The objective of this study was to investigate the current research practices and existing progress research published on supply chain management and supply chain integration in an attempt to provide a research agenda for future investigations. Mainly the secondary data analysis and methods employed for the investigations. Particularly a systematic literature review analysis from 115 papers published from 16 important journals in the supply chain, logistics, Industrial management & data systems, supply chain management: an international journal and operations management during the period 1997 to 2018 was employed. This paper has identified relevant supply chain integration research studies that have contributed to the development and growth of manufacturing industries performance and competitiveness to the SCI and SCM fields. The analysis of the relevant articles gaps and miss-concepts in the previous literature provides to reduce universality and insufficient ordinary view, confusion of supply chain integrations were investigated. The gaps and investigations were done based on their methodological porches, objectives, analysis and research finding. Mainly the gaps, miss concepts and challenges concepts in the previous literature were identified and grouped in
Abstract:Welding cast iron is used in ships, bridges, pressure vessels, industrial machinery, automobile, rolling stock and many other fields. Problems associated with welding are common issues in these fields. A Study was conducted to investigate Weldability of grey cast iron, as grey cast iron contains graphite in flake form, carbon can readily be introduced into the weld pool, causing weld metal embrittlement and Grey cast iron welds are subject to the formation of porosity and the cold cracking susceptibility of welds. When we observed that gray cast iron is welded non uniform heating and cooling in weld metal and in base metal generates harder Heat Affected Zone (HAZ), cold crack susceptibility and residual stress in weldement. Different methods investigate experimentally to minimize above difficulties. Those methods for reducing the effects of above problems were, minimize base metal dilution, compensate for shrinkage stresses, and the use of low strength filler metals to reduce cracking without sacrificing overall joint strength. Main while the beast type of arc welding electrodes for welding of grey cast iron are nickel and nickel-iron types have been used with or without preheating and / or post weld heat treatment. At the same time Cast iron and steel electrodes must be used with high preheats (530°C) to prevent cracking and the formation of hard deposits. The other mechanisms to improve Weldability of gray cast iron are Pre heating and/or Post heating of the base metal was experimentally employed and investigated.
Abstract:This study describes the problems of solid waste generation in small and medium scale enterprise. The analysis was conducted in Meserte Gabi metal and machine work enterprises using purposive sampling method with 16 sample sizes of this enterprise employer. Filed observation, unstructured interview, and questioners were instruments that use pre and post assessment tools for problems of solid waste management. The study explores the existing situation of the enterprises about solid waste management. The result shows that Solid waste issues were the major problems of Meserte Gabi metal and machine work enterprise. Findings show that waste prevention, recycling; collecting, and awareness, training and awareness are the major problems of the enterprises. After actions were done (conducting training, implementation of kaizen and capacity building) result predicts that, the impact of solid waste problem were changed and proper solid waste management systems were developed. The study highlights that it is essential that the government starts to recognize the mechanisms of supporting of enterprises in order to improve the overall solid waste management system in Dessise-Ethiopia. From the action obtained that conducting training, capacity building, resource utilization, and implementation of kaizen were mechanisms that developed solid management systems in the enterprises.
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