I remember having mac and cheese at my gran’s house:
- Authors: Rennie, Gillian
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/159471 , vital:40300 , https://hdl.handle.net/10520/EJC139376
- Description: In a tutorial entitled The evolution of MEdia, writing and editing lecturer Gillian Rennie introduced Rhodes University first-year journalism and media studies students to Denis Hirson's I Remember King Kong (the boxer) and asked them to write their own I Remember, focusing on their personal relationships with the media. This is the edited result of a collective exercise in recollection by 270 students.
- Full Text:
- Date Issued: 2010
- Authors: Rennie, Gillian
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/159471 , vital:40300 , https://hdl.handle.net/10520/EJC139376
- Description: In a tutorial entitled The evolution of MEdia, writing and editing lecturer Gillian Rennie introduced Rhodes University first-year journalism and media studies students to Denis Hirson's I Remember King Kong (the boxer) and asked them to write their own I Remember, focusing on their personal relationships with the media. This is the edited result of a collective exercise in recollection by 270 students.
- Full Text:
- Date Issued: 2010
Rhodes University Graduation Ceremony 1952
- Authors: Rhodes University
- Date: 1952
- Language: English
- Type: text
- Identifier: vital:8086 , http://hdl.handle.net/10962/d1004396
- Description: Rhodes University. Graduation Ceremony held in the Grahamstown City Hall. On Friday, 28th March, 1952, at 8 p.m. , Rhodes University. Graduation Ceremony held in April 1952: South African Native College, Fort Hare Graduation Ceremony, 25th April, 1952.
- Full Text:
- Date Issued: 1952
- Authors: Rhodes University
- Date: 1952
- Language: English
- Type: text
- Identifier: vital:8086 , http://hdl.handle.net/10962/d1004396
- Description: Rhodes University. Graduation Ceremony held in the Grahamstown City Hall. On Friday, 28th March, 1952, at 8 p.m. , Rhodes University. Graduation Ceremony held in April 1952: South African Native College, Fort Hare Graduation Ceremony, 25th April, 1952.
- Full Text:
- Date Issued: 1952
Rhodes University Graduation Ceremony 1965
- Authors: Rhodes University
- Date: 1965
- Language: English
- Type: text
- Identifier: vital:8099 , http://hdl.handle.net/10962/d1004428
- Description: Rhodes University Graduation Ceremony on Saturday 10 April 1965 at 10:30 a.m. in the University Great Hall.
- Full Text:
- Date Issued: 1965
- Authors: Rhodes University
- Date: 1965
- Language: English
- Type: text
- Identifier: vital:8099 , http://hdl.handle.net/10962/d1004428
- Description: Rhodes University Graduation Ceremony on Saturday 10 April 1965 at 10:30 a.m. in the University Great Hall.
- Full Text:
- Date Issued: 1965
Rhodes University Graduation Ceremony 1964
- Authors: Rhodes University
- Date: 1964
- Language: English
- Type: text
- Identifier: vital:8098 , http://hdl.handle.net/10962/d1004426
- Description: Rhodes University Graduation Ceremony on Saturday 11 April 1964 at 10:30 a.m. in the University Great Hall.
- Full Text:
- Date Issued: 1964
- Authors: Rhodes University
- Date: 1964
- Language: English
- Type: text
- Identifier: vital:8098 , http://hdl.handle.net/10962/d1004426
- Description: Rhodes University Graduation Ceremony on Saturday 11 April 1964 at 10:30 a.m. in the University Great Hall.
- Full Text:
- Date Issued: 1964
First steps in the development of a water temperature model framework for refining the ecological Reserve in South African rivers
- Rivers-Moore, N A, Hughes, Denis A, Mantel, Sukhmani K, Hill, Trevor R
- Authors: Rivers-Moore, N A , Hughes, Denis A , Mantel, Sukhmani K , Hill, Trevor R
- Date: 2008-10-05
- Language: English
- Type: text , Article
- Identifier: vital:7092 , http://hdl.handle.net/10962/d1012425
- Description: Ecological Reserve determination for rivers in South Africa presently does not include a water temperature component, in spite of its importance in determining species distribution patterns. To achieve this requires an understanding of how lotic thermographs from South African rivers differ from northern hemisphere rivers, to avoid mismanaging rivers based on incorrect regional assumptions. Hourly water temperatures from 20 sites in four river systems, representing a range of latitudes, altitudes and stream orders, were assessed using a range of metrics. These data were analysed using principal component analyses and multiple linear regressions to understand what variables a water temperature model for use in ecoregions within South Africa should include. While temperature data are generally lacking in low- and higher-order South African rivers, data suggest that South African rivers are warmer than northern hemisphere rivers. Water temperatures could be grouped into cool, warm and intermediate types. Based on temperature time series analyses, this paper argues that a suitable water-temperature model for use in ecological Reserve determinations should be dynamic, include flow and air temperature variables, and be adaptive through a heat exchange coefficient term. The inclusion of water temperature in the determination and management of river ecological Reserves would allow for more holistic application of the National Water Act's ecological management provisions. Water temperature guidelines added to the ecological Reserve could be integrated into heuristic aquatic monitoring programmes within priority areas identified in regional conservation plans.
