Floral resources of Apis mellifera capensis in the fynbos biome in the Eastern Cape Province, South Africa
- Addi, A, Phillipson, P, Hepburn, H Randall
- Authors: Addi, A , Phillipson, P , Hepburn, H Randall
- Date: 2006
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/451845 , vital:75081 , https://hdl.handle.net/10520/EJC32660
- Description: The plant species utilized by Cape honeybees, Apis mellifera capensis, as primary nectar and pollen sources were studied in the Eastern Cape Province in an area where fynbos vegetation mingles with grassland communities. From direct field observations and analyses of pollen loads collected by foragers, 54 plant species were identified as nectar and pollen sources. Of 37 endemic and exotic pollen source plants, Metalasia muricata, Eucalyptus grandis, E. camadulensis, Erica chamissonis, Helichrysum odoratissimum, H. anomalum, Crassula cultrata and Acacia longifolia were dominant species.
- Full Text:
- Date Issued: 2006
- Authors: Addi, A , Phillipson, P , Hepburn, H Randall
- Date: 2006
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/451845 , vital:75081 , https://hdl.handle.net/10520/EJC32660
- Description: The plant species utilized by Cape honeybees, Apis mellifera capensis, as primary nectar and pollen sources were studied in the Eastern Cape Province in an area where fynbos vegetation mingles with grassland communities. From direct field observations and analyses of pollen loads collected by foragers, 54 plant species were identified as nectar and pollen sources. Of 37 endemic and exotic pollen source plants, Metalasia muricata, Eucalyptus grandis, E. camadulensis, Erica chamissonis, Helichrysum odoratissimum, H. anomalum, Crassula cultrata and Acacia longifolia were dominant species.
- Full Text:
- Date Issued: 2006
Educated mother-tongue South African English: A corpus approach
- Adendorff, Ralph, de Klerk, Vivian A, de Vos, Mark, Hunt, Sally, Simango, Ronald, Todd, Louise, Niesler, Thomas
- Authors: Adendorff, Ralph , de Klerk, Vivian A , de Vos, Mark , Hunt, Sally , Simango, Ronald , Todd, Louise , Niesler, Thomas
- Date: 2008
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/124352 , vital:35597 , https://doi.org/10.1080/10228190608566261
- Description: South Africa is anecdotally known for its complex system of speech varieties correlating with variables such as ethnicity, first language, class and education. These intuitions (e.g. Lass 1990) require further investigation, especially in the context of a changing South Africa where language variety plays a key role in identifying social, economic and ethnic group membership. Thus, in this research, the extent to which these variables play a role in variety is explored using a corpus approach (the nature of class and race in the corpus is discussed more fully later in the article). The corpus project, focusing primarily on accent, has been undertaken by members of the Department of English Language and Linguistics at Rhodes University in South Africa, collaborating with staff from the Department of Electrical and Electronic Engineering from Stellenbosch University, South Africa. A corpus (the first of its kind) is being compiled, comprising the speech of educated, white, mother-tongue speakers of South African English (as distinct from Afrikaans English, Indian English, and the second language (L2) varieties of English used by speakers of indigenous African languages), and data collection is well under way. This short article aims to describe the aims of the project, and the methodological approach which underpins it, as well as to highlight some of the more problematic aspects of the research.
- Full Text:
- Date Issued: 2008
- Authors: Adendorff, Ralph , de Klerk, Vivian A , de Vos, Mark , Hunt, Sally , Simango, Ronald , Todd, Louise , Niesler, Thomas
- Date: 2008
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/124352 , vital:35597 , https://doi.org/10.1080/10228190608566261
- Description: South Africa is anecdotally known for its complex system of speech varieties correlating with variables such as ethnicity, first language, class and education. These intuitions (e.g. Lass 1990) require further investigation, especially in the context of a changing South Africa where language variety plays a key role in identifying social, economic and ethnic group membership. Thus, in this research, the extent to which these variables play a role in variety is explored using a corpus approach (the nature of class and race in the corpus is discussed more fully later in the article). The corpus project, focusing primarily on accent, has been undertaken by members of the Department of English Language and Linguistics at Rhodes University in South Africa, collaborating with staff from the Department of Electrical and Electronic Engineering from Stellenbosch University, South Africa. A corpus (the first of its kind) is being compiled, comprising the speech of educated, white, mother-tongue speakers of South African English (as distinct from Afrikaans English, Indian English, and the second language (L2) varieties of English used by speakers of indigenous African languages), and data collection is well under way. This short article aims to describe the aims of the project, and the methodological approach which underpins it, as well as to highlight some of the more problematic aspects of the research.
- Full Text:
- Date Issued: 2008
Comparative efficiency of immobilized non-transition metal phthalocyanine photosensitizers for the visible light transformation of chlorophenols
- Agboola, Bolade, Ozoemena, Kenneth I, Nyokong, Tebello
- Authors: Agboola, Bolade , Ozoemena, Kenneth I , Nyokong, Tebello
- Date: 2006
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/286043 , vital:56233 , xlink:href="https://doi.org/10.1016/j.molcata.2005.12.009"
- Description: Photolysis of aqueous solutions of chlorophenols (4-chlorophenol, 2,4-dichlorophenol, 2,4,5-trichlorophenol and pentachlorophenol) in the presence of immobilized non-transition metal phthalocyanine photosensitizers onto Amberlite® is presented. The photosensitizers studied are: Al (AlOCPc) and Zn (ZnOCPc) octacarboxyphthalocyanines; Al (AlPcS4) and Zn (ZnPcS4) tetrasulfophthalocyanines; sulfonated phthalocyanine complexes (containing mixtures of differently substituted derivatives) of Al (AlPcSmix), Zn (ZnPcSmix), Ge (GePcSmix), Si (SiPcSmix) and Sn (SnPcSmix). Photolysis of the chlorophenols resulted mainly in the formation of chlorobenzoquinone derivatives. The complexes showed order of activity towards the transformation of pentachlorophenol as follows: ZnOCPc > SiPcSmix > SnPcSmix > ZnPcSmix > GePcSmix > ZnPcS4 > AlPcSmix > AlOCPc > AlPcS4. The generation of singlet oxygen (1O2) by these immobilized MPc photosensitizers was found to play a major role in their photoactivities towards the transformation of these chlorophenols. Langmuir–Hinshelwood (L–H) kinetic model studies showed that the ZnOCPc, GePcSmix and ZnPcSmix photocatalysis occurred on the catalysts surface. © 2005 Elsevier B.V. All rights reserved.
