The system of the mbira
- Authors: Tracey, Andrew
- Date: 2015
- Language: English
- Type: article , text
- Identifier: http://hdl.handle.net/10962/59720 , vital:27642 , http://dx.doi.org/10.21504/amj.v10i1.1229
- Description: The existence of a harmonically-based system of the mbira in Africa should be of great interest in itself, in comparison with modern African musical preferences, and for Afro-American music studies, where the blues sequence is another highly generative harmonic system. It demonstrates a unique method of getting harmonically “from here to there”, and offers an almost endless potential for Shona composers. In fact, the special tinge, the appeal, of modern Shona popular, church and school music comes in large part from the principles of the system which fortunately persist even when composers are working in Western harmony.This is a re-edited and updated version of the paper presented at the 7th Symposium on Ethnomusicology (Venda University) in 1988, published by ILAM in “Papers presented at the 7th and 8th Symposiums in Ethnomusicology” (1989). It is reproduced here because of the worldwide interest which has developed in mbira and its system in recent decades.
- Full Text:
- Date Issued: 2015
- Authors: Tracey, Andrew
- Date: 2015
- Language: English
- Type: article , text
- Identifier: http://hdl.handle.net/10962/59720 , vital:27642 , http://dx.doi.org/10.21504/amj.v10i1.1229
- Description: The existence of a harmonically-based system of the mbira in Africa should be of great interest in itself, in comparison with modern African musical preferences, and for Afro-American music studies, where the blues sequence is another highly generative harmonic system. It demonstrates a unique method of getting harmonically “from here to there”, and offers an almost endless potential for Shona composers. In fact, the special tinge, the appeal, of modern Shona popular, church and school music comes in large part from the principles of the system which fortunately persist even when composers are working in Western harmony.This is a re-edited and updated version of the paper presented at the 7th Symposium on Ethnomusicology (Venda University) in 1988, published by ILAM in “Papers presented at the 7th and 8th Symposiums in Ethnomusicology” (1989). It is reproduced here because of the worldwide interest which has developed in mbira and its system in recent decades.
- Full Text:
- Date Issued: 2015
The time of hospitality in Samuel Beckett's Murphy, Michael Ondaatje's The English Patient and Damon Galgut's The Good Doctor:
- Authors: Marais, Mike
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/144106 , vital:38312 , DOI: 10.1080/00138398.2015.1083193
- Description: In this article, I focus on the temporal dimension of the differential process through which community constitutes itself. If community is premised on the sameness that is enabled by that which it excludes, and sees as a threat, then it must seek always to conserve itself and to render the future – which is hazardous in its uncertainty – calculable, predictable and determinable. In its search for stability and permanence, community must dominate time in such a way that it is overcome, that it withdraws from itself. Arguably, though, we would view time less teleologically and programmatically, if we could relate differently to the difference on which community depends. A form of hospitality that is predicated on an acceptance of otherness – not only that of a community's outsiders, but also the ‘common strangeness’ of its insiders – would alter the ways in which being-in-common is conceived, and would also change our experience of belonging.
- Full Text:
- Date Issued: 2015
- Authors: Marais, Mike
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/144106 , vital:38312 , DOI: 10.1080/00138398.2015.1083193
- Description: In this article, I focus on the temporal dimension of the differential process through which community constitutes itself. If community is premised on the sameness that is enabled by that which it excludes, and sees as a threat, then it must seek always to conserve itself and to render the future – which is hazardous in its uncertainty – calculable, predictable and determinable. In its search for stability and permanence, community must dominate time in such a way that it is overcome, that it withdraws from itself. Arguably, though, we would view time less teleologically and programmatically, if we could relate differently to the difference on which community depends. A form of hospitality that is predicated on an acceptance of otherness – not only that of a community's outsiders, but also the ‘common strangeness’ of its insiders – would alter the ways in which being-in-common is conceived, and would also change our experience of belonging.
- Full Text:
- Date Issued: 2015
The timing of moult in males and females of the monomorphic Pale-winged Starling Onychognathus nabouroup
- Craig, Adrian J F K, Bonnevie, Bo T, Hausberger, Martine, Henry, Laurence
- Authors: Craig, Adrian J F K , Bonnevie, Bo T , Hausberger, Martine , Henry, Laurence
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/443805 , vital:74155 , https://hdl.handle.net/10520/EJC177689
- Description: Pale-winged Starlings Onychognathus nabouroup inhabit the arid western interior of southern Africa and moult-breeding overlap may occur. We collected field data in two successive years on the moult of individual birds, whose sex was confirmed by genetic techniques. Small samples revealed a non-significant tendency for the moult of females in the early stages of wing moult to be more advanced than that of males in both years, but also clear evidence that the starting date of moult differed in the two years. In this species the moult schedule may thus be variable at both the individual and the population levels.
