Thesis (M. Tech. (Engineering Electrical)) -- Central University of Technology, Free State, [2014] / This dissertation evaluates the software and hardware components used to develop a Reconfigurable Assembly System with an Integrated Information Management System. The assembly system consists of a modular Cartesian robot and vision system. The research focuses on the reconfigurability, modularity, scalability and flexibility that can be achieved in terms of the software and hardware components used within the system. The assembly system can be divided into high-level control and low-level control components. All information related to the product, Cartesian positioning and processes to follow resides in the Information Management System. The Information Management System is the high-level component and consists of a database, web services and low-levelcontrol drivers. The high-level system responds to the data received from the low-level systems and determines the next process to take place. The low-level systems consist of the PLC (Programmable Logic Controller) and the vision system. The PLC controls the Cartesian robot’s motor controllers and handles all events raised by field devices (e g. sensors or push buttons). The vision system contains a number of pre-loaded inspections used to identify barcodes and parts, obtain positioning data and verify the products’ build quality. The Cartesian robot’s positioning data and the vision system’s inspections are controlled by the Information Management System. The results showed that the high-level control software components are able to add more modularity and reconfigurability to the system, as it can easily adapt to changes in the product. The high-level control components also have the ability to be reconfigured while the assembly system is online without affecting the assembly system. The low-level control system is better suited to handling the control of motor controllers, field devices and vision inspections over an industrial network.

Thesis (M. Tech.) - Central University of Technology, Free State, 2010 / The main aim of this research was to automate student attendance registration, thereby reducing human involvement in the whole process. This was made possible using Radio Frequency Identification (RFID) technology. The Central University of Technology uses student cards that are compatible for use with RFID technology. As a result, no initial investment (except for the existing personal computer’s and the constructed RFID reader) in infrastructure was required for this project. The basic working of the project was as follows. The students belonging to a specific class had their vital educational data (Student number, Name) entered into a database table at the time of registration. A student card containing a serial number, with reference to the data contained in the database table, was given to the students after registration. The students walk into their respective classes and scan their student cards with the RFID reader. The serial number stored in the student card is transferred to the reader and from there wirelessly to the main server using ZigBee technology. In the main server, using Java programming language, the card serial number is sent to the Integrated Development Environment (IDE). In this project the Netbeans IDE (Java platform) was used. The Netbeans IDE is connected to the Apache Derby database using Java Database Connector (JDBC), so the serial number (which is referenced to the educational data of the students) from the student card is automatically compared with the original database created at the time of registration. Once a match is confirmed between the two entries, the data is entered into a separate database table which serves as the basic attendance sheet for a specific day.

Thesis (D. Tech. (Business Administration )) - Central University of Technology, Free State / The purpose of this study was to determine the extent to which certain selected factors serve as drivers of innovation in small accommodation businesses (SABs) in two developing economies in Southern Africa namely South Africa and Zimbabwe with the ultimate aim of assisting policy makers and support agencies in formulating innovation oriented strategies for the sector. Two samples were randomly selected from SABs in Zimbabwe and South Africa- two neighbouring Southern African countries. Parametric tests which include t-tests and one-way ANOVAs as well as Bonferonni tests as post-hoc measures were used to test whether SAB propensity to engage in different dimensions of innovation differs by gender; firm size, owner-managers’ years of experience and level of education respectively. Pearson Product Moment Correlations were employed to assess the relationships between market orientation, learning orientation and innovation while Chi-square tests were performed to establish the inter-relationships between independent demographic variables, namely age, gender, education and work experience. In order to investigate whether there are any significant interaction effects between the age of the respondents and their experience in the accommodation sector on each of the five innovation measures, a series of two-way ANOVA tests were performed. Lastly, regression analysis was used to determine the relative efficacy of market orientation (MO), learning orientation (LO) and country in predicting innovation in a business. The results demonstrate that unlike firm size, gender and level of education, which have no association with innovation, there is a strong association between market orientation, learning orientation, owner/managers age and experience and innovation in the two countries. This positive association implies that SABs that are committed to, listen attentively to and learn proactively about their customers’ needs and expectations are better inclined to engage in all the different dimensions of innovation (product/service, process, marketing and organisational) than their counterparts who do not engage in these activities. Among other drivers of innovation, market orientation emerged as the main predictor implying that SABs that invest more in marketing tend to be better innovators than those that invest in learning irrespective of their country of operation. The study also revealed that younger owner/managers of SABs tend to be more innovative than their older, experienced counterparts. The study makes an important contribution to literature on the drivers of innovation in small accommodation businesses in developing economies by dispelling firm size, gender and level of education which were regarded as drivers of innovation across industries previously. Practice and policy wise, the study led to the development of a conceptual framework for investigating how best to drive innovation in local SABs in order to make them more competitive, survive and grow in the face of competition from large accommodation businesses that often happen to be multinational.

