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All Journal Jurnal Ilmiah Ekonomi dan Bisnis Al Ishlah Jurnal Pendidikan Jurnal Obsesi: Jurnal Pendidikan Anak Usia Dini IT JOURNAL RESEARCH AND DEVELOPMENT INOVTEK Polbeng - Seri Informatika Dinamisia: Jurnal Pengabdian Kepada Masyarakat MATRIK : Jurnal Manajemen, Teknik Informatika, dan Rekayasa Komputer JURNAL TEKNOLOGI DAN OPEN SOURCE Digital Zone: Jurnal Teknologi Informasi dan Komunikasi JURTEKSI Jurdimas (Jurnal Pengabdian Kepada Masyarakat) Royal JOURNAL OF SCIENCE AND SOCIAL RESEARCH Zonasi: Jurnal Sistem Informasi Jurnal Pengabdian Masyarakat Multidisiplin Jutsi: Jurnal Teknologi dan Sistem Informasi J-Com (Journal of Computer) Jurnal Ekonomika Dan Bisnis J-COSCIS : Journal of Computer Science Community Service CONSEN: Indonesian Journal of Community Services and Engagement Jurnal Pemberdayaan Sosial dan Teknologi Masyarakat Indonesian Research Journal on Education JURNAL KOMUNITAS SAINS MANAJEMEN SATIN - Sains dan Teknologi Informasi INOVTEK Polbeng - Seri Informatika SAICGC
Nurliana Nasution, Nurliana
Universitas Lancang Kuning
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Impact of Principal Communication and Psychological Climate on Enhancing Teacher Performance Nurliana Nasution; Wahyuni Sri
AL-ISHLAH: Jurnal Pendidikan Vol 17, No 1 (2025): MARCH 2025
Publisher : STAI Hubbulwathan Duri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35445/alishlah.v17i1.6946

Abstract

Effective school leadership relies heavily on communication, which plays a crucial role in shaping teacher performance. Additionally, a school’s psychological climate significantly influences teacher motivation, satisfaction, and professional engagement. While prior studies have explored these factors separately, limited research has examined their combined effect, particularly in the Indonesian context. This study investigates the joint impact of principals’ communication effectiveness and psychological climate on teacher performance in state high schools in Rumbai District, Pekanbaru City. Using a quantitative correlational design, data were collected from 93 teachers across three schools through Likert-scale questionnaires. Variables measured included principal communication effectiveness, psychological climate, and teacher performance. Data analysis employed descriptive statistics, t-tests, F-tests, and regression analysis. Results show that both principal communication (t = 16.631, p 0.001) and psychological climate (t = 4.171, p 0.001) significantly influence teacher performance. Together, these variables account for 86.2% of the variance in teacher performance (Adjusted R² = 0.862), indicating a strong predictive relationship. Descriptive findings also revealed moderate achievement levels (66%–73%) across all indicators. The study concludes that effective communication and a positive psychological climate are essential for fostering teacher engagement, performance, and a collaborative school culture. These findings highlight the strategic role of school principals as communicative leaders and underscore the need to prioritize communication and climate in leadership development programs.
Dampak SMOTE terhadap Kinerja Random Forest Classifier berdasarkan Data Tidak seimbang Erlin Erlin; Yenny Desnelita; Nurliana Nasution; Laili Suryati; Fransiskus Zoromi
MATRIK : Jurnal Manajemen, Teknik Informatika dan Rekayasa Komputer Vol. 21 No. 3 (2022)
Publisher : Universitas Bumigora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30812/matrik.v21i3.1726

