'She travels alone and unattended’: the visit to the Eastern Cape of the botanical artist, Marianne North
- Authors: Beard, Margot
- Date: 2017
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/147759 , vital:38668 , https://doi.org/10.1080/00043389.2007.11877077
- Description: The visit of the botanical artist, Marianne North, to South Africa during 1882 to 1883, although frequently referred to, has not received much close attention; nor has her account of the visit, in her ‘Recollections of a happy’ life, been set against the actual conditions she would have encountered. This paper attempts to flesh out at least part of that visit, specifically the weeks she spent in the Eastern Cape Colony and, more particularly, her visits to Port Elizabeth, Grahamstown and Port Alfred. What were these three centres like at the time? Who were the people she mentions? Where did she stay? How do her observations tally with other accounts of the period?.
- Full Text:
- Date Issued: 2017
- Authors: Beard, Margot
- Date: 2017
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/147759 , vital:38668 , https://doi.org/10.1080/00043389.2007.11877077
- Description: The visit of the botanical artist, Marianne North, to South Africa during 1882 to 1883, although frequently referred to, has not received much close attention; nor has her account of the visit, in her ‘Recollections of a happy’ life, been set against the actual conditions she would have encountered. This paper attempts to flesh out at least part of that visit, specifically the weeks she spent in the Eastern Cape Colony and, more particularly, her visits to Port Elizabeth, Grahamstown and Port Alfred. What were these three centres like at the time? Who were the people she mentions? Where did she stay? How do her observations tally with other accounts of the period?.
- Full Text:
- Date Issued: 2017
Figuring maternity: Christine Dixie's Parturient Prospects
- Authors: Schmahmann, Brenda
- Date: 2017
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/147748 , vital:38667 , https://doi.org/10.1080/00043389.2007.11877068
- Description: The Interior, Birthing Tray and Parturition are three sub-sections of a project entitled Parturient Prospects that artist Christine Dixie began in 2005, when she was pregnant with her second child, and completed by the end of 2006. In Parturient Prospects, the author reveals, Dixie situates her experiences against Western discourses, especially images from early modern Europe. Focusing on the ways in which visual representations construct woman as ‘other’, Dixie invokes reference to not only representations of birth and maternity but also religious, medical and geographical images.
- Full Text:
- Date Issued: 2017
- Authors: Schmahmann, Brenda
- Date: 2017
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/147748 , vital:38667 , https://doi.org/10.1080/00043389.2007.11877068
- Description: The Interior, Birthing Tray and Parturition are three sub-sections of a project entitled Parturient Prospects that artist Christine Dixie began in 2005, when she was pregnant with her second child, and completed by the end of 2006. In Parturient Prospects, the author reveals, Dixie situates her experiences against Western discourses, especially images from early modern Europe. Focusing on the ways in which visual representations construct woman as ‘other’, Dixie invokes reference to not only representations of birth and maternity but also religious, medical and geographical images.
- Full Text:
- Date Issued: 2017
Marx, Weber and NGOs:
- Authors: Helliker, Kirk D
- Date: 2012
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/144738 , vital:38375 , DOI: 10.1080/21528586.2007.10419171
- Description: This article offers a sociological understanding of intermediary NGOs in the modern world. In does so by drawing on certain epistemological insights of Marx and Weber, and this entails methodologies of both deconstruction and reconstruction. In arguing against a sociological behaviourism that pervades the NGO literature, the article conceptualises intermediary NGOs as a ‘social form’ embodying contradictory relations. For analytical purposes, the contradiction between ‘the global’ and ‘the local’ is brought to the fore.
- Full Text:
- Date Issued: 2012
- Authors: Helliker, Kirk D
- Date: 2012
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/144738 , vital:38375 , DOI: 10.1080/21528586.2007.10419171
- Description: This article offers a sociological understanding of intermediary NGOs in the modern world. In does so by drawing on certain epistemological insights of Marx and Weber, and this entails methodologies of both deconstruction and reconstruction. In arguing against a sociological behaviourism that pervades the NGO literature, the article conceptualises intermediary NGOs as a ‘social form’ embodying contradictory relations. For analytical purposes, the contradiction between ‘the global’ and ‘the local’ is brought to the fore.
