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All Journal Inovasi : Jurnal Ekonomi, Keuangan, dan Manajemen Jurnal Kesehatan Manarang Indiktika : Jurnal Inovasi Pendidikan Matematika Abdi: Jurnal Pengabdian dan Pemberdayaan Masyarakat Jurnal Gentle Birth Excellent Midwifery Journal Jurnal Ilmu Komunikasi Balayudha (JIKOBA) Jurnal Teknik Informatika Andalas International Journal of Socio-Humanities Journal of Advanced Sciences and Mathematics Education Jurnal Ilmiah Teknik Informatika dan Komunikasi Jurnal Mitrasehat International Journal of Health, Engineering and Technology Ezra Science Bulletin MULTIPLE: Journal of Global and Multidisciplinary Jurnal Pengabdian Masyarakat Sevaka: Hasil Kegiatan Layanan Masyarakat
Rika Handayani
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Penerapan Teorema Bayes Untuk Mendiagnosa Hama dan Penyakit Pada Tanaman Kelapa Sawit Rika Handayani; A. Sidiq Purnomo
JEKIN - Jurnal Teknik Informatika Vol. 4 No. 2 (2024)
Publisher : Yayasan Rahmatan Fidunya Wal Akhirah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58794/jekin.v4i2.737

Abstract

Kelapa sawit (Elaeis guineensis Jacq.) merupakan tanaman perkebunan sebagai penghasil minyak. Indonesia merupakan produsen minyak kelapa sawit terbesar di dunia. Kelapa sawit tumbuh dan dibudidayakan hampir di seluruh Indonesia, dengan penyebaran yang luas di daerah Aceh, Sumatera, Jawa, Kalimantan, dan Sulawesi. Permasalahan umum yang terjadi dalam budidaya kelapa sawit meliputi produktivitas tanaman yang rendah, biaya produksi yang tinggi, dan kebijakan pemerintah yang kontra produktif. Salah satu faktor yang dapat mengurangi produktivitas dan pertumbuhan kelapa sawit adalah adanya penyakit pada tanaman tersebut. Penelitian ini bertujuan untuk mengidentifikasi, mendiagnosa serta memberikan informasi tentang hama dan penyakit pada tanaman kelapa sawit. Oleh karena itu, dikembangkan sebuah sistem pakar menggunakan metode Teorema Bayes untuk mendiagnosa hama dan penyakit pada tanaman kelapa sawit. Data yang digunakan dalam penelitian ini terdiri dari 19 hama dan penyakit serta 45 gejala penyakit pada tanaman kelapa sawit yang diperoleh dari seorang pakar. Sistem ini dibuat dan dikembangkan menggunakan bahasa pemrograman PHP, Framework CodeIgniter dan database MySQL. Penelitian ini mencapai tingkat akurasi 93.33% dari 30 data pengujian, dengan output berupa persentase kemungkinan penyakit yang dialami oleh tanaman kelapa sawit serta saran pemberantasannya. Hasil pengujian ini membuktikan bahwa sistem pakar yang dikembangkan mampu mengidentifikasi hama dan penyakit pada tanaman kelapa sawit secara efektif.  
STEM-integrated project-based learning: Students’ critical thinking skills in trigonometry Agung, Kristoforus Nofenaris; Siahaan, Meiva Marthaulina Lestari; Rika Handayani; Lailin Hijriani
Journal of Advanced Sciences and Mathematics Education Vol. 6 No. 1 (2026): Journal of Advanced Sciences and Mathematics Education
Publisher : CV. FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/jasme.v6i1.972

Abstract

Background: This study was motivated by the importance of critical thinking skill in solving problem and making the decision. In addition, low level of students’ critical thinking skills issue in mathematics learning, particularly in trigonometry Aims: To address this issue, a STEM-integrated Project-Based Learning (PjBL-STEM) model was implemented. Method: This study employed a mixed-method approach combining quantitative and qualitative data. The sample consisted of 50 tenth-grade students at SMA Negeri Manufui, divided into an experimental class; 25 students and a control class; 25 students. Data were collected through a critical thinking skills test, student response questionnaires, and interviews. Results: The results of the independent samples t-test showed a significant difference between the experimental and control classes (Sig. = 0.001 < 0.05). The mean posttest score of the experimental class (52.83) was higher than that of the control class (45.33). The N-Gain analysis indicated a low improvement category in both classes; however, the experimental class (26.29%) showed a higher increase compared to the control class (4.50%). Student responses toward the PjBL-STEM implementation were highly positive, with more than 90% agreement. Qualitative findings revealed that project-based experiences helped students recall concepts, identify reasoning errors, and reflect on problem-solving processes. Conclusion: STEM-integrated PjBL model was effective in improving students’ critical thinking skills and fostering active, collaborative, and meaningful learning. Continuous implementation supported by structured guidance and critical thinking exercises is recommended to achieve more optimal learning outcomes.
Co-Authors Agung, Kristoforus Nofenaris Agus Susanto Ahmad Luthfi Aldri Frinaldi Ana Fitri Ramadani Andi Muhammad Yaqkin Andi Muhammad Yaqkin Padjalangi Azmi Islami Baginda Restu Al Ghazali Darul Ilmi Dhiant Asri Dinda Imroatul Azizah Dinda Salsabila Ritonga Dini Nur Fibriana Eka Ramadhani Putra Ekayanti Hafidah Ahmad Endang Masitoh W Erise fatwa amaliya Fahruzi Sirait Fitrianingsih, Julia Fitriyani Nasution Halimah Tusakdiyah Harahap Halimah Tusyadiah Harahap Herman, Sriyana Hisbul maulana Holifah Intan Lestari Intan nur Fitriyani Isnaeni Isnaeni Jangga Junaidi Junaidi Kashardi, Kashardi Lailin Hijriani Mustamin Nadya Fitriani Nailatun Nailatun Nadrah Novica Jolyarni D Putri, Selfi Mahat Quratih Adawiyah Risnawati, Risna Rizky Amelya Furqan Sabri Sanghati Sangahti Saparuddin Latu Siahaan, Meiva Marthaulina Lestari Sidiq Purnomo, Agus SRI WULANDARI Suhendro Suhendro Tamira Tansy Timbuleng Tanjung, Rani Darma Sakti Taufiq Ramadhan Yantimala Mahmud Yuriska Destania Yusril Iza Mahendra Hasibuan Zainuddin