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All Journal Jurnal Optimasi Sistem Industri Jurnal Ergonomi dan K3 SPEKTA (Jurnal Pengabdian Kepada Masyarakat : Teknologi dan Aplikasi)
Rifko Rahmat Kurnianto
Institut Teknologi Bandung
Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health

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Telaah Manajemen Risiko pada FSRU X di Indonesia Berdasarkan Standar Bureau Veritas NR 645 Rifko Rahmat Kurnianto; Milly Rostika Putri; Gradiyan Budi Pratama
Jurnal Ergonomi dan K3 Vol 5, No 2 (2020): SEPTEMBER 2020
Publisher : Perhimpunan Ergonomi Indonesia

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Abstract

Analisis keselamatan dilakukan pada sistem regasifikasi LNG salah satu FSRU di Indonesia untuk menentukan konformitasnya terhadap standar NR 645. Teknik HAZOP digunakan untuk menemukan 161 kemungkinan deviasi pada sistem tersebut. Frekuensi deviasi dihitung menggunakan data dari OREDA dan konsekuensi deviasi dihitung berdasarkan API RBI 581. Diperoleh tingkat risiko FSRU tersebut adalah medium hingga medium high. Ditelaah juga konformitas sistem CAMS serta ESD FSRU tersebut terhadap standar NR 645 dan diberikan beberapa rekomendasi untuk mengelola risiko yang ada.
Empowering Disability Communities through Inclusive Transfemoral Prosthesis Co-Design with a Local SME in Indonesia Muslim, Khoirul; Nuryamsi, Dias; Kurnianto, Rifko Rahmat; Mihradi, Sandro
SPEKTA (Jurnal Pengabdian Kepada Masyarakat : Teknologi dan Aplikasi) Vol. 6 No. 1 (2025)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/spekta.v6i1.13091

Abstract

Background: Lower-limb loss poses significant challenges to mobility, employability, and social participation for many individuals in low- and middle-income countries. In Indonesia, the high cost of imported prosthetics has prompted community-based small enterprises to produce low-cost transfemoral devices. Contribution: This study contributes to support a local prosthetics workshop (Independent Disabled Creativity Foundation/IDCF) by integrating user feedback and basic functional assessments to guide improvements to a transfemoral prosthesis prototype. Method: Seven transfemoral amputees completed the Locomotor Ability Index (LCI), then performed standing, walking, and stair climbing tasks assessed by the Amputee Mobility Predictor with Prosthesis (AMPPRO), Rating of Perceived Discomfort (RPD) questionnaire, and Post-test Interview with improvement concepts using the SCAMPER (Substitute, Combine, Adapt, Modify, Put to Other uses, Eliminate, Rearrange) creativity method. Results: Participants achieved independent ambulation (mean LCI = 51.00 ± 5.10; AMPPRO = 42.29 ± 3.15, K3–K4 classification). Common discomfort was reported in the amputated thigh, sound-side thigh, and ankle. Design adjustments were collaboratively proposed, including socket fit improvement, knee joint reinforcement, and coupler alignment. Conclusion: This study highlights the value of structured user feedback in guiding local prosthetic refinement. It demonstrates how participatory methods can support inclusive design and technical strengthening for community-based production.
Enhancing Above-Knee Prosthetic Design for Inclusive Workplaces: Ergonomic Considerations in Manual Material Handling Khoirul Muslim; Adinda Shafira; Rifko Rahmat Kurnianto; Sandro Mihardi; Auditya Purwandini Sutarto
Jurnal Optimasi Sistem Industri Vol. 24 No. 1 (2025): Published in June 2025
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v24.n1.p102-120.2025

Abstract

Employment is crucial for economic sustainability and social inclusion, yet individuals with disabilities face significant barriers. Globally, only 44% of disabled individuals are employed compared to 75% of those without disabilities. Manual material handling (MMH) relies heavily on stability and control in demanding industries such as manufacturing and logistics. Such demands create challenges for individuals with above-knee prostheses, as most current designs focus on walking and do not adequately support the postural and load-bearing requirements of MMH tasks. This study aims to evaluate the performance of transfemoral prosthesis designs during MMH, analyzing the effects of container type, load mass, and their interaction on gait efficiency, discomfort, and stability. Eight male unilateral above-knee amputees (24–39 y) carried handled and handle-less boxes loaded from 4 to 10 kg in a randomised within-subject trial. Gait deviation, perceived discomfort, and steadiness were captured with self-report measures. Two-way analysis of variance analyses showed a significant container × load interaction: handle-less 10 kg loads produced the greatest lateral trunk lean toward the prosthetic side, whereas lighter handled loads minimised deviation. Increasing load also elevated discomfort in the back, waist, stump and contralateral arm and reduced perceived stability. Observed lateral lean and impact-related knee extension suggest three priority modifications: (1) add socket adduction within an ischial-containment design to improve femoral stabilisation, (2) increase knee-swing friction to soften terminal impact, and (3) fit dual-keel feet to cushion heel strike. Implementing these changes may reduce gait errors and fatigue, raising safe lifting capacity for transfemoral prosthesis users in MMH task. Nonetheless, the male-only sample may not capture gender-specificgait strategies; future trials should include female participants and a larger cohort to verify generalisability. These preliminary findings still offer insights into improving prosthetic designs to enhance safety, functionality, and inclusion in industrial MMH tasks.
Acceptance and Satisfaction of Food Waste Mobile Application in a Developing Country: Insights from Extended UTAUT2 and IPMA Ari Widyanti; Mutiara Anberty Paro Uli; Rifko Rahmat Kurnianto
Jurnal Optimasi Sistem Industri Vol. 24 No. 2 (2025): Published in December 2025
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v24.n2.p255-269.2025

Abstract

Food waste is a major global problem and has prompted the development of digital solutions such as food waste mobile applications (FWMA). However, factors influencing the user adoption of these applications, especially in developing countries, remain unexplored. The purpose of this study is to analyze existing behavior towards FWMA and modeling factors that influence acceptance of FWMA in the developing country - Indonesia, while also observing efforts to improve its effectiveness and user satisfaction. To achieve this, an acceptance model is developed using the Extended Unified Acceptance and Use Theory 2 (UTAUT2 Extended) model. Moreover, the Importance-Performance Matrix Analysis (IPMA) framework is used to identify areas for improvement and prioritize efforts to increase customer satisfaction in the application of the FWMA. A preliminary sample of 79 respondents completed an online questionnaire consisting of 30 questions and using a five-point Likert scale with anchor values of strongly agree and strongly disagree. The results show that the average frequency of purchases made by respondents via the FWMA system is relatively low, i.e., three or less per month, and that the majority of respondents learnt about the FWMA system from social media and their friends. As far as demographic data is concerned, women are more likely to use the FWMA than men. In particular, according to the UTAUT2 Extended Model, factors influencing satisfaction with the use of FWMA include social influence, habit and trust; furthermore, satisfaction and different food choices influence the intention to use the use of FWMA. Finally, the IPMA results reinforce the focus on increasing satisfaction through diversified food choices by providing a framework for developers and policy makers to support the uptake of the FWMA in developing economies by building trust, promoting habits and strategically increasing food diversity.
Co-Authors Adinda Shafira Ari Widyanti Auditya Purwandini Sutarto Khoirul Muslim Milly Rostika Putri Muslim, Khoirul Mutiara Anberty Paro Uli Nuryamsi, Dias Pratama, Gradiyan Budi Raden Muhammad Mihradi Sandro Mihardi