Towards the two-way symmetrical communication model: the use of social media to create dialogue around brands
- Authors: Matthee, Christelle
- Date: 2011
- Subjects: Social media , Public relations
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8385 , http://hdl.handle.net/10948/1370 , Social media , Public relations
- Description: Social media has radically altered today's media landscape, and presents public relations practitioners with new possibilities and opportunities to promote their companies. Social media enables public relations to observe in order to find out what people need; what content they are looking for; and how your company can help them. However, will engaging in online conversations give an organisation‘s consumers a voice? Past PR models illustrate how methods of communication was established and used in the past. However, the Grunig and Hunt two-way symmetrical model creates the possibility of two-way communication (dialogue) between consumer and organisation in which the power relations are equal. By applying Web 2.0 (social media) to these models, one can explore new ways of two-way communication. Finally by applying these elements to each other, a case study can be created to prove if social media can be used to create a dialogue between consumer and organization.
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- Date Issued: 2011
Traditional, complementary and alternative medicine use in HIV-positive patients
- Authors: Lunat, Imran
- Date: 2011
- Subjects: HIV infections -- Alternative treatment -- South Africa -- Nelson Mandela Metropolitan Municipality
- Language: English
- Type: Thesis , Masters , MPharm
- Identifier: vital:10137 , http://hdl.handle.net/10948/1388 , HIV infections -- Alternative treatment -- South Africa -- Nelson Mandela Metropolitan Municipality
- Description: The standard anti-retroviral drugs (ARVs) used for the treatment of HIV/AIDS have significant side effects resulting in a lack of adherence and the emergence of multidrug resistant viral strains. These drugs are also expensive, making it essential to investigate all alternatives to classical HIV/AIDS treatment. A wide variety of nonconventional medicines are used by patients for the treatment HIV and for symptoms associated with HIV. So long as they are safe and effective, traditional, complementary and alternative medicines (TCAMs) may be considered more advantageous for developing countries as they are relatively cheap, more accessible and widely accepted by local populations. The aim of this study was to determine the prevalence of TCAM use in HIV-positive patients, prior to, and during ARV therapy. The study was exploratory, cross sectional and observational in nature. Participants were selected via convenience sampling from the Nelson Mandela Bay Municipality, and included 244 HIV-positive patients, 29 health care professionals (HCPs) and 30 traditional, complementary and alternative practitioners (TCAMPs). A wide variety of TCAMs were used by the sample population. These medicines were more commonly used by non-ARV patients (36 percent) compared with ARV patients (22 percent). A significant statistical difference in TCAM use between the ARV and non- ARV population was found in relation to education, employment, period of status awareness, patient opinion of personal health and the reasons for TCAM use. Amongst the HCPs, 24 percent recommended TCAM use prior to ARVs, and 55 percent were aware of patients self-prescribing before and during ARV treatment. Amongst the TCAMPs, 90 percent provided a wide range of TCAMs for HIV, with some giving consideration to conventional management. TCAMs are commonly used by HIV-positive patients on ARVs, as well as by those not on ARVs. These medicines are also the preferred form of treatment for those not seeking conventional treatment. TCAMs are widely available and recommended by TCAMPs as well as some HCPs. Due to public health concerns, clinical trials of the widely used TCAMs are crucial in order to establish the safety and efficacy of these medicines in HIV.
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- Date Issued: 2011
Trials and triumphs in public office: the life and work of E J N Mabuza
- Authors: Sarimana, Ashley
- Date: 2011
- Subjects: Mabuza, E J (Enos John), 1939- Public officers -- South Africa South Africa -- Politics and government -- 20th century South Africa -- History -- 20th century South Africa -- Social conditions -- 20th century Homelands (South Africa) -- Politics and government -- 20th century Homelands (South Africa) -- History -- 20th century Homelands (South Africa) -- Social conditions -- 20th century Apartheid -- South Africa South Africa -- Race relations Actor-network theory
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3305 , http://hdl.handle.net/10962/d1003093
- Description: Enos John Nganani Mabuza's life and work is used as a case study to highlight the conceptual and methodological theories and challenges in academic biographical writing regarding history, memory and legacies. This thesis answers the question: Who was Mabuza and what is his place or relevance in South Africa's history? We over-simplify and stereotype people because it is convenient. We judge others but there is no saint without a past or a sinner without a future. Mabuza reconciled with the main liberation movements and moved from a maligned position on the political fringes to a respectable one within the emerging black economic elite. History, like reference systems and values is not calcified or static. It is prone to interpretation, adaptation, modification, invention, manipulation, decomposition and re-composition. Bourdieu's habitus-field analysis, theory or logic of practice, notions of capital (symbolic, political, social, cultural and economic) is used together with Latour's actor-network theory as the basis of analysis of the social contracts and trust bonds that Mabuza was able to create and which enabled him to navigate South Africa's socio-political and economic milieus during apartheid and the transition in the early 1990s. As people or actors, we believe in the mantra, nothing ventured, nothing gained. We exercise agency and take risks every day. We make choices and those choices have consequences. Mabuza's choices in the fields of education, politics and business had implications for how he is perceived or has been written into history. His choices put notions of identity, citizenship, power, legitimacy, ambition, elite accommodation, class, personal and professional networks, popular struggles, agency and structure under the spotlight. Mabuza's involvement in Bantustan politics, for instance, is contextualised in terms of a historical overview of the unpopular role played by traditional authorities in South Africa before and during colonialism and apartheid. His later foray into the world of business, however, was facilitated in part, by the personal and professional contacts that he made whilst he was in politics and the opportunities which opened up during the country's political transition. Mabuza adapted to changing circumstances and demonstrated a level of versatility which other Bantustan functionaries did not or could not exercise.
