All Outputs (467)

Large-scale ontology storage and query using graph database-oriented approach: The case of Freebase (2016)
Presentation / Conference Contribution

Ontology has been increasingly recognised as an instrumental artifact to help make sense of large amounts of data. However, the challenges of Big Data significantly overburden the process of ontology storage and query particularly. In this respect, t... Read More about Large-scale ontology storage and query using graph database-oriented approach: The case of Freebase.

Hot and cold data classification for main memory databases (2015)
Presentation / Conference Contribution

Query execution for RDF data on row and column store (2015)
Presentation / Conference Contribution

This paper shows experimental comparison between various data storage techniques to manage RDF data. The work represents evaluation of query performance in terms of query execution time and data scalability, using row and column store for various dat... Read More about Query execution for RDF data on row and column store.

Green computing emerging trends (2015)
Presentation / Conference Contribution

Green computing, or sustainable computing, focuses on reducing the environmental impact of information technology through energy-efficient design, responsible manufacturing, and sustainable disposal practices. Emerging trends in this field include AI... Read More about Green computing emerging trends.

Query execution for rdf data using structure indexed vertical partitioning (2015)
Presentation / Conference Contribution

The paper explores use of various partitioning methods to store RDF data effectively, to meet the needs of extensively growing highly interactive semantic web applications. It proposes a combinational approach of structure index partitioning and vert... Read More about Query execution for rdf data using structure indexed vertical partitioning.

Data management for Internet of Things (2015)
Presentation / Conference Contribution

Internet of Things is projected to connect uniquely identifiable devices over the network to build an interactive system with high velocity and volume of data placing forth a challenge of interoperability between such devices. RDF provides a common s... Read More about Data management for Internet of Things.

Secure and privacy-aware traffic information as a service in VANET-based clouds (2015)
Journal Article

The multitude of applications and services in Vehicular Ad hoc NETwork (VANET) and cloud computing technology that are dreamed of in the near future, are visible today. VANET applications are set to explode in the next couple of years as a result of... Read More about Secure and privacy-aware traffic information as a service in VANET-based clouds.

Energy optimization in commercial FPGAs with voltage, frequency and logic scaling (2015)
Journal Article

This paper investigates the energy reductions possible in commercially available FPGAs configured to support voltage, frequency and logic scalability combined with power gating. Voltage and frequency scaling is based on in-situ detectors that allow t... Read More about Energy optimization in commercial FPGAs with voltage, frequency and logic scaling.

Growth, change and decay: Plants and interaction possibilities (2015)
Presentation / Conference Contribution

Our work explores using plants as an interaction material to extend and disrupt existing notions of HCI. We focus in particular on how the affordances and properties of plants can be utilised for enhanced physical and emotional interaction between pe... Read More about Growth, change and decay: Plants and interaction possibilities.

Personal health record sharing in cloud using additive homomorphic encryption via secure alternate viable algorithm (2015)
Presentation / Conference Contribution

Personal health record (PHR) is an emerging patient-centric model of health information exchange, which is often outsourced to be stored at a third party, such as cloud providers. However, there have been wide privacy concerns as personal health info... Read More about Personal health record sharing in cloud using additive homomorphic encryption via secure alternate viable algorithm.

Data partitioning for semantic web (2014)
Journal Article

Semantic web database is an RDF database. Tremendous increase can be seen in semantic web data, as real life applications of semantic web are using this data. Efficient management of this data at a larger scale, and efficient query performance are th... Read More about Data partitioning for semantic web.

Enterprise resource planning (ERP) systems - Is Botswana winning? A question on culture effects (2014)
Journal Article

As the economy of the country is improving, organisations across Botswana are increasing their investments in Enterprise Resource Planning (ERP) technology as a way of helping in the growth of their business. Some institutions that have implemented E... Read More about Enterprise resource planning (ERP) systems - Is Botswana winning? A question on culture effects.

On the prime graph of simple groups (2014)
Journal Article

Let G be a finite group, let π(G) be the set of prime divisors of jGj and let Γ(G) be the prime graph of G. This graph has vertex set π(G), and two vertices r and s are adjacent if and only if G contains an element of order rs. Many properties of the... Read More about On the prime graph of simple groups.

On boundedly generated subgroups of profinite groups (2014)
Journal Article

In this paper we investigate the following general problem. Let G be a group and let i(G) be a property of G. Is there an integer d such that G contains a d-generated subgroup H with i(H) = i(G)? Here we consider the case where G is a profinite group... Read More about On boundedly generated subgroups of profinite groups.

Using adult learning principles as a framework for learning ICT skills needed for research projects (2013)
Journal Article

Executive Summary Students in higher institutions need to carry out research projects. The focus of this paper explores a model to help students learn ICT skills needed for research projects. Generally students go through the 'long and hard route' to... Read More about Using adult learning principles as a framework for learning ICT skills needed for research projects.

Faster query execution for partitioned RDF data (2013)
Presentation / Conference Contribution

This work demonstrates use of Materialized Views to enhance query performance for partitioned RDF data. Given a query, our system determines which views or combinations thereof can be used to answer it. Break- even analysis for the proposed system ha... Read More about Faster query execution for partitioned RDF data.

Fuzzy-based framework for enterprise resource planning system selection (2013)
Presentation / Conference Contribution

The popularity of enterprise resource planning is globally increasing for being the magical word to integrate and automate all areas of business operations. However, many organizations are still having hard times to select the proper ERP package. Sel... Read More about Fuzzy-based framework for enterprise resource planning system selection.

Semantic web data partitioning (2012)
Book Chapter

I am a painter (2011)
Other

I Am A Painter, its title taken from Paul Klee’s quote about the joy of colour, is an aleatoric film of endless duration in which the images and sound are composed according to a simple set of rules. It is a piece about colour and sound, that grew fr... Read More about I am a painter.

Do students have the relevant ICT skills they need to do their research projects? (2011)
Presentation / Conference Contribution

The final year research project is the capstone of undergraduate studies. Finding out the skills students have at final year helps determine how ready they are for their research projects as well as how prepared they are for the job market. In order... Read More about Do students have the relevant ICT skills they need to do their research projects?.