Solar irradiance forecasting is essential in renewable energy grids amongst others for back-up programming, operational planning, and short-term power purchases. This research study focuses on forecasting hourly solar ...
The age distribution of a population is one of the most important demographic factors that plays a major role in describing and making projections about the population. Age distribution determine life expectancy, fertility ...
The study focuses on the application of hierarchical time series in forecasting electricity demand using South African data. The methods used are top-down, bottom-up and optimal combination. The top-down method is based ...
Short-term load forecasting in South Africa using machine learning and statistical models is discussed in this study. The research is focused on carrying out a comparative analysis in forecasting hourly electricity demand. ...
Wind offers an environmentally sustainable energy resource that has seen increasing global adoption in recent years. However, its intermittent, unstable and stochastic nature hampers its representation among other renewable ...
Selection of variables is vital in high dimensional statistical modelling as it aims to identify the right subset model. However, variable selection for discrete survival analysis poses many challenges due to a complicated ...
The baseline parameter vector in a discrete-time survival model is determined by the number of
time points. The larger the number of the time points, the higher the dimension of the baseline
parameter vector which often ...
The ripple e ect of a stock market crash due to extremal dependence is a global issue
with key attention and it is at the core of all modelling e orts in risk management.
Two methods of extreme value theory (EVT) were ...
This study discusses an application of partially linear additive quantile regression
models in predicting medium-term global solar irradiance using data
from Tellerie radiometric station in South Africa for the period ...
This study explores the use of
exible link functions in discrete survival models
through a simulation study and an application to the Swaziland Demographic and
Health Survey (SDHS) data. The objective of the research ...
Foreign direct investment plays an important role in the economic growth
process in the host country, since foreign direct investment is considered as
a vehicle transferring new ideas, capital, superior technology and ...
Daily peak electricity data from ESKOM, South African power utility company for the period, January
1997 to December 2013 consisting of 6209 observations were used in this dissertation. Since 1994, the
increased electricity ...
Generally, short term load forecasting is essential for any power generating
utility. In this dissertation the main objective was to develop short term
load forecasting models for the peak demand periods (i.e. from 18:00 ...
Forecasting of electricity peak demand levels is important for decision makers
in Eskom. The overall objective of this study was to develop medium
term load forecasting models which will help decision makers in Eskom ...
There has been a growing interest in investment opportunities in Africa. The net foreign direct
investment (FDI) to Sub-Saharan Africa has increased from $13 billion in 2004 to about $54 billion
in 2015. Investing on the ...
Over the years researchers have been modeling inflation rate in Ghana using linear models such as
Autoregressive Integrated Moving Average (ARIMA), Autoregressive Moving Average (ARMA) and
Moving Average (MA). Empirical ...
Haulage trucks and cross border traders cross through Beitbridge border post from
landlocked countries such as Zimbabwe and Zambia for the sake of trading. Because of
global warming, South Africa has lately been experiencing ...