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- Date Issued: 2011
Triggers and barriers to youth entrepreneurship in the Eastern Cape South Africa
- Authors: Chindoga, Lynety
- Date: 2011
- Subjects: Youth development -- South Africa , Entrepreneurship -- South Africa -- Eastern Cape , Young adults -- Employment -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/25948 , vital:64636
- Description: To realise the dream of the African Renaissance and a better life for all South Africans, the entrepreneurial energies of all people, including children, should be harnessed to contribute towards economic development, job creation and poverty alleviation. Entrepreneurship creates wealth and results in economic prosperity for a country. However, in South Africa, entrepreneurship still remains a dream yet to be realised. This is supported by the findings of Maas and Herrington (2006), who identified entrepreneurial activity in South Africa to be very weak as evidenced by a low Total Entrepreneurial Activity (TEA) rate. Youths are not engaging in entrepreneurial activity and are making the bulk of the unemployed in South Africa. The primary objective of this study was to investigate the perceived triggers and barriers to youth entrepreneurship in South Africa. Two sets of questionnaires were self- administered to high school students and university students. The respondents which consisted of three hundred and twenty three university students and two hundred and fifty six high school students, were selected using simple random sampling method. Five point Likert scale was used to measure the responses. Descriptive as well as inferential statistics were used to analyse the data. The results indicated that youth entrepreneurial intention is low in South Africa. The results also indicated that students perceived mainly extrinsic rewards, market opportunities as well as intrinsic rewards as the three top triggers towards entrepreneurial intention. Independence/autonomy and capital were also regarded as triggers to entrepreneurial intentions. The barriers to youth entrepreneurship included lack of capital, skill and support as well as lack of market opportunities and risk. The study recommends that in order to encourage youth entrepreneurial intentions, government and all stakeholders should ensure that all the perceived triggers are made available. In addition, the barriers to youth entrepreneurship should be minimised. , Thesis (MCom) -- Faculty of Management and Commerce, 2011
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- Date Issued: 2011
Trophic ecology of zooplankton at a frontal transition zone: fatty acid signatures at the subtropical convergence, Southern Ocean
- Authors: Richoux, Nicole B
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/458033 , vital:75711 , xlink:href="https://doi.org/10.1093/plankt/fbq132"
- Description: Regional variations in fatty acid composition were assessed in zooplankton communities situated immediately north and south of the subtropical convergence (STC), where warm (maximum 21°C) nutrient-poor waters of the southwest Indian Ocean converge with cool (minimum 11°C) nutrient-rich subantarctic waters of the Southern Ocean. I hypothesized that food web structures differ from north to south based on average spatial differences in primary productivity, and that zooplankton in the more productive region show enhanced herbivorous feeding. Several taxonomic groups including euphausiids showed differences in their fatty acid signatures from north to south, indicating the existence of measurable within- and among-species differences in trophic relationships between the two communities, presumably stemming from variations in food quality and availability. The indices 22:6ω3/20:5ω3, 18:1ω9/18:1ω7 and Σω3/Σω6 indicated that carnivory was the dominant feeding mode in the north, whereas herbivory was more prevalent in the south, a pattern that was not detected in the same region using stable isotope ratios. Such conflicting results substantiate the importance of utilizing more than one method to investigate feeding relationships in aquatic systems. Fatty acid profiles of the amphipod Themisto gaudichaudii revealed some distinct herbivory markers, indicating more complex feeding habits by this important pelagic species than previously reported. My findings shed new light on the regional variations in zooplankton diet and food web dynamics in a poorly understood but critically important frontal zone bordering the Southern Ocean.
