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Search Results: 1 - 10 of 1958 matches for " Louise Strydom "
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Job satisfaction amongst teachers at special needs schools
Louise Strydom,Nico Nortjé,Roelf Beukes,Karel Esterhuyse
South African Journal of Education , 2012,
Abstract: The aim of this study was to establish the level ofjob satisfaction amongst teachers at special schools. Teachers in special schools need to cope with curriculum changes, the administrative duties that come with these changes, and the learners with their diverse needs. Learners with special needs require a specific educational programme and also schools that caterfor the needs of learners with emotional, social, neurological or physical problems. The research group consisted of 101 teachers working at six different special schools situated in various parts of the Bloemfontein area, two in the Mangaung area, and four were situated in suburban areas. The group consisted of English- and Afrikaans-speaking teachers of both genders and from different race groups. The data for this study were compiled by means of a short biographical questionnaire and the Minnesota Satisfaction Questionnaire. The results indicated that the teachers experienced an average level of job satisfaction. In addition to this finding, differences were also found in the levels ofjob satisfaction between different races, but not between genders.
The Analysis of an HIV and AIDS Empowering Group Work Programme for Adolescents: A Quantitative Evaluation  [PDF]
K. Olivier, H. Strydom
World Journal of AIDS (WJA) , 2013, DOI: 10.4236/wja.2013.31008
Abstract:

In this article an HIV and AIDS group work programme empowering adolescents to deal with the possible death of their parents/caregivers will be evaluated in a quantitative fashion. The data were obtained by means of the Child Functioning Inventory High School (CFI-HIGH) developed by Perspective Training College and the Generalized Contentment Scale (GCS) of Hudson (Bloom et al., 1999: 220). The guidelines for selection and inclusion of respondents in the comparison and experimental groups will be discussed, followed by information on the measuring instruments. The article will conclude with conclusions and recommendations.

Quality related principles of the South African beef classification system in relation to grading and classification systems of the world
PE Strydom
South African Journal of Animal Science , 2011,
Abstract: This paper addresses the principles related to different grading and classification systems of the world with specific focus on beef quality related outcomes. The paper uses the definitions that classification is a set of descriptive terms describing features of the carcass that are useful as guidelines to those involved in the production, trading and consumption of carcasses, whereas grading is the placing of different values on carcasses for pricing purposes, depending on the market and requirements of traders and consumers. The literature shows that the criteria used in grading systems rank carcasses fairly accurately according to expected eating experience of the loin muscles but not of higher connective tissue cuts of the hind and fore quarter. Criteria used in classification systems give limited descriptions of the quality related characteristics of the carcass. Only the Meat Standards Australia (MSA) cuts based grading system of Australia seeks to define or predict consumer satisfaction with a cooked meal for each cut of the carcass. Its success is based on a palatability assured critical control point (PACCP) approach to satisfy the consumer. However, MSA requires high technical skills, a well organised infrastructure and proper traceability, high level of integrity from different role players and could be very costly, involving high additional personnel cost. The South African classification system should probably focus on distinguishing between young feedlot and somewhat more mature pasture animals with different criteria within each sub category to describe the variation in product quality. Correct pre-slaughter and slaughter management (stress, weight, chilling rate, electrical stimulation, post mortem aging) could improve consistency within age group.
DIE GRAFIESE VOORSTELLING VAN STROOMLYNE VAN 'N JOUKOWSKI-PROFIEL MET BEHULP VAN 'N REKENAAR
D. Strydom
Scientia Militaria : South African Journal of Military Studies , 2012, DOI: 10.5787/8-3-777
Abstract: Where in the study of aerodynamics it is often necessary to represent flow patterns graphically, the writer illustrates how a desk calculator with plotting facilities and limited memory space can be used to this end. As an example he supplies a programme which can be used to plot flow patterns round a Joukowski wing profile.
