Yegnanew A. Shiferaw is a senior lecturer and mathematical statistician in the Department of Statistics at the University of Johannesburg (UJ). Before joining UJ, he was a researcher and lecturer at Hawassa University in Ethiopia. He has developed and applied statistical methodologies to estimate poverty, food insecurity, and other variables. In addition to lecturing and supervising, he has presented his research at national and international conferences. In 2016, the University of the Witwatersrand awarded him a Ph.D. in mathematical statistics. The author's work includes a few corollaries, four new theorems, and more. He is currently looking into (i) small-area estimates of school-age children living in poverty, the mortality rate for children under the age of five, the rates of food insecurity and malnutrition, the gender gap in the digital world, and unemployment rates, among other things, (ii) analysis of time series: forecasting soil moisture, modelling volatility, modelling correlation dynamics, etc.; (iii) environmental studies, and the use of Markov switching models to examine the relationship between NDVI and climate variables and groundwater depth; (iv) public health: determinants of contraceptive use among married women of reproductive age in Somaliland, risk factors for glaucoma patients in Ethiopia using Bayesian linear mixed models, and so on.
