The paper studied the processes represented by a system of equations particular product parabolic type. For solution mutual diffusion problems, evaluations were obtained according to environmental parameters and dimensions space. Computational schemes, algorithms, software packages in programming environments developed, solutions visualized solve problems.

Lack of sanitation facilities is a common occurrence in informal settlements that are common in most developing countries. One challenge with sanitation provision in these settlements is the cost and financing of sanitation. This study aimed at estimating the cost of sanitation, and investigating the social and economic dynamics within Kisumu's informal settlements that hinder provision and upt...

Internationally, settlement informality (informal housing and informal settlements) is increasing, not decreasing. Thus, according to United Nations estimates, there are currently 924 million people living in various forms of slums and unauthorized or informal settlements (UN Habitat, 2003, p2). In Sub-Saharan Africa 71,9% of urban dwellers lived in slums (ibid). In South Africa, official gover...

Geothermics has an increasing importance to energy supplies worldwide. Thus, there is also an increasing need to numerically model different geothermal scenarios. Depending on the type of problem, it may be necessary to take density coupled processes into account. Further, the thermal dependence of material properties should be considered. Special problems occur in the case of fractured flow, w...

Acknowledgments I am deeply grateful for the patience and understanding of my advisor, Dr. Greg Rodin and I appreciate his friendship. His generous support was essential for completing my studies and his guidance was essential for completing this dissertation. Many thanks to my advisor, Dr. Robert van de Geijn for his encouragement throughout my studies. He has enthusiasm in abundance and he is...

A numerical code has been developed to model the complex behavior of woven fabric panels subjected to ballistic impact. The code has the ability to model multiple-layer fabric panels, multiple projectile geometries, and fabric imperfections such as yarn slippage at crossovers and also at clamps. A discussion of the numerical methodology is presented, along with the results of numerical simulati...