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Determination of the Medical Equipment Delivery Route for PT Tri Sapta Jaya Using Simulated Annealing (SA) Algorithm Rizal, Muhammad Alde; Hardiman, Hendi Dwi; Diningrat, Mohammad Santosa Mulyo; Saidatuningtyas, Ifa
International Journal of Multidisciplinary Approach Research and Science Том 2 № 01 (2024): International Journal of Multidisciplinary Approach Research and Science
Publisher : PT. Riset Press International

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59653/ijmars.v2i01.405

Abstract

This research was conducted at PT Tri Sapta Jaya, a medical equipment distributor company. The product distribution to consumers was inefficient due to using traditional methods. The division of regions and determination of delivery routes was based on districts and cities. The existing delivery method faced various challenges, including delivery delays and inefficient routes. This inefficiency results in potential financial losses for the company in terms of delivery costs. To assist the company in improving delivery efficiency, this research focuses on determining vehicle routes considering vehicle capacity (Capacity Vehicle Routing Problem). In solving and searching for solutions, the research uses Simulated-Annealing algorithm. The algorithm generated an initial solution randomly and improved the solution by changing the positions of consumers within a route and switching positions of consumers between routes to obtain the best solution. The computation time of the developed Simulated Annealing algorithm was quite efficient, taking only 2 seconds for 25 consumers. Based on the data from PT Tri Sapta Jaya, the best solution obtained was 615,319. This result was achieved using the Simulated Annealing algorithm with the parameters T0 = 100,000, Ta = 1, and α = 0.9.
Perancangan Aplikasi Monitoring Stok Berbasis Web dengan Optimalisasi Tingkat Persediaan pada PT Nandya Karya Perkasa Rizal, Muhammad Alde; Ramadhan, Muhamad Rivan Ardiansyah; Hardiman, Hendi Dwi; Diningrat, Mohammad Santosa Mulyo; Saidatuningtyas, Ifa
Jurnal SENOPATI : Sustainability, Ergonomics, Optimization, and Application of Industrial Engineering Vol 6, No 2 (2025): Jurnal SENOPATI Vol 6, No 2
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.senopati.2025.v6i2.7371

Abstract

PT Nandya Karya Perkasa is a manufacturing company that produces motor vehicle spare parts. PT Nandya Karya Perkasa supplies its products to several automotive companies. The company faces issues with its inventory due to frequently fluctuating demand, often leading to order cancellations. Data from the past three months shows the company had to cancel approximately 19% of orders. This issue arises because of the limitations of the previously used application. Some crucial data, such as stock levels, which should support decision-making, is still missing, as the existing system only focuses on recording goods' inflows and outflows. This study aims to propose improvements to the use of the Inventory Management System application to facilitate the planning department in planning the production process, ensuring the availability of goods in the warehouse to meet all consumer demands. The method used to address this problem is a web-based application for monitoring goods, which can provide feedback for production planning improvements in case of demand changes. The system is developed using the Prototype method. A two-month trial has shown a reduction in order cancellations to 11%.