Aspects of the reproductive biology of monkfish Lophius vomerinus off Namibia
- Maartens, Lima, Booth, Anthony J
- Authors: Maartens, Lima , Booth, Anthony J
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/123831 , vital:35504 , https://doi.10.2989/18142320509504090
- Description: Aspects of the reproductive biology of monkfish Lophius vomerinus are described from material collected during hake Merluccius spp. biomass surveys and from commercial monkfish and sole Austroglossus microlepis vessels between January 1996 and June 2000 off Namibia at depths between 97m and 686m. Length-at-50% sexual maturity for males and females were estimated at 39.9cm and 58.2cm respectively, males maturing faster than females. The adult sex ratio of fish >50cm total length was strongly biased towards females. There was reproductive activity throughout the year, peaking slightly between autumn and spring.
- Full Text:
- Date Issued: 2010
- Authors: Maartens, Lima , Booth, Anthony J
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/123831 , vital:35504 , https://doi.10.2989/18142320509504090
- Description: Aspects of the reproductive biology of monkfish Lophius vomerinus are described from material collected during hake Merluccius spp. biomass surveys and from commercial monkfish and sole Austroglossus microlepis vessels between January 1996 and June 2000 off Namibia at depths between 97m and 686m. Length-at-50% sexual maturity for males and females were estimated at 39.9cm and 58.2cm respectively, males maturing faster than females. The adult sex ratio of fish >50cm total length was strongly biased towards females. There was reproductive activity throughout the year, peaking slightly between autumn and spring.
- Full Text:
- Date Issued: 2010
Assessment of antibiotic production by some marine actinomycetes belonging to the genera norcadia, saccharopolyspora and kibdellosporangium.
- Koba, Siziwe (https://orcid.org/0000-0002-6761-6403)
- Authors: Koba, Siziwe (https://orcid.org/0000-0002-6761-6403)
- Date: 2010
- Subjects: Actinobacteria , Bacteria , Actinomycetales
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/25811 , vital:64488
- Description: Antibacterial potency of the extracts of the three marine actinomycetes strains which were isolated in the Nahoon Beach and tentatively identified as the genera Norcadia, Kibdellosporingium and Saccharopolyspora were investigated in this study against a panel of referenced, environmental and clinical bacterial strains. The ethyl acetate extracts of these marine actinomycetes were screened for activity against 32 bacterial isolates. Out of the 32 organisms, 10 were susceptible to one or all the extracts used. Antibacterial activity was mainly observed against Gram-negative organisms with Minimum inhibitory concentration (MIC) values ranging from 0.078 mg/ml to >10mg/ml. The killing rates of the active extracts were also elucidated using standard procedures. The two extracts NO64 and NO53 showed rapid bactericidal activity against B. pumilus ATCC 14884 and Serratia marcens with a 3Log10 reduction in counts within 6 hours at 3.75 mg/ml and 5 mg/ml respectively. In conclusion, the ethyl acetate extract of these marine actinomycetes strains possess strong bactericidal and bacteriostatic activities against Gram negative organisms and can be therapeutically useful in the treatment of bacterial infections which are mainly caused by Gram negative bacteria. , Thesis (MA) -- Faculty of Science and Agriculture, 2010
- Full Text:
- Date Issued: 2010
- Authors: Koba, Siziwe (https://orcid.org/0000-0002-6761-6403)
- Date: 2010
- Subjects: Actinobacteria , Bacteria , Actinomycetales
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/25811 , vital:64488
- Description: Antibacterial potency of the extracts of the three marine actinomycetes strains which were isolated in the Nahoon Beach and tentatively identified as the genera Norcadia, Kibdellosporingium and Saccharopolyspora were investigated in this study against a panel of referenced, environmental and clinical bacterial strains. The ethyl acetate extracts of these marine actinomycetes were screened for activity against 32 bacterial isolates. Out of the 32 organisms, 10 were susceptible to one or all the extracts used. Antibacterial activity was mainly observed against Gram-negative organisms with Minimum inhibitory concentration (MIC) values ranging from 0.078 mg/ml to >10mg/ml. The killing rates of the active extracts were also elucidated using standard procedures. The two extracts NO64 and NO53 showed rapid bactericidal activity against B. pumilus ATCC 14884 and Serratia marcens with a 3Log10 reduction in counts within 6 hours at 3.75 mg/ml and 5 mg/ml respectively. In conclusion, the ethyl acetate extract of these marine actinomycetes strains possess strong bactericidal and bacteriostatic activities against Gram negative organisms and can be therapeutically useful in the treatment of bacterial infections which are mainly caused by Gram negative bacteria. , Thesis (MA) -- Faculty of Science and Agriculture, 2010
- Full Text:
- Date Issued: 2010
Assessment of the environmental condition, Ecosystem service provision and sustainability of use of two wetlands in the Kamiesberg uplands:
- Kotze, Donovan C, Malan, H, Ellery, William F N, Samuals, I, Saul, L
- Authors: Kotze, Donovan C , Malan, H , Ellery, William F N , Samuals, I , Saul, L
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/157135 , vital:40089 , http://www.wrc.org.za/wp-content/uploads/mdocs/TT439-09 Conservation of Water Ecosystems.pdf
- Description: This report is one of the outputs of the Wetland Health and Importance (WHI) research programme which was funded by the Water Research Commission. The WHI represents Phase II of the National Wetlands Research Programme and was formerly known as “Wetland Health and Integrity”. Phase I, under the leadership of Professor Ellery, resulted in the “WET-Management” series of publications. Phase II, the WHI programme, was broadly aimed at assessing wetland environmental condition and socio-economic importance.
