A Mbo Da Mondjo
- Priscilia Ngando (lead vocal), Mevio-Mayo, Dany Mouanga, Mouasso (rhythm guitars), Aubin Sandjo, Scorpionkabambay, Mouche Bass (bass guitar), Dany Mouanga, Eric Sefu (solo guitar), Aubin Sandjo, Paul Balong (keyboard), Abel Massock, Fabo Claude, Nono (chorus), Moussa Haissam,Penda Dalle (composers), Aubin Sandjo (drum, percussion, keyboard), Alhadji Mallam Issa (talking drum), Moussa Haissam
- Authors: Priscilia Ngando (lead vocal) , Mevio-Mayo, Dany Mouanga, Mouasso (rhythm guitars) , Aubin Sandjo, Scorpionkabambay, Mouche Bass (bass guitar) , Dany Mouanga, Eric Sefu (solo guitar) , Aubin Sandjo, Paul Balong (keyboard) , Abel Massock, Fabo Claude, Nono (chorus) , Moussa Haissam,Penda Dalle (composers) , Aubin Sandjo (drum, percussion, keyboard) , Alhadji Mallam Issa (talking drum) , Moussa Haissam
- Date: 2000
- Subjects: Popular music , Popular music--Africa, West , Africa Cameroon Yaounde f-cm
- Language: French
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/130882 , vital:36494 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDC47-08
- Description: Popular songs from Cameroon, featuring female vocal accompanied by keyboard, chorus, guitar, percussion and talking drum, playing West and Central African rhythms
- Full Text: false
- Date Issued: 2000
- Authors: Priscilia Ngando (lead vocal) , Mevio-Mayo, Dany Mouanga, Mouasso (rhythm guitars) , Aubin Sandjo, Scorpionkabambay, Mouche Bass (bass guitar) , Dany Mouanga, Eric Sefu (solo guitar) , Aubin Sandjo, Paul Balong (keyboard) , Abel Massock, Fabo Claude, Nono (chorus) , Moussa Haissam,Penda Dalle (composers) , Aubin Sandjo (drum, percussion, keyboard) , Alhadji Mallam Issa (talking drum) , Moussa Haissam
- Date: 2000
- Subjects: Popular music , Popular music--Africa, West , Africa Cameroon Yaounde f-cm
- Language: French
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/130882 , vital:36494 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDC47-08
- Description: Popular songs from Cameroon, featuring female vocal accompanied by keyboard, chorus, guitar, percussion and talking drum, playing West and Central African rhythms
- Full Text: false
- Date Issued: 2000
A narrative study of teachers' life stories and their work identity
- Authors: Heaton, Pamela Jane
- Date: 2000
- Subjects: Identity (Psychology) -- Case studies , Teachers -- Case studies , Women teachers -- South Africa , Education -- South Africa -- History , Education -- South Africa -- Eastern Cape , Women teachers -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2989 , http://hdl.handle.net/10962/d1002498 , Identity (Psychology) -- Case studies , Teachers -- Case studies , Women teachers -- South Africa , Education -- South Africa -- History , Education -- South Africa -- Eastern Cape , Women teachers -- South Africa -- Eastern Cape
- Description: Media coverage of the poor state of this country's education system has described public images of the teaching profession which provide a context for the research described in this paper. The research is concerned with how and to what extent work identity is reflected in the life stories of five female teachers from a rural village in the Eastern Cape. A social constructionist approach is taken to the meaning and construction of identity, and the paper describes the process of a narrative method of analyzing and interpreting the stories. An initial analysis reveals that the participants had few career options and little choice of career. Further analysis is concerned with interpreting how the teachers create coherence in their stories around this lack of choice as well as within the larger social and historical context. Simultaneously there is an interpretation of the participants' work identity. The teachers create coherence in their narratives around their families and their socioeconomic or cultural circumstances, but make no explicit reference to the political context of their work choices, which were made in the context of the restraints of the Apartheid era. From each teacher's story an understanding of their unique work identity emerges. These alternative understandings provide a contrast to the images constructed by the media.
- Full Text:
- Date Issued: 2000
- Authors: Heaton, Pamela Jane
- Date: 2000
- Subjects: Identity (Psychology) -- Case studies , Teachers -- Case studies , Women teachers -- South Africa , Education -- South Africa -- History , Education -- South Africa -- Eastern Cape , Women teachers -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2989 , http://hdl.handle.net/10962/d1002498 , Identity (Psychology) -- Case studies , Teachers -- Case studies , Women teachers -- South Africa , Education -- South Africa -- History , Education -- South Africa -- Eastern Cape , Women teachers -- South Africa -- Eastern Cape
- Description: Media coverage of the poor state of this country's education system has described public images of the teaching profession which provide a context for the research described in this paper. The research is concerned with how and to what extent work identity is reflected in the life stories of five female teachers from a rural village in the Eastern Cape. A social constructionist approach is taken to the meaning and construction of identity, and the paper describes the process of a narrative method of analyzing and interpreting the stories. An initial analysis reveals that the participants had few career options and little choice of career. Further analysis is concerned with interpreting how the teachers create coherence in their stories around this lack of choice as well as within the larger social and historical context. Simultaneously there is an interpretation of the participants' work identity. The teachers create coherence in their narratives around their families and their socioeconomic or cultural circumstances, but make no explicit reference to the political context of their work choices, which were made in the context of the restraints of the Apartheid era. From each teacher's story an understanding of their unique work identity emerges. These alternative understandings provide a contrast to the images constructed by the media.
- Full Text:
- Date Issued: 2000
A new role for the non-aligned movement in a post-cold war era
- Authors: Chetty, Mahesh
- Date: 2000
- Subjects: Non-Aligned Movement , Nonalignment , Nonalignment -- Developing countries , International police
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2767 , http://hdl.handle.net/10962/d1002977 , Non-Aligned Movement , Nonalignment , Nonalignment -- Developing countries , International police
- Description: With the disappearance of the superpower conflict that characterised the Cold War era, many observers have begun to question whether the Non-Aligned Movement (NAM) has a role to play in the post Cold War era. However the emergence of a number of issues on the international agenda, such as United Nations peacekeeping operations, global environmental issues and an increasing unwillingness on the part of the major economic powers to abide by GATT/WTO rules, have increasingly become of concern to non-aligned states. However whilst the United States has recognised that these issues require leadership in dealing with them, it has not been willing to supply that leadership. It shall therefore be argued that the changing nature of hegemony in world politics has set conditions that allow non-aligned middle powers and institutions greater scope for action and influence. The emergence of these issues has provided a scope for non-aligned middle powers, acting in accordance with their interests to play alternate leadership roles within an expanded scope for institutions, such as organisations, regimes and multilateralism, in addressing the interests of non-aligned states. Firstly in looking at an expanded role for organisations, the United States has increasingly been unwilling to play a leadership role within UN peacekeeping operations. The continuing importance of the neutrality of UN peacekeeping operations has provided a scope for nonaligned middle powers to play a burden-sharing role with the great powers in addressing the concerns of non-aligned states with regard to these operations. Secondly in looking at an expanded scope for regimes, the emergence of a regime in the issue of ozone depletion may provide a foundation to analyse how non-aligned middle powers may play a bridge-building role between North and South in the issue of climate change. Middle powers could therefore play this role in the absence of United States leadership within this issue. Thirdly, the role of the Cairns Group within the Uruguay Round in addressing non-aligned states’ interests of maintaining stable agricultural trade, can be seen as a model of small group multilateralism in bridging the divide between the major powers in issue specific areas.
