23 research outputs found

    A critical analysis of organisational justice in the South African financial service industry

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    Organisational justice has captured the interest of scholars in recent years since it is associated with the perceptions and reactions of an individual, to the presence of fairness in an organisation. It thus captures what an individual feel or evaluates to be, morally correct rather than viewing it to be something prescriptive. This study was aimed at investigating the extent of organisational justice on organisational citizenship behaviour, ethical behaviour and employee retention in the South African financial services industry. A hypothetical model and measuring instrument was developed in order to investigate factors that may influence the organisational justice in the financial services industry. Six independent variables (trustworthiness of management, employee engagement, reward system, organisational transparency, two-way communication and organisational climate) were identified as variables that have the potential to influence organisational justice (mediating variable). It was also hypothesised that organisational justice) has the potential to affect the dependent variables (organisational citizenship behaviour, ethical behaviour and employee retention). Furthermore, nine null-hypotheses were developed to test the relationship between independent, mediating and dependent variables. All these variables were clearly defined and operationalised with various items that were obtained from other measuring instruments or self-developed items. A quantitative research approach followed. This study made use of the non-probability sampling technique, specifically convenient and judgemental sampling, as there is no data base of financial services firms available in South Africa. A purposive sample of 800 respondents was drawn from four provinces in South Africa. Factor and regression analyses were used to test the significance of the relationship between the various independent and dependent variables. The mediating variable of organisational justice was viewed by respondents as a two-dimensional construct, namely procedural-interactional justice and distributive justice. Consequently, intrinsic rewards, extrinsic rewards, organisational transparency and organisational climate were identified as independent variables that could have an impact on the procedural-interactional justice to predict organisational citizenship behaviour and reputable employee retention in the financial services industry. No relationships were identified between trustworthiness of management and employee engagement and procedural-interactional justice. The independent variables, trustworthiness of management, extrinsic rewards and organisational climate, could have an impact on distributive justice to predict organisational citizenship behaviour and reputable employee retention in the financial services industry. No relationships were identified between employee engagement, intrinsic rewards, organisational transparency and distributive justice. The findings of this study have contributed to the body of knowledge in the financial services literature in South Africa, by developing a theoretical model and a measuring instrument of organisational justice in the financial services industry. The antecedents of organisational justice in the financial services industry are not well documented in literature and findings of this study could thus contribute towards closing this gap in literature. The findings of this study could also inform policy formulation to assist with the implementation of organisational justice programmes in the financial services industry. This study provided useful and very practical guidelines to organisations in order to ensure the effective strategising and management of OJ that could enhance their local and global competitiveness and long-term survival

    Barriers and reasons for exercise of rural and urban overweight and obese populations in Buffalo City Metropolitan Municipality, Eastern Cape

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    It is documented that obesity is highly prevalent across rural and urban groups in industrialised and underdeveloped countries. This problem is an alarming issue as community members remain unsure about avoiding risking their health. Various health surveys reveal that obesity has increased among communities in the Buffalo City Metro Municipality in the Eastern Cape, and it has consequently made communities vulnerable to non-communicable diseases. The researcher explored factors and barriers of exercise for rural and urban obese populations in Buffalo City Metropolitan Municipality, Eastern Cape. This study was descriptive and explorative, utilising a questionnaire for gathering information. A purposive sample of 80 members from the two selected communities completed the questionnaire. A factor analysis was performed to identify factors that motivate physical activity and barriers to physical activity. It was discovered that all evaluated members were fully aware of the harmful repercussions of being overweight or obese. Nevertheless, only a tiny percentage of those who took part in the study decided to live a healthier lifestyle because of their obesity. Constructive motivating factors included increasing their self-image, enhancing their wellbeing, and getting highly involved in active and regular exercise. Negative motivators included finding it challenging to fit into old clothes and the worry of developing obesity-related diseases. Respondents noted the following impediments in regular exercises and physical activities; African cultural values, limited operational hours of physical activity facilities, insufficient time, and a lack of enthusiasm.Thesis (MPhil) -- Faculty of Science and Agriculture, 202

    Barriers and reasons for exercise of rural and urban overweight and obese populations in Buffalo City Metropolitan Municipality, Eastern Cape