- Full Text:
- Date Issued: 2012
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
Compositionally diverse magmas erupted close together in space and time within a Karoo flood basalt crater complex:
- McClintock, Murray, Marsh, Julian S, White, James D L
- Authors: McClintock, Murray , Marsh, Julian S , White, James D L
- Date: 2008
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/144966 , vital:38396 , https://doi.org/10.1007/s00445-007-0178-6
- Description: Geochemical data and mapping from a Karoo flood basalt crater complex reveals new information about the ascent and eruption of magma batches during the earliest phases of flood basalt volcanism. Flood basalt eruptions at Sterkspruit, South Africa began with emplacement of thin lava flows before abruptly switching to explosive phreatomagmatic and magmatic activity that formed a nest of craters, spatter and tuff rings and cones that collectively comprise a crater complex >40 km2 filled by 9–18 km3 of volcaniclastic debris.
- Full Text:
- Date Issued: 2008
- Authors: McClintock, Murray , Marsh, Julian S , White, James D L
- Date: 2008
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/144966 , vital:38396 , https://doi.org/10.1007/s00445-007-0178-6
- Description: Geochemical data and mapping from a Karoo flood basalt crater complex reveals new information about the ascent and eruption of magma batches during the earliest phases of flood basalt volcanism. Flood basalt eruptions at Sterkspruit, South Africa began with emplacement of thin lava flows before abruptly switching to explosive phreatomagmatic and magmatic activity that formed a nest of craters, spatter and tuff rings and cones that collectively comprise a crater complex >40 km2 filled by 9–18 km3 of volcaniclastic debris.
- Full Text:
- Date Issued: 2008
10 Years of IEASA history
- International Education Association of South Africa (IEASA), Jooste, Nico
- Authors: International Education Association of South Africa (IEASA) , Jooste, Nico
- Date: 2007
- Subjects: International Education Association of South Africa -- History , Education, Higher -- South Africa , Education and globalization -- South Africa Student mobility -- Africa International education -- South Africa Education, Higher -- International cooperation , Universities and colleges -- South Africa , Technical Institutes -- South Africa , Vocational guidance -- South Africa
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/65356 , vital:28752 , ISBN 1920176004
- Description: [Preface - Nico Jooste]: For more than ten years, we have been involved in implementing internationalisation of South African Higher Education. The we I am referring too, are those who are both visionaries and passionately dedicated to the process of internationalisation. A small group of South African Higher Education administrators, academics and senior managers involved themselves in the process of internationalisation of their institutions, and collectively the South African system. This process of internationalisation started as an uncoordinated response to the demands of a South African higher education system that was determined to break with the past, and re-connect with global higher education, it was left to a few dedicated visionaries to create the support structure that would not only assist the higher education institutions, but also the system. The other bodies that were supposed to pay attention to this very important aspect of Higher Education in the 21st century were too busy with other, equally important, matters. It became clear that the priorities of organisations like SAUVCA were not internationalisation, and IEASA was established as the vehicle to promote it. This story of IEASA needed to be told. This book is not aimed at IEASA members only, but also at the broader higher education public. This is the story of an organisation that touched all parts of South African Higher Education society as well as the broader society. It is partly the ‘corporate memory’ of Internationalisation, as well as a reflection on achievements. Ten years looked like a short period to reflect on an organisations history, I am however of the opinion that in a society that is changing so rapidly, we need to reflect more frequently on the past so that we can plan a better future. For any historian operating in the modem era of electronic communication, access to sources of information has become a major challenge. IEASA, Thilor Manikam in particular, needs to be commended for the accurate record keeping of events over the past ten years. Kirstin Nussgruber very diligently captured the efforts of the forces driving the establishment of IEASA for the first two years. This book was mainly based on evidence gathered from minutes, reports and letters that are in the possession of the IEASA Office. I also had the privilege, and advantage, to be a member of the Executive Committee for the past five years. This book cannot be the last word on IEASA, as it is only the view of a member. The bias is thus toward IEASA and focusses mainly on its achievements. Chapter 3 focusses mainly on the achievements of a voluntary organisation. The efforts over the ten years of three persons namely. Roshen Kishun as President, Derek Swemmer as Treasurer, and Thilor Manikam as the Administrator stood out, and was the stabilising factor during the foundation years. The role of Roshen Kishun in the publication of Study South African cannot be underestimated. Without his vision, drive and effort, this publication would not be preparing for the launch of the seventh edition. It is a unique source of information about South African Higher Education. Very few other systems, if any. produce such a publication. Although the author was requested by the IEASA Executive Committee to write this book, the views expressed in this publication is not the views of the Executive Committee, but that of the author.
