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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) Jurnal Edukasi Elektro JPTK: Jurnal Pendidikan Teknologi dan Kejuruan INOTEKS : Jurnal Inovasi Ilmu Pengetahuan, Teknologi, dan Seni INVOTEC Jurnal Penelitian Pendidikan IPA (JPPIPA) Journal of Engineering and Applied Technology Journal of Renewable Energy, Electrical, and Computer Engineering Journal of Community Empowerment
Rustam Asnawi
Universitas Negeri Yogyakarta
Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Other

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A Challenge of Vocational Education for Preparing Green Employment Asnawi, Rustam; Djatmiko, I
INVOTEC Vol 11, No 2 (2015)
Publisher : Faculty of Technological and Vocational Education-Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/invotec.v11i2.2149

Abstract

Currently the vocational education has been oriented to the educational processes in which focusing on the development of the student in order to ready to work professionally and ready to improve their self-potential in particular field work. Meanwhile, today and future jobs in various business sectors and industry are still growing and developing towards green jobs. If there is no counter and solution for this growth of green jobs, then it would create a new gap between the output’s competencies of vocational education and the qualification that needed by various business sector and industry. After studying some latest literatures, it was found that there is no any explicitly and concretely both concept and definition of green jobs in the vocational education curriculum (Curriculum 2013). Thus, this paper presents the urgent and such a challenge to change the philosophy of vocational education towards green jobs and ecology oriented.
PENGEMBANGAN ALAT BANTU PENYUSUNAN DAN BIMBINGAN KARYA ILMIAH DENGAN MODEL SKILL TREE Fanani Arief Ghozali; Muchlas Muchlas; Rustam Asnawi; Rio Tirto Sudarma; Dwi Feriyanto
Jurnal Edukasi Elektro Vol 5, No 1 (2021): Jurnal Edukasi Elektro, Volume 5, Nomor 1, 2021
Publisher : JPTE FT UNY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jee.v5i1.38731

Abstract

ABSTRACT:This study aims to: (1) produce a product in the form of an android application as a tool for the preparation of scientific papers using the skill tree model; (2) knowing the results of the software performance that using the skill tree model. This research is development research with a combined method of the waterfall method and Dick and Carey. This study focuses on software functionality so that testing is carried out by software quality control. Research data obtained through observation, interviews, a document study, and questionnaires. The results of this study are: (1) the product is developed by applying the skill tree model in an android application designed using Android Studio; (2) the test results by quality control, seen from the aspects of functionality, reliability, efficiency, maintainability, and portability, obtained a percentage of 76.9% (Very Good) for supervisor and 77.8% (Very Good) for teacher applications.ABSTRAK:Penelitian ini bertujuan untuk: (1) menghasilkan produk berupa aplikasi android sebagai alat bantu penyusunan karya ilmiah dengan model skill tree; (2) mengetahui hasil unjuk kerja software yang menggunakan model skill tree. Penelitian ini merupakan penelitian pengembangan dengan metode gabungan antara metode waterfall dan Dick and Carey. Penelitian ini memberikan fokus pada fungsionalitas perangkat lunak sehingga pengujian dilakukan oleh quality control perangkat lunak. Data penelitian diperoleh melalui observasi, wawancara, studi dokumen, dan angket. Hasil penelitian ini adalah sebagai berikut: (1) produk dikembangkan dengan menerapkan model skill tree dalam aplikasi android yang dirancang menggunakan Android Studio; (2) hasil pengujian oleh quality control dilihat dari aspek functionality, reliability, efficiency, maintainability, dan portability didapat persentase 76,9% (Sangat Baik) untuk pembimbing dan 77,8% (Sangat Baik) untuk aplikasi guru.
Designing a Skill Tree Model for Learning Media Fanani Arief Ghozali; Rustam Asnawi; M Khairudin; Mentari P Jati; Ahmad Hoirul
Jurnal Pendidikan Teknologi dan Kejuruan Vol 25, No 1 (2019): (May)
Publisher : Faculty of Engineering, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (425.135 KB) | DOI: 10.21831/jptk.v25i1.20234

