Pope, Jennifer Margaret.
Thesis (Ph.D)--Murdoch University, 2007. / Thesis submitted to the Division of Arts. Includes bibliographical references (p. 343-365, 406-409).
Bain, John Stuart.
Thesis (M.S.)--University of Wisconsin--Madison, 1983. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 175-178).
Londt, Jason G H (Jason Gilbert Hayden), 1943-
1. The external morphology of all stages in the life cycle of B. decoloratus is described with the aid of scanning electron micrographs. 2. The biological activities of B. decoloratus during its parasitic cycle are examined with special reference to the course of feeding of all stages, and to the influence of the pharate nymph and adult conditions in accelerating the completion of the cycle. 3. The pattern of dropping of replete females is considered in relation to their weight and their time of drop-off. 4. The adult male population structure is described. Two distinct weight groups are reported and the taxonomic significance of these is discussed. 5. The preoviposition period duration of B .decoloratus was studied under laboratory conditions and found to be temperature dependent and humidity independent. Female size, as implied by their engorged weights, influenced the duration of the oviposition period: ticks weighing less than 20 mg possessed longer preoviposition periods. 6. The preoviposition period of B.decoloratus females under fluctuating macroclimatic conditions was studied and found to be long in duration. The implications of this are discussed in relation to laboratory findings and the summer build-up of this species in nature. 7. The duration of the oviposition period of B. decoloratus and the number of eggs produced during this period were studied under laboratory and field conditions. Both these parameters were found to be temperature dependent and uninfluenced by humidity. The significance of a temperature dependent oviposition period is discussed. 8. The minimum amount of 'blood' required by female ticks for oviposition of eggs was found to be approximately 16 mg. under laboratory conditions. 9. The oviposition behaviour of B. decoloratus females has been described and the water relations of ovipositing and non-ovipositing females were examined and discussed . 10. The effects of handling female ticks during their oviposition period was studied and females which were handled were found to produce significantly fewer eggs. The significance of this is discussed. 11. During preliminary experiments on the incubation period of B. decoloratus it was found that the viability of eggs laid during the first half of the oviposlting period was greater than for eggs laid in the second half of the period. The critical temperature of the 'wax' coating of eggs was found to be 42⁰C while the critical humidity was approximately 70% R.H. (7,53 mmHg) at 26⁰C. The implications of these findings are discussed. 12. The development of eggs, traced throughout the incubation period by monitoring the build-up of guanine spectrophotometrically, was studied under different humidity conditions . Successful development was found to be dependent on the water content of the eggs at the time of laying. As eggs were also found to be unable to take up water vapour from the atmosphere this finding is important evidence to support the suggestion that the survival of the egg stage largely determines the spacial distribution of larvae in the field. 13. Results of work done at constant, alternating and naturally fluctuating temperatures and humidities demonstrated that the duration of the incubation period of B.decoloratus is temperature dependent and humidity independent. The significance of this is discussed in relation to the findings of previous workers and to the biology of the species. 14. Egg viability (percentage hatch) was found to be humidity dependent and temperature independent. The implications of these findings are discussed. 15. Some of the problems associated with the assessment of the effects of climatic conditions on ticks are discussed. Special reference has been made to the advocation of using saturation deficit instead of relative humidity as the parameter indicative of environmental humidity in any biological study involving fluctuating humidity conditions. 16. The problems associated with having three variables (e.g. temperature, saturation deficit and incubation period duration) are discussed and reasons given for why contour diagrams have been used in this investigation. 17. A model of the interactions between the main abiotic factors of the environment (temperature and humidity) and the biological parameters studied during the second part of this investigation is presented. 18. The effects of climatic conditions on the life cycle and distribution of B.decoloratus are discussed. Special reference has been made to the available evidence explaining the summer build-up in tick numbers known to occur in nature and the way in which the present findings have helped in an understanding of the spacial distribution of B.decoloratus in the field.
