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All Journal ComEngApp : Computer Engineering and Applications Journal JSI: Jurnal Sistem Informasi (E-Journal) Jurnal Edukasi dan Penelitian Informatika (JEPIN) Annual Research Seminar E-Dimas: Jurnal Pengabdian kepada Masyarakat JURNAL MEDIA INFORMATIKA BUDIDARMA Jurnal ULTIMA InfoSys Sriwijaya Journal of Informatics and Applications Jurnal Generic Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat Jurnal Mandiri IT Edumatika
Buchari, Muhammad Ali
Program Studi Teknik Informatika Universitas Sriwijaya Palembang, Indonesia
Religion Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Engineering Languange, Linguistic, Communication & Media Library & Information Science Mathematics Nursing Public Health Social Sciences Other

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Perancangan Kunci Pintu otomatis dengan Personal Identification Number (PIN) Berbasis Mikrokontroler ATMega8535 untuk Siswa SMA Negeri 2 Banyuasin I Sarmayanta Sembiring; Hadir Kaban; Jorena Bangun; Beta Susanto Barus; Muhammad Ali Buchari
E-Dimas: Jurnal Pengabdian kepada Masyarakat Vol 13, No 4 (2022): E-DIMAS
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/e-dimas.v13i4.5902

Abstract

Telah dilaksanakan pelatihan perancangan kunci pintu otomatis dengan personal identification number (PIN) berbasis Mikrokontrler  ATMega8535 pada hari sabtu, tanggal tanggal 2 november tahun 2019 yang dilaksanakan di SMA Negeri 2 Banyuasin I. Kegiatan pelatihan ini bertujuan untuk menambah wawasan, minat, kreativitas dan inovasi kepada siswa dan menjadikan kegiatan pelatihan ini sebagai pemicu bagi siswa untuk berpartisipasi dalam kompetisi inovasi di bidang teknologi menggunakan mikrokontroler. Perangkat keras yang digunakan dalam pelatihan ini terdiri dari solenoid door lock, relay, keypad 3x4, LCD 16 x 2, push button switch, buzzer dan mikrokontroler ATMega8535. Perangkat lunak yang digunakan dalam pelatihan ini menggunakan Basic Compiler AVR. Pelatihan ini menghasilkan prototipe kunci pintu otomatis menggunakan PIN dan meningkatkan pemahaman siswa tentang aplikasi mikrokontroler. Peningkatan kemampuan siswa untuk menjawab pertanyaan dengan benar pada post test 45,5% dari sebelumnya hanya mampu menjawab dengan benar 21,5% pada pre test menunjukkan peningkatan pemahaman siswa tentang mikrokontroler dan aplikasinya.
Optimization of Tsukamoto FIS Using Genetic Algorithm for Rainfall Prediction in Banyuasin Regency Akbar, Muhammad Rafi; Miraswan, Kanda Januar; Rodiah, Desty; Buchari, Muhammad Ali; Marjusalinah, Anna Dwi
Sriwijaya Journal of Informatics and Applications Vol 5, No 2 (2024)
Publisher : Fakultas Ilmu Komputer Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/sjia.v5i2.118

Abstract

Indonesia, as a tropical country with high rainfall, heavily relies on accurate rainfall predictions for various critical purposes, including water resource management and extreme weather impact mitigation. One commonly used method is the Tsukamoto Fuzzy Inference System (FIS). However, implementing the Tsukamoto FIS often leads to high error rates. This is attributed to the difficulty in determining the boundaries of fuzzy variable membership functions. To address this issue, this research proposes an innovative approach by optimizing the boundaries of fuzzy membership functions using Genetic Algorithms (GA). The study resulted in a 49.02% reduction in the error rate, decreasing from 76.82% to 27.8%. This method significantly enhances rainfall prediction accuracy and contributes to the advancement of more sophisticated prediction methods. The optimization method proposed in this study also holds potential for application across various atmospheric science contexts.
Performance analysis of MobileNetV2 based automatic waste classification using transfer learning Firnando, Ricy; Buchari, Muhammad Ali; Marjusalinah, Anna Dwi; Willy; Abdurahman; Isnanto, Rahmat Fadli
Jurnal Mandiri IT Vol. 14 No. 1 (2025): July: Computer Science and Field.
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/mandiri.v14i1.451