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    It is documented that obesity is highly prevalent across rural and urban groups in industrialised and underdeveloped countries. This problem is an alarming issue as community members remain unsure about avoiding risking their health. Various health surveys reveal that obesity has increased among communities in the Buffalo City Metro Municipality in the Eastern Cape, and it has consequently made communities vulnerable to non-communicable diseases. The researcher explored factors and barriers of exercise for rural and urban obese populations in Buffalo City Metropolitan Municipality, Eastern Cape. This study was descriptive and explorative, utilising a questionnaire for gathering information. A purposive sample of 80 members from the two selected communities completed the questionnaire. A factor analysis was performed to identify factors that motivate physical activity and barriers to physical activity. It was discovered that all evaluated members were fully aware of the harmful repercussions of being overweight or obese. Nevertheless, only a tiny percentage of those who took part in the study decided to live a healthier lifestyle because of their obesity. Constructive motivating factors included increasing their self-image, enhancing their wellbeing, and getting highly involved in active and regular exercise. Negative motivators included finding it challenging to fit into old clothes and the worry of developing obesity-related diseases. Respondents noted the following impediments in regular exercises and physical activities; African cultural values, limited operational hours of physical activity facilities, insufficient time, and a lack of enthusiasm.Thesis (MPhil) -- Faculty of Science and Agriculture, 202

    Women's knowledge and attitudes towards discontinuation of the Long-acting reversible contraceptive (Implanon) in Buffalo City Municipality, South Africa

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    Unintended pregnancy remains a public health concern worldwide despite the availability of many contraceptives options. The South Africa Government introduced Implanon —a Long-acting Reversible Device— with aim to cost effectively prevent unplanned pregnancy. There are concerns that the implementation of this contraceptive option was without prior piloting to test for level of acceptance and attitude towards this contraception. Also, there is paucity of evidence on knowledge of women and their attitude to implanon as well as duration of use and reasons for discontinuation of implanon in South Africa. The present study address this gap by assessing the women’s knowledge of and attitude to implanon as well as reasons for implanon discontinuation in Buffalo City Municipality in South Africa. This prospective observational study administered a pre-validated questionnaire to 189 women who had removed implanon in the reproductive health clinic in one regional hospital and a primary health centre in Buffalo City Municipality. Descriptive statistics were used to analysis the study data. The average duration for implanon use among the participants was 11.2 months. Most participants had poor knowledge of implanon and implanon knowledge was significantly associated was with age. Most participants opined that implanon use is associated with heavy bleeding (60.7), irregular frequent bleeding (84.3percent), and weight gain (67percent). The main reason for implanon discontinuation was its side effects (71.3 percent). Other reasons for discontinuation of implanon are poor or wrong positioning (3.2percent), want to become pregnant (4.3percent). Some participants discontinued implanon because they were on treatment; 24 participants on ARV drug, one on antipsychotic drugs, and one on TB drugs. Experience of heavy bleeding (39.9percent) was the most stated side of implanon leading to implanon discontinuation. The study concluded that women, even though adopted implanon, lack knowledge of implanon mechanism of action and side effects. Poor knowledge of implanon side effects could explain its early discontinuation among women in South Africa. Provider should prioritise comprehensive counselling of clients on implanon side effects and mechanism of action in order to realise the benefit of implanon in this population

    Перешкоди та причини для занять фізичними вправами сільським і міським населенням із надмірною вагою в Буффало-Cіті (Східна Капська провінція)

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    This study explored factors and barriers to exercise for rural and urban obese populations in Buffalo City Metropolitan Municipality, Eastern Cape. A purposive sample of 80 members from the two selected communities completed the questionnaire. A factor analysis was performed to identify factors that motivate physical activity and barriers to physical activity. Constructive motivating factors included increasing their self-image, enhancing their wellbeing, and getting highly involved in active and regular exercise. Negative motivators included finding it challenging to fit into old clothes and the worry of developing obesity-related diseases. Respondents noted the following impediments to regular exercises and physical activities; African cultural values, limited operational hours of physical activity facilities, insufficient time, and a lack of enthusiasm

    Microbiology 1

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    Exam paper for second semester Microbiology (National Diploma in Biotechnology And Food Technology

    Testing Monod : growth rate as a function of glucose concentration in Saccharomyces cerevisiae