- Full Text:
- Date Issued: 2007
- Authors: International Education Association of South Africa (IEASA) , Jooste, Nico
- Date: 2007
- Subjects: International Education Association of South Africa -- History , Education, Higher -- South Africa , Education and globalization -- South Africa Student mobility -- Africa International education -- South Africa Education, Higher -- International cooperation , Universities and colleges -- South Africa , Technical Institutes -- South Africa , Vocational guidance -- South Africa
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/65356 , vital:28752 , ISBN 1920176004
- Description: [Preface - Nico Jooste]: For more than ten years, we have been involved in implementing internationalisation of South African Higher Education. The we I am referring too, are those who are both visionaries and passionately dedicated to the process of internationalisation. A small group of South African Higher Education administrators, academics and senior managers involved themselves in the process of internationalisation of their institutions, and collectively the South African system. This process of internationalisation started as an uncoordinated response to the demands of a South African higher education system that was determined to break with the past, and re-connect with global higher education, it was left to a few dedicated visionaries to create the support structure that would not only assist the higher education institutions, but also the system. The other bodies that were supposed to pay attention to this very important aspect of Higher Education in the 21st century were too busy with other, equally important, matters. It became clear that the priorities of organisations like SAUVCA were not internationalisation, and IEASA was established as the vehicle to promote it. This story of IEASA needed to be told. This book is not aimed at IEASA members only, but also at the broader higher education public. This is the story of an organisation that touched all parts of South African Higher Education society as well as the broader society. It is partly the ‘corporate memory’ of Internationalisation, as well as a reflection on achievements. Ten years looked like a short period to reflect on an organisations history, I am however of the opinion that in a society that is changing so rapidly, we need to reflect more frequently on the past so that we can plan a better future. For any historian operating in the modem era of electronic communication, access to sources of information has become a major challenge. IEASA, Thilor Manikam in particular, needs to be commended for the accurate record keeping of events over the past ten years. Kirstin Nussgruber very diligently captured the efforts of the forces driving the establishment of IEASA for the first two years. This book was mainly based on evidence gathered from minutes, reports and letters that are in the possession of the IEASA Office. I also had the privilege, and advantage, to be a member of the Executive Committee for the past five years. This book cannot be the last word on IEASA, as it is only the view of a member. The bias is thus toward IEASA and focusses mainly on its achievements. Chapter 3 focusses mainly on the achievements of a voluntary organisation. The efforts over the ten years of three persons namely. Roshen Kishun as President, Derek Swemmer as Treasurer, and Thilor Manikam as the Administrator stood out, and was the stabilising factor during the foundation years. The role of Roshen Kishun in the publication of Study South African cannot be underestimated. Without his vision, drive and effort, this publication would not be preparing for the launch of the seventh edition. It is a unique source of information about South African Higher Education. Very few other systems, if any. produce such a publication. Although the author was requested by the IEASA Executive Committee to write this book, the views expressed in this publication is not the views of the Executive Committee, but that of the author.
- Full Text:
- Date Issued: 2007
A Digital Forensic investigative model for business organisations
- Forrester, Jock, Irwin, Barry V W
- Authors: Forrester, Jock , Irwin, Barry V W
- Date: 2007
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/430078 , vital:72664 , https://www.researchgate.net/profile/Barry-Ir-win/publication/228783555_A_Digital_Forensic_investigative_model_for_business_organisations/links/53e9c5e80cf28f342f414987/A-Digital-Forensic-investigative-model-for-business-organisations.pdf
- Description: When a digital incident occurs there are generally three courses of ac-tions that are taken, generally dependant on the type of organisation within which the incident occurs, or which is responding the event. In the case of law enforcement the priority is to secure the crime scene, followed by the identification of evidentiary sources which should be dispatched to a specialist laboratory for analysis. In the case of an inci-dent military (or similar critical infrastructures) infrastructure the primary goal becomes one of risk identification and elimination, followed by re-covery and possible offensive measures. Where financial impact is caused by an incident, and revenue earning potential is adversely af-fected, as in the case of most commercial organisations), root cause analysis, and system remediation is of primary concern, with in-depth analysis of the how and why left until systems have been restored.
- Full Text:
- Date Issued: 2007
- Authors: Forrester, Jock , Irwin, Barry V W
- Date: 2007
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/430078 , vital:72664 , https://www.researchgate.net/profile/Barry-Ir-win/publication/228783555_A_Digital_Forensic_investigative_model_for_business_organisations/links/53e9c5e80cf28f342f414987/A-Digital-Forensic-investigative-model-for-business-organisations.pdf
- Description: When a digital incident occurs there are generally three courses of ac-tions that are taken, generally dependant on the type of organisation within which the incident occurs, or which is responding the event. In the case of law enforcement the priority is to secure the crime scene, followed by the identification of evidentiary sources which should be dispatched to a specialist laboratory for analysis. In the case of an inci-dent military (or similar critical infrastructures) infrastructure the primary goal becomes one of risk identification and elimination, followed by re-covery and possible offensive measures. Where financial impact is caused by an incident, and revenue earning potential is adversely af-fected, as in the case of most commercial organisations), root cause analysis, and system remediation is of primary concern, with in-depth analysis of the how and why left until systems have been restored.