- Full Text:
- Date Issued: 2008-10-05
- Authors: Rivers-Moore, N A , Hughes, Denis A , Mantel, Sukhmani K , Hill, Trevor R
- Date: 2008-10-05
- Language: English
- Type: text , Article
- Identifier: vital:7092 , http://hdl.handle.net/10962/d1012425
- Description: Ecological Reserve determination for rivers in South Africa presently does not include a water temperature component, in spite of its importance in determining species distribution patterns. To achieve this requires an understanding of how lotic thermographs from South African rivers differ from northern hemisphere rivers, to avoid mismanaging rivers based on incorrect regional assumptions. Hourly water temperatures from 20 sites in four river systems, representing a range of latitudes, altitudes and stream orders, were assessed using a range of metrics. These data were analysed using principal component analyses and multiple linear regressions to understand what variables a water temperature model for use in ecoregions within South Africa should include. While temperature data are generally lacking in low- and higher-order South African rivers, data suggest that South African rivers are warmer than northern hemisphere rivers. Water temperatures could be grouped into cool, warm and intermediate types. Based on temperature time series analyses, this paper argues that a suitable water-temperature model for use in ecological Reserve determinations should be dynamic, include flow and air temperature variables, and be adaptive through a heat exchange coefficient term. The inclusion of water temperature in the determination and management of river ecological Reserves would allow for more holistic application of the National Water Act's ecological management provisions. Water temperature guidelines added to the ecological Reserve could be integrated into heuristic aquatic monitoring programmes within priority areas identified in regional conservation plans.
- Full Text:
- Date Issued: 2008-10-05
A mathematics teacher's response to a dilemma: 'I'm supposed to teach them in English but they don't understand'
- Robertson, Sally-Ann, Graven, Mellony
- Authors: Robertson, Sally-Ann , Graven, Mellony
- Date: 2020
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/148889 , vital:38783 , https://doi.org/10.4102/sajce.v10i1.800
- Description: English is the dominant language in South African schools although it is the home language for less than 10% of the population. Many schools have yet to embrace the Language in Education Policy’s advocacy of additive bilingualism. This has led to a majority of the country’s children learning and being assessed through a language in which they lack proficiency. This article draws on second language teaching and learning theory to make a case for more systematic support for learners’ second language development and for legitimation of use of home language in mathematics classrooms where a different language is the official medium. The article shares empirical data from a South African Grade 4 mathematics teacher’s classroom to illuminate arguments in favour of additive bilingualism.
- Full Text:
- Date Issued: 2020
- Authors: Robertson, Sally-Ann , Graven, Mellony
- Date: 2020
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/148889 , vital:38783 , https://doi.org/10.4102/sajce.v10i1.800
- Description: English is the dominant language in South African schools although it is the home language for less than 10% of the population. Many schools have yet to embrace the Language in Education Policy’s advocacy of additive bilingualism. This has led to a majority of the country’s children learning and being assessed through a language in which they lack proficiency. This article draws on second language teaching and learning theory to make a case for more systematic support for learners’ second language development and for legitimation of use of home language in mathematics classrooms where a different language is the official medium. The article shares empirical data from a South African Grade 4 mathematics teacher’s classroom to illuminate arguments in favour of additive bilingualism.
- Full Text:
- Date Issued: 2020
Controls on channel form and channel change in the Bell River, Eastern Cape, South Africa
- Rowntree, Kate M, Dollar, Evan S J
- Authors: Rowntree, Kate M , Dollar, Evan S J
- Date: 1996
- Language: English
- Type: Article
- Identifier: vital:6723 , http://hdl.handle.net/10962/d1006801
- Description: Channel instability has occurred in the Bell River in the form of meander cutoffs, incipient meander cutoffs, and general channel instability. This paper examines the incidence of channel instability in relation to the spatial variability of factors controlling channel form. The locations of channel change were mapped from aerial photographs for a 40 year period. Channel form characteristics were measured over a 17 km stretch of channel. Data collected from this stretch included pattern, width, depth, form ratio, channel gradient, particle-size distribution of bed and bank materials and riparian vegetation. Results indicate that the two primary spatial controls on channel form and pattern are riparian vegetation and bed-material size. Evidence indicates that narrow stable stretches are associated with finer bed-material and relatively high levels of riparian vegetation. Riparian vegetation increases bank stability and reduces channel cross-section, thereby inducing stability at flows less than bankfull. However, at flows greater than bankfull, reduced channel capacity results in more frequent flooding which may ultimately lead to channel avulsion. Wider, unstable channels are associated with larger calibre bed material and relatively less riparian vegetation. Predicted threshold slopes for braiding have indicated that most reaches in the Bell river are close to or above the threshold slope for braiding. Since riparian vegetation serves to increase bank stability, steeper threshold slopes are required for braiding in channels with high vegetation density Recent incidences of channel instability have been identified as occurring in the transitional zone between the upper, coarser reach and lower, finer channel reach.
