xv ABSTRACT Climate change is affecting global weather patterns, more so by exacerbating the sporadic nature of Namibia’s rainfall patterns. This has negative consequences on urbanization as increased rainfall in certain rainy seasons coupled with increased urban development could lead to dangerous flooding in low-lying areas, as was the case with Acacia residential, Windhoek, in 2004. Increased urban development has the potential to increase runoff and flood peaks by 20% to 50% of those un...
TABLE OF CONTENTS 1. Introduction 4 2. Literature Review 17 3. Corporate Governance Framework 43 4. Research Design and Methodology 109 5. Research Findings and Discussions of the Study 116 6. Hypotheses Result, Conclusions and Recommendations 137 References
ABSTRACT There has been growing global concern over dwindling fossil fuel supply. This development has led to increased interest in exploration of alternative energy sources, especially bio-fuel. Sweet sorghum (Sorghum bicolor), sugar cane (Saccharum officinarum), corn (Zea mays), wheat (Triticum aestivum), rape seed (Brassica napus), barley (Hordeum vulgare), sugar beet (Beta vulgaris), cassava (Manihot esculenta), oil palm (Elaies guineensis), sweet potato (Ipomoea batatas) and many more ha...
ABSTRACT This dissertation examined and presented adaptive water governance analysis and tools for the Upper Swakop Basin (USB) in Namibia where integrated river basin management is still in its infancy. The water governance concerns in the basin include pollution monitoring and control challenges that are further threatening the security and adequacy of the developed drinking water sources. By applying and triangulating different methods (models, statistical analysis, quantitative and qualit...
Abstract: The introduction of Non-Transmittable Codewords (NTCs) into Viterbi Algorithm Decoder has emerged as one of the best ways of improving performance of the Viterbi Algorithm Decoder. However, the performance has been tested only in hard decision Viterbi Decoder in telecommunication systems, but not in soft decision Viterbi Decoder and storage media. Most storage media use Reed Solomon (RS) Algorithm Decoder. Yet, the field experience still shows failure of the algorithm in correcting ...
ABSTRACT The objectives of this study were to determine: (1) the chemical composition of untreated Senegalia mellifera and Catophractes alexandrii; (2) the effect of NaOH and urea treatment at different levels (0%, 4%, 6% and 8%) on chemical composition of S. mellifera milled samples; (3) the nutrient composition of formulated diets from chemically and fibrolytic enzyme treated S. mellifera samples; (4) palatability of the feeds developed from S. mellifera, when fed to weaned Damara sheep. Sa...
Abstract: Each hydropower plant is usually designed for specific amount of discharge and gross head. This paper presents the methods used to measure the discharge and gross head variables with additional of assessment tools. Discharge measurement methods covered include bucket, float, velocity-area, dilution, hydraulic structure and advanced discharge measurement while gross head measurement methods covered include topographic and DEM maps, hose level with pressure gauge, sight level, spirit ...
ABSTRACT The purpose of this study was to assess Rural-ICT Service Providers (RISP) and agropastoralists interface. Specifically, the study aimed to get a better understanding of structures and processes at the interface and their implications for sustainable agropastoral livelihoods. The study was undertaken in Morogoro and Mwanza Regions where two districts with RISP were purposively chosen. The study adopted a combination of cross-sectional and case study designs. Purposive and random samp...
ABSTRACT GNU Radio is a software development toolkit that has traditionally been used by a community of specialized coders and advanced engineers for rapid prototyping and analysis of the physical layer. However, recently its potential as an educational tool is being debated and calls have been made to expand its applicability into this area. In this dissertation, the researcher responds by documenting how GNU Radio platform can be used to design a number of new practical demonstrations which...
ABSTRACT The factors that affect the colour yield of an acid dye on nylon fabric were investigated at a constant temperature of 500C, usingC.I. Acid Yellow 23,with citric acid and sodium chloride as auxiliaries. It was observed from the absorbance results that the colour yield of C.I. Acid Yellow 23 improved with increase in time of dyeing, while the absence or increase beyond 1% (acid) and 5% (salt) reduced the colour yield of the acid dye on the nylon fabric. Also, at a constant dyeing ti...
ABSTRACT Experimental investigation of anaerobic digestion of the organic fraction of municipal solid waste (MSW) in an upflow bioreactor with central substrate dispenser (UBCSD) is presented. The UBCSD consists of two similar size bioreactors joined by a central substrate dispenser (CSD). The UBCSD is a component of an integrated system of bioreactors also containing the upflow anaerobic sludge blanket (UASB) reactor and the continuous stirred tank reactor (CSTR), assembled systematical...
ABSTRACT Road transport takes about 70% of the transportation systems in Tanzania. With the increasing number of vehicles and urbanization, the number of road accidents has been rising now and then leading to an increase in the number of casualties and deaths. Efforts must be made to make sure that the number of road accidents is reduced. Wireless technologies have come as a solution to such road safety and transport efficiency issues. Recently, the promise of wireless technologies to suppor...
ABSTRACT The Energy - Exergy based performance analysis of the Solid Adsorption Solar Refrigerator is presented. The system comprises the collector/generator/adsorber, the condenser and the evaporator. It utilizes activated carbon/methanol as its adsorbent/adsorbate working combination. The exergy performance analysis of this refrigerator involves detailed assessment of all the following sub-processes that make up the refrigeration cycle, which are isosteric heat-up phase, desorption phas...
Abstract Exposure to CO (carbon monoxide) during cooking in households using LPG (liquefied petroleum gas), natural gas and charcoal as fuels has been conducted. The study aimed at assessing the indoor air quality in order to address potential hazards associated with CO. Carbon monoxide concentrations and flame temperature were measured at an interval of 1 min for 1 h using CO and thermometer data loggers respectively. While the CO concentration from LPG and natural gas were found below 26 p...
ABSTRACT The telecommunications industry in Africa has exhibited tremendous development since the turn of the century. This study analyzes production efficiency changes in the African telecommunications industry in the period 2000 to 2009. Furthermore, an attempt is made to assess the determinants for such efficiency changes. The results show that the industry has improved its productivity levels. However, most of the productivity growth is resulted from technological advancement and less fr...