Abstract

In a modern era, digital media has been created and used for educational purposes. In the educational programs, teachers have many objectives which can be converted into some important points that can be mapped on a skill tree. A skill tree is actually commonly known for building gaming media as a decision making system but it has not been widely applied for educational purposes. This paper discusses how to design a skill tree model for effective learning media. The learning objective can be mapped in the skill tree and used for decision-making to decide whether the subject matter being taught by a teacher can proceed or not. The method used in this study was the development method. The findings indicated that the skill tree can be applied as learning media. The results of product testing reveal insignificant defects and smooth operation. Therefore the developed software can be considered as an eligible product to be applied. This software is aimed to assist teachers in understanding the weaknesses of the students and improving the quality of education.
The design and feasibility test of drive-thru market prototype based on Wemos as the learning media of internet of things (IoT) application Rustam Asnawi; Ariadie Chandra Nugraha; Deny Budi Hertanto; Faranita Surwi; Indriya Galih Prayogi
Journal of Engineering and Applied Technology Vol 1, No 1 (2020): (March)
Publisher : Faculty of Engineering, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jeatech.v1i1.34742

Abstract

This research aims at (1) developing a learning media for the internet of things (IoT) applications in the form of Wemos-based drive-thru market module which is appropriate for Interface Engineering Courses at Electrical Engineering Education, Faculty of Engineering, Universitas Negeri Yogyakarta; and (2) determining the feasibility of the developed learning media. The subject of the research was the 2015 Mechatronics Engineering Education students. The object of the research was the drive-thru market prototype. The research instrument was the questionnaire to obtain data on media feasibility. The proper research results were in the form of (1) the hardware namely the drive-thru market prototype and it's Android application software, (2) the proper function of the prototype and Android applications with the design, (3) the feasibility from the media experts with the percentage of 78% and 83 % respectively that can be categorized as Appropriate, and from the user obtained the percentage of 86.15% with the category of Very Appropriate.
The Effectiveness of Using Virtual Reality-Based Virtual Laboratories in the Internet of Things Course Sri Safiatuddin; Rustam Asnawi
Jurnal Penelitian Pendidikan IPA Vol 9 No 7 (2023): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i7.4040

Abstract

The purpose of this study was to determine the effectiveness of using Virtual Reality-Based virtual laboratories on student learning outcomes in the Internet of Things Course in the Electrical Engineering Study Program, the average difference in student learning outcomes through the use of Virtual Reality-Based virtual laboratories in the Internet of Things Course in the Engineering Study Program Electrical Engineering, and student learning motivation through the use of Virtual Reality-Based virtual laboratories in the Internet of Things Course in the Electrical Engineering Study Program. This research is an experimental research approach that will be used is Quasi Experimental Design with the form of Nonequivalent Control Group Design. The validation test was carried out by measurement experts for post-test and pre-test questions, each aspect was tested by two experts. The results of the study show the effectiveness of using Virtual Reality-Based virtual laboratories to improve student learning outcomes in the Internet of Things Course in the Electrical Engineering Study Program. The increase in student learning outcomes analyzed using N-gain in the experimental class obtained an average value of 0.65 including the medium category, and the average N-gain for the control class was 0.15 in the low category. Meanwhile, the average difference in student learning outcomes through the effectiveness of using Virtual Reality-Based virtual laboratories in the Internet of Things Course in the Electrical Engineering Study Program is significantly and significantly different. The results of the experimental class data analysis obtained the t_count > t table value, namely 8,351 > 2,003 and the Sig. (2-tailed) 0.005 <0.05, then Ha is accepted, meaning that there is a difference in the average student learning outcomes after using a virtual reality-based virtual laboratory in the internet of things course in the Electrical Engineering Study Program. Student motivation through the use of Virtual Reality-Based virtual laboratories in Internet of Things Courses in the Engineering Study Program can increase very well
The effectiveness of iot-based learning media for supporting the expertise program of renewable energy engineering in vocational high school Kayohana, Ketut Widya; Asnawi, Rustam; Amaria, Marshanda Alfa
Jurnal Pendidikan Teknologi dan Kejuruan Vol 29, No 2 (2023): (October)
Publisher : Faculty of Engineering, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jptk.v29i2.52766

