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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
61

The evolution of Batesian mimicry in the butterfly Papilio dardanus

Thompson, Martin John January 2015 (has links)
No description available.
62

Skills development, the enabling environment and informal micro-enterprise in Ghana

Palmer, Robert January 2007 (has links)
Unemployment and underemployment, particularly among the youth, are serious concerns to governments across Sub-Saharan Africa (SSA). Fifteen years on from the World Conference on Education For All (EFA) in Jomtien, EFA policies have started to result in some of the largest cohorts of primary school leavers ever witnessed in many parts of SSA. This is occurring at a time when SSA’s formal sector is unable to generate sufficient formal employment and income opportunities. The great majority of all school leavers, therefore, are obliged to enter the informal, micro-enterprise economy, urban and rural, and receive informal training in traditional apprenticeships and/or through other on-the-job means. However the links between education, training and enterprise are still poorly understood. This study presents an investigation into how young people construct and are able to navigate these pathways to informal self-employment in rural Ghana by acquiring skills and schooling from multiple sources, and through seeking assistance from informal networks. It makes a contribution not only to understanding the transition from training to self-employment, but also to the nature of the rural informal sector in Ghana. This study examines three types of skills training provision; on-the-job apprenticeship training, short-term modular training and longer-term pre-employment training, examining both the delivery context of these different training modalities, as well as the graduates’ labour market outcomes. The analysis is based on 12 months fieldwork in rural Ghana in 2004 and 2005 during which time multiple approaches were used to uncover these skill-to-work pathways; tracer studies with 162 vocational training graduates, semi-structured interviews with 160 apprentices and a household survey capturing data on 147 youth. Furthermore, retrospective interviews with 114 enterprise owners were conducted to better understand pathways to informal self-employment and the multiple occupational realities, or occupational pluralism, of many of those in this rural African economy. This data suggests that the school-skill-enterprise relationship is highly dependent on the delivery context of training as well as the type of enabling or disabling environments within which the training is translated into employment outcomes. This study also includes an analysis of the long history of Ghana’s skills development policies and practice - up to 2006. This is integrated with a discussion on the wider environment within which skills are delivered, particularly the labour market, and how this impacts on the employment opportunities of technical and vocational education and training graduates in Ghana.
63

Validation of Atmospheric Infrared Sounder (AIRS) Data Using GPS Dropsondes

Hildebrand, Edward 01 January 2010 (has links)
The vertical structures of tropospheric temperature and moisture over the oceans have not been well observed to date. The Atmospheric Infrared Sounder (AIRS) aboard NASA?s Aqua satellite offers the opportunity to provide observed soundings of these variables. This thesis focuses on the validation and application of AIRS soundings in the tropical troposphere over the Atlantic Ocean, with emphasis on the Saharan Air Layer (SAL). SAL outbreaks occur every few days, producing a warm air mass that is particularly dry at the middle levels. These westward-propagating plumes inhibit convection and are thereby thought to possess a detrimental effect on African easterly waves and tropical cyclones (TCs). First, AIRS soundings are compared with concurrent Global Positioning System (GPS) dropwindsonde data released from NOAA?s Gulfstream-IV jet aircraft, for three TC cases. In SAL environments, temperature soundings from both instruments are usually consistent. Additionally, AIRS is able to capture the very dry air in the middle levels, but it generally underestimates the moisture in the boundary layer and often misses the sharp vertical moisture gradient at the SAL base (~850 hPa). In the moist tropical boundary layer, AIRS also exhibits a dry bias. Cloud cover also prevents AIRS from accurately sampling the low-level moisture. Next, total precipitable water is derived from AIRS soundings and averaged over daily, monthly and seasonal timescales. The significant monthly and interannual variability of the moisture distribution is found to be consistent with expectations. A peak in the probability density function of mixing ratio corresponding to dry air is observed in the lower-mid troposphere in early summer, consistent with the increased frequency of SAL outbreaks during this period. Finally, the relationship between dry air derived from AIRS and TC intensity is explored. As the amount of dry air increases, particularly in the southeast and northeast quadrants of the TC, the TC becomes more likely to weaken. In the presence of high wind shear or low sea surface temperature, the likelihood of weakening increases further. While these results highlight some shortcomings of the AIRS data, their importance and uniqueness are emphasized via new applications of AIRS soundings over data sparse regions.
64

Fertility trends in sub Saharan Africa

Ekane, Duone Unknown Date (has links)
Fertility rates in sub Saharan Africa (SSA) have been identified to be depicted by a  unique demographic scenario, that sets  the region  apart from other regions in the world. Demographers are particularly keen on comprehending the dynamics surrounding the demographic transition of the sub continent especially with respect to its shift from high fertility rates to low fertility rates.  The decline in fertility embodies the second phase of the demographic transition process. The discourse on fertility rates in the sub continent has been coined to be an anomaly based on its prevalence being an exception in the world. Discussion pertaining to fertility levels in the region in this paper was made  with the purpose of illuminating the factors that account for the region’s high fertility rates, as well as on  fertility discourse in the region, and the variation that characterize its prevalence amongst the countries in the sub continent. Information on the fertility rates revealed that social organization and cultural setting in the region play pivotal roles in forging high fertility rates in the region.
65

