The Mackenzie Delta region of the Northwest Territories, Canada, has experienced rapid climate warming in the past century resulting in rapidly thawing permafrost in this region. This thesis examines spatial and temporal changes to sediment organic carbon and mercury flux in lakes from thermokarst regions by comparing sediment cores from lakes with and without retrogressive thaw slumps on their shorelines. We show that sediments from lakes with permafrost thaw slump development on their shorelines (slump lakes) had higher sedimentation rates as well as lower total Hg, methyl mercury (MeHg), and labile OC fractions when compared to lakes where thaw slumps were absent. Total Hg and MeHg concentrations in sediments were correlated with total organic carbon (TOC), S2 (labile algal-derived OC), and inferred chlorophyll a content, indicating an association between autochthonous organic carbon and Hg in these sediments. Correlations between mercury and S2 in these study lakes generally support the hypothesis that algal-derived materials correlate with Hg concentration in sediments. We observed higher S2 concentrations in reference lakes than in slump lakes, likely due to uninterrupted algal production, lower dilution by flux of inorganic matter, and possibly better anoxic preservation in reference lakes compared to slump lakes. It is evident that thaw slump development in this thermokarst region increases inorganic sedimentation in lakes, while decreasing concentrations of organic carbon and associated Hg and MeHg in sediments.

The Mackenzie Delta region of the Northwest Territories, Canada, has experienced rapid climate warming in the past century resulting in rapidly thawing permafrost in this region. This thesis examines spatial and temporal changes to sediment organic carbon and mercury flux in lakes from thermokarst regions by comparing sediment cores from lakes with and without retrogressive thaw slumps on their shorelines. We show that sediments from lakes with permafrost thaw slump development on their shorelines (slump lakes) had higher sedimentation rates as well as lower total Hg, methyl mercury (MeHg), and labile OC fractions when compared to lakes where thaw slumps were absent. Total Hg and MeHg concentrations in sediments were correlated with total organic carbon (TOC), S2 (labile algal-derived OC), and inferred chlorophyll a content, indicating an association between autochthonous organic carbon and Hg in these sediments. Correlations between mercury and S2 in these study lakes generally support the hypothesis that algal-derived materials correlate with Hg concentration in sediments. We observed higher S2 concentrations in reference lakes than in slump lakes, likely due to uninterrupted algal production, lower dilution by flux of inorganic matter, and possibly better anoxic preservation in reference lakes compared to slump lakes. It is evident that thaw slump development in this thermokarst region increases inorganic sedimentation in lakes, while decreasing concentrations of organic carbon and associated Hg and MeHg in sediments.

This is a collection of four papers about the All-Affected Principle (AAP): the view that every person whose morally weighty interests are affected by a democratic decision has the right to participate in that decision. The first paper ('Narrow Possibilism about Democratic Enfranchisement') examines how we should distribute democratic participation rights: a plausible version of AAP must avoid treating unlike cases alike, which would be procedurally unfair. The solution is to distribute participation rights proportionately to the risk that a person's interests will be affected. AAP thus implies an account of political equality that requires adherence to the 'one person-one vote' model only if interests are indeed equally affected. The second paper ('Economic Participation Rights and the AAP') argues that AAP supporters have paid insufficient attention to economic participation rights. The exercise of such rights raises unique worries about democratic accountability, which is why their exercise is constrained by a number of duties. The third paper ('What AAP Is, and How (Not) to Fight It') explores how AAP fares in light of possible objections from desirability and feasibility. Unlike crude versions of AAP, a plausibly restricted version of AAP cannot be dismissed as easily as many AAP sceptics may have thought. My reflections here are useful for AAP supporters and sceptics alike: this paper helps clarify what kind of objection can cast serious doubt on AAP. The fourth paper ('Criminal Disenfranchisement, Political Wrongdoing, and Affected Interests') asks: is AAP compatible with criminal disenfranchisement? AAP, when endorsed in combination with a plausible theory of punishment, is compatible with disenfranchising a narrow set of criminal wrongdoers only: those guilty of 'political wrongdoing', which is wrong primarily because it undermines democratic procedures and institutions for private gain. The upshot is that current blanket policies of criminal disenfranchisement are incompatible with AAP.

