ABSTRACT A framework for condition monitoring approach that uses the sense of smell was investigated to diagnose the faults of plug-not-firing, loss of compression and carburetor faults from the exhaust fumes of gasoline fuelled automobile engine. An electronic nose based condition monitoring hardware and software was developed using the framework to obtain smell prints that correspond to normal operating conditions and various induced abnormal operating conditions. Fuzzy C-means and K means ...
Traditional networking architectures have many significant limitations that must be overcome to meet modern IT requirements. To overcome these limitations; Software Defined Networking (SDN) is taking place as the new networking approach. One of the major issues of traditional networks is that they use static switches that cause poor utilization of the network resources. Another issue is the packet loss and delay in case of switch breakdown. This research proposes an implementation of a ...
ABSTRACT Usage of ergonomically unsuitable classroom chairs and desks promotes bad posture while bad postures affect students’ learning, performance and health. Attention is rarely paid to ergonomic fitness of classroom chair and desk used by primary school pupils in Nigeria up till now. This study investigated classroom furniture status in the Staff School, University of Ibadan, Oyo State, Nigeria and developed an automated procedure for designing ergonomically suitable chair cum desk mode...
Abstract Simulation of reliable solutions of nonlinear engineering problems by means of stable numerical algorithms is a frequent and acceptable practice. This study focuses the development and investigation of Range-Kutta coefficients dependent stability polynomial for the second, third and fourth orders Runge-Kutta schemes. The development utilized matrix inversion operation procedure that involves determinant and cofactors computation of relevant matrix. The validation was made referencin...
Abstract With Mobile IPv6 (MIPv6) protocol support, mobile hosts can move from their home networks or one network to another without interrupting ongoing session. In MIPv6 network, packets from CN to MN undergo rectangular routing owing to long delay and tunneling overhead that affect the performance of mobile network. Furthermore, during handover process packet loss due to MN mobility is high which eventually hinder the performance of real application such as video conference, VoIP. Route o...
ABSTRACT Reliance on mobile connectivity has led to demands for wireless spectrum capacity to grow on a daily basis resulting to congested networks. Ensuring acceptable levels of Quality of Service (QoS) for users in wireless communication systems, through continuous wireless network analysis using simulation tools based on radio propagation models has become increasingly prominent. To provide automated analytical model building, the use of machine learning methods has been considered to pre...
Abstract Biomass waste to energy conversion systems were traditionally installed on rural farms to manage manure disposal and mitigate odour. These systems provide heating and electricity and are increasingly viewed as sources of revenue. Poorly operated or sized systems will not realise revenue. For farms that would like to install such systems, there is no tool available that optimises the systems prior to determination of their commercial viability. As such, there is a need to optimise ...
ABSTRACT The detection and location of faults on power transmission lines is essential to the protection and maintenance of a power system. Most methods of fault detection and location rely on measurements of electrical quantities provided by current and voltage transformers. In this work, current sensors and voltage sensors were used in the prototyped model of the data collection device. Training data were collected by taking into consideration variables of a simulation situation like fault...
ABSTRACT This thesis presents a rotational energy harvester using brushless direct current (BLDC) generator to harvest ambient energy for quadcopter in order to prolong it flight duration. Quadcopters also known as drones are developed with the intention of operating in conditions where the presence of an on-board human pilot is either too risky or unnecessary, as such they are broadly referred to as UAV (Unmanned Aerial Vehicles). For a drone its endurance is essential in order to achieve op...
ABSTRACT In this work, an expert system for energy management in community based microgrid was developed. This was necessitated in a bid to address the inadequate power supply predominant in sub-Saharan African countries, while also addressing the problem of energy wastage that comes from individuals supplying their own energy demands. To achieve this, an architecture for a microgrid network was developed by adopting existing standards in the geographical region of interest. An energy...
ABSTRACT In this research, Social Network Web Application (SNWA) was developed and tailored for a specific use; community development in the Niger Delta region of Nigeria. In the SNWA development, preliminary context analysis was conducted to capture contextual information on community development challenges in the Niger Delta and the readiness of the target local community to adopt web-based solution to the identified challenges. Subsequently, User-Centered Requirement Engineering, User...
Abstract Design of a Robust Electronic Internal Temperature Controller for Petroleum Distillation is presented in this Thesis. During unstable weather conditions, there is a noticeable drop in the distillation internal column temperature. An extreme and frustrating case of this occurs during rainfall and at night when the fractional distillation column external temperature drops, greatly affecting the internal. Consequently, it becomes difficult to maintain a stable and optimum inte...
Abstract Safety is crucial in oil and gas industries, it is normal practice to collect incident reports daily. The volume of such reports is always very huge, as a result, the interpretation poses a great challenge. Consequently, there is an urgent need for techniques that can intelligently assist in transforming such vast amount of data into useful information and knowledge. Data mining is part of the knowledge discovery process that offers ways of extracting non-trivial, previously unknow...
ABSTRACT Transmission Control Protocol (TCP) is the dominant transport protocol in the Internet and supports many of the most popular Internet applications, such as the World Wide Web (WWW), file transfer and e-mail. The recently developed advanced wireless networks, such as GPRS, are known to cause delay spikes in packet transfer which causes unnecessary TCP retransmission timeouts. In order to find solutions to this effect, packet losses across wireless links should be distinguished from ...