Thesis (M.Sc.) -- University of Limpopo, 2021 / Cognitive Radio (CR) is a promising technology designed to solve many issues, especially spectrum underutilisation and scarcity. The requirement for spectrum effectiveness was essential, and consequently, the possibility of CR arrived along and introduced the unlicensed Secondary Users (SU). SU can operate on the unlicensed and licensed spectrum bands on a condition that they avoid interference with the licensed Primary Users (PU). This approach is called the Dynamic Spectrum Allocation (DSA) and has solved the underutilisation of spectrum using the spectrum holes. The United States of America’s telecommunication regulator Federal Communication Commission (FCC) introduces spectrum bands by unlicensed users looking at the rapid growth of wireless applications and devices; therefore, the Fixed Spectrum Allocation (FSA) become inadequate because of the spectrum crowded issues. Accomplishing this design requirement while meeting the Quality of Service (QoS) of SU is a challenge; thus, the cross-layer design (CLD) was introduced to enhance the efficiency and effectiveness of Cognitive Network (CN). CLD arrangements in Cognitive Radio Network (CRN) are empowering; however, there are yet numerous issues and difficulties that must be addressed, such as resource allocation and others that may negatively impact network performance. Routing in CRN also necessitates the cross-layering approach. Therefore, in this work, designing a protocol that will solve routing issues and channel selection will also maximise spectrum opportunistically. In this study, we propose the Optimised Cognitive Cross-layer Multipath Probabilistic Routing (OCCMPR) protocol, which is the optimised version of Cognitive Cross-layer Multipath Probabilistic Routing (CCMPR). We used MATLAB simulation installed in the Windows 10 operating system (OS) tool to generate comparison results. We compared the OCCMPR protocol with the existing protocols, the Cognitive Ad-hoc On-demand Distance Vector (CAODV) and the CCMPR protocols. / Council for Scientific and Industrial Research (CSIR)

This study describes the social practices involved in the situated activity of report writing in an engineering automotive discourse community in South Africa. In particular, the study focuses on the subjectivity of predominantly English Second Language (ESL) engineers writing reports by determining what literacy means to them and what meanings they give to dominant literacy practices in report writing, especially feedback in text production. In the South African engineering workplace, because of the diversity and complexity of language and identity issues, the appropriation of the required literacy skills tends to be multifaceted. This context is made more complex as English is the business language upon which engineering is based with engineering competence often related to English proficiency. Therefore, the study is located within the understanding that literacy is always situated within specific discoursal practices whose ideologies, beliefs, power relations, values and identities are manifested rhetorically. The basis for this critical theory of literacy is the assertion that literacy is a social practice which involves not only observable units of behaviour but values, attitudes, feelings and social relationships. As the institution’s socio-cultural context in the form of embedded historical and institutional forces impact on writer identity and writing practices or ways of doing report writing, notions of writing as a transparent and autonomous system are also challenged. As critical ethnography is concerned with multiple perspectives, it was selected as the preferred methodology and critical realism to derive definitions of truth and validity. Critical ethnography explores cultural orientations of local practice contexts and incorporates multiple understandings providing a holistic understanding of the complexity of writing practices. As human experience can only be known under particular descriptions, usually in terms of available discourses such as language, writing and rhetoric, the dominant practices emerging in response to the report acceptance event are explored, especially that of supervisor feedback practices as they causally impact on report-writing practices during the practice of report acceptance. Although critical realism does not necessarily demonstrate successful causal explanations, it does look for substantial relations within wider contexts to illuminate part-whole relationships. Therefore, an attempt is made to find representativeness or fit with situated engineering literacy practices and wider and changing literacy contexts, especially the impact of Higher Education and world Englishes as well as the expanding influence of technological and digital systems on report-writing practices.

<p>The aim of the research project is to investigate the effectiveness of an information literacy intervention for first year engineering students at the Cape Peninsula University of Technology. Information literacy has been identified as a necessary outcome of tertiary education. It refers to the life-long learning competencies of finding and using information in order to solve problems, to make decisions and to create new knowledge. Information literacy education has evolved from earlier forms of library user education, such as bibliographic instruction, and is central to the mission of academic libraries. However, librarians responsible for information literacy programmes seldom evaluate the effectiveness of their interventions. In today&rsquo / s climate of accountability and outcomes-based education, it is necessary to provide evidence of the benefits of the user education that libraries provide. The researcher uses the American College and Research Library (ACRL) Information Literacy Competency Standards for Higher Education, which are internationally recognized and widely used by South African academic librarians, as a benchmark to evaluate an intervention for a group of first year students enrolled for a mechanical engineering course. The intervention consists of two workshops which aim to teach the students to find information relevant to their essays via the university&rsquo / s OPAC, various engineering databases and to teach them how to reference and cite their sources in their essays. The research methodology assessed students&rsquo / information literacy before and after the two workshops with the use of a questionnaire consisting of a set of questions based on some of the ACRL standards. The questionnaire also gathered data on students&rsquo / prior experience of libraries, reading and computers, which might impact on their information literacy...</p>

<p>The aim of the research project is to investigate the effectiveness of an information literacy intervention for first year engineering students at the Cape Peninsula University of Technology. Information literacy has been identified as a necessary outcome of tertiary education. It refers to the life-long learning competencies of finding and using information in order to solve problems, to make decisions and to create new knowledge. Information literacy education has evolved from earlier forms of library user education, such as bibliographic instruction, and is central to the mission of academic libraries. However, librarians responsible for information literacy programmes seldom evaluate the effectiveness of their interventions. In today&rsquo / s climate of accountability and outcomes-based education, it is necessary to provide evidence of the benefits of the user education that libraries provide. The researcher uses the American College and Research Library (ACRL) Information Literacy Competency Standards for Higher Education, which are internationally recognized and widely used by South African academic librarians, as a benchmark to evaluate an intervention for a group of first year students enrolled for a mechanical engineering course. The intervention consists of two workshops which aim to teach the students to find information relevant to their essays via the university&rsquo / s OPAC, various engineering databases and to teach them how to reference and cite their sources in their essays. The research methodology assessed students&rsquo / information literacy before and after the two workshops with the use of a questionnaire consisting of a set of questions based on some of the ACRL standards. The questionnaire also gathered data on students&rsquo / prior experience of libraries, reading and computers, which might impact on their information literacy...</p>