Resilient Educators Support Programme (REds) for HIV and AIDS affected educators was initiated by the University of North West in 2006 following a research project in 2005 that highlighted the need for a support programme that addresses the challenges of educators affected by HIV and AIDS, as existing support structures were found to be inadequate. REds is implemented in phases, and with each phase it is modified to meet the needs of a broader audience of educators. The first phase was implemented in the Gauteng Province in 2006. Recommendations made from this phase were used to modify it for phase two, that is, implementation in Mpumalanga Province and two additional provinces. The goal of the research project was to evaluate the effectiveness of the Resilient Educators Support Programme (REds) in empowering and supporting HIV and AIDS affected educators in Mpumalanga. Programme evaluation research was adopted, using the dominant-less dominant model of combining both quantitative and qualitative research approaches, with the quantitative approach being the dominant approach. The research design for the quantitative research approach was the quasi-experimental one group pre-test post-test design whilst the collective case study design was used for the qualitative research approach. Quantitative data was collected through a group administered standardized questionnaire, the Professional Quality of Life Scale (ProQOL) and for qualitative data, a non-standardized questionnaire with drawings, semi-structured interviews, observation and field notes were used. Data was collected before and after the respondents were exposed to REds. The respondents, ten educators from Sozama High School in Middelburg, were recruited using non-probability volunteer sampling method. Additional qualitative data was collected from the five members of school management team using semi-structured interviews, after the respondents were exposed to REds. Although the quantitative empirical research findings showed no significant differences between the pre- and post-test data, it seems from the qualitative approach as if the respondents found the programme addressing their support needs as HIV and AIDS affected educators and they felt empowered with knowledge and skills that they lacked and thus making them resilient. Conclusions drawn from the qualitative research findings indicated that REds Support Programme was effective in meeting the support needs of HIV and AIDS affected educators in Mpumalanga. From a quantitative perspective, it is recommended that the reason/s for the non-significant test results from the standardized questionnaire be investigated. Copyright / Dissertation (MSW)--University of Pretoria, 2008. / Social Work and Criminology / unrestricted

No description available.

The main focus of this study was on making recommendations towards the refinement of REds that should increase its effectiveness in supporting educators affected by the HIV and AIDS pandemic towards coping resiliently with the challenges of the pandemic. The educators are affected by_ learners, colleagues, family members who are HIV positive or dying from AIDS-related illnesses, or teaching orphans and vulnerable learners made by HIV/AIDS pandemic. To achieve this aim, I followed a pm-experimental pre-test-post-test design. Within this design, I used qualitative methods of data collection, to comment on how successful REds was in encouraging participant resilience and to comment on how REds could be refined. Ten affected educators volunteered to take part in this study, being three males and seven females. Their ages ranged from 35-56 and they were all primary school educators. All the participants came from one school in the Eastern Free State province (Thabo Mofutsanyana district). REds was implemented in Thabo Mofutsanyana district because this is where I live and work and the school is accessible to me. The participants were all esothospeaking and adhered to Sesotho culture. They all taught AIDS orphans and vulnerable children. My findings from this study documented that participants seem to have benefitted from their participation in REds. In general the participants reported more resilient management of the challenges brought in by the HIV/AIDS disaster and although this cannot be finally linked to their participation in REds, participants in general they made such a link. REds need to be refined witl1 regard to content, language and activities that will do more to encourage assertiveness. / M.Ed., North-West University, Vaal Triangle Campus, 2010

Public participation is an integral part of the environmental impact assessment (EIA) process, as it provides opportunities for interested and affected parties (I&APs) to participate in the decision making process. The objective of public participation is to accomplish social and environmental justice and to promote informed decision making. Concern however exists that public participation is seen and implemented as a rigid “one size fits all” process and that the inputs by I&APs are limited to the pre-authorisation phases i.e. the I&APs are not involved in the environmental management of the full life cycle of the activity. The problem appears to stem from the fact that the implementation of the public participation process is associated with a number of shortcomings and may be seen as a paper exercise to satisfy the requirements of the National Environmental Management Act. The aim of the research is to determine the effectiveness of public participation in EIA processes, using a group of selected South African case studies. A structured, survey-based research study was conducted with I&APs, environmental assessment practitioners (EAPs) and officials from relevant decision making bodies (competent authorities). The main aim of the research has been achieved and all research objectives answered. The study concludes that public participation in EIA processes is not purely a paper exercise, but does in fact enhance decision making. However, there are widespread concerns regarding the selection of alternatives and the alignment of public participation processes in other environmental assessments. / M (Environmental Management), North-West University, Potchefstroom Campus, 2015