- Full Text:
- Date Issued: 2010
- Authors: Kotze, Donovan C , Malan, H , Ellery, William F N , Samuals, I , Saul, L
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/157135 , vital:40089 , http://www.wrc.org.za/wp-content/uploads/mdocs/TT439-09 Conservation of Water Ecosystems.pdf
- Description: This report is one of the outputs of the Wetland Health and Importance (WHI) research programme which was funded by the Water Research Commission. The WHI represents Phase II of the National Wetlands Research Programme and was formerly known as “Wetland Health and Integrity”. Phase I, under the leadership of Professor Ellery, resulted in the “WET-Management” series of publications. Phase II, the WHI programme, was broadly aimed at assessing wetland environmental condition and socio-economic importance.
- Full Text:
- Date Issued: 2010
Assessment of the monkfish Lophius vomerinus resource off Namibia
- Maartens, Lima, Booth, Anthony J
- Authors: Maartens, Lima , Booth, Anthony J
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/123863 , vital:35509 , https://doi.10.2989/025776101784528926
- Description: Monkfish (Lophius vomerinus and L. vaillanti) constitute a commercially important resource off Namibia. During 1998, the Lophius resource was the fourth most important commercial resource in terms of landed mass (c. 17 000 tons) and the fifth most important commercial resource in terms of export value (U$19.8 million) of the Namibian fishing sector (Ministry of Fisheries and Marine Resources, Namibia, unpublished data). Historically, monkfish constituted an important bycatch in the trawl fishery directed at hake (Merluccius spp.), but due to increasing market demand since the early 1990s, a fishery directed at monkfish and sole (Austroglossus microlepis) has developed. The Namibian Ministry of Fisheries and Marine Resources has identified the need to develop a management plan to ensure the resource’s medium and longterm sustainability (Maartens et al. 1999). Long-term resource management plans include the identification of an assessment model to represent reality so that the implications of managing the resource in future under a range of assumptions about its present status and its future dynamics (Cochrane et al. 1998) can be examined. The aim of this study was, therefore, to assess the status of at least part of the monkfish resource using a length-based cohort assessment (Jones 1979, 1984, Sparre and Venema 1998) and an age structured production model (Punt 1994, Punt and Japp 1994, Booth and Punt 1998).
- Full Text:
- Date Issued: 2010
- Authors: Maartens, Lima , Booth, Anthony J
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/123863 , vital:35509 , https://doi.10.2989/025776101784528926
- Description: Monkfish (Lophius vomerinus and L. vaillanti) constitute a commercially important resource off Namibia. During 1998, the Lophius resource was the fourth most important commercial resource in terms of landed mass (c. 17 000 tons) and the fifth most important commercial resource in terms of export value (U$19.8 million) of the Namibian fishing sector (Ministry of Fisheries and Marine Resources, Namibia, unpublished data). Historically, monkfish constituted an important bycatch in the trawl fishery directed at hake (Merluccius spp.), but due to increasing market demand since the early 1990s, a fishery directed at monkfish and sole (Austroglossus microlepis) has developed. The Namibian Ministry of Fisheries and Marine Resources has identified the need to develop a management plan to ensure the resource’s medium and longterm sustainability (Maartens et al. 1999). Long-term resource management plans include the identification of an assessment model to represent reality so that the implications of managing the resource in future under a range of assumptions about its present status and its future dynamics (Cochrane et al. 1998) can be examined. The aim of this study was, therefore, to assess the status of at least part of the monkfish resource using a length-based cohort assessment (Jones 1979, 1984, Sparre and Venema 1998) and an age structured production model (Punt 1994, Punt and Japp 1994, Booth and Punt 1998).
