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The purpose of the proposed thesis is to:1. Define expert systems and discuss various implementation techniques for the components of expert systems. This includes discussion on knowledge representation, inference methods, methods for dealing with uncertainty, and methods of explanation. Specifically, the focus will be on the implementation of rule-based expert systems;2. Apply selected expert system techniques to a case study. The case study will be a rule-based expert system in Prolog to recognize and identify musical chords from tonal harmony. The system will have a general knowledge base containing fundamental rules about chord construction. It will also contain some knowledge that will allow it to deduce non-trivial chords. Furthermore, it will contain procedures to deal with uncertainty and explanation;3. Explain general concepts about music theory and tonal chord classification to put the case study in context; and4. Discuss the limitations of expert systems based on the results of the case study and the current literature. / Department of Computer Science

An expert system has been constructed for the purpose of assisting in the design and analysis of direct gain passive solar environments. This system has been constructed for the use of senior undergraduate architecture students in a computer-based design studio. The primary use of the system is in the role of an educational tool which generates design recommendations from user input and predicts some physical characteristics of the environment.The system is applicable to passive solar environments with vertical, south-facing glazing. The system incorporates three models. The first model represents an attached sunspace with no thermal mass storage. The second model represents a direct gain living space. The third model represents a direct gain living space integrated with thermal mass storage. The third model allows the use of floors, ceilings, and walls as mass for thermal storage. Four representative mass materials (concrete, adobe, common brick, and dense concrete masonry) have been included for comparison purposes. Four representative sub-climates are also incorporated into the system: cold / arid, hot / arid, hot / humid, and cool / humid. For educational purposes, the system makes separate calculations for identical structures based on models for inhabited and uninhabited cases.The system incorporates scientific and mathematical relationships as well as rulesof thumb which have demonstrated their applicability to passive solar design. The system performs calculations based on work by Balcomb, et al. [5, 9], and Duffle and Beckman [1], to estimate environmental temperature swings, total solar energy input, and thermal absorption by mass storage elements. The system also utilizes models based upon work by Mazria [4] to recommend glazing areas. Recommended glazing areas are calculated from user input variables such as structure type, site latitude, and floor area.The system's ease of use allows it to be adapted for various classroom goals, and its generalized nature permits the instructor to adapt it easily into different areas of architectural design curricula. The system is written for use with the CLIPS expert system shell. / Department of Physics and Astronomy

Institutions of higher learning are currently faced with the crisis of finding appropriate criteria for undergraduate admission. This concern has been sparked by the fact that matriculation grades are no longer seen as an accurate reflection of students' academic potential. As tertiary education is becoming more expensive, it is therefore becoming more and more important to select only students who have a realistic chance of being successful in their studies. The main aim of this study is to validate the Situation Specific Evaluation Expert (SPEEX) as a predictor of academic success of first year students of Mechanical Engineering at the Vaal Triangle Technikon. The design used in this study is a non-experimental correlational design. This design was selected because the investigation of this study is aimed at determining the presence or absence of the relationship between the independent and dependent variables without specific reference to causality. The sample of this study consisted of a total of 140 mechanical engineering student at the Vaal Triangle Technikon. This sample was the total number of students from the Mechanical Engineering department who enrolled for mechanical engineering courses for the year 2000. The sample consisted of 94% males and females 6% females. Subject matter experts from industry as well as those involved in the training of Mechanical Engineering at the Vaal Triangle Technikon selected competencies, which were hypothesised to be indicative of a potentially successful student. Based on the selected competencies the assessment battery was compiled with the selected indices being considered as predictor variables. A multiple regression analysis was performed on data in order to establish the predictive validity of the assessment battery. SPEEX 2502 (Language proficiency) consistently showed a positive correlation on the prediction of academic success. / Thesis (MA (Industrial Psychology))--North-West University, Potchefstroom Campus, 2004.

This study explored the question whether forensic social work meets the requirements set by the South African Council for Social Service Professions (SACSSP) for registration as a specialist field. The requirements are as follows: • It should be an identifiable and definable field in social work. • It should not be a form of intervention. • It should include a distinctive field of social work and not be shared with other professions. • It requires specialized knowledge, skills and experience from the social worker. It has been concluded that forensic social work does indeed meet the requirements for registration and it is recommended that it be registered as such. / Thesis (M.A. (MW Forensic))--North-West University, Potchefstroom Campus, 2009.