Patterns and Pattern Languages for Mobile Augmented Reality
- Authors: Munro, Donald
- Date: 2020
- Subjects: Augmented reality , Educational technology
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/48510 , vital:40883
- Description: Mixed Reality is a relatively new field in computer science which uses technology as a medium to provide modified or enhanced views of reality or to virtually generate a new reality. Augmented Reality is a branch of Mixed Reality which blends the real-world as viewed through a computer interface with virtual objects generated by a computer. The 21st century commodification of mobile devices with multi-core Central Processing Units, Graphics Processing Units, high definition displays and multiple sensors controlled by capable Operating Systems such as Android and iOS means that Mobile Augmented Reality applications have become increasingly feasible. Mobile Augmented Reality is a multi-disciplinary field requiring a synthesis of many technologies such as computer graphics, computer vision, machine learning and mobile device programming while also requiring theoretical knowledge of diverse fields such as Linear Algebra, Projective and Differential Geometry, Probability and Optimisation. This multi-disciplinary nature has led to a fragmentation of knowledge into various specialisations, making it difficult to integrate different solution components into a coherent architecture. Software design patterns provide a solution space of tried and tested best practices for a specified problem within a given context. The solution space is non-prescriptive and is described in terms of relationships between roles that can be assigned to software components. Architectural patterns are used to specify high level designs of complete systems, as opposed to domain or tactical level patterns that address specific lower level problem areas. Pattern Languages comprise multiple software patterns combining in multiple possible sequences to form a language with the individual patterns forming the language vocabulary while the valid sequences through the patterns define the grammar. Pattern Languages provide flexible generalised solutions within a particular domain that can be customised to solve problems of differing characteristics and levels of iii complexity within the domain. The specification of one or more Pattern Languages tailored to the Mobile Augmented Reality domain can therefore provide a generalised guide for the design and architecture of Mobile Augmented Reality applications from an architectural level down to the ”nuts-and-bolts” implementation level. While there is a large body of research into the technical specialisations pertaining to Mobile Augmented Reality, there is a dearth of up-to-date literature covering Mobile Augmented Reality design. This thesis fills this vacuum by: 1. Providing architectural patterns that provide the spine on which the design of Mobile Augmented Reality artefacts can be based; 2. Documenting existing patterns within the context of Mobile Augmented Reality; 3. Identifying new patterns specific to Mobile Augmented Reality; and 4. Combining the patterns into Pattern Languages for Detection & Tracking, Rendering & Interaction and Data Access for Mobile Augmented Reality. The resulting Pattern Languages support design at multiple levels of complexity from an object-oriented framework down to specific one-off Augmented Reality applications. The practical contribution of this thesis is the specification of architectural patterns and Pattern Language that provide a unified design approach for both the overall architecture and the detailed design of Mobile Augmented Reality artefacts. The theoretical contribution is a design theory for Mobile Augmented Reality gleaned from the extraction of patterns and creation of a pattern language or languages.
- Full Text:
- Date Issued: 2020
- Authors: Munro, Donald
- Date: 2020
- Subjects: Augmented reality , Educational technology
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/48510 , vital:40883
- Description: Mixed Reality is a relatively new field in computer science which uses technology as a medium to provide modified or enhanced views of reality or to virtually generate a new reality. Augmented Reality is a branch of Mixed Reality which blends the real-world as viewed through a computer interface with virtual objects generated by a computer. The 21st century commodification of mobile devices with multi-core Central Processing Units, Graphics Processing Units, high definition displays and multiple sensors controlled by capable Operating Systems such as Android and iOS means that Mobile Augmented Reality applications have become increasingly feasible. Mobile Augmented Reality is a multi-disciplinary field requiring a synthesis of many technologies such as computer graphics, computer vision, machine learning and mobile device programming while also requiring theoretical knowledge of diverse fields such as Linear Algebra, Projective and Differential Geometry, Probability and Optimisation. This multi-disciplinary nature has led to a fragmentation of knowledge into various specialisations, making it difficult to integrate different solution components into a coherent architecture. Software design patterns provide a solution space of tried and tested best practices for a specified problem within a given context. The solution space is non-prescriptive and is described in terms of relationships between roles that can be assigned to software components. Architectural patterns are used to specify high level designs of complete systems, as opposed to domain or tactical level patterns that address specific lower level problem areas. Pattern Languages comprise multiple software patterns combining in multiple possible sequences to form a language with the individual patterns forming the language vocabulary while the valid sequences through the patterns define the grammar. Pattern Languages provide flexible generalised solutions within a particular domain that can be customised