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- Date Issued: 2011
Trophodynamics of the benthic and hyperbenthic communities inhabiting the Sub-Antarctic Prince Edward Islands : stable isotope and fatty acid signatures
- Authors: Allan, Elizabeth Louise
- Date: 2011
- Subjects: Benthos -- Prince Edward Islands Benthos -- Feeding and feeds -- Prince Edward Islands Benthos -- Nutrition -- Prince Edward Islands Prince Edward Islands
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5806 , http://hdl.handle.net/10962/d1006350
- Description: The aim of this study was to investigate spatial changes in the trophic and energy pathways of the benthic community in the shallow shelf waters of the sub-Antarctic Prince Edward Islands (PEI). A combination of stable isotope and fatty acid analyses were used to provide a time-integrated view of the assimilated feeding history of selected components of the PEI benthic community. This study forms part of the larger project entitled “Variability in the Southern Ocean ecosystems” and is a contribution to the South African National Antarctic Programme (SANAP). During austral autumn 2009, benthic specimens were collected from 10 stations (from depths of 70 to 295 m) in different regions around the PEI: inter-island shelf (upstream, between and downstream of the islands) and nearshore. Historical data were combined with new data collected during 2009 to assess the long-term trends in the feeding ecology of the benthos in the region of the islands. The stable isotope and fatty acid signatures of the benthic suspension- and deposit-feeding organisms generated during this study suggested that these two communities incorporated both phytoplankton and kelp in their diets. Stable isotope, and to a lesser extent fatty acid signatures, indicated that kelp contributed more to the diets of those organisms in close proximity to the kelp beds (nearshore stations) than those from the inter-island region. Overall, however, pelagic phytoplankton was the dominant food source in the diets of all organisms, even for those living near the kelp beds. Notable exceptions were the sponges and bryozoans, in which kelp and phytoplankton contributed similar proportions to their diets, most likely resulting from a size restricted feeding mode. There were, therefore, no distinct spatial differences in the importance of the various food sources. However, fatty acid compositional data indicated increased food quality between and within the lee of the islands compared to upstream. The organisms collected upstream of the PEI had substantially lower quantities of total fatty acids (TFAs) than organisms of the same species collected from nearshore, open shelf or downstream stations. The increased food quality between and within the lee of the islands was likely a result of the “island mass effect”, which reflects increased phytoplankton concentrations at the PEI. The fatty acid profiles of hyperbenthic shrimp Nauticaris marionis, a key species in the PEI ecosystem, revealed no distinct ontogenetic or spatial patterns. This result is in contrast to the stable isotope analyses, which detected both spatial and ontogenetic differences in the diet of the shrimp. Nearshore shrimp were more ₁₃C-enriched than those from the inter-island region, suggesting increased kelp entering the food web within these regions. In addition, the shrimps demonstrated enrichment in δ₁₃C and δ₁₅N signatures with an increase in size, resulting in a relatively distinct separation of size classes, thus reflecting niche separation through their diets. The fatty acid profiles revealed that the shrimp all contained large proportions of polyunsaturated fatty acids (PUFAs) and essential fatty acids (EFAs), indicating that the quality of food consumed was similar among size class and region despite the niche separation and variation in carbon sources utilised. In addition, diatom and dinoflagellate fatty acids (20:5ω3 and 22:6ω3, respectively) occurred in the highest proportions in N. marionis, highlighting the importance of phytoplankton (indirectly) in their diet. These results represent strong evidence that phytoplankton is an importance food source in the PEI ecosystem. The temporal investigation of isotope signatures in the benthos at the PEI indicated that N. marionis demonstrated an overall depletion in δ₁₃C signatures over the period of 1984 to 2009 (nearshore: -2.55 ‰, inter-island: -2.32 ‰). Overall, the benthic community showed similar depletions in δ13C signatures (from -1.96 to -4.70 ‰), suggesting that shifts have occurred in the carbon signatures at the base of the food web. The depletion in δ₁₃C signatures of the benthos at the PEI most likely reflects increased contributions of smaller slow growing phytoplankton cells (more depleted signatures than large fast growing cells) in the diets of these organisms over time. These diet shifts, in turn, suggest a decrease in productivity has occurred at the islands, likely due to a decreased frequency and intensity of the “island mass effect”. Decreased phytoplankton productivity at the PEI likely results from the southward shift in the average position of the sub-Antarctic Front (SAF), most likely in response to climate change, which in turn promotes flow-through conditions rather than retention at the PEI.
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- Date Issued: 2011
Trust building strategies to enhance collective bargaining processes in organisations
- Authors: Ngalo, Osmond Tolo
- Date: 2011
- Subjects: Trust , Collective bargaining
- Language: English
- Type: Thesis , Doctoral , DTech
- Identifier: vital:9398 , http://hdl.handle.net/10948/1312 , Trust , Collective bargaining
- Description: The main research problem in this study was to identify what trust-building strategies can be utilised by organisations to enhance collective bargaining processes. To achieve this objective a theoretical Institutional Arrangements-Based Model of trust-building was conceptualised, developed and presented in Chapter 5. The presentation of this model was the culmination of the research design phases outlined below: -The first phase consisted of a literature survey undertaken to discover the nature and dynamics of the concept "trust". -The second phase consisted of surveying the literature attempting to understand the nature of the collective bargaining process, its elements and types and the environmental factors that tend to impinge on it. -The final phase of the literature survey focused on various trust-building strategies, theories and models that can be utilised by organisations to ii enhance collective bargaining processes. Trust is generally acknowledged as a necessary requirement for effective and successful workplace relationships. Because of this factor it is crucial that South African employer-employee relationships are improved in a conscious and sustainable way in order for our businesses to remain competitive in the face of global competition. With this reality in mind there is still much in the South African labour relations environment that fosters conflict. One of the primary factors that impinge on trust in employer-employee relations in South Africa is the previous government‘s divisive and racist apartheid policies. These policies have resulted in serious structural imbalances in the economy, the skewed distribution of wealth and the general scarcity of resources to address these attendant challenges. Finnemore and van Rensburg (2002, p. 36) surveys the current labour relations scenario and comments about the extent to which it has been severely affected by apartheid. Some of its appalling outcomes are: racial divisions between skilled and unskilled workers, apartheid wage gaps, poorly educated workers, dictatorial management styles and a lack of protection for the most vulnerable workers. As revealed in this research study there are still widely divergent views at the workplace regarding the nature and levels of trust that are prevalent. The overwhelming view, however, is that there is, generally, a lack of trust between managerial and employee collective bargaining teams. This lack of trust which is evident between employer and employee parties will tend to result in collective bargaining processes being embarked upon in a climate imbued with the negative spirit of distrust. The recommended Institutional Arrangements-Based Model of trust-building advocates for a process of trust-building prior to any collective bargaining initiatives. This process, as depicted in the elements of the recommended model, needs to begin with phases which will focus on frame-alignment and the identification of all sources of distrust between the parties. These prescribed sessions seek to culminate in a common understanding, between the contesting parties, of their real divergent issues and concerns as well as their existing commonalities. The next phases of the recommended model entail the parties, jointly, developing proposals and policies that in the short and long term will aim at the resolution of the identified sources of distrust and thereby reduce the psychological distance between them. The final phase of the model entails the implementation of joint problem–solving resolutions and the development of appropriate policies i.e. institutional arrangements, to deal with all conflict-prone areas of the business operations. Simultaneously, there needs to be continuous evaluation and monitoring of organisational trust and the "agreed to" trust-building strategies to ensure that distrust is reduced or eliminated in the long term, allowing the organisation and the individual employees to perform at their optimum in order to achieve their common goals.