- Full Text: false
- Date Issued: 1996
- Authors: Rowntree, Kate M , Dollar, Evan S J
- Date: 1996
- Language: English
- Type: Article
- Identifier: vital:6723 , http://hdl.handle.net/10962/d1006801
- Description: Channel instability has occurred in the Bell River in the form of meander cutoffs, incipient meander cutoffs, and general channel instability. This paper examines the incidence of channel instability in relation to the spatial variability of factors controlling channel form. The locations of channel change were mapped from aerial photographs for a 40 year period. Channel form characteristics were measured over a 17 km stretch of channel. Data collected from this stretch included pattern, width, depth, form ratio, channel gradient, particle-size distribution of bed and bank materials and riparian vegetation. Results indicate that the two primary spatial controls on channel form and pattern are riparian vegetation and bed-material size. Evidence indicates that narrow stable stretches are associated with finer bed-material and relatively high levels of riparian vegetation. Riparian vegetation increases bank stability and reduces channel cross-section, thereby inducing stability at flows less than bankfull. However, at flows greater than bankfull, reduced channel capacity results in more frequent flooding which may ultimately lead to channel avulsion. Wider, unstable channels are associated with larger calibre bed material and relatively less riparian vegetation. Predicted threshold slopes for braiding have indicated that most reaches in the Bell river are close to or above the threshold slope for braiding. Since riparian vegetation serves to increase bank stability, steeper threshold slopes are required for braiding in channels with high vegetation density Recent incidences of channel instability have been identified as occurring in the transitional zone between the upper, coarser reach and lower, finer channel reach.
- Full Text: false
- Date Issued: 1996
Improving the bioremediation of phenolic wastewaters by Trametes versicolor
- Ryan, D, Leukes, W, Burton, Stephanie G
- Authors: Ryan, D , Leukes, W , Burton, Stephanie G
- Date: 2006
- Language: English
- Type: Article
- Identifier: vital:6467 , http://hdl.handle.net/10962/d1005796 , http://dx.doi.org/10.1016/j.biortech.2006.02.001
- Description: The successful bioremediation of a phenolic wastewater by Trametes versicolor was found to be dependent on a range of factors including: fungal growth, culture age and activity and enzyme (laccase) production. These aspects were enhanced by the optimisation of the growth medium used and time of addition of the pollutant to the fungal cultures. Different media containing ‘high’ (20 g/L), ‘low’ (2 g/L) and ‘sufficient’ (10 g/L) concentrations of carbon and nitrogen sources were investigated. The medium containing both glucose and peptone at 10 g/L resulted in the highest Growth Related Productivity (the product of specific yield and μ) of laccase (1.46 Units of laccase activity)/gram biomass/day and was used in all further experiments. The use of the guaiacol as an inducer further increased laccase activity 780% without inhibiting growth; similarly the phenolic effluent studied boosted activity almost 5 times. The timing of the addition of the phenolic effluent was found to have important consequences in its removal and at least 8 days of prior growth was required. Under these conditions, 0.125 g phenol/g biomass and 0.231 g o-cresol/g biomass were removed from solution per day.
- Full Text:
- Date Issued: 2006
- Authors: Ryan, D , Leukes, W , Burton, Stephanie G
- Date: 2006
- Language: English
- Type: Article
- Identifier: vital:6467 , http://hdl.handle.net/10962/d1005796 , http://dx.doi.org/10.1016/j.biortech.2006.02.001
- Description: The successful bioremediation of a phenolic wastewater by Trametes versicolor was found to be dependent on a range of factors including: fungal growth, culture age and activity and enzyme (laccase) production. These aspects were enhanced by the optimisation of the growth medium used and time of addition of the pollutant to the fungal cultures. Different media containing ‘high’ (20 g/L), ‘low’ (2 g/L) and ‘sufficient’ (10 g/L) concentrations of carbon and nitrogen sources were investigated. The medium containing both glucose and peptone at 10 g/L resulted in the highest Growth Related Productivity (the product of specific yield and μ) of laccase (1.46 Units of laccase activity)/gram biomass/day and was used in all further experiments. The use of the guaiacol as an inducer further increased laccase activity 780% without inhibiting growth; similarly the phenolic effluent studied boosted activity almost 5 times. The timing of the addition of the phenolic effluent was found to have important consequences in its removal and at least 8 days of prior growth was required. Under these conditions, 0.125 g phenol/g biomass and 0.231 g o-cresol/g biomass were removed from solution per day.