Abstract

The objectives of this study are: (1) the performance of developing renewable energy based on IoT (Internet of Things) in the renewable energy engineering expertise program in the subject of solar hydro-wind energy (Tesha) engineering at Vocational Schools, (2) the level feasibility of development renewable energy based IoT in the subject Tesha's learning at Vocational Schools, (3) level effectiveness development renewable energy based IoT in the subject Tesha learning at Vocational Schools. This research is a research and development research with ADDIE approach (Analyze, Design, Develop, Implement, Evaluate) (Branch (2009) with approach experiments that will used is Quasi Experimental Design with form Nonequivalent Control Group Design. Results from study this show: (1) the feasibility of learning media " Eligible " category. Analysis response user get "Very feasible " category with Cronbach's Alpha get "Very Strong" category so that this media is declared fit for use as a learning media, (2) different and difficulty test on the questions pre-test with medium category of 96.875%, difficult 3.125% and post-test with moderate category of 93.75%, easy 3.125%, and difficult 3,125%, (3) Learning media more IoT based effective in comparison without using IoT because score statistic 0.05 that is 0.044 with the post-test average value is greater than the specified KKM value (85.42 75), while without using IoT, the post-test average value almost same KKM value (75.96 75).Keywords: learning media, renewable energy, Internet of Things (IoT)
Green Technology in Unmanned Aerial Vehicle (UAV) Electric Propulsion System: A Review Prasetiyo, Erwan Eko; Asnawi, Rustam
Journal of Renewable Energy, Electrical, and Computer Engineering Vol. 5 No. 1 (2025): March 2025
Publisher : Institute for Research and Community Service (LPPM), Universitas Malikussaleh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jreece.v5i1.16726

Abstract

The use of fossil energy and coal has a significant impact on global warming through increased greenhouse gas emissions, particularly carbon dioxide (CO2). To address this issue, green technologies offer sustainable solutions, including the development of electric propulsion systems on unmanned aircraft (UAVs). Electric propulsion uses clean energy sources such as batteries and hydrogen fuel cells, significantly reducing emissions and air pollution. This research explores the importance of applying green technologies in the optimization of electric propulsion on UAVs, and the resulting environmental and economic benefits. Electric propulsion technology not only reduces carbon footprint and air pollution, but also improves energy efficiency and extends the operational life of UAVs. In addition, it allows UAVs to operate more quietly, reduces noise pollution, and can be used in various sensitive environments. The implementation of green technologies in UAV electric propulsion systems faces challenges such as limited battery capacity and recharging infrastructure. However, with collaboration between industry, government and research institutions, as well as regulatory support and incentives, the development of these technologies can be accelerated to achieve more environmentally friendly and sustainable UAV operations. Through the application of electric propulsion technology, UAVs are expected to provide innovative and sustainable solutions in areas such as aerial surveying, security surveillance, and freight forwarding, while making a positive impact on the environment and sustainability of the global ecosystem.
In-depth evaluation and enhancement of a PV-wind combined system: A case study at the Engineering Faculty of Wahid Hasyim University Mauludin, Moch Subchan; Khairudin, Moh.; Asnawi, Rustam; Trisnoaji, Yuki; Prasetyo, Singgih Dwi; Azizah, Safira Rusyda; Wiraguna, Rayie Tariaranie
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 16, No 2: June 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v16.i2.pp1274-1283

Abstract

Energy sustainability is crucial for mitigating climate change and reducing dependence on fossil fuels. This research evaluates a hybrid renewable energy system combining photovoltaic (PV) technology and wind turbines to meet the electricity demand of Wahid Hasyim University's Faculty of Engineering, totalling 555,000 VA. Using HOMER Pro software, the study identifies the optimal configuration based on technical, economic, and environmental aspects. The hybrid system integrating PV, wind turbines, batteries, and converters achieves the lowest Net Present Cost (NPC) of $214,877 and a Levelized Cost of Energy (LCOE) of $0.0185/kWh, outperforming grid-only systems. Environmentally, the system significantly reduces carbon dioxide (CO2) emissions, from 559,226 kg/yr in conventional systems to 62,452 kg/yr. Solar energy contributes 56% of electricity generation, leveraging stable solar radiation of 4.28–5.54 kWh/m²/day. Additionally, an annual surplus of 156,350 kWh can be sold back to the grid, enhancing operational efficiency. This study demonstrates that hybrid renewable energy systems deliver long-term cost efficiency and significantly mitigate climate impacts. It provides a sustainable energy model for campuses in Indonesia and worldwide, particularly in regions with abundant solar resources.
Implementation of a Solar-Wind Hybrid System for the Posong Nature Tourism Food Court in Tlahab Village, Temanggung Regency Asnawi, Rustam; Nurhening Yuniarti; Slamet Widodo; Dwi Otik Kurniawati; Pinandita, Satria
Journal of Community Empowerment Vol. 5 No. 2 (2025): Journal of Community Empowerment
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jce.v5i2.33932