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- Date Issued: 2011
Unitarity constraints on the ratio of shear viscosity to entropy density in higher derivative gravity
- Authors: Brustein, R , Medved, A J M
- Date: 2011
- Language: English
- Type: text , Article
- Identifier: vital:6815 , http://hdl.handle.net/10962/d1004325
- Description: We discuss corrections to the ratio of shear viscosity to entropy density η/s in higher-derivative gravity theories. Generically, these theories contain ghost modes with Planck-scale masses. Motivated by general considerations about unitarity, we propose new boundary conditions for the equations of motion of the graviton perturbations that force the amplitude of the ghosts modes to vanish. We analyze explicitly four-derivative perturbative corrections to Einstein gravity which generically lead to four-derivative equations of motion, compare our choice of boundary conditions to previous proposals and show that, with our new prescription, the ratio η/s remains at the Einstein-gravity value of 1/4π to leading order in the corrections. It is argued that, when the new boundary conditions are imposed on six and higher-derivative equations of motion, η/s can only increase from the Einstein-gravity value. We also recall some general arguments that support the validity of our results to all orders in the strength of the corrections to Einstein gravity. We then discuss the particular case of Gauss-Bonnet gravity, for which the equations of motion are only of two-derivative order and the value of η/s can decrease below 1/4π when treated in a nonperturbative way. Our findings provide further evidence for the validity of the KSS bound for theories that can be viewed as perturbative corrections to Einstein gravity.
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- Date Issued: 2011
United Nations mediation in Africa: a case study of the Bakassi conflict intervention, 2002-2006
- Authors: Kenmoe Nougue, Plamielle
- Date: 2011
- Subjects: United Nations -- Africa , Intervention (International law) -- Case studies , United Nations -- Peacekeeping forces -- Africa -- History , Conflict management -- Africa -- Case studies , Bakasi Peninsula (Cameroon) -- Politics and government -- Case studies
- Language: English
- Type: Thesis , Masters , MPhil
- Identifier: vital:8186 , http://hdl.handle.net/10948/1431 , United Nations -- Africa , Intervention (International law) -- Case studies , United Nations -- Peacekeeping forces -- Africa -- History , Conflict management -- Africa -- Case studies , Bakasi Peninsula (Cameroon) -- Politics and government -- Case studies
- Description: Just as conflict is part of everyday life, mediation can and is practiced everyday and everywhere. It is a way of reaching decisions in a cooperative, non-hierarchical way, allowing for clear and open communication processes. Conflicts can be resolved in a formal manner through courts, arbitration, ombudspeople, diplomacy and mediation, or an informal manner through friends, colleagues, religious and community leaders, and dialogue. The way in which people resolve their disputes has an impact on how societies and institutions are governed. The war in Bakassi has taken its toll on the people of that area for several years now and has witnessed people from Bakassi facing some of the worst effects of armed conflict known to man. This study investigated the use of international mediation in the management of intractable conflict with a specific case study on the Bakassi peninsula conflict between Cameroon and Nigeria. It focused on the mediation process as a conflict management technique in relation to the international relations theories which has been used as a basis for conflict resolution practices. The researcher conducted a document review, content analysis on selected documents and this was supported by strategic interviews. The findings as well as the researcher‘s recommendations are discussed in the study in order to assist the future work of conflict management specialists and other stakeholders who have devoted their efforts to the recovery of areas emerging from conflict.
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- Date Issued: 2011
Universal approximation properties of feedforward artificial neural networks.
