What matters in economics teaching and learning? A case study of an introductory macroeconomics course in South Africa
- Authors: Snowball, Jeanette D , Wilson, Magdalene K
- Date: 2006
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/68500 , vital:29270 , https://doi.org/10.19030/tlc.v3i11.1659
- Description: Publisher version , In many universities, economics lecturers now face the challenge of dealing with large, diverse classes, especially at undergraduate level. A common concern is the non-attendance at lectures of unmotivated (conscript) students. Poor lecture quality, as reflected in student evaluations of teaching (SETs), is often blamed for lack of attendance and consequent poor performance. This paper presents the results of a student assessment of a macroeconomics 1 course, coupled with a self-assessment of their own input into the course. The results obtained, using econometric models, suggest that students inputs and attitudes to the course are equally, or more, important than lecture attendance itself.
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Where have all the fathers gone? Media(ted) representations of fatherhood.
- Authors: Prinsloo, Jeanne
- Date: 2006
- Language: English
- Type: Book review
- Identifier: vital:530 , http://hdl.handle.net/10962/d1008483
- Description: [From the introduction]: "It is in the mundane world that media operate most significantly. They filter and frame everyday realities, through their singular and multiple representations, providing touchstones, references, for the conduct of everyday life, for the production and maintenance of common-sense (Silverstone 1999, p.6). While it is broadly accepted that the media do not reflect society, they do provide us with a repertoire of roles and images which we encounter and with which we engage." As the opening quote suggests, the media play a vital role in the circulation and mediation of ideas, attitudes and actions and their significance is commented on frequently. It is noteworthy that such commentary in South Africa identifies that men are infrequently depicted in parental roles. This is in comparison to the other roles men inhabit and in contrast to the role of women as mother. It is also suggested that the macho masculine identities that the media offer serve as proxy father roles.
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why I am not an engineer (thanks frank o’hara)
- Authors: Berold, Robert
- Date: 2006
- Subjects: To be catalogued
- Language: English
- Type: text , poem
- Identifier: http://hdl.handle.net/10962/462536 , vital:76312 , ISBN 0028-4459 , https://journals.co.za/doi/epdf/10.10520/EJC47779
- Description: New Coin is one of South Africa's most established and influential poetry journals. It publishes poetry, and poetry-related reviews, commentary and interviews. New Coin places a particular emphasis on evolving forms and experimental use of the English language in poetry in the South African context. In this sense it has traced the most exciting trends and currents in contemporary poetry in South Africa for a decade of more. The journal is published twice a year in June and December by the Institute for the Study of English in Africa (ISEA), Rhodes University.
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Will the invasive mussel Mytilus galloprovincialis Lamarck replace the indigenous Perna perna L. on the south coast of South Africa?
- Authors: Bownes, Sarah J , McQuaid, Christopher D
- Date: 2006
- Language: English
- Type: Article
- Identifier: vital:6926 , http://hdl.handle.net/10962/d1011914
- Description: The mussel Mytilus galloprovincialis is invasive worldwide, has displaced indigenous species on the west coast of South Africa and now threatens Perna perna on the south coast. We tested the hypothesis that Mytilus will replace Perna by examining changes in their distribution on shores where they co-exist. Total cover, adult density, recruit density, recruit/adult correlations and mean maximum lengths of both species were measured in 2001 at two contrasting sites (Plettenberg Bay and Tsitsikamma) 70 km apart, each including two locations 100 m apart. Cover and density were measured again in 2004. Total mussel abundance was significantly lower in Tsitsikamma, and recruit density was only 17% that of Plettenberg Bay. Abundance and cover increased upshore for Mytilus, but decreased for Perna, giving Mytilus higher adult and recruit density and total cover than Perna in the upper zones. Low shore densities of recruits and adults were similar between species but cover was lower for Mytilus, reflecting its smaller size, and presumably slower growth or higher mortality there. Thus, mechanisms excluding species differed among zones. Recruitment limitation delays invasion at Tsitsikamma and excludes Perna from the high shore, while Mytilus is excluded from the low shore by post-recruitment effects. Recruitment limitation also shapes population structure. Recruit/adult correlations were significant only where adult densities were low, and this effect was species-specific. Thus, at low densities, larvae settle or survive better near adult conspecifics. After 3 years, these patterns remained strongly evident, suggesting Mytilus will not eliminate Perna and that co-existence is possible through partial habitat segregation driven by recruitment limitation of Perna on the high shore and post-settlement effects on Mytilus on the low shore.
