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All Journal Jurnal Pendidikan Teknik Mesin Undiksha Jurnal Pendidikan Guru (JPG) Jurnal Ekonomi dan Perbankan Syariah SEMINAR NASIONAL SOSIAL, SAINS, PENDIDIKAN, HUMANIORA International Journal of Industrial Innovation and Mechanical Engineering Jurnal Penelitian Pendidikan
Edy Suprapto
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Astronomy Automotive Engineering Computer Science & IT Economics, Econometrics & Finance Education Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mathematics Mechanical Engineering Social Sciences Other

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Impact of Engine Downsizing on Fuel Economy and Carbon Footprint : A Simplified Modeling Approach Priyono Priyono; Damianus Manesi; Edy Suprapto; Fahrizal Fahrizal; Wofrid E. Bianome
International Journal of Industrial Innovation and Mechanical Engineering Vol. 2 No. 2 (2025): May : International Journal of Industrial Innovation and Mechanical Engineering
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/ijiime.v2i2.269

Abstract

Global climate change demands immediate technological advancements, particularly in the transport industry that continues to use fossil fuels. One viable solution is to reduce the size of vehicle engines to make them more fuel-efficient and lower carbon emissions. The purpose of this research is to assess the effect of reducing engine size on fuel consumption and CO₂ emissions in low-cost green car hatchbacks in Indonesia. The technique employed is straightforward analytical modeling, employing Pearson correlation analysis and linear regression among three significant variables: engine capacity, fuel economy, and CO₂ emission. The data are obtained from the technical specifications of four hatchback automobile models, all of which have an engine capacity of less than 1,200 cc. Findings indicate that smaller engine capacity is accompanied by greater fuel economy and lower carbon emissions. The lowest engine size of 998 cc is used in the Toyota Agya, which demonstrates the most efficient fuel and lowest emissions. The statistical analysis shows that there is an inverse relationship between engine size and fuel efficiency, but a positive relationship between engine size and CO₂ emissions. The limitation of sample size causes reduced statistical power of the model. In conclusion, engine downsizing can prove to be a productive approach in promoting green schemes, but additional research with a larger data set and other determinants must be undertaken to establish a more advanced and precise model.
Peningkatan Hasil Belajar Matematika Kelas III Menggunakan Media Vidio Pembelajaran Interaktif Dwianing Febriyanti; Edy Suprapto; Langgeng Widoyo
JPG: Jurnal Pendidikan Guru Vol. 5 No. 3 (2024): JPG: Jurnal Pendidikan Guru
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Ibn Khaldun Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32832/jpg.v5i3.15103

Abstract

Penelitian ini bertujuan untuk mengevaluasi penggunaan media video pembelajaran interaktif dalam meningkatkan hasil belajar matematika pada materi mencari keliling bangun datar di SDN 1 Wonoketro, kelas III, tahun pelajaran 2022/2023. Jenis penelitian yang digunakan adalah pra-eksperimen dengan desain penelitian one-group pretest-posttest. Sampel penelitian sebanyak 30 siswa kelas III yang dipilih secara acak. Teknik pengumpulan data menggunakan soal pretest dan posttest untuk mengukur peningkatan hasil belajar mereka. Data yang terkumpul dianalisis menggunakan uji-t berpasangan untuk membandingkan skor pretest dan posttest. Hasil penelitian menunjukkan adanya peningkatan yang signifikan pada hasil belajar matematika siswa setelah menggunakan media video pembelajaran interaktif. Rata-rata skor posttest (M = 80,5, SD = 7,2) secara signifikan lebih tinggi dibandingkan dengan skor pretest (M = 65,2, SD = 6,9); t(29) = 9,78, p < 0,001. Hal ini menunjukkan bahwa penggunaan media video pembelajaran interaktif efektif dalam meningkatkan pemahaman siswa dalam mencari keliling bangun datar.
Co-Authors Basri K Damianus Manesi Davi Apriandi Dwianing Febriyanti Elzra Melasevix Fahrizal Fahrizal Fahrizal Fahrizal Fathiya Khaira Ummah Ika Hidayatul Masynuah Ika Krisdiana Langgeng Widoyo Mau, Sealtial Nurlina Wijayati Orisa Satifa Priyono Priyono Priyono Pupung Puspita Ningrum Rahma Fadhila Nuriya Fachmi SANUSI SANUSI Sardulo Gembong Sari Dewi Agustin Vera Dewi Susanti Wasilatul Murtafiah Wofrid E. Bianome