A critical discourse analysis of Nelson Mandela University’s Facebook page: a case of transformational communication
- Authors: Ndayi, Viwe
- Date: 2018
- Subjects: Facebook (Electronic resource) , Online social networks Internet marketing Communication in management Nelson Mandela University Metropolitan University -- Communication
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/32815 , vital:32366
- Description: The South African Department of Higher Education and Training (DHET) calls for all Higher Education Institutions (HEIs) to develop, execute and establish strategies for achieving transformed racial truths - inside and outside the classroom. In HEIs, the social media platform, and most particularly, Facebook, is increasingly being used as a platform to critically and rigorously engage students and universities. The study presents Facebook as a social media platform that can contribute towards the transformation agenda. To illustrate this, the Nelson Mandela University was used as a single case study. Using a qualitative research approach, Critical Discourse Analysis (CDA) was used to analyse the Facebook posts that were shared by the university in 2015. This was done in consideration of the national Higher Education transformation themes, the university’s Vision 2020 strategic goals, as well as the university’s values. It was found that the institution partially uses the platform to address transformation. In addition to this, it was found that race representation for posts relating to excellence, student recruitment and protests reinforce race-based stereotypes. To address the gaps, the study recommends that the university includes posts that enhance engagement, race literacy, and race representation. The study contributes to the developing literature on the use of social media towards race transformation in South African HEIs.
- Full Text:
- Date Issued: 2018
- Authors: Ndayi, Viwe
- Date: 2018
- Subjects: Facebook (Electronic resource) , Online social networks Internet marketing Communication in management Nelson Mandela University Metropolitan University -- Communication
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/32815 , vital:32366
- Description: The South African Department of Higher Education and Training (DHET) calls for all Higher Education Institutions (HEIs) to develop, execute and establish strategies for achieving transformed racial truths - inside and outside the classroom. In HEIs, the social media platform, and most particularly, Facebook, is increasingly being used as a platform to critically and rigorously engage students and universities. The study presents Facebook as a social media platform that can contribute towards the transformation agenda. To illustrate this, the Nelson Mandela University was used as a single case study. Using a qualitative research approach, Critical Discourse Analysis (CDA) was used to analyse the Facebook posts that were shared by the university in 2015. This was done in consideration of the national Higher Education transformation themes, the university’s Vision 2020 strategic goals, as well as the university’s values. It was found that the institution partially uses the platform to address transformation. In addition to this, it was found that race representation for posts relating to excellence, student recruitment and protests reinforce race-based stereotypes. To address the gaps, the study recommends that the university includes posts that enhance engagement, race literacy, and race representation. The study contributes to the developing literature on the use of social media towards race transformation in South African HEIs.
- Full Text:
- Date Issued: 2018
The development and evaluation of gaze selection techniques
- Authors: Van Tonder, Martin Stephen
- Date: 2009
- Subjects: Human-computer interaction , User interfaces (Computer systems) , Gaze
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:10469 , http://hdl.handle.net/10948/882 , Human-computer interaction , User interfaces (Computer systems) , Gaze
- Description: Eye gaze interaction enables users to interact with computers using their eyes. A wide variety of eye gaze interaction techniques have been developed to support this type of interaction. Gaze selection techniques, a class of eye gaze interaction techniques which support target selection, are the subject of this research. Researchers developing these techniques face a number of challenges. The most significant challenge is the limited accuracy of eye tracking equipment (due to the properties of the human eye). The design of gaze selection techniques is dominated by this constraint. Despite decades of research, existing techniques are still significantly less accurate than the mouse. A recently developed technique, EyePoint, represents the state of the art in gaze selection techniques. EyePoint combines gaze input with keyboard input. Evaluation results for this technique are encouraging, but accuracy is still a concern. Early trigger errors, resulting from users triggering a selection before looking at the intended target, were found to be the most commonly occurring errors for this technique. The primary goal of this research was to improve the usability of gaze selection techniques. In order to achieve this goal, novel gaze selection techniques were developed. New techniques were developed by combining elements of existing techniques in novel ways. Seven novel gaze selection techniques were developed. Three of these