- Authors: Redpath, Stuart Frederick
- Date: 2011
- Subjects: Neural networks (Computer science) , Artificial intelligence -- Biological applications , Functional analysis , Weierstrass-Stone Theorem , Banach-Hahn theorem
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5430 , http://hdl.handle.net/10962/d1015869
- Description: In this thesis we summarise several results in the literature which show the approximation capabilities of multilayer feedforward artificial neural networks. We show that multilayer feedforward artificial neural networks are capable of approximating continuous and measurable functions from Rn to R to any degree of accuracy under certain conditions. In particular making use of the Stone-Weierstrass and Hahn-Banach theorems, we show that a multilayer feedforward artificial neural network can approximate any continuous function to any degree of accuracy, by using either an arbitrary squashing function or any continuous sigmoidal function for activation. Making use of the Stone-Weirstrass Theorem again, we extend these approximation capabilities of multilayer feedforward artificial neural networks to the space of measurable functions under any probability measure.
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- Date Issued: 2011
Uphononongo lokuchubeka kwezimo zabalinganiswa kwiincwadi ezichongiweyo zedrama zesiXhosa
- Authors: Mvanyashe, Andiswa
- Date: 2011
- Subjects: Xhosa drama , Characters and characteristics in literature
- Language: Xhosa
- Type: Thesis , Masters , MA
- Identifier: vital:8450 , http://hdl.handle.net/10948/1409 , Xhosa drama , Characters and characteristics in literature
- Description: Le ngxoxo iza kuthetha ngengcingane yokuchubeka. Phantsi kwengcingane yokuchubeka kuza kuthi kuxoxwe ngezi zinto ziladelayo: ukuchubeka lungileyo kunye nokuchubeka gwenxa, ubuso (imvakalelo), izaci zokuchubeka, ukuchubeka nesini kunye nokuchubeka namandla okanye igunya. Ezi zihloko zingaphantsi ziza kubonakaliswa phantsi kwecandelo lesibini ukuya kwelesine ze isahluko sesihlanu ibe sesokukuqukumbela. Ukuchubeka kufumaneka phantsi kwezifundo zesoshiyolingwistiki. Ingxoxo iza kuthi iqale icacise ngesoshiyolingwistiki. Ukuchubeka kuphuhla kakuhle xa isithethi sisebenzisa amagama entetho-ntshukumo anje ngokuncoma, ukuhlekisa, ukuxolisa njalo-njalo. Ingxoxo iza kuthi inabe nzulu ngengcingane yentetho-ntshukumo. Iza kuphinda ingene nzulu icacisa igama elinentshukumo ngalinye. Le ngxoxo ithi ijonge kwaye iphendule umbuzo othi ingaba ngoobani abachubekileyo kukho amadoda nabantu ababhinqileyo. Lo mbuzo uthi ukhokhelele ingxoxo ekuxoxeni ngesini. Ingcingane yesini iza kuthi isetyenziswe ekuphenduleni lo mbuzo kwaye iza kucaciswa nzulu. Kuyabonakala okokuba apha ekuchubekeni bakhona abantu abachubeka ngenxa yezizathu ezithile. Izizathu ezifana nokuthobela amagunya, ukoyika lo mntu athetha naye, ukuhlonipha njalo-njalo.
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- Date Issued: 2011
Uphononongo nzulu lokusetyenziswa kolwimi olucengayo ngabalinganiswa kwincwadi ka Z.S. Qangule ethi, "Amaza" neka A.M. Mmango ethi, "Udike noCikizwa"
- Authors: Notshe, Lwandlekazi
- Date: 2011
- Subjects: Xhosa drama , Figures of speech , Persuasion (Psychology) in literature
- Language: Xhosa
- Type: Thesis , Masters , MA
- Identifier: vital:8476 , http://hdl.handle.net/10948/d1012684 , Xhosa drama , Figures of speech , Persuasion (Psychology) in literature
- Description: Olu phando luza kuphendla ubugcisa bokusetyenziswa kwezicengo ekutshintsheni izimvo, iinkolo nokuziphatha kwabantu. Kuza kugxilwa kakhulu kwiinjongo noxinzelelo lwazo kuba zingunozala wezicengo. Kuza kugocwagocwa ‘Amaza’ kaQangule kwakunye no ‘UDike noCikizwa’ kaMmango. Apha kwezi ncwadi kuza kuhlutywa ukuba ulwimi olucengayo luyasetyenziswa ngabantu abantetho isisiXhosa, nokuba imingangatho eyinqobo (values), inkcubeko, nengqeqesho (socialization) zidlala indima enkulu kulwimi olucengayo. Isahluko sokuqala salo msebenzi siza kunika amagqabantshintshi ngolu phando. Esi sahluko siqulathe: Intshayelelo; Iingxaki zophando; Iinjongo zophando; Ukubaluleka kolu phando; Okusele kubhaliwe ngezicengo; Ingcaciso magama. Isahluko sesibini siqulathe iingcingane zolwimi olucengayo, abasunguli bazo, nemisebenzi yabo. Isahluko sesithathu siqwalasele ukusetyenziswa kwezicengo kwiincwadi ezichongiweyo. Isahluko sesine sijonge ubugcisa bokusetyenziswa kolwimi olucengayo kwizihlobo nakwiintsapho. Kwalapha, kujongwe nokusetyenziswa kolwimi oluchubekileyo ngamadoda nabafazi, igunya, umyalezo ocalanye kwakunye nokunikezela. Isahluko sesihlanu nesisesokugqibela – sishwankathela iziphumo zophando kukwanikwa neengcebiso.