to solve problems of differing characteristics and levels of iii complexity within the domain. The specification of one or more Pattern Languages tailored to the Mobile Augmented Reality domain can therefore provide a generalised guide for the design and architecture of Mobile Augmented Reality applications from an architectural level down to the ”nuts-and-bolts” implementation level. While there is a large body of research into the technical specialisations pertaining to Mobile Augmented Reality, there is a dearth of up-to-date literature covering Mobile Augmented Reality design. This thesis fills this vacuum by: 1. Providing architectural patterns that provide the spine on which the design of Mobile Augmented Reality artefacts can be based; 2. Documenting existing patterns within the context of Mobile Augmented Reality; 3. Identifying new patterns specific to Mobile Augmented Reality; and 4. Combining the patterns into Pattern Languages for Detection & Tracking, Rendering & Interaction and Data Access for Mobile Augmented Reality. The resulting Pattern Languages support design at multiple levels of complexity from an object-oriented framework down to specific one-off Augmented Reality applications. The practical contribution of this thesis is the specification of architectural patterns and Pattern Language that provide a unified design approach for both the overall architecture and the detailed design of Mobile Augmented Reality artefacts. The theoretical contribution is a design theory for Mobile Augmented Reality gleaned from the extraction of patterns and creation of a pattern language or languages.
- Full Text:
- Date Issued: 2020
Exploring emotional intelligence perceptions of school leaders in relation to social justice: a case study
- Authors: Bese, Samuel
- Date: 2019
- Subjects: Educational leadership
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/36529 , vital:33963
- Description: The aim of this study was to explore school leaders’ perceptions of intrapersonal and interpersonal emotional intelligence (EI) in relation to social justice aspects, such as equity, access and inclusive participation in the Libode Educational District of Eastern Cape Province. This district, like many other rural districts in South Africa, has to face critical leadership issues, which have an influence on how school leaders could enact social justice practices in schools (DoE, 2012). This qualitative study employed twelve in-depth interview research participants, which included 6 purposively selected principals and 6 deputy principals. Data collection and content analysis also included the following: 6 focus group interviews with head of departments (HODs) and school governing bodies (SGBs); document analysis of the minutes of school meetings; and Department of Education (DoE) memorandums. The key findings that emerged through the descriptive, exploratory, social interpretive perspectives used in this study revealed the relevance of: • school leaders’ perceptions of intrapersonal EI in enhancing social justice practices with regard to equity, access, and inclusive participation; and • school leaders’ perceptions of interpersonal EI in enhancing social justice practices with regard to equity, access, and inclusive participation. The research participants’ perceptions of EI promoted deeper understanding of how school leaders could engage in social justice in relation to school leadership, teamwork, building bonds, developing others, becoming change agents, and managing conflicts in their schools. The study also captured that EI leaders can greatly manage their emotions to enhance their abilities to identify and control their destructive impulses as well as understanding and handling others’ emotions. It would be commendable for school leaders to have a deeper understanding of how their emotions could enhance social justice in their schools.
- Full Text:
- Date Issued: 2019
- Authors: Bese, Samuel
- Date: 2019
- Subjects: Educational leadership
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/36529 , vital:33963
- Description: The aim of this study was to explore school leaders’ perceptions of intrapersonal and interpersonal emotional intelligence (EI) in relation to social justice aspects, such as equity, access and inclusive participation in the Libode Educational District of Eastern Cape Province. This district, like many other rural districts in South Africa, has to face critical leadership issues, which have an influence on how school leaders could enact social justice practices in schools (DoE, 2012). This qualitative study employed twelve in-depth interview research participants, which included 6 purposively selected principals and 6 deputy principals. Data collection and content analysis also included the following: 6 focus group interviews with head of departments (HODs) and school governing bodies (SGBs); document analysis of the minutes of school meetings; and Department of Education (DoE) memorandums. The key findings that emerged through the descriptive, exploratory, social interpretive perspectives used in this study revealed the relevance of: • school leaders’ perceptions of intrapersonal EI in enhancing social justice practices with regard to equity, access, and inclusive participation; and • school leaders’ perceptions of interpersonal EI in enhancing social justice practices with regard to equity, access, and inclusive participation. The research participants’ perceptions of EI promoted deeper understanding of how school leaders could engage in social justice in relation to school leadership, teamwork, building bonds, developing others, becoming change agents, and managing conflicts in their schools. The study also captured that EI leaders can greatly manage their emotions to enhance their abilities to identify and control their destructive impulses as well as understanding and handling others’ emotions. It would be commendable for school leaders to have a deeper understanding of how their emotions could enhance social justice in their schools.