- Full Text:
- Date Issued: 2015
- Authors: Craig, Adrian J F K , Bonnevie, Bo T , Hausberger, Martine , Henry, Laurence
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/443805 , vital:74155 , https://hdl.handle.net/10520/EJC177689
- Description: Pale-winged Starlings Onychognathus nabouroup inhabit the arid western interior of southern Africa and moult-breeding overlap may occur. We collected field data in two successive years on the moult of individual birds, whose sex was confirmed by genetic techniques. Small samples revealed a non-significant tendency for the moult of females in the early stages of wing moult to be more advanced than that of males in both years, but also clear evidence that the starting date of moult differed in the two years. In this species the moult schedule may thus be variable at both the individual and the population levels.
- Full Text:
- Date Issued: 2015
The trade in and household use of Phoenix reclinata palm frond hand brushes on the Wild Coast, South Africa: Effects on soil nutrients
- Mjoli, Nwabisa, Shackleton, Charlie M
- Authors: Mjoli, Nwabisa , Shackleton, Charlie M
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/180800 , vital:43647 , xlink:href="https://doi.org/10.1007/s12231-015-9316-9"
- Description: The Trade in and Household Use of Phoenix reclinata Palm Frond Hand Brushes on the Wild Coast, South Africa. This paper reports on an investigation of the harvesting, trade, and use of hand brushes made from fronds of the wild palm, Phoenix reclinata. We considered both the abundance of the resource as well as the demand. Within the harvesting areas, there were approximately 141 palm plants per hectare, of which almost two-thirds showed no signs of frond harvesting. During harvesting, most fronds (82%) were left on the plant, 16% were removed to make brushes, and 2% were cut and discarded. Although the number of harvesters had increased during the last decade, most felt that the number of palm plants had remained stable or even increased over the same period. There was strong consensus that cut fronds were replaced within two months, after which a particular stem could be harvested again. Harvesting and trade were practiced largely by middle-aged to elderly women, who had limited formal education, skills, and employment prospects. Most had entered the trade because of cash income poverty. The main markets for selling the palm brushes were in nearby urban areas. The income earned from the trade was modest, but still rated highly by the traders, for most of whom it was the second most-important source of cash income. For many users, the palm brushes was found to be the only type of brush suitable for cleaning mud and cow-dung flooring and, most importantly for many, their use forms part of a long household use history and culture.
- Full Text:
- Date Issued: 2015
- Authors: Mjoli, Nwabisa , Shackleton, Charlie M
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/180800 , vital:43647 , xlink:href="https://doi.org/10.1007/s12231-015-9316-9"
- Description: The Trade in and Household Use of Phoenix reclinata Palm Frond Hand Brushes on the Wild Coast, South Africa. This paper reports on an investigation of the harvesting, trade, and use of hand brushes made from fronds of the wild palm, Phoenix reclinata. We considered both the abundance of the resource as well as the demand. Within the harvesting areas, there were approximately 141 palm plants per hectare, of which almost two-thirds showed no signs of frond harvesting. During harvesting, most fronds (82%) were left on the plant, 16% were removed to make brushes, and 2% were cut and discarded. Although the number of harvesters had increased during the last decade, most felt that the number of palm plants had remained stable or even increased over the same period. There was strong consensus that cut fronds were replaced within two months, after which a particular stem could be harvested again. Harvesting and trade were practiced largely by middle-aged to elderly women, who had limited formal education, skills, and employment prospects. Most had entered the trade because of cash income poverty. The main markets for selling the palm brushes were in nearby urban areas. The income earned from the trade was modest, but still rated highly by the traders, for most of whom it was the second most-important source of cash income. For many users, the palm brushes was found to be the only type of brush suitable for cleaning mud and cow-dung flooring and, most importantly for many, their use forms part of a long household use history and culture.
- Full Text:
- Date Issued: 2015
The women of Willowvale-crafting livelihoods from the wild date palm
- Mjoli, Nwabisa, Shackleton, Charlie M
- Authors: Mjoli, Nwabisa , Shackleton, Charlie M
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/182322 , vital:43820 , xlink:href="https://hdl.handle.net/10520/EJC185235"
- Description: The Wild Coast of the Eastern Cape is renowned for its cultural landscapes, stunning scenery and remarkable biodiversity. It is also one of the least developed regions of South Africa, which underpins the small productive base and limited economic opportunities for the hundreds of rural communities scattered along the hilltops. It is not surprising therefore, that many inhabitants make extensive use of natural resources, such as firewood, reed mats, medicinal plants and wild vegetables, in their daily lives, as well as for sources of income when the opportunity arises.
- Full Text:
- Date Issued: 2015
- Authors: Mjoli, Nwabisa , Shackleton, Charlie M
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/182322 , vital:43820 , xlink:href="https://hdl.handle.net/10520/EJC185235"
- Description: The Wild Coast of the Eastern Cape is renowned for its cultural landscapes, stunning scenery and remarkable biodiversity. It is also one of the least developed regions of South Africa, which underpins the small productive base and limited economic opportunities for the hundreds of rural communities scattered along the hilltops. It is not surprising therefore, that many inhabitants make extensive use of natural resources, such as firewood, reed mats, medicinal plants and wild vegetables, in their daily lives, as well as for sources of income when the opportunity arises.