- Full Text:
- Date Issued: 2006
- Authors: Agboola, Bolade , Ozoemena, Kenneth I , Nyokong, Tebello
- Date: 2006
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/286043 , vital:56233 , xlink:href="https://doi.org/10.1016/j.molcata.2005.12.009"
- Description: Photolysis of aqueous solutions of chlorophenols (4-chlorophenol, 2,4-dichlorophenol, 2,4,5-trichlorophenol and pentachlorophenol) in the presence of immobilized non-transition metal phthalocyanine photosensitizers onto Amberlite® is presented. The photosensitizers studied are: Al (AlOCPc) and Zn (ZnOCPc) octacarboxyphthalocyanines; Al (AlPcS4) and Zn (ZnPcS4) tetrasulfophthalocyanines; sulfonated phthalocyanine complexes (containing mixtures of differently substituted derivatives) of Al (AlPcSmix), Zn (ZnPcSmix), Ge (GePcSmix), Si (SiPcSmix) and Sn (SnPcSmix). Photolysis of the chlorophenols resulted mainly in the formation of chlorobenzoquinone derivatives. The complexes showed order of activity towards the transformation of pentachlorophenol as follows: ZnOCPc > SiPcSmix > SnPcSmix > ZnPcSmix > GePcSmix > ZnPcS4 > AlPcSmix > AlOCPc > AlPcS4. The generation of singlet oxygen (1O2) by these immobilized MPc photosensitizers was found to play a major role in their photoactivities towards the transformation of these chlorophenols. Langmuir–Hinshelwood (L–H) kinetic model studies showed that the ZnOCPc, GePcSmix and ZnPcSmix photocatalysis occurred on the catalysts surface. © 2005 Elsevier B.V. All rights reserved.
- Full Text:
- Date Issued: 2006
Vice Chancellor New staff welcome address, 2006
- Authors: Badat, Saleem
- Date: 2006
- Subjects: Rhodes University
- Language: English
- Type: text
- Identifier: vital:7645 , http://hdl.handle.net/10962/d1015773
- Full Text:
- Date Issued: 2006
- Authors: Badat, Saleem
- Date: 2006
- Subjects: Rhodes University
- Language: English
- Type: text
- Identifier: vital:7645 , http://hdl.handle.net/10962/d1015773
- Full Text:
- Date Issued: 2006
Site of struggle: the Freedom Park fracas and the divisive legacy of South Africa’s Border War/Liberation Struggle
- Authors: Baines, Gary F
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/126954 , vital:35938 , https://doi.10.1080/02533950903076428
- Description: In South Africa, Carcharias taurus is commonly known as the ragged-tooth shark or raggie. The species is also referred to as the sand-tiger shark in North America and as the grey-nurse shark in Australia. It is a long-lived species with an estimated longevity of up to 40 years (Goldman 2002). Female sharks reach sexual maturity at approximately 10 years (Goldman 2002), and they exhibit a biennial reproductive cycle (Branstetter and Musick 1994, Lucifora et al. 2002, G Cliff, Natal Sharks Board, unpublished data). Intra-uterine cannibalisation results in a maximum fecundity of two pups per litter after a gestation period of approximately 9–12 months (Bass et al. 1975, Gilmore et al. 1983). These life-history characteristics make this species particularly susceptible to overexploitation.
- Full Text:
- Date Issued: 2010
- Authors: Baines, Gary F
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/126954 , vital:35938 , https://doi.10.1080/02533950903076428
- Description: In South Africa, Carcharias taurus is commonly known as the ragged-tooth shark or raggie. The species is also referred to as the sand-tiger shark in North America and as the grey-nurse shark in Australia. It is a long-lived species with an estimated longevity of up to 40 years (Goldman 2002). Female sharks reach sexual maturity at approximately 10 years (Goldman 2002), and they exhibit a biennial reproductive cycle (Branstetter and Musick 1994, Lucifora et al. 2002, G Cliff, Natal Sharks Board, unpublished data). Intra-uterine cannibalisation results in a maximum fecundity of two pups per litter after a gestation period of approximately 9–12 months (Bass et al. 1975, Gilmore et al. 1983). These life-history characteristics make this species particularly susceptible to overexploitation.
- Full Text:
- Date Issued: 2010
Alternative media: a viable option for Southern Africa?
- Authors: Banda, Fackson
- Date: 2006
- Language: English
- Type: text , article
- Identifier: vital:6328 , http://hdl.handle.net/10962/d1008473 , https://core.ac.uk/download/pdf/145046852.pdf
- Description: preprint , The article attempts a historically and culturally based definition of alternative media. It then gives some case studies to illustrate the efficacy of such media forms, apart from highlighting the problems associated with them. It concludes that alternative media emerge to deal with specific ideological projects and, as such, must be viewed as satisfying a specific need at a specific point in time.
- Full Text:
- Date Issued: 2006
- Authors: Banda, Fackson
- Date: 2006
- Language: English
- Type: text , article
- Identifier: vital:6328 , http://hdl.handle.net/10962/d1008473 , https://core.ac.uk/download/pdf/145046852.pdf
- Description: preprint , The article attempts a historically and culturally based definition of alternative media. It then gives some case studies to illustrate the efficacy of such media forms, apart from highlighting the problems associated with them. It concludes that alternative media emerge to deal with specific ideological projects and, as such, must be viewed as satisfying a specific need at a specific point in time.
- Full Text:
- Date Issued: 2006
Commentary: Negotiating distant influences: globalization and broadcasting policy reforms in Zambia and South Africa
- Authors: Banda, Fackson
- Date: 2006
- Language: English
- Type: text , article
- Identifier: vital:6325 , http://hdl.handle.net/10962/d1008299 , https://doi.org/10.22230/cjc.2006v31n2a1785
- Description: preprint , This commentary looks at the influences of globalisation on broadcasting policy reforms in Zambia and South Africa, with specific focus on such processes as deregulation, privatisation, commercialisation, communitarianism and technological convergence. It concludes that globalisation does not affect southern African countries uniformly; rather, it is refracted in accordance with the different cultural and political experiences of such countries.
- Full Text:
- Date Issued: 2006
- Authors: Banda, Fackson
- Date: 2006
- Language: English
- Type: text , article
- Identifier: vital:6325 , http://hdl.handle.net/10962/d1008299 , https://doi.org/10.22230/cjc.2006v31n2a1785
- Description: preprint , This commentary looks at the influences of globalisation on broadcasting policy reforms in Zambia and South Africa, with specific focus on such processes as deregulation, privatisation, commercialisation, communitarianism and technological convergence. It concludes that globalisation does not affect southern African countries uniformly; rather, it is refracted in accordance with the different cultural and political experiences of such countries.
