Enhancement of the usability of SOA services for novice users
- Authors: Yalezo, Sabelo
- Date: 2014
- Language: English
- Type: Thesis , Masters , MSc (Computer Science)
- Identifier: http://hdl.handle.net/10353/822 , vital:26500
- Description: Recently, the automation of service integration has provided a significant advantage in delivering services to novice users. This art of integrating various services is known as Service Composition and its main purpose is to simplify the development process for web applications and facilitates reuse of services. It is one of the paradigms that enables services to end-users (i.e.service provisioning) through the outsourcing of web contents and it requires users to share and reuse services in more collaborative ways. Most service composers are effective at enabling integration of web contents, but they do not enable universal access across different groups of users. This is because, the currently existing content aggregators require complex interactions in order to create web applications (e.g., Web Service Business Process Execution Language (WS-BPEL)) as a result not all users are able to use such web tools. This trend demands changes in the web tools that end-users use to gain and share information, hence this research uses Mashups as a service composition technique to allow novice users to integrate publicly available Service Oriented Architecture (SOA) services, where there is a minimal active web application development. Mashups being the platforms that integrate disparate web Application Programming Interfaces (APIs) to create user defined web applications; presents a great opportunity for service provisioning. However, their usability for novice users remains invalidated since Mashup tools are not easy to use they require basic programming skills which makes the process of designing and creating Mashups difficult. This is because Mashup tools access heterogeneous web contents using public web APIs and the process of integrating them become complex since web APIs are tailored by different vendors. Moreover, the design of Mashup editors is unnecessary complex; as a result, users do not know where to start when creating Mashups. This research address the gap between Mashup tools and usability by the designing and implementing a semantically enriched Mashup tool to discover, annotate and compose APIs to improve the utilization of SOA services by novice users. The researchers conducted an analysis of the already existing Mashup tools to identify challenges and weaknesses experienced by novice Mashup users. The findings from the requirement analysis formulated the system usability requirements that informed the design and implementation of the proposed Mashup tool. The proposed architecture addressed three layers: composition, annotation and discovery. The researchers developed a simple Mashup tool referred to as soa-Services Provisioner (SerPro) that allowed novice users to create web application flexibly. Its usability and effectiveness was validated. The proposed Mashup tool enhanced the usability of SOA services, since data analysis and results showed that it was usable to novice users by scoring a System Usability Scale (SUS) score of 72.08. Furthermore, this research discusses the research limitations and future work for further improvements.
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- Date Issued: 2014
A critical analysis of the screen adaptation of Saule’s Unyana womntu
- Authors: Mbatsha, Thembisa
- Date: 2012
- Subjects: Xhosa fiction -- 20th century , Authors, African -- Biography , Literature -- Adaptations
- Language: English
- Type: Thesis , Masters , M Soc Sc (Arts)
- Identifier: vital:11842 , http://hdl.handle.net/10353/d1018674 , Xhosa fiction -- 20th century , Authors, African -- Biography , Literature -- Adaptations
- Description: This research will concentrate on various aspects of the screen adaptation of “Unyana womntu” (Saule, 1989). This study comprises of six chapters. In Chapter 1 of this study, the research aims and objectives are formulated. The research methods that are to be followed will involve a thorough reading of the written text, as well as a comprehensive repetitive viewing of all the episodes of the screen version. In the final part of Chapter 1, background information is provided on the personal life of the author as well as on his contributions to the African literary tradition. Background information on the production of the screen version is also provided. In the Chapter 2, the theoretical aspects of the phenomenon of literary adaptation are discussed. This discussion provides a framework for the analysis of the adaptation of “Unyana womntu” (Saule, 1989) in the remaining chapters of this study. The aim of this chapter is to identify and discuss the most important principles which come into play when the written text is adapted into a screen production. Since the screen production belongs to the genre of the performing arts, this chapter is introduced with a discussion on the performing arts and on the drama, in particular. The section will be concluded with a discussion on the different sub-types of the drama which can be found, including the screen production. The main emphasis is on an analysis of the basic features and principles of the drama in screen format. Since the screen play Unyana Womntu (1998) is based upon a novel by the same title, the literary features of the novel are to be discussed here as well. The specific features of the Xhosa novel will also receive attention.
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- Date Issued: 2012
Critical analysis of the impact of the common law on African indigenous law of inheritance a case study of post colonial legislation in Zimbabwe
- Authors: Gwarinda, Tafira Albert
- Date: 2009
- Subjects: Inheritance and succession -- Zimbabwe -- Law and legislation , Tribal government -- Zimbabwe , Customary law -- Zimbabwe , Zimbabwe -- Law and legislation
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:11110 , http://hdl.handle.net/10353/161 , Inheritance and succession -- Zimbabwe -- Law and legislation , Tribal government -- Zimbabwe , Customary law -- Zimbabwe , Zimbabwe -- Law and legislation
- Description: The study looks at the main features of African indigenous law of succession and inheritance in Zimbabwe. It draws a distinction between the forms of inheritance practised between the two major ethnic groups, the Shona and the Ndebele. Whilst the research was mainly aimed at these two groups an investigation into inheritance practice by the South African Zulu and Xhosa counterparts was also made. An investigation into the impact of western influence on succession and inheritance was made taking a look at colonial legislation and case law, the general deduction being that it was a vehicle for attaching customary law to a western type law. After independence there was the issue of the impact of constitutionalism and international human rights law on succession in post colonial Zimbabwe. These were tools for change by bringing in notions of equality between men and women, issues that were highlighted in the cornerstone case of Magaya v Magaya, which was in turn discussed in the light of the Mthemu v Letsela and Bhe trilogy of cases in South Africa. In the final chapter there is a discussion of possibilities of reform and the future of customary law in Zimbabwe the highlight here being conducting proper legal research to ascertain the true purpose of custom.
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- Date Issued: 2009