- Full Text:
- Date Issued: 2015
Too big to fail?: the case of the New York Times: journalism next
- Authors: Garman, Anthea
- Date: 2015
- Language: English
- Type: text , article
- Identifier: vital:38353 , http://hdl.handle.net/10520/EJC175792
- Description: Andrew Phelps, the Senior Product Manager for The New York Times and one of the investigators involved in the leaked Innovation Report, (the paper's investigation on changes needed to cope with the digital world) was the keynote speaker at the Menell Media Exchange (MMX15) in South Africa this year. Here are some highlights from his talk to a crowded room of journalists from across the country and journalism spectrum.
- Full Text:
- Date Issued: 2015
- Authors: Garman, Anthea
- Date: 2015
- Language: English
- Type: text , article
- Identifier: vital:38353 , http://hdl.handle.net/10520/EJC175792
- Description: Andrew Phelps, the Senior Product Manager for The New York Times and one of the investigators involved in the leaked Innovation Report, (the paper's investigation on changes needed to cope with the digital world) was the keynote speaker at the Menell Media Exchange (MMX15) in South Africa this year. Here are some highlights from his talk to a crowded room of journalists from across the country and journalism spectrum.
- Full Text:
- Date Issued: 2015
Towards a PHP webshell taxonomy using deobfuscation-assisted similarity analysis
- Wrench, Peter M, Irwin, Barry V W
- Authors: Wrench, Peter M , Irwin, Barry V W
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/429560 , vital:72622 , 10.1109/ISSA.2015.7335066
- Description: The abundance of PHP-based Remote Access Trojans (or web shells) found in the wild has led malware researchers to develop systems capable of tracking and analysing these shells. In the past, such shells were ably classified using signature matching, a process that is currently unable to cope with the sheer volume and variety of web-based malware in circulation. Although a large percentage of newly-created webshell software incorporates portions of code derived from seminal shells such as c99 and r57, they are able to disguise this by making extensive use of obfuscation techniques intended to frustrate any attempts to dissect or reverse engineer the code. This paper presents an approach to shell classification and analysis (based on similarity to a body of known malware) in an attempt to create a comprehensive taxonomy of PHP-based web shells. Several different measures of similarity were used in conjunction with clustering algorithms and visualisation techniques in order to achieve this. Furthermore, an auxiliary component capable of syntactically deobfuscating PHP code is described. This was employed to reverse idiomatic obfuscation constructs used by software authors. It was found that this deobfuscation dramatically increased the observed levels of similarity by exposing additional code for analysis.
- Full Text:
- Date Issued: 2015
- Authors: Wrench, Peter M , Irwin, Barry V W
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/429560 , vital:72622 , 10.1109/ISSA.2015.7335066
- Description: The abundance of PHP-based Remote Access Trojans (or web shells) found in the wild has led malware researchers to develop systems capable of tracking and analysing these shells. In the past, such shells were ably classified using signature matching, a process that is currently unable to cope with the sheer volume and variety of web-based malware in circulation. Although a large percentage of newly-created webshell software incorporates portions of code derived from seminal shells such as c99 and r57, they are able to disguise this by making extensive use of obfuscation techniques intended to frustrate any attempts to dissect or reverse engineer the code. This paper presents an approach to shell classification and analysis (based on similarity to a body of known malware) in an attempt to create a comprehensive taxonomy of PHP-based web shells. Several different measures of similarity were used in conjunction with clustering algorithms and visualisation techniques in order to achieve this. Furthermore, an auxiliary component capable of syntactically deobfuscating PHP code is described. This was employed to reverse idiomatic obfuscation constructs used by software authors. It was found that this deobfuscation dramatically increased the observed levels of similarity by exposing additional code for analysis.
- Full Text:
- Date Issued: 2015
Transformation, job creation and subsidies to creative industries: the case of South Africa’s film and television sector
- Collins, Alan, Snowball, Jeanette D
- Authors: Collins, Alan , Snowball, Jeanette D
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/67433 , vital:29087 , https://doi.org/10.1080/10286632.2013.874418
- Description: Pre-print , Many governments have tried to stimulate economic growth via policy on the creative industries. South Africa is no different but additionally has an overarching aim of achieving social and labour market ‘transformation’ to move away from the legacy of the apartheid era. The effectiveness of incentives provided to the film and television sector in South Africa are considered in terms of their stated objectives of job creation, skills and knowledge transfer and the attraction of foreign direct investment. Informed by empirical analysis of incentive scheme data and supplemented by elite interviews with key informants, some specific policy revisions are proposed.
- Full Text:
- Date Issued: 2015
- Authors: Collins, Alan , Snowball, Jeanette D
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/67433 , vital:29087 , https://doi.org/10.1080/10286632.2013.874418
- Description: Pre-print , Many governments have tried to stimulate economic growth via policy on the creative industries. South Africa is no different but additionally has an overarching aim of achieving social and labour market ‘transformation’ to move away from the legacy of the apartheid era. The effectiveness of incentives provided to the film and television sector in South Africa are considered in terms of their stated objectives of job creation, skills and knowledge transfer and the attraction of foreign direct investment. Informed by empirical analysis of incentive scheme data and supplemented by elite interviews with key informants, some specific policy revisions are proposed.
