scholarly works
Permanent URI for this collectionhttps://repository.ui.edu.ng/handle/123456789/473
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Item Comparison of compromise constraint bi-objective LP method and three traditional weighted criteria methods(Department of Industrial and Production Engineering, University of Ibadan, 2020) Adeyeye, A. D.; Arise, O. T.; Charles-Owaba, O. E.Item Application of mathematical programming approach to welding flux development(Nigerian Metallurgical Society, 2011-05) Adeyeye, A. D.Item What and how about competitive benchmarking(ABM, ABC and ABPol, 2011) Adeyeye, A. D.Most of the domestic industries In Nigeria lag behind their foreign competitors when it comes to cost and quality. People turn to the low price and often higher quality of imported goods. This paper suggests that benchmarking could be used to match and even exceed the competition. Based on the experience of companies in the industrialized world that have successfully used benchmarking to overcome adversity and have emerged stronger, the paper suggests that the same success could be achieved by our domestic industries. The description of the benchmarking process, the guidelines and framework for its application and some of the implementation problems are discussedItem Optimisation of weld-metal chemical composition from welding flux ingredients: A non-pre-emptive goal programming approach(Maejo University, San Sai, Chiang Mai, 50290 Thailand., 2010) Adeyeye, A. D.; Oyawale, F. A.A non-pre-emptive goal programming (NGP) model for weld-metal chemical composition optimization from welding-flux ingredients is proposed. The proposed model, which is the first multi-objective mathematical programming approach to welding-flux formulation, provides increased flexibility to the welding-flux formulator in several ways: (1) several conflicting objectives can be simultaneously considered, (2) the best compromise for welding-flux formulation can be achieved with minimal expenditure of resources and experimental efforts, (3) the welding-flux designer can explore various trade-off options, and (4) the lead time and cost of developing welding consumables can be drastically reduced. This paper has extended the work of Kanjilal and co-investigators by coupling it with the NGP optimisation technique so as to prescribe the welding-flux ingredient levels that will achieve optimum performance for the flux at minimum experimental efforts and cost. The feasibility and suitability of the model is illustrated with data from the literature.Item Multi-objective methods for welding flux performance optimization(Faculty of Natural Science and Engineering, Ljubljana, Velenje Coal Mine and Institute for Mining, Geotechnology and Environment (IRGO), Ljubljana, 2010) Adeyeye, A. D.; Oyawale, F. A.The traditional welding flux development is by lengthy and costly trial and error experiments and the optimum welding flux formulation is not guaranteed. This paper presents discussions on promising multi-objective decision making (MODM) methods that can mitigate the limitations of the traditional approach to welding flux design. The methods are weighted-sum scalarization (WSS), desirability indices, goal programming and compromise programming. The steps a welding flux designer (WFD) may follow to determine the best compromise welding flux, welding flux design situations where each may be useful and tradeoff explorations were mentioned. No attempt was made to determine the relative merits of the approaches because the usefulness of each depends on the welding flux design situation. The descriptions only serve as a guide for the WFD to decide which method best suits his needs.