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All Journal MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Jurnal Manajemen dan Teknologi Rekayasa
Hery Irwan
Department of Industrial Engineering, Universitas Riau Kepulauan
Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Evaluation of Hybrid Classroom Implementation in Room A101 Ilham Alifudin; Hery Irwan
JUMANTARA: Jurnal Manajemen dan Teknologi Rekayasa Vol 5, No 1 (2026): Januari
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/jumantara.v5i1.3494

Abstract

The rapid development of information and communication technology (ICT) has accelerated the adoption of blended learning in higher education, combining traditional classroom instruction with online participation. To support this approach, universities require hybrid classroom systems that allow synchronous interaction between on-site and remote students. This study presents the design and implementation of a hybrid classroom in Room A101 using affordable and easily accessible devices. The system was built with a webcam connected to a mini PC and monitor, a wireless clip-on microphone integrated with the lecturer’s laptop, a projector supported by an HDMI switcher, and a stable internet connection. Implementation followed five stages: needs analysis, system design, installation, workflow, and evaluation. Technical testing covered video, audio, speaker performance, and internet stability, while user surveys captured perceptions of effectiveness. Results showed the system delivered acceptable 720p video, clear audio, and stable connectivity. Survey feedback indicated satisfaction levels of 82% for video, 88% for audio, 75% for speaker performance, and 84% overall. These findings confirm that low-cost hybrid classroom solutions can enhance flexibility, inclusivity, and accessibility in higher education, while remaining practical and replicable in similar institutional contexts.
Task-Level Mapping of Electrical and Oil-Handling Risks during Transformer Oil Purification: A Job Safety Analysis at PT PLN Batam Nanda Putri Utami; Hery Irwan
MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Vol 8 No 2 (2026): Motivection : Journal of Mechanical, Electrical and Industrial Engineering
Publisher : Indonesian Mechanical Electrical and Industrial Research Society (IMEIRS)

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Abstract

Transformer oil purification combines electrical isolation, auxiliary power, pressurized oil transfer, dielectric testing, and recommissioning, creating interconnected electrical and oil-handling hazards. This study mapped task-level risks and specified stage-specific controls for the purification workflow at PT PLN Batam using Job Safety Analysis. A single-site case study examined ten stages through observation, 30 maintenance interviews, and operational safety-document review. Hazards were classified retrospectively using a 5 × 5 likelihood–severity matrix. Seven stages were rated high risk and three medium risk. Purification-unit connection received the highest score (15) because electrical and oil-transfer interfaces converge at this stage. Proposed controls emphasize verified isolation, lockout/tagout, competent authorization, pressure-rated connections, containment, spill readiness, and independent restoration checks. Under assumed full implementation and verification, the profile is projected to shift to seven medium-risk and three low-risk stages. The study provides a transparent task-level control map while distinguishing projected residual risk from measured outcomes.
Co-Authors Ilham Alifudin Nanda Putri Utami