A model for a socially-aware mobile tourist recommendation system

People, whether for business or pleasure, often travel or visit locations they are unfamiliar with. To overcome this, a mobile tourist recommendation system can be used. This system is able to generate tourist attraction recommendations for a person, based on a number of criteria such as time and location. One criterion often overlooked though, is a person's social environment. This is an important consideration as touring is often done with more than one person. By not considering the other people within a person's social environment, recommendations will only be limited to the preferences of a single person. The purpose of this paper is to propose a model for a mobile tourist guide recommendation system that considers a persons social environment when generating tourist attraction recommendations. This is done by studying other tourist recommendation systems, eliciting key requirements for a socially aware tourist guide system from them, and using these requirements as input for a mobile tourist recommendation system model that can harness a person's social environment when recommending tourist attractions

Counting what counts: A researcher productivity scoring framework for South African's universities of technology

One of the three objectives of academic institutions all over the world is that of ensuring and upholding vibrant research productivity. For developing countries such as South Africa, public spending on research and development provides mechanisms for this. The South Africa’s Department of Higher Education and Training (DHET) is the custodian of government research funds. Evidence shows that DHET continues to grapple with the challenge of objectively measuring research productivity from the research funds invested in universities. The current funding framework applied by DHET has received numerous criticism one of them being its quantitative nature - it rewards quantity as opposed to quality research. This problem is more pronounced in Universities of Technology (UoTs) where, after more than ten years of operating as universities, the culture of research is not yet fully entrenched. Acknowledging the critical role played by research productivity measurements, we present a research productivity and quality measurement framework for UoTs. Using a case study of one of the UoTs, quantitative data relating to 48 aspects of the of existing research incentive system was used in determining the system’s effectiveness and efficacy in stimulating researchers’ activities. The proposed Framework consists of three components on: how to motivate researchers, what/how to measure research performance and how to incentivise researchers. Using an actual dataset of research outputs from the case study, an illustration on how to apply the framework has been provided. The results confirm our Framework’s ability to “count what counts” and proven the statement that “not everything that can be counted counts”

Satisfaction with retention factors as predictors of the job embeddedness of medical and information technology services staff

The objective of the study was to determine whether employees’ satisfaction with retention factors (measured by the Retention Factors Scale) significantly predicted their job embeddedness (measured by the Job Embeddedness Scale). A quantitative survey was conducted on a purposive sample (n=206) of early career medical and information technology services staff, identified as scarce skills in a South African client services company. Retention factors such as training and development, career opportunities, supervisor support and the characteristics of the job (skills variety, challenge and autonomy) were shown to significantly predict the participants’ sense of job embeddedness. Satisfaction with training and development opportunities was the best predictor of organisational fit, while satisfaction with career opportunities was the best predictor of organisational sacrifice. The findings add valuable new knowledge that may be used to inform retention strategies for professional staff with scarce skills in the medical and information technology services sector.Key words: retention factors, perceived job embeddedness, training and development, career opportunities, job characteristics, supervisor suppor

African perceptions of female attractiveness

Little is known about mate choice preferences outside Western, educated, industrialised, rich and democratic societies, even though these Western populations may be particularly unrepresentative of human populations. To our knowledge, this is the first study to test which facial cues contribute to African perceptions of African female attractiveness and also the first study to test the combined role of facial adiposity, skin colour (lightness, yellowness and redness), skin homogeneity and youthfulness in the facial attractiveness preferences of any population. Results show that youthfulness, skin colour, skin homogeneity and facial adiposity significantly and independently predict attractiveness in female African faces. Younger, thinner women with a lighter, yellower skin colour and a more homogenous skin tone are considered more attractive. These findings provide a more global perspective on human mate choice and point to a universal role for these four facial cues in female facial attractiveness.Publisher PDFPeer reviewe

Perceptions of service quality by clients and contact-personnel in the South African retail banking sector

A superior level of service quality is an important objective for South African retail banks. This paper investigates the levels of perceived service quality among 550 clients and 559 branch contactpersonnel in retail banks in central South Africa. The perceptions are compared, and the findings reveal that clients regard the levels of service they receive to be better than what the contact-personnel perceive them to be experiencing. The physical branch environment was also shown to be an important dimension of perceived service quality among retail clients. A cluster analysis identified three market segments to use when adopting marketing strategies, and the demographic factors of age, race and geographical location were found to be important considerations when developing these marketing strategies. An explicit micro-market marketing approach that is flexible and tailor-made to the characteristics of the location of the branch is a recommendation of the paper.Key words: service quality, central South Africa, retail bank

Impact of nutrients and herbivory by Eccritotarsus catarinensis on the biological control of water hyacinth, Eichhornia crassipes

