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Vol. 8 No. 02 (2021): Jurnal Rekayasa Sistem & Industri
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Articles
System Dynamic Modeling in Blood Supply System (Case Study)
Authors
Eva Oktaviana
Universitas Syiah Kuala, Indonesia
Andriansyah
Universitas Syiah Kuala, Indonesia
Raihan Dara Lufika
Universitas Syiah Kuala, Indonesia
Nissa Prasanti
Universitas Teuku Umar, Indonesia
Keywords:
Blood inventory, System dynamic, Causal loop diagram, Stock and flow diagram
Abstract
XYZ is one of the agencies that handle the distribution of blood with the amount of supply needed to meet demand is uncertain. Problems occur in inventory management which has an impact on bloodstock fluctuations. This research was conducted using a dynamic system approach to design a blood supply model at XYZ and provide recommendations for the best scenario for existing problems based on the priority indicators of the objectives. The structure of the model is described in causal loop diagrams and stock and flow diagrams. The objective function of this modeling model is to minimize the instability of the blood supply so that it can stabilize the intake and output of blood donors. Four policy scenarios are simulated in the model with the parameters used is the number of replacement donors and low expired blood. The simulation result for the best scenario is a scenario that has 230 donor bags every 15 days with a policy of procuring donors twice in one month.
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