This work explores the use of hydroinformatics tools to provide a user friendly and accessible interface for executing and visualizing the output of distributed hydrological models for Iowa. It uses an IFIS-based web environment for graphical displays and it communicates with the ASYNCH ODE solver to provide input parameters and to gather modeling outputs. The distributed hydrologic models used here are based on the segmentation of the terrain into hillslope-link hydrologic units, for which water flow processes are represented by sets of nonlinear ordinary differential equations. This modeling strategy has shown promising results in in modeling extreme flood events in the state of Iowa – USA. The usage and evaluation of outputs from hillslope-link models (HLM) has been limited to a restrict group of academics due to the demand of high processing capability and the number of customized tools needed to visualize model outputs. HLM-based models provide abundant output information on rainfall-runoff processes of the hydrological cycle, including estimates of discharge for all streams in the state of Iowa, and for all conceptual vertical layers of water storage in soils. The interfaces and methodologies developed in this thesis respond to the constant demand for communicating effectively water-related information from academic communities to the public using hydroinformatics tools to provide an accessible portal to the information generated by complex hydrological models. It also facilitates model development and evaluation by allowing rapid development of what-if scenarios. This work represents a significant advance in this direction, and the results have been made publicly available online under the URL http://ifis.iowafloodcenter.org/ifis/sc/modelplus/.

This study focuses on the debtor-creditor relationship between African states and the International Financial Institutions (IFIs). More specifically, it makes use of ‘post-positivist’ approaches as analytical tools and it compares the controversial Structural Adjustment Programmes (SAPs) with so-called ‘post-SAPs’ in order to establish whether the latter debt relief strategies are an improvement on the former. Post-SAPs include, amongst others, the Enhanced Heavily Indebted Poor Countries Initiative (HIPC II) and Poverty Reduction Strategy Papers (PRSPs). Jointly, the post-SAPs initiatives aim to make debt more sustainable, boost social spending and reduce poverty. The PRSP initiative in particular was full of promise (at least initially), as it entailed that debtors would rightfully be given the scope to create their own developmental strategies and that a blanket approach to development would be abandoned. Upon closer inspection the PRSP initiative is disappointing. The process itself is predetermined and there are additional IFI mechanisms (with traditional SAPs conditionalities) that should be read alongside this initiative. As the Great Recession starting in 2007 unfolded, the IFIs tended to stress the success and ‘resilience’ of HIPC II and PRSP countries. However, this study argues that supposed achievements are somewhat artificial and one needs to remain cautious about its long-term impacts. African economies experienced high economic growth rates in recent years, not because of World Bank and IMF endorsed policies, but because of debt relief and a commodity boom in the 2000s. The IFIs have not done anything to forge the developmental state in Africa. Several HIPC II and PRSP graduates are already starting to show signs of debt distress. Thus, there is a need to seriously rethink the roles of the World Bank and IMF in Africa. This study recommends that true adherence to the PRSP approach could be a first step to empower African states, and it calls for the establishment of an independent mechanism that will hold debtors and the IFIs accountable for unsustainable debt. / Dissertation (MA)--University of Pretoria, 2011. / Political Sciences / unrestricted