A note on dual giant gravitons in AdS4×CP3AdS_{4}\times \mathbb{CP}^{3}

We study some of the properties of dual giant gravitons - D2-branes wrapped on an $S^{2}\subset AdS_{4}$ - in type IIA string theory on $AdS_{4}\times \mathbb{CP}^{3}$. In particular we confirm that the spectrum of small fluctuations about the giant is both real and independent of the size of the graviton. We also extend previously developed techniques for attaching open strings to giants to this D2-brane giant and focus on two particular limits of the resulting string sigma model: In the pp-wave limit we quantize the string and compute the spectrum of bosonic excitations while in the semiclassical limit, we read off the fast string Polyakov action and comment on the comparison to the Landau-Lifshitz action for the dual open spin chain.Comment: v3 significantly changed: added coupling to RR 1-form and turned on worldvolume gauge field, computed gauge field fluctuation, added comments on closure of the sl(2) sector and re-written to improve clarity. This version published in JHE

Profile of registrars and reasons for specialisation

Introduction The shortage of general practitioners is a worldwide phenomenon and occurs in countries such as Canada, the United States of America and Saudi Arabia. Increasingly fewer students are interested in general practice as an occupation. Choosing a speciality is a complex process and is dependent on a wide range of intrinsic and extrinsic factors, including preference at the start of studies, experience during undergraduate training, and environmental factors such as cultural and socio-economic background. The aim of this study was to determine the profile of registrars at the Faculty of Health Sciences (University of the Free State), as well as their reasons for specialisation.MethodAll departments were contacted and the first author circulated questionnaires and informed consent forms during the academic afternoons. Questionnaires and informed consent forms were available in Afrikaans and English.ResultsOf the 150 questionnaires handed out, 109 were used for analysis (122 were received, of which 13 were incomplete). Most of the respondents were Afrikaans speaking (81.7%), male (68.8%), with a median age of 31 years (range 26 to 50 years), and married (67.6%). Only 13.8% of the respondents' fathers were medical doctors, 54.5% of which were general practitioners. Few respondents (13.8%) had needed to repeat any of their undergraduate studies, while 23.9% had received academic prizes. Most (91.7%) had completed family medicine during rotation in undergraduate training. The main specialisation areas were internal medicine, obstetrics and gynaecology, and radiology. Many respondents (76.9%) had worked in general practice or primary care for a median of two years (range 0.25 to 18 years). The main reasons for leaving primary care were overwork, wanting to function at a higher level, and that they saw no pathologies. Half of the respondents (49.9%) had never considered private practice as an occupation and the main reasons given were type of work and patient, no future for general practitioners, legislation, and inconvenient hours.ConclusionThis study provides some indicators as to why fewer doctors are willing to work as general practitioners or primaryhealthcare physicians. An excessive workload in the primary healthcare setting was indicated by 31.3% of the respondents as the major reason why they chose not to stay.For full text, click here:SA Fam Pract 2006;48(4):15-15

A THEMATIC LITERATURE REVIEW OF THE IMPLEMENTATION OF MOOCS - 2008 TO 2018

From around 2008, Massive Open Online Courses (MOOCs) promised a new way in which universities could better position themselves for future disruptions to the Higher Education (HE) sector. Anyone with an internet connection was now able to access vast numbers of courses, without having to pay expensive tuition fees. Now, ten years later, MOOCs as a disruptive technology, have been tried and tested. In this article, a thematic literature review is conducted to evaluate the implementation of MOOCs. The main findings are that HE institutions offering MOOCs often rate their successes or challenges in terms of the monetary returns, course uptake and completion rates, the authentication of students and the formal accreditation of courses. Other important factors include the nature and role of student engagement, the sustainability of MOOCs and the urgent need for course materials to be available and accessible. While this study focuses on the UK HE experience, future research will need to examine the usefulness of MOOCs in different country and learning contexts

Osseus metaplasia in chronic renal allograft rejection

The formation of heterotopic bone tissue outside the skeleton, known as osseous metaplasia, is a well-known phenomenon, but only a handful of cases describe this in renal allografts. We report the case of a 26-year-old female who was admitted to hospital for repair of an arteriovenous fistula of the right arm. Following her demise, the incidental finding of osseous metaplasia in the allograft kidney was made at autopsy. The pathophysiology, histology and possible clinical significance of the lesion are described

The Socio-Economic Benefit of the Livestock Traceability System on Communal Beef Farmers in Swaziland

In this article, Swaziland is placed in the forefront as a small African country that implemented a livestock traceability system to benefit both communal and commercial farmers. The communal farmers are also able to export beef to European countries, markers that were previously unavailable to them, due to the successful implementation of the Swaziland Livestock Information and Traceability System (SLITS).  Livestock traceability is briefly explained to align it with the importance of safe food production for human consumption and a few aspects are highlighted. The traceability systems is further explained in terms of its benefit to the rural economy, its role in growing the GDP and the realization of its aims as was initially expected by the Swazi Government. The data collection methods used were a document review, a case study and five interviews. It is concluded that livestock traceability systems should be adopted wider by other developing countries as it has a direct effect on the improvement of the socio-economic conditions of the rural poor. Its development and implementation remains very expensive, but Swaziland can be used as an example of a country that is able to reap the rewards from a commodity that is ample in their country, but scarce globally, leading to wider food sustainability

Occupational exposure to bloodborne viruses amongst medical practitioners in Bloemfontein, South Africa

Background The possibility of occupational exposure to bloodborne viruses such as HIV, hepatitis B virus (HBV) and hepatitis C virus (HCV) is an everyday reality to health care workers. This study reports on doctors' extent and outcome of exposure to bloodborne viruses in Bloemfontein. Methods A descriptive study was done. Doctors (n=441) actively involved in public and/or private medical practice were requested to anonymously complete a questionnaire regarding occupational exposure to bloodborne viruses (HIV, HBV, and HCV). Results A response rate of 51.7% was obtained. More than half (54.2%, 95% CI [ 47.7% ; 60.5% ]) of respondents were exposed to bloodborne viruses; 48.3% occurring with HIV positive patients and 4.3% with known HBV positive patients, and no positive HCV patients. After exposure occurred, 68.9% of patients were tested for HIV, 10.9% for HBV and only 4.2% for HCV infection. The frequency of serological testing for doctors immediately after exposure was 65.3% for HIV, 21.7% for HBV and 8.2% for HCV. No seroconversion to HIV or HCV was reported, while two seroconversions to HBV were reported. Most exposures occurred as a result of needle stick injury (85%) and occurred in the operating theatre during procedures 59.3%. The majority (59.8%) of exposed doctors did not take any prophylactic treatment and those who did, did not always complete the treatment Conclusions The risk of seroconversion to HIV after occupational exposure was as expected, while seroconversion to HBV was less than expected. The lack of adequate follow up serological testing after occupational exposure is alarming. It is the responsibility of the occupationally exposed doctor to adequately comply with prophylactic measures and undergo serological testing to ensure the least possible risk of contracting infection from a bloodborne virus. South African Family Practice Vol. 49 (3) 2007: pp. 1

Editorial

South Africa’s vital statistics are currently not suitable for monitoring progress towards injury and violence Sustainable Development Goal