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Power Efficiency Evaluation of Low-Cost IoT Repeater in Indoor Wireless Networks: Politeknik Aceh Selatan Campus Case Study Erwinsyah Sipahutar; Alfi Hafizh; Rial Fauza; Rudi Arif Candra
Global Advances in Science, Engineering & Technology (GASET) Vol. 1 No. 2 (2025): Global Advances in Science, Engineering & Technology (GASET), Article Research
Publisher : Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/gaset.v1i2.252

Abstract

Low-cost Wi-Fi repeaters are increasingly deployed in smart campus environments to enhance indoor wireless coverage; however, their energy performance under realistic traffic conditions remains insufficiently quantified. This paper presents a comprehensive experimental evaluation of the power efficiency of an ESP8266-based IoT repeater operating in simultaneous Access Point and Station (AP+STA) mode over IEEE 802.11n (2.4 GHz). Unlike prior studies focusing primarily on protocol-level optimization or simulation-based relay models, this work provides hardware-level, real-time power characterization under controlled multi-client traffic scenarios. Experimental measurements demonstrate that average power consumption increases from 0.26 W (78 mA) in idle mode to 0.60 W (182 mA) with a single active client and up to 0.87 W (264 mA) under five-client high-load conditions. The maximum observed throughput reaches 18.4 Mbps, while energy per transmitted bit degrades from 0.032 µJ/bit to 0.047 µJ/bit as traffic intensity increases, revealing a measurable efficiency loss due to simultaneous packet reception and retransmission. A near-linear correlation (R² > 0.94) between traffic load and power consumption is identified, enabling the derivation of an empirical energy–performance model. The findings provide quantitative insight into the trade-off between coverage extension and energy demand in low-cost IoT repeaters. The proposed evaluation framework and empirical model support energy-aware deployment strategies for smart campus 
Penggunaan Teknologi Imersif dalam Pendidikan Vokasional: Suatu Kajian Bibliometrik Ulfa Dyah Amini; Farthur Ahkyat; V. Lilik Hariyanto; Rial Fauza
VOCATECH: Vocational Education and Technology Journal Vol 7, No 2 (2025): December
Publisher : Akademi Komunitas Negeri Aceh Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38038/vocatech.v7i2.270

Abstract

 AbstrakStudi ini melakukan analisis bibliometrik untuk menelaah perkembangan publikasi mengenai penggunaan teknologi imersif dalam pendidikan vokasional. Tujuan penelitian adalah memetakan distribusi publikasi ilmiah, menemukan penulis paling produktif, meninjau pola kolaborasi penulisan, serta mengkaji pola sitasi. Data dikumpulkan dari basis data Scopus dengan kata kunci “teknologi imersif”, “virtual reality”, “augmented reality”, “pendidikan vokasional”, serta istilah lain yang relevan. Seluruh hasil pencarian diseleksi untuk menjamin kesesuaian dengan topik, kemudian dianalisis menggunakan R Studio. Hasil pencarian menghasilkan 265 publikasi yang diterbitkan antara tahun 2018 hingga Oktober 2025. Analisis menunjukkan bahwa penggunaan teknologi imersif dalam pendidikan vokasional semakin meluas dan memberikan dampak signifikan terhadap perkembangannya. Dari sisi sumber publikasi, Applied Sciences (Switzerland) menempati posisi utama dengan kontribusi dua belas artikel. Sementara itu, German muncul sebagai negara paling produktif sekaligus paling berpengaruh dengan 33 artikel dan total 238 sitasi, diikuti oleh UK. Temuan ini memberikan wawasan bagi peneliti yang perhatian pada pendidikan vokasional, karena mampu menunjukkan tren, arah perkembangan dan potensi kontribusi teknologi imersif dalam bidang tersebut. memberikan dasar praktis bagi pendidik dan pembuat kebijakan untuk menentukan strategi implementasi teknologi imersif yang lebih tepat guna dengan mengidentifikasi tren, tema utama, dan area riset yang perlu dikembangkan dalam pendidikan vokasional. Temuan ini dapat digunakan untuk merencanakan kurikulum, pelatihan, dan investasi teknologi secara lebih terarah sesuai kebutuhan tiap jenjang pendidikan vokasional.Kata Kunci: Teknologi imersif, Virtual Reality, Augmenten Reality, Pendidikan Vokasional, Analisis BibliometrikAbstractThis study conducts a bibliometric analysis to examine the development of publications on the use of immersive technology in vocational education. The aim of the research is to map the distribution of scientific publications, identify the most productive authors, review patterns of authorship collaboration, and analyze citation trends. Data were collected from the Scopus database using the keywords “immersive technology,” “virtual reality,” “augmented reality,” “vocational education,” as well as other related terms. All search results were screened to ensure their relevance to the topic, and the data were then analyzed using R Studio. The search yielded 265 publications published between 2018 and October 2025. The analysis indicates that the use of immersive technology in vocational education is expanding and has made a significant impact on its development. In terms of publication sources, Applied Sciences (Switzerland) ranked as the leading journal with twelve contributions. Meanwhile, Germany emerged as the most productive and influential country, contributing thirty-three articles with a total of 238 citations, followed by the United Kingdom. These findings provide insights for researchers focused on vocational education, highlighting trends, development directions, and the potential contributions of immersive technology in the field. They also provide a practical basis for educators and policymakers to determine more effective strategies for implementing immersive technology by identifying trends, key themes, and research areas for development in vocational education. These findings can be used to plan curricula, training, and technology investments more effectively, tailored to the needs of each level of vocational education.Keywords: Immersive Technology, Virtual Reality, Augmented Reality, Vocational Education, Bibliometric Analysis