Abstract

Dalam aplikasi machine learning sangat umum ditemukan kumpulan data dalam berbagai tingkat ketidakseimbangan mulai dari ketidakseimbangan kecil, sedang sampai ekstrim. Sebagian besar model machine learning yang dilatih pada data tidak seimbang akan memiliki bias dengan memberikan tingkat akurasi yang tinggi pada kelas mayoritas dan sebaliknya rendah pada kelas minoritas. Tujuan penelitian ini adalah untuk mengevaluasi dampak dari SMOTE (Synthetic Minority Oversampling Technique) pada pengklasifikasi Random Forest untuk memprediksi penyakit jantung. Data berjumlah 299 berasal dari UCI Machine learning Repository digunakan untuk membangun model prediksi berdasarkan 12 variabel independen dan 1 variabel dependen. Kelas minoritas dalam dataset pelatihan di oversampling menggunakan teknik SMOTE (Synthetic Minority Oversampling Technique). Model dievaluasi tidak hanya menggunakan ukuran kinerja Accuracy dan Precision saja, namun juga menggunakan alternatif ukuran kinerja lainnya seperti Sensitivity, F1-score, Specificity, G-Mean dan Youdens Index yang lebih baik digunakan untuk data yang tidak seimbang. Hasil penelitian menunjukkan bahwa teknik SMOTE (Synthetic Minority Oversampling Technique) mampu mengurangi overfitting sekaligus meningkatkan kinerja model Random Forest pada semua indikator. Peningkatan skor Accuracy sebesar 3.45%, Precision 4.8%, Sensitivity 7.1%, F1-score 4.8%, Specificity 2.1%, G-Mean 4.4%, dan Youdens Index 6.3%. Penelitian ini membuktikan bahwa dalam menentukan pengklasifikasi dengan algoritma machine learning seperti Random Forest, kemiringan kelas dalam data perlu diperhitungkan dan diseimbangkan untuk hasil kinerja yang lebih baik.
The Effectiveness of a STEAM-Integrated Project-Based Learning Model for Teaching Motorcycle CVT Diagnostics in Vocational Schools Adek Irawan; Nurliana Nasution; Rizki Novendra; Yogo Turnandes; Budi Cahya; Nurli Indra Sari
AL-ISHLAH: Jurnal Pendidikan Vol 18, No 1 (2026): MARCH 2026
Publisher : STAI Hubbulwathan Duri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35445/alishlah.v18i1.9456

Abstract

This study examines the effectiveness of integrating Project-Based Learning (PBL) with a STEAM approach to enhance students’ conceptual understanding and diagnostic skills in continuous variable transmission (CVT) systems within vocational education. A quasi-experimental design was employed involving 34 Grade XII students from the Motorcycle Engineering program at SMK Negeri 4 Rambah, Indonesia. Participants were divided into an experimental group receiving PBL-STEAM instruction and a control group receiving traditional teaching. Data were collected through posttests and analyzed using N-gain, independent samples t-tests, and effect size (Cohen’s d). The experimental group achieved a higher mean posttest score in conceptual understanding (84.24) compared to the control group (74.00). The N-gain for the experimental group was 0.68 (high), while the control group showed 0.28 (low). Diagnostic skills also improved significantly, with mean scores of 90.00 (experimental) and 76.00 (control). Statistical analysis revealed significant differences between groups (p 0.05). Effect sizes were large (d = 1.77 for conceptual understanding; d = 2.68 for diagnostic skills). The findings indicate that the PBL-STEAM approach substantially improves both conceptual mastery and diagnostic skills. This model aligns well with vocational education objectives and supports the development of competencies relevant to industry demands.
Co-Authors Adek Irawan Agung Pratama Ahmad Zamsuri, Ahmad Ahmad, Rafik Alfajar, Muhammad Alfanandi, Ridho Alkindi, Aditia Fikri Alwan, Hiba Basim Anto Ariyanto arizal N, arizal Bayu Febriadi, Bayu Bimby, Novia Putri Budi Cahya Dadang Rukmana Sitompul darmayunata, yuvi David Setiawan David Setiawan Deni Iskandar Desnelita, Yenny Erlin Fachreza Akbar Fadhlillah, Il Fajar, Muhammad Al Fajrizal Fajrizal, Fajrizal Feldiansyah Bakri Nasution Feldiansyah Feldiansyah Feldiansyah Feldiansyah Feldiansyah Nasution Feldiansyah, Feldiansyah Fransiskus Zoromi Herlinawati Herlinawati Ilfan Setiawan Jeni Wardi Khairani Djahara, Khairani Laili Suryati Mariza Devega Martahan, Sutan Marwa, Marwa Mhd. Arief Hasan, Mhd. Arief Muhammad Al Fajar MUHAMMAD RIZAL Nasution, Feldiansyah Novendra, Rizki nurhayani lubis Nurli Indra Sari Nurul Aien Binti Abd Aziz Putra, Rudi Julian Eka Ramadhani, Maya Ria Saputri Ria Saputri, Ria Ririn Handayani Roki Hardianto Roliah, Roliah Safrini, Safrini Siswanto, Didik Sitompul, Dadang Rukmana Sri Rahayu Prastyaningsih Sri Utami Lestari Sri Wahyuni Susandri, Susandri Sutan Martahan Syofyan Syofyan Tumilah, Tumilah Wahyuni Sri Walhidayat Walhidayat Walhidayat, Walhidayat Yayi Suryo Prabandari Yogo Turnandes Yoyon Efendi Yummastian Yummastian, Yummastian Yuvi Darmayunta Zamzami, Zamzami