ABSTRACT This paper aims at applying a fuzzy logic control model to profitability in a case study of the plastic recycling industry in Nigeria. The studies of profitability components of the plastic recycling industry as used to develop a model framework and the application of fuzzy logic control model to the framework are given in this paper. A brief introduction to profitability concepts as well as useful suggestions and conclusions are all integral part of this paper which is based on the...
ABSTRACT This study presents a generalized analytical formulation of the Multi-Well Interference test problem using the concepts of the source and sinks functions as a tool for solving the basic interference equations.
ABSTRACT In the process of generating a cam profile, input parameters such as lift, maximum allowable pressure angle, eccentricity and roller-radius are subjected to variations.
ABSTRACT Working properties of some clay deposits in Ekiti State, Nigeria were investigated with a view to determine their suitability for use as refractory bricks. The samples were collected from three different commercial pottery clay centers in Ekiti State; they are Ara, Awo and Isan. Two varieties were collected from both Ara and Isan, which are named Ara 1, Ara 2, and Isan 1, Isan 2 respectively while only one type was collected from Awo. The clay samples were crushed, pulverized, sieve...
ABSTRACT This study investigates various insulation thicknesses requirements for double-walled spherical pressure vessels for the storage of cryogenic liquids. The inner tank is suspended from the outer tank by straps or cables and the annular space between the tanks is filled with insulation. The outer tank is not subjected to the freezing temperatures and is thus assumed to be a standard carbon steel sphere. In the Finite Element Analysis model of the system, one dimensional analysis was e...
ABSTRACT A non-pre-emptive goal programming (NGP) model for weld metal chemical composition optimization from welding-flux ingredients is proposed.
ABSTRACT This paper investigate some important works done on numerical analysis and modeling of laminar flow in pipes. This review is focused on some methods of approach and the analytical tools used in analyzing of the important parameters to be considered in laminar flow; such as frictional losses, heat transfer etc. in laminar flow in pipes of different shapes, and the importance of laminar flow in its areas of applications. Prominent researchers have approached this from different perspe...
ABSTRACT The effects of fiscal terms on true government take under joint petroleum ventures and production sharing contracts were investigated. A generalized cash flow model was developed and used to evaluate government revenues under different fiscal terms and contractual agreements. Analyses revealed that government take is reduced in joint ventures with divestment of equity if other fiscal terms remain unchanged.
Abstract Upper bound solutions to a 4-High reversing aluminium cold-rolling sheet mill was obtained in this work using both analytical and graphical methods. The upper bound method was applied to the rolling of an Al 1200 sheet from 7mm to 0.6mm in six passes. It was observed that both methods were very effective in predicting upper bound load value with the graphical method giving a higher value using input velocity values from industry. However, it was observed that the graphical method be...
ABSTRACT Waste management is a very big challenge in Nigeria today.
ABSTRACT Most Finite Element Analysts in Nigeria develop own codes for their analysis due to inability to purchase commercial finite element analysis software packages that GUI geometric modelers and difficulty in managing coordinate data from imported CAD files.
ABSTRACT The fact that the drive parameters space of harmonically excited pendulum consist of mix parameters combination leading to different dynamics phenomena including chaotic and periodic responses is a strong motivation for this study aim at estimating the peak frequency that favour chaotic response
ABSTRACT Sustainability of agriculture is dependent upon availability of reliable climatic data for planning. Daily and monthly data were obtained for Ibadan, Nigeria from International Institute of Tropical Agriculture (niA) automatic weather station and Nigerian Meteorological Agency (NMA) manual weather station.
Abstract The contribution of this paper to traffic engineering is the application of Laplace Transform to the quantification of speed control in the modelling of road bumps with hollow rectangular shape. The paper simulates the behaviour of a vehicle when passing over a series of bumps. In many countries the current practice used for lowering the vehicle speed is to raise road bumps above the road surface. If a hollow bump is used it may be economical and offers other advantages over road bu...
ABSTRACT An electricity audit of a building is the process whereby an energy manager survey and analyzes how energy is used in the building with the main objective of identifying opportunities for reducing the amount of energy used and ensuring that available energy is used efficiently.