Abstract. The level of utilization of many public utilities is, most often. influenced by their locations. Huge public funds are spent annually on the provision of several public infrastructures, such as pedestrian bridges, that are grossly underutilized due to their poor location or citing. This study was aimed at developing a fuzzy logic based decision support system for the optimal location of pedestrian bridges in a typical Nigerian city. Various factors. and their interactions. that affe...
Abstract The welding workstation usually generates intense heat during operations, which may affect the welder's health if not properly controlled, and can also affect the performance of the welder at work. Consequently, effort to control the conditions of the welding workstation is essential, and is therefore pursued in this paper. This paper develops a mathematical model that maximises the work output while minimising energy consumption at the welding workstation. Particular emphasis is pla...
ABSTRACT The Power Holding Company of Nigeria (PHCN) is responsible for generating, transmitting, distributing and selling electric power to the various consumers throughout the country. The paper presents the results of an investigation conducted on some of the operations of Power Holding Company of Nigeria (PHCN) to determine some of the major factors affecting the availability of power supply to consumers in Benin City area of Nigeria. The average number of operating transformers in va...
ABSTRACT This study addresses the analytic approach to decision making and its application to manpower planning in the crown section of a bottling company in Nigeria. The company produces crowns for several bottling companies and was faced with the challenge of meeting customer’s demand, which varied from month to month. A work sampling technique was used to investigate the discrepancy between the level of the work force and their output. The result of the work sampling study showed that al...
ABSTRACT One of the major problems confronting healthcare professionals is the control of pathogenic organisms. This is because microorganisms are present in our environment and may contaminate healthcare instruments from time to time. An autoclave was designed and constructed to sterilize materials/items used in such healthcare institutions. The autoclave has a liquid capacity of 2 litres and is heated electrically with a 2kw heating-element. The test showed a decrease in the growth of micro...
ABSTRACT The Sequence Dependent Machine Setup Problem (MSP). a class of difficult problems in combinatorial optimization that is representative of a large number of important scientific and engineering problems, has been attracting much attention in recent times. In this study. literature and historical reviews of the MSP were carried out. Some recent developments were reviewed while possible future research directions were also highlighted.
ABSTRACT Electric arc furnaces (EAF) have the capabilities required for furnaces used for metallurgical research. An electric arc furnace was designed and constructed to melt approximately 5kg of steel/cast iron scraps, using locally produced Soderberg electrodes. Tests carried out showed that it required about 60 minutes to heat up the furnace to the melting temperature of cast iron (1150C – 1400C). It took about 95 minutes to melt the first charge of 2kg resulting in a melting rate of 21....
ABSTRACT This .paper presents a contribution on the development ot a,neurofuzzy mathematicaJ model that aids if? captunnq and analyzing the, various parameters iri;oven design. The oven 'was designed ~pecif.ically,for domestic and commercial baking: operations, The neurofuzzy methodolOgy was used to requlate the oven baking temperatures to acceptable standards. Particular use was made 'of neurofuzzy model since it is animprovement on the process design. The work.was motiyatedby the need fm· ...
ABSTRACT / grinding wheel is an expendable wheel which is made of very small, sharp and hard silicon carbide abrasive particles or grits held together by strong porous bond. This paper presents a study on some factors and parameters of silicon carbide abrasive grinding wheels which were developed and formulated Irom locally sourced raw materials in Nigeria. Six local raw material substitutes were identified through pi lot study and a systematic search for an optimal formulation of silicon car...
Abiroct :.~am'fburi s usually required for the preparaUon of pounded yhWh lch is a dally nutdthnal fwd requlremeilt for most Africans. it facilitates he prephatian of pounded yam for both domestlc end cwnkclal dorrsumptlon. The prpducfion process and the baslo operations involved In the production of pounded yam ftour have been investigated !n'@her to -ti& the prodyctron capadty of the company studled, A time study mode! was &weloped and appli@ to aria1yze the vartws baAc operaths Imrolved in...
Abiroct :.~am'fburi s usually required for the preparaUon of pounded yhWh lch is a dally nutdthnal fwd requlremeilt for most Africans. it facilitates he prephatian of pounded yam for both domestlc end cwnkclal dorrsumptlon. The prpducfion process and the baslo operations involved In the production of pounded yam ftour have been investigated !n'@her to -ti& the prodyctron capadty of the company studled, A time study mode! was &weloped and appli@ to aria1yze the vartws baAc operaths Imrolved in...
ABSTRACT The varying shapes and sizes of cassava tubers have made cassava peeling to one of the major problems in the mechanisation of cassava processing. A cassava peeling machine was designed and constructed. The design parameters include a power requirement of 0.36hp, belt tensions of 349.7 and 1807.5N and shaft diameter of 35mm. Its main component is a peeling chamber, which consists of two perforated drums rotating in the opposite direction. The machine had an average capacity of of 44.5...
ABSTRACT;, This paper presents an important research 1001 in operations research as it applie~'to a particular structure of theinunicritcria assignment problem. The paper addresses the problem of effectiveness of feasible solutions of a multicritcria assignment problem and this was done in two steps. In the first step. we determine whether or not a given feasible solution of a n-ulticriteria assignment problem is a real efficient one. In the second step. if the feasible solution is not real e...
Poor finishing and aesthetics capabilities of metal fabrication companies in Nigeria have been identified as a major cause of the poor acceptance of locally fabricated metal products. This study was aimed at assessing some finishing capabilities of Nigerian companies.