Many water hyacinth infestations in South Africa are the symptom of eutrophication, and as a result, biological control of this weed is variable. This study examined the effects of herbivory by the mirid, Eccritotarsus catarinensis, on water hyacinth grown at high, medium and low nitrogen (N) and phosphorus (P) nutrient concentrations. Water nutrient concentration appears to be the overriding factor affecting plant growth parameters of water hyacinth plants—at high nutrient concentrations, leaf and daughter plant production were more than double than at low nutrient concentrations, while stem length was twice as great at high nutrient concentrations compared to low concentrations. Chlorophyll content was also twice as high at high nutrient concentrations than low concentrations. Conversely, flower production at high nutrient concentrations was less than half that at low concentrations. Herbivory by E. catarinensis did not have as great an effect on water hyacinth vigour as nutrient concentration did, although it significantly reduced the production of daughter plants by 23 ± 9%, the length of the second petiole by 13 ± 5%, and chlorophyll content of water hyacinth leaves by 15 ± 6%. In terms of insect numbers, mirids performed better on plants grown under medium nutrient conditions (99 ± 28 S.E.), compared to high nutrient concentrations (52 ± 27 S.E.), and low nutrient concentrations (25 ± 30 S.E.). Thus, these results suggest that the fastest and most significant reduction in water hyacinth proliferation would be reached by lowering the water nutrient concentrations, and herbivory by E. catarinensis alone is not sufficient to reduce all aspects of water hyacinth vigour, especially at very high nutrient concentrations

Spinal cord stimulation for the management of pain: Recommendations for best clinical practice

Spinal cord stimulation (SCS) is an accepted method of pain control. SCS has been used for many years and is supported by a substantial evidence base. A multidisciplinary consensus group has been convened to create a guideline for the implementation and execution of an SCS programme for South Africa (SA). This article discusses the evidence and appropriate context of SCS delivery, and makes recommendations for patient selection and appropriate use. The consensus group has also described the possible complications following SCS. This guideline includes a literature review and a summary of controlled clinical trials of SCS. The group notes that, in SA, SCS is performed mainly for painful neuropathies, failed back surgery, and chronic regional pain syndrome. It was noted that SCS is used to treat other conditions such as angina pectoris and ischaemic conditions, which have therefore been included in this guideline. These recommendations give guidance to practitioners delivering this treatment, to those who may wish to refer patients for SCS, and to those who care for patients with stimulators in situ. The recommendations also provide a resource for organisations that fund SCS. This guideline has drawn on the guidelines recently published by the British Pain Society, and parts of which have beenreproduced with the society’s permission. These recommendations have been produced by a consensus group of relevant healthcare professionals. Opinion from outside the consensus group has been incorporated through consultation with representatives of all groups for whom these  recommendations have relevance. The recommendations refer to the current body of evidence relating to SCS. The consensus group wishes to acknowledge and thank the task team of the British Pain Society for their help and input into this document

A window into a public programme for prevention of mother-to-child transmission of HIV: evidence from a prospective clinical trial

Objectives. To evaluate efficacy of the antenatal, intrapartum and postnatal antiretroviral components of a public service prevention of mother-to-child (PMTCT) programme in infants.Design. Analysis of prospectively collected screening data of demographic and MTCT-related interventions and HIV infection status of infants identified through HIV-specific DNA polymerase chain reaction.Setting. Tygerberg Children’s Hospital, Western Cape, South Africa.Subjects. HIV-infected women and their infants identified through participation in a public service PMTCT programme were referred for possible participation in a prospective study of isoniazid prophylaxis.Interventions. Key components of the programme include voluntary counselling and testing, administration of zidovudine to the mother from between 28 and 34 weeks’ gestation and to the newborn infant for the firstweek, single-dose nevirapine to the mother in labour and to the newborn shortly after birth, and free formula for 6 months.Main outcome measures. Number and percentage of HIV-infected infants and extent of exposure to antenatal, intrapartum and postnatal antiretrovirals.Results. Of 656 infants with a median age of 12.6 weeks, screened between 1 April 2005 through May 2006, 39 were HIV-infected, giving a transmission rate of 5.9% (95% confidence interval (CI) 4.4 - 8.0%). Antenatal prophylaxis was significantly associated with reduced transmission (odds ratio (OR) 0.43 (95% CI 0.21 - 0.94)) as opposed to intrapartum and postpartum components (p=0.85 and p=0.84, respectively). In multivariable analysis the antenatal component remained significant (OR=0.40 (95% CI 0.19 - 0.90)).Conclusions. The antenatal phase is the most important antiretroviral component of the PMTCT programme, allowing most opportunity for intervention