Uncertainty and Sensitivity Analyses of a Pebble Bed HTGR Loss of Cooling Event
Gerhard Strydom
Science and Technology of Nuclear Installations , 2013, DOI: 10.1155/2013/426356
Abstract: The Very High Temperature Reactor Methods Development group at the Idaho National Laboratory identified the need for a defensible and systematic uncertainty and sensitivity approach in 2009. This paper summarizes the results of an uncertainty and sensitivity quantification investigation performed with the SUSA code, utilizing the International Atomic Energy Agency CRP 5 Pebble Bed Modular Reactor benchmark and the INL code suite PEBBED-THERMIX. Eight model input parameters were selected for inclusion in this study, and after the input parameters variations and probability density functions were specified, a total of 800 steady state and depressurized loss of forced cooling (DLOFC) transient PEBBED-THERMIX calculations were performed. The six data sets were statistically analyzed to determine the 5% and 95% DLOFC peak fuel temperature tolerance intervals with 95% confidence levels. It was found that the uncertainties in the decay heat and graphite thermal conductivities were the most significant contributors to the propagated DLOFC peak fuel temperature uncertainty. No significant differences were observed between the results of Simple Random Sampling (SRS) or Latin Hypercube Sampling (LHS) data sets, and use of uniform or normal input parameter distributions also did not lead to any significant differences between these data sets. 1. Introduction Title 10 Part 50 (10 CFR 50.46) of the United States Code of Federal Regulations first allowed “Best Estimate” calculations rather than conservative code models of safety parameters in nuclear power plants in the 1980s, stipulating, however, that uncertainties be identified and quantified [1]. The continued development of High Temperature Gas Cooled Reactors (HTGRs) requires validation and verification of HTGR design and safety models and codes, and the predictive capability of coupled neutronics/thermal-hydraulics and depletion simulations for reactor design and safety analysis can be assessed with sensitivity analysis (SA) and uncertainty analysis (UA) methods. In general, code uncertainty refers to uncertainty in the ability of a computer software product, coupled with a specific model, to accurately describe the actual physical system of interest. The computer model is an integration of the mathematical model, the numerical techniques used to solve those equations, and the representation of the physical model by the input geometry and material specifications. Each element contributes to the total uncertainty in the output parameter of interest, usually referred to as the Figure of Merit (FOM) in nuclear
A profile of personnel who work with retired volunteers at a service centre for elderly persons  [PDF]
Sanet Jansen van Rensburg, Herman Strydom
Advances in Aging Research (AAR) , 2012, DOI: 10.4236/aar.2012.11001
Abstract: This article focuses on a profile of personnel who work with retired volunteers. The data was sourced by using two standardised measuring instrument, interviews, focus groups and observation. The Leadership Qualities Inventory (LQI-S) was used as one standardised measuring instrument. The following elements were measured namely leadership, people-oriented, task-oriented and self-oriented qualities. The Neethling Brain Instrument (NBI) was used as a second standardised instrument. This instru- ment measured the subconscious’ preferences in four quadrants namely analytical (L1), systematic (L2), emotional (R2) and holistic (R1). From the data an empowerment programme was developed for personnel involved at service centres for elderly persons.
Predicting yields of high priced trimmed beef cuts by means of carcass weight and visual assessments of fat cover and conformation
PE Strydom, MF Smith
South African Journal of Animal Science , 2005,
Abstract: The total and individual trimmed meat yield of six hind quarter cuts and one fore quarter cut were estimated for 200 carcasses from animals of mixed origin with regard to breed, sex and feeding regimen. The linear models included carcass weight and visual assessment of fatness and conformation by means of seven fat and five conformation classes. Amount of variation accounted for (R2) was the most favourable for total yield (87.3%) and the least favourable for the rib-eye cut (43.5%). Carcass weight contributed to most of the variation accounted for and had a positive effect on the yield for all the cuts. Fat score and conformation score were significant in the models of all cuts and total yield except for the rump, and contributed at least 10 percentage points to the R2-value for the topside, thick flank, loin, rib-eye and fillet. Fat score had a negative effect on trimmed yield of all cuts except for the loin, which could be attributed to less trimming compared to other cuts. Conformation score had positive effects on the yield of all cuts except for the rump (non significant), fillet and thick flank. Fat score had the largest proportional effect (to size of the cut) on topside and thick flank, which both contain significant fat deposits. Conformation score had the largest proportional effect on the loin and rib-eye, which is probably due to the synergistic effect of fatness and conformation on the conformation score in this region. The accuracy of estimation of total yield for the purpose of awarding premiums to yield categories was considered to be good when the residual standard deviation of the estimated yield was compared with the standard deviation of the trial sample. However, separating cuts into different weight categories was less accurate and varied among cuts, which suggests that more information is needed for more reliable models before accurate individual yields of cuts can be predicted in practice.
