3. Electronic Theses and Dissertations (ETDs) - All submissions
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Item The association between the lunar cycle and patterns of patient presentation to the emergency department(2015) Futcher, Grant DudleyAim: To determine any association between the lunar synodic or anomalistic months and the nature and volume of emergency department patient consultations and hospital admissions from the emergency department (ED). Design: A retrospective, descriptive study. Setting: All South African EDs of a private hospital group. Patients: All patients consulted from 01 January 2005 to 31 December 2010. Methods: Data was extracted from monthly records and statistically evaluated, controlling for calendric variables. Lunar variables were modelled with volumes of differing priority of hospital admissions and consultation categories including; trauma, medical, paediatric, work injuries, obstetrics and gynaecology, intentional self harm, sexual assault, dog bites and total ED consultations. Main Results: No significant differences were found in all anomalistic and most synodic models with the consultation categories. Small but significant increases were found with a small number of synodic models around full moon with some categories, P2 medical, total paediatric consultations and total admissions. Significant decreases in admissions, particulary total admissions, were found around perigee. The effect sizes of all significant lunar associations were smaller than those of the calendric variables. Conclusions: Most comparisons demonstrated no lunar association. Small but significant associations were demonstrated around full moon with some synodic models. A number of anomalistic admission models demonstrated small but significant decreases in admissions at perigee.Item Introducing the moon to South African natural science classrooms(2009-04-08T11:36:42Z) Kelfkens, LesleyThis dissertation concerns the the problem that natural science teachers with limited astronomy backgrounds have to teach new curriculum content about lunar motion, phases and eclipses. My study aims to establish: 60 teachers’ knowledge of lunar phenomena through surveys; whether an intervention incorporating models and activities is effective at improving a case study group’s understandings; how the case study teachers use these activities and models in the classroom. My results indicate that the majority of natural science teachers have little formal astronomy education. Only two teachers held a scientific understanding of lunar phenomena. The intervention led towards a more scientific understanding amongst the case study group. Scale is essential for developing an understanding of lunar phenomena and models are extremely beneficial, but participants experience spatial problems when viewing models from an external perspective. I propose in-service training in small groups for building knowledge and increasing confidence for teaching this content.