- Full Text:
- Date Issued: 2015
Transformative processes in environmental education: A case study
- Fox, Helen E, Palmer, Carolyn G, O'Donoghue, Rob B
- Authors: Fox, Helen E , Palmer, Carolyn G , O'Donoghue, Rob B
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/387323 , vital:68225 , xlink:href="https://www.ajol.info/index.php/sajee/article/view/137680"
- Description: This paper presents a case study on the severely degraded Boksburg Lake’s (Gauteng, South Africa) social–ecological system, and on an environmental-education initiative that aimed to support the lake’s transformation with a view to its improved social and ecological well-being. In this case study, three key characteristics of the initiative which appeared to support the transformative process are discussed, namely: 1. Learning was aligned with the local social–ecological context; 2. Human-to-human and human-to-ecological connections were encouraged; and 3. The youth played a key role in initiating and effecting transformation.
- Full Text:
- Date Issued: 2015
- Authors: Fox, Helen E , Palmer, Carolyn G , O'Donoghue, Rob B
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/387323 , vital:68225 , xlink:href="https://www.ajol.info/index.php/sajee/article/view/137680"
- Description: This paper presents a case study on the severely degraded Boksburg Lake’s (Gauteng, South Africa) social–ecological system, and on an environmental-education initiative that aimed to support the lake’s transformation with a view to its improved social and ecological well-being. In this case study, three key characteristics of the initiative which appeared to support the transformative process are discussed, namely: 1. Learning was aligned with the local social–ecological context; 2. Human-to-human and human-to-ecological connections were encouraged; and 3. The youth played a key role in initiating and effecting transformation.
- Full Text:
- Date Issued: 2015
Transformative, transgressive social learning: Rethinking higher education pedagogy in times of systemic global dysfunction
- Lotz-Sisitka, Heila, Wals, Arjen E J, Kronlid, David O, McGarry, Dylan K
- Authors: Lotz-Sisitka, Heila , Wals, Arjen E J , Kronlid, David O , McGarry, Dylan K
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/372794 , vital:66623 , xlink:href="https://doi.org/10.1016/j.cosust.2015.07.018"
- Description: The nature of the sustainability challenges currently at hand is such that dominant pedagogies and forms of learning that characterize higher education need to be reconsidered to enable students and staff to deal with accelerating change, increasing complexity, contested knowledge claims and inevitable uncertainty. In this contribution we identified four streams of emerging transformative, transgressive learning research and praxis in the sustainability sciences that appear generative of a higher education pedagogy that appears more responsive to the key challenges of our time: (1) reflexive social learning and capabilities theory, (2) critical phenomenology, (3) socio-cultural and cultural historical activity theory, and (4) new social movement, postcolonial and decolonisation theory. The paper critiques the current tendency in sustainability science and learning to rely on resilience and adaptive capacity building and argues that in order to break with maladaptive resilience of unsustainable systems it is essential to strengthen transgressive learning and disruptive capacity-building.
- Full Text:
- Date Issued: 2015
- Authors: Lotz-Sisitka, Heila , Wals, Arjen E J , Kronlid, David O , McGarry, Dylan K
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/372794 , vital:66623 , xlink:href="https://doi.org/10.1016/j.cosust.2015.07.018"
- Description: The nature of the sustainability challenges currently at hand is such that dominant pedagogies and forms of learning that characterize higher education need to be reconsidered to enable students and staff to deal with accelerating change, increasing complexity, contested knowledge claims and inevitable uncertainty. In this contribution we identified four streams of emerging transformative, transgressive learning research and praxis in the sustainability sciences that appear generative of a higher education pedagogy that appears more responsive to the key challenges of our time: (1) reflexive social learning and capabilities theory, (2) critical phenomenology, (3) socio-cultural and cultural historical activity theory, and (4) new social movement, postcolonial and decolonisation theory. The paper critiques the current tendency in sustainability science and learning to rely on resilience and adaptive capacity building and argues that in order to break with maladaptive resilience of unsustainable systems it is essential to strengthen transgressive learning and disruptive capacity-building.
- Full Text:
- Date Issued: 2015
Transformative, transgressive social learning: Rethinking higher education pedagogy in times of systemic global dysfunction
- Lotz-Sisitka, Heila, Wals, Arjen E, Kronlid, David O, McGarry, Dylan K
- Authors: Lotz-Sisitka, Heila , Wals, Arjen E , Kronlid, David O , McGarry, Dylan K
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/392190 , vital:68729 , xlink:href="https://doi.org/10.1016/j.cosust.2015.07.018"
- Description: The nature of the sustainability challenges currently at hand is such that dominant pedagogies and forms of learning that characterize higher education need to be reconsidered to enable students and staff to deal with accelerating change, increasing complexity, contested knowledge claims and inevitable uncertainty. In this contribution we identified four streams of emerging transformative, transgressive learning research and praxis in the sustainability sciences that appear generative of a higher education pedagogy that appears more responsive to the key challenges of our time: (1) reflexive social learning and capabilities theory, (2) critical phenomenology, (3) socio-cultural and cultural historical activity theory, and (4) new social movement, postcolonial and decolonisation theory. The paper critiques the current tendency in sustainability science and learning to rely on resilience and adaptive capacity building and argues that in order to break with maladaptive resilience of unsustainable systems it is essential to strengthen transgressive learning and disruptive capacity-building.