- Full Text:
- Date Issued: 2010
at the conference in munich
- Authors: Krueger, Anton
- Date: 2010
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/229774 , vital:49709 , xlink:href="https://hdl.handle.net/10520/EJC47821"
- Full Text:
- Date Issued: 2010
- Authors: Krueger, Anton
- Date: 2010
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/229774 , vital:49709 , xlink:href="https://hdl.handle.net/10520/EJC47821"
- Full Text:
- Date Issued: 2010
Bandwidth management and monitoring for community networks
- Irwin, Barry V W, Siebörger, Ingrid, Wells, Daniel
- Authors: Irwin, Barry V W , Siebörger, Ingrid , Wells, Daniel
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/428040 , vital:72482 , https://www.researchgate.net/profile/Ingrid-Sieboerger/publication/265121154_Bandwidth_management_and_monitoring_for_community_networks/links/5e538b85458515072db7a686/Bandwidth-management-and-monitoring-for-community-networks.pdf
- Description: This paper describes a custom-built system to replace existing routing solutions within an identified community network. The community net-work in question shares a VSAT Internet connection to provide Internet access to a number of schools and their surrounding communities. This connection provides a limited resource which needs to be managed in order to ensure equitable use by members of the community. The community network originally lacked any form of bandwidth manage-ment or monitoring which often resulted in unfair use and abuse. The solution implemented is based on a client-server architecture. The Community Access Points (CAPs) are the client components which are located at each school; providing the computers and servers with ac-cess to the rest of the community network and the Internet. These nodes also perform a number of monitoring tasks for the computers at the schools. The server component is the Access Concentrator (AC) and connects the CAPs together using encrypted and authenticated PPPoE tunnels. The AC performs several additional monitoring func-tions, both on the individual links and on the upstream Internet connec-tion. The AC provides a means of effectively and centrally managing and allocating Internet bandwidth between the schools. The system that was developed has a number of features, including Quality of Service adjustments limiting network usage and fairly billing each school for their Internet use. The system provides an effective means for sharing bandwidth between users in a community network.
- Full Text:
- Date Issued: 2010
- Authors: Irwin, Barry V W , Siebörger, Ingrid , Wells, Daniel
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/428040 , vital:72482 , https://www.researchgate.net/profile/Ingrid-Sieboerger/publication/265121154_Bandwidth_management_and_monitoring_for_community_networks/links/5e538b85458515072db7a686/Bandwidth-management-and-monitoring-for-community-networks.pdf
- Description: This paper describes a custom-built system to replace existing routing solutions within an identified community network. The community net-work in question shares a VSAT Internet connection to provide Internet access to a number of schools and their surrounding communities. This connection provides a limited resource which needs to be managed in order to ensure equitable use by members of the community. The community network originally lacked any form of bandwidth manage-ment or monitoring which often resulted in unfair use and abuse. The solution implemented is based on a client-server architecture. The Community Access Points (CAPs) are the client components which are located at each school; providing the computers and servers with ac-cess to the rest of the community network and the Internet. These nodes also perform a number of monitoring tasks for the computers at the schools. The server component is the Access Concentrator (AC) and connects the CAPs together using encrypted and authenticated PPPoE tunnels. The AC performs several additional monitoring func-tions, both on the individual links and on the upstream Internet connec-tion. The AC provides a means of effectively and centrally managing and allocating Internet bandwidth between the schools. The system that was developed has a number of features, including Quality of Service adjustments limiting network usage and fairly billing each school for their Internet use. The system provides an effective means for sharing bandwidth between users in a community network.
- Full Text:
- Date Issued: 2010
Beyond teaching language: towards terminological primacy in learners' geometric conceptualisation
- Atebe, Humphrey U, Schäfer, Marc
- Authors: Atebe, Humphrey U , Schäfer, Marc
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/140960 , vital:37932 , https://0-hdl.handle.net.wam.seals.ac.za/10520/EJC20922
- Description: This paper reports on a specific aspect of a broader geometry conceptualisation study that sought to explore and explicate learners' knowledge of basic geometric terminology in selected Nigerian and South African high schools. It is framed by the notion that students' acquisition of the correct terminology in school geometry is important for their success in the subject. The original study further aimed to determine the relationship that might exist between a learner's ability in verbal geometry terminology tasks and his/her ability in visual geometry terminology tasks. A total of 144 learners (72 each from South Africa and Nigeria) were selected for the study, using both the stratified and the fish-bowl sampling techniques. A questionnaire consisting of a sixty-item multiple-choice objective test provided the data for the study. An overall percentage mean score of 44,17% obtained in the test indicated that learners in this study had only a limited knowledge of basic geometric terminology. The Nigerian subsample in the study had a weaker understanding of basic geometric terminology than their South African counterparts. Importantly, there were high positive correlations between participants' ability in verbal geometry terminology tasks and their ability in visual geometry terminology tasks. These results are consistent with those of several earlier studies, and provide a reasonably firm basis for certain recommendations to be made.
- Full Text:
- Date Issued: 2010
- Authors: Atebe, Humphrey U , Schäfer, Marc
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/140960 , vital:37932 , https://0-hdl.handle.net.wam.seals.ac.za/10520/EJC20922
- Description: This paper reports on a specific aspect of a broader geometry conceptualisation study that sought to explore and explicate learners' knowledge of basic geometric terminology in selected Nigerian and South African high schools. It is framed by the notion that students' acquisition of the correct terminology in school geometry is important for their success in the subject. The original study further aimed to determine the relationship that might exist between a learner's ability in verbal geometry terminology tasks and his/her ability in visual geometry terminology tasks. A total of 144 learners (72 each from South Africa and Nigeria) were selected for the study, using both the stratified and the fish-bowl sampling techniques. A questionnaire consisting of a sixty-item multiple-choice objective test provided the data for the study. An overall percentage mean score of 44,17% obtained in the test indicated that learners in this study had only a limited knowledge of basic geometric terminology. The Nigerian subsample in the study had a weaker understanding of basic geometric terminology than their South African counterparts. Importantly, there were high positive correlations between participants' ability in verbal geometry terminology tasks and their ability in visual geometry terminology tasks. These results are consistent with those of several earlier studies, and provide a reasonably firm basis for certain recommendations to be made.
