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All Journal Jurnal Pendidikan Teknologi dan Kejuruan Rekayasa Mesin JOIV : International Journal on Informatics Visualization INVOTEK: Jurnal Inovasi Vokasional dan Teknologi Jurnal Penelitian Pendidikan IPA (JPPIPA) JURNAL PENDIDIKAN TAMBUSAI JETL (Journal Of Education, Teaching and Learning) Jurnal Teknik Mesin Jurnal Teknologi Informasi dan Pendidikan JRTI (Jurnal Riset Tindakan Indonesia) Jurnal Vokasi MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Reswara: Jurnal Pengabdian Kepada Masyarakat Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat SELODANG MAYANG Teknomekanik Multicience International Journal of Multidisciplinary Research and Literature (IJOMRAL) Jurnal Vokasi Mekanika Journal of Social And Economics Research Journal of Community Service Tsaqofah: Jurnal Penelitian Guru Indonesia CONSEN: Indonesian Journal of Community Services and Engagement Jurnal Aplikasi IPTEK Indonesia Al-DYAS : Jurnal Inovasi dan Pengabdian kepada Masyarakat Journal of Engineering Researcher and Lecturer Ranah Research : Journal of Multidisciplinary Research and Development International Journal of Multidisciplinary Research of Higher Education (IJMURHICA) Journal of Innovative and Creativity IJIMCE : International Journal of Innovation in Mechanical Construction and Energy Venus: Jurnal Publikasi Rumpun Ilmu Teknik journal of social and economic research Jurnal Pendidikan MIPA IJIS Edu : Indonesian Journal of Integrated Science Education
Arwizet Arwizet, Arwizet
Departemen Teknik Mesin Universitas Negeri Padang
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Characterization Of Bioethanol From Cassava As A Fuel In Gasoline Engines Ihsan, Muhammad; Fernanda, Yolli; K, Arwizet; Kurniawan, Andre
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 4 (2025): Jurnal Vokasi Mekanika
Publisher : Departemen Teknik Mesin Fakultas Teknik Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v7i4.913

Abstract

The energy demand in Indonesia continues to increase, particularly in the transportation sector, which remains highly dependent on fossil fuels such as gasoline. This dependency causes several issues, including the depletion of fossil fuel reserves and the rise of greenhouse gas emissions that negatively impact the environment. One potential solution to address these challenges is the development of bioethanol as a renewable and environmentally friendly alternative fuel. Bioethanol can be produced from starchy materials, one of which is white cassava (Manihot esculenta), known for its high productivity and wide availability in Indonesia. The production process of bioethanol consists of several stages, including liquefaction, fermentation, and distillation, where fermentation temperature plays a crucial role in determining the ethanol yield. Previous studies have shown that variations in fermentation temperature significantly influence the efficiency of bioethanol production. This study aims to characterize bioethanol produced from cassava fermentation at various temperature variations and to evaluate its potential as a fuel for gasoline engines. The results are expected to contribute to the improvement of bioethanol production efficiency and to promote cassava utilization as a renewable energy source in supporting national energy sustainability.
Factors Contributing to the Success of Industrial Work Practice (PKL) Using PLS in a Vocational Mechanical Engineering Program Zamora, Jimmi; K, Arwizet; Waskito; Giatman
Jurnal Penelitian Pendidikan IPA Vol 11 No 11 (2025): November: In Progress
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i11.12435

