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All Journal Jurnal Sistem Teknik Industri Jurnal Tiyasadarma: Jurnal Pengabdian Kepada Masyarakat
Dimas Akmarul Putera
Unknown Affiliation
Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Engineering Environmental Science Industrial & Manufacturing Engineering

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Seminar “Architecture, Photography and Preservation Ofcities” pada Peserta The English Access Microscholarship Program (Access) Vitka Learning Center (VLC) Muhammad Adi Sukma Nalendra; Dimas Akmarul Putera; Ria Sapitri; Dany Kurnia Gunawan; Zhilla Zhalila Qurrata A’yun; Tommy Andrea Gunawan; Jihan Nur Annisa
Jurnal Tiyasadarma Vol. 4 No. 1 (2026): Juli 2026 | Jurnal Tiyasadarma
Publisher : LPPM ITEBA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62375/48hdmt90

Abstract

Batam City is undergoing rapid urban development, which poses challenges to the preservation of architecture and the urban environment, while young people’s awareness of the historical and cultural value of city buildings remains low. This community service activity aimed to improve the understanding of participants of The English Access Microscholarship Program (ACCESS) at Vitka Learning Center (VLC) regarding the relationship between architecture, photography, and city preservation, while integrating it with learning to write descriptive texts in English. The methods used were community education through a seminar, basic photo-essay training, and field photography practice followed by narrative composition. Data were collected through observation, activity documentation, assessment of all participant works by two raters using a four-aspect rubric on a 1–4 scale, and a retrospective post-then-pre questionnaire completed by all 20 participants and analysed using the Wilcoxon signed-rank test. The seminar was held on 21 April 2025 at ACCESS VLC Batam and was attended by 20 participants. Rubric assessment of 20 works yielded a mean of 3.24 out of 4.00 (SD = 0.30), with 25% rated very good and 75% rated good. Relevance to the preservation theme scored highest (3.27), while narrative coherence of the photo sequence scored lowest (3.17). Self-rated scores rose from 1.79 to 4.21 on a 5-point scale (W = 0; z = −3.92; p < .001; r = 0.88), although these figures should be read as participant perception given the risk of inflation bias. Comparing both instruments revealed a divergence: the aspect participants perceived as most improved scored lowest in the work assessment. The output was participants’ photo-essay works that can be developed into a photo-essay book as a public education medium.
Improving Crude Palm Oil Quality in Storage Tanks through PDCA-Based Control of Free Fatty Acids and Moisture Content Tania Alda; Diana Carolina Sitohang; Dimas Akmarul Putera
Jurnal Sistem Teknik Industri Vol. 28 No. 4 (2026): JSTI Volume 28 Number 4 October 2026
Publisher : TALENTA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsti.v28i4.25547

Abstract

Maintaining CPO quality during storage is essential because elevated FFA and MC levels can reduce product quality, storage stability, and market value. This study investigates the levels of Free Fatty Acids (FFA) and Moisture Content (MC) in storage tanks and their impact on CPO quality using the PDCA framework supported by p-control charts and Fishbone Diagram analysis. The study aims to identify the factors affecting CPO quality and to formulate appropriate improvement strategies. Data on FFA and MC were obtained from the monthly laboratory reports of the mill and analyzed using p-control charts and Fishbone Diagrams. The results showed that 54 FFA samples and 71 MC samples exceeded the company’s established quality standards, indicating that moisture content was the dominant quality issue. The p-control chart analysis revealed that the storage process was statistically out of control, reflecting significant process variation during storage operations. Furthermore, the Fishbone Diagram identified several contributing factors related to human, material, machine, and method aspects, including operator inattentiveness, inadequate handling of Fresh Fruit Bunches, improper sorting processes, insufficient equipment maintenance, and suboptimal vacuum dryer pressure control procedures. Several corrective actions were proposed, including strengthening operator supervision, implementing a FIFO system for FFB handling, establishing clearer quality standards, enhancing equipment maintenance practices, and optimizing vacuum dryer operating procedures. The proposed corrective actions are expected to reduce non-conforming FFA and MC samples, improve process stability, and strengthen compliance with established quality standards.
Co-Authors Diana Carolina Sitohang Gunawan, Dany Kurnia Jihan Nur Annisa Nalendra, Muhammad Adi Sukma Ria Sapitri Tania Alda Tommy Andrea Gunawan Zhilla Zhalila Qurrata A’yun