- Full Text:
- Date Issued: 2000
- Authors: Chetty, Mahesh
- Date: 2000
- Subjects: Non-Aligned Movement , Nonalignment , Nonalignment -- Developing countries , International police
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2767 , http://hdl.handle.net/10962/d1002977 , Non-Aligned Movement , Nonalignment , Nonalignment -- Developing countries , International police
- Description: With the disappearance of the superpower conflict that characterised the Cold War era, many observers have begun to question whether the Non-Aligned Movement (NAM) has a role to play in the post Cold War era. However the emergence of a number of issues on the international agenda, such as United Nations peacekeeping operations, global environmental issues and an increasing unwillingness on the part of the major economic powers to abide by GATT/WTO rules, have increasingly become of concern to non-aligned states. However whilst the United States has recognised that these issues require leadership in dealing with them, it has not been willing to supply that leadership. It shall therefore be argued that the changing nature of hegemony in world politics has set conditions that allow non-aligned middle powers and institutions greater scope for action and influence. The emergence of these issues has provided a scope for non-aligned middle powers, acting in accordance with their interests to play alternate leadership roles within an expanded scope for institutions, such as organisations, regimes and multilateralism, in addressing the interests of non-aligned states. Firstly in looking at an expanded role for organisations, the United States has increasingly been unwilling to play a leadership role within UN peacekeeping operations. The continuing importance of the neutrality of UN peacekeeping operations has provided a scope for nonaligned middle powers to play a burden-sharing role with the great powers in addressing the concerns of non-aligned states with regard to these operations. Secondly in looking at an expanded scope for regimes, the emergence of a regime in the issue of ozone depletion may provide a foundation to analyse how non-aligned middle powers may play a bridge-building role between North and South in the issue of climate change. Middle powers could therefore play this role in the absence of United States leadership within this issue. Thirdly, the role of the Cairns Group within the Uruguay Round in addressing non-aligned states’ interests of maintaining stable agricultural trade, can be seen as a model of small group multilateralism in bridging the divide between the major powers in issue specific areas.
- Full Text:
- Date Issued: 2000
A portfolio of original compositions with a commentary
- Authors: Nkuna, Musa
- Date: 2000
- Subjects: String quartets -- Scores Song cycles -- Scores Music -- Africa -- Scores
- Language: English
- Type: text , Thesis , Masters , MMus
- Identifier: vital:2698 , http://hdl.handle.net/10962/d1018689
- Description: This portfolio consists of four diverse original compositions written in 1999 : a string quartet, a cello suite and a set of two choral pieces.
- Full Text:
- Date Issued: 2000
- Authors: Nkuna, Musa
- Date: 2000
- Subjects: String quartets -- Scores Song cycles -- Scores Music -- Africa -- Scores
- Language: English
- Type: text , Thesis , Masters , MMus
- Identifier: vital:2698 , http://hdl.handle.net/10962/d1018689
- Description: This portfolio consists of four diverse original compositions written in 1999 : a string quartet, a cello suite and a set of two choral pieces.
- Full Text:
- Date Issued: 2000
A Scottish bellfounder (letter)
- Authors: Lewis, Colin A
- Date: 2000
- Language: English
- Type: Article
- Identifier: vital:6180 , http://hdl.handle.net/10962/d1012374 , http://www.ringingworld.co.uk
- Description: Colin Lewis was Professor of Geography at Rhodes University, Grahamstown, South Africa from 1989 until his retirement at the end of 2007. In 1990, with the strong support of the incumbent Vice-Chancellor, Dr Derek Henderson, he instigated the Certificate in Change Ringing (Church Bell Ringing) in the Rhodes University Department of Music and Musicology - the first such course to be offered in Africa. Since that date he has lectured in the basic theory, and taught the practice of change ringing. He is the Ringing Master of the Cathedral of St Michael and St George, Grahamstown, South Africa.
- Full Text:
- Date Issued: 2000
- Authors: Lewis, Colin A
- Date: 2000
- Language: English
- Type: Article
- Identifier: vital:6180 , http://hdl.handle.net/10962/d1012374 , http://www.ringingworld.co.uk
- Description: Colin Lewis was Professor of Geography at Rhodes University, Grahamstown, South Africa from 1989 until his retirement at the end of 2007. In 1990, with the strong support of the incumbent Vice-Chancellor, Dr Derek Henderson, he instigated the Certificate in Change Ringing (Church Bell Ringing) in the Rhodes University Department of Music and Musicology - the first such course to be offered in Africa. Since that date he has lectured in the basic theory, and taught the practice of change ringing. He is the Ringing Master of the Cathedral of St Michael and St George, Grahamstown, South Africa.
- Full Text:
- Date Issued: 2000
A survey of Butterworth senior secondary school teachers' views on the relationship between teacher involvement in decision-making and morale
- Authors: Nongwe, Tozamile Johnson
- Date: 2000
- Subjects: Education -- South Africa -- Decision making Decision making -- Case studies Teacher morale Vuli-Valley Senior Secondary School
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1787 , http://hdl.handle.net/10962/d1003672
- Description: Tbe purpose of this survey was to investigate Butterworth Senior Secondary School teachers' views on the relationship between teacher involvement in decision-making and morale. Out of four Butterworth Senior Secondary Schools with a population of about eigbhy six teachers, thirty teachers were willing participants in the research study. The teachers come from a homogeneous background (Xhosa-speaking). Questionnaires were administered to tbe sample subjects (population). The results (responses) of these teacbers (respondents) were then analyzed. After the analysis of their results, it became clear that there is a relationship between teacher involvement in decision-making and morale. Thus, the findings did not support the null hypothesis which stated that Butterworth Senior Secondary Scbool teachers see no relationship between their involvement in decision-making and morale.
- Full Text:
- Date Issued: 2000
- Authors: Nongwe, Tozamile Johnson
- Date: 2000
- Subjects: Education -- South Africa -- Decision making Decision making -- Case studies Teacher morale Vuli-Valley Senior Secondary School
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1787 , http://hdl.handle.net/10962/d1003672
- Description: Tbe purpose of this survey was to investigate Butterworth Senior Secondary School teachers' views on the relationship between teacher involvement in decision-making and morale. Out of four Butterworth Senior Secondary Schools with a population of about eigbhy six teachers, thirty teachers were willing participants in the research study. The teachers come from a homogeneous background (Xhosa-speaking). Questionnaires were administered to tbe sample subjects (population). The results (responses) of these teacbers (respondents) were then analyzed. After the analysis of their results, it became clear that there is a relationship between teacher involvement in decision-making and morale. Thus, the findings did not support the null hypothesis which stated that Butterworth Senior Secondary Scbool teachers see no relationship between their involvement in decision-making and morale.
- Full Text:
- Date Issued: 2000
A taxonomic and ecological review of Pseudocloeon glaucum (Agnew)(Ephemeroptera: Baetidae)
- Lugo-Ortiz, C R, de Moor, Ferdy C, Barber-James, Helen M
- Authors: Lugo-Ortiz, C R , de Moor, Ferdy C , Barber-James, Helen M
- Date: 2000
- Language: English
- Type: Article
- Identifier: vital:7007 , http://hdl.handle.net/10962/d1008385
- Description: Pseudocloeon masai (Lugo-Ortiz and McCafferty), P. nadineae (Lugo-Ortiz and McCafferty) and P. quintum (Agnew) are junior subjective synonyms of P. glaucum (Agnew). Larvae of P. glaucum manifest a wide range of variation in mouthpart morphology, particularly with respect to the development of the distomedial process of segment 2 of the labial palps, body size, general body colour and abdominal colour pattern. Such variation is observed in different cohorts and populations, and explains why several names have been applied to the same species. Larvae of P. glaucum also have considerable ecological tolerance, accounting for the abundance and widespread distribution of the species in the Afrotropical Region. New records from Kenya, Lesotho, Namibia and Zimbabwe are provided.
