Areas of Expertise

• • Mathematics
• • Statistics
• • Operations Research
• • Mathematics Education
• • Statistical Consultancy

Academic Qualifications

• • PhD Mathematical Statistics
  Thesis: Optimal Portfolio Selection with Uncertain Implicit Transaction Costs in a Dynamic Stochastic Framework.
• • MSc Operations Research
  Dissertation: An Analysis of the Relative Performances (Efficiencies) by Applying Weight Restrictions in Data Envelopment Analysis in the Administrative Districts of the Harare City Council.
• • BSc Hons Mathematics
  Dissertation: Periodical Solutions of Non-Autonomous Systems.
• • BEd Mathematics
  Research Project: The Effects and Influence of Attitudes and Beliefs Towards Mathematics Teaching and Learning at Ordinary Level, Charter District, Zimbabwe.
• • Certificate in Education

Postgraduate Supervision

Master's Students

• • Nomvo Raqa — First registered: 2020
  An Investigation into Grade 3 Learners' Levels of Mathematics Competence in Dr Kenneth Kaunda Education District.
• • Sennga Naggie Sibiya — First registered: 2020
  An Investigation into Predictors of Grade 8 Learners' Mathematics Performance in Ngaka Nodiri Molema Education District.

Selected Publications

• • Mushori, S. & Chikobvu, D. (2018). Investment Opportunities, Uncertain Implicit Transaction Costs and Maximum Downside Risk in Dynamic Stochastic Financial Optimization. International Journal of Economic and Financial Issues, 8(4), 256-264.
• • Mushori, S. & Chikobvu, D. (2017). Optimal Portfolio Selection with Stochastic Maximum Downside Risk and Uncertain Implicit Transaction Costs. Journal of Economic and Financial Sciences, 10(3), 411-423.
• • Mushori, S. & Chikobvu, D. (2016). Stochastic Mean Absolute Deviation Model with Random Transaction Costs: Securities from the Johannesburg Stock Market. International Journal of Operational Research, 26(2), 127-152.
• • Mushori, S. & Chikobvu, D. (2016). A Stochastic Multi-Stage Trading Cost Model in Optimal Portfolio Selection. Journal of Economics and Econometrics, 59(3), 32-66.

Books and Book Chapters

• • Mushori, S. & Chikobvu, D. (2020). Investigating the Investment Opportunities, Uncertain Implicit Transaction Costs and Maximum Downside Risk in Dynamic Stochastic Financial Optimization. Current Strategies in Economics and Management, Vol. 7, pp. 132-147.

Conference Proceedings & Presentations

• • An Empirical Estimation of Implicit Transaction Costs in Stochastic MAD Efficient Portfolios at the Johannesburg Stock Market. International Conference on Computational and Mathematical Methods in Science and Engineering, Vaal University of Technology, 25-27 September 2013.
• • Stochastic Portfolio Optimization in Financial Decision Making with Utility Functions and Continuous-Time Mean-Variance. Eastern Cape Postgraduate Conference, Nelson Mandela Metropolitan University, 20-23 September 2011.
• • Simultaneous Inequalities: An Overlooked Mathematical Concept (Application of Data Envelopment Analysis). Walter Sisulu University International Conference, 18-20 August 2010.

Internationalisation Activities

• • Editorial Board Member, SCIREA Journal of Mathematics (September 2018-present).
• • Reviewer Board Member, London Journals Press (July 2019-present).
• • Reviewer Council Member, Global Journals Inc., USA (July 2019-present).
• • Invited to serve as Lead Guest Editor of the American Journal of Operations Management and Information Systems for a special issue.
• • Reviewer Board Member, International Journal of Financial Research, Sciedu Press, Ontario, Canada (May 2020-present).
• • Member of the Internationalisation iKUDU COIL Project team, involving partner universities in South Africa and Europe.

Community Engagement

• • Taught Mathematics as part of the Delmas-Central University of Technology in-service teacher training programme in Delmas, Mpumalanga, in 2014.
• • Evaluated high school learners' work at the Eskom Expo for Young Scientists in the Welkom region in 2016 and 2017.
• • Presented to high school learners during the Education District Science Week in Kroonstad in 2016.
• • Participated in numerous Lejweleputswa Education Department workshops for teachers and departmental meetings.
• • Team member in the Free State Online Teacher/Learner Technical Mathematics Improvement Programme.
• • Team member in a survey investigating causes of poor mathematics performance in the Free State Province.

External Profiles