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All Journal Jurnal Mekanik Terapan Jurnal Pendidikan dan Kebudayaan
Sugiyarto
Politeknik Negeri Jakarta
Humanities Automotive Engineering Education Energy Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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EFEKTIVITAS E-LEARNING SEBAGAI MEDIA PEMBELAJARAN PADA MATA KULIAH BAHASA INGGRIS DI POLITEKNIK NEGERI JAKARTA Nia Rismawati; Suci Widyorini; Sugiyarto; Nina Sulistyowati
Jurnal Pendidikan dan Kebudayaan (JURDIKBUD) Vol. 2 No. 3 (2022): November 2022 : Jurnal Pendidikan dan Kebudayaan (JURDIKBUD)
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurdikbud.v2i3.690

Abstract

The Covid-19 pandemic that hit Indonesia caused the temporary suspension of all learning activities. This requires higher education units to utilize science and technology effectively and efficiently. One of the learning media that can be used is e-learning. However, the application of online lectures through e-learning is a big question mark regarding the effectiveness of its use. The purpose of this study was to determine the effectiveness of using e-learning to improve English language skills in the era of the Covid 19 pandemic. This research is an experimental study conducted at the Jakarta State Polytechnic PSDKU Demak. The instrument used in this research is in the form of pre-test and post-test questions. Analysis of the data used in this study is the N-Gain and the N-Gain difference test using the t-test to determine the effectiveness of the use of e-learning. Based on the results of the effectiveness test of using e-learning, it can be concluded that from the effectiveness test in the experimental class, the criteria that e-learning is quite effective and significant in improving English language skills in the Covid 19 pandemic era.
Innovation in Truck Air Filter Cleaning: Effectiveness and Development of an Electric Motor-Based System Sugiyarto; Rahmat Noval; Edy Ismail; Hana Yulia Siska; Siti Widyawati; Wildan Ma’wa Riski; Rahmat Hari Prasetya
Jurnal Mekanik Terapan Vol 7 No 2 (2026): August 2026
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/jmt.v7i2.8737

Abstract

Manual cleaning of truck air filters in workshops is time-consuming, reduces work efficiency, and may expose technicians to fine dust. However, practical and affordable electric motor-based cleaning tools specifically designed for truck workshops remain limited. This study aimed to design and develop a practical electric motor-based air filter cleaning tool suitable for truck repair workshops, and evaluate and compare the cleaning time of the developed tool at three motor rotation speeds (800, 1000, and 1200 RPM) with the conventional manual cleaning method. The results showed that the average cleaning time was 6.99 minutes for the manual method, 5.21 minutes at 800 RPM, 4.94 minutes at 1000 RPM, and 5.09 minutes at 1200 RPM. The 1000 RPM setting produced the shortest cleaning time and achieved a 27.46% reduction in cleaning time compared with the manual method. Therefore, the developed electric motor-based air filter cleaning tool demonstrates potential to improve cleaning efficiency for truck air filter maintenance. The results indicate that the developed electric motor-based air filter cleaning tool can reduce cleaning time compared with the conventional manual method, with 1000 RPM producing the shortest average cleaning time among the tested speeds.
Co-Authors Edy Ismail Hana Yulia Siska Nia Rismawati Nina Sulistyowati Rahmat Hari Prasetya Rahmat Noval Siti Widyawati Suci Widyorini Wildan Ma’wa Riski