Potential groundwater contamination by fluoride from two South African phosphogypsums
MP Motalane, CA Strydom
Water SA , 2004,
Abstract: A study to investigate the fluoride content in two South African phosphogypsums, Kynoch and Omnia, and the potential threat to water sources was undertaken. Kynoch and Omnia phosphogypsums were found to consist of fluoride in the region of 0.12% and 0.03% by mass, respectively. The phosphogypsum samples were mixed with ZnO and anhydrous Na2CO3 and fluxes thereof prepared at 900oC. The cooled melt was dissolved in deionised water and the fluoride content of each sample determined using the ISE method. These unwashed samples were compared with purified phosphogypsum samples, prepared through a leaching process using deionised water, lime or diluted sulphuric acid solutions. The fluoride content for melts of the purified samples was also determined by the ISE method. The amount of fluoride leached from Kynoch and Omnia phosphogypsums when treated with water was 9% and 22% respectively. Lime pretreatment of Kynoch and Omnia phosphogypsums leached out 37% and 6% of fluoride respectively. On the other hand, the diluted sulphuric acid solution leached out in excess of 70% of the original fluoride from both Kynoch and Omnia phosphogypsums. The presence of fluoride, a species of environmental concern, in South African phosphogypsum as indicated in this study, indicates the need to have waste disposal facilities constructed in such a manner that safeguards the environment. The study also indicates that regular monitoring of fluoride in the environment in the vicinity of phosphogypsum waste disposal sites has to be undertaken. Key Words: Fluoride, Chemical gypsum, Phosphogypsum, Impurities WaterSA Vol.30(4) 2004:465-468
University access for social justice: a capabilities perspective
M Wilson-Strydom
South African Journal of Education , 2011,
Abstract: The closely related, but often contradictory, issues of increasing access to university and improving students’ chances of success in their university studies have been and continue to be an important research focus within higher education studies and policy in South Africa and beyond. More recently, the challenge of underpreparedness of students entering university has gained prominence as universities struggle to increase their throughput rates. It can be argued that increasing access, without increasing chances of success, is becoming a new form of social exclusion within higher education. This paper proposes that approaching issues of access from a capabilities perspective (as developed by Amartya Sen) provides a means of fostering access for social justice and countering access that leads to social exclusion. As such, this is a theoretical paper building on existing work on the capabilities approach within education to argue that the notion of capabilities provides a useful theoretical and conceptual framework for understanding the complexities of meaningful access to university in a deeply divided society like South Africa.
Developing a predictive model of subjective organisational culture
Annalie Strydom,Gert Roodt
South African Journal of Industrial Psychology , 2006, DOI: 10.4102/sajip.v32i4.244
Abstract: The objective of this theory development study was to propose a predictive model of subjectively perceived organisational culture with biographic variables, job satisfaction and personality variables as predictors. A countrywide sample of convenience drawn from a population of nurses (N = 3456) of a private healthcare service provider in South Africa yielded 713 completed questionnaires (response rate = 21%) that were obtained in multiple sessions. Goal directedness, a dimension of organisational culture, was significantly positively related to all three measures of satisfaction (imposed personal demands, extrinsic satisfaction and intrinsic satisfaction), while internal climate was significantly negatively related to the three satisfaction dimensions. Other significant findings are reported on.
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