- Full Text:
- Date Issued: 2007
A geopolitical analysis of long term internet network telescope traffic
- Irwin, Barry V W, Pilkington, Nik, Barnett, Richard J, Friedman, Blake
- Authors: Irwin, Barry V W , Pilkington, Nik , Barnett, Richard J , Friedman, Blake
- Date: 2007
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/428142 , vital:72489 , https://www.researchgate.net/profile/Barry-Ir-win/publication/228848896_A_geopolitical_analysis_of_long_term_internet_network_telescope_traffic/links/53e9c5190cf2fb1b9b672aee/A-geopolitical-analysis-of-long-term-internet-network-telescope-traffic.pdf
- Description: This paper presents results form the analysis of twelve months of net-work telescope traffic spanning 2005 and 2006, and details some of the tools developed. The most significant results of the analysis are high-lighted. In particular the bulk of traffic analysed had its source in the China from a volume perspective, but Eastern United States, and North Western Europe were shown to be primary sources when the number of unique hosts were considered. Traffic from African states (South Af-rica in particular) was also found to be surprisingly high. This unex-pected result may be due to the network locality preference of many automated agents. Both statistical and graphical analysis are present-ed. It is found that a country with a high penetration of broadband con-nectivity is likley to feature highly in Network telescope traffic, as are networks logically close to the telescope network.
- Full Text:
- Date Issued: 2007
- Authors: Irwin, Barry V W , Pilkington, Nik , Barnett, Richard J , Friedman, Blake
- Date: 2007
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/428142 , vital:72489 , https://www.researchgate.net/profile/Barry-Ir-win/publication/228848896_A_geopolitical_analysis_of_long_term_internet_network_telescope_traffic/links/53e9c5190cf2fb1b9b672aee/A-geopolitical-analysis-of-long-term-internet-network-telescope-traffic.pdf
- Description: This paper presents results form the analysis of twelve months of net-work telescope traffic spanning 2005 and 2006, and details some of the tools developed. The most significant results of the analysis are high-lighted. In particular the bulk of traffic analysed had its source in the China from a volume perspective, but Eastern United States, and North Western Europe were shown to be primary sources when the number of unique hosts were considered. Traffic from African states (South Af-rica in particular) was also found to be surprisingly high. This unex-pected result may be due to the network locality preference of many automated agents. Both statistical and graphical analysis are present-ed. It is found that a country with a high penetration of broadband con-nectivity is likley to feature highly in Network telescope traffic, as are networks logically close to the telescope network.
- Full Text:
- Date Issued: 2007
A naive salience-based method for speaker identification in fiction books
- Glass, Kevin R, Bangay, Shaun D
- Authors: Glass, Kevin R , Bangay, Shaun D
- Date: 2007
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/432627 , vital:72888 , https://pubmed.ncbi.nlm.nih.gov/10350927/
- Description: This paper presents a salience-based technique for the annotation of directly quoted speech from fiction text. In particular, this paper determines to what extent a naïve (without the use of complex machine learning or knowledge-based techniques) scoring technique can be used for the identification of the speaker of speech quotes. The presented technique makes use of a scoring technique, similar to that commonly found in knowledge-poor anaphora resolution research, as well as a set of hand-coded rules for the final identification of the speaker of each quote in the text. Speaker identification is shown to be achieved using three tasks: the identification of a speech-verb associated with a quote with a recall of 94.41%; the identification of the actor associated with a quote with a recall of 88.22%; and the selection of a speaker with an accuracy of 79.40%.
- Full Text:
- Date Issued: 2007
- Authors: Glass, Kevin R , Bangay, Shaun D
- Date: 2007
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/432627 , vital:72888 , https://pubmed.ncbi.nlm.nih.gov/10350927/
- Description: This paper presents a salience-based technique for the annotation of directly quoted speech from fiction text. In particular, this paper determines to what extent a naïve (without the use of complex machine learning or knowledge-based techniques) scoring technique can be used for the identification of the speaker of speech quotes. The presented technique makes use of a scoring technique, similar to that commonly found in knowledge-poor anaphora resolution research, as well as a set of hand-coded rules for the final identification of the speaker of each quote in the text. Speaker identification is shown to be achieved using three tasks: the identification of a speech-verb associated with a quote with a recall of 94.41%; the identification of the actor associated with a quote with a recall of 88.22%; and the selection of a speaker with an accuracy of 79.40%.