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Wireless Ethernet Propagation Modeling Software
- Authors: Janse van Rensburg, Johanna , Irwin, Barry V W
- Date: 2006
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/428249 , vital:72497
- Description: Wireless technologies have had an enormous impact on networking in recent years. It can create new business oppurtunities and allow users to communicate and share data in a new fashion. Wireless Networks decrease installation costs, reduce the deployment time of a network and overcome physical barrier problems inherent in wiring. Unfortunately this flexibility comes at a price. The deployment, installation and setup of a WLAN is not a simple task and a number of factors need to be con-sidered. Wireless Networks are notorious for being insecure due to signal spill, ad-hoc unauthorized access points and varying encryption strengths and standards. RF (Radio Frequency) interference and physical barriers suppress a signal. In addition the channel frequencies each access point will be using in order to provide maxi-mum roaming but minimum inter access point interference need to be considered. It is a complex balancing act to take these factors into account while still maintaining coverage, performance and security requirements. In this paper the benefits and feasibility of a model will be discussed that will enable the network administrator to visualize the coverage footprint of their wireless network when the above factors are taken into consideration. The program will be able to predict the strength, prop-agation and unwanted spill of signals which could compromise the security of an organisation prior to the deployment of a WLAN. In addition the model will provide functionality to visualize a signal from audit data once the WLAN is operational. The end result will be a program that can aid in the configuration, installation and man-agement of a secure WLAN.
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Wireless Security Tools
- Authors: Janse van Rensburg, Johanna , Irwin, Barry V W
- Date: 2006
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/429867 , vital:72647 , https://digifors.cs.up.ac.za/issa/2006/Proceedings/Research/113_Paper.pdf
- Description: Detecting and investigating intrusive Internet activity is an ever-present challenge for network administrators and security researchers. Network monitoring can generate large, unmanageable amounts of log data, which further complicates distinguishing between illegitimate and legiti-mate traffic. Considering the above issue, this article has two aims. First, it describes an investigative methodology for network monitoring and traffic review; and second, it discusses results from applying this method. The method entails a combination of network telescope traffic capture and visualisation. Observing traffic from the perspective of a dedicated sensor network reduces the volume of data and alleviates the concern of confusing malicious traffic with legitimate traffic. Com-plimenting this, visual analysis facilitates the rapid review and correla-tion of events, thereby utilizing human intelligence in the identification of scanning patterns. To demonstrate the proposed method, several months of network telescope traffic is captured and analysed with a tai-lor made 3D scatter-plot visualisation. As the results show, the visuali-sation saliently conveys anomalous patterns, and further analysis re-veals that these patterns are indicative of covert network probing activi-ty. By incorporating visual analysis with traditional approaches, such as textual log review and the use of an intrusion detection system, this re-search contributes improved insight into network scanning incidents.
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Yours, mine and ours: intellectual property
- Authors: Garman, Anthea
- Date: 2006
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/158784 , vital:40228 , https://hdl.handle.net/10520/EJC146169
- Description: When Grocott's Mail in Grahamstown wanted to use the Hector Pieterson photograph for the front cover of a Youth Day supplement celebrating the courage of the Soweto students of 1976, they decided to go the official route by contacting the photographer's agent and paying for the picture. They were told a single use would cost them thousands of rands. Obviously an impossibility for a small-town, community newspaper.
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Zambia African Media Development Initiative (AMDI) research report
- Authors: Banda, Fackson
- Date: 2006
- Language: English
- Type: Report
- Identifier: vital:533 , http://hdl.handle.net/10962/d1008546
- Description: This report is one of 18 produced as part of the African Media Development Initiative Research Project, completed in 2006. Firstly, the study outlines the major media development initiatives that have taken place in the Zambian media and communication landscape since 2000. Secondly, it analyses how key actors view these initiatives, in the light of wider media development programmes unfolding on the African continent. Thirdly, it gives a case study of one particularly insightful media development activity in the country. On the whole, the study concludes that the radio sector has grown since 2000. Television has received little investment because the state has more control over this sector. The past five years have seen a growth in better-coordinated media development initiatives. The content of the media has itself become diversified, but there is still a prepoderance of urban-based, elite voices.
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‘Exploring the practical adequacy of the human rights, social justice, inclusivity and healthy environment policy discourse in South Africa’s National Curriculum Statement’
- Authors: Schudel, Ingrid J , Lotz-Sisitka, Heila
- Date: 2006
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/391180 , vital:68629 , xlink:href="https://www.tandfonline.com/doi/full/10.1080/13504620701284860"
- Description: This article examines the practical adequacy of the recent defining of a normative framework for the South African National Curriculum Statement that focuses on the relationship between human rights, social justice and a healthy environment. This politically framed and socially critical normative framework has developed in response to socio-political and socio-ecological histories in postapartheid curriculum transformation processes. The article critically considers the process of working with a normative framework in the defining of environmental education teaching and learning interactions, and seeks not only to explore the policy discourse critically, but also to explore what it is about the world that makes it work in different ways. Drawing on Sayer’s perspectives on the possibilities of enabling ‘situated universalism’ as a form of normative theory, and case-based data from a teacher professional development programme in the Makana District (where the authors live and work), the article probes the relationship between the establishment of a ‘universalising’ normative framework to guide national curriculum, and situated engagements with this framework in/as democratic process. In this process it questions whether educators should adopt the ‘norms’ as presented by society and simply universalize and implement them as prescribed by curriculum statements, or whether educators should adopt the strategies of postmodernists and reduce normative frameworks to relations of power situated in particular contexts.
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