- Full Text:
- Date Issued: 2000
- Authors: Lugo-Ortiz, C R , de Moor, Ferdy C , Barber-James, Helen M
- Date: 2000
- Language: English
- Type: Article
- Identifier: vital:7007 , http://hdl.handle.net/10962/d1008385
- Description: Pseudocloeon masai (Lugo-Ortiz and McCafferty), P. nadineae (Lugo-Ortiz and McCafferty) and P. quintum (Agnew) are junior subjective synonyms of P. glaucum (Agnew). Larvae of P. glaucum manifest a wide range of variation in mouthpart morphology, particularly with respect to the development of the distomedial process of segment 2 of the labial palps, body size, general body colour and abdominal colour pattern. Such variation is observed in different cohorts and populations, and explains why several names have been applied to the same species. Larvae of P. glaucum also have considerable ecological tolerance, accounting for the abundance and widespread distribution of the species in the Afrotropical Region. New records from Kenya, Lesotho, Namibia and Zimbabwe are provided.
- Full Text:
- Date Issued: 2000
Abissa
- Betika (composer, performer), Ntoumba Minka (arranger, bass guitar)), Ernest Mvouama (synthesiser), Briskard Kouadio (accoustic guitar), Dallas, Briskard Kouadio (accoustic guitar), Kouaho (percussion), Donguy, Betuel, Ntoumba, Minka, Betika, Kouaho, Jean Gnanzou (chorus), Awa Diabate, Sanota Doumbie (chorus), Ernest Mvouama
- Authors: Betika (composer, performer) , Ntoumba Minka (arranger, bass guitar)) , Ernest Mvouama (synthesiser) , Briskard Kouadio (accoustic guitar) , Dallas, Briskard Kouadio (accoustic guitar) , Kouaho (percussion) , Donguy, Betuel, Ntoumba, Minka, Betika, Kouaho, Jean Gnanzou (chorus) , Awa Diabate, Sanota Doumbie (chorus) , Ernest Mvouama
- Date: 2000
- Subjects: Popular music , Popular music--Africa, West , Africa Cote d'Ivoire Grand-Bassam f-ml
- Language: French
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/127484 , vital:36016 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDCO4-02
- Description: Singing accompanied by synthesiser, percussion, guitars
- Full Text: false
- Date Issued: 2000
- Authors: Betika (composer, performer) , Ntoumba Minka (arranger, bass guitar)) , Ernest Mvouama (synthesiser) , Briskard Kouadio (accoustic guitar) , Dallas, Briskard Kouadio (accoustic guitar) , Kouaho (percussion) , Donguy, Betuel, Ntoumba, Minka, Betika, Kouaho, Jean Gnanzou (chorus) , Awa Diabate, Sanota Doumbie (chorus) , Ernest Mvouama
- Date: 2000
- Subjects: Popular music , Popular music--Africa, West , Africa Cote d'Ivoire Grand-Bassam f-ml
- Language: French
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/127484 , vital:36016 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDCO4-02
- Description: Singing accompanied by synthesiser, percussion, guitars
- Full Text: false
- Date Issued: 2000
Academic literacy in management education
- Pearse, Noel J, Amos, Trevor L
- Authors: Pearse, Noel J , Amos, Trevor L
- Date: 2000
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/270065 , vital:54392 , xlink:href="https://hdl.handle.net/10520/EJC36783"
- Description: Although management education aims to equip students with relevant knowledge, skills and competencies, making explicit and developing the cognitive thought processes necessary for management students to deal effectively with the current and future demands of the world of work, have been neglected. This article argues for the development of "complicated understanding" (Bartunek, Gordon and Weathersby 1983) in management students, through cultivating academic literacy. Using mediation, reflective inquiry and reflective writing interactively, it is illustrated how academic literacy could be promoted at the post-graduate level.
- Full Text:
- Date Issued: 2000
- Authors: Pearse, Noel J , Amos, Trevor L
- Date: 2000
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/270065 , vital:54392 , xlink:href="https://hdl.handle.net/10520/EJC36783"
- Description: Although management education aims to equip students with relevant knowledge, skills and competencies, making explicit and developing the cognitive thought processes necessary for management students to deal effectively with the current and future demands of the world of work, have been neglected. This article argues for the development of "complicated understanding" (Bartunek, Gordon and Weathersby 1983) in management students, through cultivating academic literacy. Using mediation, reflective inquiry and reflective writing interactively, it is illustrated how academic literacy could be promoted at the post-graduate level.
- Full Text:
- Date Issued: 2000
Aduna
- Vieux Marius Seck (composer, lead singer, rhythm guitar, accoustic guitar, chorus), Racine Ly (solo guitar), Ousmane Wade (keyboard), Youssou Camara (drums), Moussa Traore (percussions), Sam Thiam (tama), Fama Lo (chorus), Samba Laobe Ndiaye (bass guitar, arranger, recorded by), Studio 2000
- Authors: Vieux Marius Seck (composer, lead singer, rhythm guitar, accoustic guitar, chorus) , Racine Ly (solo guitar) , Ousmane Wade (keyboard) , Youssou Camara (drums) , Moussa Traore (percussions) , Sam Thiam (tama) , Fama Lo (chorus) , Samba Laobe Ndiaye (bass guitar, arranger, recorded by) , Studio 2000
- Date: 2000
- Subjects: Popular music , Popular music--Africa, West , Africa Senegal Dakar f-sg
- Language: Wolof
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/128062 , vital:36071 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDC09-02
- Description: Senegalese band featuring singing accompanied by keyboard, percussion, guitar and talking drum (tama)
- Full Text: false
- Date Issued: 2000
- Authors: Vieux Marius Seck (composer, lead singer, rhythm guitar, accoustic guitar, chorus) , Racine Ly (solo guitar) , Ousmane Wade (keyboard) , Youssou Camara (drums) , Moussa Traore (percussions) , Sam Thiam (tama) , Fama Lo (chorus) , Samba Laobe Ndiaye (bass guitar, arranger, recorded by) , Studio 2000
- Date: 2000
- Subjects: Popular music , Popular music--Africa, West , Africa Senegal Dakar f-sg
- Language: Wolof
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/128062 , vital:36071 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDC09-02
- Description: Senegalese band featuring singing accompanied by keyboard, percussion, guitar and talking drum (tama)
- Full Text: false
- Date Issued: 2000
Advancing Social Transformation in the Era of Globalisation
- COSATU
- Authors: COSATU
- Date: July 2000
- Subjects: COSATU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/137600 , vital:37541
- Description: The COSATU Central Executive Committee Lekgotla endorsed this document in May 2000. It aims to initiate a discussion in COSATU and the democratic movement as a whole on the state of the transformation and our progress in taking forward the National Democratic Revolution (NDR). This process should inform the development of resolutions for COSATU's Seventh National Congress. The years since the transition to democracy in 1994 have seen fundamental shifts in the political economy of South Africa. These shifts present new challenges for COSATU and the democratic movement as a whole. To address them requires reflection on the basic trends in society and our strategies for pursuing the National Democratic Revolution (NDR). This document first reviews progress and setbacks in achieving these goals since the transition to democracy in 1994. In that context, it explores current attempts to rewrite the aims of the NDR. Above all, some groups want to redefine the NDR merely to provide equal opportunities for all, irrespective of race. This tendency would stop the NDR before it achieves more fundamental reconstruction and development toward a non-racial, nonsexist society on the basis of democ- ratisation of the state and the economy. After considering these issues, the document explores changes in the balance of power, in terms of the political arena, the nature of capital, international developments, the state and the Alliance. Finally, it points to some implications for the development of transformatory programmes by COSATU and the Alliance.
