43867 research outputs found
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Homing on post toxic landscape
Get PDFAbstract: Please refer to full text to view abstract.M.Tech. (Architecture
Responsive architecture : structures that respond to its users and the future of urbanite spaces
Get PDFAbstract: Please refer to full text to view abstract.M.Tech. (Architecture
Characterizations of graphs with given maximum degree and smallest possible matching number
Get PDFAbstract: Please refer to full text to view abstract.Ph.D. (Mathematics
Facilitation of student nurses’ ethical competence through simulation-based learning at a higher education institution in Johannesburg
Get PDFAbstract: Introduction: The prevalence of ethical issues encountered in clinical practice calls for ethical training to prepare emerging nurses with the ability to deal with ethical dilemmas. Ethical competence is a key component that the South African Nursing Council compels each nursing professional to have. Hence, the undergraduate nursing curricula include the acquisition of ethical competence. Ethical competence allows student nurses to make ethical decisions in clinical practice. A classroom case review and discussions have been a common approach to facilitate ethical competence, but little is known about how to facilitate ethical competence using a simulation-based learning (SBL) approach. As a result, nursing educators and clinical nurse preceptors advocate for SBL as a proposed model for facilitating ethical competence in clinical nursing education and training. The purpose of this study was to identify and explore ways to facilitate student nurses’ ethical competence and provide recommendations to facilitate ethical competence through SBL at a higher education institution in Johannesburg. Design applied: A qualitative, exploratory, descriptive and contextual research design was used to explore and describe ways to facilitate student nurses’ ethical competence through SBL at a higher education institution in Johannesburg. Recommendations were also provided on how student nurses’ ethical competence can be facilitated. The study population was nurse educators teaching ethics, and nurse educators and clinical nursing preceptors using SBL to facilitate student nurses’ ethical competence at a selected higher education institution in Johannesburg. Purposive sampling was used to select the sample for the study. Methods applied: The researcher used in-depth, online, individual interviews to collect data until data saturation was reached with participant number nine. The interviews were audio-recorded while the researcher was writing field notes. Giorgi’s thematic descriptive data analysis method was employed for data analyses. Credibility, dependability, confirmability, and transferability were used as measures of trustworthiness. The researcher also applied the principle of autonomy, the principle...M.Cur
Systematics of the subfamily Thymelaeoideae (Thymelaeaceae) in Southern Africa
Get PDFAbstract: The subfamily Thymelaeoideae is the larger of two subfamilies in the plant family Thymelaeaceae, consisting of about 820 species in 36 genera. Its members are distributed mainly across Africa, Australia, and Asia. All the southern African members of Thymelaeaceae belong to the subfamily Thymelaeaoideae and comprise about 210 species distributed across eight genera – Dais Royen ex L., Gnidia L., Lachnaea L., Lasiosiphon Fresen., Passerina L., Peddiea Harv., Struthiola L., and Synaptolepis Oliv. Preliminary phylogenetic analyses using plastid (rbcL and trnL-F) and nuclear (ITS) regions revealed that Gnidia was polyphyletic in relation to the southern African genera – Lachnaea, Lasiosiphon, Passerina, and Struthiola and other southern hemisphere genera such as Drapetes Banks ex. Lam., Kelleria Endl., and Pimelea Banks ex. Gaertn. Significant circumscriptions are required to render Gnidia monophyletic. Clarifying the circumscription of Gnidia is also pertinent to making taxonomic changes in the subfamily. This study aimed to resolve the polyphyly of Gnidia using molecular and morphological data. A more robust phylogeny was reconstructed for the subfamily Thymelaeoideae with increased sampling in Gnidia and the addition of two plastid genes (matK and rps16). Morphological characters were reconstructed onto the phylogenies to understand their patterns of evolution within the subfamily...Ph.D. (Botany
Multi-Agent Image Recognition System for Mathematical Expressions appearing in natural images
Get PDFAbstract: Images have been used to express and convey information for so many years. Over the years, the human visual cortex has adapted through the environments that we have lived in. This has paved way for cognitive modelling of the visual cortex, where computer models have been developed to carry out visual information processing functions. This dissertation presents a system that reads in digital images of mathematical expressions with noisy backgrounds, and then applies agents to the various stages of image recognition, identifying the characters in the mathematical expression. The model is called Natural Image Mathematical Expression Recognition Model (NIMER). The NIMER model applies both supervised and unsupervised learning methods to the process of recognition. NIMER follows the classic two step recognition process, which is segmentation and classification, applying multiple agents and ensemble learning at each of the stages. The segmentation stage is composed of Region-based Convolutional Neural Network (R-CNN), Minimum Spanning Tree (MST) and Connected Components Labelling (CCL) agents. The MST and CCL agents apply a form of unsupervised learning similar to clustering in order to segment images, and R-CNN uses supervised learning. The classification stage is made up of Convolutional Neural Network (CNN), K-Nearest Neighbour (KNN) and Support Vector Machine (SVM) agents which all use a supervised form of learning. The NIMER model presents ensemble results at each stage that are better than the individual agent results.M.Sc. (Computer Science
A model to assist young women who have experiences of perceived rejection from their mothers to facilitate their own mental health
