The introduction of curriculum changes in mathematics has brought about challenges for both mathematics teachers and learners in South African schools. Apart from introducing new curriculum content to learners, teachers cope with factors which impact upon their collective efficacy (the sum total of the self-perceptions of all the teachers in a particular school regarding the conduciveness of effective teaching, learning and assessment processes) and on the teacher self-efficacy of mathematics teachers (the personal self-perceptions of mathematics teachers to execute their mandates effectively in the teaching, learning and assessment of mathematics ) which consequently lead to mathematics learners developing better concepts in mathematics. This study focuses on the impact of collective efficacy on the implementation of the New Curriculum Statement (NCS) for mathematics teachers, teaching in schools situated in previously disadvantaged communities. It is within the context of the constraints that these schools face, not only the socio-economic barriers, but also the willingness of all the teachers to develop a culture of teaching and learning, and the consequent impact it has on the effective teaching, learning and assessment of mathematics in the classrooms of these schools, that the effect of efficacious/non-efficacious teachers in these schools is investigated. A mixed method approach by using quantitative data (generated from questionnaires) and qualitative data (generated from interviews) probe the primary research question, which aims to investigate the effect of collective efficacy on the introduction of a new curriculum by mathematics teachers. The sub-questions probe the specific efficacy relations relating to the primary research question in terms of the perceptions and perspectives of all the teachers about their respective sample schools, how these perceptions and perspectives influence mathematics teachers in the manner they perceive their control over the teaching, learning and assessment processes in the mathematics classroom, and the consequent impact it has on mathematics learners developing better concepts and ultimately achieving better academic results in mathematics.

The process of extradition is a vital component of International Criminal Law as a means of ensuring the suppression and prevention of international crimes. It is the internationally accepted method used by states to surrender an offender back to the state where the alleged offence was committed so that such offender can be tried and punished. Without such process, and with the ease of modern global travel, offenders would, in all likelihood be able to escape prosecution and punishment. Most organized democratic societies recognize that the suppression of crime is necessary for peace and order in society and that extradition is an effective tool to be used to bring to justice a fugitive attempting to evade the law by fleeing to another country. What follows is a discussion, firstly on the theory of extradition and secondly on the effect that human rights has had on the law of extradition. The theory of extradition involves an analysis of extradition from its ancient roots to its position in society today. With regard to extradition in South Africa, reference is made to the various periods of the country’s history. The colonial era before South Africa acquired Republican status in 1961 is referred to in order to establish a basis for the present law of extradition in South Africa. The period during the apartheid era after achieving Republican status in 1961 is discussed in order to show how and why South Africa moved away from its common law roots based on English Law. This era is also of importance as it led to the introduction of the present Extradition Act 67 of 1962. Finally the current position spanning from 1994 to the law as it stands in South Africa today, as influenced by the introduction of Constitutional law, is examined. The rule on non-inquiry is also examined in order to compare the traditional approach by states, where state sovereignty was of paramount importance, with the modern trend of emphasis being placed on fundamental human rights. The methods in terms of which extradition is accomplished, both in South Africa and internationally is also discussed. Such reference to the theory and nature of extradition is done to provide general background on the complex issue to be discussed. The crux of the treatise relates to the impact that the rise in status of fundamental human rights has had on the extradition process. Reference will be made to aspects relating to the protection of the offender’s procedural rights as well as to the protection of the individuals right to life, dignity and bodily integrity. Such examination will refer to the position in South African law as well as the position on the international front. Attention is given to developments in case law as well as to how the courts approach the tension between extradition and human rights both locally and internationally. Finally, in conclusion it is submitted that the extradition process is the most effective procedure available to return an offender to the state seeking his prosecution. The process has however, in modern times adapted to uphold the rights of the offender whose return is requested. This can be seen from the provisions included in recent treaties and conventions, most notably the European Convention on Extradition to which South Africa became a party in 2003. Extradition is clearly concerned with the balancing of the offender’s human rights and the need for effective enforcement of criminal law.