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    Thesis (MSc)--University of Stellenbosch, 2004.ENGLISH ABSTRACT: The complexity of microbial systems has presented serious obstacles to the quantification of fermentation processes. Using computer modelling techniques progress has been made in monitoring, controlling and optimising microbial systems using material balancing techniques and empirical process models. The Monod equation is among the most commonly used models and is based on empirical findings with no mechanistic basis. Monod presents a simple model to describe the growth of a cell in a defined nutrient environment. The Monod equation is mathematically analogous to the formula that was proposed by Michaelis and Menten to describe enzyme kinetics. Both equations describe a hyperbolic function with a half-saturation constant (K_s in the monod equation and K_m in the Michaelis Menten equation) but the meaning of the two saturation constants K_s and K_m is different. In number of studies K_s and K_m are used as if they are equivalent. In contrast to Michaelis-Menten kinetics, which describes a process catalysed by a single enzyme, Monod kinetics describes an overall process involving thousands of enzymes. The Monod equation describes the specific growth rate of a microbial cell as the function of a limiting substrate concentration. The aim of this study was to test this principle, for Saccharomyces cerevisiae VIN13 under glucose limited aerobic chemostat conditions. The VIN13 was observed to follow the Monod description and when compared with other growth kinetic models gave one of the best fits to the data. A functional relationship between the half-saturation constant, K_s, and Michaelis Menten constant, K_m, was there after derived. This was achieved by using metabolic control analysis (MCA) to explain when K_m of the transporter becomes equal to the K_s. Using the deductions obtained from MCA a core kinetic model was then formulated to demonstrate that the K_s can either be smaller, equal or higher than the K_m of the transporter, depending on the flux control distribution in the model.AFRIKAANSE OPSOMMING: Die kwantifisering van fermentasieprosesse word ernstig belemmer deur die kompleksiteit van mikrobiale sisteme. Deur gebruik te maak van rekenaar-ondersteunde modelleringstechnieke vir die opstelling van massa balans vergelykings en empiriese prosesmodelle is vordering gemaak in die waarneming, beheer en optimalisering van mikrobiale sisteme. Die Monod vergelyking is een van die mees gebruikte groeimodelle en is gebaseer op empiriese bevindings - die model het nie ‘n meganistiese grondslag nie. Die Monod vergelyking is wiskundig ekwivalent aan die vergelyking wat opgestel is deur Michaelis en Menten vir die beskrywing van ensiemkinetika. Beide vergelykings beskryf ‘n hyperboliese kurwe met ‘n konstante wat die halfversadigingswaarde aangee vir substraat (Ks in die Monod vergelyking en Km in die Michaelis-Menten vergelyking), maar die betekenis van die twee versadigingskonstantes is verskillend. In ‘n aantal studies word die Ks en Km waardes gebruik asof hulle gelyk is aan mekaar. In teenstelling met die Michaelis- Menten kinetika wat ‘n enkel ensiem-gekataliseerde reaksie beskryf, beskryf die Monod vergelyking ‘n proses wat duisende ensieme behels. Die Monod vergelyking beskryf die spesifieke groeitempo van ‘n bakteriële sel as ‘n funksie van die beperkende substraatkonsentrasie. Die doel van hierdie studie was om hierdie beginsel te toets vir Saccharomyces cerevisiae VIN13 wat onder glukose beperkte, aerobiese kondisies in ‘n chemostat gekweek word. Die VIN13 groei kon goed beskryf word met die Monod model, wat in vergelyking met ander groeimodelle een van die beste passings vir die meetpunte het gegee. Vervolgens is ‘n funksionele verwantskap afgelei tussen Ks en Km; deur gebruik te maak van metabole kontrole analise (MCA) kon verduidelik word wanneer die Ks gelyk is aan die Km van die transporter vir die beperkende substraat. Deur gebruik te maak van die MCA analise is ‘n eenvoudige kinetiese model opgestel om aan te toon dat die Ks kleiner, gelyk aan of groter kan wees as die Km van die transporter, afhanklik van die fluksie-kontrole verdeling in die model

    Bio-refining of crude oil using microorganisms isolated from petroleum refinery waste water