- Full Text:
- Date Issued: 2006
Graph matching with subdivision surfaces for texture synthesis on surfaces
- Bangay, Shaun D, Morkel, Chantelle
- Authors: Bangay, Shaun D , Morkel, Chantelle
- Date: 2006
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/433351 , vital:72964 , https://doi.org/10.1145/1108590.1108601
- Description: Existing texture synthesis-from example strategies for polygon meshes typically make use of three components: a multi-resolution mesh hierarchy that allows the overall nature of the pattern to be reproduced before filling in detail; a matching strategy that extends the synthesized texture using the best fit from a texture sample; and a transfer mechanism that copies the selected portion of the texture sample to the target surface. We introduce novel alternatives for each of these components. Use of √2-subdivision surfaces provides the mesh hierarchy and allows fine control over the surface complexity. Adaptive subdivision is used to create an even vertex distribution over the surface. Use of the graph defined by a surface region for matching, rather than a regular texture neighbourhood, provides for flexible control over the scale of the texture and allows simultaneous matching against multiple levels of an image pyramid created from the texture sample. We use graph cuts for texture transfer, adapting this scheme to the context of surface synthesis. The resulting surface textures are realistic, tolerant of local mesh detail and are comparable to results produced by texture neighbourhood sampling approaches.
- Full Text:
- Date Issued: 2006
- Authors: Bangay, Shaun D , Morkel, Chantelle
- Date: 2006
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/433351 , vital:72964 , https://doi.org/10.1145/1108590.1108601
- Description: Existing texture synthesis-from example strategies for polygon meshes typically make use of three components: a multi-resolution mesh hierarchy that allows the overall nature of the pattern to be reproduced before filling in detail; a matching strategy that extends the synthesized texture using the best fit from a texture sample; and a transfer mechanism that copies the selected portion of the texture sample to the target surface. We introduce novel alternatives for each of these components. Use of √2-subdivision surfaces provides the mesh hierarchy and allows fine control over the surface complexity. Adaptive subdivision is used to create an even vertex distribution over the surface. Use of the graph defined by a surface region for matching, rather than a regular texture neighbourhood, provides for flexible control over the scale of the texture and allows simultaneous matching against multiple levels of an image pyramid created from the texture sample. We use graph cuts for texture transfer, adapting this scheme to the context of surface synthesis. The resulting surface textures are realistic, tolerant of local mesh detail and are comparable to results produced by texture neighbourhood sampling approaches.
- Full Text:
- Date Issued: 2006
Suckers for numbers: journalism issues
- Authors: Brand, Robert
- Date: 2006
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/454521 , vital:75352 , https://hdl.handle.net/10520/EJC146162
- Description: Most media practitioners would agree that numeracy - a basic competence with numbers - is an essential skill in modern journalism. Without it, we can't fully understand the world we live in, or explain and interpret it for our audiences. Virtually every aspect of life these days is quanti-fied or measured by statistical or numerological data. Yet new research indicates that South African journalists are error-prone when it comes to numbers.
- Full Text:
- Date Issued: 2006
- Authors: Brand, Robert
- Date: 2006
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/454521 , vital:75352 , https://hdl.handle.net/10520/EJC146162
- Description: Most media practitioners would agree that numeracy - a basic competence with numbers - is an essential skill in modern journalism. Without it, we can't fully understand the world we live in, or explain and interpret it for our audiences. Virtually every aspect of life these days is quanti-fied or measured by statistical or numerological data. Yet new research indicates that South African journalists are error-prone when it comes to numbers.
- Full Text:
- Date Issued: 2006
Teacher education for Mathematical Literacy: a modelling approach
- Brown, Bruce J L, Schäfer, Marc
- Authors: Brown, Bruce J L , Schäfer, Marc
- Date: 2006
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/141040 , vital:37939 , DOI: 10.4102/pythagoras.v0i64.98
- Description: This paper reports on a study of the extent to which question design affects the solution strategies adopted by children when solving linear number pattern generalisation tasks presented in pictorial and numeric contexts. The research tool comprised a series of 22 pencil-and-paper exercises based on linear generalisation tasks set in both numeric and two-dimensional pictorial contexts. The responses to these linear generalisation questions were classified by means of stage descriptors as well as stage modifiers. The method or strategy adopted was analysed and classified into one of seven categories. In addition, a meta-analysis focused on the formula derived for the nth term in conjunction with its justification. The results of this study strongly support the notion that question design can play a critical role in influencing learners' choice of strategy and level of attainment when solving pattern generalisation tasks. An understanding of the importance of appropriate question design has direct pedagogical application within the context of the mathematics classroom.
- Full Text:
- Date Issued: 2006
- Authors: Brown, Bruce J L , Schäfer, Marc
- Date: 2006
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/141040 , vital:37939 , DOI: 10.4102/pythagoras.v0i64.98
- Description: This paper reports on a study of the extent to which question design affects the solution strategies adopted by children when solving linear number pattern generalisation tasks presented in pictorial and numeric contexts. The research tool comprised a series of 22 pencil-and-paper exercises based on linear generalisation tasks set in both numeric and two-dimensional pictorial contexts. The responses to these linear generalisation questions were classified by means of stage descriptors as well as stage modifiers. The method or strategy adopted was analysed and classified into one of seven categories. In addition, a meta-analysis focused on the formula derived for the nth term in conjunction with its justification. The results of this study strongly support the notion that question design can play a critical role in influencing learners' choice of strategy and level of attainment when solving pattern generalisation tasks. An understanding of the importance of appropriate question design has direct pedagogical application within the context of the mathematics classroom.