- Full Text:
- Date Issued: 2010
Biodiversity research and conservation: careers
- Authors: Rosenberg, Eureta
- Date: 2010
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/391079 , vital:68615 , xlink:href="https://hdl.handle.net/10520/EJC89811"
- Description: It is the International Year of Biodiversity, and if you are interested in a career in biodiversity, there are many options from which to choose. This article introduces the dynamic and growing field of biodiversity management, research and conservation. It gives a taste of the varied careers that would suit different interests and talents and invites you to look with fresh eyes at the field and its possibilities.
- Full Text: false
- Date Issued: 2010
- Authors: Rosenberg, Eureta
- Date: 2010
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/391079 , vital:68615 , xlink:href="https://hdl.handle.net/10520/EJC89811"
- Description: It is the International Year of Biodiversity, and if you are interested in a career in biodiversity, there are many options from which to choose. This article introduces the dynamic and growing field of biodiversity management, research and conservation. It gives a taste of the varied careers that would suit different interests and talents and invites you to look with fresh eyes at the field and its possibilities.
- Full Text: false
- Date Issued: 2010
Bodies that belong: race and space in Elleke Boehmer's Nile Baby
- Authors: Marais, Mike
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/144094 , vital:38310 , DOI: 10.1080/00138398.2010.488337
- Description: South African literature has never been particularly perceptive in addressing the question of race. While this is especially true of writing of the apartheid period, not much has changed in the postapartheid years. Only rarely does one encounter a literary treatment of race that is aware of its performative, rather than essential, nature. Rarer still are works that are conscious of the ways in which we gain a sense of belonging by shaping our environments to affirm our raced subjectives.
- Full Text:
- Date Issued: 2010
- Authors: Marais, Mike
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/144094 , vital:38310 , DOI: 10.1080/00138398.2010.488337
- Description: South African literature has never been particularly perceptive in addressing the question of race. While this is especially true of writing of the apartheid period, not much has changed in the postapartheid years. Only rarely does one encounter a literary treatment of race that is aware of its performative, rather than essential, nature. Rarer still are works that are conscious of the ways in which we gain a sense of belonging by shaping our environments to affirm our raced subjectives.
- Full Text:
- Date Issued: 2010
Book Review: Black, white and grey: Ethics in South African journalism:
- Garman, Anthea, Mwale, Pascal N
- Authors: Garman, Anthea , Mwale, Pascal N
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/159968 , vital:40360 , DOI: 10.1080/02560054.2005.9653325
- Description: Book Review: Black, white and grey: Ethics in South African journalism by Franz Krüger Cape Town, Double Storey, 2004. Reviewed by Anthea Garman and Pascal N. Mwale.
- Full Text:
- Date Issued: 2010
- Authors: Garman, Anthea , Mwale, Pascal N
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/159968 , vital:40360 , DOI: 10.1080/02560054.2005.9653325
- Description: Book Review: Black, white and grey: Ethics in South African journalism by Franz Krüger Cape Town, Double Storey, 2004. Reviewed by Anthea Garman and Pascal N. Mwale.
- Full Text:
- Date Issued: 2010
Born-frees and worn trees: home grown medicinal plants and poverty
- Husselman, Madeleen, Cocks, Michelle L
- Authors: Husselman, Madeleen , Cocks, Michelle L
- Date: 2010
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/141464 , vital:37974 , ISBN 9781136886072 , DOI: 10.4324/9780203839645-19
- Description: Despite the widespread use of modern medicines, the parallel role of traditional medicine remains popular in both rural and urban areas and among both wealthy and poor African communities in South Africa. A substantial body of literature exists which documents some of the salient characteristics of the trade and use of traditional medicines (Ngubane 1977; Cocks and Wiersum 2002; Cocks and Møller 2002; Cocks and Dold 2006). Mander (1998) estimated that 27 million people used indigenous medicine in South Africa in a decade. The use and trade of plants for medicine is no longer confined to traditional healers but has entered both the informal and formal sectors of the South African economy (Dauskardt 1990, 1991; Cocks and Dold 2000), resulting in an increase in the number of herbal gatherers and traders (Dold and Cocks 2002). The largely informal trade in traditional medicines forms part of multi-million rand ‘hidden economy’ in southern Africa, and it is now bigger than at any time in the past. It is certainly one of the most complex resource management issues facing conservation agencies, healthcare professionals and resource users in South Africa today (Cunningham 1997). Research points towards a trend of increasing harvesting pressures on traditional supply areas linked to a growing shortage in supply of popular medicinal plant species (Williams et al. 1997, 2000; Mander 1998; Dold and Cocks 2002).