- Full Text:
- Date Issued: 2019
Online consumers’ product purchasing behaviour, advertising and involvement in fashion consumption in South Africa
- Authors: De Vos, Tania
- Date: 2017
- Subjects: Electronic commerce Retail trade -- South Africa -- Management , Purchasing Consumer behavior -- South Africa Clothing trade -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/46295 , vital:39544
- Description: While store-based fashion retailing continues to be the prevailing channel for South Africans, the country’s consumers are increasingly engaging with products online. It should be noted that online fashion purchasing behaviour does not necessarily follow the traditional consumer behaviour of the brick-and-mortar retailing environment. Therefore, ecommerce organisations are required to investigate the determinants of customer online shopping engagement among their market segments. With an improved understanding of the consumer’s online purchase behaviour, pure-play fashion retailers can create useful and successful online shopping strategies to attract new and potential customers. Thus, the future market for this industry as well as factors influencing online behaviour must be investigated and improved upon. This research study aimed to present a general overview and analysis of how online fashion consumption can grow and be sustainable in South Africa. This was accomplished by identifying various key factors contributing toward online fashion consumption and purchasing behaviour, in creating an attractive online shopping environment, whilst generating more customers, building customer loyalty and increasing competitiveness. As in any retail business, customer satisfaction is the key component for online fashion success. The purpose of this study was to execute a novel assessment of online consumers’ product purchasing behaviour, as well as advertising and involvement in fashion consumption in the South African context. To achieve this purpose, an in-depth literature review and a positivistic research investigation were conducted. The selected method was the most appropriate approach to achieve the research objectives by answering the research questions as well as to test the proposed hypotheses in relation to The Perceived Success of Online Fashion Consumption (dependant variables). As mentioned, the study involved a deductive approach of the positivistic paradigm to identify online purchasing motivation and factors that can assist with indicating what the pure-play fashion interface needs to deliver to stay competitive and increase market presence. This research study is considerably valuable as data from 16087 respondents from the participating pure-play fashion retailer have been recorded and the results indicated that the proposed hypotheses were all supported, thus reporting a significant relationship and positive influence on the perceived success of online fashion consumption.
- Full Text:
- Date Issued: 2017
- Authors: De Vos, Tania
- Date: 2017
- Subjects: Electronic commerce Retail trade -- South Africa -- Management , Purchasing Consumer behavior -- South Africa Clothing trade -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/46295 , vital:39544
- Description: While store-based fashion retailing continues to be the prevailing channel for South Africans, the country’s consumers are increasingly engaging with products online. It should be noted that online fashion purchasing behaviour does not necessarily follow the traditional consumer behaviour of the brick-and-mortar retailing environment. Therefore, ecommerce organisations are required to investigate the determinants of customer online shopping engagement among their market segments. With an improved understanding of the consumer’s online purchase behaviour, pure-play fashion retailers can create useful and successful online shopping strategies to attract new and potential customers. Thus, the future market for this industry as well as factors influencing online behaviour must be investigated and improved upon. This research study aimed to present a general overview and analysis of how online fashion consumption can grow and be sustainable in South Africa. This was accomplished by identifying various key factors contributing toward online fashion consumption and purchasing behaviour, in creating an attractive online shopping environment, whilst generating more customers, building customer loyalty and increasing competitiveness. As in any retail business, customer satisfaction is the key component for online fashion success. The purpose of this study was to execute a novel assessment of online consumers’ product purchasing behaviour, as well as advertising and involvement in fashion consumption in the South African context. To achieve this purpose, an in-depth literature review and a positivistic research investigation were conducted. The selected method was the most appropriate approach to achieve the research objectives by answering the research questions as well as to test the proposed hypotheses in relation to The Perceived Success of Online Fashion Consumption (dependant variables). As mentioned, the study involved a deductive approach of the positivistic paradigm to identify online purchasing motivation and factors that can assist with indicating what the pure-play fashion interface needs to deliver to stay competitive and increase market presence. This research study is considerably valuable as data from 16087 respondents from the participating pure-play fashion retailer have been recorded and the results indicated that the proposed hypotheses were all supported, thus reporting a significant relationship and positive influence on the perceived success of online fashion consumption.
- Full Text:
- Date Issued: 2017
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