Abstract Detailed characterization of relevant cell components modelling and model validation of the electrical power utilization and productivity estimation of a locally fabricated
ABSTRACT Ductile iron (DI) thin section profiles (≤ 3mm) known as Thin Wall Ductile Iron (TWDI) offer significant potentials in automotive applications because of their high strength with good ductility, wear resistance, castability, machinability and good fatigue properties. “Globally” as-cast TWDIs in many foundries suffer macrostructural and microsructural defects such as solidification shrinkages, coldshuts, misrun, incomplete filling, carbide precipitation, poor graphite morpholog...
This thesis proposes a Restricted Radix-7 Symmetrical Quaternary Signed Digit Number system (RR7SQSDNS) both as an alternative processing logic threshold system and as a signed digit algebraic structure. The thesis also presents the arithmetic operations on elliptic curves defined over this special type of finite field and develops Restricted Radix-7 Symmetrical Quaternary Signed Digit (RR7SQSD) modular exponentiation scheme that uses a multiply-by-7 addition/subtraction chain to compute the ...
ABSTRACT The geometric design of highways requires a large number of iterations and repetitive tasks of analysis and drafting in order to prepare plan, profile and cost estimate.
ABSTRACT The existing Ongwediva Waste Stabilization Ponds have had several problems in their operations over the past years. Thus, the treatment performance of the waste stabilization ponds was assessed in terms of the reduction efficiency of some physical, chemical and biological pollutants of importance. Data were collected daily from May to June 2017 and analyzed for both raw and treated wastewater. Results of these investigation showed that the average effluent concentrations of BOD, DO, ...
ABSTRACT This paper presents the operation of centrifugal pumps as turbines for micro hydropower application. Block diagrams are used to present components required from intake chamber to hydropower plant and their electrical energy mechanism for micro hydropower system. A comparison of operational parameters of pump as turbine and conventional turbines is discussed. Also, the paper discusses three types of methods for selecting the centrifugal pump as turbine based on the head, flow rate, r...
ABSTRACT Photogrammetric Refraction is one of the major causes of systematic errors affecting the accuracy of maps compiled from aerial images. It has to be eliminated so as to attain the goal of the best results that the technology of photogrammetric mapping is capable of. Many researchers have devoted substantial efforts to develop a number of analytical formulas to remove the effect of refraction. However, these formulas suffer from certain limitations, such as: (i) inconsistent values fo...
INTRODUCTION The power sector in Nigeria is in a deplorable state due to many factors.
ABSTRACT The geometrical design of highways requires a large number of iterations and repetitive tasks of analysis and drafting
Abstract The capability of fuzzy sets to express gradual transition from membership to non-membership and vice versa has broad utility. The overlap between two or more adjoining fuzzy sets create very important fuzzy “patch” that deserves special attention. In the existing literature, Zadeh, Mamdani and TagakiSugeno have established that the Min- and Max- operators can effectively be used for fuzzy interpolative inference. But what has not been done is to define an explicit expression for...
ABSTRACT The inhibition of corrosion of mild steel by Azadirachta indica leaf extract in acidic environments of HCl and HNO3 from pH1 to pH6 has been investigated using the weight loss technique. The Azadirachta indica leaf extract is the inhibitor and the mild steel used was in the form of coupons. The investigations were carried out at ambient temperature. The optimum concentration of the extract used for the experimentation was obtained by soaking 200g of ground fresh Azadirachta...
ABSTRACT The goal of this project was to design a data logging interface using wireless network principle in order to facilitate the process of monitoring physical parameters such as temperature, pressure, humidity, e.tc in the environment. There is a growing desire to find an efficient and cost effective means to monitor these physical parameters, especially at home and industries. The absence of a means to monitor these quantities in an environment has led to so many inadequacies. Th...
ABSTRACT The word “vote” means to choose from a list, to elect or to determine. The main goal of voting (in a scenario involving the students of a given tertiary institution), is to come up with student-leaders of the students’ choice.Most tertiary institutions, FUTO not an exception have problems when it comes to voting. Some of the problems involved include rigging votes during election, insecure or inaccessible polling arena, inexperienced personnel and so on because voting i...
ABSTRACT Railway transport in Namibia is one of the most important mode of transport with great importance to the economy of the country. Currently, road networks are the most important because of the low population density of the nation. However, railway lines have been reported to be the most economical, efficient, environmentally friendly, and the safe solution for long distance transportation of heavy goods [1]. The Namibian Railway Network lines linking to the coastal towns and ports, i....
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...