- Full Text:
- Date Issued: 2006
Shopstewards summit - Notice and Agenda
- SACCAWU
- Authors: SACCAWU
- Date: Oct 2007
- Subjects: SACCAWU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/137723 , vital:37553
- Description: Comrades National Office Bearers of SACCAWU, other leadership of the Union at various level, the Wits Regional leadership of SACCAWU, the Shoprite Checkers NSSC NOBs, Officials, esteemed guests and delegates to this Summit, a substructure to the NSSC, I bring you warm and revolutionary greetings on behalf of the Shoprite Checkers NOBs and the entire NSSC and the entire SACCAWU membership. We are indeed honoured that you have all, particularly the SACCAWU NOBs, Officials and Guests, went to great length and sacrifices to ensure that you form part of this historic Summit. It is historic in that it is the only meeting of national competence convened in the year the NSSC turns twenty. Lest we forget, the Shoprite Council was launched in 1987, and has over the years relaunched to match the developments that were taking place within the company as it was growing its brands. Without your presence, we have no doubt that our debates would be poorer, leading to decisions that might in the long run prove inappropriate. You are once more welcome and assured that you are free to participate in the deliberations over the next few days. The Council have seen various onslaughts through the years and survived the iron-fisted resolve of the brutal apartheid regime and the capitalist system in its changing forms. It is the experiences of the time that has moulded numerous Shopstewards to an extent of understanding the necessity of participating within the Union and Federation structures. It is no coincidence that today, this Council has many of its Shopstewards in the CEC of the Union. It is of course worthless to have numbers in such structures if we do not play a positive and constructive role in shaping the direction of the Union. We can only do so if we are really grounded on the traditions of the mass democratic movement and the national democratic revolution.
- Full Text:
- Date Issued: Oct 2007
- Authors: SACCAWU
- Date: Oct 2007
- Subjects: SACCAWU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/137723 , vital:37553
- Description: Comrades National Office Bearers of SACCAWU, other leadership of the Union at various level, the Wits Regional leadership of SACCAWU, the Shoprite Checkers NSSC NOBs, Officials, esteemed guests and delegates to this Summit, a substructure to the NSSC, I bring you warm and revolutionary greetings on behalf of the Shoprite Checkers NOBs and the entire NSSC and the entire SACCAWU membership. We are indeed honoured that you have all, particularly the SACCAWU NOBs, Officials and Guests, went to great length and sacrifices to ensure that you form part of this historic Summit. It is historic in that it is the only meeting of national competence convened in the year the NSSC turns twenty. Lest we forget, the Shoprite Council was launched in 1987, and has over the years relaunched to match the developments that were taking place within the company as it was growing its brands. Without your presence, we have no doubt that our debates would be poorer, leading to decisions that might in the long run prove inappropriate. You are once more welcome and assured that you are free to participate in the deliberations over the next few days. The Council have seen various onslaughts through the years and survived the iron-fisted resolve of the brutal apartheid regime and the capitalist system in its changing forms. It is the experiences of the time that has moulded numerous Shopstewards to an extent of understanding the necessity of participating within the Union and Federation structures. It is no coincidence that today, this Council has many of its Shopstewards in the CEC of the Union. It is of course worthless to have numbers in such structures if we do not play a positive and constructive role in shaping the direction of the Union. We can only do so if we are really grounded on the traditions of the mass democratic movement and the national democratic revolution.
- Full Text:
- Date Issued: Oct 2007
SPREAD-IT Sached Library Bulletin. Some tell, some hear, some judge news - some make it.
- SACHED
- Authors: SACHED
- Date: 1991
- Subjects: SACHED
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/173834 , vital:42414
- Description: The response to the first issue of SPREAD-IT was encouraging - to say the least. Not only did we find people reading it during centre staff meetings and during NCC debates, but we believe it has set a trend - the NWC is now also compliling a bulletin of news! Well, our spreading function is certainly becoming infectious - which, of course, was our intention. We even ran out of copies.
- Full Text:
- Date Issued: 1991
- Authors: SACHED
- Date: 1991
- Subjects: SACHED
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/173834 , vital:42414
- Description: The response to the first issue of SPREAD-IT was encouraging - to say the least. Not only did we find people reading it during centre staff meetings and during NCC debates, but we believe it has set a trend - the NWC is now also compliling a bulletin of news! Well, our spreading function is certainly becoming infectious - which, of course, was our intention. We even ran out of copies.
- Full Text:
- Date Issued: 1991
Campaigns Bulletin : Anti-Privatisation Campaign Special Issue
- SAMWU
- Authors: SAMWU
- Date: Mar 1998
- Subjects: SAMWU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/113407 , vital:33768
- Description: The SAMWU anti-privatisation campaign goes right to the heart of all members in their role as service providers to the community. Any privatisation of municipal services would mean that people in community not have access to basic services. It would also mean a loss of jobs through retrenchment and restructuring. This has already happened in other parts of the world. Internationally, public sector unions are fighting privatisation. For all these reasons, SAMWU calls on all members to intensify the anti-privatisation campaign! Experiences internationally have shown that privatisation results in increase in tariffs and a decline in quality services. Our communities have never received a quality service under apartheid. Now things will even be worse: under privatisation only those who can afford to pay, will get services. A major political responsibility that confronts SAMWU: we must ensure that we win the struggle against privatisation. We are confident that based on the democratic participation of ‘our gold', SAMWU workers, COSATU and the community we can be victorious.
