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Now showing items 41-50 of 70
Seven lessons from manyfield inflation in random potentials
(IoPJOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2018-01)
We study inflation in models with many interacting fields subject to randomly generated scalar potentials. We use methods from non-equilibrium random matrix theory to construct the potentials and an adaption of the ‘transport ...
Inhomogeneous initial data and small-field inflation
(IoPJournal of Cosmology and Astroparticle Physics, 2018-05-08)
We consider the robustness of small-field inflation in the presence of scalar field inhomo- geneities. Previous numerical work has shown that if the scalar potential is flat only over a narrow in- terval, such as in commonly ...
ADHM and the 4d quantum Hall effect
(Journal of High Energy Physics, 2018-04-01)
© 2018, The Author(s). Yang-Mills instantons are solitonic particles in d = 4 + 1 dimensional gauge theories. We construct and analyse the quantum Hall states that arise when these particles are restricted to the lowest ...
Designing with community health workers: feedback-integrated multimedia learning for rural community health
(2018)
Community Health Workers (CHWs) are an integral part of the rural health system, and it is imperative that their voices are accommodated in digital health projects. In the mobile health education project discussed in this ...
Grammars for generating isiXhosa and isiZulu weather bulletin verbs
(2018)
The Met Office has investigated the use of natural language generation (NLG) technologies to streamline the production of weather forecasts. Their approach would be of great benefit in South Africa because there is no fast ...
Usability heuristics for fast crime data anonymization in resource-constrained contexts
(2018)
This thesis considers the case of mobile crime-reporting systems that have emerged as an effective and efficient data collection method in low and middle-income countries. Analyzing the data, can be helpful in addressing ...
Algorithms for efficiently and effectively matching agents in microsimulations of sexually transmitted infections
(2018)
Mathematical models of the HIV epidemic have been used to estimate incidence, prevalence and life-expectancy, as well the benefits and costs of public health interventions, such as the provision of antiretroviral treatment. ...
Enhancing colour-coded poll sheets using computer vision as a viable Audience Response System (ARS) in Africa
(2018)
Audience Response Systems (ARS) give a facilitator accurate feedback on a question posed to the listeners. The most common form of ARS are clickers; Clickers are handheld response gadgets that act as a medium of communication ...
Neuro-evolution behavior transfer for collective behavior tasks
(2018)
The design of effective, robust and autonomous controllers for multi-agent and multi-robot systems is a long-standing problem in the fields of computational intelligence and robotics. Whilst nature-inspired problem-solving ...