- Full Text:
- Date Issued: 2006
Deelname Aan Die Bestuur Van Waterhulpbronne In Suid-Afrika
- Burt, Jane C, du Toit, Derick, Neves, David, Pollard, Sharon, Berold, Robert, Stanford, Mindy
- Authors: Burt, Jane C , du Toit, Derick , Neves, David , Pollard, Sharon , Berold, Robert , Stanford, Mindy
- Date: 2006
- Subjects: To be catalogued
- Language: English
- Type: text , report
- Identifier: http://hdl.handle.net/10962/437569 , vital:73394 , ISBN 1-77005-501-0 , https://wrcwebsite.azurewebsites.net/wp-content/uploads/mdocs/TT288-06.pdf
- Description: Die Nasionale Waterwet (1998) maak dit moontlik vir gewone mense om deel te neem aan die bestuur van waterhulpbronne. Hierdie boek bespreek wat deelname in die praktyk beteken. Die navorsing vir hierdie boek is tussen 2003 en 2005 gedoen deur ‘n groep deskundiges in die bestuur van water as hulpbron. Die navorsers het tot twee belangrike gevolgtrekkings gekom, naamlik: 1. Hoe ons die konsep ‘deelname’ verstaan, het ‘n direkte invloed op hoe ons water as hulpbron bestuur. Daarom is dit nodig om ons kennis en ervaring van deelname in die bestuur van wa-terhulpbronne te verdiep. 2. Ons het praktiese riglyne nodig wanneer ons deelname in die bestuur van waterhulpbronne beplan, maar hierdie riglyne behoort buigbaar te wees sodat die aard van die deelname by elke situasie of konteks kan aanpas.
- Full Text:
- Date Issued: 2006
- Authors: Burt, Jane C , du Toit, Derick , Neves, David , Pollard, Sharon , Berold, Robert , Stanford, Mindy
- Date: 2006
- Subjects: To be catalogued
- Language: English
- Type: text , report
- Identifier: http://hdl.handle.net/10962/437569 , vital:73394 , ISBN 1-77005-501-0 , https://wrcwebsite.azurewebsites.net/wp-content/uploads/mdocs/TT288-06.pdf
- Description: Die Nasionale Waterwet (1998) maak dit moontlik vir gewone mense om deel te neem aan die bestuur van waterhulpbronne. Hierdie boek bespreek wat deelname in die praktyk beteken. Die navorsing vir hierdie boek is tussen 2003 en 2005 gedoen deur ‘n groep deskundiges in die bestuur van water as hulpbron. Die navorsers het tot twee belangrike gevolgtrekkings gekom, naamlik: 1. Hoe ons die konsep ‘deelname’ verstaan, het ‘n direkte invloed op hoe ons water as hulpbron bestuur. Daarom is dit nodig om ons kennis en ervaring van deelname in die bestuur van wa-terhulpbronne te verdiep. 2. Ons het praktiese riglyne nodig wanneer ons deelname in die bestuur van waterhulpbronne beplan, maar hierdie riglyne behoort buigbaar te wees sodat die aard van die deelname by elke situasie of konteks kan aanpas.
- Full Text:
- Date Issued: 2006
U Ho Ba Le Seabo Taolong Ya Mehlodi Ya Metsi Afrika Borwa
- Burt, Jane C, du Toit, Derick, Neves, David, Pollard, Sharon, Berold, Robert, Stanford, Mindy
- Authors: Burt, Jane C , du Toit, Derick , Neves, David , Pollard, Sharon , Berold, Robert , Stanford, Mindy
- Date: 2006
- Subjects: To be catalogued
- Language: English
- Type: text , report
- Identifier: http://hdl.handle.net/10962/437625 , vital:73398 , ISBN 1-77005-503-7 , https://wrcwebsite.azurewebsites.net/wp-content/uploads/mdocs/TT290-06.pdf
- Description: Molao wa Naha wa Metsi (1998) o neha batho monyetla wa ho ba le seabo Taolong ya Mehlodi ya Metsi. Buka ena e bua ka se bolelwang ke ho ba le seabo. Diphuputso tsa buka ena di entswe ke sehlopha sa basebetsi ba diprofeshenale tsa Taolo ya Mehlodi ya Metsi mahareng a 2003 le 2005. Bafuputsi ba ile ba fihlela diqeto tsa bohlokwa tse pedi: 1. Kutlwisiso ya rona ya mohopolo wa “ho ba le seabo” e ama ka ho toba tsela eo re laolang mehlodi ya rona ya metsi. Ka hoo re lokela ho tebisa tsebo ya rona le boiphihlelo ba ho ba le seabo Taolong ya Mehlodi ya Metsi. 2. Re hloka tataiso e sebetsang ha re rera ho ba le seabo Taolong ya Mehlodi ya Metsi, empa tataiso ena e tshwanela ho kgona ho fetoha le mabaka hore mofuta wa ho ba le seabo o tshwanelehe bakeng sa boemo kapa ketsahalo ka nngwe.
- Full Text:
- Date Issued: 2006
- Authors: Burt, Jane C , du Toit, Derick , Neves, David , Pollard, Sharon , Berold, Robert , Stanford, Mindy
- Date: 2006
- Subjects: To be catalogued
- Language: English
- Type: text , report
- Identifier: http://hdl.handle.net/10962/437625 , vital:73398 , ISBN 1-77005-503-7 , https://wrcwebsite.azurewebsites.net/wp-content/uploads/mdocs/TT290-06.pdf
- Description: Molao wa Naha wa Metsi (1998) o neha batho monyetla wa ho ba le seabo Taolong ya Mehlodi ya Metsi. Buka ena e bua ka se bolelwang ke ho ba le seabo. Diphuputso tsa buka ena di entswe ke sehlopha sa basebetsi ba diprofeshenale tsa Taolo ya Mehlodi ya Metsi mahareng a 2003 le 2005. Bafuputsi ba ile ba fihlela diqeto tsa bohlokwa tse pedi: 1. Kutlwisiso ya rona ya mohopolo wa “ho ba le seabo” e ama ka ho toba tsela eo re laolang mehlodi ya rona ya metsi. Ka hoo re lokela ho tebisa tsebo ya rona le boiphihlelo ba ho ba le seabo Taolong ya Mehlodi ya Metsi. 2. Re hloka tataiso e sebetsang ha re rera ho ba le seabo Taolong ya Mehlodi ya Metsi, empa tataiso ena e tshwanela ho kgona ho fetoha le mabaka hore mofuta wa ho ba le seabo o tshwanelehe bakeng sa boemo kapa ketsahalo ka nngwe.