Get PDFAbstract: Young women’s experiences of perceived rejection from their mothers impact the global burden of disease in more ways than can sometimes be considered. Young women who have experiences of perceived rejection from their mothers often struggle with self-identity. Identity affects almost every aspect of the young women’s lives, including being female, being healthy, becoming a mother, and relating to self and others. How the young woman views herself influences her development of relationships. In a world where one exists with others, the experience of perceived rejection from a mother often causes young women to move through life lacking inner peace. A lack of inner peace usually shapes the way the young women process information and regulate emotions. A lack of inner peace is also often the result of missing communication, closeness and resolve from the young woman’s relationship with her mother. Depression, aggression, isolation and insecure attachments may result from having a lack of inner peace. When a young woman has experiences of perceived rejection from her mother, she tends to grow up with the notion that she is difficult to love or accept. This notion disrupts her self-worth and self-concept, causing anxiety, emotional dependency, and ineffective coping mechanisms. Substance abuse, delinquency and suicide often result from issues around self-worth and selfconcept. These findings were derived from the researcher’s completed minor dissertation. From the findings, guidelines were formulated to assist the young woman who has experiences of perceived rejection from her mother to facilitate her own mental health. In assisting the young woman to facilitate her own mental health, the following research question was asked to determine the focus of this study: “What can be done to facilitate the mental health of young women who have experiences of perceived rejection from their mothers?” The purpose of this study was to develop, implement and evaluate a model to assist young women who have experiences of perceived rejection from their mothers to facilitate their own mental health. A qualitative, exploratory, descriptive, contextual and theory-generating research design was used. The study followed Chinn and Kramer’s four steps of model development. In step one, concept analysis was done over two stages. The first stage involved concept identification, and the second stage involved the definition and classification of concepts. The central concept was identified as the facilitation of self-love, which was derived from the researcher’s minor dissertation’s identified central-concept of low self-concept and the link thereof was outlined. The central concept was defined from essential attributes that were identified from dictionary and subject definitions. The defined central concept was classified using Dickoff, James and Wiedenbach’s survey list. The definition of the central concepts was evaluated by Copi, Cohen and McMahon’ criteria. In step two, the concepts were structured into relationships. The following interrelationships were structured: The advanced psychiatric nurse practitioner assists...D.Cur. (Psychiatric Nursing
Impact of Covid-19 lockdown and economic downturn on the chiropractic profession in Mpumalanga, Limpopo, North West, Free State, Northern Cape and Eastern Cape
Get PDFM.Tech. (Chiropractic)Abstract: Background There is very little known regarding COVID-19 and its economic impact to the chiropractic profession. As COVID-19 originated in Wuhan, China in December 2019 it is still relatively new and very few studies regarding its economic impact on the chiropractic profession and other professions have been conducted. Aim The primary aim of this study was to explore the economic impact of the COVID-19 lockdown on chiropractors within the Mpumalanga, Limpopo, North West, Free State, Northern Cape and Eastern Cape provinces of South Africa. Three research questions were defined and are as follows: 1. Have Chiropractors lost income due to COVID-19 lockdown? 2. Have Chiropractors had to acquire financial aid? 3. How have Chiropractors managed to curtail costs? Method A cross-sectional, explorative and quantitative study with the use of an anonymous online survey was used by which the registered chiropractors accessed via email through a link. The questionnaire was sent out as a pilot prior to final distribution, the data was analyzed using Statistical Package of Social Sciences (SPSS). Descriptive statistical analysis was used to analyse the data. Of the 596 chiropractors in South Africa, this study focused on those practicing within Mpumalanga (n=11), Limpopo (n=8), North West (n=8), Free State (n=11), Northern Cape (n=4) and Eastern Cape (n=34) provinces making up the sample size a total of 76 participants. The survey was available from 9 February 2021 till 20 April 2021. Results This study obtained 15 valid responses which accounted for a response rate of 19.7%. The primary findings of this study are that prior to the COVID-19 pandemic (53.4%, n=8) of the participants were earning more than R70 000 on average per month, participants (46.6%, n=7) earned less than R70 000 on average per month. During the COVID-19 lockdown (40%) of participants earned between R30 000 and R50 001. Those that acquired financial aid had received compensation via the unemployment insurance fund (20%, n=8), an informal loan from a family member or friend and accessing of personal savings both respectively accounted for (13.3%) of financial aid acquisition, both a loan from the bank and Government aid..
A joint model for HIV/AIDS and diabetes and the associated complications
Get PDFAbstract: Please refer to full text to view abstract.M.Sc. (Mathematics and Applied Mathematics
Low-cost housing backlogs and demand assessment tool in South Africa with the focus on Diepsloot informal settlement
Get PDFAbstract: Throughout the world poor, low- and middle-income households are struggling to access affordable/low-cost housing. This has been exacerbated by the slow delivery of housing stock, its unaffordability, excessive house prices, and inadequate fiscally aligned housing subsidies; this has been the case in South Africa as well. Since the inception of democracy in 1994, the clamour has mounted for the delivery of sustainable low-cost housing and the opportunity for poor and ordinary South Africans to own adequate houses. However, since the introduction of low-cost housing in 1994 the government has been focusing on quantity, not quality, which has left many of these housing units, located at the periphery of urban areas, collapsing due to poor workmanship. Access to adequate affordable housing remains the biggest challenge for developed and developing countries throughout the world due to a number of factors. These include poverty, inequality, high unemployment rates, low level of education, low income rate, and slow growth of the economies in most of the regions. Low-cost housing backlogs and the rapid increase in demand for such housing remain a challenge for most countries, but especially for developing countries such as South Africa. Many employed people in the South African workforce find themselves being too well off to qualify for a subsidised housing unit and too poor to qualify for a mortgage bond from a private institution, and this has been the case for many people living in Diepsloot informal settlement.D.Ing. (Engineering Management
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