Thesis (M. Tech.) -- Central University of Technology, Free State, 2010

Thesis (M. Tech.) -- Central University of Technology, Free State, 2009 / Automated Guided Vehicles (AGVs) have many different design specifications, although they all have certain design features in common, for instance they are designed to follow predetermined paths, and they need to be aware of their surroundings and changes to their surroundings. They are designed to house sensors for navigation and obstacle avoidance. In this study an AGV platform was developed by modifying an electric wheelchair. A serial port interface was developed between a computer and the control unit of the electric wheelchair, which enables the computer to control the movements of the platform. Different sensors were investigated to determine which would be best suited and most effective to avoid collisions. The sensors chosen were mounted on the AGV and a programme was developed to enable the sensors to assist in avoiding obstacles. An imaging device as an additional sensor system for the AGV was investigated. The image produced by a camera and dome mirror was processed into a panoramic image representing an entire 360o view of the AGV‟s surroundings. The reason for this part of the research was to enable the user to make corrections to the AGV‟s path if it became stuck along the track it was following. The entire system was also made completely wireless to improve the flexibility of the AGV‟s applications.

Thesis (M. Tech.) -- Central University of Technology, Free State, 2008 / As the tendency to use sol id freeform fabrication (SFF) technology for the manufacture of end use parts grew, so too did the need for a set of general guidelines that would aid designers with designs aimed specifically for rapid manufacture. Unfortunately, the revolutionary additive nature of SFF technology left certain fundamental principles of conventional design for manufacture and assembly outdated. This implied that whole chapters of theoretical work that had previously been done in this field had to be revised before it could be applied to rapid manufacturing. Furthermore, this additive nature of SFF technology seeded a series of new possibilities and new advantages that could be exploited in the manufacturing domain, and as a result drove design for rapid manufacturing principles even further apart from conventional design for manufacture and assembly philosophy. In this study the impact that rapid manufacture had on the conventional product development process and conventional design for manufacture and assembly guidelines were investigated. This investigation brought to light the inherent strengths and weaknesses of SFF, as well as the design for manufacture and assembly guidelines that became invalid, and consequently lead directly to the characterization of a set of design for rapid manufacture guidelines.

Thesis (B. Tech.) - Central University of Technology, Free State, 2007

Thesis (M. Tech.) - Central University of Technology, Free State, 2009

Thesis (D. Tech.) -- Central University of Technology, Free State, 2007 / Success in today’s competitive business environment demands innovative approaches. Organisations must be able to react effectively and make informed decisions in order to be in the best position to take advantage of collaborated business opportunities in the organisation’s external network. The results of strategic decisions are affected by the strategic choices that are made and how successfully those objectives are implemented. In many cases the strategies have mediocre success or fail to achieve what they set out to do due to the failure to formulate and implement strategies that enhance the development of a sustainable competitive advantage in the long term. The case study organisation, MultiChoice Africa (Pty) Limited, serves as an example in understanding the knowledge base imperative in utilising strategic management instruments such as Kaplan and Norton’s (1996a: 8-18, 224-292) Balanced Scorecard to guide leadership in creating real-time value, thereby creating a sustainable competitive advantage. Balanced Scorecards have largely been developed and applied to internal managerial purposes, though they are seldom used for external marketing. The purpose of this research was to evaluate the strategic value of the Balanced Scorecard in the networked economy, utilising a case study design by following a phenomenological paradigm approach. The outcome was based on a pre- and postanalysis of the implementation of the Balanced Scorecard within the case study organisation, focusing on the perceived value towards overcoming the barriers to strategy implementation, developing a competitive advantage and sustaining this advantage. Sustainability was specifically defined and tested against the environment and ethical behaviour as the results indicated that a link exists between sustainable competitive advantage and the appropriate utilisation of the Balanced Scorecard. Research results suggest that respondents appear to be enthusiastic and have started the process of transforming the organisation into a ‘Balanced Scorecard organisation’. The main advantages included an increased awareness of vision, linking operational tasks to strategic employees’ participation and flexibility. Shortcomings, on the other hand, included the perceived lack of contribution of the Balanced Scorecard to the final outcome as well as to the transformation process. A number of limitations were evident in the design, deployment and utilisation of the Balanced Scorecard in overcoming the barriers to strategy implementation and how to gain a sustainable competitive advantage in the networked economy. Important aspects surrounding employees and stakeholders were also highlighted as the design of the case study organisation’s original Balanced Scorecard is based on its value chain. However, due to the networked economy and its implications for the organisation, the Balanced Scorecard architecture should be modified to make provision for a networked design. These modifications should incorporate additional constructs that need to be taken into consideration when creating larger networks and establishing collaborative communities of practice. Key to the organisation’s future strategic value and intent is the successful implementation of change management (transformation) as a driver into the application of the Balanced Scorecard in the networked economy. Insight gained was used to propose a theoretical model based on global business landscape demands, utilising new and innovative strategies and business model architectures that require the convergence of aggregated metrics of all role players in the borderless network, as outlined in the ‘Networked Balanced Scorecard’ theoretical model. The theoretical model outlines how organisations can reform and integrate their Balanced Scorecards to support strategy formulation, implementation and control. It therefore supports sustainable competitive advantage and is based on embracing components of competitive intelligence and collaboration in the networked economy. It is thus suggested that organisations can no longer implement sustainable competitive advantage strategies in isolation, but need to focus on organisational development strategies that encapsulate the network concomitance structure and architecture, thereby attaining the new value proposition for strategic intent.

Thesis (M.Tech.) - Central University of Technology, Free State, 2006