tanzania. With a notable academic trajectory, he obtained his PhD in Mathematics from Pusan National University, South Korea. Dr. Chacha's commitment to academia, research, and the pursuit of knowledge is exemplified through his multifaceted contributions within the university.

As an accomplished educator and researcher, Dr. Chacha not only imparts knowledge to students but also engages in groundbreaking research endeavors. Additionally, he serves as the Acting Director of Postgraduate Studies at MUCE, underscoring his commitment to fostering academic excellence beyond the classroom.

Dr. Chacha's research focuses on Mathematical Modelling of Infectious Diseases, Numerical Methods, Nonlinear Matrix Equations, and Optimization (Scheduling) and Mathematics Education making substantial contributions to mathematical analysis and nonlinear equations with broad applications across diverse domains.

 

Contacts

Email:

Email Address
chacha.chacha@muce.ac.tz

Research Interest

Research Interest
Numerical Analysis, Disease modelling, Optimization, Machine Learning

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Projects

Projects

Research Projects: Dr. Chacha actively engages in a multitude of research initiatives, wielding influence as both a Principal Investigator and an Assistant Consultant/Researcher. Notable projects include:

  • Principal Investigator: Spearheading the project titled "Promoting Mathematics Teachers’ Understanding and Implementation of the Jigsaw Strategy in Teaching and Learning of Mathematics in Tanzania," sponsored by MUCE (2023-2024).

Co-Investigator: Collaborating on the project endeavoring to "Enhance the Use of ICT Among Mathematics Teachers to Elevate Student Academic Performance in Tanzanian Secondary Schools," generously sponsored by MUCE (2023-2024).

Publications

Publications

1. Nguni, A., Chacha, C. S., & Mtunya, A. P. (2023). An Efficient Derivative Free Iterative Method and Condition Number of Nonlinear Equations Arising from Real World Phenomena. Tanzania Journal of Science, 49(3), 625-632.

2. Mwasunda, J. A., Chacha, C. S., Stephano, M. A., & Irunde, J. I. (2022). Modelling cystic echinococcosis and bovine cysticercosis co-infections with optimal control. Computational and Applied Mathematics, 41(8), 342

3.Chacha, C. S. (2022). On solution and perturbation estimates for the nonlinear matrix equation

𝑋 – 𝐴*𝑒𝑋𝐴 = 𝐼 Journal of the Egyptian Mathematical Society, 30(1), 1-18.

4. Mwasunda, J. A., Irunde, J. I., Stephano, M. A., & Chacha, C. S. (2023). Fish-borne parasitic zoonoses transmission dynamics: The case of anisakiasis. Informatics in Medicine Unlocked, 38, 101205.

5. Stephano, M. A., Irunde, J. I., Mwasunda, J. A., & Chacha, C. S. (2022). A continuous time Markov chain model for the dynamics of bovine tuberculosis in humans and cattle.

6. Chacha, C. S. (2022). On iterative algorithm and perturbation analysis for the nonlinear matrix equation. Communications on Applied Mathematics and Computation, 4(3), 1158-1174.

7. Mwasunda, J. A., Chacha, C. S., Stephano, M. A., & Irunde, J. I. (2022). Modelling cystic echinococcosis and bovine cysticercosis co-infections with optimal control. Computational and Applied Mathematics, 41, 342.

8. Chacha Stephen Chacha (2021). Elegant Iterative Methods for Solving a Nonlinear Matrix Equation X – A*eXA = I, Tanzania Journal of Science.

9. Chacha Stephen Chacha and Hyun-Min Kim (2019). An efficient iterative algorithm for finding a nontrivial symmetric solution of the Yang-Baxter-like matrix equation. Journal of Nonlinear Sciences and Applications 12(1), 2019, 21-29.

10. Chacha, C. S. (2021). Inversion free Iterative Method for Finding Symmetric Solution of the Nonlinear Matrix Equation 𝑋 − A*XqA = I. Tanzania Journal of Science, 47(4), 1392-1401.

11. Chacha Stephen Chacha and Syed Muhammad Raza Shah Naqvi (2018). Condition Numbers of the Nonlinear Matrix Equation Xn – A*eXA = I. Journal of Function Spaces Volume 2018, Article ID 3291867, 8 pages; Available at https://doi.org/10.1155/2018/3291867

12. Chacha Stephen, Allen Rangia Mushi (2022). Optimal Solution Strategy for University Course Timetabling Problem. International Journal of Advanced Research in Computer Science Volume 4, No. 2, Jan-Feb 2013.

13. Chacha Stephen Chacha (2019). Elementwise Minimal Nonnegative Solutions for a Class of Nonlinear Matrix Equations. East Asian Journal on Applied Mathematics, (2019)

14. Chacha, S. (2012). Mathematical programming formulations for optimization of university course timetabling problem. University of Dar es Salaam, 1-36.