Browsing Philosophiae Doctor - PhD (Computer Science) by Issue Date
Now showing items 1-20 of 26
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Synergistic use of promoter prediction algorithms: a choice of small training dataset?
(University of the Western Cape, 2000)Promoter detection, especially in prokaryotes, has always been an uphill task and may remain so, because of the many varieties of sigma factors employed by various organisms in transcription. The situation is made more ... -
Synergistic use of promoter prediction algorithms: A choice for small training dataset?
(University of the Western Cape, 2000)This chapter outlines basic gene structure and how gene structure is related to promoter structure in both prokaryotes and eukaryotes and their transcription machinery. An in-depth discussion is given on variations types ... -
Digital watermarking methods for data security and authentication
(University of the Western Cape, 2008)Throughout history people have tried to develop methods to secure the exchange of information. Due to the influence of the information technology revolution, protecting data of different types has become as essential ... -
An intelligent vertical handoff decision algorithm in next generation wireless networks
(2010)Seamless mobility is the missing ingredient needed to address the inefficient communication problems faced by the field workforces of service companies that are using field workforce automation solutions to streamline and ... -
A technique for the evaluation of free and open source e-learning systems
(University of the Western Cape, 2010)Evaluating software is a universal and complex problem. The question is: how should software be selected and adopted, or rather, which of the software packages is the most suitable for a specific environment? Extensive ... -
An intelligent vertical handoff decision algorithm in next generation wireless networks
(University of the Western Cape, 2010)The objective of the thesis research is to design such vertical handoff decision algorithms in order for mobile field workers and other mobile users equipped with contemporary multimode mobile devices to communicate ... -
Recognition of facial action units from video streams with recurrent neural networks : a new paradigm for facial expression recognition
(University of the Western Cape, 2011)This research investigated the application of recurrent neural networks (RNNs) for recognition of facial expressions based on facial action coding system (FACS). Support vector machines (SVMs) were used to validate the ... -
Short message service normalization for communication with a health information system
(2011)Short Message Service (SMS) is one of the most popularly used services for communication between mobile phone users. In recent times it has also been proposed as a means for information access. However, there are several ... -
Towards ensuring scalability, interoperability and efficient access control in a triple-domain grid-based environment
(2012)The high rate of grid computing adoption, both in academe and industry, has posed challenges regarding efficient access control, interoperability and scalability. Although several methods have been proposed to address ... -
Processing hidden Markov models using recurrent neural networks for biological applications
(University of the Western Cape, 2013)In this thesis, we present a novel hybrid architecture by combining the most popular sequence recognition models such as Recurrent Neural Networks (RNNs) and Hidden Markov Models (HMMs). Though sequence recognition problems ... -
Towards a unified modelling framework for adaptive networks.
(University of the Western Cape, 2014)Adaptive networks are complex networks with nontrivial topological features and connection patterns between their elements which are neither purely regular nor purely random. Their applications are in sociology, biology, ... -
Context-awareness for adaptive information retrieval systems
(University of the Western Cape, 2014)This research study investigates optimization of IRS to individual information needs in order of relevance. The research addressed development of algorithms that optimize the ranking of documents retrieved from IRS. In ... -
Independent hand-tracking from a single two-dimensional view and its application to South African sign language recognition
(University of Western Cape, 2014)Hand motion provides a natural way of interaction that allows humans to interact not only with the environment, but also with each other. The effectiveness and accuracy of hand-tracking is fundamental to the recognition ... -
Energy optimization for wireless sensor networks using hierarchical routing techniques
(University of the Western Cape, 2015)Wireless sensor networks (WSNs) have become a popular research area that is widely gaining the attraction from both the research and the practitioner communities due to their wide area of applications. These applications ... -
Energy Optimization for Wireless Sensor Networks using Hierarchical Routing Techniques
(University of the Western Cape, 2015)Wireless sensor networks (WSNs) have become a popular research area that is widely gaining the attraction from both the research and the practitioner communities due to their wide area of applications. These applications ... -
The strategic role of software development within the software industry of the Western Cape (South Africa)
(University of the Western Cape, 2016)Africa’s mobile phone penetration has surpassed that of the United States of America and information communication technologies, according to the World Bank, contribute more to its gross domestic product than the global ... -
The availability, applicability and utility of information systems engineering standards in South African higher education
(University of the Western Cape, 2016)Higher education institutions in South Africa have invested heavily in information technology and information systems, with variable outcomes. Organisations in other sectors, such as engineering, the defence industry, ... -
White Space Network Management: Spectrum Quanti cation, Spectrum Allocation and Network Design
(University of the Western Cape, 2017)The unused spectrum in the television broadcasting frequency bands (so-called TV white spaces) can alleviate the spectrum crunch, and have potential to provide broadband connection to rural areas of countries in the ... -
Quality of service in cloud computing: Data model; resource allocation; and data availability and security
(University of the Western Cape, 2019)Recently, massive migration of enterprise applications to the cloud has been recorded in the Information Technology (IT) world. The number of cloud providers offering their services and the number of cloud customers ... -
Cooperative data muling using a team of unmanned aerial vehicles
(University of the Western Cape, 2019)Unmanned Aerial Vehicles (UAVs) have recently o ered signi cant technological achievements. The advancement in related applications predicts an extended need for automated data muling by UAVs, to explore high risk places, ...