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- Date Issued: 2011
Use and users of municipal commonage around three small towns in the Eastern Cape, South Africa
- Authors: Davenport, Nicholas A , Shackleton, Charlie M , Gambiza, James
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/181116 , vital:43700 , xlink:href="https://doi.org/10.1016/j.jenvman.2010.11.003"
- Description: Municipal commonages surround many small towns throughout South Africa, and are an integral component of the national land reform programme. But little is known about their extent, use or value, and most appear to have limited or no management or investment. This paper reports on a survey of randomly selected households in three small towns in the Eastern Cape to ascertain the extent and purpose of use of municipal commonages. Between 27% and 70% of urban households used commonage depending on site. Key resources used were fuelwood, medicinal plants, and grazing of livestock. Typically, commonage using households were poorer and less educated than other urban residents, although the profile of users is unique for each town. Given the extensive use of commonage resources, and their contribution to the livelihoods of the poor, local municipalities need to develop and implement sound management strategies that account for all users of commonages, rather than the oft encountered focus on livestock owners and production.
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- Date Issued: 2011
User satisfaction in academic libraries: a case study at Walter Sisulu University, Ibika Campus
- Authors: Cingo, Sindiswa
- Date: 2011
- Subjects: User satisfaction -- Academic libraries
- Language: English
- Type: Thesis , Masters , M Bibl
- Identifier: vital:18419 , http://hdl.handle.net/11260/d1006642
- Description: User satisfaction and library use are multidimensional concepts. The scope of every library as a service institution is to provide satisfaction to its users and to strive continuously for their betterment. The aim of this study is, therefore, to determine the satisfaction of users with library services at the circulation desk at Walter Sisulu University (WSU), Ibika Campus. The specific objectives of the study are as follows: To determine the levels of satisfaction of users, especially at the circulation desk; to determine the reasons for any dissatisfaction expressed by the users; to determine the use of databases by the users, and to determine how the Ibika Campus library is rated in general. In this study, a survey was used to determine the levels of satisfaction of users with library services. Questionnaires were distributed to hundred and twenty users, and ninety users responded to these. From the findings, it was clear that most of the respondents were in general satisfied with the library services at WSU, Ibika Campus. Dissatisfaction was expressed by approximately twenty percent of the respondents, because of various reasons which include library opening hours, noise level, temperature, photocopying facilities, the accuracy of the searches, including the use of OPAC. There were also some suggestions from the respondents that entail more staffing, training, expansion of the library building, twenty-four hour reading room facilities and more cubicles for senior students and staff. The expansion of the library building may reduce the noise level because there will be more space, and that will limit group discussions inside the library. Group discussions will be done outside the library in the suggested twenty-four hours reading room. In one of the recommendations, it is suggested that library management should provide ongoing training for all library staff. This will result in enhancement of services. The training will assist the circulation staff to possess excellent interpersonal skills together with a strong service orientation. Lastly, further research needs to be done on library satisfaction in terms of the problems that have been identified, for example, extension of the library building.
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- Date Issued: 2011
User-interface evaluation metrics for a typical M-Learning application
- Authors: Kantore, Adelin
- Date: 2011
- Subjects: User interfaces (Computer systems) , Mobile communication systems
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9749 , http://hdl.handle.net/10948/1452 , User interfaces (Computer systems) , Mobile communication systems
- Description: Usability is seen as an important aspect for the quality of an M-learning application. Yet very little research has been conducted in this area – particularly in South Africa. Even though the trials of M-learning projects have been witnessed in the country during the last five years, very little is known about the systems that were implemented as regards their usability. Additionally, metrics and measures used in evaluating usability have not been reported. A need exists for relevant metrics to M-learning usability. The primary objective of this work was to propose metrics and measures – for the purpose of evaluating the User-Interfacedesign usability of M-learning application. The research included a literature review of M-learning, as well as the development of metrics and measures based on the Goal Question Metric (GQM) Model. This model has helped provide a reference model and measurements for evaluating the User-InterfaceUsability. A case study was used as a research strategy. An application called Kontax was selected for evaluation by users and expert reviewers. Data-collection methods consisted of User Testing and Heuristics evaluations. Data-gathering instruments included the use of surveys and user- satisfaction questionnaires based on the proposed metrics, task scenarios and expert-reviewed questionnaires based on the proposed metrics; all these instruments were developed. It was found that, although the users thought the system was very interesting, and they wished to hear more about it in the future, the system nevertheless had usability flaws which made it difficult to use. All the users failed to register so that they could use the system; additionally, the system-error messages did not help the users recognize, and recover from an error – leaving the user to simply log out. Help was not adequate, thus making it difficult for first-time users to know what to do when they needed support. The system was also said to have a lot of information presented on its home page, which caused the user to be disoriented. The Kontax application has usability flaws which should be III attended to, in order to improve its usability. The proposed metrics proved to be very useful in evaluating the usability of the tool.