Abstract

This study examines the factors that influence the success of Industrial Work Practice (PKL) implementation in the Mechanical Engineering Program at SMK Negeri 1 Sumatera Barat. Using a quantitative research design with Partial Least Squares (PLS), data were collected from 58 students who participated in the 2023 internship program. The research investigates the contribution of five variables: productive subjects, general subjects, curriculum alignment, school mentoring, and industrial mentoring. The findings show that productive subjects have the strongest influence on PKL success, followed by school mentoring and industrial mentoring. In contrast, general subjects and curriculum alignment do not demonstrate a significant effect. These results highlight the crucial role of technical competence and consistent guidance in ensuring effective internship experiences. The study emphasizes the need for stronger collaboration between schools and industry to enhance the relevance of vocational learning. It also suggests aligning instructional practices with workplace expectations to better prepare students for real industrial environments. Overall, this research provides empirical evidence that reinforces the importance of practical skills and structured mentoring in improving internship outcomes within vocational education.
Prediksi Beban Turbin Uap Menggunakan Machine Learning Berbasis Random Forest untuk Optimalisasi Efisiensi Turbin Uap Pada PLTU Ombilin Alfarizi, Diki; Arwizet, Arwizet; Refdinal, Refdinal; Primawati, Primawati
Journal of Innovative and Creativity Vol. 5 No. 3 (2025)
Publisher : Fakultas Ilmu Pendidikan Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joecy.v5i3.2880