- Full Text:
- Date Issued: 2007
A preliminary perspective on the Office of the Vice-Chancellor and appeals related to exclusions and admissions
- Authors: Badat, Saleem
- Date: 2007
- Subjects: Rhodes University
- Language: English
- Type: text
- Identifier: vital:7644 , http://hdl.handle.net/10962/d1015772
- Full Text:
- Date Issued: 2007
- Authors: Badat, Saleem
- Date: 2007
- Subjects: Rhodes University
- Language: English
- Type: text
- Identifier: vital:7644 , http://hdl.handle.net/10962/d1015772
- Full Text:
- Date Issued: 2007
A probabilistic movement model for shortest path formation in virtual ant-like agents
- Chibaya, Colin, Bangay, Shaun D
- Authors: Chibaya, Colin , Bangay, Shaun D
- Date: 2007
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/433125 , vital:72945 , https://doi.org/10.1145/1292491.1292493
- Description: We propose a probabilistic movement model for controlling ant-like agents foraging between two points. Such agents are all identical, simple, autonomous and can only communicate indirectly through the environment. These agents secrete two types of pheromone, one to mark trails towards the goal and another to mark trails back to the starting point. Three pheromone perception strategies are proposed (Strategy A, B and C). Agents that use strategy A perceive the desirability of a neighbouring location as the difference between levels of attractive and repulsive pheromone in that location. With strategy B, agents perceive the desirability of a location as the quotient of levels of attractive and repulsive pheromone. Agents using strategy C determine the product of the levels of attractive pheromone with the complement of levels of repulsive pheromone. We conduct experiments to confirm directionality as emergent property of trails formed by agents that use each strategy. In addition, we compare path formation speed and the quality of the formed path under changes in the environment. We also investigate each strategy's robustness in environments that contain obstacles. Finally, we investigate how adaptive each strategy is when obstacles are eventually removed from the scene and find that the best strategy of these three is strategy A. Such a strategy provides useful guidelines to researchers in further applications of swarm intelligence metaphors for complex problem solving.
- Full Text:
- Date Issued: 2007
- Authors: Chibaya, Colin , Bangay, Shaun D
- Date: 2007
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/433125 , vital:72945 , https://doi.org/10.1145/1292491.1292493
- Description: We propose a probabilistic movement model for controlling ant-like agents foraging between two points. Such agents are all identical, simple, autonomous and can only communicate indirectly through the environment. These agents secrete two types of pheromone, one to mark trails towards the goal and another to mark trails back to the starting point. Three pheromone perception strategies are proposed (Strategy A, B and C). Agents that use strategy A perceive the desirability of a neighbouring location as the difference between levels of attractive and repulsive pheromone in that location. With strategy B, agents perceive the desirability of a location as the quotient of levels of attractive and repulsive pheromone. Agents using strategy C determine the product of the levels of attractive pheromone with the complement of levels of repulsive pheromone. We conduct experiments to confirm directionality as emergent property of trails formed by agents that use each strategy. In addition, we compare path formation speed and the quality of the formed path under changes in the environment. We also investigate each strategy's robustness in environments that contain obstacles. Finally, we investigate how adaptive each strategy is when obstacles are eventually removed from the scene and find that the best strategy of these three is strategy A. Such a strategy provides useful guidelines to researchers in further applications of swarm intelligence metaphors for complex problem solving.