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- Date Issued: 2011
Using information visualization techniques to support web service discovery
- Authors: Beets, Simone
- Date: 2011
- Subjects: Information visualization , Web services , Information visualization -- Computer programs
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10457 , http://hdl.handle.net/10948/1659 , Information visualization , Web services , Information visualization -- Computer programs
- Description: The increasing number of web services published over the Web highlights the need for an effective method for users to find appropriate web services. Existing web service discovery methods do not effectively aid a user in finding suitable web services. The current methods provide textual lists of web services that the user is required to explore and manually evaluate. Thus, these methods lead to time-consuming and ineffective web service discovery. The aim of this research was to investigate using information visualization (IV) techniques to effectively support web service discovery. The node-and-link network IV technique was selected as the most appropriate IV technique to visualize web service collections. A prototype, called SerViz, was developed as a tool for interactive visualization of web service collections incorporating the node-and-link IV technique and an alphabetical list-based technique. SerViz used the Programmable Web web service collection as the sample web service collection. A usability evaluation was conducted to compare these techniques. Ninety percent of participants preferred the network IV technique for visualizing web service collections. The network IV technique was also faster for browsing. Several usability problems were identified with the network IV technique. This motivated a need for implementing an alternative IV technique in SerViz. The node-and-link tree IV technique was selected as it was more structured than the network IV technique. A usability evaluation was conducted to compare the network and tree IV techniques. Participants slightly preferred the tree IV technique as the technique to visualize web service collections. The tree IV technique was faster for browsing the web service collection while the network IV technique was faster for searching and filtering. This research has determined that IV techniques can be used to effectively support web service discovery. Future work will involve using IV techniques to support collaborative web service discovery. Keywords: Web Service Discovery, Information Visualization, Web Service Collections, Information Visualization Techniques.
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- Date Issued: 2011
Using molecules and morphology to infer the phylogenetic relationships and evolutionary history of the Dirini (Nymphalidae: Satyrinae), a tribe of butterflies endemic to Southern Africa
- Authors: Price, Benjamin W , Villet, Martin H , Walton, Shaun M , Barker, Nigel P
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/442397 , vital:73981 , https://doi.org/10.1111/j.1365-3113.2010.00560.x
- Description: The first empirically supported phylogenetic hypothesis of relationships for the southern African endemic butterfly tribe Dirini is presented. Data derived from the morphology and ecology of the adults and immature stages (33 characters), and portions of the mitochondrial gene cytochrome oxidase I (COI) and the nuclear genes elongation factor 1α (EF1α) and wingless (WG) (totalling 1734 bp) were used to infer the relationships of the in‐group genera. An expanded molecular dataset using four genera from the Nymphalini and Satyrini to root the tree, and three genera from the Melanitini to test the monophyly of the tribe, was analysed using parsimony and Bayesian methods. Estimates of divergence times were calculated using two fossil calibrations under a relaxed molecular clock model. The monophyly of the tribe and each in‐group genus were strongly supported. Key findings are the sister‐taxon relationship of Aeropetes and Tarsocera, the apparent simultaneous or nearly simultaneous radiation of four lineages, the polyphyly of the species within Torynesis, and the apparent trans‐Atlantic dispersal of the ancestors of Manataria about 40 Ma. Estimates of divergence times indicate that the tribe has undergone two major radiations since its origin: the first when they left forest habitats in the mid–late Oligocene, shortly after the radiation of the grasses (Poaceae), and the second in the early‐middle Pliocene, coinciding with the aridification of southern Africa and the spread of conditions that favoured C4 grasses over the C3 grasses that dirine larvae prefer to eat. The high species diversity within the tribe appears to be partly a taxonomic artefact that may have resulted from the misinterpretation of climate-related phenotypic variation within extant species. Relocation and breeding experiments should test this hypothesis.
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- Date Issued: 2011
Using multi-touch interaction techniques to support Collaborative Information Retrieval
- Authors: Sams, Ivan
- Date: 2011
- Subjects: Human-computer interaction , Teams in the workplace -- Data processing , Groupware (Computer software) , Interactive computer systems
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10491 , http://hdl.handle.net/10948/d1020156
- Description: Collaborative Information Retrieval (CIR) is a branch of Computer Supported Cooperative Work (CSCW). CIR is the process by which people search for and retrieve information, working together and using documents as data sources. Currently, computer support for CIR is limited to single user systems. Collaboration takes place either with users working at different times or in different locations. Multi-touch interaction has recently seen a rise in prominence owing to a reduction in the cost of the technology and increased frequency of use. Multi-touch surface computing allows multiple users to interact at once around a shared display. The aim of this research was to investigate how multi-touch interaction techniques could be used to support CIR effectively in a co-located environment. An application architecture for CIR systems that incorporates multi-touch interaction techniques was proposed. A prototype, called Co-IMBRA, was developed based on this architecture that used multi-touch interaction techniques to support CIR. This prototype allows multiple users to retrieve information, using the Internet as a shared information space. Documents are represented as visual objects that can be manipulated on the multi-touch surface, as well as rated, annotated and added to folders. A user study was undertaken to evaluate Co-IMBRA and determine whether the multi-touch interaction techniques effectively supported CIR. Fifteen teams of two users each participated in the user study. High task completion rates and low task times showed that the system was effective and efficient. High levels of user satisfaction were reported in the post-test questionnaires. Participants rated the system as highly useful and several commented that it promoted collaboration and that they enjoyed the test. The successful implementation of Co-IMBRA provides evidence that multi-touch interaction techniques can effectively support CIR. The results of the user evaluation also enabled recommendations for future research to be made.