- Full Text:
- Date Issued: July 2000
- Authors: COSATU
- Date: July 2000
- Subjects: COSATU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/137600 , vital:37541
- Description: The COSATU Central Executive Committee Lekgotla endorsed this document in May 2000. It aims to initiate a discussion in COSATU and the democratic movement as a whole on the state of the transformation and our progress in taking forward the National Democratic Revolution (NDR). This process should inform the development of resolutions for COSATU's Seventh National Congress. The years since the transition to democracy in 1994 have seen fundamental shifts in the political economy of South Africa. These shifts present new challenges for COSATU and the democratic movement as a whole. To address them requires reflection on the basic trends in society and our strategies for pursuing the National Democratic Revolution (NDR). This document first reviews progress and setbacks in achieving these goals since the transition to democracy in 1994. In that context, it explores current attempts to rewrite the aims of the NDR. Above all, some groups want to redefine the NDR merely to provide equal opportunities for all, irrespective of race. This tendency would stop the NDR before it achieves more fundamental reconstruction and development toward a non-racial, nonsexist society on the basis of democ- ratisation of the state and the economy. After considering these issues, the document explores changes in the balance of power, in terms of the political arena, the nature of capital, international developments, the state and the Alliance. Finally, it points to some implications for the development of transformatory programmes by COSATU and the Alliance.
- Full Text:
- Date Issued: July 2000
AES-24 and MIDINet-A Comparative Study of Their Object Models and Implementations
- Foss, Richard, Klinkradt, Bradley
- Authors: Foss, Richard , Klinkradt, Bradley
- Date: 2000
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/427390 , vital:72435 , https://www.aes.org/e-lib/browse.cfm?elib=9220
- Description: AES-24 and MIDINet object models have been used to create corresponding implementations. Both implementations utilize a network of IBM PCs running the Windows operating system. The transport protocol in each case is the Internet Protocol (IP). The object models of the two systems have some differences and similarities that have an impact on the application protocols. Arising from this study are pointers toward the incorporation of MIDI transport into the AES-24 framework.
- Full Text:
- Date Issued: 2000
- Authors: Foss, Richard , Klinkradt, Bradley
- Date: 2000
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/427390 , vital:72435 , https://www.aes.org/e-lib/browse.cfm?elib=9220
- Description: AES-24 and MIDINet object models have been used to create corresponding implementations. Both implementations utilize a network of IBM PCs running the Windows operating system. The transport protocol in each case is the Internet Protocol (IP). The object models of the two systems have some differences and similarities that have an impact on the application protocols. Arising from this study are pointers toward the incorporation of MIDI transport into the AES-24 framework.
- Full Text:
- Date Issued: 2000
Africa Unity
- Founy Faya (author, composer, lead vocal), Marcelin Yace (flute), Evan's Yace (guitar, arrangement), Jojo (bass), Kone Ibrahim, Founy Faya (percussion), Astride, Oliza, Hariton T Cheky (chorus), Showbiz
- Authors: Founy Faya (author, composer, lead vocal) , Marcelin Yace (flute) , Evan's Yace (guitar, arrangement) , Jojo (bass) , Kone Ibrahim, Founy Faya (percussion) , Astride, Oliza, Hariton T Cheky (chorus) , Showbiz
- Date: 2000
- Subjects: Popular music , Reggae music , Africa Cote d'Ivoire Abidjan f-iv
- Language: French , English
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/129641 , vital:36315 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDC31-02
- Description: Reggae music from Cote d'Ivoire's Burkinabe's diaspora
- Full Text: false
- Date Issued: 2000
- Authors: Founy Faya (author, composer, lead vocal) , Marcelin Yace (flute) , Evan's Yace (guitar, arrangement) , Jojo (bass) , Kone Ibrahim, Founy Faya (percussion) , Astride, Oliza, Hariton T Cheky (chorus) , Showbiz
- Date: 2000
- Subjects: Popular music , Reggae music , Africa Cote d'Ivoire Abidjan f-iv
- Language: French , English
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/129641 , vital:36315 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDC31-02
- Description: Reggae music from Cote d'Ivoire's Burkinabe's diaspora
- Full Text: false
- Date Issued: 2000
Ah! les hommes
- Betika (composer, performer), Ntoumba Minka (arranger, bass guitar)), Ernest Mvouama (synthesiser, Briskard Kouadio (accoustic guitar), Kouaho (percussion), Donguy, Betuel, Ntoumba, Minka, Betika, Kouaho, Jean Gnanzou (chorus), Awa Diabate, Sanota Doumbie (chorus), Ernest Mvouama
- Authors: Betika (composer, performer) , Ntoumba Minka (arranger, bass guitar)) , Ernest Mvouama (synthesiser , Briskard Kouadio (accoustic guitar) , Kouaho (percussion) , Donguy, Betuel, Ntoumba, Minka, Betika, Kouaho, Jean Gnanzou (chorus) , Awa Diabate, Sanota Doumbie (chorus) , Ernest Mvouama
- Date: 2000
- Subjects: Popular music , Popular music--Africa, West , Africa Cote d'Ivoire Grand-Bassam f-ml
- Language: French
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/127459 , vital:36013 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDCO4-01
- Description: Ivorian band with solo and chorus,accompained by synthesiser, guitars and percission
- Full Text: false
- Date Issued: 2000
- Authors: Betika (composer, performer) , Ntoumba Minka (arranger, bass guitar)) , Ernest Mvouama (synthesiser , Briskard Kouadio (accoustic guitar) , Kouaho (percussion) , Donguy, Betuel, Ntoumba, Minka, Betika, Kouaho, Jean Gnanzou (chorus) , Awa Diabate, Sanota Doumbie (chorus) , Ernest Mvouama
- Date: 2000
- Subjects: Popular music , Popular music--Africa, West , Africa Cote d'Ivoire Grand-Bassam f-ml
- Language: French
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/127459 , vital:36013 , International Library of African Music, Rhodes University, Grahamstown, South Africa , SDCO4-01
- Description: Ivorian band with solo and chorus,accompained by synthesiser, guitars and percission
- Full Text: false
- Date Issued: 2000
Ammonia removal from water by ion exchange using South African and Zambian zeolite samples
- Authors: Mwale, Monica
- Date: 2000
- Subjects: Ammonia -- Toxicology , Water -- Purification , Zeolites , Ion exchange
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5215 , http://hdl.handle.net/10962/d1005058 , Ammonia -- Toxicology , Water -- Purification , Zeolites , Ion exchange
- Description: One problem of intensive fish culture systems is the progressive build-up of toxic wastes such as ammonia. The possibility of improving aquaculture water quality using two kinds of zeolite is discussed. Zeolites are alumino-silicates whose framework allows them to exchange cations. Ion exchange has been demonstrated to be competitive with other methods of ammonia removal due to the high selectivity for ammonia exhibited by zeolite materials. In this study an unknown Zambian zeolite (identified as laumontite by X-ray diffraction techniques) and Pratley clinoptilolite (a South African zeolite) were tested under laboratory conditions and in a fresh water recirculating system. Ammonia cation exchange capacities (CEC) and suitable application rates for efficient water treatment were determined using the batch and column ion exchange procedures. Estimated ammonia uptake, the most important criterion used to assess performance of zeolite filters was strongly influenced by zeolite type, particle size, pre-treatment, regeneration and ion exchange method used. Statistical analysis showed significant differences in average ammonia CEC values between clinoptilolite (14.94 mg g⁻¹) and laumontite (2.77 mg g⁻¹), with the former displaying a higher Na⁺ ® NH₄⁺ exchange rate especially in the early reaction stages. This difference accords with the higher purity of clinoptilolite, 47% as opposed to 4.7% for laumontite, which makes it a better zeolite for ammonium removal. CEC increased linearly as particle size of the clinoptilolite was reduced resulting in a linear regression model (y = 18.29 – 3.704 x; r² = 74%). Pre-treatment of clinoptilolite using 1N NaCl significantly improved the ammonia CEC of clinoptilolite. Overall performance of both the batch and column methods achieved after regeneration (18.3 mg g⁻¹) was 25% higher than the estimated CEC values (13.0 mg g⁻¹) for the unregenerated samples of clinoptilolite. Comparison of CEC estimates using Pratley clinoptilolite, showed that average batch CEC estimates were significantly lower than the column method estimates. The average ammonia CEC values estimated in a fresh water recirculating system (5.80 mg g⁻¹ and 4.12 mg g⁻¹ for the 0.7-1.0 and 1.0-1.4 mm particle sizes, respectively) were significantly lower than the column and batch estimates for the same particle sizes (P < 0.05). Some nitrite (NO₂) and nitrate (NO3) build up was experienced probably due to the growth of autotrophs in the filters. Mass balance of nitrogen (N) for the three treatments of the fish trial (0.7-1.0 mm, 1.0-1.4 mm and the control treatment that had no zeolite in the filter) indicated that less that 10% of the N was retained for growth. It was found that 60% of the NH₄-N present associated with the soluble N was available for absorption by the zeolite filter or biological nitrification and that a total of approximately 22% of NH₄-N available was absorbed by clinoptilolite. The results indicate that the rate of nitrification can be deductively estimated by allowing a zeolite filter to become a biological filter. It is concluded that water treatment by ion exchange using natural zeolites, provides a reliable and efficient method for ammonia removal and appears to be a viable supplementary water treatment method for fresh water systems.