- Full Text:
- Date Issued: 2007
Address at the opening of the OutRhodes Pride Week, 21 August 2007
- Authors: Badat, Saleem
- Date: 2007
- Subjects: Rhodes University
- Language: English
- Type: text
- Identifier: vital:7652 , http://hdl.handle.net/10962/d1015780
- Full Text:
- Date Issued: 2007
- Authors: Badat, Saleem
- Date: 2007
- Subjects: Rhodes University
- Language: English
- Type: text
- Identifier: vital:7652 , http://hdl.handle.net/10962/d1015780
- Full Text:
- Date Issued: 2007
Address at the unveiling of the plaque in memory of Ruth First at the Ruth First residence, Aug 2007
- Authors: Badat, Saleem
- Date: 2007
- Subjects: Rhodes University , First, Ruth, 1925-1982
- Language: English
- Type: text
- Identifier: vital:7656 , http://hdl.handle.net/10962/d1015784
- Full Text:
- Date Issued: 2007
Address at the unveiling of the plaque in memory of Ruth First at the Ruth First residence, Aug 2007
- Authors: Badat, Saleem
- Date: 2007
- Subjects: Rhodes University , First, Ruth, 1925-1982
- Language: English
- Type: text
- Identifier: vital:7656 , http://hdl.handle.net/10962/d1015784
- Full Text:
- Date Issued: 2007
An analysis of the influence of question design on learners' approaches to number pattern generalisation tasks:
- Samson, Duncan, Schäfer, Marc
- Authors: Samson, Duncan , Schäfer, Marc
- Date: 2007
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/141026 , vital:37938 , https://0-hdl.handle.net.wam.seals.ac.za/10520/EJC20890
- Description: This paper reports on a study of the extent to which question design affects the solution strategies adopted by children when solving linear number pattern generalisation tasks presented in pictorial and numeric contexts. The research tool comprised a series of 22 pencil-and-paper exercises based on linear generalisation tasks set in both numeric and two-dimensional pictorial contexts. The responses to these linear generalisation questions were classified by means of stage descriptors as well as stage modifiers. The method or strategy adopted was analysed and classified into one of seven categories. In addition, a meta-analysis focused on the formula derived for the nth term in conjunction with its justification. The results of this study strongly support the notion that question design can play a critical role in influencing learners' choice of strategy and level of attainment when solving pattern generalisation tasks. An understanding of the importance of appropriate question design has direct pedagogical application within the context of the mathematics classroom.
- Full Text:
- Date Issued: 2007
- Authors: Samson, Duncan , Schäfer, Marc
- Date: 2007
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/141026 , vital:37938 , https://0-hdl.handle.net.wam.seals.ac.za/10520/EJC20890
- Description: This paper reports on a study of the extent to which question design affects the solution strategies adopted by children when solving linear number pattern generalisation tasks presented in pictorial and numeric contexts. The research tool comprised a series of 22 pencil-and-paper exercises based on linear generalisation tasks set in both numeric and two-dimensional pictorial contexts. The responses to these linear generalisation questions were classified by means of stage descriptors as well as stage modifiers. The method or strategy adopted was analysed and classified into one of seven categories. In addition, a meta-analysis focused on the formula derived for the nth term in conjunction with its justification. The results of this study strongly support the notion that question design can play a critical role in influencing learners' choice of strategy and level of attainment when solving pattern generalisation tasks. An understanding of the importance of appropriate question design has direct pedagogical application within the context of the mathematics classroom.
- Full Text:
- Date Issued: 2007
An inexpensive geometrical micrometer for measuring small, live insects quickly without harming them
- Authors: Villet, Martin H
- Date: 2007
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/441860 , vital:73928 , https://doi.org/10.1111/j.1570-7458.2006.00520.x
- Description: The article discusses the technical note for the journal" Entomologia Experimentalis et Applicata," in the first quarter of 2007 issue. The author provides information about an inexpensive geometrical micrometer for measuring small, live insects rapidly and accurately without causing harm to the organism. The method he applied for making the measurements is related to the wedge micrometer as described by the scientist SD Porter in 1983.
- Full Text:
- Date Issued: 2007
An inexpensive geometrical micrometer for measuring small, live insects quickly without harming them
- Authors: Villet, Martin H
- Date: 2007
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/441860 , vital:73928 , https://doi.org/10.1111/j.1570-7458.2006.00520.x
- Description: The article discusses the technical note for the journal" Entomologia Experimentalis et Applicata," in the first quarter of 2007 issue. The author provides information about an inexpensive geometrical micrometer for measuring small, live insects rapidly and accurately without causing harm to the organism. The method he applied for making the measurements is related to the wedge micrometer as described by the scientist SD Porter in 1983.
- Full Text:
- Date Issued: 2007
An ontology-based, multi-modal platform for the inclusion of marginalized rural communities into the knowledge society
- Thinyane, Mamello, Dalvit, Lorenzo, Slay, Hannah, Mapi, Thandeka, Terzoli, Alfredo
- Authors: Thinyane, Mamello , Dalvit, Lorenzo , Slay, Hannah , Mapi, Thandeka , Terzoli, Alfredo
- Date: 2007
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/431218 , vital:72755 , https://doi.org/10.1145/1292491.1292508
- Description: With the information revolution that promises to shape the 21st century, knowledge has become the prime commodity, very much like land, means of production and capital have been at different times in the past. Access to information, made instantly available by the growth of the Internet, determines access to economic resources, social participa-tion and better quality of life. For this reason, the knowledge stored on the Web and the advantages offered by the spread of Information and Communication Technology (ICT) are equally important for rich socie-ties to prosper and for poor ones to develop. The only difference is that marginalised communities do not have access to the tools and have little control over the content found in the domain of ICTs. In this paper we describe an intervention to develop the potential of a typical rural community in South Africa through ICTs. This involves providing Inter-net connectivity and deploying a platform to support e-commerce, e-learning, e-government and e-health. The core of the platform is an on-tology-based model designed to integrate and respond to Indigenous Knowledge Systems. This has been achieved by combining a deep understanding of local knowledge and social networks with the use of authoring, communication and ontology-management tools. The prima-ry goal of this new approach is to find a way to make ICT solutions more sensitive to the local context, and therefore more effective. Sec-ondly, we hope to foster a sense of ownership of the project among the community, by capitalising on local knowledge and resources.
