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All Journal SAINTI: Majalah Ilmiah Teknologi Industri Journal of Hypermedia & Technology-Enhanced Learning
Zahra, Fadhila Az
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Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Social Sciences Other

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Exploring the Impact of Implementing Project-Based Learning Assisted by Multisim on Student Learning Outcomes in the PISAV Subject at SMK Negeri 1 West Sumatra Zahra, Fadhila Az; Jasril, Ilmiyati Rahmy; Faiza, Delsina; Thamrin
Journal of Hypermedia & Technology-Enhanced Learning Vol. 2 No. 2 (2024): Journal of Hypermedia & Technology-Enhanced Learning—Meta World
Publisher : Sagamedia Teknologi Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58536/j-hytel.v2i2.119

Abstract

This study aims to evaluate the impact of implementing the Project-Based Learning (PjBL) model assisted by Multisim software on students' learning outcomes in the subject of planning and installation of audio-video systems (PISAV) in class XI Audio Video Engineering at SMK Negeri 1 West Sumatra. This research uses a quasi-experimental research design with a quantitative approach. The experimental design employs the One Group Pretest-Posttest Design. In this research, we conducted a pretest on one sample group before treatment (condition before), and after the treatment, we conducted a posttest (condition after). The sample in this study is the XI TAV class at SMK Negeri 1 West Sumatra. The research instruments used include pretest and posttest questions in objective form. The results of this study show that the condition after treatment has an average of 79.09, exceeding the condition before treatment, with an average of 50.18. These results suggest that the application of the PjBL learning model assisted by Multisim software has a significant impact on improving students' learning outcomes by 57.61%. Based on the hypothesis test results, it can be concluded that the t-value (21.59) is higher than the t-table (1.68), leading to the rejection of the null hypothesis (H0) and acceptance of the alternative hypothesis (H1). In conclusion, there is an improvement in students' learning outcomes in the PISAV subject after the application of the PjBL learning model assisted by Multisim software.
Analisis Kehilangan Inti Sawit Pada Alat Claybath di PT XYZ Sutri, Reni; Zahra, Fadhila Az
SAINTI: Majalah Ilmiah Teknologi Industri Vol. 22 No. 2 (2025)
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/sainti.v22i2.48

Abstract

Pengolahan kelapa sawit bertujuan menghasilkan minyak sawit mentah dan inti sawit sebagai produk bernilai ekonomi tinggi. Salah satu permasalahan utama pada stasiun pengolahan inti adalah kehilangan inti sawit (kernel losses) yang terjadi pada unit claybath. Penelitian ini dilakukan untuk menganalisis kehilangan inti sawit sebagai indikator kinerja alat claybath di PT. XYZ yang belum pernah dilakukan secara kuantitatif serta untuk menilai efektivitas dosis CaCO3 di claybath. Pengambilan data dilakukan selama 30 hari di unit nut dan kernel, dengan interval pengambilan sampel setiap dua jam setelah proses produksi dimulai. Sampel keluaran claybath ditimbang dan dipisahkan menjadi beberapa fraksi untuk menghitung persentase kehilangan kernel. Hasil penelitian menunjukkan bahwa rata-rata kehilangan kernel di claybath sebesar 2,08%, dengan nilai berkisar antara 0,11% hingga 9,05%. Kehilangan tertinggi terjadi akibat kejenuhan larutan dan gangguan proses pemisahan. Secara umum, nilai kehilangan kernel masih berada di bawah standar maksimum pabrik sebesar 3%. Dengan demikian, dapat disimpulkan bahwa kinerja alat claybath di PT. XYZ masih tergolong baik dan dosis penambahan CaCO₃ sebanyak 1800 kg per hari efektif dalam menekan kehilangan inti sawit.
Co-Authors Delsina Faiza Jasril Jasril Sutri, Reni Thamrin