- Full Text:
- Date Issued: 2006
Participation in Water Resource Management: Book One
- Burt, Jane C, du Toit, Derick, Neves, David, Pollard, Sharon, Berold, Robert, Stanford, Mindy
- Authors: Burt, Jane C , du Toit, Derick , Neves, David , Pollard, Sharon , Berold, Robert , Stanford, Mindy
- Date: 2006
- Subjects: To be catalogued
- Language: English
- Type: text , report
- Identifier: http://hdl.handle.net/10962/437641 , vital:73399 , ISBN 1-77005-506-1 , https://wrcwebsite.azurewebsites.net/wp-content/uploads/mdocs/TT293-06.pdf
- Description: The National Water Act (1998) opens the way for ordinary people to take part in water resource management (WRM). This is a significant move towards a more so-cial orientation and away from an approach that focused almost exclusively on the technical aspects of WRM. This set of two books asks what a social orientation means in practice. Since the National Water Act became law in 1998, how have WRM practitioners involved people in the process of managing water? What have we learnt so far? And how can we use these lessons to move forward? The content of the books is based on research that looked in some depth at national and local participatory practice in South Africa, and also broadly at international trends. The research was conducted by three WRM practitioners and two researchers in the field of participatory approaches.
- Full Text:
- Date Issued: 2006
- Authors: Burt, Jane C , du Toit, Derick , Neves, David , Pollard, Sharon , Berold, Robert , Stanford, Mindy
- Date: 2006
- Subjects: To be catalogued
- Language: English
- Type: text , report
- Identifier: http://hdl.handle.net/10962/437641 , vital:73399 , ISBN 1-77005-506-1 , https://wrcwebsite.azurewebsites.net/wp-content/uploads/mdocs/TT293-06.pdf
- Description: The National Water Act (1998) opens the way for ordinary people to take part in water resource management (WRM). This is a significant move towards a more so-cial orientation and away from an approach that focused almost exclusively on the technical aspects of WRM. This set of two books asks what a social orientation means in practice. Since the National Water Act became law in 1998, how have WRM practitioners involved people in the process of managing water? What have we learnt so far? And how can we use these lessons to move forward? The content of the books is based on research that looked in some depth at national and local participatory practice in South Africa, and also broadly at international trends. The research was conducted by three WRM practitioners and two researchers in the field of participatory approaches.
- Full Text:
- Date Issued: 2006
U Dzhenelela Kha Vhulanguli Ha Zwiko Zwa Madi
- Burt, Jane C, du Toit, Derick, Neves, David, Pollard, Sharon, Berold, Robert, Stanford, Mindy
- Authors: Burt, Jane C , du Toit, Derick , Neves, David , Pollard, Sharon , Berold, Robert , Stanford, Mindy
- Date: 2006
- Subjects: To be catalogued
- Language: English
- Type: text , report
- Identifier: http://hdl.handle.net/10962/437657 , vital:73400 , ISBN 1-77005-504-5 , https://wrcwebsite.azurewebsites.net/wp-content/uploads/mdocs/TT291-06.pdf
- Description: Mulayo wa Lushakawa Madi (1998) u vulela ndila vhathu zwavho uri vha kone u dzhenelela kha Ndangulo ya Zwiko zwa Madi (WRM). Bugu iyi i amba nga uri u shela mulennzhe kana u dzhenelela ndi mini kha nyito. Thodisiso ya bugu iyi yo yo itwa nga tshigwada tsha vho gudelaho Ndangulo ya Zwiko zwa Madi (WRM) vhukati ha 2003 na 2005. Vhatodisisi vho da na themendelo mbili dza ndeme: 1. Kupfesesele kwashu kwa ipfi “u dzhenelela” zwi tou vha na vhukwamani thwii na uri ri langa hani zwiko zwa madi. Zwenezwo ri tea u khwathisedza ndivho yashu na tshenzhemo kha u dzhenelela kha WRM.( Ndangulo ya Zwiko zwa Madi) 2. Ri toda tsivhudzo yo teaho musi ri tshi pulana u dzhenelela kha zwa zwa WRM, hone tsivhudzo iyi i tea u kona u shandukisea uri maitele a u dzhenelela avhe o teaho kha nyimele inwe nainwe kana dzothe. Bugu iyi yo khethekanywa nga kha zwipida zwivhili: Tshipida, thoho U dzhenelela kha Ndangulo ya Zwiko zwa Madi kha la Afrika Tshipembe , zwi sumbedza uri mihumbulo yo fhambanho ya vhathu na zwi anganyelwaho zwa tu-tuwedza uri vha nga langa hani zwiko zwa madi.
- Full Text:
- Date Issued: 2006
- Authors: Burt, Jane C , du Toit, Derick , Neves, David , Pollard, Sharon , Berold, Robert , Stanford, Mindy
- Date: 2006
- Subjects: To be catalogued
- Language: English
- Type: text , report
- Identifier: http://hdl.handle.net/10962/437657 , vital:73400 , ISBN 1-77005-504-5 , https://wrcwebsite.azurewebsites.net/wp-content/uploads/mdocs/TT291-06.pdf
- Description: Mulayo wa Lushakawa Madi (1998) u vulela ndila vhathu zwavho uri vha kone u dzhenelela kha Ndangulo ya Zwiko zwa Madi (WRM). Bugu iyi i amba nga uri u shela mulennzhe kana u dzhenelela ndi mini kha nyito. Thodisiso ya bugu iyi yo yo itwa nga tshigwada tsha vho gudelaho Ndangulo ya Zwiko zwa Madi (WRM) vhukati ha 2003 na 2005. Vhatodisisi vho da na themendelo mbili dza ndeme: 1. Kupfesesele kwashu kwa ipfi “u dzhenelela” zwi tou vha na vhukwamani thwii na uri ri langa hani zwiko zwa madi. Zwenezwo ri tea u khwathisedza ndivho yashu na tshenzhemo kha u dzhenelela kha WRM.( Ndangulo ya Zwiko zwa Madi) 2. Ri toda tsivhudzo yo teaho musi ri tshi pulana u dzhenelela kha zwa zwa WRM, hone tsivhudzo iyi i tea u kona u shandukisea uri maitele a u dzhenelela avhe o teaho kha nyimele inwe nainwe kana dzothe. Bugu iyi yo khethekanywa nga kha zwipida zwivhili: Tshipida, thoho U dzhenelela kha Ndangulo ya Zwiko zwa Madi kha la Afrika Tshipembe , zwi sumbedza uri mihumbulo yo fhambanho ya vhathu na zwi anganyelwaho zwa tu-tuwedza uri vha nga langa hani zwiko zwa madi.
