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Mas Ahmad Baihaqi
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Energy: Jurnal Ilmiah Ilmu-ilmu Teknik
Published by Universitas Panca Marga Probolinggo
ISSN : 20884591     EISSN : 29622565     DOI : https://doi.org/10.51747/energy.vol15no1
Core Subject : Science, Engineering,
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
Energy Journal serves as a platform for information and communication of various research findings and scientific writings in the field of engineering, contributed by practitioners, researchers, and academics who are involved in and have a keen interest in the development of science and technology. The scope of the Energy Journal covers all branches of engineering, including but not limited to: Electrical Engineering Mechanical Engineering Industrial Engineering Engineering Physics Chemical Engineering Materials and Metallurgical Engineering Environmental Engineering Mining Engineering Civil Engineering Architectural Engineering Computer Engineering Informatics Engineering Geodesy and Geomatics Engineering And other engineering disciplines not explicitly mentioned
Arjuna Subject : Energi (semua kategori) - Energi (Lain-Lain)
Articles 112 Documents
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Design Analysis of an Adjustable Road Bicycle Stem Based on Ergonomics and Biomechanics Armando Edo Anggriawan; Retno Widyaningrum
ENERGY: JURNAL ILMIAH ILMU-ILMU TEKNIK Vol. 16 No. 2 (2026): ENERGY: JURNAL ILMIAH ILMU-ILMU TEKNIK (July-November 2026 Edition)
Publisher : Universitas Panca Marga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51747/energy.v16i2.p459-473

Abstract

Road bicycles are designed to achieve aerodynamic efficiency through a forward-leaning riding posture. Although this position can improve cycling performance, it may also increase biomechanical loading and the risk of musculoskeletal complaints when it is not aligned with the rider’s anthropometric characteristics. The limited adjustability of conventional bicycle stems further restricts riders from achieving a more ergonomic riding position. This study investigated the ergonomic and biomechanical performance of an adjustable road bicycle stem developed to provide greater flexibility in handlebar positioning. A comparative experimental design was employed involving 30 road cyclists, with measurements conducted before using the standard stem and after using the adjustable stem prototype. Riding posture was assessed using motion capture to determine trunk flexion angle, while biomechanical loading was evaluated by calculating trunk moment. Ergonomic performance was assessed using the SNI 9011 questionnaire for musculoskeletal complaints. The adjustable stem increased the mean trunk flexion angle from 30.73° to 52.90° and reduced the average trunk moment from 193.94 Nm to 136.13 Nm. Participants also reported lower musculoskeletal complaint risk following use of the prototype. These findings suggest that the adjustable stem offers a more adaptable riding position and contributes to improved ergonomic performance by reducing biomechanical loading. The study provides evidence that incorporating ergonomic and biomechanical considerations into bicycle stem design can support the development of road bicycle components that better accommodate variations in rider characteristics.
Development of a Safety-Support Prototype for Artisanal Hookah Divers Susana Merary Romero Benitez; Retno Widyaningrum; Aqilah Gusti Nindira
ENERGY: JURNAL ILMIAH ILMU-ILMU TEKNIK Vol. 16 No. 2 (2026): ENERGY: JURNAL ILMIAH ILMU-ILMU TEKNIK (July-November 2026 Edition)
Publisher : Universitas Panca Marga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51747/energy.v16i2.p474-489

Abstract

Artisanal hookah divers in small-scale fisheries face significant occupational safety risks because they rely on surface-supplied compressors and long breathing-air hoses, while existing commercial dive computers are not designed for this operational context. This study aimed to develop a safety-support prototype tailored to the needs of artisanal hookah divers using a human-centred design approach. User needs were identified through preliminary field observations and supported by literature, safety standards, and technology benchmarking. These needs were translated into system requirements and prioritised using an evidence-weighted engineering design process to guide prototype development. The resulting prototype integrates a diver-mounted monitoring module, a surface monitoring and control unit, and a compressor-side flow-proxy module connected through a wired communication pathway. The analysis identified reliable wired communication between the diver and the surface unit as the highest engineering priority, and the prototype successfully implemented a functional manual surface-to-diver warning mechanism. This study contributes a context-specific prototype that reallocates safety-support functions between the diver and the surface operator, providing a practical design framework for improving occupational safety in artisanal hookah diving. Technical validation and field evaluation remain subjects for future research.

Page 12 of 12 | Total Record : 112

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