Abstract Hand tools sold in Nigeria have kom hndngly diable due to critical faihms during use. Tlte objective ofthis sftrdy is to test irsrrnplw ofk&b 'vis-d-vis ~~s claims. A toaal of (15) had -1s from six (6) diffcmwmmtri& ~~ on the Nim && wm tested k'wwv -'m tested tods ioduded SE-, hammers, screwdriv~plim~~.~~~p~es~~of~gnoupsof~~~werer~acmrdanw to their hpac$ -which is a major proprty ofpmtwion took. The dtssh owed tbat built-in mecbkl properties of these tooh wm Imply controtled by their...
ABSTRACT This work is aimed at determining the feasibility of manufacturing automobile batteries on a small scale ·Ievel. It involves an economic evaluation directed at the typical 12V, 60Ah car battery. A process analysis was done with a view to determining the scalability of the processes. A review of relevant literature gives insights on the product structure and workings, material interactions, process requirements and the various manufacturing strategies and their respective benefits. T...
ABSTRACT This study was designed to determine the effects of challenge-based and activity-based learning approaches on technical college students’ achievement, interest and retention in woodwork technology. A pre-test, post-test, non-equivalent control group, quasi-experimental research design was adopted. The study constituted a total number of 122 subjects, 63 for the Challenge based learning, while 59 were for the activity-based learning. Eight research questions and twelve null hypothe...
ABSTRACT The study was carried out to determine the effect of suggestopedia instructional technique on academic achievement, interest and retention of metalwork students of technical colleges. Six research questions were answered while nine null hypotheses formulated were tested at a 0.05 level of significance. The study adopted a quasi-experimental design and was carried out in Lagos State. The population for the study was 410 male and female students. The sample size for the study was 114 ...
ABSTRACT: Safety practices and performance in a brewery industry in Nigeria was evaluated for a period of eight years between 2000 – 2007 using the principles of statistical expectation and efficiency index. The number of prevented accidents and the corresponding values of lives and property saved were estimated annually for the same period of eight years. The type of input resource, total number of input resources, total number of prevented accidents by class, the unit cost of each of the ...
ABSTRACT Local production of elechodes. in Nigeria has always bpb~y m ajor manufachmrs. The technical partrsers have maintained that there are no suitable substiW!es for the raw materials locally in an attempt to continue b import from *eit. 'h~.~coqn@esOu r effort at .lpwl sourcing required experimentation. Mi could not be carried out without a Wns of applying the coatmg to. the wire. This was effected through a direct exhder. which was fabricated to mat eWodes.pnder manual presswe .bu@ up t...
ABSTRACT Tlt b pqcr considers tlre problent of scltedulir~gin fiw-sliop by Joh~zson's Algorithm tnetl7od and Genetic Algurii/tnt nletltod to jind an optimal segtiencc for n jobs rntjrncl~ ineb uxeii or1 ~nir~Gtue~la~prse d tinte. I/ has been sl~own hat tlre method for Jinllir7g at1 opti~~rsaelq trence for n job,^, m-tltncltilt~b ased on mini~~tzrmm ake spun Kcywords:Johnson's hlgoritlim, Scheduling, Flow-Shop, Gcnctic Algorithm, Optimal SC~UCI
ABSTRACT In an attempt to facilitate the processing of vegetable material which is a daily nutritional food requirement of man, a vegetable slicing machine has been developed. This paper therefore presents the developmerit of a vegeuble slicing machine which is a mechantcat device that is used for slicing vegetable materials instead of the cnlde cumbersome and unhygienic method of manual slicing of vegetable materials. l*he dwdoped machine consists ofthe hopper, the cutter housing, the cuttin...
Abstract The manufacture of abrasive grains in igeria has been severely impeded by the difficulty of identifying suitable local raw materials and the associated local formulation for abrasives with global quality standards. This paper presents a study on the formulation and manufacture of silicon carbide abrasives using locally sourced raw materials in igeria. Five local raw material substitutes were identified through pilot study and with the initial mix of the identified materials, a system...
ABSTRACT This study shows the usefulness of Artificial Neural Network (ANN) in maintenance planning and management.
ABSTRACT A non-pre-emptive goal programming (NGP) model for weld metal chemical composition optimization from welding-flux ingredients is proposed.
ABSTRACT Waste management is a very big challenge in Nigeria today.
ABSTRACT In this paper a forward difference operator method was used to solve a set of difference equations. We also find the particular solution of the nonhomogeneous difference equations with constant coefficients. In this case, a new operator call the forward difference operator ∆r,s, defined as ∆r,s yn = r yn+1 - s yn, was introduced. Some of the properties of this new operator were also investigated.
ABSTRACT Some welded structures show poor mechanical properties at the weld and the adjacent zones. This has led to the collapse of structures when subjected to various torques. This research investigates the grain structure of the fusion zone of a single pass arc welding of structural steel to identify the mode of growth and grain transition of the zone and adjacent weld. Two parameters – temperature gradient in the direction of solidification and rate of advance of solidification were stu...
ABSTRACT Linear fractional programming problems are useful tools in production planning, financial and corporate planning, health care and hospital planning and as such have attracted considerable research interest. The paper presents a new approach for solving a fractional linear programming problem in which the objective function is a linear fractional function, while the constraint functions are in the form of linear inequalities. The approach adopted is based mainly upon solving the probl...