- Full Text:
- Date Issued: 2006
Ukuthabatha Inxaxheba Kulawulo Lwemithombo Yamanzi Emzantsi Afrika
- Burt, Jane C, du Toit, Derick, Neves, David, Pollard, Sharon, Berold, Robert, Stanford, Mindy
- Authors: Burt, Jane C , du Toit, Derick , Neves, David , Pollard, Sharon , Berold, Robert , Stanford, Mindy
- Date: 2006
- Subjects: To be catalogued
- Language: English
- Type: text , report
- Identifier: http://hdl.handle.net/10962/437670 , vital:73401 , ISBN 1-77005-505-3 , https://wrcwebsite.azurewebsites.net/wp-content/uploads/mdocs/TT292-06.pdf
- Description: UmThetho weSizwe waManzi (National Water Act) (1998) uvula indlela yokuba abantu nje abaqhelekileyo bathabathe inxaxheba kuLawulo lwemiThombo yaManzi (Water Resource Management) (WRM). Le ncwadi ixoxa ngokuba ukuthabatha inxaxheba kuthetha ntoni na xa kusenziwa. Uphando lwale ncwadi lwenziwe nga-magcisa angabasebenzi eqela le-WRM phakathi kuka-2003 no-2005. Abaphathi baf-ikelela kwizigqibo zemiba emibini ebalulekileyo: 1. Ukuqonda kwethu “ukuthabatha inxaxheba” kuchaphazela ngqo ukuba siyiphatha njani imithombo yamanzi. Ngoko ke kufuneka sense nzulu ulwazi lwethu kunye namava okuthabatha inxaxheba kwi-WRM. 2. Sifuna ukhokelo olusebenzayo xa sicebela uthabatho nxaxheba lwe-WRM, kodwa olu khokelo kufuneka lube nokuguquka ukwenzela ukuba ubunjani bothabatho nxaxheba lufaneleke kwisimo okanye kumxholo ngamnye.
- Full Text:
- Date Issued: 2006
- Authors: Burt, Jane C , du Toit, Derick , Neves, David , Pollard, Sharon , Berold, Robert , Stanford, Mindy
- Date: 2006
- Subjects: To be catalogued
- Language: English
- Type: text , report
- Identifier: http://hdl.handle.net/10962/437670 , vital:73401 , ISBN 1-77005-505-3 , https://wrcwebsite.azurewebsites.net/wp-content/uploads/mdocs/TT292-06.pdf
- Description: UmThetho weSizwe waManzi (National Water Act) (1998) uvula indlela yokuba abantu nje abaqhelekileyo bathabathe inxaxheba kuLawulo lwemiThombo yaManzi (Water Resource Management) (WRM). Le ncwadi ixoxa ngokuba ukuthabatha inxaxheba kuthetha ntoni na xa kusenziwa. Uphando lwale ncwadi lwenziwe nga-magcisa angabasebenzi eqela le-WRM phakathi kuka-2003 no-2005. Abaphathi baf-ikelela kwizigqibo zemiba emibini ebalulekileyo: 1. Ukuqonda kwethu “ukuthabatha inxaxheba” kuchaphazela ngqo ukuba siyiphatha njani imithombo yamanzi. Ngoko ke kufuneka sense nzulu ulwazi lwethu kunye namava okuthabatha inxaxheba kwi-WRM. 2. Sifuna ukhokelo olusebenzayo xa sicebela uthabatho nxaxheba lwe-WRM, kodwa olu khokelo kufuneka lube nokuguquka ukwenzela ukuba ubunjani bothabatho nxaxheba lufaneleke kwisimo okanye kumxholo ngamnye.
- Full Text:
- Date Issued: 2006
Learning about participation in integrated water resources management: A South African review
- Burt, Jane C, du Toit, Derick, Neves, David, Pollard, Sharon
- Authors: Burt, Jane C , du Toit, Derick , Neves, David , Pollard, Sharon
- Date: 2006
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/433025 , vital:72924 , xlink:href="https://wrcwebsite.azurewebsites.net/wp-content/uploads/mdocs/TT293-06.pdf"
- Description: The National Water Act (1998) opens the way for ordinary people to take part in water resource management (WRM). This is a significant move towards a more social orientation and away from an approach that focused almost exclusively on the technical aspects of WRM. This set of two books asks what a social orientation means in practice. Since the National Water Act became law in 1998, how have WRM practitioners involved people in the process of managing water? What have we learnt so far? And how can we use these lessons to move forward? The content of the books is based on research that looked in some depth at national and local participatory practice in South Africa, and also broadly at international trends. The research was conducted by three WRM practitioners and two researchers in the field of participatory approaches.
- Full Text:
- Date Issued: 2006
- Authors: Burt, Jane C , du Toit, Derick , Neves, David , Pollard, Sharon
- Date: 2006
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/433025 , vital:72924 , xlink:href="https://wrcwebsite.azurewebsites.net/wp-content/uploads/mdocs/TT293-06.pdf"
- Description: The National Water Act (1998) opens the way for ordinary people to take part in water resource management (WRM). This is a significant move towards a more social orientation and away from an approach that focused almost exclusively on the technical aspects of WRM. This set of two books asks what a social orientation means in practice. Since the National Water Act became law in 1998, how have WRM practitioners involved people in the process of managing water? What have we learnt so far? And how can we use these lessons to move forward? The content of the books is based on research that looked in some depth at national and local participatory practice in South Africa, and also broadly at international trends. The research was conducted by three WRM practitioners and two researchers in the field of participatory approaches.
- Full Text:
- Date Issued: 2006
Orthopaedic grade ultra–high molecular weight polyethylene: some features of the main thermoluminescence glow curve
- Authors: Chithambo, Makaiko L
- Date: 2006
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/125499 , vital:35789 , https://doi.10.1093/rpd/nci661
- Description: Thermoluminescence (TL) characteristics of orthopaedic–grade ultra–high molecular weight polyethylene have been investigated between 20 and 200_C. The TL at 1_C s_1 consists of two glow curves, a weaker intensity peak at 115_C and the main peak at 70_C, studied in this work. TL intensity increases with beta irradiation but with a dose–response influenced by heating rate. On the other hand, the peak maximum is affected by both irradiation and repeated use of a sample. The glow curve shifts to higher temperatures with increase in heating rate but only slightly so with change in beta irradiation dose, properties suggestive of first-order kinetics. Kinetic analysis for activation energy and order of kinetics, based on the discrete trap model, produce somewhat conflicting results. Whereas qualitative analysis of peak symmetry show that first-order kinetics apply, geometrical analysis of the peak shape suggests that the order of kinetics might be other than first-order. Values of activation energy evaluated using the initial rise method were found to be dose dependent and for a given beta dose are in agreement with calculations from peak shape and initial rise methods but less so with results from variable heating rate method.