- Full Text:
- Date Issued: Mar 1998
- Authors: SAMWU
- Date: Mar 1998
- Subjects: SAMWU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/113407 , vital:33768
- Description: The SAMWU anti-privatisation campaign goes right to the heart of all members in their role as service providers to the community. Any privatisation of municipal services would mean that people in community not have access to basic services. It would also mean a loss of jobs through retrenchment and restructuring. This has already happened in other parts of the world. Internationally, public sector unions are fighting privatisation. For all these reasons, SAMWU calls on all members to intensify the anti-privatisation campaign! Experiences internationally have shown that privatisation results in increase in tariffs and a decline in quality services. Our communities have never received a quality service under apartheid. Now things will even be worse: under privatisation only those who can afford to pay, will get services. A major political responsibility that confronts SAMWU: we must ensure that we win the struggle against privatisation. We are confident that based on the democratic participation of ‘our gold', SAMWU workers, COSATU and the community we can be victorious.
- Full Text:
- Date Issued: Mar 1998
Afromelampsalta, a new genus, a new species, and five new combinations of African cicadettine cicadas (Hemiptera: Cicadidae: Cicadettinae):
- Sanborn, Allen F, Villet, Martin H
- Authors: Sanborn, Allen F , Villet, Martin H
- Date: 2020
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/140680 , vital:37909
- Description: Afromelampsalta n. gen. is described for African species currently assigned to the genera Melampsalta Kolenati, 1857. Cicadetta Kolenati, 1857 and Pauropsalta Goding and Froggatt, 1904, and the new species Afromelampsalta luteofasciata n. gen., n. sp. is described. Afromelampsalta aethiopica (Distant, 1905) n. comb., A. cadisia (Walker, 1850) n. comb. and A. leucoptera (Germar, 1830) n. comb. are reassigned from Melampsalta to Afromelampsalta n. gen., A. limitata (Walker, 1852) n. comb. is transferred from Cicadetta Kolenati, 1857 and A. mimica (Distant ,1907) n. comb. is transferred from Pauropsalta Goding and Froggatt, 1904 to Afromelampsalta n. gen. Notes on the biology of the new species, a description of the exuvia of A. mimica n. comb., and a key to the species of African Cicadettini are provided.
- Full Text:
- Date Issued: 2020
- Authors: Sanborn, Allen F , Villet, Martin H
- Date: 2020
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/140680 , vital:37909
- Description: Afromelampsalta n. gen. is described for African species currently assigned to the genera Melampsalta Kolenati, 1857. Cicadetta Kolenati, 1857 and Pauropsalta Goding and Froggatt, 1904, and the new species Afromelampsalta luteofasciata n. gen., n. sp. is described. Afromelampsalta aethiopica (Distant, 1905) n. comb., A. cadisia (Walker, 1850) n. comb. and A. leucoptera (Germar, 1830) n. comb. are reassigned from Melampsalta to Afromelampsalta n. gen., A. limitata (Walker, 1852) n. comb. is transferred from Cicadetta Kolenati, 1857 and A. mimica (Distant ,1907) n. comb. is transferred from Pauropsalta Goding and Froggatt, 1904 to Afromelampsalta n. gen. Notes on the biology of the new species, a description of the exuvia of A. mimica n. comb., and a key to the species of African Cicadettini are provided.
- Full Text:
- Date Issued: 2020
SASBO Strikes and lockout policies
- SASBO
- Authors: SASBO
- Date: 2000
- Subjects: SASBO
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/160585 , vital:40477
- Description: This information and policy document has been produced in response to a resolution adopted by the SASBO National Congress in October 1998. The information provided is a summary of the rights of employees with regard to strike and other industrial actions, and of their employers' recourse to lockout. SASBO members wishing to acquire a more detailed knowledge of strikes and lock-outs should refer to Chapter IV of the Labour Relations Act of 1995 for the full text of the relevant legislation.
- Full Text:
- Date Issued: 2000
- Authors: SASBO
- Date: 2000
- Subjects: SASBO
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/160585 , vital:40477
- Description: This information and policy document has been produced in response to a resolution adopted by the SASBO National Congress in October 1998. The information provided is a summary of the rights of employees with regard to strike and other industrial actions, and of their employers' recourse to lockout. SASBO members wishing to acquire a more detailed knowledge of strikes and lock-outs should refer to Chapter IV of the Labour Relations Act of 1995 for the full text of the relevant legislation.
- Full Text:
- Date Issued: 2000
The roles of phonological awareness, rapid automatised naming and morphological awareness in isiXhosa:
- Schaefer, Maxine, Probert, Tracy N, Rees, Siȃn
- Authors: Schaefer, Maxine , Probert, Tracy N , Rees, Siȃn
- Date: 2020
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/159950 , vital:40359 , https://doi.org/10.5785/36-1-878
- Description: The current paper examines the unique contributions of phonological awareness (PA), rapid automatised naming (RAN) and morphological awareness (MA) to oral reading fluency (ORF) in isiXhosa. No published study has yet explored the individual contributions of these three cognitive-linguistic skills to reading in isiXhosa. Sixty-six grade 3 home language isiXhosa learners were assessed on these cognitive-linguistic skills. Results from a linear regression analysis showed that only RAN and MA, but not PA, were significant concurrent predictors of ORF. These results suggest that the role of PA in reading in grade 3 learners in isiXhosa may have been overestimated because other important predictors of reading have not been controlled. Our data also suggest that grade 3 isiXhosa learners may make use of the morpheme as a grain size in reading. Our study highlights the need for longitudinal research which explores the roles of PA, MA and RAN in reading development in order to inform reading pedagogy in isiXhosa and other Southern Bantu languages.