- Full Text:
- Date Issued: 2010
- Authors: Husselman, Madeleen , Cocks, Michelle L
- Date: 2010
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/141464 , vital:37974 , ISBN 9781136886072 , DOI: 10.4324/9780203839645-19
- Description: Despite the widespread use of modern medicines, the parallel role of traditional medicine remains popular in both rural and urban areas and among both wealthy and poor African communities in South Africa. A substantial body of literature exists which documents some of the salient characteristics of the trade and use of traditional medicines (Ngubane 1977; Cocks and Wiersum 2002; Cocks and Møller 2002; Cocks and Dold 2006). Mander (1998) estimated that 27 million people used indigenous medicine in South Africa in a decade. The use and trade of plants for medicine is no longer confined to traditional healers but has entered both the informal and formal sectors of the South African economy (Dauskardt 1990, 1991; Cocks and Dold 2000), resulting in an increase in the number of herbal gatherers and traders (Dold and Cocks 2002). The largely informal trade in traditional medicines forms part of multi-million rand ‘hidden economy’ in southern Africa, and it is now bigger than at any time in the past. It is certainly one of the most complex resource management issues facing conservation agencies, healthcare professionals and resource users in South Africa today (Cunningham 1997). Research points towards a trend of increasing harvesting pressures on traditional supply areas linked to a growing shortage in supply of popular medicinal plant species (Williams et al. 1997, 2000; Mander 1998; Dold and Cocks 2002).
- Full Text:
- Date Issued: 2010
Changing social imaginaries, multiplicities and ‘one sole world’: Reading Scandinavian environmental and sustainability education research papers with Badiou and Taylor at hand
- Authors: Lotz-Sisitka, Heila
- Date: 2010
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/182506 , vital:43836 , xlink:href="https://doi.org/10.1080/13504620903504081"
- Description: Badiou’s ontological work draws attention to multiplicities – the oneness of ontology, which he explains can only become ontologically differentiated into events or sites through political, artistic or amorous practices that philosophies can think and invent from. He also draws attention to the fusion of events and sites, and he explains that events (such as producing special issues of journals located in particular sites) are reflexive. He also tells us, however, that the reflexive structure of an artistic or scientific event (such as producing a special issue of a journal) is not always immediately evident. In writing this response article I work with this concept – and probe how the production of events (such as a special issue of a journal produced in a specific site) may be reflexive. This is the purpose of the article. This response article therefore probes some of the political, structural and intellectual processes that come to shape scholarship in different sites, and here I draw on the insights into social imaginaries provided by Charles Taylor to develop a perspective on the scholarship that is reflected in this journal. Through this, I seek to open the notion of multiplicities, oneness and the particularities of our social imaginaries as themes for thinking about educational scholarship events produced within and across geo‐physical, socio‐ecological and socio‐economic spaces in different parts of the world.
- Full Text:
- Date Issued: 2010
- Authors: Lotz-Sisitka, Heila
- Date: 2010
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/182506 , vital:43836 , xlink:href="https://doi.org/10.1080/13504620903504081"
- Description: Badiou’s ontological work draws attention to multiplicities – the oneness of ontology, which he explains can only become ontologically differentiated into events or sites through political, artistic or amorous practices that philosophies can think and invent from. He also draws attention to the fusion of events and sites, and he explains that events (such as producing special issues of journals located in particular sites) are reflexive. He also tells us, however, that the reflexive structure of an artistic or scientific event (such as producing a special issue of a journal) is not always immediately evident. In writing this response article I work with this concept – and probe how the production of events (such as a special issue of a journal produced in a specific site) may be reflexive. This is the purpose of the article. This response article therefore probes some of the political, structural and intellectual processes that come to shape scholarship in different sites, and here I draw on the insights into social imaginaries provided by Charles Taylor to develop a perspective on the scholarship that is reflected in this journal. Through this, I seek to open the notion of multiplicities, oneness and the particularities of our social imaginaries as themes for thinking about educational scholarship events produced within and across geo‐physical, socio‐ecological and socio‐economic spaces in different parts of the world.
- Full Text:
- Date Issued: 2010
Climate injustice: How should education respond?
- Authors: Lotz-Sisitka, Heila
- Date: 2010
- Subjects: To be catalogued
- Language: English
- Type: text , book chapter
- Identifier: http://hdl.handle.net/10962/437268 , vital:73364 , ISBN 9780203866399 , https://www.taylorfrancis.com/chapters/edit/10.4324/9780203866399-11/climate-injustice-education-respond-heila-lotz-sisitka
- Description: The Fourth Assessment Report of the Intergovernmental Panel on Cli-mate Change (IPCC 2007) identifi es Africa as one of the continents of the world most vulnerable to climate change. Africa’s vulnerability to climate change is aggravated by the interaction of multiple stresses such as poverty, poor governance, and weak institutions, limited access to capi-tal (including technology), ecosystem degradation, confl ict and disasters (UNEP 2006), and a generally poor quality of education (UNESCO 2004). The climate injustices and exacerbating circumstances experienced by poor and weak states today lie in the long-term historical emergence of a modern (and increasingly global) world order framed by a hegemonic Westphalian state system. This state system privileges exclusive, undi-vided sovereignty over a bounded territory (Fraser 2008), and is known more popularly as the ‘nation state’ system.
