ABSTRACT The assumed deflection shapes used in the approximate method such as in the Galerkin method were normally formulated by inspection and sometimes by trial and error , until recently, when a systematic method of constructing such a function in the form of Characteristic Orthogonal Polynomials (COPs) was developed in 1985. However, vibrational analysis of plates with different support and boundary conditions are much more complicated. This project used Characteristic Orthogonal Polynomi...
ABSTRACT In the study of the influence of saliency ratio (L/L) on the performance of a synchronous reluctance generator (SRG), this project investigates two typical generator rotor designs: Generator with cage and without cage otherwise known as cage and cageless rotor respectively. A special attention had been paid to the possible rotor geometries of synchronous reluctance machine, SRM. This ratio can directly influence our insight into the machine’s potential abilities. From the studies o...
ABSTRACT This work presented an open loop variable voltage variable frequency (V/F) control of three phase induction motor for an electric vehicle drive. The major advantage of v/f is the ease of implementation. 6 Simulation and practical implementation of the project was carried out using sequential logic circuit for the control of the three phase inverter. Also included in the design is a 120V to 600V boost converter that increases the battery supply voltage to be able to supply the 420V in...
ABSTRACT Over the years, healthcare institutions have relied on one or a combination of medical record number (MRN), demographics and issued documents such as name, sex, date of birth, social security number, and identity cards as patient identifiers. But all those have been proven unsuitable and inefficient as patient identifiers due to one or more of the following drawbacks: non-uniqueness, possessiveness, inability to establish the true identity of a patient, and limitedness of applicabili...
ABSTRACT The objective of this research is to investigate the effect of addition of carbide on sewage degradation. To provide answers to the above objective, some laboratory tests were conducted which include Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total coliform, pH and Suspended Solids (SS) tests. Six experimental set ups of 5liters of sewage were constructed in the laboratory under anaerobic condition. Each of the sewage contained 0g (which served as control), 1g, 2g...
ABSTRACT Asynchronous Transfer Mode (ATM) of transmission is designed as a Broadband Integrated Services Digital Network (B-ISDN) transfer mode that supports a wide range of traffic classes with diverse flow characteristics. ATM guarantees different quality of service (QoS) demands placed on a network by different services (traffic types). The above powerful feats could be well achieved in ATM network with the application of an efficient and effective network resource management system. This ...
ABSTRACT The line of sight communication between an orbiting LEO satellite and its Ground Station is time constrained by duration of visibility and number of visible passes in a day. In Equatorial region like Nigeria, the average duration is short and number of passes is very few. In most cases, the satellite size is small and therefore power generated on-board is also small, consequently the downlink budget is power constrained. Transmission bandwidth is also constrained by Regulations and n...
A variable amplitude and frequency of mechanical vibrating container working on cam and follower mechanism have been established. This study carried out a performance evaluation on the utilization of the established vibrating container for potential application in slowing down sprouting in yam. The vibrating container is electrically operated and a variable speed electric motor of 15, 000 rpm was selected for the machine. The performance parameters of the established mechanical vibrating cont...
ABSTRACT This research work is aimed at using the energy and exergy analysis with thermodynamic data to suggest improvements in the performance of steam and gas turbine power plants. In this regard, specific data from Egbin steam power plant and Geregu I gas turbine power plant were used for the analysis. In the analysis, scientific tools such as Engineering Equation Solver (EES) programme with built-in functions for most thermodynamic and transport properties was used to calculate the enthal...
ABSTRACT Internet is a huge technology that has brought life to computer and its applications. Most forms of information management and data sharing are done using the internet. The World Wide Web has made this possible. With a browser running on your PC, you can get connected to the entire world. The Internet has been used in different aspects of life most especially in the area of education. Web portal is that area in which the huge resources available on the Internet are being tapped. A we...
ABSTRACT An experimental evaluation of the performance of a charcoal stove designed to reduce human labour and health hazards associated with frying in open fire was carried out. The channel- type metallic stove was lagged with 2.54 mm thick glass wool. The charcoal grate is 160 mm from the floor and has 44 holes of 12 mm diameter each to serve as air holes and provide passage for ashes, drilled in it. The charcoal bed is 230 mm from the bottom of the pot and the channel gap is 8mm. A 300 mm ...
TABLE OF CONTENT APPROVAL PAGE.............................................................................................................................................. iii DECLARATION................................................................................................................................................... iv CERTIFICATION............................................................................................................................................... v...
ABSTRACT The study examined the state of health and safety risk management practices in the building sector of the construction industry and has the objectives to: evaluate the construction risks inherent in the building sector of the construction industry; examine the health and safety risk management processes adopted by the construction industry in Nigeria; validate the existence of identified factor(s) militating against the implementation of health and safety practices in the constructio...
ABSTRACT Data warehousing and business intelligence are key enablers in the drive to harness management information and improve decision-making. They underpin the recent wave of interest in data mining and customer relationship management and create opportunities for performance improvements based on quantitative analysis at every level in an organization. Data warehousing is a relatively new field in information technology, and current research centers primarily on data warehousing in busi...
ABSTRACT This work modified an existing lead-acid battery charging system by developing and simulating the conventional lead-acid battery and the fuzzy logic control of the lead-acid battery charging systems. The fuzzy logic system is developed using Mamdani inference system in Matlab toolbox and Simulink, and consequently employed in controlling the 12 conventional charging system adopted. The output voltage of the battery is controlled using matrix laboratory (MATLAB) in creating Fuzzy Infe...