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    M.Tech. (Biotechnology)Abstract: The petroleum industry contributes significantly in greenhouse gas (GHG) emissions such as carbon dioxide which amounts to 97.67% of the total GHG emission during production while methane contributes about 2.25% and nitrous oxide contributes about 0.08%. Greenhouse gases are a major cause for drastic climate changes facing the world today. The effects of climate change are quite visible as the world is experiencing an increase in the average global temperature, accelerated melting of icebergs during summer and unusual precipitation patterns. These effects of climate change may affect the ecosystems as their effects are life threating. The aim of this study was to isolate and identify microorganisms that inhabit petroleum refinery waste water and to assess their ability to hydrolyse complex hydrocarbons present in crude oil to simpler hydrocarbons found in refined petroleum. Five bacterial strains were isolated using serial dilutions, spread and streaked plate techniques. Colonies were selected based on colony morphology and Gram stain characteristics. Characterization of bacteria was accomplished by 16S rRNA gene sequencing. According to sequencing data, the isolates were identified as Bacillus thuringiensis, Staphylococcus warneri, Citrobacter amalonaticus, Acinetobacter tandoii and Bacillus sp. These microorganisms were inoculated in minimal salt media containing 5% of crude oil at pH 7 and temperature 30oC at 140 rpm in a shaking incubator in order to study microbial degradation patterns.. The biodegradation studies were carried over a period of five days and a volume of 1mL of sample was aseptically drawn from the flasks on each day of the incubation period. Bacterial cells were removed using 0.22 μm filters. The breakdown products of crude oil were solubilized by adding 1ml of chloroform into 1mL of the sample. Biodegradation products were analysed by GCxGC-ToF-MS and show that all the isolates were capable of hydrolysing the crude oil. A. tandoii was the most efficient microorganism amongst the 4 isolates as it was the only isolate that was able to transform high molecular weight hydrocarbons (C30 and above) and produced significant amounts of new compounds whereas C. amalonaticus and S. warneri could only transform short and medium chain hydrocarbons (C1-C20), B. thuringiensis was able to transform compounds with chain lengths ranging between C1 and C30. From these observations A. tandoii and B. thuringiensis would be more applicable in bio-refining of crude oil as they are able to transform medium and heavy molecular weight hydrocarbons into short chain hydrocarbons which are normally found in refined petroleum hydrocarbons such as gasoline, kerosene and diesel fuel

    Labour Relations & Law 11: LRL 2110

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    Examination on Labour Relations & Law 11: LRL2110, Nov 201

    Assessment of knowledge, attitudes, practices and the prevalence of intestinal parasites in Sarah Baartman District, Eastern Cape

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    ntestinal parasites also known as parasitic worms are one of the common water, soil and feacal transmitted infections of public importance in the world. This study evaluated the Knowledge, Attitudes and Practices (KAP) of public workers comprising EPWP and CWP general workers on intestinal parasites in a selected municipality in the study area . Additionally, using secondary data, the researcher established the prevalence of intestinal parasites in Sarah Baartman District Municipality (SBDM) from 2012 to 2020. Method: The study made use of a quantitative, cross-sectional research design resembling a study by S.D. Hambury .A structured questionnaire, closed-ended, telephonically-administered questionnaire was used to collect data from 160 Expanded Public Works Programme (EPWP) and Community Work Programme (CWP) general workers. Data on the prevalence was obtained from the SBDM National Health Laboratory Service (NHLS). Data was analysed using both inferential and descriptive statistics using SPSS software version 16.1, inferential statistics tests used were Chi2 square tests and p-value tests. Descriptive statistic tests used included frequency distributions, percentage, cumulative percent, and valid percent. Results: The participants’ overall awareness, attitudes and practices of the study were poor, 64.4% of the study participants had the correct knowledge about intestinal parasite infections. The age of study participants and who the participants thought was at risk of being infected by intestinal parasites had a non significant relationship (p>0.05). Gender and the responses to who is at risk of getting infected with intestinal parasites had a statistically significant (p<0.05) relationship. Intestinal parasite prevalence from 2012 to 2020 in SBDM was 46.37% which means it was close to half of the sampled population. Males had the highest prevalence as compared to females, with a prevalence of 53.1% xvi in males and 46.9% in females. The highest disease infection was found between ages one and six years. Conclusion: The researcher concluded that the overall awareness, attitudes and practices on intestinal parasites in SBDM were poor. The intestinal parasites present in SBDM were Cytoisospora belli (35.4%) and Giardia lamblia (35.4%), Ascaris lumbricoides (17.7%), Trichuris trichiura (3%), and Taenia species (2%). The study also revealed that the prevalence of intestinal parasites was low from 2012 to 2020. Recommendations were made with an emphasis on education to increase disease prevention and control awareness.Thesis (Ma) -- Faculty of Health Science, 202
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