- Full Text:
- Date Issued: 2000
- Authors: Mwale, Monica
- Date: 2000
- Subjects: Ammonia -- Toxicology , Water -- Purification , Zeolites , Ion exchange
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5215 , http://hdl.handle.net/10962/d1005058 , Ammonia -- Toxicology , Water -- Purification , Zeolites , Ion exchange
- Description: One problem of intensive fish culture systems is the progressive build-up of toxic wastes such as ammonia. The possibility of improving aquaculture water quality using two kinds of zeolite is discussed. Zeolites are alumino-silicates whose framework allows them to exchange cations. Ion exchange has been demonstrated to be competitive with other methods of ammonia removal due to the high selectivity for ammonia exhibited by zeolite materials. In this study an unknown Zambian zeolite (identified as laumontite by X-ray diffraction techniques) and Pratley clinoptilolite (a South African zeolite) were tested under laboratory conditions and in a fresh water recirculating system. Ammonia cation exchange capacities (CEC) and suitable application rates for efficient water treatment were determined using the batch and column ion exchange procedures. Estimated ammonia uptake, the most important criterion used to assess performance of zeolite filters was strongly influenced by zeolite type, particle size, pre-treatment, regeneration and ion exchange method used. Statistical analysis showed significant differences in average ammonia CEC values between clinoptilolite (14.94 mg g⁻¹) and laumontite (2.77 mg g⁻¹), with the former displaying a higher Na⁺ ® NH₄⁺ exchange rate especially in the early reaction stages. This difference accords with the higher purity of clinoptilolite, 47% as opposed to 4.7% for laumontite, which makes it a better zeolite for ammonium removal. CEC increased linearly as particle size of the clinoptilolite was reduced resulting in a linear regression model (y = 18.29 – 3.704 x; r² = 74%). Pre-treatment of clinoptilolite using 1N NaCl significantly improved the ammonia CEC of clinoptilolite. Overall performance of both the batch and column methods achieved after regeneration (18.3 mg g⁻¹) was 25% higher than the estimated CEC values (13.0 mg g⁻¹) for the unregenerated samples of clinoptilolite. Comparison of CEC estimates using Pratley clinoptilolite, showed that average batch CEC estimates were significantly lower than the column method estimates. The average ammonia CEC values estimated in a fresh water recirculating system (5.80 mg g⁻¹ and 4.12 mg g⁻¹ for the 0.7-1.0 and 1.0-1.4 mm particle sizes, respectively) were significantly lower than the column and batch estimates for the same particle sizes (P < 0.05). Some nitrite (NO₂) and nitrate (NO3) build up was experienced probably due to the growth of autotrophs in the filters. Mass balance of nitrogen (N) for the three treatments of the fish trial (0.7-1.0 mm, 1.0-1.4 mm and the control treatment that had no zeolite in the filter) indicated that less that 10% of the N was retained for growth. It was found that 60% of the NH₄-N present associated with the soluble N was available for absorption by the zeolite filter or biological nitrification and that a total of approximately 22% of NH₄-N available was absorbed by clinoptilolite. The results indicate that the rate of nitrification can be deductively estimated by allowing a zeolite filter to become a biological filter. It is concluded that water treatment by ion exchange using natural zeolites, provides a reliable and efficient method for ammonia removal and appears to be a viable supplementary water treatment method for fresh water systems.
- Full Text:
- Date Issued: 2000
An analysis of the effects of marriage, divorce and death on the child maintenance obligation in South African law with some comparative perspectives
- Authors: Clark, Brigitte
- Date: 2000
- Subjects: Child support -- Law and legislation -- South Africa Divorce -- South Africa Marriage -- South Africa Death
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3669 , http://hdl.handle.net/10962/d1003184
- Description: This thesis analyses the law of child maintenance in South Africa with particular reference to the effects of marriage, death and divorce on such an obligation. In the introductory section, the types of South African family are demographically and statistically sketched, from a socio-legal perspective with some reliance on interdisciplinary research to assess the prevalence of the AID/HIV epidemic in South Africa, and the effects of poverty and ageing on the incidence of marriage and death. In the second part of the thesis, the parental child maintenance obligation is analysed in the common law context. The effects of serial marriage and arificial conception are also analysed with regard to their effect on the concept of biological parent. The nature and definition of parenthood is examined and the diverse and fluid nature of parenthood in South African society is stressed, particularly in relation to children's welfare. One of the aims of the thesis is to indicate how parenthood refers to a fluid set of social practices which are both biologically and culturally situated and thus have a complex effect on the maintenance obligation. The procedural problems of enforcement are also analysed in the light of recent amendments to the law in terms of the Maintenance Act 99 of 1998 (not yet in force) and some further proposals for reform in this area are proposed. The third part of the thesis examines the state obligation to maintain children, especially in the light of the state's commitments to children in terms of the Constitution of the Republic of South Africa Act (l08 of 1996) and its international commitments in terms of the United Nations Convention on the Rights of the Child which was ratified by the South African government on 16 June 1995. In the fourth part of the thesis, there is some comparative analysis, firstly, of the procedural law reforms proposed in Namibia as a result of detailed research done there. Secondly, alternative methods of assessing and enforcing child maintenance obligations in Australia and England are examined and briefly assessed in relation to their possible implementation and efficacy in a South African context. Finally, the thesis concludes with an overall synopsis of the position in this country and some proposals for reform in the light of the international and constitutional commitments of the state.
- Full Text:
- Date Issued: 2000
- Authors: Clark, Brigitte
- Date: 2000
- Subjects: Child support -- Law and legislation -- South Africa Divorce -- South Africa Marriage -- South Africa Death
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3669 , http://hdl.handle.net/10962/d1003184
- Description: This thesis analyses the law of child maintenance in South Africa with particular reference to the effects of marriage, death and divorce on such an obligation. In the introductory section, the types of South African family are demographically and statistically sketched, from a socio-legal perspective with some reliance on interdisciplinary research to assess the prevalence of the AID/HIV epidemic in South Africa, and the effects of poverty and ageing on the incidence of marriage and death. In the second part of the thesis, the parental child maintenance obligation is analysed in the common law context. The effects of serial marriage and arificial conception are also analysed with regard to their effect on the concept of biological parent. The nature and definition of parenthood is examined and the diverse and fluid nature of parenthood in South African society is stressed, particularly in relation to children's welfare. One of the aims of the thesis is to indicate how parenthood refers to a fluid set of social practices which are both biologically and culturally situated and thus have a complex effect on the maintenance obligation. The procedural problems of enforcement are also analysed in the light of recent amendments to the law in terms of the Maintenance Act 99 of 1998 (not yet in force) and some further proposals for reform in this area are proposed. The third part of the thesis examines the state obligation to maintain children, especially in the light of the state's commitments to children in terms of the Constitution of the Republic of South Africa Act (l08 of 1996) and its international commitments in terms of the United Nations Convention on the Rights of the Child which was ratified by the South African government on 16 June 1995. In the fourth part of the thesis, there is some comparative analysis, firstly, of the procedural law reforms proposed in Namibia as a result of detailed research done there. Secondly, alternative methods of assessing and enforcing child maintenance obligations in Australia and England are examined and briefly assessed in relation to their possible implementation and efficacy in a South African context. Finally, the thesis concludes with an overall synopsis of the position in this country and some proposals for reform in the light of the international and constitutional commitments of the state.