The uniqueness of the wildlife and the luxurious nature of South African private game reserves could be seen as a valuable niche in the South African tourism market and for this reason make South Africa a desired destination. Due to complex visitor needs and demands regarding price, service, social connection, authenticity, quality or image, value perceptions will differ in terms of visitors’ experiences. If managers do not understand these value requirements, differences might exist between consumers’ and service providers’ perceptions of value. To maintain visitor satisfaction, loyalty and intention for return to the reserves, managers should continue to provide valued offerings and improve their visitors’ wildlife experience. This research investigated visitors’ perceptions of the value delivered by private game reserves in South Africa and compared these with reserve managers’ perceptions of the value delivered. The results of this research study could contribute to a better understanding of perceived value, which in turn could enhance the success of the private game reserves. The literature contextualised the South African private game reserve as part of wildlife tourism, the wildlife tourism offering and the characteristics of wildlife visitors. An overview of customer value, customer value models showing their development over time, and the conceptual framework of the current study was provided. The resulting conceptual model was used to evaluate managers’ and visitors’ perceptions of Quality, Monetary price, Behavioural price, Reputation, Emotional response, Social value and Novelty value delivered by South African private game reserves. The empirical data was collected by means of a survey, using two structured self-administered electronic questionnaires administered to the managers of, and the visitors to, private game reserves. One hundred and sixty two visitors and 30 managers participated in the survey. By performing exploratory factor analysis it was found that the seven value factors were consistent with the value dimensions reported in the literature. These were labelled as Quality, Emotional response, Monetary price, Reputation, Novelty value, Social value and Behavioural price. Most of managers’ perceptions of value provided exceeded visitors’ perceptions of value received. Both managers and visitors rated value items related to Emotional response highly. Considerably more managers (17 percent) thought that the reserve experience can be associated with good service, opposed to only 4 percent of visitors who perceived the service to be good. On the other hand, a larger proportion of visitors (29%) than the managers (20 percent) perceived the reserve experience as relaxing. Managers rated eleven of the thirteen game reserve attributes more positively than what the visitors did. Of these attributes, accommodation services, protection of the natural environment, game drives and service delivery, showed significant differences. It is recommended that South African private game reserve managers: • conduct market research to get a better understanding of what delights visitors. Research should be conducted on a regular basis to ensure management stays current with visitors’ changing needs; • determine whether the prices charged reflect the quality of the physical offerings, service delivery and the time and effort visitors spent to obtain the offering; • use the adventurous activities offered at the reserves as part of their promotional campaigns to attract adventure tourists; • train service delivery staff and game drive guides to educate visitors on the history, culture and eco-friendly practices related to their reserve; • always deliver superior service to ensure memorable wildlife experiences, value for money and exceed visitors’ expectations; • continue using websites, social media and magazines to inform the target market about the reserve offerings; and • stay in regular contact with visitors through social media, newsletters, blogs, follow up emails/calls or face to face discussions at the reserve.

South Africa has always been cited as an example of protracted social conflict by the analytical conflict resolution school. Given that appellation, the conflict, in terms of the understanding of that school of thought, would not have been amenable to resolution, and yet many observers hail the South African democratic transition as a miracle of transformation. This thesis, using a detailed application of the various elements of protracted or deep-rooted social conflict, demonstrates that South Africa is indeed an example of protracted social conflict. Given the application of pre-negotiation initiatives, and the establishment of a unique National Peace Accord, negotiations were enabled, and successfully delivered a democratic election, and so far, also a sustainable democracy. The establishment of the Truth and Reconciliation Commission was the result of a realization on the part of a wide spectrum of South African leadership and conflict resolution professionals, that negotiation alone would not provide conflict resolution for South Africans, and that there was therefore an additional need to deal with the deeper issues of conflict, if the settlement were to prove sustainable. The question remains whether ours represents a successful resolution of the conflict from the theoretical perspective of the analytical conflict resolution school. A close examination of South African socio-political issues across a number of domains regarded by the analytical conflict resolution school as important, indicates that while the requirements for conflict resolution were indeed met in the South African case, their more advanced stage of resolution; conflict provention has not been satisfied. That explains the fact that many tensions, much violence and intolerance remain. South Africa’s democracy has not been infused with analytical conflict management institutions, basic human needs have not been substantially met and valued relationships remain elusive. Because protracted social conflict is cyclical, we can expect high-levels of conflict behaviour to haunt, and even threaten our fledgling democracy. It is argued here that a coherent theoretical approach to the South African conflict management process would have produced a more sustainable outcome, and we recommend the continued use and institutionalization of analytical conflict provention processes to secure the future of our country.