- Full Text:
- Date Issued: 2015
- Authors: Lotz-Sisitka, Heila , Wals, Arjen E , Kronlid, David O , McGarry, Dylan K
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/392190 , vital:68729 , xlink:href="https://doi.org/10.1016/j.cosust.2015.07.018"
- Description: The nature of the sustainability challenges currently at hand is such that dominant pedagogies and forms of learning that characterize higher education need to be reconsidered to enable students and staff to deal with accelerating change, increasing complexity, contested knowledge claims and inevitable uncertainty. In this contribution we identified four streams of emerging transformative, transgressive learning research and praxis in the sustainability sciences that appear generative of a higher education pedagogy that appears more responsive to the key challenges of our time: (1) reflexive social learning and capabilities theory, (2) critical phenomenology, (3) socio-cultural and cultural historical activity theory, and (4) new social movement, postcolonial and decolonisation theory. The paper critiques the current tendency in sustainability science and learning to rely on resilience and adaptive capacity building and argues that in order to break with maladaptive resilience of unsustainable systems it is essential to strengthen transgressive learning and disruptive capacity-building.
- Full Text:
- Date Issued: 2015
Transnationalism as Process, Diaspora as Condition:
- Authors: Owen, Joy
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/147983 , vital:38699 , https://www.ajol.info/index.php/jsda/article/view/136745
- Description: In 2004 I embarked on 15 months of ethnographic fieldwork that spanned a six year period with Congolese migrants in Muizenberg, Cape Town. During fieldwork it was necessary to identify these migrants either as diasporic or as a transnational community given the purchase of transnationalism in the migration field.
- Full Text:
- Date Issued: 2015
- Authors: Owen, Joy
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/147983 , vital:38699 , https://www.ajol.info/index.php/jsda/article/view/136745
- Description: In 2004 I embarked on 15 months of ethnographic fieldwork that spanned a six year period with Congolese migrants in Muizenberg, Cape Town. During fieldwork it was necessary to identify these migrants either as diasporic or as a transnational community given the purchase of transnationalism in the migration field.
- Full Text:
- Date Issued: 2015
Trophic relationships of hake (Merluccius capensis and M. paradoxus) and sharks (Centrophorus squamosus, Deania calcea and D. profundorum) in the Northern (Namibia) Benguela Current region
- Iitembu, Johannes A, Richoux, Nicole B
- Authors: Iitembu, Johannes A , Richoux, Nicole B
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/443830 , vital:74157 , https://hdl.handle.net/10520/EJC183122
- Description: The trophic relationships of two hake species (Merluccius capensis and M. paradoxus) and three shark species (Centrophorus squamosus, Deania calcea and D. profundorum) were investigated using nitrogen and carbon stable isotope signatures (15N and 13C) of their muscle tissues. The sharks were more enriched in 15N than the hake, an indication of the apex predator status of sharks. Among the sharks considered, C. squamosus occupied the highest trophic level and fed primarily on benthic prey. The two species of shark from the genus Deania were not different based on 15N or 13C, so they had similar diets. The 13C signatures indicated that M. capensis and sharks fed on prey derived from similar basal resources. However, there was a significant difference in 13C between M. paradoxus and all other species examined, suggesting that they occupied different feeding niches. Isotope-based populationmetrics showed narrower trophic ranges in sharks than M. capensis. Carbon and nitrogen ranges indicated that hake fed on a more diverse pool of carbon sources and had generally more enhanced trophic diversity in their feeding patterns than sharks. Among the species considered, C. squamosus occupied a unique isotopic space. Our results supported the hypothesis there are trophic overlaps among these species, but some interesting differentiation was revealed.
- Full Text:
- Date Issued: 2015
- Authors: Iitembu, Johannes A , Richoux, Nicole B
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/443830 , vital:74157 , https://hdl.handle.net/10520/EJC183122
- Description: The trophic relationships of two hake species (Merluccius capensis and M. paradoxus) and three shark species (Centrophorus squamosus, Deania calcea and D. profundorum) were investigated using nitrogen and carbon stable isotope signatures (15N and 13C) of their muscle tissues. The sharks were more enriched in 15N than the hake, an indication of the apex predator status of sharks. Among the sharks considered, C. squamosus occupied the highest trophic level and fed primarily on benthic prey. The two species of shark from the genus Deania were not different based on 15N or 13C, so they had similar diets. The 13C signatures indicated that M. capensis and sharks fed on prey derived from similar basal resources. However, there was a significant difference in 13C between M. paradoxus and all other species examined, suggesting that they occupied different feeding niches. Isotope-based populationmetrics showed narrower trophic ranges in sharks than M. capensis. Carbon and nitrogen ranges indicated that hake fed on a more diverse pool of carbon sources and had generally more enhanced trophic diversity in their feeding patterns than sharks. Among the species considered, C. squamosus occupied a unique isotopic space. Our results supported the hypothesis there are trophic overlaps among these species, but some interesting differentiation was revealed.