- Full Text:
- Date Issued: 2000
An annotated checklist of the species of the Labroid fish families Labridae and Scaridae
- Parenti, Paolo, Randall, John E, 1924-
- Authors: Parenti, Paolo , Randall, John E, 1924-
- Date: 2000
- Language: English
- Type: Text
- Identifier: vital:15028 , http://hdl.handle.net/10962/d1019894 , ISSN 0073-4381 , Ichthyological Bulletin J.L.B. Smith Institute of Ichthyology; No. 68
- Description: An annotated checklist of the species of the fish families Labridae and Scaridae is presented; 541 valid species are recognized, including 68 genera and 453 species of labrids and 10 genera and 88 species of scarids. Thirty undescribed species of wrasses and two undescribed parrotfish species are also included. A list of nominal species is given, with their present assignments; nominal species of uncertain status are placed as incertae sedis and listed separately. A list of nomina nuda is also provided. The valid genera and species are listed alphabetically, with their synonyms and distributions. Examination of the original descriptions and type material (when extant) of previously unplaced nominal species of labroid fishes led to identification of 69 new synonyms. The generic names Artisia de Beaufort, 1939 and Emmeekia Jordan & Evermann, 1896 are here recognized as new synonyms of Halichoeres Ruppell, 1835. For the Labridae, 65 new synonyms of valid species are listed. Labrus psittaculus Richardson, 1840, a valid species of Pseudolabrus, is a primary homonym of Labrus psittaculus Lacepede, 1801; the next available name for this species is Labrichthys rubicunda Macleay, 1881 and the new combination Pseudolabrus rubicundus is proposed. The following new combinations are included: Pseudojulis inornatus Gilbert, 1890 is a valid species of Pseudojuloides; Xyrichtys perlas Wellington et al., 1994 is a valid species of Novaculichthys. For Scaridae, Sparus abildgaardi Bloch, 1791 is a senior synonym of Sparisoma chrysopterum (Bloch & Schneider, 1801), but a request of the International Commission has been made to reject abildgaardi in order to conserve S. chrysopterum; and Scarus visayanus Herre, 1933 is a new synonym of Scarus tricolor Bleeker, 1847. Pseudoscarus microcheilos Bleeker, 1861 is a synonym of Chlorurus strongylocephalus (Bleeker, 1854). , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 2000
- Authors: Parenti, Paolo , Randall, John E, 1924-
- Date: 2000
- Language: English
- Type: Text
- Identifier: vital:15028 , http://hdl.handle.net/10962/d1019894 , ISSN 0073-4381 , Ichthyological Bulletin J.L.B. Smith Institute of Ichthyology; No. 68
- Description: An annotated checklist of the species of the fish families Labridae and Scaridae is presented; 541 valid species are recognized, including 68 genera and 453 species of labrids and 10 genera and 88 species of scarids. Thirty undescribed species of wrasses and two undescribed parrotfish species are also included. A list of nominal species is given, with their present assignments; nominal species of uncertain status are placed as incertae sedis and listed separately. A list of nomina nuda is also provided. The valid genera and species are listed alphabetically, with their synonyms and distributions. Examination of the original descriptions and type material (when extant) of previously unplaced nominal species of labroid fishes led to identification of 69 new synonyms. The generic names Artisia de Beaufort, 1939 and Emmeekia Jordan & Evermann, 1896 are here recognized as new synonyms of Halichoeres Ruppell, 1835. For the Labridae, 65 new synonyms of valid species are listed. Labrus psittaculus Richardson, 1840, a valid species of Pseudolabrus, is a primary homonym of Labrus psittaculus Lacepede, 1801; the next available name for this species is Labrichthys rubicunda Macleay, 1881 and the new combination Pseudolabrus rubicundus is proposed. The following new combinations are included: Pseudojulis inornatus Gilbert, 1890 is a valid species of Pseudojuloides; Xyrichtys perlas Wellington et al., 1994 is a valid species of Novaculichthys. For Scaridae, Sparus abildgaardi Bloch, 1791 is a senior synonym of Sparisoma chrysopterum (Bloch & Schneider, 1801), but a request of the International Commission has been made to reject abildgaardi in order to conserve S. chrysopterum; and Scarus visayanus Herre, 1933 is a new synonym of Scarus tricolor Bleeker, 1847. Pseudoscarus microcheilos Bleeker, 1861 is a synonym of Chlorurus strongylocephalus (Bleeker, 1854). , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 2000
An appraisal of the production and utility of digital atlases in Africa: a case study of Swaziland
- Authors: Pettit, Louise Manda
- Date: 2000
- Subjects: Swaziland Atlases , Digital mapping , Geographic information systems , Cartography -- Data processing , Cartography -- Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4816 , http://hdl.handle.net/10962/d1005490 , Swaziland Atlases , Digital mapping , Geographic information systems , Cartography -- Data processing , Cartography -- Africa
- Description: This research will appraise the production and utility of digital atlases in an African context, using personal experience gained through the production of a digital atlas for Swaziland, the opinions obtained from other producers of African digital atlases and relevant literature. Since the 1950s, decision makers and researchers have viewed information as a powerful contributor to national development. Over the past thirty years, developed countries have increased the efficient collation and dissemination of geographic information through the utilization of the digital environment. The development of Geographic Information Systems (GIS) has increased the range of applications attainable in digital mapping projects. Applications have ranged from resource inventories to the monitoring of environmental degradation, crime patterns and service provision. The patchy history of data collection, analysis and mapping in Africa, has had a limiting effect on the ability of countries to identify, plan and control their resources efficiently. Despite the desire to automate the mapping process and reap some of the planning benefits evident in the developed world, Africa has not succeeded in mobilising full technological potential. Political instability, poor infrastructure, the absence of national policy guidelines, and a lack of skilled manpower are some of the issues which have limited utilization. Despite many of the hurdles faced by African countries, automated mapping and analysis technologies are still being pursued. The role of computers in the utilisation of data has become apparent through several means, one of which is the digital atlas. Analytical functions in many of these products allow situation modelling and provide superior graphic displays in comparison to their paper counterparts. Several African countries have embarked on the development of national digital databases and in some cases have produced digital national atlases. The potential to improve resource utilization, service provision and land use planning using these atlases, does exist. The production and utility of these atlases in an African context, however, needs closer assessment. "Computers don't clothe, don't cure, don't feed. Their power begins and ends with information. Their usefulness is therefore strictly linked to the ffectiveness of the information" (Gardner,1993:16).
