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All Journal IJITEE (International Journal of Information Technology and Electrical Engineering) Jurnal Atma Inovasia
MEILAN JIMMY HASUGIAN
Program Studi Teknik Elektro, Universitas Kristen Maranatha
Humanities Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Environmental Science Social Sciences Other

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Feature Extraction Comparison in Handwriting Recognition of Batak Toba Alphabet Novie Theresia Br Pasaribu; M. Jimmy Hasugian
IJITEE (International Journal of Information Technology and Electrical Engineering) Vol 1, No 3 (2017): September 2017
Publisher : Department of Electrical Engineering and Information Technology,Faculty of Engineering UGM

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2000.519 KB) | DOI: 10.22146/ijitee.31969

Abstract

Offline handwriting recognition is one of the most prominent research topics due to its tremendous application and high variability as well. This paper covers the offline Batak Toba handwritten text recognition, from the noise removal, the process of feature extraction until the recognition by using several classifiers. Experiments show that elliptic fourier descriptor (EFD) is the most discriminative feature and Mahalanobis distance (MD) outperforms the two others classifier.
Petualangan Energi Angin Bersama Anak Rumah Singgah Erwani Merry Sartika; Meilan Jimmy Hasugian; Markus Tanubrata; Novie Theresia Br. Pasaribu; Herawati YS; Arvin Ezekiel Denri Utama; Dido Hardinanto Ginting; Jeffrey Christopher; Yehuda Njuah Sectio Cibro
Jurnal Atma Inovasia Vol. 6 No. 1 (2026)
Publisher : Lembaga Penelitian dan Pengabdian pada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jai.v6i1.12212

Abstract

The wind energy adventure with children from the shelter home has become the focus of a community service initiative aimed at elementary school children in the Cibogo area. The need for alternative forms of learning to stimulate interest and engagement among children at the shelter inspired the application of science using a wind power car as the central theme of this community service program. The activity was conducted using an experimental method, training the children to observe, design tools, measure results, and draw conclusions from the objects they created—ranging from mechanical components to the drive system—through hands-on experimentation. The outcomes of this wind energy adventure had a positive impact on the children, the service team, and the surrounding community, fostering awareness of the importance of experiment-based education and providing valuable knowledge to all participants involved.
Kapsul Gravitasi sebagai Media Eksperimen Fisika Sederhana untuk Anak SD di Rumah Singgah Erwani Merry Sartika; Meilan Jimmy Hasugian; Markus Tanubrata; Novie Theresia Br. Pasaribu; Herawati YS; Arvin Ezekiel Denri Utama; Dido Hardinanto Ginting; Jeffrey Christopher; Yehuda Njuah Sectio Cibro
Jurnal Atma Inovasia Vol. 5 No. 6 (2025)
Publisher : Lembaga Penelitian dan Pengabdian pada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jai.v5i6.12213

Abstract

The gravity capsule served as the main object of focus in a community service activity aimed at introducing science to children in the Cibogo Bandung shelter, specifically targeting first and second-grade elementary school students. The service learning method was employed to ensure the learning process remained simple and accessible, considering the young age of the participants. A basic experiment using the gravity capsule was conducted to introduce fundamental science concepts such as gravity, energy, and momentum. The outcome of this community service activity was considered successful, with a comprehension rate of 78.5%, based on responses to questions covering the materials delivered. However, improvements are still needed to enhance content retention among participants. Additionally, requests from the partner community for the program to be conducted regularly form the foundation for the sustainability of this initiative.
Pembelajaran STEM Berbasis Proyek Menggunakan Media Jembatan Berlampu Erwani Merry Sartika; Markus Tanubrata; Olga Catherina Pattipawaej; Rainisa Maini Heryanto; Meilan Jimmy Hasugian; Novie Theresia Br. Pasaribu; Dido Hardinanto Ginting; Gibran Qodri Nurfalah; Muhamad Dani Ardiansyah
Jurnal Atma Inovasia Vol. 6 No. 4 (2026)
Publisher : Lembaga Penelitian dan Pengabdian pada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jai.v6i4.14215

Abstract

This community service activity aimed to enhance elementary school students’ understanding of bridge structural concepts and simple electrical circuits through individual project-based STEM learning. The activity was conducted with Grade 3–4 students in the Cibogo area, utilizing simple materials such as popsicle sticks, LEDs, wires, batteries, and switches as learning media. The methodology integrated community-based research, participatory learning, and action research approaches, in which the activities were designed based on the needs of the target community, actively engaged students in the learning process, and incorporated reflective practices for continuous improvement. Evaluation was carried out using a questionnaire to assess students’ understanding of bridge structures, simple electrical circuits, and their responses to the activity. The evaluation results indicated that most students were able to comprehend the fundamental concepts introduced and showed positive responses to the project-based learning activities (85% for bridge construction and 78% for electrical circuits). In addition to improved conceptual understanding, students demonstrated high levels of interest and enthusiasm throughout the activity. It can be concluded that this activity was effective in providing meaningful and contextual learning experiences. Future implementations may be further developed by strengthening introductory materials and diversifying project models to enhance the quality and sustainability of STEM learning in elementary school environments.
Co-Authors Arvin Ezekiel Denri Utama Dido Hardinanto Ginting Erwani Merry Sartika Gibran Qodri Nurfalah Herawati YS Jeffrey Christopher Markus Tanubrata Muhamad Dani Ardiansyah Novie Theresia Br. Pasaribu Olga Catherina Pattipawaej Rainisa Maini Heryanto Yehuda Njuah Sectio Cibro