Public participation is an integral part of the environmental impact assessment (EIA) process, as it provides opportunities for interested and affected parties (I&APs) to participate in the decision making process. The objective of public participation is to accomplish social and environmental justice and to promote informed decision making. Concern however exists that public participation is seen and implemented as a rigid “one size fits all” process and that the inputs by I&APs are limited to the pre-authorisation phases i.e. the I&APs are not involved in the environmental management of the full life cycle of the activity. The problem appears to stem from the fact that the implementation of the public participation process is associated with a number of shortcomings and may be seen as a paper exercise to satisfy the requirements of the National Environmental Management Act. The aim of the research is to determine the effectiveness of public participation in EIA processes, using a group of selected South African case studies. A structured, survey-based research study was conducted with I&APs, environmental assessment practitioners (EAPs) and officials from relevant decision making bodies (competent authorities). The main aim of the research has been achieved and all research objectives answered. The study concludes that public participation in EIA processes is not purely a paper exercise, but does in fact enhance decision making. However, there are widespread concerns regarding the selection of alternatives and the alignment of public participation processes in other environmental assessments. / M (Environmental Management), North-West University, Potchefstroom Campus, 2015

The main focus of this study was on making recommendations towards the refinement of REds that should increase its effectiveness in supporting educators affected by the HIV and AIDS pandemic towards coping resiliently with the challenges of the pandemic. The educators are affected by_ learners, colleagues, family members who are HIV positive or dying from AIDS-related illnesses, or teaching orphans and vulnerable learners made by HIV/AIDS pandemic. To achieve this aim, I followed a pm-experimental pre-test-post-test design. Within this design, I used qualitative methods of data collection, to comment on how successful REds was in encouraging participant resilience and to comment on how REds could be refined. Ten affected educators volunteered to take part in this study, being three males and seven females. Their ages ranged from 35-56 and they were all primary school educators. All the participants came from one school in the Eastern Free State province (Thabo Mofutsanyana district). REds was implemented in Thabo Mofutsanyana district because this is where I live and work and the school is accessible to me. The participants were all esothospeaking and adhered to Sesotho culture. They all taught AIDS orphans and vulnerable children. My findings from this study documented that participants seem to have benefitted from their participation in REds. In general the participants reported more resilient management of the challenges brought in by the HIV/AIDS disaster and although this cannot be finally linked to their participation in REds, participants in general they made such a link. REds need to be refined witl1 regard to content, language and activities that will do more to encourage assertiveness. / M.Ed., North-West University, Vaal Triangle Campus, 2010

Doctor of Philosophy / Department of Geography / John A. Harrington Jr / The Senegal River valley and delta (SRVD) are affected by long term climate variability. Indicators of these climatic shifts include a rainfall deficit, warmer temperatures, sea level rise, floods, and drought. These shifts have led to environmental degradation, water deficits, and profound effects on human life and activities in the area. Geographic Information Science (GIScience), including satellite-based remote sensing methods offer several advantages over conventional ground-based methods used to map and monitor salt-affected soil (SAS) features. This study was designed to assess the accuracy of information on soil salinization extracted from Landsat satellite imagery. Would available imagery and GIScience data analysis enable an ability to discriminate natural soil salinization from soil sodication and provide an ability to characterize the SAS trend and pattern over 30 years? A set of Landsat MSS (June 1973 and September 1979), Landsat TM (November 1987, April 1994 and November 1999) and ETM+ (May 2001 and March 2003) images have been used to map and monitor salt impacted soil distribution. Supervised classification, unsupervised classification and post-classification change detection methods were used. Supervised classifications of May 2001 and March 2003 images were made in conjunction field data characterizing soil surface chemical characteristics that included exchange sodium percentage (ESP), cation exchange capacity (CEC) and the electrical conductivity (EC). With this supervised information extraction method, the distribution of three different types of SAS (saline, saline-sodic, and sodic) was mapped with an accuracy of 91.07% for 2001 image and 73.21% for 2003 image. Change detection results confirmed a decreasing trend in non-saline and saline soil and an increase in saline-sodic and sodic soil. All seven Landsat images were subjected to the unsupervised classification method which resulted in maps that separate SAS according to their degree of salinity. The spatial distribution of sodic and saline-sodic soils has a strong relationship with the area of irrigated rice crop management. This study documented that human-induced salinization is progressively replacing natural salinization in the SRVD. These pedologic parameters obtained using GIScience remote sensing techniques can be used as a scientific tool for sustainable management and to assist with the implementation of environmental policy.