- Full Text:
- Date Issued: 2000
- Authors: Pettit, Louise Manda
- Date: 2000
- Subjects: Swaziland Atlases , Digital mapping , Geographic information systems , Cartography -- Data processing , Cartography -- Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4816 , http://hdl.handle.net/10962/d1005490 , Swaziland Atlases , Digital mapping , Geographic information systems , Cartography -- Data processing , Cartography -- Africa
- Description: This research will appraise the production and utility of digital atlases in an African context, using personal experience gained through the production of a digital atlas for Swaziland, the opinions obtained from other producers of African digital atlases and relevant literature. Since the 1950s, decision makers and researchers have viewed information as a powerful contributor to national development. Over the past thirty years, developed countries have increased the efficient collation and dissemination of geographic information through the utilization of the digital environment. The development of Geographic Information Systems (GIS) has increased the range of applications attainable in digital mapping projects. Applications have ranged from resource inventories to the monitoring of environmental degradation, crime patterns and service provision. The patchy history of data collection, analysis and mapping in Africa, has had a limiting effect on the ability of countries to identify, plan and control their resources efficiently. Despite the desire to automate the mapping process and reap some of the planning benefits evident in the developed world, Africa has not succeeded in mobilising full technological potential. Political instability, poor infrastructure, the absence of national policy guidelines, and a lack of skilled manpower are some of the issues which have limited utilization. Despite many of the hurdles faced by African countries, automated mapping and analysis technologies are still being pursued. The role of computers in the utilisation of data has become apparent through several means, one of which is the digital atlas. Analytical functions in many of these products allow situation modelling and provide superior graphic displays in comparison to their paper counterparts. Several African countries have embarked on the development of national digital databases and in some cases have produced digital national atlases. The potential to improve resource utilization, service provision and land use planning using these atlases, does exist. The production and utility of these atlases in an African context, however, needs closer assessment. "Computers don't clothe, don't cure, don't feed. Their power begins and ends with information. Their usefulness is therefore strictly linked to the ffectiveness of the information" (Gardner,1993:16).
- Full Text:
- Date Issued: 2000
An assessment of the monkfish resource of Namibia
- Authors: Maartens, Lima
- Date: 2000
- Subjects: Lophius -- Namibia Lophius
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5231 , http://hdl.handle.net/10962/d1005074
- Description: Two monkfish species are caught off the coast of Namibia. These are Lophius vomerinus Valenciennes (1837) and L. vaillanti Regan (1903). L. vomerinus is the more abundant of the two and contributes approximately 99% to the total Namibian monkfish landings. The Namibian monkfish fishery is one of the largest and most valuable of its kind in the world. Two fishing fleets harvest the resource, viz. the monkfish and sole fleet and the hake directed fleet. In 1998 and 1999, monkfish were also harvested by one gillnet vessel that had an experimental right. In this study, the biology, abundance and exploitation patterns of monkfish were investigated and used as inputs into a stock assessment framework as a contribution towards the development of a management procedure for this species. Ground and sectioned otoliths and sectioned illicia were used to age Lophius vomerinus. The illicia provided more precise estimates of age, and growth was subsequently modelled using these age estimates. Growth in length and weight was best described by the threeparameter specialised von Bertalanffy model as Lt (cm TL) = 72.29 (1-e⁻°·¹⁴⁽t⁺°·³°⁾) and Wt (kg) = 3.96 (1-e⁻°·¹⁸⁽t⁺°·¹°⁾)²·⁹⁹ for males, and Lt (cm TL) = 111.98 (1-e⁻°·°⁸⁽t⁺°·³⁶⁾) and Wt (kg) = 6.92 (1-e⁻°·¹⁸⁽t⁻°·⁶⁴⁾)³·°³ for females. L. vomerinus is a slow-growing species with a life span in excess of 10 years. Reproductive activity was shown to occur throughout the year, with a slight peak during the winter months. The adult sex ratio of fish > 37 cm TL was biased towards females. Length-at-50% sexual maturity was attained at 32.1 cm TL for females and 23.7 cm TL for males. The rate of natural mortality was estimated at 0.15 year⁻¹, while fishing mortality rates during the 1970s, 1980s and 1990s were estimated at 0.01 year⁻¹, 0.04 year⁻¹ and 0.14 year⁻¹, respectively. Gillnetting for monkfish (300 mm stretched mesh) was highly efficient with a moderate bycatch of around 20% during the two years of operation. The main bycatch species were red crab, spider crab, squalid sharks, rays and Cape and Deep-water hake. The mean length of the monkfish caught in gillnets (67 cm TL) was significantly larger than the monkfish landed by the trawlers (38 cm TL) and less than 1% of immature fish were landed. Gillnet catch-per-unit-effort for monkfish fluctuated between 0.03 and 0.67 kg.day⁻¹.50 m net panel⁻¹, with a soak time of between one and sixteen days. More than 50% (by weight) of monkfish landed by monkfish and sole trawlers, consisted of fish below 36 cm TL. There was a significant increase in catches of juvenile monkfish during 1997 and 1998 in comparison to the period 1994 to 1996. Various types of rigid sorting grids were tested to release juvenile monkfish below 32 cm TL. Five grid designs were tested. These included an “Ex-it” grid with horizontal bars spaced at 55 mm, single grids with vertical and horizontal bars spaced at 55 mm and grids with circular openings of 110 and 168 mm in diameter. The most efficient design was the grid with circular openings of 110 cm in diameter, which ensured the escape of 66% of monkfish smaller than 31 cm TL. However, studies need to be undertaken to quantify the survival of released fish and to test the feasibility of using grid sorters on commercial monkfish and sole trawling gear. The monkfish resource was assessed by means of length cohort analyses, the Thompson and Bell predictive model and by way of a deterministic age-structured production modelling approach. The length cohort analysis models were sensitive to the rate of natural mortality and insensitive to changes in the terminal fishing mortality rate. These biases may, however, not be serious provided that estimates of abundance are used to reflect relative changes. Fish ranging between 26 and 59 cm TL are the most heavily exploited. The Thompson and Bell model predicted that the monkfish resource is exploited above MSY -levels and a reduction of approximately 40% in fishing effort would provide a higher yield. Yield-per-recruit ranged between 10 000 and 14 000 tonnes. Results should, however, be treated with caution, as the condition of steady state was not satisfied. The age-structured production model was tuned using trends in catch-per-unit-effort data, estimated by Generalised Linear Modeling, as well as relative abundance indices calculated from hake biomass surveys. The model was found to be sensitive to both the ‘steepness’ parameter h and estimates of natural mortality. The ‘depletion’ level of the monkfish resource is currently estimated to be 49%. Estimated coefficients of variation were high (> 63%) due to the lack of a consistent trend within the abundance indices to tune the model. Overall productivity of the monkfish resource was estimated to be approximately 16%, similar to other southern African demersal resources. Results of the risk analyses suggest that catches in excess of 7 000 tonnes may be unsustainable and that catches of 5 000 or 6 000 tonnes would decrease the risk of stock collapse and possibly lead to a recovery in the stock. Monkfish management strategies were reviewed and these were considered in relation to the results of this study. The following management recommendations were made: to follow the precautionary approach and implement a total allowable catch for monkfish; to implement rigid sorting grids as these would be the most appropriate way in which to reduce catches of juvenile monkfish; to restrict soak time, depth of operation and implement means to reduce ‘ghost fishing’ by gillnetting and finally, to develop a management procedure for Namibian monkfish with the main objective being the sustainable exploitation of the resource.
