Podiatric interventions and phototherapy within the management of chronic diabetic foot Ulceration : a review to compare the average healing time

Abstract: Diabetic foot ulceration is a serious complication of Diabetes Mellitus and a most important risk factor for lower limb amputations. Diabetes is characterized by chronic hyperglycemia related to the resistance of target cells to the action of insulin; which leads to degenerative disorders caused by macroangiopathy, microangiopathy and neuropathy. These factors favor the occurrence of lower limb ulcers and so delay their healing. The slow healing rate of chronic diabetic foot ulceration has a negative impact on the patients’ quality of life. Thus there is a need for the development of new treatment modalities to improve healing rate and outcome of diabetic ulcerations..

An overview of the National Health Insurance and its possible impact on eye healthcare services in South Africa

The National Health Insurance (NHI) is an important development that underpins democracy in South Africa. It aims to redress the inequities of public healthcare delivery by implementing transformational policies towards establishing inclusive public healthcare coverage for the entire population of South Africa, with more emphasis on health promotion. The implementation of this initiative has created some hope amongst primary eye healthcare professionals, such as optometrists, that their profession may finally be given the recognition it deserves. Although the government is contemplating introducing a new directorate for eye healthcare and forming an advisory committee on eye healthcare reporting to the Minister of Health, the extent to which eye healthcare will be incorporated into the NHI is currently not clear. It is believed that the white paper on the NHI will shed some light on these issues. Unfortunately, current indications are that the initiative has serious challenges to overcome such as poor infrastructure, budgetary constraints and lack of interest from other healthcare professionals. Furthermore, corruption issues may also need to be addressed if the NHI is to be implemented successfully. Nevertheless, the NHI remains a positive proposition for universal health coverage for the people of South Africa, and there is hope that primary eye care providers, such as optometrists and other eye care professionals, will also play a greater role in the NHI than they currently do in the public healthcare system

Effectiveness of Inclusivity in Technical Education: A Case of Visually Impaired Learners in Mashonaland East Province of Zimbabwe

The study investigated on effectiveness of inclusivity in the teaching and learning of technical subjects in high schools of Mashonaland East Province in Zimbabwe. A descriptive survey research design was adopted while the questionnaire and the interview guide were used to receive data for the study.  Analysis was done using descriptive statistics in terms of mean scores. Based on the findings, the study concluded that the inclusion of learners with low vision in the teaching of technical subjects in the main stream was not effectively conducted as most teachers were not trained to handle learners with special educational needs such as the visually impaired at colleges or universities. Specialist teachers did not get time to professionally develop their colleagues and hence subject teachers remained ineffective and incompetent. It is therefore recommended that school authorities should periodically initiate staff development programs for subject teachers on how to effectively help learners with low vision in the respective schools. Technical teachers’ colleges in the country should include Special Needs Education (SNE) courses for student teachers to effectively discharge their duties in the classroom. High schools managers in the province should ensure that learners with low vision get adequate time per week for assistance and remediation

An investigation into how post office managers perceive the effectiveness of change.

Thesis (MBA)-University of Natal, Durban, 2002.No abstract available

Traffic Control Recognition with AN Attention Mechanism Using Speed-Profile and Satellite Imagery Data

Traffic regulators at intersections act as an essential factor that influences traffic flow and, subsequently, the route choices of commuters. A digital map that provides up-to-date traffic control information is beneficial not only for facilitating the commuters’ trips, but also for energy-saving and environmental protection. In this paper, instead of using expensive surveying methods, we propose an automatic way based on a Conditional Variational Autoencoder (CVAE) to recognize traffic regulators, i. e., arm rules at intersections, by leveraging the GPS data collected from vehicles and the satellite imagery retrieved from digital maps, i. e., Google Maps. We apply a Long Short-Term Memory to extract the motion dynamics over a GPS sequence traversed through the intersection. Simultaneously, we build a Convolutional Neural Network (CNN) to extract the grid-based local imagery information associated with each step of the GPS positions. Moreover, a self-attention mechanism is adopted to extract the spatial and temporal features over both the GPS and grid sequences. The extracted temporal and spatial features are then combined for detecting the traffic arm rules. To analyze the performance of our method, we tested it on a GPS dataset collected by driving vehicles in Hannover, a medium-sized German city. Compared to a Random Forest model and an Encoder-Decoder model, our proposed model achieved better results with both accuracy and F1-score of 0.90 for the three-class (arm rules of uncontrolled, traffic light, and priority sign) task. We also carried out ablation studies to further investigate the effectiveness of the GPS input branch, the image input branch, and the self-attention mechanism in our model

Kinetic study on the removal of iron from gold mine tailings by citric acid

Abstract: The Gold mining generates large volumes of tailings, with consequent disposal and environmental problems. Iron tends to react with sulphur to form pyrite and pyrrhotite which then react with rain water forming acid rain. The study focuses on the removal of iron (Fe) from Gold Mine tailings; Fe was leached using citric acid as a leaching reagent. Three parameters which have an effect on the removal of Fe from the gold mine tailings, namely; temperature (25 ºC and 50 ºC), reagent concentration (0.25 M, 0.5 M, 0.75 M and 1 M) and solid loading ratio (20 %, 30 % and 40 %) were investigated. It was found that the recovery of Fe from gold mine tailings increased with increasing temperature and reagent concentration, but decreased with increasing solid loading ratio. The optimum conditions for the recovery of Fe from gold mine tailings was found to be at a temperature of 50 ºC, reagent concentration of 1 M and solid loading of 20 %. Three linear kinetic models were investigated and Prout- Tompkins kinetic model was the best fit yielding linear graphs with the highest R2 values