Abstract

The significant increase in global waste requires innovative and accessible solutions, which aligns with Sustainable Development Goal (SDG) 12, which focuses on reducing the environmental impact of human activities. Automatic waste sorting using Computer Vision and Deep Learning offers a promising alternative to labor-intensive and risky manual methods. This study presents the design, implementation, and comprehensive performance analysis of an automated waste classification system, with a specific focus on evaluating its feasibility on hardware without specialized GPU accelerators. By leveraging transfer learning on a lightweight Convolutional Neural Network (CNN) architecture, MobileNetV2, a model was trained to classify six common waste categories: cardboard, glass, metal, paper, plastic, and other waste. The public “Garbage Classification” dataset from Kaggle, consisting of 2,527 images, was used as the basis for training and validation. The experiment was conducted using the tensorflow-cpu library, which does not require a dedicated GPU accelerator. After 10 training epochs, the model achieved a significant validation accuracy of 86.73%. Computational performance analysis showed an efficient average training time of 31.17 seconds per epoch and a fast average inference time of 14.47 milliseconds per image (~69 FPS) on the validation dataset. These findings demonstrate the feasibility of developing an effective AI-based waste classification system on hardware without a GPU accelerator, providing a realistic performance benchmark for the development of low-cost smart bins with embedded waste sorting solutions in the future, thereby contributing to sustainable waste management practices.
Pengembangan Sistem Informasi Penomoran Surat Berbasis Web untuk Digitalisasi Administrasi Kelurahan Plaju Darat Bayu Wijaya Putra; Lulu Usni Dwi Putri; Nabila Nabila; Aprillia Syafitri; Ezanovia Ezanovia; Yesinta Florensia; Muhammad Ali Buchari; Hasnan Afif; Rusdi Efendi; Dewi Sartika; Anna Dwi Marjusalinah; Sri Turatmiyah; Abdiansah Abdiansah; Karen Nazzua Putri Pratami
Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat Vol. 6 No. 2 (2026): Maret 2026 - Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat
Publisher : Indonesian Scientific Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59395/altifani.v6i2.1028

Abstract

Pengelolaan surat di Kelurahan Plaju Darat sebelumnya masih manual sehingga sering terjadi ketidakteraturan penomoran, keterlambatan pencarian arsip, dan rendahnya akurasi administrasi. Kegiatan pengabdian ini bertujuan menerapkan Sistem Informasi Penomoran Surat berbasis web untuk meningkatkan efisiensi dan akuntabilitas pelayanan. Pendekatan Participatory Action Research (PAR) digunakan melalui tahapan identifikasi masalah, analisis kebutuhan, pengembangan sistem, pengujian, pelatihan, dan evaluasi. Sistem dikembangkan menggunakan CodeIgniter dan MySQL, kemudian diuji dengan Black Box Testing serta User Acceptance Testing. Hasil pre-test menunjukkan rata-rata nilai 51 dan meningkat menjadi 86,13 pada post-test, atau peningkatan 68,88% setelah pelatihan. Evaluasi kepuasan pengguna menunjukkan skor sangat baik, berada pada rentang 4,35–4,65, dengan nilai tertinggi pada efisiensi pencarian arsip dan akurasi penomoran otomatis. Program ini berhasil meningkatkan kompetensi aparatur dan efektivitas administrasi, serta mendukung transformasi digital kelurahan.
Students' Problem-Solving Skills in Polyhedral Geometry with GeoGebra Augmented Reality Support Ruth Helen Simarmata; Muhammad Ali Buchari
Edumatika Vol 9 No 1 (2026): May 2026, Edumatika : Jurnal Riset Pendidikan Matematika
Publisher : Fakultas Tarbiyah dan Ilmu Keguruan IAIN Kerinci

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32939/ejrpm.v9i1.6903

Abstract

Background: Students often face difficulties in geometry learning, especially in topics that require students to interpret spatial objects and transform visual information into mathematical procedures including polyhedral geometry. Purpose: This study aims to analyze students’ mathematical problem-solving based on Polya’s framework in polyhedral geometry tasks within a GeoGebra Augmented Reality (AR)-supported. Method: This study used a mixed-method involving 30 eighth-grade students in Prabumulih. Data were collected through a mathematical problem-solving test, interviews, and classroom observation. Students’ responses were analyzed using a scoring rubric based on four stages of Polya’s problem solving: understanding the problem, devising a plan, carrying out the plan, and looking back. Findings: Most students fell into the medium problem-solving category (63.3%), with only 10% achieving the high category. While students performed best in understanding the problem, their primary difficulties lay in devising a plan and looking back. Implications: The integration of GeoGebra AR supports students in visualizing three-dimensional objects concretely. However, visual support alone is not sufficient to ensure complete problem-solving performance. Originality: The contribution of this study lies in a stage-by-stage diagnostic profile of students’ mathematical problem-solving in polyhedral geometry within a GeoGebra AR-supported learning environment.
Co-Authors A.A. Ketut Agung Cahyawan W Abdiansah, Abdiansah Abdurahman Abdurahman Akbar, Muhammad Rafi Anna Dwi Marjusalinah Anna Dwi Marjusalinah Aprillia Syafitri Ayu Ferdiyanti Bayu Wijaya Putra Beta Susanto Barus Desty Rodiah Dewi Sartika Dita Zhapira Ezanovia Ezanovia Firdaus Firdaus Gilbert Frans Wijaya Hadir Kaban Hasnan Afif Huda Ubaya Jambak, Muhammad Ihsan Jorena Bangun Kanda Januar Miraswan Karen Nazzua Putri Pratami Kartika Haritami Lulu Usni Dwi Putri M Aldi Ariqi Mahendra, Calvin Marjusalinah, Anna Dwi Mastura Diana Marieska Muhammad Rafly Hafizin Nabila Nabila Oktadini, Nabila Rizky Osvari Arsalan Putri Eka Sevtiyuni Rahmat Fadli Isnanto Ricy Firnando Rossi Passarela Rusdi Efendi Samsuryadi Samsuryadi Sarmayanta Sembiring Simarmata, Ruth Helen Sri Turatmiyah Willy Yesinta Florensia