Student demographics as a predictor of use of an educational software program

Nearly ten years after the first democratic elections in South Africa, educators are still concerned about the needs of disadvantaged students, particularly when introducing computer technology into the educational process. This article reports on the findings of a research project, which explored the use of a Computer Assisted Education program by students from diverse ethnic, educational and language backgrounds. The results showed that initial presumptions that disadvantaged students would be excluded from the use of the technology may be inaccurate. South African Journal of Education Vol.24(1) 2004: 42-4

Breeding value estimation for somatic cell score in South African dairy cattle

Two fixed regression testday models were applied for variance component estimation and prediction of breeding values for somatic cell score, using testday records of the first three lactations of South African Holstein and Jersey cows. The first model (ML-model) considered the testdays of the different lactations as different traits in a multiple-trait animal model and the second analysis (RM-model) treated later lactation records as repeated measures of the first lactation. Heritabilities from the RM-model were more in the range of literature estimates compared to that of the ML-model, i.e. 0.19 + 0.003 for the Holstein breed and 0.18 + 0.003 for the Jersey breed. Rank correlations indicated that minor changes occur in the ranking of proven sires between breeding values obtained from the ML- and RM-models. Although genetic correlations between parities are not unity, the RM-model estimates more competitive variances and requires extensively less computer time to predict breeding values compared to the ML-model and are therefore recommended for breeding value estimation on a national basis. South African Journal of Animal Science Supp 2 2004: 32-3

Graphical exploration of two-dimensional functions an aid to mastering fundamental calculus concepts

Technology has become an integral part of all educational activities and can be viewed as a powerful lever to promote the understanding of fundamental mathematical concepts that underpin the study of calculus. This article reports on action research activities during 1993-1998 at the University of Pretoria, which focused on aspects that constitute the coherence between teaching, learning, mathematical conceptualisation and the use of computer graphing technology. Results identify some features of graphing utilities that are necessary to enhance fundamental concepts. The principle findings are that the meaningful combination of graphical exploration and graphical analysis according to a well thought-out didactical approach is necessary in order to incorporate technology successfully into mathematics instruction. (South African Journal of Education: 2002 22(1): 47-55

Gemeenskapsbetrokkenheid ter bevordering van onderwys in skole

Community involvement in the promotion of education in schools. Community involvement in education is an issue that has gained greater momentum in recent decades and is regarded as a big asset in promoting education in schools. It ranks very high on the South African education agenda, as is clearly illustrated by the prominence it is given in the media. The modern school in the new South Africa finds itself in an educational milieu characterized by rapid changes. It is clear that schools are facing major challenges and can no longer handle the education of learners without the support of the wider community. In the light of the school's need for support from the community, this research was undertaken with the primary aim of determining the perceptions of role players from the community regarding their involvement in the school. A quantitative research method was applied in the investigation and only an experimental investigation group was involved in the random sample, comprising 446 respondents (teachers, learners, and community members). The research results were analysed statistically by computer and thereafter interpreted. On the basis of these interpretations conclusions could be drawn. A global perspective indicates that community involvement in schools is considered extremely important, but that it is not taking place satisfactorily at the moment. It was furthermore possible to refine the global perspective on community involvement in schools into a more differentiated picture, indicating clearly which facets of involvement should receive attention and be improved. Recommendations can therefore be made for meaningful, innovative and accountable community involvement in the promotion of education in schools. (South African Journal of Education: 2001 21(4): 280-286

No. 26: Social Media, The Internet and Diasporas for Development

The recent focus on diasporas by policy-makers researchers has highlighted the rich potential of migrants as a force for shaping development activities in their countries of origin. The study of diasporas in development presents researchers a number of significant challenges. As Vertovec and Cohen suggest, ‘one of the major changes in migration patterns is the growth of populations anchored … neither at their places of origin nor at their places of destination’. The fluid, multi-sited and multi-generational nature of diaspora groupings poses considerable methodological challenges of definition, identification, location, sampling and interviewing. As the nature of African diasporas are constantly in flux so too should the methodologies we use to study them. In practice, traditional approaches lead to the same methodological roadblocks. Census and immigration data (particularly from destination countries) can provide an overall picture of diaspora stocks, flows and locations. However, privacy issues generally preclude these sources from providing disaggregated data at the level of the individual migrant or migrant household. Surveys of diaspora members have therefore become the standard means of collecting information on diaspora characteristics, identities, activities and linkages. This immediately raises a set of problems and challenges. Census data can tell us the size of the population to sample but not who the individuals are, where they live and how to contact them. Without a sampling frame, researchers tend to rely instead on ‘snowball’, ‘purposive’ or ‘convenience’ sampling. This has produced a disproportionate number of studies that rely on key informant and focus group interviews in order to create a profile of diasporas and their development-related activities. Diasporas are often geographically dispersed within a country and across different countries. Cost and time constraints and the bias of snowball and convenience sampling lead to a focus on sub-sets. Studies of diaspora members in particular cities or regions are especially common. While sample sizes vary considerably, there is a marked reliance on very small samples, which raises obvious questions about the representativeness and generalizability of the findings. The mail-out survey is still the preferred method of reaching members of a geographically dispersed diaspora, although response rates remain stubbornly low. To contact members of the diaspora, mailing lists are compiled from organizations that keep, and are willing to share, membership lists (such as diaspora organizations, embassies, alumni associations, immigrant service agencies and religious organizations). However, this means an inherent sampling bias since data collected from these individuals and groups has the potential to be skewed towards diaspora members actively engaged with their origin country. This method of ‘accessing the diaspora through the diaspora’ is also unlikely to provide much information on ‘hidden’ members of a diaspora whose immigration status may be undocumented or uncertain and who are wary of disclosing personal information directly to researchers. Researchers have also noted that members of vulnerable populations such as asylum seekers and refugees might be reluctant to provide personal information due to fear and trust issues. To identify and connect with larger numbers, different strategies need to be adopted. In this context, the potential of the internet has rarely been considered. Since the advent of the internet age, more than one billion people have become connected to the World Wide Web (WWW), creating seemingly limitless opportunities for communication. The past decade has also seen a major increase in the use of the internet by diaspora individuals and groupings. The internet has not only facilitated remittance transfers, but has increased communication among and between diasporas and influenced the formation of diasporic identities. In this context, the potential of web-based methodologies in diaspora research appears promising. The aim of this paper is twofold. First, we argue for supplementing conventional approaches with new methodologies that embrace the connectivity of diasporas, the emergence of social media and the potential of online surveys. Second, we illustrate the potential of this approach through discussion of the methods adopted in our current research on the African diaspora in Canada

