Thesis (M.A.)--West Virginia University, 2006. / Title from document title page. Document formatted into pages; contains vi, 35 p. : ill. (some col.), map. Includes abstract. Includes bibliographical references (p. 31-33).

Thesis (Ph. D.)--University of Texas at Austin, 2002. / Vita. Includes bibliographical references. Available also from UMI Company.

Background: Influenza viruses cause substantial mortality and morbidity both worldwide and in Hong Kong. Furthermore, the possible emergence of future influenza pandemics remains a major threat to public health. Some studies have estimated that one third of all influenza transmission occurs in households. Household studies have been an important means of studying influenza transmissions and evaluating the efficacy of influenza control measures including vaccination, antiviral therapy and prophylaxis and non-pharmaceutical interventions. Household studies of influenza can be categorized as pertaining to one of two designs: household cohort and case-ascertained. In household cohort studies households are recruited before the start of an influenza season and then monitored during the influenza season for influenza infection. In case-ascertained studies a household is enrolled once influenza infection is identified in a household member. Objectives: This thesis comprises of two parts. The objective of the first part is to evaluate the resource efficiency of different designs for conducting household studies. The objective of the second part is to estimate community and household transmission parameters during the 2009 A(H1N1) pandemic in Hong Kong. Methods: Monte Carlo simulation parameterized with data from influenza studies in Hong Kong was used to compare the resource efficiency of competing study designs evaluating the efficacy of an influenza control intervention. Approaches to ascertaining infections in different types of studies, and their implications for resource efficiency were compared. With regard to the second part, extended Longini-Koopman models within a Bayesian framework were used on data from a Hong Kong household cohort study conducted from December 2008 to October 2009. Household and community transmission parameters were estimated by age-groups for two seasonal influenza strains circulating in the winter of 2008-09 and two seasonal and one pandemic strain circulating in the summer of 2009. Results: Simulations showed that RT-PCR outperformed both serology and self-report of symptoms as a resource efficient means of identifying influenza in household studies. Identification of influenza using self-report of symptomatology performed particularly poorly in terms of resource efficiency due to its low sensitivity and specificity when compared to laboratory methods. Case-ascertained studies appeared more resource efficient than cohort studies but the results were sensitive to the choice of parameter values particularly the serial interval of influenza. In statistical analyses of household data during the winter of 2008-09, it was found that transmissibility of seasonal influenza strains were similar to those previously reported in the literature. Analysis also showed for the summer 2009 the estimates of household transmissibility were similar for seasonal A(H3N2) and pandemic A(H1N1) especially after taking into account that some individuals were likely immune to infection. Conclusions: Careful consideration of study design can ensure that studies are resource efficient and have sufficient statistical power. Data from a household study suggested that during 2009 seasonal and pandemic influenza had similar transmission patterns. / published_or_final_version / Community Medicine / Doctoral / Doctor of Philosophy

Thesis (Ph.D.)--University of Wollongong,2005. / Typescript. Bibliographical references: leaf 283-294.

South Africa is acknowledged as having the highest Gini coefficient in the world. The Gini coefficient is a measure of income inequality in a country. The eradication of all forms of inequality was probably the most important aspiration for people pre-democracy. After two decades of democracy, not only has the eradication of inequality not materialised, but inequality has worsened. The aim of the research is threefold. Firstly, to understand the origins and the ensuing reasons for inequality as it is experienced in South Africa in 2013 and secondly, to investigate what the effects of this inequality are on the lives of South Africans, socially, politically and economically. Lastly, the research aims to find what, if anything, South Africans can do to address the issue, in order to determine if the aspiration is indeed attainable. Qualitative exploratory research was conducted by interviewing 16 prominent South Africans with the requisite knowledge of the topic and experience in their respective fields. Semi-structured, in-depth face-to-face interviews were performed. Content and theme analysis were carried out on the transcripts, followed by the recording of the responses in logically ordered tables. The literature informed the interpretation of the results in the tables. The reasons for and causes of South Africa’s high Gini coefficient were identified, with the apartheid legacy and the present government’s governance style as the two greatest contributors. The effects of the high inequality in the South African context were considered far more detrimental to society, than to the politics and the economy of the country. The research yielded a number of actions that could be considered to reduce inequality, thereby improving the Gini coefficient. The two most important proposals were addressing the current poor education system and finding a solution for unemployment. / Dissertation (MBA)--Gordon Institute of Business Science, 2013 / mn2014 / Gordon Institute of Business Science (GIBS) / MBA / Unrestricted

When only whole years of age are recorded in survey data, children who experienced a birthday since the beginning of the school year may appear to be of school-age when they are not, or vice-versa. This creates an error in estimates of school participation indicators based on such data. This issue is well-known in education statistics, and several procedures attempting to correct for this error have been proposed. The present study critiques current practice and demonstrates that its limitations continue to confound educational research and high-stakes policy conclusions: speculative explanations have been proposed for what is actually a measurement artefact. An alternative adjustment strategy is proposed that coherently exploits all available information and explicitly indicates the remaining uncertainty. The application of the method is illustrated by a number of empirical case studies using recent household survey data. These examples demonstrate that the method is feasible, accurate, and that taking survey timing into account can significantly alter how these data are interpreted.

Thesis (Ph. D.)--Ohio State University, 2004. / Title from first page of PDF file. Document formatted into pages; contains xiii, 148 p.; also includes graphics Includes bibliographical references (p. 142-148). Available online via OhioLINK's ETD Center

South Africa is acknowledged as having the highest Gini coefficient in the world. The Gini coefficient is a measure of income inequality in a country. The eradication of all forms of inequality was probably the most important aspiration for people pre-democracy. After two decades of democracy, not only has the eradication of inequality not materialised, but inequality has worsened. The aim of the research is threefold. Firstly, to understand the origins and the ensuing reasons for inequality as it is experienced in South Africa in 2013 and secondly, to investigate what the effects of this inequality are on the lives of South Africans, socially, politically and economically. Lastly, the research aims to find what, if anything, South Africans can do to address the issue, in order to determine if the aspiration is indeed attainable. Qualitative exploratory research was conducted by interviewing 16 prominent South Africans with the requisite knowledge of the topic and experience in their respective fields. Semi-structured, in-depth face-to-face interviews were performed. Content and theme analysis were carried out on the transcripts, followed by the recording of the responses in logically ordered tables. The literature informed the interpretation of the results in the tables. The reasons for and causes of South Africa’s high Gini coefficient were identified, with the apartheid legacy and the present government’s governance style as the two greatest contributors. The effects of the high inequality in the South African context were considered far more detrimental to society, than to the politics and the economy of the country. The research yielded a number of actions that could be considered to reduce inequality, thereby improving the Gini coefficient. The two most important proposals were addressing the current poor education system and finding a solution for unemployment. / Dissertation (MBA)--University of Pretoria, 2013. / pagibs2014 / Gordon Institute of Business Science (GIBS) / MBA / Unrestricted

Strategies of rural development in China experienced sharp changes in the policies for rural economic reform which began in the late 1970s. Contrary to the previous model of a "pure" socialist way of development, which argued for a single developmental path, the reform policies encouraged diversification. Peasant adaptation to the new situation is examined through the co-existence of three kinds of households, namely subsistence cropping households, cash cropping households and partial agricultural households. The thesis attempts to determine the characteristics associated with the different kinds of households by analyzing survey data collected from five townships in the Pearl River Delta of south China. It also attempts to bring out some theoretical implications of the Chinese experiences of rural development in the past forty years. / Arts, Faculty of / Anthropology, Department of / Graduate

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