Employees who plan for retirement can contribute meaningfully towards building a sustained quality of life during retirement. The lack of pre-retirement planning and education, however, “weakens” an individual’s life satisfaction. The aim of this study was to explore and describe the impact retirement planning and education has on retiree’s UFE satisfaction and to determine overall individual quality of life. This research firstly discusses retirement, or the prospect of giving up work. The research study points to the fact that an overwhelming amount of research shows that retirement, as a social phenomenon cannot be understood except in the context of work, because the meaning of retirement is largely an outgrowth of the meaning of work. The study further suggests that the transition from work to retirement can be eased through planning. Beginning to plan for retirement several years before retirement is anticipated is helpful. The study points to quality of life as a multi-dimensional concept that refers to an individual’s overall life satisfaction and total well-being. The findings discussed in Chapter Five indicate a reasonable level of retirement planning and education amongst retiree’s who participated in the survey. Recommendations from the study indicated a need for individual counseling during retirement planning and education workshops.

It is important to the survival of the Africa Penguin (Spheniscus demersus) population that breeding at the nest site is successful and that large numbers of chicks are fledged into the breeding population. Nest distribution on Bird Island is not random and locality preferences for breeding exist. Although it seems that sufficient area exists on Bird Island for penguin nests, it can hardly be considered as suitable to optimise breeding. During prolonged heat conditions, breeders relocated to nest sites that were sheltered. Nests that were below ground in burrows was the only habitat that did not suffer nest desertion whilst all the other habitat types (including those that were sheltered) experienced 2-3 fold declines in nest numbers. Nests density and the selection of suitable nest sites are significantly influenced by the stage of breeding that the majority of birds are in, yet nests that are shaded, well-ventilated and protected seem to be the most preferred sites for breeding. Adults that attempt to breed are considered then to be in a healthy condition and will usually lay a double clutch (Randell 1983). The frequency of double clutches being laid during the peak breeding attempt was significantly higher compared to the replacement one. Breeding failure was fairly similar to breeding success during the incubation stage for nests with double clutches however, was substantially higher in single clutches. The growth rate of chicks was best fit to the von Bertalanffy growth curve in 90 percent of the cases. The overall growth rate of chicks from double broods was faster than from single broods, however was not significant. A-chicks maitain a high growth rate until they fledged. Yet, the sibling B-chick recorded the lowest growth rate of the successfully fledged chicks and up to until day 30 recorded a similar weight to those chicks that failed to fledge. Contrary to findings of Randall (1983), chicks from single broods delayed fledging, recorded lowest overall growth rates and experienced the greatest weight loss of all groups, yet fledged successfully. In order for chicks to fledge successfully, they needed to obtain a weight of 1060 g before day 30.5 in their growth cycles to avoid death due to startvation later on. Single chicks that are raised from a double cluth, fledged more other than chicks raised from a single clutch. Unfit or ill-adapted breeders that are marginal in the capabilities of raising offspring, already manifest in a small clutch size and offspring unable to obtain adequate weights during the initial stages of growth.

The ecologist Garrett Hardin (1968) introduced a useful concept called the tragedy of the commons, which describes how ecological resources become threatened or lost. The term “commons” is based on the commons of old English villages and is symbolic of a resource that is shared by a group of people. If every person were to use each resource in a sustainable fashion it would be available in perpetuity. However, if people use more than their share they would only increase their personal wealth to the detriment of others. In addition, an increase in the population would mean that the size of each share would have to decrease to accommodate the larger number of people. As a result, resources are threatened by personal greed and uncontrolled population growth. Freshwater is an example of a common resource that is under threat in South Africa where the average annual rainfall is less than 60 percent of the global average (Mukheibir & Sparks 2006). The increasing demands for freshwater as well as its eutrophication are major concerns with regards to estuarine health, environmental resource management and human health. The correct management of water is necessary to ensure that it is utilised in a sustainable manner. The National Water Act (No. 36 of 1998) has provided the rights to water for basic human needs and for sustainable ecological function; the Basic Human Needs Reserve and Ecological Reserve are both provided as a right in law. The amount of water necessary for an estuary to retain an acceptable ecological status, known as the Estuarine Ecological Reserve, is determined through the implementation of procedures (rapid, intermediate or comprehensive) compiled by the Department of Water Affairs and Forestry (1999) in its Resource Directed Measures (RDM) for the Protection of Water Resources. The impact of restricted flow on estuaries can be reduced by manipulating the water released from impoundments, the regulation of water abstractions within the river catchment or both (Hirji et al. 2002). The reserve assessment method is designed to evaluate ecosystem requirements by employing groups of specialists from different disciplines. In South Africa, this includes hydrologists, sedimentologists, water chemists and biologists (including microalgae specialists). The use of microalgae in ecological assessments has largely been based on research that was initiated at the Nelson Mandela Metropolitan University (formerly University of Port Elizabeth) and subsequently at Rhodes University (Grahamstown) and the University of KwaZulu Natal (Durban). The microalgal research can be divided into two main focus areas; phytoplankton and benthic microalgae