- Full Text:
- Date Issued: 2020
- Authors: Schaefer, Maxine , Probert, Tracy N , Rees, Siȃn
- Date: 2020
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/159950 , vital:40359 , https://doi.org/10.5785/36-1-878
- Description: The current paper examines the unique contributions of phonological awareness (PA), rapid automatised naming (RAN) and morphological awareness (MA) to oral reading fluency (ORF) in isiXhosa. No published study has yet explored the individual contributions of these three cognitive-linguistic skills to reading in isiXhosa. Sixty-six grade 3 home language isiXhosa learners were assessed on these cognitive-linguistic skills. Results from a linear regression analysis showed that only RAN and MA, but not PA, were significant concurrent predictors of ORF. These results suggest that the role of PA in reading in grade 3 learners in isiXhosa may have been overestimated because other important predictors of reading have not been controlled. Our data also suggest that grade 3 isiXhosa learners may make use of the morpheme as a grain size in reading. Our study highlights the need for longitudinal research which explores the roles of PA, MA and RAN in reading development in order to inform reading pedagogy in isiXhosa and other Southern Bantu languages.
- Full Text:
- Date Issued: 2020
Cardiac responses under diverse combinations of marching speed and backpack load
- Scott, Patricia A, Christie, Candice J
- Authors: Scott, Patricia A , Christie, Candice J
- Date: 2000
- Language: English
- Type: Article
- Identifier: vital:6755 , http://hdl.handle.net/10962/d1009457
- Description: Thirty seasoned foot-soldiers were exposed to a total of 16 combinations of marching speed and backpack load, each soldier experiencing 8 of the combinations between 3.5km.h-1 with a 20kg load and 6.5km.h-1 with a 65kg load. Detailed physiological analyses were conducted, of which the heart rate responses are reported here. Steady state was achieved with all combinations under 5.5km.h-1 speed and 35kg load. Excessively elevated heart rates were elicited by all loads over 20kg at 6.5km.h-1 marching speed; by loads over 35kg at 5.5km.h-1 marching speed and by the 65kg load even at 4.5km.h-1 marching speed.
- Full Text:
- Date Issued: 2000
- Authors: Scott, Patricia A , Christie, Candice J
- Date: 2000
- Language: English
- Type: Article
- Identifier: vital:6755 , http://hdl.handle.net/10962/d1009457
- Description: Thirty seasoned foot-soldiers were exposed to a total of 16 combinations of marching speed and backpack load, each soldier experiencing 8 of the combinations between 3.5km.h-1 with a 20kg load and 6.5km.h-1 with a 65kg load. Detailed physiological analyses were conducted, of which the heart rate responses are reported here. Steady state was achieved with all combinations under 5.5km.h-1 speed and 35kg load. Excessively elevated heart rates were elicited by all loads over 20kg at 6.5km.h-1 marching speed; by loads over 35kg at 5.5km.h-1 marching speed and by the 65kg load even at 4.5km.h-1 marching speed.
- Full Text:
- Date Issued: 2000
Growth of Aloe ferox Mill. at selected sites in the Makana region of the Eastern Cape
- Shackleton, Charlie M, Gambiza, James
- Authors: Shackleton, Charlie M , Gambiza, James
- Date: 2007
- Language: English
- Type: Article
- Identifier: vital:6654 , http://hdl.handle.net/10962/d1007068
- Description: There is widespread harvesting of the leaves of Aloe ferox to supply bitters and gel for cosmetic and health products. Government and private agencies are interested in expanding the industry as a means of providing income for poor rural communities. With the growing interest in the commercial use of A. ferox it is important that harvesting programmes are based on an adequate understanding of the ecology and productivity of the species, which will underpin estimates of possible sustainable yields. In this paper we report mean annual growth rates of 283 A. ferox plants (at six sites) during the 2005/2006 season. Growth was variable across sites and plant height. In terms of sites, the mean height growth ranged between 1.7 cm per plant per year at site 4 and 4.6 cm at site 2. The mean height increment across all sites and plants was 2.8 ± 0.2 cm. Plant height had a strong effect on annual increment with small plants (< 6 cm) more than doubling their height in the 12 month period, whereas plants taller than 2 m grew by approximately 1% over the year. Across the five unburnt sites, the mean standing stock of leaves grew by two per plant. The proportion of plants flowering increased progressively with plant height. Most (90%) of the plants that flowered in 2005 did so again in 2006.