- Full Text:
- Date Issued: 2015
Troubling the troubled identities of victims and perpetrators in approaches to social justice:
- Authors: Edlmann, Theresa
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/143593 , vital:38265 , https://ischp.files.wordpress.com/2015/08/ischp_2015_abstract_booklet.pdf
- Description: The terms “victim” and “perpetrator” have become an integral part of human rights-based language about systemic, political, sexual and interpersonal violence. This paper will argue that the terms “victim” and “perpetrator” reflect social constructs whose meaning and impact have shifted and changed over time, but that these evolutions have seldom been adequately interrogated or understood. In developing this argument, the paper will provide a brief historical outline of the emergence and use of these terms in social justice work since the mid-twentieth century, and explore the extent to which they comprise what narrative inquiry would call “discursive resources” which are often “troubled”. The paper will highlight the need for greater critical refection about the psychological, social and political discourses of identity that constellate around terms such as “victim” and “perpetrator”. It will also reflect on the conceptual underpinnings of contemporary mechanisms to address violence that these constructs and discourses give rise to.
- Full Text:
- Date Issued: 2015
- Authors: Edlmann, Theresa
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/143593 , vital:38265 , https://ischp.files.wordpress.com/2015/08/ischp_2015_abstract_booklet.pdf
- Description: The terms “victim” and “perpetrator” have become an integral part of human rights-based language about systemic, political, sexual and interpersonal violence. This paper will argue that the terms “victim” and “perpetrator” reflect social constructs whose meaning and impact have shifted and changed over time, but that these evolutions have seldom been adequately interrogated or understood. In developing this argument, the paper will provide a brief historical outline of the emergence and use of these terms in social justice work since the mid-twentieth century, and explore the extent to which they comprise what narrative inquiry would call “discursive resources” which are often “troubled”. The paper will highlight the need for greater critical refection about the psychological, social and political discourses of identity that constellate around terms such as “victim” and “perpetrator”. It will also reflect on the conceptual underpinnings of contemporary mechanisms to address violence that these constructs and discourses give rise to.
- Full Text:
- Date Issued: 2015
Trypanosoma brucei J protein 2 is a stress inducible and essential Hsp40
- Ludewig, Michael H, Boshoff, Aileen, Horn, David, Blatch, Gregory L
- Authors: Ludewig, Michael H , Boshoff, Aileen , Horn, David , Blatch, Gregory L
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/431798 , vital:72804 , xlink:href="https://doi.org/10.1016/j.biocel.2014.12.016"
- Description: Hsp40 proteins (also known as DnaJ or J proteins) serve as co-chaperones for Hsp70, but also display evidence of independent chaperone function. Furthermore, certain Hsp40s have been shown to be stress-inducible and essential. Trypanosomatids display a remarkable diversification of Hsp40 proteins, with numerous distinct Hsp40-like proteins encoded in the Trypanosoma brucei genome. This study investigated the role of one of the six T. brucei Type I Hsp40s, T. brucei J protein 2 (Tbj2). We found that Tbj2 was heat stress-inducible, and that knockdown using RNA interference resulted in a severe growth defect under normal growth temperatures. Furthermore, a green fluorescent protein (GFP)-Tbj2 fusion protein was found to be localized to the cytosol of T. brucei. Taken together, these data suggest that Tbj2 is not functionally equivalent to the other five Type I Hsp40s, and that it is an essential, cytosolic, and stress-inducible chaperone, potentially playing an important role in protein biogenesis in T. brucei.
- Full Text:
- Date Issued: 2015
- Authors: Ludewig, Michael H , Boshoff, Aileen , Horn, David , Blatch, Gregory L
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/431798 , vital:72804 , xlink:href="https://doi.org/10.1016/j.biocel.2014.12.016"
- Description: Hsp40 proteins (also known as DnaJ or J proteins) serve as co-chaperones for Hsp70, but also display evidence of independent chaperone function. Furthermore, certain Hsp40s have been shown to be stress-inducible and essential. Trypanosomatids display a remarkable diversification of Hsp40 proteins, with numerous distinct Hsp40-like proteins encoded in the Trypanosoma brucei genome. This study investigated the role of one of the six T. brucei Type I Hsp40s, T. brucei J protein 2 (Tbj2). We found that Tbj2 was heat stress-inducible, and that knockdown using RNA interference resulted in a severe growth defect under normal growth temperatures. Furthermore, a green fluorescent protein (GFP)-Tbj2 fusion protein was found to be localized to the cytosol of T. brucei. Taken together, these data suggest that Tbj2 is not functionally equivalent to the other five Type I Hsp40s, and that it is an essential, cytosolic, and stress-inducible chaperone, potentially playing an important role in protein biogenesis in T. brucei.
- Full Text:
- Date Issued: 2015
Uncle Noodle
- Authors: Krueger, Anton
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/229676 , vital:49699 , xlink:href="https://hdl.handle.net/10520/EJC176906"
- Description: “Ah,” he seemed surprised to see me, “Now you find out who really cares...” His kidneys hadn‟t been on the job in months, and with the machines failing, his hands were fattening into stubby yellow fingers, as the waste shored up inside of him. I touched his arm, and we joked about the broad blunt strokes of the casiotone the old dame played for the lunch-eaters next door. Uncle Noodle had always been my favourite. In a world where adults were always certain, ready to disdain and judge and pass verdict – I loved it that he was indecisive, insecure, unsure. Often wretched, often defeated. His heart had chasmed in the wake of his wife‟s leaving, finally dividing him from all his hopes, collapsing his dignity destroying his happiness machinery.