Intellectual Property Rights in Sub-Saharan Africa

Adegoke, Sope 01 January 2011 (has links)
Globalization of the world economy has made knowledge a critical element of effectiveness in the world economy. Current economic and trade conditions change rapidly and require constant improvement to ensure economic development. These conditions stimulate innovation and improvements in technology, designs, and other tangible and intangible assets. Most Sub-Saharan African countries have not exploited the benefits that intellectual property rights offer to its users, despite considerable improvements to existing knowledge and options for protecting knowledge. Strong intellectual property laws are important for effective incentives to invent continuously. It is important to provide some form of compensation and guarantee that their innovation is credited to them. This is achieved through the establishment of intellectual property rights. Intellectual property rights have far-reaching effects on several sectors of the economy, such as trade, manufacturing, and other industries. Intellectual property rights policies are therefore, important for economic development.
66

The question of national identity in Equatorial Guinea

Cusack, Igor Brian January 1999 (has links)
The newly independent states of Africa came into being at a time when the ideology of nationalism was universally dominant. The ruling elites, presiding over long-term economic and political decay and searching for legitimacy to preserve their power, set about nation-building through the development of various discourses, the indoctrination of schoolchildren, anthems and flag waving. The focus of this thesis is on a number of these discourses particular to Equatorial Guinea, the only Spanish-speaking state in sub-Saharan Africa. Four main themes are identified: firstly, the Hispanic inheritance has been important in the building of a national cultural identity; secondly, the likelihood of the various ethnic groups 'bonding in adversity', as a result of living through the tyranny of Macias Nguema, is explored as are the more recent commemorations of his overthrow; thirdly, those 'on the move' such as the large Equatoguinean diaspora and other travelling groups in the colony and independent state are shown to assist the national project and fourthly, a 'myth' of Bantu unity has been proposed which claims that all the ethnic groups of the state have a common origin. A national identity is being assembled, like a collage or assemblage, out of diverse materials. Finally, it is argued that the appearance of banal, everyday nationalism in written texts in Equatorial Guinea indicates that a sense of national identity may have emerged. Although the small size of the country may have assisted here this does indicate that it is possible for the state in Africa to construct a nation starting from a multi-ethnic base. There are considerable disintegrative forces working on the sub-Saharan states but the evidence presented here suggests a more optimistic outlook for the survival of these states in the next century.
67

HIV-related risk-taking behaviors and preventative measures in sub-Saharan Africa

Zellner, Sara Lyn 23 June 2011 (has links)
Not available / text
68

European colonialism in sub-Saharan Africa : the Germans, French, and British in Cameroon, 1884-1939

Maderspacher, Alois January 2011 (has links)
No description available.
69

Poverty, resource endowment and conflicts in Sub-Saharan Africa a reexamination of the resource curse hypothesis

Nsaikila, Melaine Nyuyfoni 07 May 2015 (has links)
<p> Contrary to the logical conclusion that the more natural resources a country has or controls, the more prosperous, rich and happy will be its people, the evidence from many Sub-Saharan countries is pointing to a different direction with numerous conflicts occurring mostly near mineral deposits or in countries heavily endowed with natural resources of various sorts. This paper seeks to tackle the basic questions of a sub-Saharan African and any person interested in the region; why are there so many conflicts in the region? Why is there absolute poverty despite the presence of enormous natural resources? What are the factors contributing to the present problems facing the region? This paper establishes the relationship between poverty, resource endowments and conflicts in sub-Saharan Africa. The paper reviews literature, stressing on the different conditions under which resource abundance can and have been a primary cause of conflicts. It argues that poverty and conflicts have re-enforced each other and that natural resources have played a role. The paper also makes use of conflict, resource and poverty data among other variables to establish the probable cause for the numerous conflicts in Sub-Saharan Africa. The paper suggests statistically that Political Stability and Absence of violent conflicts can only be altered by the lack of sustainable economic opportunity, failure to control corruption and rising levels of poverty. It is worth noting that the resource variables are not statistically significant. This however, do not dismiss the role of natural resources in the present conflicts of the region because the trend is observable that most conflict ridden countries in the Sub-Saharan African region are resource rich. It rather lays an emphasis on the fact that resource revenues could be used to avert the current situation by provision of basic needs like shelter, potable water, security, accountable institutions, education and the promotion of enterprise that will be a guarantor of sustainable economic opportunities. The paper employs Maslow's Human needs theory for some explanations and also multiple regression, using panel data for statistical analysis. Fixed and random effects estimation techniques are used, and other statistical testing to determine the validity of the different variable coefficients generated. The paper suggests concrete economic and policy recommendations to the problems enumerated that could leapfrog the region out of the current bad situation it has been in for decades.</p>
70

Women living in Kibera, Kenya: stories of being HIV+. / Women living in Kibera, Kenya: stories of being HIV positive.

VanTyler, Samaya 26 April 2012 (has links)
There is an abundance of biomedical and social science research relating to HIV/AIDS which has focused on understanding the disease from a medical crisis. The research has attended to matters of prevention and clinical treatment. This study is a naturalistic study which explores the socio-economic and political-cultural aspects of the disease in and on the lives of nine women living in one of the world’s mega slums, Kibera in Kenya. The study is based on the assumption that the HIV/AIDS pandemic has brought about social disruption and profound changes to the micro contexts of community and family life. Cultural norms, practices and values that historically sustained the fabric of African life are slowly being stripped away as those infected with HIV and their families cope with the impact of the chronic illness. Living as HIV+ women is yet one more challenge that these women face every day. They struggle to provide self-care and a healthy life for those they are responsible for within an environment that lacks so many social determinants of health. Using a methodological convergence of narrative, feminist and Indigenous methodologies within a post-colonial paradigm, I have explored how nine HIV+ African women story/experience their daily lives and participate in community activities. Consideration of the reality of the day to day experiences of HIV+ women living in an African slum settlement may offer insights for government, policy makers, and community-based and non-government organizations to better support and promote quality of life for those living with HIV/AIDS. / Graduate

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