Among the world‘s ecosystems, estuaries have the highest total economic value per hectare. They are dynamic coastal biomes that provide a host of different goods and services to the surrounding terrestrial and aquatic environments and the people who utilise them. These goods and services include, inter alia, nursery areas for marine organisms, harvested natural resources (such as fish, shell-fish, bait organisms, reeds and mangroves), flood attenuation, water purification, nutrient and sediment sinks, waste disposal, transport, aesthetic beauty and areas for swimming, boating and fishing. Assessing the condition of estuaries is difficult as their state can change depending on what is being measured. Assessments have been carried out on the health of estuaries in South Africa with the results of these studies being used as inputs to the process of assessing the minimum water supply requirements for each estuary (ecological reserve) in order to maintain or improve its functionality. These ecological reserve requirements are assigned using Resource Directed Measures (RDM). These measures, however, have been criticised for being highly complex and too costly to implement for all South African estuaries within a reasonable time period. Another concern is that the levels of demand for recreational goods and services provided by the estuary are not taken into account when assessing estuarine value. It is important to understand that the use of estuaries for recreational purposes is inextricably linked to their health and sound ecological functioning. Although South African estuaries have been quite well buffered from impacts until only very recently, their use and pressures have escalated faster than what conservation authorities and policy makers have been prepared for over the last couple of decades. There is thus mounting pressure on estuaries as recreational outlets, which, in turn, has led to their functional deterioration as well as deterioration in the quality of the recreational experience as a whole. One implication for management is that more and more trade-offs have to be made in an attempt to balance the conservation and recreational use of estuaries.

An estuary can be defined as a partially enclosed, coastal body of water which is either permanently or periodically open to the sea and within which there is a measurable variation of salinity due to the mixture of sea water with fresh water derived from land drainage. Estuaries are extremely important environmental assets and the management of them is dependent on the active involvement of the people whose livelihoods depend on them. There have been steady decreases in freshwater inflows into them during the past century due to abstraction of river water for human consumption and alien tree and plant infestations. Due to these decreases in freshwater inflows, many estuaries have become smaller and are providing reduced recreational services to users, such as boaters, fishermen and birders. This reduction in recreational service provision has adverse economic consequences. The scale of these consequences have become of great interest to river catchment planners. Of particular interest is the value of the freshwater inflows into estuaries relative to other abstractions of this water. The value referred to here is in terms of the environmental services yielded to recreational users. From a management perspective, it is desirable that these marginal values be compared with marginal cost values of this water in its best alternative use in order to guide the allocation of inflows into the respective estuaries. The aim of this study is to place a monetary value on this freshwater inflow at the Kowie, Kromme and Nahoon estuaries. Due to the fact that the freshwater flowing into estuaries is not a traded good, an alternative method to market price must be used to value it. The method of valuation used in this study is the contingent valuation method. The contingent valuation method (CVM) is a survey technique which asks individuals to place values upon changes to environmental assets. The questionnaires used in the surveys differed slightly. The one administered at the Nahoon Estuary was revised in the light of experience gained at the administration of the ones at the Kowie and the Kromme estuaries. Some questions in the latter two surveys were found to be confusing to the respondents and were made clearer and some of the questions were found to yield little extra information and were scrapped from the Nahoon Estuary survey.

Ph.D. / Relationships within the Crotalarieae are explored using DNA sequences (ITS and rbcL) and morphological data and the monophyly of the various genera is assessed. A literature review of chemical characters (mainly alkaloids) was needed in order to evaluate the congruence between molecular, morphological and chemical data and how these patterns should be interpreted within the context of new generic and suprageneric concepts. The DNA study was also aimed at confirming the suspected polyphyly of Lebeckia and Lotononis (as currently circumscribed) and at improving generic circumscriptions. The aim was to propose and formalize new generic concepts for Lebeckia s.l. and Lotononis s.l. in order to ensure that all of the resultant genera are monophyletic.