- Full Text:
- Date Issued: 2010
- Authors: Lotz-Sisitka, Heila
- Date: 2010
- Subjects: To be catalogued
- Language: English
- Type: text , book chapter
- Identifier: http://hdl.handle.net/10962/437268 , vital:73364 , ISBN 9780203866399 , https://www.taylorfrancis.com/chapters/edit/10.4324/9780203866399-11/climate-injustice-education-respond-heila-lotz-sisitka
- Description: The Fourth Assessment Report of the Intergovernmental Panel on Cli-mate Change (IPCC 2007) identifi es Africa as one of the continents of the world most vulnerable to climate change. Africa’s vulnerability to climate change is aggravated by the interaction of multiple stresses such as poverty, poor governance, and weak institutions, limited access to capi-tal (including technology), ecosystem degradation, confl ict and disasters (UNEP 2006), and a generally poor quality of education (UNESCO 2004). The climate injustices and exacerbating circumstances experienced by poor and weak states today lie in the long-term historical emergence of a modern (and increasingly global) world order framed by a hegemonic Westphalian state system. This state system privileges exclusive, undi-vided sovereignty over a bounded territory (Fraser 2008), and is known more popularly as the ‘nation state’ system.
- Full Text:
- Date Issued: 2010
Compactification of lattice-valued convergence spaces
- Authors: Jäger, Gunter
- Date: 2010
- Language: English
- Type: text , Article
- Identifier: vital:6828 , http://hdl.handle.net/10962/d1012339
- Description: We define compactness for stratified lattice-valued convergence spaces and show that a Tychonoff theorem is true. Further a generalization of the classical Richardson compactification is given. This compactification has a universal property.
- Full Text:
- Date Issued: 2010
- Authors: Jäger, Gunter
- Date: 2010
- Language: English
- Type: text , Article
- Identifier: vital:6828 , http://hdl.handle.net/10962/d1012339
- Description: We define compactness for stratified lattice-valued convergence spaces and show that a Tychonoff theorem is true. Further a generalization of the classical Richardson compactification is given. This compactification has a universal property.
- Full Text:
- Date Issued: 2010
Contemporary precision, bias and accuracy of minimum post-mortem intervals estimated using development of carrion-feeding insects
- Villet, Martin H, Richards, Cameron S, Midgley, John M
- Authors: Villet, Martin H , Richards, Cameron S , Midgley, John M
- Date: 2010
- Subjects: To be catalogued
- Language: English
- Type: text , book chapter
- Identifier: http://hdl.handle.net/10962/442769 , vital:74032 , ISBN 978-1-4020-9684-6 , https://doi.org/10.1007/978-1-4020-9684-6_7
- Description: Medicocriminal forensic entomology focuses primarily on providing evidence of the amount of time that a corpse or carcass has been exposed to colonization by insects, which helps to estimate the post mortem interval (PMI). Specifically, the estimate is of a minimum post mortem interval (PMImin), because death may occur a variable amount of time before colonization (Fig. 7.1); the maximum post mortem interval (PMImax) is estimated using the time that the person was last seen alive. Forensic entomology derives the bulk of its evidence from two sources: the ecological succession of carrion insect communities and the development of immature insects (Byrd and Castner 2001; Catts and Haskel 1990; Smith 1986). This chapter is concerned with assessing the confidence that can be placed in the accuracy of estimates derived from insect development. (Schoenly et al. 1996) dealt with this theme in succession-based estimates of PMImin.
- Full Text:
- Date Issued: 2010
- Authors: Villet, Martin H , Richards, Cameron S , Midgley, John M
- Date: 2010
- Subjects: To be catalogued
- Language: English
- Type: text , book chapter
- Identifier: http://hdl.handle.net/10962/442769 , vital:74032 , ISBN 978-1-4020-9684-6 , https://doi.org/10.1007/978-1-4020-9684-6_7
- Description: Medicocriminal forensic entomology focuses primarily on providing evidence of the amount of time that a corpse or carcass has been exposed to colonization by insects, which helps to estimate the post mortem interval (PMI). Specifically, the estimate is of a minimum post mortem interval (PMImin), because death may occur a variable amount of time before colonization (Fig. 7.1); the maximum post mortem interval (PMImax) is estimated using the time that the person was last seen alive. Forensic entomology derives the bulk of its evidence from two sources: the ecological succession of carrion insect communities and the development of immature insects (Byrd and Castner 2001; Catts and Haskel 1990; Smith 1986). This chapter is concerned with assessing the confidence that can be placed in the accuracy of estimates derived from insect development. (Schoenly et al. 1996) dealt with this theme in succession-based estimates of PMImin.
- Full Text:
- Date Issued: 2010
Contrivance with purpose?: International relations and the reconstitution of the international
- Authors: Bischoff, Paul, 1954-
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/161480 , vital:40631
- Description: In observing and plotting the dialectics of how our present world works, fragmenting as it integrates we struggle in wanting to pin down a moving target! Unlike the world of science with its physical laws, the social nature of the world and its relations across borders keep changing course with social and transnational relations constantly mutating. This makes it rather difficult to plot the complexity of human relations, also those across borders. As the late Nobel Laureate Herbert Simon once said, the social sciences are, after all, the really ‘hard’ sciences. They are so hard because they are so hard to explain.
