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All Journal JRSI (Jurnal Rekayasa Sistem dan Industri) JURNAL MANAJEMEN IKRA-ITH Humaniora : Jurnal Sosial dan Humaniora The Management Journal of Binaniaga Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences ARBITRASE: JOURNAL OF ECONOMICS AND ACCOUNTING Berdikari : Jurnal Ekonomi dan Statistik Indonesia
Resista Vikaliana
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Religion Arts Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Industrial & Manufacturing Engineering Social Sciences Other

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Performance Evaluation of Raw Material Suppliers at Manufacturing Company Using Analytical Hierarchy Process Method Rio Febryan; Resista Vikaliana
Jurnal Rekayasa Sistem & Industri Vol 10 No 02 (2023): Jurnal Rekayasa Sistem & Industri
Publisher : School of Industrial and System Engineering, Telkom University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25124/jrsi.v10i02.734

Abstract

PT Trafoindo Prima Perkasa is a medium-sized electrical equipment manufacturing company that usesbushings as raw materials for transformers. Therefore, it is important to evaluate bushing suppliers toensure the appropriate quality and quantity of raw materials. Currently, the company faces issues withdelayed raw material deliveries, which disrupt production. The research aims to evaluate the performanceof bushing raw material suppliers using the Analytical Hierarchy Process (AHP) method, focusing onprice, quality, service, and delivery. The AHP method is employed for multi-criteria decision-making insupplier performance evaluation through questionnaires and analysis using Expert Choice software. Theanalysis results indicate that price is the primary evaluation criterion with a value of 0.398, and Supplier Ademonstrates the best performance with a score of 0.280.
Forecasting Analysis of Crude Palm Oil (CPO) Demand using Single Exponential Smoothing, Moving Average and Holt Winter’s Methods at the Palm Oil Plantation Company Catherine Intanadya Ilhamti; Resista Vikaliana
Jurnal Rekayasa Sistem & Industri Vol 11 No 01 (2024): Jurnal Rekayasa Sistem & Industri
Publisher : School of Industrial and System Engineering, Telkom University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25124/jrsi.v11i01.733

Abstract

PT Steelindo Wahana Perkasa, a part of the KLK GROUP, is a palm oil plantation company located inEast Belitung. They produce olein and stearin through a refinery plant with a capacity of 1000 MT ofCrude Palm Oil (CPO) per day. These products are exported to Asia and Europe, including countries likeMalaysia, Singapore, China, and the Netherlands. Olein is also sold in the Belitung region. Currently, thecompany only produces around 170 MT of CPO per day, so they purchase CPO from other companies.Research is conducted to analyze the future demand for CPO using the Single Exponential Smoothing,Moving Average, and Holt Winter's methods. The research's goal is to determine the most accurate methodbased on the Mean Absolute Percentage Error (MAPE) value. If MAPE is <10%, the method is consideredsuitable for forecasting CPO demand. The research results indicate that the most appropriate method isHolt Winter's, with a MAPE of 8.6% and 4.4%. In period 13, company A will purchase 2,780.08 MT ofCPO, and company B will purchase 4,496.10 MT.
Co-Authors Abdul Hadi Antoni Ludfi Arifin Aziza Leila Komala Catherine Intanadya Ilhamti Cundo Harimurti Fitri Khoerunisa Hendri Hermawan Adinugraha I Nyoman Purnaya Irwansyah Irwansyah Laode Sabaruddin Putri Pingkan Damayanti Rio Febryan Safri Nurmantu Wahyu Sinta Eliysabet Wahyuddin Latunreng Widya Hastri Astusti Yogi Priambodo Yuli Evitha