Browsing Statistics by Issue Date
Now showing items 1-20 of 119
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A study of student academic performance at the University of Natal.
(1994)In this dissertation a study will be made of university performance in the Science Faculty of the University of Natal, Durban. In particular, we will develop models that can be used to predict the success rate of a student ... -
Forecasting the monthly electricity consumption of municipalities in KwaZulu-Natal.
(1997)Eskom is the major electricity supplier in South Africa and medium term forecasting within the company is a critical activity to ensure that enough electricity is generated to support the country's growth, that the networks ... -
Aspects of categorical data analysis.
(1998)The purpose of this study is to investigate and understand data which are grouped into categories. At the onset, the study presents a review of early research contributions and controversies surrounding categorical data ... -
The statistical analyses of a complex survey of banana pests and diseases in Uganda.
(1999)No abstract available. -
Nonlinear models for neural networks.
(2000)The most commonly used applications of hidden-layer feed forward neural networks are to fit curves to regression data or to provide a surface from which a classification rule can be found. From a statistical viewpoint, the ... -
Spatial analysis and efficiency of systematic designs in intercropping experiments.
(2002)In studies involving intercropping plant populations, the main interest is to locate the position of the maximum response or to study the response pattern. Such studies normally require many plant population levels. Thus, ... -
Analysis of time-to-event data including frailty modeling.
(2006)There are several methods of analysing time-to-event data. These include nonparametric approaches such as Kaplan-Meier estimation and parametric approaches such as regression modeling. Parametric regression modeling ... -
Longitudinal survey data analysis.
(2006)To investigate the effect of environmental pollution on the health of children in the Durban South Industrial Basin (DSIB) due to its proximity to industrial activities, 233 children from five primary schools were considered. ... -
Factors affecting the health status of the people of Lesotho.
(2007)Lesotho, like any other country of the world, is faced with the task of improving the -
Inference from finite population sampling : a unified approach.
(2007)In this thesis, we have considered the inference aspects of sampling from a finite population. There are significant differences between traditional statistical inference and finite population sampling inference. In the ... -
Analysis of longitudinal binary data : an application to a disease process.
(2008)The analysis of longitudinal binary data can be undertaken using any of the three families of models namely, marginal, random effects and conditional models. Each family of models has its own respective merits and demerits. ... -
Applications of Levy processes in finance.
(2009)The option pricing theory set forth by Black and Scholes assumes that the underlying asset can be modeled by Geometric Brownian motion, with the Brownian motion being the driving force of uncertainty. Recent empirical studies, ... -
Time series modelling with application to South African inflation data
(2009)The research is based on financial time series modelling with special application -
Modelling CD4+ count over time in HIV positive patients initiated on HAART in South Africa using linear mixed models.
(2009)HIV is among the highly infectious and pathogenic diseases with a high mortality rate. The spread of HIV is in uenced by several individual based epidemiological factors such as age, gender, mobility, sexual partner pro ... -
Estimating risk determinants of HIV and TB in South Africa.
(2009)Where HIV/AIDS has had its greatest adverse impact is on TB. People with TB that are infected with HIV are at increased risk of dying from TB than HIV. TB is the leading cause of death in HIV individuals in South Africa. ... -
Modelling acute HIV infection using longitudinally measured biomarker data including informative drop-out.
(2009)Background. Numerous methods have been developed to model longitudinal data. In HIV/AIDS studies, HIV markers, CD4+ count and viral load are measured over time. Informative drop-out and the lower detection limit of viral ... -
Modeling environmental factors affecting the growth of eucalypt clones.
(2009)Tree growth is influenced by environment and genetic factors. The same tree growing in different areas will have different growth patterns. Trees with different genetic material, e.g. pine and Eucalyptus trees, growing ... -
Stochastic volatility effects on defaultable bonds.
(2009)We study the eff ects of stochastic volatility of defaultable bonds using the first -passage structural approach. In this approach Black and Cox (1976) argued that default can happen at any time. This then led to the ... -
D-optimal designs for drug synergy.
(2009)This thesis is focused on the construction of optimal designs for detecting drug interaction using the two-variable binary logistic model. Two specific models are considered: (1) the binary two-variable logistic model ...