- Full Text:
- Date Issued: 2000
- Authors: Maartens, Lima
- Date: 2000
- Subjects: Lophius -- Namibia Lophius
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5231 , http://hdl.handle.net/10962/d1005074
- Description: Two monkfish species are caught off the coast of Namibia. These are Lophius vomerinus Valenciennes (1837) and L. vaillanti Regan (1903). L. vomerinus is the more abundant of the two and contributes approximately 99% to the total Namibian monkfish landings. The Namibian monkfish fishery is one of the largest and most valuable of its kind in the world. Two fishing fleets harvest the resource, viz. the monkfish and sole fleet and the hake directed fleet. In 1998 and 1999, monkfish were also harvested by one gillnet vessel that had an experimental right. In this study, the biology, abundance and exploitation patterns of monkfish were investigated and used as inputs into a stock assessment framework as a contribution towards the development of a management procedure for this species. Ground and sectioned otoliths and sectioned illicia were used to age Lophius vomerinus. The illicia provided more precise estimates of age, and growth was subsequently modelled using these age estimates. Growth in length and weight was best described by the threeparameter specialised von Bertalanffy model as Lt (cm TL) = 72.29 (1-e⁻°·¹⁴⁽t⁺°·³°⁾) and Wt (kg) = 3.96 (1-e⁻°·¹⁸⁽t⁺°·¹°⁾)²·⁹⁹ for males, and Lt (cm TL) = 111.98 (1-e⁻°·°⁸⁽t⁺°·³⁶⁾) and Wt (kg) = 6.92 (1-e⁻°·¹⁸⁽t⁻°·⁶⁴⁾)³·°³ for females. L. vomerinus is a slow-growing species with a life span in excess of 10 years. Reproductive activity was shown to occur throughout the year, with a slight peak during the winter months. The adult sex ratio of fish > 37 cm TL was biased towards females. Length-at-50% sexual maturity was attained at 32.1 cm TL for females and 23.7 cm TL for males. The rate of natural mortality was estimated at 0.15 year⁻¹, while fishing mortality rates during the 1970s, 1980s and 1990s were estimated at 0.01 year⁻¹, 0.04 year⁻¹ and 0.14 year⁻¹, respectively. Gillnetting for monkfish (300 mm stretched mesh) was highly efficient with a moderate bycatch of around 20% during the two years of operation. The main bycatch species were red crab, spider crab, squalid sharks, rays and Cape and Deep-water hake. The mean length of the monkfish caught in gillnets (67 cm TL) was significantly larger than the monkfish landed by the trawlers (38 cm TL) and less than 1% of immature fish were landed. Gillnet catch-per-unit-effort for monkfish fluctuated between 0.03 and 0.67 kg.day⁻¹.50 m net panel⁻¹, with a soak time of between one and sixteen days. More than 50% (by weight) of monkfish landed by monkfish and sole trawlers, consisted of fish below 36 cm TL. There was a significant increase in catches of juvenile monkfish during 1997 and 1998 in comparison to the period 1994 to 1996. Various types of rigid sorting grids were tested to release juvenile monkfish below 32 cm TL. Five grid designs were tested. These included an “Ex-it” grid with horizontal bars spaced at 55 mm, single grids with vertical and horizontal bars spaced at 55 mm and grids with circular openings of 110 and 168 mm in diameter. The most efficient design was the grid with circular openings of 110 cm in diameter, which ensured the escape of 66% of monkfish smaller than 31 cm TL. However, studies need to be undertaken to quantify the survival of released fish and to test the feasibility of using grid sorters on commercial monkfish and sole trawling gear. The monkfish resource was assessed by means of length cohort analyses, the Thompson and Bell predictive model and by way of a deterministic age-structured production modelling approach. The length cohort analysis models were sensitive to the rate of natural mortality and insensitive to changes in the terminal fishing mortality rate. These biases may, however, not be serious provided that estimates of abundance are used to reflect relative changes. Fish ranging between 26 and 59 cm TL are the most heavily exploited. The Thompson and Bell model predicted that the monkfish resource is exploited above MSY -levels and a reduction of approximately 40% in fishing effort would provide a higher yield. Yield-per-recruit ranged between 10 000 and 14 000 tonnes. Results should, however, be treated with caution, as the condition of steady state was not satisfied. The age-structured production model was tuned using trends in catch-per-unit-effort data, estimated by Generalised Linear Modeling, as well as relative abundance indices calculated from hake biomass surveys. The model was found to be sensitive to both the ‘steepness’ parameter h and estimates of natural mortality. The ‘depletion’ level of the monkfish resource is currently estimated to be 49%. Estimated coefficients of variation were high (> 63%) due to the lack of a consistent trend within the abundance indices to tune the model. Overall productivity of the monkfish resource was estimated to be approximately 16%, similar to other southern African demersal resources. Results of the risk analyses suggest that catches in excess of 7 000 tonnes may be unsustainable and that catches of 5 000 or 6 000 tonnes would decrease the risk of stock collapse and possibly lead to a recovery in the stock. Monkfish management strategies were reviewed and these were considered in relation to the results of this study. The following management recommendations were made: to follow the precautionary approach and implement a total allowable catch for monkfish; to implement rigid sorting grids as these would be the most appropriate way in which to reduce catches of juvenile monkfish; to restrict soak time, depth of operation and implement means to reduce ‘ghost fishing’ by gillnetting and finally, to develop a management procedure for Namibian monkfish with the main objective being the sustainable exploitation of the resource.
- Full Text:
- Date Issued: 2000
An empirical formula for estimating the water use of Scaevola plumieri
- Peter, Craig I, Ripley, Bradford S
- Authors: Peter, Craig I , Ripley, Bradford S
- Date: 2000
- Language: English
- Type: Article
- Identifier: vital:6530 , http://hdl.handle.net/10962/d1005971
- Description: Transpirational water loss of Scaevola plumieri (L) Vahl. (= Scaevola thunbergii Eckl. & Zeyh.) (Goodeniaceae), a dune pioneer plant along the eastern and southern coasts of South Africa, was measured over a wide range of atmospheric conditions and related to the atmospheric vapour pressure deficit (VPD). A plot of leaf transpiration rate (E) against VPD yielded a curvilinear relationship (r[sup 2] = 0.88, P = 0.000). As both leaf and canopy E were found to be closely coupled to atmospheric conditions, this correlation was used to calculate canopy E for entire days. The bulk volumes of water transpired per day were related to the mean daily temperature as recorded at a nearby weather station and were strongly related (r2 = 0.71, P = 0.0037). This correlation allowed the bulk volume of water transpired by one square metre of a S. plumieri-covered dune to be calculated on a daily basis for an entire year. Transpirational losses (566 litres) in 1997 were then compared with rainfall (539 litres), indicating that rainfall was perhaps insufficient to support the plants that year. Similar deficits were calculated for 1996, suggesting that plants were possibly reliant on water stored in the sand or taped ground water. This species showed an unusual positive response of increasing leaf conductance to increasing VPD over the range 0-3 kPa.
- Full Text: false
- Date Issued: 2000
- Authors: Peter, Craig I , Ripley, Bradford S
- Date: 2000
- Language: English
- Type: Article
- Identifier: vital:6530 , http://hdl.handle.net/10962/d1005971
- Description: Transpirational water loss of Scaevola plumieri (L) Vahl. (= Scaevola thunbergii Eckl. & Zeyh.) (Goodeniaceae), a dune pioneer plant along the eastern and southern coasts of South Africa, was measured over a wide range of atmospheric conditions and related to the atmospheric vapour pressure deficit (VPD). A plot of leaf transpiration rate (E) against VPD yielded a curvilinear relationship (r[sup 2] = 0.88, P = 0.000). As both leaf and canopy E were found to be closely coupled to atmospheric conditions, this correlation was used to calculate canopy E for entire days. The bulk volumes of water transpired per day were related to the mean daily temperature as recorded at a nearby weather station and were strongly related (r2 = 0.71, P = 0.0037). This correlation allowed the bulk volume of water transpired by one square metre of a S. plumieri-covered dune to be calculated on a daily basis for an entire year. Transpirational losses (566 litres) in 1997 were then compared with rainfall (539 litres), indicating that rainfall was perhaps insufficient to support the plants that year. Similar deficits were calculated for 1996, suggesting that plants were possibly reliant on water stored in the sand or taped ground water. This species showed an unusual positive response of increasing leaf conductance to increasing VPD over the range 0-3 kPa.
- Full Text: false
- Date Issued: 2000