- Full Text:
- Date Issued: 2006
- Authors: Chithambo, Makaiko L
- Date: 2006
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/125499 , vital:35789 , https://doi.10.1093/rpd/nci661
- Description: Thermoluminescence (TL) characteristics of orthopaedic–grade ultra–high molecular weight polyethylene have been investigated between 20 and 200_C. The TL at 1_C s_1 consists of two glow curves, a weaker intensity peak at 115_C and the main peak at 70_C, studied in this work. TL intensity increases with beta irradiation but with a dose–response influenced by heating rate. On the other hand, the peak maximum is affected by both irradiation and repeated use of a sample. The glow curve shifts to higher temperatures with increase in heating rate but only slightly so with change in beta irradiation dose, properties suggestive of first-order kinetics. Kinetic analysis for activation energy and order of kinetics, based on the discrete trap model, produce somewhat conflicting results. Whereas qualitative analysis of peak symmetry show that first-order kinetics apply, geometrical analysis of the peak shape suggests that the order of kinetics might be other than first-order. Values of activation energy evaluated using the initial rise method were found to be dose dependent and for a given beta dose are in agreement with calculations from peak shape and initial rise methods but less so with results from variable heating rate method.
- Full Text:
- Date Issued: 2006
Integrating Secure RTP into the Open Source VoIP PBX Asterisk
- Clayton, Bradley, Irwin, Barry V W, Terzoli, Alfredo
- Authors: Clayton, Bradley , Irwin, Barry V W , Terzoli, Alfredo
- Date: 2006
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/428735 , vital:72532 , https://d1wqtxts1xzle7.cloudfront.net/84872934/66_Paper-libre.pdf?1650920302=response-content-disposi-tion=inline%3B+filename%3DIntegrating_Secure_RTP_into_the_Open_Sou.pdfExpires=1714744382Signature=PijjCGW0qcvkqRe-2R55HocKLvz9Ljw8jmhQvRQEi9YqJl7eWSiYnvs9CogY4u4bmDTYTLpvkA-nlfbiszg-s7Cq2nbLn3PUdfJ5cA11ujboi~i7oSoem7smuN1YCVZlg7FnZRd6mOXdTry9UAh8TlWyndF6pY1RXtc7bgb5cWeK4ggJ7~bM0HUXEbUKKa-abCZnGNrAZ59JIdL6CNx1Sht3o5mZTcyRL3PNVSOz17lldXi4FsAOEUwsVV-uv04hzp6pe6Qv5WbAP6tqk7deyoLUwk58A9F-PaJlOLy2gDAVLnbKT8RrxYg8tqv8SuBhPWb32CefBxv486N3F6izZw__Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA
- Description: Implementations of Voice over Internet Protocol (VoIP) have focused, up to now, mainly on the need to transport data in real-time, often at the expense of security. The neglect of secure VoIP is often intentional, as developers are striving to minimise overheads and delays. The Secure Real-Time Protocol (SRTP) has the potential to secure real-time streams without exacting too high a performance price. SRTP is the addition of security to the audio/video profile used in the Real-Time Transport Protocol (RTP). SRTP adds confidentiality, integrity and op-tionaly authenticity to RTP media streams. This paper focuses on the integration of SRTP into Asterisk, an open-source VoIP PBX. SRTP support has recently been added to Asterisk by Mikael Magnusson. This paper analyses Magnusson’s implementation, contrasting it to a proof-of-concept implementation developed independently at Rhodes University. The interoperability of SRTP implementations cannot be taken for granted, given the relatively recent standardization of the pro-tocol, and so Magnusson’s implementation is tested against another SRTP implementation. Finally, the paper highlights a major shortcoming in Magnusson’s implementation, namely that the exchange of encryp-tion keys is done in the clear. It concludes by proposing possible solu-tions, such as TLS, IPSec and MIkey.
- Full Text:
- Date Issued: 2006
- Authors: Clayton, Bradley , Irwin, Barry V W , Terzoli, Alfredo
- Date: 2006
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/428735 , vital:72532 , https://d1wqtxts1xzle7.cloudfront.net/84872934/66_Paper-libre.pdf?1650920302=response-content-disposi-tion=inline%3B+filename%3DIntegrating_Secure_RTP_into_the_Open_Sou.pdfExpires=1714744382Signature=PijjCGW0qcvkqRe-2R55HocKLvz9Ljw8jmhQvRQEi9YqJl7eWSiYnvs9CogY4u4bmDTYTLpvkA-nlfbiszg-s7Cq2nbLn3PUdfJ5cA11ujboi~i7oSoem7smuN1YCVZlg7FnZRd6mOXdTry9UAh8TlWyndF6pY1RXtc7bgb5cWeK4ggJ7~bM0HUXEbUKKa-abCZnGNrAZ59JIdL6CNx1Sht3o5mZTcyRL3PNVSOz17lldXi4FsAOEUwsVV-uv04hzp6pe6Qv5WbAP6tqk7deyoLUwk58A9F-PaJlOLy2gDAVLnbKT8RrxYg8tqv8SuBhPWb32CefBxv486N3F6izZw__Key-Pair-Id=APKAJLOHF5GGSLRBV4ZA
- Description: Implementations of Voice over Internet Protocol (VoIP) have focused, up to now, mainly on the need to transport data in real-time, often at the expense of security. The neglect of secure VoIP is often intentional, as developers are striving to minimise overheads and delays. The Secure Real-Time Protocol (SRTP) has the potential to secure real-time streams without exacting too high a performance price. SRTP is the addition of security to the audio/video profile used in the Real-Time Transport Protocol (RTP). SRTP adds confidentiality, integrity and op-tionaly authenticity to RTP media streams. This paper focuses on the integration of SRTP into Asterisk, an open-source VoIP PBX. SRTP support has recently been added to Asterisk by Mikael Magnusson. This paper analyses Magnusson’s implementation, contrasting it to a proof-of-concept implementation developed independently at Rhodes University. The interoperability of SRTP implementations cannot be taken for granted, given the relatively recent standardization of the pro-tocol, and so Magnusson’s implementation is tested against another SRTP implementation. Finally, the paper highlights a major shortcoming in Magnusson’s implementation, namely that the exchange of encryp-tion keys is done in the clear. It concludes by proposing possible solu-tions, such as TLS, IPSec and MIkey.