Eye protection practices and symptoms among welders in the Limpopo Province of South Africa+

Welding is associated with several ocular and systemic hazards especially where adequate protective measures are not taken.  The purpose of this project was to study the eye protection practices and symptoms among welders in the Capricorn District of Limpopo Province, South Africa. Questionnaires designed to investigate eye protection practices and symptoms experienced were completed byone hundred and fifty (150) welders. The types of welding done were shielded metal arc (84%), oxyacetylene gas (4%) and silver brazing (12%). The number of years spent in the welding industry ranged from one to 10 years with a mean of 5 ± 3.1 years and the number of hours of welding per day ranged from one to 10 hours with a mean of 6 ± 2.1 hours. A large percentage of the welders (89%) reported wearing protective devices when welding and the most common protective devices used by the welders were: helmets (57%), goggles(22%), and face shields (15%). Six percent used inefficient protective devices such as sunglasses.   Sixty one percent reported occasional exposure to welding flashes when not wearing any eye protection. Welding-related eye symptoms reported included foreign body sensation (18%), persistent after-images (31%), and watery eyes (50%).  Al- though the majority of the welders wore protective devices while welding, a few did not always use such devices while others used sunglasses for protection.  Moreover, many of the welders were occasionally, and only a few were always, exposed to welding flashes when protective devices were not used. Therefore, we concluded that eye protectionpractices amongst the welders appeared to be inadequate to avoid hazards associated with welding.  It is recommended that an eye protection educational campaign for welders should form part of the SouthAfrican Government’s workplace safety program

Automated Classification of Airborne Laser Scanning Point Clouds

Making sense of the physical world has always been at the core of mapping. Up until recently, this has always dependent on using the human eye. Using airborne lasers, it has become possible to quickly "see" more of the world in many more dimensions. The resulting enormous point clouds serve as data sources for applications far beyond the original mapping purposes ranging from flooding protection and forestry to threat mitigation. In order to process these large quantities of data, novel methods are required. In this contribution, we develop models to automatically classify ground cover and soil types. Using the logic of machine learning, we critically review the advantages of supervised and unsupervised methods. Focusing on decision trees, we improve accuracy by including beam vector components and using a genetic algorithm. We find that our approach delivers consistently high quality classifications, surpassing classical methods

Formulation and acceptability of local nutrient-dense foods for young children: A formative study for the Child Health, Agriculture and Integrated Nutrition (CHAIN) Trial in rural Zimbabwe.

Stunting affects almost one-quarter of children globally, leading to reduced human capacity and increased long-term risk of chronic disease. Despite intensive infant and young child feeding (IYCF) interventions, many children do not meet their requirements for essential nutrients. This study aimed to assess the feasibility of implementing an IYCF intervention utilizing nutrient-dense powders from egg, biofortified sugar beans and Moringa oleifera leaf in rural Zimbabwe. A mixed-methods formative study was conducted comprising the following: (i) a recipe formulation trial, (ii) trials of improved practices to assess acceptability of the intervention, and (iii) a participatory message formulation process to develop counselling modules for the IYCF-plus intervention. Twenty-seven mother-baby pairs were recruited between November 2019 and April 2020. Key domains affecting IYCF practices that emerged were time, emotional and physical space, cultural and religious beliefs, indigenous knowledge systems and gender dynamics. Household observations and sensory evaluation indicated high acceptability of the new ingredients. Recipe formulation and participatory message formulation by participants instilled community ownership and served to demystify existing misconceptions about the new food products. Families noted the potential for intervention sustainability because the foods could be grown locally. Supplementing complementary foods with nutrient-dense local food ingredients as powders has the potential to sustainably address nutrient-gaps in the diets of young children living in rural lower- and middle-income countries. Comprehensive IYCF counselling utilizing a gender-lens approach, family support and indigenous knowledge systems or resources are key elements to support positive behaviour change in complementary feeding interventions

The Impact of the “Shale Gas Revolution” on the United Kingdom Electricity Generation Outlook

The prospects of UK shale gas development and its role in the energy mix has generated contradictory views. Its inclusion in electricity generation is anticipated to help mitigate the grid carbon emissions. However, there is fear that a shale gas “revolution” might distract policy commitments on the development of low carbon technologies. Others argue that a shale gas “boom” could potentially create a “lock-in-effect” on the gas generation infrastructure, thus, further exacerbating the burden on carbon emissions. The uncertainty over the future role of shale gas is worsened by lack of clarity and conflicting estimates on the potential gas resource and reserves. In the midst of these uncertainties, this paper seeks to examine transition pathways incorporating shale gas and their implications on electricity sector decarbonisation and energy security objective