techniques were selected for evaluation. A software framework was developed for implementing and evaluating gaze selection techniques. This framework was used to implement the gaze selection techniques developed during this research. Implementing and evaluating all of the techniques using a common framework ensured consistency when comparing the techniques. The novel techniques which were developed were evaluated against EyePoint and the mouse using the framework. The three novel techniques evaluated were named TargetPoint, StaggerPoint and ScanPoint. TargetPoint combines motor space expansion with a visual feedback highlight whereas the StaggerPoint and TargetPoint designs explore novel approaches to target selection disambiguation. A usability evaluation of the three novel techniques alongside EyePoint and the mouse revealed some interesting trends. TargetPoint was found to be more usable and accurate than EyePoint. This novel technique also proved more popular with test participants. One aspect of TargetPoint which proved particularly popular was the visual feedback highlight, a feature which was found to be a more effective method of combating early trigger errors than existing approaches. StaggerPoint was more efficient than EyePoint, but was less effective and satisfying. ScanPoint was the least popular technique. The benefits of providing a visual feedback highlight and test participants' positive views thereof contradict views expressed in existing research regarding the usability of visual feedback. These results have implications for the design of future gaze selection techniques. A set of design principles was developed for designing new gaze selection techniques. The designers of gaze selection techniques can benefit from these design principles by applying them to their techniques
- Full Text:
- Date Issued: 2009
- Authors: Van Tonder, Martin Stephen
- Date: 2009
- Subjects: Human-computer interaction , User interfaces (Computer systems) , Gaze
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:10469 , http://hdl.handle.net/10948/882 , Human-computer interaction , User interfaces (Computer systems) , Gaze
- Description: Eye gaze interaction enables users to interact with computers using their eyes. A wide variety of eye gaze interaction techniques have been developed to support this type of interaction. Gaze selection techniques, a class of eye gaze interaction techniques which support target selection, are the subject of this research. Researchers developing these techniques face a number of challenges. The most significant challenge is the limited accuracy of eye tracking equipment (due to the properties of the human eye). The design of gaze selection techniques is dominated by this constraint. Despite decades of research, existing techniques are still significantly less accurate than the mouse. A recently developed technique, EyePoint, represents the state of the art in gaze selection techniques. EyePoint combines gaze input with keyboard input. Evaluation results for this technique are encouraging, but accuracy is still a concern. Early trigger errors, resulting from users triggering a selection before looking at the intended target, were found to be the most commonly occurring errors for this technique. The primary goal of this research was to improve the usability of gaze selection techniques. In order to achieve this goal, novel gaze selection techniques were developed. New techniques were developed by combining elements of existing techniques in novel ways. Seven novel gaze selection techniques were developed. Three of these techniques were selected for evaluation. A software framework was developed for implementing and evaluating gaze selection techniques. This framework was used to implement the gaze selection techniques developed during this research. Implementing and evaluating all of the techniques using a common framework ensured consistency when comparing the techniques. The novel techniques which were developed were evaluated against EyePoint and the mouse using the framework. The three novel techniques evaluated were named TargetPoint, StaggerPoint and ScanPoint. TargetPoint combines motor space expansion with a visual feedback highlight whereas the StaggerPoint and TargetPoint designs explore novel approaches to target selection disambiguation. A usability evaluation of the three novel techniques alongside EyePoint and the mouse revealed some interesting trends. TargetPoint was found to be more usable and accurate than EyePoint. This novel technique also proved more popular with test participants. One aspect of TargetPoint which proved particularly popular was the visual feedback highlight, a feature which was found to be a more effective method of combating early trigger errors than existing approaches. StaggerPoint was more efficient than EyePoint, but was less effective and satisfying. ScanPoint was the least popular technique. The benefits of providing a visual feedback highlight and test participants' positive views thereof contradict views expressed in existing research regarding the usability of visual feedback. These results have implications for the design of future gaze selection techniques. A set of design principles was developed for designing new gaze selection techniques. The designers of gaze selection techniques can benefit from these design principles by applying them to their techniques
- Full Text:
- Date Issued: 2009
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