Abstract

Penelitian ini mengembangkan model prediktif untuk estimasi beban turbin uap dengan mengimplementasikan teknik machine learning Random Forest dalam rangka optimasi efisiensi operasional turbin uap pada fasilitas PLTU Ombilin. Proses penelitian melibatkan akuisisi data operasional historis yang kemudian melalui tahap preprocessing menggunakan normalisasi Min-Max Scaler dan pembagian dataset dengan rasio 80:20 untuk training dan testing. Optimasi model Random Forest dilakukan melalui hyperparameter tuning untuk memperoleh konfigurasi optimal, menghasilkan performa dengan MAE 1.024, RMSE 0.987, dan R-squared 0.893 pada evaluasi testing. Hasil evaluasi mengindikasikan kemampuan model dalam menghasilkan prediksi akurat dengan generalisasi yang memadai terhadap data baru. Implementasi model ini diproyeksikan dapat berfungsi sebagai tool decision support dalam manajemen operasional pembangkit, meningkatkan thermal efficiency turbin uap, dan mendukung reduksi konsumsi fuel serta emisi greenhouse gas. Riset ini merekomendasikan eksplorasi algoritma komplementer seperti Gradient Boosting, XGBoost, dan Artificial Neural Network untuk benchmarking performa dan validasi model yang lebih komprehensif.
Co-Authors - Primawati -, Nasrullah - A, Esa Hafizul A, Yufrizal Abadi, Zainal Abadi Abbas, Muhammad Rabiu Abd. Aziz Abd. Aziz Abdul Aziz Ade Habibbullah Adriansyah Adriansyah Aggrivina Dwiharzandis Agia Kulkarni Preti Agusriza Almalik Agustian, Rizki Ahmad Arif Ahmad Arif Ahmad Natafian Fauzi Ahmad, Salamuddin Ahmed, Shabir Akbar, Yaumil Akhmad Rais Aldi Alfarizi Alfarizi, Aldi Alfarizi, Diki Alvien Khardin Ambiyar, Ambiyar Amir, Irfan Ananda, Opi Andika Putra ANDIKA SAPUTRA Andre Kurniawan Andre Kurniawan Andre Kurniawan Anjelika, Dea Qori Anuar, Bakri Anugrah, Pinto Aprianti, Maidinda Arafat, Andri Arafat, Andril Arham, Veri Budiawan Ariyanto, Dedi Aryasandy, Nensy Asep Bunyamin Azmil Azman Bayu Rianto Berliansyah, Aqilvin Berry Delfi Andra Budi Syahri Bulkia Rahim Bunyamin, Asep Butar, David Beckham Butar Chrismondari, Chrismondari Daniel Fifaldi Nardo Darmawi . Delima Yanti Sari Denisa Putri Jadenis Desmarita Leni Deviya Aprilman Dionova, Aldi Dodi Ariska Doni Saputra Dori Yuvenda Efendi, Defindo Efriwan Efriwan Eko Indrawan Endri Rizki Anugrah Erdi, Putri Nurhalimah Erizon, Nelvi Erlanda, Rendi Fachrur Rozi Fachry Novrianda Fahrendra, Aqsal Faisal, Afdal Fajri Ramadhan Fakhrur Rozi, Fakhrur Febri Prasetya Fiqi Gusti Irawan Firman Omni Saputra Fitrah Qalbina Giatman Giatman, M Gito Okto Rito FM Gusta Nanda Habibbullah, Ade Hadi, Farhan Hafiz Alfadri Ramadhan Handepi, Nogi Haris Haris Haris Haris, Haris Hasan Maksum Hasanuddin Hasanuddin Hasanuddin WS Helga Yermadona Hendra Hendra Hendra, Carlen Muhammad Hendri Nurdin Idra Putra Irfan Amir Irfan, Abdillah Irma Yulia Basri Irzal Irzal Jalil, Muhammad Jasman Jasman Jasman Jasman Jasman Junil Adri Kandena Putra, Tegar Khairuni Delfi Anisa Krismadinata Krismadinata Krismadinata Krismadinata Krismadinata Krismadinata, Krismadinata kusuma, Yuda Perdana M. Agus Trian Putra M.Y. Setiawan Maresta, Felia Martias Martias Miftahul Arrafi Monica, Okzalia Muchlisinalahuddi Muchlisinalahuddi Muhammad Akbar Muhammad Akhbar Muhammad Anwar Muhammad Aulia Ifsan Muhammad Ihsan Muhammad Lathif Mahendra Muhammad, Maghfiridhani Muharir Muharir Muharni, Riza Mulianti Mulyanti Muslim Muslim Nabawi, Rahmat Azis Nadia Utari Nasution, Ridhollah Nelvi Erizon Nidya Meliza Putri Nizwardi Jalinus Nofri Helmi Nofri Helmi Helmi Nugraha, Ikhsan Dani Nurdin Hendri Nurfajri Nurfajri Nurfajri Nurfajri, Nurfajri Nuzul Hidayat, Nuzul Okky Syaifatul, Achmad Oky Erlangga Oky Erlangga Okzama, Rebi OSKAH DAKHI Ovi Marendah Pasaribu, Reynaldy Peng, Lim Hooi Prasetya, Kresna Adi Prasetyo, Vicky Pratama, Arief Juneirul Primawati Primawati Primawati Primawati, Primawati Purnama, Andreadi Purwantono Purwantono Purwantono purwantono purwantono Purwantono, Purwantono Putra, Idra Putra, Rido Putri Nurhalimah Erdi Putri, Prima Yane Rahmad Robby Alzam Rahmat Afdhol Rahmat Syukri Ramfit Novari Randhy Alfarishi Rebi Okzama Refdinal Refdinal Refdinal Refdinal, Refdinal Refdinal, Refdinal Remon Lapisa Remon Lapisa Remon Lapisa Remon Lapisa Rifelino Rifelino Rio Ramadhan Rivanol Chadry Rizka Rizka Rizka Rizka, Rizka Rizki Ramadhan Nasution, Muhammad Rizky Ema Wulansari Robby, Muhammad Robert, Julio Rozandi, Azel Ruzita Sumiati Said Fuad Amry Salamuddin Ahmad Sari, Fretina Seprianto, Ekon Setiawan, Sepdirama Sharma, Jai Kumar Sihombing, Ahmad Rifai Simon, Ryan Ananda Soretire Lanrewaju Kamorudeen Sri Rizki Putri Primandari Steven Thomas Anggriyanto Sukardi Sukardi Supardi Supardi Suparno Suparno Suparno Suparno Suparno Syah, Muhammad Rayhan Syukri, Rahmat Tamasya, Fido Delfri Toto Sugiarto Totoh Andayono Usin Usin Usmeldi Usmeldi Wahyu Ananda Putra Wahyudi Fachrul Syafra Wakhinuddin WAKHINUDDIN SIMATUPANG Wanda Afnison Waskito Waskito Waskito Waskito Waskito, Waskito Winaldi Alfonis Wulansari, Rizky Ema Yandra, Muvi Yanriko, Armizal Yanto, Doni Tri Putra Yazmendra Rosa Yoga Novrialdy Yolli Fernanda Yovindra, Difa Yufrizal A Yufrizal Yufrizal Yufrizal Yufrizal Yulira Emputri Yurika Putri Zainal Abadi Zainal Abdi Zamora, Jimmi