- Full Text:
- Date Issued: 2007
- Authors: Shackleton, Charlie M , Gambiza, James
- Date: 2007
- Language: English
- Type: Article
- Identifier: vital:6654 , http://hdl.handle.net/10962/d1007068
- Description: There is widespread harvesting of the leaves of Aloe ferox to supply bitters and gel for cosmetic and health products. Government and private agencies are interested in expanding the industry as a means of providing income for poor rural communities. With the growing interest in the commercial use of A. ferox it is important that harvesting programmes are based on an adequate understanding of the ecology and productivity of the species, which will underpin estimates of possible sustainable yields. In this paper we report mean annual growth rates of 283 A. ferox plants (at six sites) during the 2005/2006 season. Growth was variable across sites and plant height. In terms of sites, the mean height growth ranged between 1.7 cm per plant per year at site 4 and 4.6 cm at site 2. The mean height increment across all sites and plants was 2.8 ± 0.2 cm. Plant height had a strong effect on annual increment with small plants (< 6 cm) more than doubling their height in the 12 month period, whereas plants taller than 2 m grew by approximately 1% over the year. Across the five unburnt sites, the mean standing stock of leaves grew by two per plant. The proportion of plants flowering increased progressively with plant height. Most (90%) of the plants that flowered in 2005 did so again in 2006.
- Full Text:
- Date Issued: 2007
Deagrarianisation and forest revegetation in a biodiversity hotspot on the Wild Coast, South Africa
- Shackleton, Ross T, Shackleton, Charlie M, Shackleton, Sheona E, Gambiza, James
- Authors: Shackleton, Ross T , Shackleton, Charlie M , Shackleton, Sheona E , Gambiza, James
- Date: 2013
- Language: English
- Type: article , text
- Identifier: http://hdl.handle.net/10962/60984 , vital:27905 , doi:10.1371/journal.pone.0076939
- Description: Deagraianisation is a worldwide phenomenon with widespread social, ecological and economic effects yet with little consensus on the local or higher level causes. There have been contested views on the causes and consequences of deagrarianisation on South Africa’s Wild Coast, which is an international biodiversity hotspot. Using GIS, household interviews and ecological sampling, we compared the perspectives of current and former cultivators as to why some have abandoned farming, whilst also tracking the uses and woody plant cover and composition of fields abandoned at different periods. The GIS analysis showed that field abandonment had been ongoing over several decades, with a decline from 12.5 % field cover in 1961 to 2.7 % in 2009. The area of forests and woodlands almost doubled in the corresponding period. There was a distinct peak in field abandonment during the time of political transition at the national level in the early 1990s. This political change led to a decrease in government support for livestock farming, which in turn resulted in reduced animal draught power at the household and community level, and hence reduced cropping. The study showed it is largely the wealthier households that have remained in arable agriculture and that the poorer households have abandoned farming. The abandoned fields show a distinct trend of increasing woody biomass and species richness with length of time since abandonment, with approximately three woody plant species added per decade. Most local respondents dislike the increases in forest and woodland extent and density because of anxiety about wild animals causing harm to crops and even humans, and the loss of an agricultural identity to livelihoods and the landscape.
- Full Text:
- Date Issued: 2013
- Authors: Shackleton, Ross T , Shackleton, Charlie M , Shackleton, Sheona E , Gambiza, James
- Date: 2013
- Language: English
- Type: article , text
- Identifier: http://hdl.handle.net/10962/60984 , vital:27905 , doi:10.1371/journal.pone.0076939
- Description: Deagraianisation is a worldwide phenomenon with widespread social, ecological and economic effects yet with little consensus on the local or higher level causes. There have been contested views on the causes and consequences of deagrarianisation on South Africa’s Wild Coast, which is an international biodiversity hotspot. Using GIS, household interviews and ecological sampling, we compared the perspectives of current and former cultivators as to why some have abandoned farming, whilst also tracking the uses and woody plant cover and composition of fields abandoned at different periods. The GIS analysis showed that field abandonment had been ongoing over several decades, with a decline from 12.5 % field cover in 1961 to 2.7 % in 2009. The area of forests and woodlands almost doubled in the corresponding period. There was a distinct peak in field abandonment during the time of political transition at the national level in the early 1990s. This political change led to a decrease in government support for livestock farming, which in turn resulted in reduced animal draught power at the household and community level, and hence reduced cropping. The study showed it is largely the wealthier households that have remained in arable agriculture and that the poorer households have abandoned farming. The abandoned fields show a distinct trend of increasing woody biomass and species richness with length of time since abandonment, with approximately three woody plant species added per decade. Most local respondents dislike the increases in forest and woodland extent and density because of anxiety about wild animals causing harm to crops and even humans, and the loss of an agricultural identity to livelihoods and the landscape.
- Full Text:
- Date Issued: 2013
Key drivers of change and their implications for Construction Management in the next decade: an eclectic approach
- Authors: Shakantu, Winston
- Subjects: Change , Construction industry , f-sa
- Language: English
- Type: text , Lectures
- Identifier: http://hdl.handle.net/10948/20912 , vital:29416
- Description: I chose to look at ‘key drivers of change’ as change is the only constant in our lives; its winds keep blowing in perpetuity. Drivers of change are factors that induce or compel organisations to modify their actions in response to change. The drivers of change originate mainly in the macro-environment and in most cases in the micro-environment. As for why ‘implications for construction management research’ it is because of the four areas of responsibility for an academic, that is, Teaching, Research, Engagement and Administration, research informs all the four. Therefore, it seems to be the logical departure point for a professorial exposition.
