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This Author published in this journals
All Journal Food Science and Technology Journal (Foodscitech) Jurnal Industri dan Inovasi (INVASI) Industrial & System Engineering Journals (ISEJOU)
Bambang Sutejo
Universitas W R SUpratman
Agriculture, Biological Sciences & Forestry Control & Systems Engineering Decision Sciences, Operations Research & Management Engineering Environmental Science Industrial & Manufacturing Engineering Transportation

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Perbaikan Postur Kerja Pegawai Lepas Perusahaan Provider Menggunakan Metode RULA Moh Ainul Fais; Ryan Adi Pratama; Dedy Kunhadi; Bambang Sutejo; Silvana Mohamad; LM Fandy Prayogo
Jurnal Industri dan Inovasi (INVASI) Vol 2, No 2 (2024): September
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64670/invasi.v2i1.9952

Abstract

The modern era has made freelance workers a trend, freelance employees work individually from their workplace. Freelance employees provide the freedom to choose the work they want without being tied to a contract, but in practice, freelance workers are very unfulfilled, such as in the health sector and field facilities. PT. X, which is a well-known provider company in Indonesia, has problems with employees who often experience complaints such as body aches, sprains and minor injuries after work. Improving work posture is very necessary to help freelance employees feel comfortable working, so it is necessary to analyze work posture using the Rapid Upper Limb Assessment (RULA) method. The research results show that action level 4 is obtained which requires the company to immediately carry out inspections and changes (right now). The proposed improvement in this research is that there is a need to improve work methods or systems (SOP) when carrying out the cable planting fireplace process and provide complete work facilities.
Ergonomi Kognitif dalam Sistem Kerja dan Interaksi Manusia-Teknologi: Systematic Literature Review tentang Penerapan, Pengukuran, dan Luaran Silvana Mohamad; Moh. Ainul Fais; Dedy Kunhadi; Bambang Sutejo; Djaffar Sodiq; Novid Hidayat; Mohamad Tsaqif Apta Laksono
Industrial & System Engineering Journals (ISEJOU) Vol. 4 No. 2 (2026): ISEJOU, Vol 4, No 2 Juni 2026
Publisher : Universitas Katolik Darma Cendika

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Abstract

Digital work-system transformation intensifies human-technology interaction and creates a need to understand how cognitive ergonomics is applied, measured, and associated with human and system outcomes. This study maps cognitive ergonomics applications, mental-workload measurement approaches, and their relationships with performance, safety, usability, technology acceptance, and worker well-being. A systematic literature review was conducted on 52 full-text journal articles published from 2020 to 2026. Articles were selected through deduplication, multistage screening, DOI verification, quality appraisal, and extraction of 29 variables. The findings identify five application mechanisms: task and interface redesign, human-technology function allocation, cognitive-state monitoring, decision support and training, and integration into work systems. Measurement approaches include subjective ratings, performance measures, behavioral indicators, physiological and neurophysiological signals, task analysis, and multimodal assessment. Associations with outcomes are conditional because they vary according to task complexity, experience, age, duration, technology transparency, and environmental conditions. The review proposes a three-layer application-measurement-outcome framework in which workload functions as a linking mechanism and a source of feedback for redesign. The findings support multi-indicator evaluation, field validation, and designs that preserve cognitive fit, predictability, control, situation awareness, and recovery.
Hot-Air Drying of Coconut Meat in a Modified Tray Dryer Didik Purwanto; Bambang Sutejo; Dedy Kunhadi; Moh. Ainul Fais
Food Science and Technology Journal (Foodscitech) Vol. 9 No. 1 (2026)
Publisher : Universitas Dr Soetomo

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Abstract

This study quantified the effects of coconut-meat slice dimension, hot-air velocity, and drying time on moisture reduction in a modified tray dryer. Mature coconut meat was cut to a constant thickness of 1.2 cm with planar dimensions of 2 × 2, 3 × 3, 4 × 4, 5 × 5, or 6 × 6 cm. A completely randomized 5 × 2 × 4 factorial design was used at 55 °C, with air-velocity setpoints of 5 and 30 m/s and drying times of 2, 4, 6, and 8 h. Each treatment comprised three independent tray runs, and each run was analyzed in triplicate. Initial moisture content was 51.35 ± 0.25% wet basis. Three-way factorial ANOVA showed significant main effects of slice dimension, air velocity, and drying time (p < 0.001). Dimension × velocity (p = 0.049) and velocity × time (p = 0.008) interactions were also significant, whereas the three-way interaction was not (p = 0.743). The highest observed moisture reduction, 30.91 ± 0.16%, occurred in 1.2 × 2 × 2 cm slices dried at the 30 m/s setpoint for 8 h, corresponding to 35.48 ± 0.24% final moisture. The results demonstrate statistically distinct effects of geometry, airflow, and exposure time, but the final moisture remained too high for a finished desiccated-coconut claim. Additional drying and quality measurements are therefore required.
Co-Authors Dedy Kunhadi Dedy Kunhadi Didik Purwanto Djaffar Sodiq LM Fandy Prayogo Moh. Ainul Fais Mohamad Tsaqif Apta Laksono Novid Hidayat Ryan Adi Pratama Silvana Mohamad