- Full Text:
- Date Issued: 2007
- Authors: Thinyane, Mamello , Dalvit, Lorenzo , Slay, Hannah , Mapi, Thandeka , Terzoli, Alfredo
- Date: 2007
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/431218 , vital:72755 , https://doi.org/10.1145/1292491.1292508
- Description: With the information revolution that promises to shape the 21st century, knowledge has become the prime commodity, very much like land, means of production and capital have been at different times in the past. Access to information, made instantly available by the growth of the Internet, determines access to economic resources, social participa-tion and better quality of life. For this reason, the knowledge stored on the Web and the advantages offered by the spread of Information and Communication Technology (ICT) are equally important for rich socie-ties to prosper and for poor ones to develop. The only difference is that marginalised communities do not have access to the tools and have little control over the content found in the domain of ICTs. In this paper we describe an intervention to develop the potential of a typical rural community in South Africa through ICTs. This involves providing Inter-net connectivity and deploying a platform to support e-commerce, e-learning, e-government and e-health. The core of the platform is an on-tology-based model designed to integrate and respond to Indigenous Knowledge Systems. This has been achieved by combining a deep understanding of local knowledge and social networks with the use of authoring, communication and ontology-management tools. The prima-ry goal of this new approach is to find a way to make ICT solutions more sensitive to the local context, and therefore more effective. Sec-ondly, we hope to foster a sense of ownership of the project among the community, by capitalising on local knowledge and resources.
- Full Text:
- Date Issued: 2007
An XML-Based Approach to Audio Connection Management
- Foss, Richard, Klinkradt, Bradley
- Authors: Foss, Richard , Klinkradt, Bradley
- Date: 2007
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/427253 , vital:72425 , https://www.aes.org/e-lib/browse.cfm?elib=14115
- Description: An XML-based approach to firewire audio connection management has been developed that allows for the creation of connection management applications using a range of implementation tools. The XML connection management requests flow between a client and server, where the client and server can reside on the same or separate workstations. The server maintains the state of the firewire audio device configuration as well as information about potential users. XML is also used to control user access and booking of devices.
- Full Text:
- Date Issued: 2007
- Authors: Foss, Richard , Klinkradt, Bradley
- Date: 2007
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/427253 , vital:72425 , https://www.aes.org/e-lib/browse.cfm?elib=14115
- Description: An XML-based approach to firewire audio connection management has been developed that allows for the creation of connection management applications using a range of implementation tools. The XML connection management requests flow between a client and server, where the client and server can reside on the same or separate workstations. The server maintains the state of the firewire audio device configuration as well as information about potential users. XML is also used to control user access and booking of devices.
- Full Text:
- Date Issued: 2007
Anaerobic digestion of fungally pre-treated wine distillery wastewater
- Melamane, Xolisa L, Tandlich, Roman, Burgess, Jo E
- Authors: Melamane, Xolisa L , Tandlich, Roman , Burgess, Jo E
- Date: 2007
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/71740 , vital:29932 , https://doi.org/10.5897/AJB2007.000-2305
- Description: The combination of fungal pre-treatment with Trametes pubescens and anaerobic digestion were tested for the removal of chemical oxygen demand (COD) and phenolic compounds from wine distillery wastewater. The COD removal efficiency after fungal pre-treatment reached 53.3%. During digestion, pH buffering was achieved using CaCO3 and K2HPO4. This provided a stable environment inside digester for efficient and time-independent COD removal. The total COD removal efficiency reached 99.5%, and the system proved able to eliminate shock COD loads, as indicated by the concentrations of sludge and volatile fatty acids. Complex changes of phenolic compounds are suspected in anaerobic digestion system, and are investigated further.
