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All Journal IIJSE Danadyaksa: Post Modern Economy Journal
Fatlina Zainuddin
Universitas Tadulako, Palu, Indonesia
Decision Sciences, Operations Research & Management Economics, Econometrics & Finance

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Layout Evaluation at PT Juyomi Sinar Labuan Using the Systematic Layout Planning Method Nur' Asia; Sulaeman Miru; Umar Syarifuddin; Fatlina Zainuddin; Syamsuddin Syamsuddin
Indonesian Interdisciplinary Journal of Sharia Economics (IIJSE) Vol 9 No 2 (2026): Sharia Economics
Publisher : Universitas KH. Abdul Chalim Mojokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31538/iijse.v9i2.10363

Abstract

This study aims to evaluate and improve the efficiency of the facility layout at PT Juyomi Sinar Labuan using the Systematic Layout Planning (SLP) method. The research employs a quantitative approach combined with limited qualitative analysis through field observations, measurements of material flow distances, cycle time calculations, and interviews with key personnel. The results indicate that the existing layout, although functionally aligned with the production sequence, still exhibits inefficiencies, as reflected in a total Load Distance of 302 meters and a material handling cycle time of 5.05 minutes. These inefficiencies are primarily caused by the recirculation flow between the 2 Deck Screen and the Kun Crusher, which creates a backtracking pattern and increases material movement distance. The application of the SLP method produces a more compact and structured layout without requiring major equipment relocation. The proposed layout reduces the Load Distance to 278 meters and the cycle time to 4.65 minutes, indicating improvements of approximately 8% and 7.9%, respectively. These findings demonstrate that optimizing material flow configuration can significantly improve operational efficiency, streamline workflow, and enhance production effectiveness. This study contributes to the limited literature on SLP application in open-space, heavy-equipment-based industries and provides practical recommendations for incremental layout improvement.
Market Reaction to the Announcement of the Government Fund Placement Policy in HIMBARA Banks: An Event Study Based on KMK Number 276 of 2025 Richaldito Koedio; Muhammad Yunus Kasim; Suryadi Samudra; Fatlina Zainuddin; Munawarah
Danadyaksa: Post Modern Economy Journal Vol. 4 No. 1 (2026): Post Modern Economy Journal
Publisher : Yayasan Pendidikan Islam Bustanul Ulum Mojokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69965/danadyaksa.v4i1.627

Abstract

This study aims to analyze the reaction of the Indonesian capital market to the announcement of the government fund placement policy in HIMBARA banking based on the Ministry of Finance Decree (KMK) Number 276 of 2025. The methodology used is quantitative with an event study approach, utilizing an observation window of 11 trading days (t-5 to t+5). The sample of this study was selected using a saturated sampling method, encompassing five banks from the HIMBARA group (BMRI, BBRI, BBNI, BBTN, and BRIS). Data analysis was conducted through the One-Sample T-Test, Wilcoxon Signed Rank Test, and Paired Samples T-Test with the assistance of SPSS version 32. The results indicate a significant daily abnormal return around the announcement, alongside a significant difference in the Average Abnormal Return (AAR), where market sentiment shifted from positive before the announcement to negative after the announcement. However, there was no significant difference found in the Average Trading Volume Activity (ATVA) before and after the announcement. Academically, the implication of this research proves that a short observation window captures spontaneous market reactions more accurately than a long observation window; practically, investors are advised not to panic sell their shares in response to policies deemed risky, as the price decline in HIMBARA banks proved to be only temporary.
Co-Authors Muhammad Yunus Kasim Munawarah Nur' Asia Richaldito Koedio Sulaeman Miru Suryadi Samudra Syamsuddin Syamsuddin Umar Syarifuddin