Supply Chain Management by Means of Simulation (original) (raw)
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Simulation has become an important information technology tool for analysis and improvement of ent ir supply chain operation. One of the most important supply chain operation stability measures is a bull whip effect value. The bullwhip effect can lead to holdi ng an excessive inventory, insufficient capacities and hi gh transportation costs. It is important to investigat e the magnitude of this effect by quantifying it. There a re a variety of methods, which address bullwhip effect modelling. Nevertheless, there is a lack of methods f r its numerical evaluation in a supply chain. This pa per proposes statistics and probability theory based analytical methods which allow quantification of th e bullwhip effect value in a supply chain that operat s under uncertain market demand. Simulation technique is used to validate results obtained from the analytic al model. Based on validation results, the logic of th e analytical model is examined, and some specificatio ns of the analytical mode...
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Under the competition among the global market place, enterprises must have skills of dealing with uncertainty. It is known that the lack of information sharing causes the uncertainty. The order variability increase as we move up the supply chain. In this study the bullwhip effect in supply chain is studied. The increase in inventory costs under the bullwhip effect is examined using simulation method. The effect of choosing the right forecasting technique for the demand pattern is taken into account to show its impact on the bullwhip effect.
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Applying Multi-agent simulation in tracking the Bullwhip effect of supply chain system
We have applied a fast, easily extensible, discrete-event multi-agent simulation toolkit in Java. This approach is being applied to serve as the basis for a wide range of multi-agent simulation tasks in the supply chain environments. MASON carefully delineates between model and visualization, allowing models to be dynamically detached from or attached to visualizers, and to change platforms mid-run. We describe the multi-agent simulation system, its motivation, and its basic architectural design. We then compare the impact of the simulation approach to related multi-agent libraries in the public domain, and discuss applications of the system in bullwhip effect reduction in supply chain system. In this paper, we propose a framework for business process simulation based on multi-agent cooperation. Social rationality of agent is introduced into the proposed framework. Adopting rationality as decision making strategies, flexible scheduling of activities is achieved.
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Journal of Innovation and Technology, 2021
PT XYZ is one of the most company which produce welded steel pipe in Indonesia such as longitudinal and spiral pipes. In order to meet consumer’s demand, this company faced with an obstacle namely the distortion of information in supply chain. Distortion of information from downstream to upstream channel causes the difference between the product demand from consumer to PT XYZ and order of raw materials from PT XYZ to the supplier which is called the bullwhip effect. The objective of this research is to calculate the value of bullwhip effect as well as designing improvements to minimize the bullwhip effect. Based on the research results, obtained the index value of bullwhip effect on longitudinal pipe products is 1.06 and the index value of bullwhip effect on spiral pipe products is 0.80. The improvement design to minimize the phenomenon of bullwhip effect is to build an integrated information system for the customer, manufacturer, and supplier. The method that is used to improve the...