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All Journal Operations Research: International Conference Series International Journal of Global Operations Research
Nasyifa, Hesti
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Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Engineering Mathematics

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Dynamic Simulation of Doctor Needs in East Java Province By Using iThink Zabrina, Siti; Nasyifa, Hesti; Febryan, Calvin; Tosida, Tita; Subandi, Kotim; Sugara, Victor Ilyas
Operations Research: International Conference Series Vol. 6 No. 1 (2025): Operations Research International Conference Series (ORICS), March 2025
Publisher : Indonesian Operations Research Association (IORA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/orics.v6i1.370

Abstract

This study compares the calculation of doctor needs in East Java Province using two dynamic simulations, namely iThink and Python. The purpose of this study is to identify differences in results between the two simulation platforms in estimating the need and availability of doctors based on population growth and the number of medical graduates. The methodology used involves modeling population dynamics and the flow of active doctors by considering the inflow of medical students and the WHO ratio. The results of the iThink simulation show an increase in the number of active doctors from 42,000 to 63,793 in 10 years, approaching the ideal WHO ratio, while the Python simulation shows a significant gap between the need and the number of doctors, with the need reaching 257,680 doctors in 2029, but the number of active doctors only reaching 21,686. This difference is due to variations in the methodology and approach of each platform. The conclusion of this study shows the importance of policy interventions to meet the need for doctors in the future and reduce the gap between the need and availability of doctors.
MODELING OF QUEUES AT 3 KG LPG FILLING AND TRANSPORTATION STATIONS (SPPBE) WITH OPTIMIZATION OF PROMOTIONAL SERVICE STATIONS Zabrina, Siti; Nasyifa, Hesti; Febryand, Calvin
International Journal of Global Operations Research Vol. 6 No. 2 (2025): International Journal of Global Operations Research (IJGOR), May 2025
Publisher : iora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/ijgor.v6i2.376

Abstract

Queues are a common problem that often arises from an imbalance between the arrival rate and the service capacity or facilities. Queues occur because customers (users) arrive at a service facility when the available service capacity is insufficient to handle the incoming demand. Queues often occur in the Single Channel - Single Phase queue system, which is observed at SPPBE (Filling and Transportation Stations for Bulk LPG). In the Single Channel - Multi Phase queue structure, queues also occur due to the accumulation of waiting time required for each service stage. Therefore, this research aims to explain the model and analyze the queue system that occurs at SPPBE, provide an explanation of the analysis results of the Single Channel - Single Phase queue model for two service locations, and use the Kolmogorov-Smirnov method for data conformity testing. The SPSS program was used to analyze the Single Channel - Single Phase queue model for two service locations and to use the Multi Channel - Multi Phase queue model for the two service locations.
Co-Authors Febryan, Calvin Febryand, Calvin Subandi, Kotim Sugara, Victor Ilyas Tosida, Tita Zabrina, Siti