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Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1993. / Vita. Abstract. Includes bibliographical references (leaves 73-77). Also available via the Internet.

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Thesis (M.Inst.Agrar)(Rural Engineering Technology)--University of Pretoria, 2007. / Includes summary. Includes bibliographical references. Available on the Internet via the World Wide Web.

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A study by the Supreme Planning Council called the attention of problems during the procurement of Senior Staff Housing projects leading to less effective project outcomes. The SPC report put the blame on the current regulations of the scheme. This research evaluated SSH projects in comparison with Private Housing (PH) projects, which were not affected by SSH regulations. A model was developed as part of this research study. The model sets out to embrace the relationships between the variables in the building process. The model takes six main groups of independent variables, namely those that affect the client, the land acquisition, the design phase, the construction phase, disputes and SSH regulations. The effectiveness of the housing projects was measured against quantitative and qualitative performance indicators. The performance variables tested were unit cost; percentage of cost overrun; speed of construction; percentage of time overrun; client's satisfaction with cost and time; client's overall satisfaction; client's rating on quality; aesthetic quality and technical quality. As this study is the first of its kind, exploratory interviews with industry participants were conducted to gain a better understanding of construction practice in Qatar as well as to firm up the design of the client's questionnaire, aesthetic and technical quality evaluation techniques. The main field study resulted in 61 SSH projects and 34 PH projects. The research revealed that PH projects are more effective than SSH projects. It was found that SSH regulations are not the main reason for a less effective outcome. The main reasons were the unclear objectives and bad decisions made by the SSH clients. The research also revealed poor quality workmanship, old construction techniques and the use of inadequate construction materials. Also, a lack of, proper contract forms and means of dispute resolution. There are no institutions for consultants or contractors and a lack of training and development. Together, these factors contribute to the client's poor image of the industry. The research provides recommendations for reorganising the industry to improve its output. These include establishing Construction Industry Council, forming institutions for consultants and contractors, and establishing Housing Council.

Made available in DSpace on 2012-05-07T14:40:37Z (GMT). No. of bitstreams: 2 license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) 000009.pdf: 10930205 bytes, checksum: 4adfda0171bec85ac94d9251a429a8eb (MD5) Previous issue date: 2007 / A exacerbação da atividade pestosa no início dos anos 1960 e o desconhecimento de aspectos da epidemiologia levaram o Governo Brasileiro, através do Departamento Nacional de Endemias Rurais (DNERu), a convidar Marcel Baltazard, do Instituto Pasteur de Paris, para elaborar um projeto de pesquisa visando a elucidação da conservação, focalização, epizootização e epidemização da peste no Brasil, com vistas à implementação de atividades eficazes de controle. O projeto, denominado Plano Piloto de Peste em Exu, foi executado na Chapada do Araripe-PE de 1966 a 1974. Apesar de toda a sorte de óbices, dificultando o desempenho da equipe, composta basicamente por dois técnicos brasileiros, auxiliares semi-analfabetos e consultores dos Institutos Pasteur de Teerã e de Paris, foi desenvolvido um amplo programa de pesquisas elucidando a maioria das questões propostas. A compilação das atividades jamais foi publicada, mas registros isolados permitem listar os principais resultados obtidos: a) a comprovação da infecção natural de roedores silvestres e de outros pequenos mamíferos e suas pulgas; b) o papel do Bolomys lasiurus (Zygodontomys lasiurus pixuna) na epizootização; c) a capacidade vetora da Polygenis bolhsi jordani e o seu papel na transmissão da infecção ao homem, com um desempenho superior aos de Xenopsylla cheopis e Pulex irritans; d) a participação da P. irritans na epidemização; e) a sensibilidade dos sigmodontinos e equimídeos e a relativa resistência do Ratus rattus; f) a resistência dos cavídeos, decorrente da sua asparaginasemia; g) a resistência da X. cheopis e P. irritans aos inseticidas organoclorados; h) o descarte das pestes endógena e crônica como mecanismos responsáveis pela conservação; i) a redução dos prazos para confirmação diagnóstica; j) o isolamento de 719 cepas, que deram origem à maior coleção brasileira de culturas de Yersinia pestis; k) a definição de um programa de controle baseado na vigilância contínua e sistemática, privilegiando a participação comunitária e contemplando a pesquisa da Y. pestis nos roedores e suas pulgas e pesquisa de anticorpos contra o antígeno F1 em animais-sentinela, o que ensejou a estruturação de uma rede nacional de laboratórios, bem como a intervenção imediata nas ocorrências, com diagnóstico precoce, pronto tratamento, quimioprofilaxia e despulização

M.Ing. (Engineering Management) / The triple constraint considerations in construction projects determine failure or success of projects. The key reasons of a winning project comprise of identification, monitoring, control and management of projects risks. Projects, over the years, failed to be completed within the contracted triple constraints. The persistent failure of construction projects in South Africa contributes to lack of development in skills and infrastructure. It is hypothesized that a deeper comprehension of the triple constraint and strategic management may supplement success of construction projects. It is difficult to complete projects within the stipulated triple constraint elements due to the high degree of unforeseen circumstances. Although the success of construction projects is confined to the triple constraint, the projects successes can also be influenced by other external factors and intra-management of the triple constraint including trade-offs. The ever escalating societal demand makes it a necessity to keep up through intensive investigation into construction projects. Communication breakdown is one of the sources of errors and is therefore essential for practicality of the survey in the investigation. A questionnaire was chosen for the survey. The collected data was organised into qualifications and experience and was presented in a tabular and graphical formats. Due to the anticipated reluctance to participation, a larger number of people were engaged. Contrary to the contextual information, the fieldwork survey indicates that projects are successful relative to the triple constraint elements. The success or failure of projects is largely founded on the triple constraint elements except for contractors who in addition to the triple constraint cite other factors. The scarcity of engineering and construction skills in South African government is hurting success of construction projects and therefore infrastructure and skills development and sustainability. In conclusion, both the contextual and fieldwork survey attribute failure of construction projects to lack of understanding and poor management of the triple constraint elements and trade-offs. These conclusions are however limited to failure to survey all project management data, sample size, ability to address questions and honesty of participants. A further study into a bigger sample of this specific study is proposed.