- Full Text:
- Date Issued: 2010
- Authors: Bischoff, Paul, 1954-
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/161480 , vital:40631
- Description: In observing and plotting the dialectics of how our present world works, fragmenting as it integrates we struggle in wanting to pin down a moving target! Unlike the world of science with its physical laws, the social nature of the world and its relations across borders keep changing course with social and transnational relations constantly mutating. This makes it rather difficult to plot the complexity of human relations, also those across borders. As the late Nobel Laureate Herbert Simon once said, the social sciences are, after all, the really ‘hard’ sciences. They are so hard because they are so hard to explain.
- Full Text:
- Date Issued: 2010
Cretaceous volcanic rocks of the Namibe Basin, southern Angola: report on a reconnaissance field and geochemical investigation
- Authors: Marsh, Julian S
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/67301 , vital:29070
- Description: publisher version , Mafic alkaline lavas and intrusions occur in the onshore Namibe Basin in southern Angola. The distribution and field relationships of these igneous rocks have been mapped and described by Carvalho (1961). During a reconnaissance field visit in June 2009 a suite of samples was collected for further investigation.
- Full Text:
- Date Issued: 2010
- Authors: Marsh, Julian S
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/67301 , vital:29070
- Description: publisher version , Mafic alkaline lavas and intrusions occur in the onshore Namibe Basin in southern Angola. The distribution and field relationships of these igneous rocks have been mapped and described by Carvalho (1961). During a reconnaissance field visit in June 2009 a suite of samples was collected for further investigation.
- Full Text:
- Date Issued: 2010
Cultivating a scholarly community of practice
- Lotz-Sisitka, Heila, Ellery, Karen, Olvitt, Lausanne L, Schudel, Ingrid J, O'Donoghue, Rob B
- Authors: Lotz-Sisitka, Heila , Ellery, Karen , Olvitt, Lausanne L , Schudel, Ingrid J , O'Donoghue, Rob B
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/69777 , vital:29579 , https://hdl.handle.net/10520/EJC15102
- Description: In the field of Environment and Sustainability Education we are seeking ways of developing our teaching and supervision practices to enable social changes in a rapidly transforming field of practice where global issues of truth, judgement, justice and sustainability define our engagements with the public good. This article explores the process of cultivating a scholarly community of practice as a model of supervision that not only engages scholars in an intellectual community oriented towards socio-ecological transformation, but also extends and enhances dialogue with individuals on the technical and theoretical aspects of their postgraduate studies.
- Full Text: false
- Date Issued: 2010
- Authors: Lotz-Sisitka, Heila , Ellery, Karen , Olvitt, Lausanne L , Schudel, Ingrid J , O'Donoghue, Rob B
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/69777 , vital:29579 , https://hdl.handle.net/10520/EJC15102
- Description: In the field of Environment and Sustainability Education we are seeking ways of developing our teaching and supervision practices to enable social changes in a rapidly transforming field of practice where global issues of truth, judgement, justice and sustainability define our engagements with the public good. This article explores the process of cultivating a scholarly community of practice as a model of supervision that not only engages scholars in an intellectual community oriented towards socio-ecological transformation, but also extends and enhances dialogue with individuals on the technical and theoretical aspects of their postgraduate studies.
- Full Text: false
- Date Issued: 2010
Cultivation of medicinal plants as a tool for biodiversity conservation and poverty alleviation in the Amatola region, South Africa:
- Wiersum, K Freerk, Dold, Anthony P, Husselman, Madeleen, Cocks, Michelle L
- Authors: Wiersum, K Freerk , Dold, Anthony P , Husselman, Madeleen , Cocks, Michelle L
- Date: 2010
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/141489 , vital:37979 , ISBN 9781402054488 , https://library.wur.nl/ojs/index.php/frontis/issue/view/232
- Description: This paper describes the assumptions and results of a study to assess whether cultivation of medicinal plants can serve as a tool for combined biodiversity conservation and poverty alleviation. The study was carried out in the Amatola region of Eastern Cape, South Africa, where sustained beliefs in medicinal plant use, also under non-traditional conditions, has resulted in an increase in commercial demands. It was based on the assumption of poverty alleviation not only referring to an increase in income and labour, but also an increase in social capital and human dignity. The study assessed the local perceptions of the use and cultivation of medicinal plants and the need for conservation of these plants, as well as the features of already ongoing cultivation practices and options for increased cultivation. It consisted of participatory assessments in three villages involving around 250 persons and participatory trials with 14 rural women selling medicinal plants on urban markets. The study indicated that the growing demand for medicinal plants is related to the great cultural significance attached to medicinal plants.
