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| A Review of Material Requirements, Planning, and Program Evaluation Techniques: through a Just-In-Time Manufacturing Environment
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Amanawa, Ebiegberi David (Ph.D.); Micah, Nyone Uelee (Ph.D.); ,Nwiyii, Blessing Joseph (Ph.D.)
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Abstract:
This work ascertained the relationship between material requirements planning and program evaluation review technique in the manufacturing environment in Port Harcourt. The objective of the study was to determine the relationship between the dimensions of material requirements planning, such as master production schedule, bill of materials, and inventory status file, and the measures of program evaluation review technique, such as optimistic time, pessimistic time and most probable time in manufacturing environment in Port Harcourt. The targeted population of the study consisted of eighty-eight (88) managers in 22 manufacturing firms in Port Harcourt, Nigeria. The entire population of eighty-eight (88) managers was used for the study without sampling since the population was considered to be large enough to be dealt with. Thus, the study was census research which entails using the entire population. A structured questionnaire was used to obtain primary data after due validation and ascertain the instrument's reliability at 0.74 using Crombach alpha. The researcher was able to retrieve seventy-six (76) copies of the questionnaire distributed. SPSS Version 20.0 was used to run the analysis. Spearman Rank Order was used for the Bivariate analysis. The findings of the study revealed that the master production schedule has a highly positive relationship with the program evaluation review technique in the manufacturing environment in Port Harcourt; the bill of materials has a highly positive relationship with the program evaluation review technique in the manufacturing environment in Port Harcourt, and that; inventory status file has a high positive relationship with program evaluation review technique in manufacturing environment in Port Harcourt. The study concluded that material requirements planning, in terms of the master production schedule, bill of materials, and inventory status file, is a piece of powerful machinery that manufacturing firms can utilize to maximize their profit when matched with program evaluation review techniques in a just-in-time manufacturing environment. Amongst other things, the study recommended that the management of manufacturing firms should train their special personnel to judiciously utilize their material requirements planning, program evaluation review techniques, and other computer-based tools to enhance their customer satisfaction and profitability, among other things.
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