- Full Text:
- Date Issued: 2015
- Authors: Krueger, Anton
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/229676 , vital:49699 , xlink:href="https://hdl.handle.net/10520/EJC176906"
- Description: “Ah,” he seemed surprised to see me, “Now you find out who really cares...” His kidneys hadn‟t been on the job in months, and with the machines failing, his hands were fattening into stubby yellow fingers, as the waste shored up inside of him. I touched his arm, and we joked about the broad blunt strokes of the casiotone the old dame played for the lunch-eaters next door. Uncle Noodle had always been my favourite. In a world where adults were always certain, ready to disdain and judge and pass verdict – I loved it that he was indecisive, insecure, unsure. Often wretched, often defeated. His heart had chasmed in the wake of his wife‟s leaving, finally dividing him from all his hopes, collapsing his dignity destroying his happiness machinery.
- Full Text:
- Date Issued: 2015
Variation in urease and β-glucosidase activities with soil depth and root density in a ‘Cripp's Pink’/M7 apple orchard under conventional and organic management.
- Meyer, André H, Wooldridge, John, Dames, Joanna F
- Authors: Meyer, André H , Wooldridge, John , Dames, Joanna F
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/444051 , vital:74181 , https://doi.org/10.1080/02571862.2015.1053155
- Description: The effects of conventional (CON; utilising synthetic fertiliser and herbicide) and organic (ORG; nutrients supplied in compost, weeds controlled with straw mulch) orchard floor management practices on depth-wise variation in urease and β-glucosidase activities in tree-row soils were compared in a Western Cape ‘Cripp's Pink’/M7 apple orchard. Urease and β-glucosidase activities were determined spectrophotometrically in soils from five depth intervals from the walls of trenches excavated across the tree rows after seven years of treatment application. Soil pH, organic carbon, nitrate (NO3 ) and ammonium (NH4 ) nitrogen were also determined, as was root density. Enzyme activities were higher in the ORG than the CON topsoils but did not differ significantly (p = 0.05) at depths >30 cm. The positive effects of the ORG treatments were attributed to the liming effect and carbon and nitrogen contributions of the compost. Urease and β-glucosidase activities correlated strongly. Activities of both enzymes correlated significantly and positively with carbon, NO3− and pH, with urease correlated more strongly than β-glucosidase. Only urease correlated with root density. Organic orchard floor management practices may be more effective than CON practices in promoting microbial enzyme activities in the 0–30 cm soil depth intervals of Western Cape apple orchard soils.
- Full Text:
- Date Issued: 2015
- Authors: Meyer, André H , Wooldridge, John , Dames, Joanna F
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/444051 , vital:74181 , https://doi.org/10.1080/02571862.2015.1053155
- Description: The effects of conventional (CON; utilising synthetic fertiliser and herbicide) and organic (ORG; nutrients supplied in compost, weeds controlled with straw mulch) orchard floor management practices on depth-wise variation in urease and β-glucosidase activities in tree-row soils were compared in a Western Cape ‘Cripp's Pink’/M7 apple orchard. Urease and β-glucosidase activities were determined spectrophotometrically in soils from five depth intervals from the walls of trenches excavated across the tree rows after seven years of treatment application. Soil pH, organic carbon, nitrate (NO3 ) and ammonium (NH4 ) nitrogen were also determined, as was root density. Enzyme activities were higher in the ORG than the CON topsoils but did not differ significantly (p = 0.05) at depths >30 cm. The positive effects of the ORG treatments were attributed to the liming effect and carbon and nitrogen contributions of the compost. Urease and β-glucosidase activities correlated strongly. Activities of both enzymes correlated significantly and positively with carbon, NO3− and pH, with urease correlated more strongly than β-glucosidase. Only urease correlated with root density. Organic orchard floor management practices may be more effective than CON practices in promoting microbial enzyme activities in the 0–30 cm soil depth intervals of Western Cape apple orchard soils.
- Full Text:
- Date Issued: 2015
Venerating death
- Authors: Jones, Ward E
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/275749 , vital:55076 , xlink:href="https://doi.org/10.1080/05568641.2015.1014540"
- Description: In this paper, I am concerned with elucidating and expanding our attitudes toward our own death. As it is, our common attitudes toward our death are the following: we fear our premature death, and we dread our inevitable death. These attitudes are rational, but I want to argue that our attitudes toward death should be more complicated than this. A condition upon our value, our preciousness, as creatures is that we are vulnerable, and our vulnerability is, at bottom, a vulnerability to death. A corollary of this is that we could not be loved, either by ourselves or by others, for one cannot love—be concerned for—a being invulnerable to death. As a consequence, death plays a deep and abiding role in our value systems. Our susceptibility to premature and inevitable death is a condition upon our being valuable creatures and, in turn, it is a condition upon our being loved. Given the high value that we place on being valuable creatures who deserve love, we should equally place a high value on the constitutive conditions for being precious and loved. If, as I suggest, one of these conditions is that we will die, we should see our deaths not simply as something to fear or dread, but as something of great importance in our lives. Our deaths should be treated with awe, respect, and even praise.