Human-computer interaction for development (HCI4D):the Southern African landscape

Human-Computer interaction for development (HCI4D) research aims to maximise the usability of interfaces for interacting with technologies designed specifically for under-served, under-resourced, and under-represented populations. In this paper we provide a snapshot of the Southern African HCI4D research against the background of the global HCI4D research landscape.We commenced with a systematic literature review of HCI4D (2010-2017) then surveyed Southern African researchers working in the area. The contribution is to highlight the context- specific themes and challenges that emerged from our investigation

Delivery of broadband services to SubSaharan Africa via Nigerian communications satellite

Africa is the least wired continent in the world in terms of robust telecommunications infrastructure and systems to cater for its more than one billion people. African nations are mostly still in the early stages of Information Communications Technology (ICT) development as verified by the relatively low ICT Development Index (IDI) values of all countries in the African region. In developing nations, mobile broadband subscriptions and penetration between 2000-2009 was increasingly more popular than fixed broadband subscriptions. To achieve the goal of universal access, with rapid implementation of ICT infrastructure to complement the sparsely distributed terrestrial networks in the hinterlands and leveraging the adequate submarine cables along the African coastline, African nations and their stakeholders are promoting and implementing Communication Satellite systems, particularly in Nigeria, to help bridge the digital hiatus. This paper examines the effectiveness of communication satellites in delivering broadband-based services

West African English in Digital Discourse

This paper applies sociolinguistic and discourse-analytical approaches to examine the features of West African English (WAE) in digital discourse. Data comprises 23,374 posts and responses from some popular social and political online forums hosted by Nigerians (i.e. Nairaland and Naijapals); Ghanaians (i.e. Ghanaforum.com), and Sierra Leoneans (i.e. Sierra Online club and Sierra Leone Forum). These digital forums have served as social media platforms for discussions and debates on, and responses to recent socio-political events in those countries. Findings show that three varieties of WAE are evident in online discourse namely, the acrolect (high), mesolect (middle), and basilect (low), which sometimes depend on the educational level of the users. The local pidgin is also frequently used especially in the Nigerian forums. These varieties in turn reflect features that are characteristic of WAE such as (i) loan words within the standard (acrolect) variety (ii) code-switching between the standard variety and pidgin/Krio (iii) evidence of deviants/errors characteristic of the basilect variety and (iv) linguistic creativity such as coinages, and the language style of the Internet. Findings further show that West African online communicators in English have adapted their socio-cultural nuances of language use to modern information technology

African Universities: Stories of Change

Profiles successful foundation initiatives in Ghana, Kenya, Mozambique, Nigeria, South Africa, Tanzania, and Uganda that are reforming the higher education landscape in Africa

Computational Predictive Framework towards the Control and Reduction of Malaria incidences in Africa

Malaria persists as a problematic disease in Africa. It is the main cause of morbidity and mortality of children and efforts are currently being pooled to increase the control measures within endemic countries. With this in mind, we developed and applied a malaria control strategy from a computational perspective, to analyze, predict and offer appropriate recommendations and control measures of malaria data obtained from WHO ten Sub Saharan countries malaria report of 2008 . The analytical tool used is based on the C# programming language embedded artificial neural network intelligence system. From the outcome obtained, the system demonstrated some level of intelligence and showed the effects and impacts of some controllable factors on future malaria occurrence. The system at 90% prediction intensity showed malaria infection course to decline sharply by 2014 in all the study countries, ranging from 15.71% in Madagascar, 35.46% in Malawi, 38.44% in Nigeria, 38.98% in Sudan , 39.05% in Ethiopia 39.09% in Zambia, 40,08% in Ghana, 42.61% in Kenya, 45.21% in Uganda and 46.63% Mozambique respectively. Therefore, more future prevention, control and management interventions are needed in Madagascar and Mozambique by 2014 as compared to the rest of the countries studied. In conclusion, the tool can be used to produce sensible and logical results which can be applied to achieve reduction of possible future malaria occurrences by governmental, NGOs and other relevant health agencies for proper public health planning