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All Journal IAES International Journal of Artificial Intelligence (IJ-AI) ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Jurnal Penelitian dan Penilaian Pendidikan Kilat Energi & Kelistrikan Jurnal Ilmiah Sutet TERANG : Jurnal Pengabdian Pada Masyarakat Menerangi Negeri Indonesian Journal of Electrical Engineering and Computer Science International Journal of Economics, Management, Business, and Social Science Ilomata International Journal of Social Science Indonesian Journal of Research and Educational Review (IJRER) Mitra Abdimas: Jurnal Pengabdian kepada Masyarakat
Anggaini, Dwi
Institut Teknologi PLN
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Critical Thinking Skills of College Students in Solving Linear Algebra Problems Using the Problem-Based Learning Model Anggaini, Dwi; Sutrisno, Tri
ETDC: Indonesian Journal of Research and Educational Review Vol. 5 No. 1 (2025): December
Publisher : Education and Talent Development Center Indonesia (ETDC Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51574/ijrer.v5i1.4160

Abstract

Third-semester electrical engineering students taking linear algebra had an average pretest of 54.2, indicating poor conceptual mastery of critical thinking skills (CTS). They struggled with variable analysis, mathematical inferences, and logical engineering problem solutions. This report suggests an innovative learning model that bridges mathematical theory and engineering applications. This study examines whether Problem-Based Learning (PBL) improves students' CTS and explains the qualitative mechanisms. This study employs an explanatory sequential mixed-methods approach. To measure CTS pre- and post-test scores using Facione indicators (interpretation, analysis, evaluation, inference, and explanation), 42 electrical engineering students were tested. In the second stage (quantitative), the researchers explained the quantitative results through observation of the learning process, in-depth interviews, and document analysis. The findings indicate the CTS score increased 31.2% from 54.2 to 71.1. The paired t-test (T (41) = 8.72; p < 0.001) confirmed statistical significance, while the Cohen’s d Effect Size value of 1.39 indicated significant practical impact. 10 The Inference (44%) and Analysis (38%) indicators increased most. The qualitative results indicated that PBL forced students to think investigatively instead of procedurally. High group activity also improved students' explanation and evaluation skills (p = 0.006) by encouraging coherent arguments. With PBL, electrical engineering students' CTS, especially higher order thinking skills like analysis and inference, improved greatly. Positive group dynamics and changes in students' learning experiences, which PBL promotes to develop critical thinking and engineering-relevant problem-solving skills, supported this effectiveness.
Penerapan Smart Integrated Farming Berbasis PLTS untuk Pertanian Berkelanjutan di Kampung Gadog, Jawa Barat Ersalia Dewi Nursita; Ginas Alvianingsih; Dwi Anggaini; Muhammad Muhammad; Wahid Abdul Khoir; M. Mucklis Aula Rohman
Mitra Abdimas: Jurnal Pengabdian kepada Masyarakat Vol 6 No 1 (2026)
Publisher : Medan Resource Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57251/mabdimas.v6i1.2221

Abstract

This community service program aimed to implement a Smart Integrated Farming system based on renewable energy in Kampung Gadog, West Java. The program addressed problems related to energy dependency, inefficient post-harvest processing, and low productivity in conventional farming and aquaculture systems. The implemented system integrated an off-grid Solar Power Plant (PLTS), Solar Dryer Dome (SDD), hydroponics, biofloc aquaculture, and Internet of Things (IoT)-based monitoring technology. The methods included field surveys, system design, installation, training, and system evaluation. The results showed that the PLTS reduced operational energy costs by more than 50%, while the Solar Dryer Dome accelerated drying efficiency by 30–50% with final moisture content below 18%. In addition, hydroponic productivity increased by 20% and fish farming productivity increased by 30%. The IoT monitoring system achieved monitoring accuracy above 90% and reduced production failure risk by 25%. Overall, the program successfully improved energy efficiency, agricultural productivity, and community capacity toward sustainable smart farming implementation.
Co-Authors Adri Senen Adri Senen Alex Fernandes ARIF KURNIAWAN Christine Widyastuti Denny setiawan Dini, Hasna Satya Eko Supriyanto Eko Supriyanto Ersalia Dewi Nursita Fikri, Miftahul Ginas Alvianingsih Hasna Satya Dini Henry Pariaman Intan Ratna Sari Yanti Iwa Garniwa Jamani Jamian, Jasrul Jasrul Jamani Jamani M. Mucklis Aula Rohman Muhammad Muhammad MUSA - Oktaria Handayani Perdana Putera, Perdana Satya Dini, Hasna Titi Ratnasari Titi Ratnasari Titi Ratnasari TRI SUTRISNO Tri Wahyu Oktaviana Putri Wahid Abdul Khoir Yoakim Simamora