- Full Text:
- Authors: Shakantu, Winston
- Subjects: Change , Construction industry , f-sa
- Language: English
- Type: text , Lectures
- Identifier: http://hdl.handle.net/10948/20912 , vital:29416
- Description: I chose to look at ‘key drivers of change’ as change is the only constant in our lives; its winds keep blowing in perpetuity. Drivers of change are factors that induce or compel organisations to modify their actions in response to change. The drivers of change originate mainly in the macro-environment and in most cases in the micro-environment. As for why ‘implications for construction management research’ it is because of the four areas of responsibility for an academic, that is, Teaching, Research, Engagement and Administration, research informs all the four. Therefore, it seems to be the logical departure point for a professorial exposition.
- Full Text:
Population structure and growth of polydorid polychaetes that infest cultured abalone Haliotis midae
- Simon, Carol A, Booth, Anthony J
- Authors: Simon, Carol A , Booth, Anthony J
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/125731 , vital:35812 , https://doi.10.2989/AJMS.2007.29.3.16.346
- Description: Polydorid polychaetes can infest cultured abalone thereby reducing productivity. In order to effectively control these pests, their reproductive biology must be understood. The population dynamics and reproduction of polydorids infesting abalone Haliotis midae from two farms in South Africa is described using a length-based, age-structured model. Shells were infested mainly by introduced Boccardia proboscidea. Polydora hoplura and Dipolydora capensis were also present but in numbers too few to identify factors influencing infestation. At both farms, B. proboscidea lived for a minimum of 12 months. Growth rate, size at maturity, maximum size, infestation intensity, recruitment, percentage of the population brooding and mortality appear to be affected by abalone feeding regime and water temperature, and these factors need to be considered in controlling infestation. Brooders and recruits were present throughout the year, but increased significantly during mid- to late winter/early spring when water temperature and day length increased. Treatment measures should therefore be implemented throughout the year but with increased effort when water temperature increases.
- Full Text:
- Date Issued: 2010
Population structure and growth of polydorid polychaetes that infest cultured abalone Haliotis midae
- Authors: Simon, Carol A , Booth, Anthony J
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/125731 , vital:35812 , https://doi.10.2989/AJMS.2007.29.3.16.346
- Description: Polydorid polychaetes can infest cultured abalone thereby reducing productivity. In order to effectively control these pests, their reproductive biology must be understood. The population dynamics and reproduction of polydorids infesting abalone Haliotis midae from two farms in South Africa is described using a length-based, age-structured model. Shells were infested mainly by introduced Boccardia proboscidea. Polydora hoplura and Dipolydora capensis were also present but in numbers too few to identify factors influencing infestation. At both farms, B. proboscidea lived for a minimum of 12 months. Growth rate, size at maturity, maximum size, infestation intensity, recruitment, percentage of the population brooding and mortality appear to be affected by abalone feeding regime and water temperature, and these factors need to be considered in controlling infestation. Brooders and recruits were present throughout the year, but increased significantly during mid- to late winter/early spring when water temperature and day length increased. Treatment measures should therefore be implemented throughout the year but with increased effort when water temperature increases.
- Full Text:
- Date Issued: 2010
In vitro analysis of putative cancer stem cell populations and chemosensitivity in the SW480 and SW620 colon cancer metastasis model:
- Slater, Cindy, de la Mare, Jo-Anne, Edkins, Adrienne L
- Authors: Slater, Cindy , de la Mare, Jo-Anne , Edkins, Adrienne L
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/164401 , vital:41115 , DOI: 10.3892/ol.2018.8431
- Description: The cancer stem cell (CSC) theory implicates a small subpopulation of cells with stem like properties, which is responsible for tumour initiation, development and metastasis. The unique biological and functional characteristics of CSCs, widely associated with treatment resistance, indicate an association between metastasis and stemness. It was hypothesised that metastatic cell lines may be enriched in CSCs and that this would correlate with a more resistant tumour. In the present study, the SW480 and SW620 paired cell lines derived from a colon adenocarcinoma and its lymph node metastasis, respectively were compared as an in vitro model of cancer progression. Their chemosensitivity and CSC properties were investigated. A range of in vitro assays were performed, including the side population assay, ALDEFLUOR assay, tumoursphere assay and assessment of CSC associated surface phenotypes.
- Full Text:
- Date Issued: 2018
- Authors: Slater, Cindy , de la Mare, Jo-Anne , Edkins, Adrienne L
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/164401 , vital:41115 , DOI: 10.3892/ol.2018.8431
- Description: The cancer stem cell (CSC) theory implicates a small subpopulation of cells with stem like properties, which is responsible for tumour initiation, development and metastasis. The unique biological and functional characteristics of CSCs, widely associated with treatment resistance, indicate an association between metastasis and stemness. It was hypothesised that metastatic cell lines may be enriched in CSCs and that this would correlate with a more resistant tumour. In the present study, the SW480 and SW620 paired cell lines derived from a colon adenocarcinoma and its lymph node metastasis, respectively were compared as an in vitro model of cancer progression. Their chemosensitivity and CSC properties were investigated. A range of in vitro assays were performed, including the side population assay, ALDEFLUOR assay, tumoursphere assay and assessment of CSC associated surface phenotypes.
- Full Text:
- Date Issued: 2018