Abstract

This community service activity was carried out by a team of lecturers and students of Yogyakarta State University (UNY) in Tlahap Village, Kledung District, Temanggung Regency, specifically in the Posong Nature Tourism area. The background of this activity was the limited access to electricity faced by the community managing food courts in the tourist area due to the lack of optimal PLN network coverage. This has an impact on low service quality, limited stall operating hours, and lack of comfort for tourists. Therefore, the community service team presented a renewable energy-based solution in the form of a hybrid system of Solar Power Plants (PLTS) and wind turbines with a capacity of 1,500 watts and 5,000 Wh of energy storage. The method of implementing the activity was carried out through an energy needs survey, socialization, device installation, technical training, and monitoring and evaluation. The community service activity was carried out on August 8, 2025, at 10:00 WIB until finished, attended by the Head of Tlahap Village, the Chairperson and management of Posong Nature Tourism, and 23 local residents, with cloudy and foggy weather conditions but proceeded smoothly. Participants were given an understanding of renewable energy systems, maintenance techniques, handling electrical short circuits, and power usage management to prevent batteries from draining quickly. The results of discussions with the community showed that the application of renewable energy not only provides a solution to electricity needs, but also increases the community's capacity to manage electrical engineering systems independently. Furthermore, the availability of electricity supports the development of food court businesses, tourist comfort, and strengthens Posong's image as an eco-tourism destination. This activity contributes to the achievement of the Sustainable Development Goals (SDG 7: Affordable and Clean Energy, SDG 8: Decent Work and Economic Growth, and SDG 13: Addressing Climate Change). 
Bibliometric visualization of metal-air battery research trends Pinandita, Satria; Asnawi, Rustam; Syamsiro, Mochamad
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 16, No 3: September 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v16.i3.pp1865-1880

Abstract

Metal-air batteries are rechargeable secondary batteries with high energy density, typically using carbon electrodes. However, carbon waste poses environmental risks. Fly ash, a byproduct of coal combustion, offers a sustainable alternative due to its high electrical conductivity. This study analyzes research trends on metal-air batteries and fly ash from 2019 to 2023 using bibliometric visualization of Scopus-indexed publications. The keyword search was refined from 'Battery' to 'Air Battery' and, finally, 'Air Battery' with 'Fly Ash,' yielding 60 relevant articles. Using the VOSviewer, research patterns, key focus areas, and collaboration networks were identified. The results indicate a 14.87% increase in publications from 2019 to 2023, with significant growth from 2019 to 2021 before declining after 2022. This fluctuation suggests shift in research interests toward other battery technologies. Fly ash demonstrates potential as a carbon substitute for air batteries, promoting sustainability. However, further research is needed to optimize its application and address technical challenges. Bibliometric visualization highlights a growing interest in fly ash for environmentally friendly battery development due to its abundance and sustainability.
Co-Authors - Sukir Ahmad Hoirul Amaria, Marshanda Alfa Ariadie Chandra Nugraha Arum Kusuma Wardhany Azizah, Safira Rusyda Deny Budi Hertanto Djoko Laras Budiyo Taruno Dwi Feriyanto Dwi Otik Kurniawati Fanani Arief Ghozali Fanani Arief Ghozali Faranita Surwi Felixtianus Eko Wismo Winarto Hanif, Naufal Muhammad I Djatmiko, I Indriya Galih Prayogi Ketut Widya Kayohana Mauludin, Moch Subchan Mentari P Jati Mochamad Syamsiro Moh. Khairudin Muchlas Muchlas Nurhening Yuniarti Prasetiyo, Erwan Eko Putra, Yudi Utomo Rio Tirto Sudarma Satria Pinandita Singgih Dwi Prasetyo Slamet Widodo Sri Safiatuddin Trisnoaji, Yuki Wiraguna, Rayie Tariaranie