- Full Text:
- Date Issued: 2006
DRAPA-a flexible framework for evaluating the quality of VoIP components
- Clayton, Bradley, Terzoli, Alfredo, Irwin, Barry V W
- Authors: Clayton, Bradley , Terzoli, Alfredo , Irwin, Barry V W
- Date: 2006
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/428213 , vital:72494 , https://d1wqtxts1xzle7.cloudfront.net/3456214/No_268_-_Clayton-libre.pdf?1390832682=andresponse-content-disposi-tion=inline%3B+filename%3DDRAPA_a_flexible_framework_for_evaluatin.pdfandExpires=1714742712andSignature=FTQ3UMH7w9KMXeuld-NbnboBP9kqza7jDnVI2AJMFrhV6fkW56bPgPZKVAY-bKJFqJP-jq4h4JwRhWVuCA-oIIA4ckbhKHA4OoL4X5DYtlujkhkombcp-B5fVR02AioXBazDtfnTGvZLE21wluH0BnkBL9OAQSen7YJDzDsYtNH2pFIn06Nmg9-kDaJoRmW9KWlQs8BwyaXml4-pG~FrpiGCRclANXBSpmsxYSdJyZAnHq2ZZNqx9pEHigaYHUUgllDq64dp8C8R84xAbbbRcvt-XNhuQ~fU2AkJILms4FUkJSjGI0E-TOKhh7vQiVIh5KzZX8MOiS~rEuBH6ekx8g__andKey-Pair-Id=APKAJLOHF5GGSLRBV4ZA
- Description: When adding to or altering a VoIP system, the overall performance and quality of the system is at risk. For example, adding confidentiality, in-tegrity and authentication (CIA) would incur an overhead for each addi-tional security method. A method of measuring the performance of a VoIP system after a change or addition is needed. This paper describes a framework and testbed (DRAPA) which provides a flexible base from which VoIP performance analysis systems can be built. DRAPA gener-ates and collects data from any part of a VoIP system within a real do-main. This paper also discusses the flexibility of DRAPA. While security is our primary focus, DRAPA allows the user to configure the testbed and change the type and nature of data to be collected.
- Full Text:
- Date Issued: 2006
- Authors: Clayton, Bradley , Terzoli, Alfredo , Irwin, Barry V W
- Date: 2006
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/428213 , vital:72494 , https://d1wqtxts1xzle7.cloudfront.net/3456214/No_268_-_Clayton-libre.pdf?1390832682=andresponse-content-disposi-tion=inline%3B+filename%3DDRAPA_a_flexible_framework_for_evaluatin.pdfandExpires=1714742712andSignature=FTQ3UMH7w9KMXeuld-NbnboBP9kqza7jDnVI2AJMFrhV6fkW56bPgPZKVAY-bKJFqJP-jq4h4JwRhWVuCA-oIIA4ckbhKHA4OoL4X5DYtlujkhkombcp-B5fVR02AioXBazDtfnTGvZLE21wluH0BnkBL9OAQSen7YJDzDsYtNH2pFIn06Nmg9-kDaJoRmW9KWlQs8BwyaXml4-pG~FrpiGCRclANXBSpmsxYSdJyZAnHq2ZZNqx9pEHigaYHUUgllDq64dp8C8R84xAbbbRcvt-XNhuQ~fU2AkJILms4FUkJSjGI0E-TOKhh7vQiVIh5KzZX8MOiS~rEuBH6ekx8g__andKey-Pair-Id=APKAJLOHF5GGSLRBV4ZA
- Description: When adding to or altering a VoIP system, the overall performance and quality of the system is at risk. For example, adding confidentiality, in-tegrity and authentication (CIA) would incur an overhead for each addi-tional security method. A method of measuring the performance of a VoIP system after a change or addition is needed. This paper describes a framework and testbed (DRAPA) which provides a flexible base from which VoIP performance analysis systems can be built. DRAPA gener-ates and collects data from any part of a VoIP system within a real do-main. This paper also discusses the flexibility of DRAPA. While security is our primary focus, DRAPA allows the user to configure the testbed and change the type and nature of data to be collected.
- Full Text:
- Date Issued: 2006
Cultural significance of biodiversity: the role of medicinal plants in urban African cultural practices in the Eastern Cape, South Africa
- Cocks, Michelle L, Dold, Anthony P
- Authors: Cocks, Michelle L , Dold, Anthony P
- Date: 2006
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/141338 , vital:37963 , DOI: 10.2993/0278-0771(2006)26[60:CSOBTR]2.0.CO;2
- Description: Since the International Convention on Biodiversity in 1992 conservation biologists, ecologists and conservationists have devoted considerable attention to the conservation of biodiversity. With this has come the realization that solutions to biological problems often lie in the mechanisms of social, cultural, and economic systems. This shift has emphasized the relationship between biodiversity and human diversity, or what the Declaration of Belem (1988) calls an “inextricable link” between biological and cultural diversity. The term biocultural diversity was introduced by Posey to describe the concept denoting this link. To date this concept has been used only in reference to “indigenous people” who, as part of their traditional lifestyles, use biodiversity to sustain their cultural identity. Our research, however, demonstrates that Xhosa people (amaXhosa) living in an urban context in the Eastern Cape Province of South Africa continue to use wild plants for cultural purposes and often access these through commercial trade. We suggest that recognition of the cultural and spiritual values associated with wild plants would greatly enhance biodiversity conservation efforts. Recognition of the significant role that wild plants play in fulfilling cultural needs for urban Xhosa people would go a long way towards achieving this.
- Full Text:
- Date Issued: 2006
- Authors: Cocks, Michelle L , Dold, Anthony P
- Date: 2006
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/141338 , vital:37963 , DOI: 10.2993/0278-0771(2006)26[60:CSOBTR]2.0.CO;2
- Description: Since the International Convention on Biodiversity in 1992 conservation biologists, ecologists and conservationists have devoted considerable attention to the conservation of biodiversity. With this has come the realization that solutions to biological problems often lie in the mechanisms of social, cultural, and economic systems. This shift has emphasized the relationship between biodiversity and human diversity, or what the Declaration of Belem (1988) calls an “inextricable link” between biological and cultural diversity. The term biocultural diversity was introduced by Posey to describe the concept denoting this link. To date this concept has been used only in reference to “indigenous people” who, as part of their traditional lifestyles, use biodiversity to sustain their cultural identity. Our research, however, demonstrates that Xhosa people (amaXhosa) living in an urban context in the Eastern Cape Province of South Africa continue to use wild plants for cultural purposes and often access these through commercial trade. We suggest that recognition of the cultural and spiritual values associated with wild plants would greatly enhance biodiversity conservation efforts. Recognition of the significant role that wild plants play in fulfilling cultural needs for urban Xhosa people would go a long way towards achieving this.
- Full Text:
- Date Issued: 2006