- Full Text:
- Date Issued: 2010
- Authors: Wiersum, K Freerk , Dold, Anthony P , Husselman, Madeleen , Cocks, Michelle L
- Date: 2010
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/141489 , vital:37979 , ISBN 9781402054488 , https://library.wur.nl/ojs/index.php/frontis/issue/view/232
- Description: This paper describes the assumptions and results of a study to assess whether cultivation of medicinal plants can serve as a tool for combined biodiversity conservation and poverty alleviation. The study was carried out in the Amatola region of Eastern Cape, South Africa, where sustained beliefs in medicinal plant use, also under non-traditional conditions, has resulted in an increase in commercial demands. It was based on the assumption of poverty alleviation not only referring to an increase in income and labour, but also an increase in social capital and human dignity. The study assessed the local perceptions of the use and cultivation of medicinal plants and the need for conservation of these plants, as well as the features of already ongoing cultivation practices and options for increased cultivation. It consisted of participatory assessments in three villages involving around 250 persons and participatory trials with 14 rural women selling medicinal plants on urban markets. The study indicated that the growing demand for medicinal plants is related to the great cultural significance attached to medicinal plants.
- Full Text:
- Date Issued: 2010
Cyber security: Challenges and the way forward
- Ayofe, Azeez N, Irwin, Barry V W
- Authors: Ayofe, Azeez N , Irwin, Barry V W
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/428613 , vital:72524 , https://d1wqtxts1xzle7.cloudfront.net/62565276/171920200330-53981-1mqgyr5.pdf?1585592737=andresponse-content-disposi-tion=inline%3B+filename%3DCYBER_SECURITY_CHALLENGES_AND_THE_WAY_FO.pdfandExpires=1714729368andSignature=dPUCAd1sMUF-gyDTkBFb2lzDvkVNpfp0sk1z-CdAeHH6O759dBiO-M158drmJsOo1XtOJBY4tNd8Um2gi11zw4U8yEzHO-bGUJGJTJcooTXaKwZLT-wPqS779Qo2oeiQOIiuAx6zSdcfSGjbDfFOL1YWV9UeKvhtcnGJ3p-CjJAhiPWJorGn1-z8mO6oouWzyJYc0hV0-Po8yywJD60eC2S6llQmfNRpX4otgq4fgZwZu4TEcMUWPfBzGPFPNYcCLfiQVK0YLV~XdTCWrhTlYPSMzVSs~DhQk9QPBU7IGmzQkGZo3UXnNu1slCVLb9Dqm~9DSbmttIXIDGYXEjP9l4w__andKey-Pair-Id=APKAJLOHF5GGSLRBV4ZA
- Description: The high level of insecurity on the internet is becoming worrisome so much so that transaction on the web has become a thing of doubt. Cy-bercrime is becoming ever more serious and prevalent. Findings from 2002 Computer Crime and Security Survey show an upward trend that demonstrates a need for a timely review of existing approaches to fighting this new phenomenon in the information age. In this paper, we provide an overview of Cybercrime and present an international per-spective on fighting Cybercrime. This work seeks to define the concept of cyber-crime, explain tools being used by the criminals to perpetrate their evil handiworks, identify reasons for cyber-crime, how it can be eradicated, look at those involved and the reasons for their involve-ment, we would look at how best to detect a criminal mail and in conclu-sion, proffer recommendations that would help in checking the increas-ing rate of cyber-crimes and criminals.
- Full Text:
- Date Issued: 2010
- Authors: Ayofe, Azeez N , Irwin, Barry V W
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/428613 , vital:72524 , https://d1wqtxts1xzle7.cloudfront.net/62565276/171920200330-53981-1mqgyr5.pdf?1585592737=andresponse-content-disposi-tion=inline%3B+filename%3DCYBER_SECURITY_CHALLENGES_AND_THE_WAY_FO.pdfandExpires=1714729368andSignature=dPUCAd1sMUF-gyDTkBFb2lzDvkVNpfp0sk1z-CdAeHH6O759dBiO-M158drmJsOo1XtOJBY4tNd8Um2gi11zw4U8yEzHO-bGUJGJTJcooTXaKwZLT-wPqS779Qo2oeiQOIiuAx6zSdcfSGjbDfFOL1YWV9UeKvhtcnGJ3p-CjJAhiPWJorGn1-z8mO6oouWzyJYc0hV0-Po8yywJD60eC2S6llQmfNRpX4otgq4fgZwZu4TEcMUWPfBzGPFPNYcCLfiQVK0YLV~XdTCWrhTlYPSMzVSs~DhQk9QPBU7IGmzQkGZo3UXnNu1slCVLb9Dqm~9DSbmttIXIDGYXEjP9l4w__andKey-Pair-Id=APKAJLOHF5GGSLRBV4ZA
- Description: The high level of insecurity on the internet is becoming worrisome so much so that transaction on the web has become a thing of doubt. Cy-bercrime is becoming ever more serious and prevalent. Findings from 2002 Computer Crime and Security Survey show an upward trend that demonstrates a need for a timely review of existing approaches to fighting this new phenomenon in the information age. In this paper, we provide an overview of Cybercrime and present an international per-spective on fighting Cybercrime. This work seeks to define the concept of cyber-crime, explain tools being used by the criminals to perpetrate their evil handiworks, identify reasons for cyber-crime, how it can be eradicated, look at those involved and the reasons for their involve-ment, we would look at how best to detect a criminal mail and in conclu-sion, proffer recommendations that would help in checking the increas-ing rate of cyber-crimes and criminals.
- Full Text:
- Date Issued: 2010