Would an asset-based community development approach counteract a community deficit mindset in Leliefontein?Hopkins, Grant Camden January 2011 (has links)
This research report aims to explore the potential of an Asset-Based Community Development (ABCD) approach in Leliefontein. Through the ABCD process, an inventory of the individual capacities of a sample group will be undertaken, as well as an inventory of the significant local associations, organisations and institutions, as well as their capacities. The objective will be to use the asset-mapping process to challenge negative community self-perceptions, enabling them to build new, positive images that empower and release latent potential. The information gathered will also be made available to the individuals, organisations, associations and institutions within the community, along with some ideas on how mutually beneficial partnerships can be developed. The key objective will be to assist the community of Leliefontein, to no longer regard themselves from a deficit mindset, but positively, as a community with tremendous resources, assets and relationships that can be harnessed for 4 community economic development. Asset-mapping can then be used by local organisations to build new relationships within the community, as well as relationships that harness resources outside of the immediate community.
Mobility and Accessibility in Urban Areas : An Assessment of Urban Transport and Social Exclusion among Low-Income Groups in HarareChikengezha, Tadiwa Webster 01 1900 (has links)
This study sought to unravel and explain the transport related challenges faced by low-income residents of Southlea Park in Harare, Zimbabwe, and the resultant social exclusion that these residents were facing. The study was therefore inspired by the common struggles, hurdles and challenges faced by the Southlea Park residents in their commuting life. A single case study research design focusing on the residents of Southlea Park was adopted for the research. The study was, therefore, qualitative. Key informants from the relevant line ministries and transport parastatals, including the Zimbabwe United Passenger Company, the National Railways of Zimbabwe, the Vehicle Inspection Department, and the City of Harare (CoH) were taken as the research participants. From the private sector, key informants from commuter omnibus (kombis) operators, private bus operators and the unregistered taxicab (Mushikashika) were also taken as study participants as these were key players in the provision of transport to residents of Southlea Park. Semi-structured interviews and non-participant observation were the main data collection techniques. This study revealed that the residents of Southlea Park in Harare were being socially excluded and marginalized from economic and social participation due to the numerous transport related challenges they were facing. These challenges emanated from the misuse of land and corruption in the suburb that led to the spaces meant for business activities, schools and hospitals being taken up by houses hence forcing the residents to look for these services elsewhere. The players in the provision of public transport in the city were also significantly contributing to the transport related challenges faced by residents as they themselves were failing to cope with the levels of congestion, transport shortages, lawlessness on the part of the transport providers and the commuters themselves, and the heightened transport related corruption bedeviling the city. This study had a lot of policy implications for the players in the provision of transport to this suburb, including the need for a transport strategy and an overall integrated policy and master plan for further development of Southlea Park and other residential areas in the city’s fringes / Dissertation (MSocSci (Development Studies))--University of Pretoria, 2020. / Anthropology and Archaeology / MSocSci (Development Studies) / Unrestricted
Effects of the Thusong service centres project : an integrated approach in addressing needs of rural communities in the North West Province / K.J TshiteTshite, K J January 2011 (has links)
Aspects such as poverty, unemployment, illiteracy, poor service delivery, are some of the greatest challenges experienced by most of the people of South Africa. The main objective for the establishment of the Thusong Service Centre is for it to serve as a base from which a wide range of information products and relevant services can be made closer and hence more accessible to the poor members of communities. Thusong Service Centre is therefore, amongst others, identified as a platform for the communities in the surrounding areas to interact directly with their national, provincial, or local government leadership. The interaction takes place in the form of the izimbizos (unmediated public meetings), ward community meetings, mass meetings, and so forth . Members of community have got access to services and information at the Thusong Service Centre. They do that, so as to empower themselves with more information on government programmes and projects such as; the local economic development projects. By getting involved in such projects, the community end up as part of small, medium and micro enterprises and other economic development projects that ultimately better their quality of life. / Thesis (M.(Applied Communication) North-West University, Mafikeng Campus, 2011
Hattingh, J., Kokt, D.
Published Article / Sustainability is a global concern for any organisation seeking to remain relevant and in business. In a developing country like South Africa, tourism has the potential to stimulate the economy and create jobs. The Free State and Northern Cape provinces are generally not at the top of the list for national and international tourists, although they are regions of great natural beauty and splendour. These provinces have many small towns and farming communities and thus extensive areas of rural land. This paper interrogates the sustainability issues related to tourism and reflect on the Volksblad Tourism Town of the Year Competition as a means of stimulating sustainable tourism in Free State and Northern Cape provinces.
Maitland, Kathleen M.
No description available.
Duque-AristizaÌbal, Ana Maria
No description available.
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