- Full Text:
- Date Issued: 2015
- Authors: Jones, Ward E
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/275749 , vital:55076 , xlink:href="https://doi.org/10.1080/05568641.2015.1014540"
- Description: In this paper, I am concerned with elucidating and expanding our attitudes toward our own death. As it is, our common attitudes toward our death are the following: we fear our premature death, and we dread our inevitable death. These attitudes are rational, but I want to argue that our attitudes toward death should be more complicated than this. A condition upon our value, our preciousness, as creatures is that we are vulnerable, and our vulnerability is, at bottom, a vulnerability to death. A corollary of this is that we could not be loved, either by ourselves or by others, for one cannot love—be concerned for—a being invulnerable to death. As a consequence, death plays a deep and abiding role in our value systems. Our susceptibility to premature and inevitable death is a condition upon our being valuable creatures and, in turn, it is a condition upon our being loved. Given the high value that we place on being valuable creatures who deserve love, we should equally place a high value on the constitutive conditions for being precious and loved. If, as I suggest, one of these conditions is that we will die, we should see our deaths not simply as something to fear or dread, but as something of great importance in our lives. Our deaths should be treated with awe, respect, and even praise.
- Full Text:
- Date Issued: 2015
Visible light transformation of Rhodamine 6G using tetracarbazole zinc phthalocyanine when embedded in electrospun fibers and in the presence of ZnO and Ag particles
- Khoza, Phindile, Nyokong, Tebello
- Authors: Khoza, Phindile , Nyokong, Tebello
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/189456 , vital:44848 , xlink:href="https://doi.org/10.1080/00958972.2015.1013944"
- Description: Herein, we report the photocatalytic transformation of Rhodamine 6G (Rh 6G) using tetracarbazole zinc phthalocyanine (TCbZnPc) when alone or when conjugated with ZnO macroparticles (ZnOMPs) and silver nanoparticles (AgNPs), represented as TCbZnPc–ZnOMPs and TCbZnPc–AgNPs, respectively. The photocatalysts were supported onto electrospun polystyrene fibers. The efficiency of TCbZnPc was improved by the presence of both ZnOMPs and AgNPs. HPLC equipped with UV–vis was used to study phototransformation products. The mechanism of transformation was via the N-de-ethylation of Rh 6G.
- Full Text:
- Date Issued: 2015
- Authors: Khoza, Phindile , Nyokong, Tebello
- Date: 2015
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/189456 , vital:44848 , xlink:href="https://doi.org/10.1080/00958972.2015.1013944"
- Description: Herein, we report the photocatalytic transformation of Rhodamine 6G (Rh 6G) using tetracarbazole zinc phthalocyanine (TCbZnPc) when alone or when conjugated with ZnO macroparticles (ZnOMPs) and silver nanoparticles (AgNPs), represented as TCbZnPc–ZnOMPs and TCbZnPc–AgNPs, respectively. The photocatalysts were supported onto electrospun polystyrene fibers. The efficiency of TCbZnPc was improved by the presence of both ZnOMPs and AgNPs. HPLC equipped with UV–vis was used to study phototransformation products. The mechanism of transformation was via the N-de-ethylation of Rh 6G.
- Full Text:
- Date Issued: 2015
Visible Wars and Invisible Women: interrogating women's roles during wartime in Goretti Kyomuhendo's Waiting: a novel of Uganda at war
- Authors: Spencer, Lynda G
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/138880 , vital:37682 , https://0-hdl.handle.net.wam.seals.ac.za/10520/EJC177790
- Description: Goretti Kyomuhendo's Waiting: A Novel of Uganda at War explores the atrocities that ordinary people experience during wartime by placing emphasis on the private suffering and humiliation inflicted on women in the domestic space of the home. This article argues that even if women do not actively feature on the battleground, they are still inadvertently drawn into the war, which has an adverse impact on their lives. Kyomuhendo draws on the experiences of different female characters to problematize the inherently ambiguous symbolic image of the mother, and shows that the violence performed on women's bodies is a result of the interplay between two hegemonic forces, patriarchal authority and state power.
- Full Text:
- Date Issued: 2015
- Authors: Spencer, Lynda G
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/138880 , vital:37682 , https://0-hdl.handle.net.wam.seals.ac.za/10520/EJC177790
- Description: Goretti Kyomuhendo's Waiting: A Novel of Uganda at War explores the atrocities that ordinary people experience during wartime by placing emphasis on the private suffering and humiliation inflicted on women in the domestic space of the home. This article argues that even if women do not actively feature on the battleground, they are still inadvertently drawn into the war, which has an adverse impact on their lives. Kyomuhendo draws on the experiences of different female characters to problematize the inherently ambiguous symbolic image of the mother, and shows that the violence performed on women's bodies is a result of the interplay between two hegemonic forces, patriarchal authority and state power.
- Full Text:
- Date Issued: 2015