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- Date Issued: 2011
Using social marketing to bridge the gap between systematic conservation planning and implementation at the local government level
- Authors: Wilhelm-Rechmann, Angelika
- Date: 2011
- Subjects: Nature conservation -- South Africa -- Eastern Cape , Land use -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:10603 , http://hdl.handle.net/10948/1550 , Nature conservation -- South Africa -- Eastern Cape , Land use -- South Africa -- Eastern Cape
- Description: The study presented here describes an attempt to bridge the gap between systematic conservation assessment and decision-making for land-use planning in the Eastern Cape province, South Africa. The aim was to investigate how to effectively convince officials concerned with land use planning processes in the local municipal sphere to include conservation priorities meaningfully in their processes. The approach used to reach this aim was social marketing, the use of marketing technologies and concepts to effect behavior changes to further societal good. So far social marketing is not commonly used in the conservation domain; I therefore aimed also at proving the usefulness of this approach for conservation. Following the introduction which provides background to the project and a more detailed summary, Chapter 2 provides a detailed and comprehensive review of the considerations and concepts regarding the use of social marketing in a context geared at protecting nature. The research on the primary target group for this study, officials concerned with land use planning processes in the local municipal sphere is described in Chapter 3. The main outcomes were that land use planners perceive few needs with regards to implementing the incorporation of biodiversity conservation issues in the land use planning process, and that the deficiencies in the land use planning process per se, as well as the lack of recognition in the political sphere (the domain of elected councilors), represent the core barriers to adopting the conservation priorities. I conclude that to effect behavior change towards adoption of conservation priorities the land use planning processes need to be supported and the political sphere need to be included in the behavior change process. 6 Chapter 4 therefore focuses on the new target group that emerged as essential in the previous chapter, locally elected councilors. I found that councilors do actually consider land use planning procedures as being important, but also as being dysfunctional. Councilors do value their natural environment for themselves as well as for its tourism value, but most councilors had little understanding of what the term “biodiversity” means and did not connect the term “sustainability” with the natural environment. It became also evident, that councilors do not see conservation in a predominantly positive manner. Chapter 5 therefore yields insight on councilor’s perception that environmental protection and development are mutually exclusive, and the negative frames attached to the conservation endeavor as being socially unjust, disrespectful and utopian. In Chapter 6 I investigated the usefulness of a tractable and well established measure of environmental attitudes or beliefs. I assessed my target audience’s responses to the New Ecological Paradigm scale and the Inclusion of Nature in Self scale. I conclude in Chapter 7 with an account of the difficulties I encountered during the project, an assessment of my project from a social marketing perspective, components of my project that did not yield the results expected, and a proposal for future research.
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- Date Issued: 2011
Utilizing geocaching to reduce obesity and increase tourism
- Authors: Von Solms, Woudi
- Date: 2011
- Subjects: Sports and tourism , Obesity
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:9291 , http://hdl.handle.net/10948/d1011157 , Sports and tourism , Obesity
- Description: Tourism has social and economic benefits. Economic benefits are received through tourists visiting tourist attractions. Social benefits related to benefits tourists receive personally when visiting tourist attractions. The number of individuals that are obese are constantly increasing and leads to hazardous medical conditions. The aim of this research study was to determine the extent to which geocaching can be used to increase tourism and decrease obesity. Geocaching is similar to a treasure hunt where participant use clues and a Global Positioning System device to find a treasure that are called a cache. The cache is filled with trinkets that are exchanged by participants that find the cache. Students of the second avenue campus of the Nelson Mandela Metropolitan University were used as respondents and given information on what geocaching involve. Three geocaches were hidden in The Boardwalk Casino and Entertainment World in Summerstrand, Port Elizabeth. The respondents met at The Boardwalk Casino and Entertainment World where a clue and map was provided. After finding the cache the respondents was asked to complete an anonymous questionnaire. The results were calculated and conclusions and recommendations were made. The primary research process was conducted over too short a period of time to conclude whether it can lead to a reduction in obesity. However geocaching experience by respondents did show that the process of geocaching involves physical exercise, which is needed for losing weight. Research also indicated that respondents would like to geocache with family and friends. Geocaching with family and friends involves support which secondary research have also proven is important to losing weight and decreasing obesity. Respondents indicated that they enjoyed geocaching and would like to geocache in their free time. The indication of enjoying geocaching, participating in geocaching during free time allows travelling for leisure purposes as to geocache travelling is necessary and the majority of geocaches is hidden at tourist attractions. The combination of travelling to tourist attractions, enjoying the experience and partaking in physical exercise with family and friends involve two of the three main aspects seen as helping to reduce obesity: enjoyable physical activity and support from family and friends. The conclusion is therefore that geocaching can be utilised to increase tourism and reduce obesity.
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- Date Issued: 2011