ABSTRACT A biobjective production planning problem was modelled using the Compromise Constraint Biobjective LP (CCBLP) method, the traditional Weighted-sum Scalarization (WSS) and Non-preemptive Goal Programming (NGP) approaches. Various preference indices were used to explore the tradeoff options and the ~ distance metric was used to determine the best compromise solution and the appropriate preference indices. The solution of CCBLP was the closest to the ideal solution with L1 metric of 0.3...
ABSTRACT This paper presents a bicriteria formulation of the material allocation to production facilities problem. The system under consideration is a toothpaste factory. Two objectives of the factory were identified, namely; (i) Minimization of the total sum of processing costs (ii) Maximization of the capacity utilization of production facilities. Linear Combination of Objective Functions (LCOF) method was used to solve the problem for the situation where the objectives were of equal impor...
ABSTRACT This study assessed dry season farming profitability and examines farming practices and their influence on the environment. Dry season farming practices identified from the literature were irrigation practices, land preparation, tillage practices and use of agrochemicals. A cross sectional design was adopted as quantitative data was collected from respondents. Five (5) communities along the White Volta River in the Bawku West District were purposively selected based on their p...
ABSTRACT Two field experiments were conducted to compare the growth and yield of tomatoes using experimentation and FAO AquaCrop model at the University of Cape Coast Teaching and Research Farm in the Cape Coast Metropolitan Assembly of the Central Region of Ghana. The Randomized Complete Block Design was used with four (4) treatments and four(4) replications for the two experiments. The treatments used for both experiments were T1 – Full irrigation (100 %), T2 – 90 % irrigation, T3 – ...
ABSTRACT The aim of this research was to design a mini-grid solar photovoltaic electricity system for Mpahin village in the Central Region of Ghana. The researcher adopted the mixed method approach. The study is organized into two parts. In the first part of the study, a comprehensive interview was performed on respondents to know their economic conditions, their means of getting light and cooking, their preferred energy, their knowledge about solar energy and its impact on their lives as we...
ABSTRACT The drying kinetics and effect quality of dried moringa leaves using different drying methods. The methods were microwave (MW) alone, solar, sun, shade, hot air alone and blanch-assisted and MW-assisted hot air drying methods. The drying experiments were performed in the temperature range of 50 to 70 °C, MW-power of 270 to 720 W, blanching time of 1 to 3 min and sample thickness 3 to 20 mm. MW-pretreatment time, blanching time, sample thickness, microwave power and hot air temperatu...
ABSTRACT The paper presents a control system for grinding process using fuzzy rule-based model for estimating the grinding conditions at which wheel wears occur. The grinding parameters include circumferential speed of a grinding segment workpiece velocity and work depth of cut using silicon carbide grinding wheels. There was a wide range of applications over many types or mild steel materials and various wheel wear values were recorded for predicting the grinding conditions. Grinding wheels...
Abstract: Rattan, a non-timber resource in Nigeria’s South-South forests remains largely unexplored. To create schedule for unlocking its potentials, this study investigates its availability, distribution and current utilization pattern in Akwa-Ibom, Bayelsa, Cross-rivers and Rivers States in Nigeria. Information was collected using structured questionnaire and on-the-spot-assessment while data was analyzed using simple statistical tools. The four states has rattan in abundance but unevenl...
ABSTRACT Accurate molecular weights of pure compounds are available and can be readily obtained in the literature. However. those of binary and multi-component mixtures are not readily available and are usually obtained from pure components by applying mixing rules. which may not be very accurate. The molecular weights of n-Nonane+n-Tetradecane. nc;exane+n-Nonane. n-Hexane+Toluene, Toluene+n-Tetradecane and some petroleum liquids were experimental I: determined using a cryoscope. The results...
ABSTRACT In this paper, the problem of optimising cash flow so as to enhance the financial feasibility of a multipart project is considered. The problem has been modelled as a single machine scheduling problem. Several sectors of the Nigerian economy where this problem is encountered are also discussed. A real life problem was solved on a PC using an electronic spreadsheet.
ABSTRACT In Ghana, Ghana Grid Company, GRIDCo has experienced huge power losses due to poor maintenance and management practices. For this reason persistent power outage has plunged the country‟s economy into a huge set back in the last four years. Power quality problems are common in most commercial, industrial and utility networks. The specific objectives of this thesis were to study the role of automation in improving transmission systems, evaluate maintenance performance in trans...
ABSTRACT Knowledge of the required amount of irrigation and the time in the day to irrigate is very important for the efficient use of irrigation water and the maximization of vegetable yield and quality. In this experiment, the effect of time of irrigation (morning and evening) and amount of irrigation (100%ETc, 90%ETc and 80%ETc) on the growth, yield, physicochemical quality, shelf life, WUE and economic value of sweet pepper was investigated using completely randomized design with 3 replic...
ABSTRACT Many fuel stations in Ghana have explored alternative sources of income in order to remain profitable and it is a concern that there are too many fuel stations, resulting in an overtraded market. The retail fuel outlet businesses in the country incorporated the usage of various market mix elements to improve their profitability, price positioning, and competitive advantage to survive and grow (Johne & Davies, 2002). Achieving efficient and effective product marketing strategy by an o...
Abstract This study investigated the corrosion resistance of plated and unplated steels useful as ornamentals in saline environment. Nickel plating of carbon steel was done in watts solution for 25minutes with a current density of 3 Adm-3 at 60o C. The nickel plated carbon steel was later gold plated for 20 minutes with a current density of 0.2 Adm-3 at 50o C . The plated and unplated carbon steels were immersed in saline environment for 360 hours. Weight loss was taken every 24 hours in orde...
ABSTRACT Optimization of hatchery production processes was carried out using the Monte Carlo method. In the economics. of engineering decisions with the objective of the investor identifying an optimum solution. an investor chooses his or her optimal solution from the set of scenarios that offer maximum expected return for varying levels of risk. Outcomes associated with these random numbers are then analysed to determine the likely results and the associated risks. Taking a major day old h...