Karen Bradshaw

Learn More
JAMI (Java-based Agglutination of Medical Information) is designed as a framework for integrating heterogeneous information systems used in healthcare related institutions. It is one of the implementations under the W3-EMRS project 1 aimed at using the World Wide Web (Web) to unify different hospital information systems. JAMI inherited several design(More)
The lack of multi-biometric fusion guidelines at the feature-level are addressed in this work. A feature-fusion framework is geared toward improving human identification accuracy for both single and multiple biometrics. The foundation of the framework is the improvement over a state-of-the-art uni-modal biometric verification system, which is extended into(More)
It is commonplace for students to enter university with skills deficiencies. However, this is cause for growing concern in the context of South Africa, as these `deficient' students are becoming more numerous. Public secondary schools in South Africa are failing to create students with adequate skills for careers in the STEM fields. This paper isolates(More)
Framing environmental problems as catastrophic likely undercuts public support for sound environmental policies over time. This article reviews three historic examples of influential books predicting environmental catastrophes. Although the authors brought public attention to real and important problems, the embellished claims that failed to materialize(More)
The feature-level, unlike the match score-level, lacks multi-modal fusion guidelines. This work demonstrates a practical approach for improved image-based biometric feature-fusion. The approach extracts and combines the face, fingerprint and palmprint at the feature-level for improved human identification accuracy. Feature-fusion guidelines, proposed in(More)
The traditional texture-based fingerprint recognition system known as FingerCode is improved in this work. Texture-based fingerprint recognition methods are generally more accurate than other methods, but at the disadvantage of increased storage requirements. The low storage requirements for a low resolution texture-based fingerprint recognition method(More)
Modelling tools are widely used by national parks, both within South Africa and in countries around the world. The modelling of animal behaviour, particularly in South Africa and other African countries, is well established. These models, however, tend to be developed with one particular application and species in mind and are not reusable in other(More)
Recent high profile court trials around the world, including South Africa, have highlighted the importance of forensic science evidence in court. They have also show what can happen when forensic science is handled poorly in court leading to incorrect convictions or acquittals. Most often the problems have been linked to the qualifications, training,(More)