- Full Text:
- Date Issued: 2007
- Authors: Melamane, Xolisa L , Tandlich, Roman , Burgess, Jo E
- Date: 2007
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/71740 , vital:29932 , https://doi.org/10.5897/AJB2007.000-2305
- Description: The combination of fungal pre-treatment with Trametes pubescens and anaerobic digestion were tested for the removal of chemical oxygen demand (COD) and phenolic compounds from wine distillery wastewater. The COD removal efficiency after fungal pre-treatment reached 53.3%. During digestion, pH buffering was achieved using CaCO3 and K2HPO4. This provided a stable environment inside digester for efficient and time-independent COD removal. The total COD removal efficiency reached 99.5%, and the system proved able to eliminate shock COD loads, as indicated by the concentrations of sludge and volatile fatty acids. Complex changes of phenolic compounds are suspected in anaerobic digestion system, and are investigated further.
- Full Text:
- Date Issued: 2007
Animated feather coats using field lines
- Authors: Bangay, Shaun D
- Date: 2007
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/433338 , vital:72963 , https://doi.org/10.1145/1294685.1294713
- Description: The tedious task of manually placing feathers on computer animated ob-jects involves aligning feathers, ensuring that they do not insect each other or penetrate the surface, deforming every feather to match the local surface features, and ensuring that the feather coat is consistent when the underly-ing object is animated. We present a technique for generating a feather coat over an object. Feather orientation is specified quickly and easily, feathers are deformed while ensuring collision prevention, and the coat can be ani-mated. We create a vector field in the space surrounding the body object and deform feathers to align with the field lines. The non-intersection proper-ty of the field lines ensures that feather intersections are avoided. We pro-vide a formulation of a suitable vector field and demonstrate that it is capa-ble of producing realistic feather coats. The process can easily be integrated into the work-flow of standard modelling and animation processes. We show examples of feather coat creation on a range of objects, proving that field line based placement of feather coats provides the desired functionality for feather modelling and animation.
- Full Text:
- Date Issued: 2007
- Authors: Bangay, Shaun D
- Date: 2007
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/433338 , vital:72963 , https://doi.org/10.1145/1294685.1294713
- Description: The tedious task of manually placing feathers on computer animated ob-jects involves aligning feathers, ensuring that they do not insect each other or penetrate the surface, deforming every feather to match the local surface features, and ensuring that the feather coat is consistent when the underly-ing object is animated. We present a technique for generating a feather coat over an object. Feather orientation is specified quickly and easily, feathers are deformed while ensuring collision prevention, and the coat can be ani-mated. We create a vector field in the space surrounding the body object and deform feathers to align with the field lines. The non-intersection proper-ty of the field lines ensures that feather intersections are avoided. We pro-vide a formulation of a suitable vector field and demonstrate that it is capa-ble of producing realistic feather coats. The process can easily be integrated into the work-flow of standard modelling and animation processes. We show examples of feather coat creation on a range of objects, proving that field line based placement of feather coats provides the desired functionality for feather modelling and animation.
- Full Text:
- Date Issued: 2007
Antjie Krog and the accumulation of ‘media meta‐capital’:
- Authors: Garman, Anthea
- Date: 2007
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/159713 , vital:40336 , DOI: 10.1080/1013929X.2007.9678272
- Description: While Krog's significant body of work in poetry, prose and journalism is undoubtedly central in her trajectory towards international renown, in this essay I explore the dynamics of her “meteoric rise in status”. The news media's role in mediating Krog to the world for nearly 40 years becomes crucial to this investigation. I use a mix of media theory and field theory to illuminate the multi‐faceted and complex relationship Krog has had with the news media and I argue that her acquisition of ‘media meta‐capital’ has played a significant role in her attainment of a unique voice and speaking platform in a postapartheid, public domain in which few white voices, and especially Afrikaner ones, are being heard.
- Full Text:
- Date Issued: 2007
- Authors: Garman, Anthea
- Date: 2007
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/159713 , vital:40336 , DOI: 10.1080/1013929X.2007.9678272
- Description: While Krog's significant body of work in poetry, prose and journalism is undoubtedly central in her trajectory towards international renown, in this essay I explore the dynamics of her “meteoric rise in status”. The news media's role in mediating Krog to the world for nearly 40 years becomes crucial to this investigation. I use a mix of media theory and field theory to illuminate the multi‐faceted and complex relationship Krog has had with the news media and I argue that her acquisition of ‘media meta‐capital’ has played a significant role in her attainment of a unique voice and speaking platform in a postapartheid, public domain in which few white voices, and especially Afrikaner ones, are being heard.
- Full Text:
- Date Issued: 2007