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All Journal Jurnal TIKOMSIN (Teknologi Informasi dan Komunikasi Sinar Nusantara) Euler : Jurnal Ilmiah Matematika, Sains dan Teknologi Jurnal Pengabdian Masyarakat IPTEK Jurnal Hasil Pengabdian Masyarakat (JURIBMAS)
Retno Tri Vulandari
Universitas Tiga Serangkai
Computer Science & IT Education Electrical & Electronics Engineering Engineering Mathematics Social Sciences

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PENERAPAN METODE K-MEANS CLUSTERING UNTUK PENGELOMPOKAN SISWA BERDASARKAN PRESTASI DI SD N 03 SANGGANG SUKOHARJO Dika Restyanto; Kumaratih Sandradewi; Retno Tri Vulandari
Jurnal Teknologi Informasi dan Komunikasi (TIKomSiN) Vol 13, No 2 (2025): Jurnal Tikomsin, Vol 13, No.2, Oktober 2025
Publisher : STMIK Sinar Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30646/tikomsin.v13i2.1007

Abstract

The rapid advancement of data science has made data processing a critical requirement across various fields, including education. Educational institutions are increasingly required to leverage available resources and information systems to enhance competitiveness and support strategic decision-making. Student achievement is generally assessed through both theoretical and practical subjects; however, determining achievement groups (very good, good, sufficient) often lacks efficiency, limiting early identification by homeroom teachers. This study applies the K-Means Clustering method to classify students' achievement levels at SD N Sanggang 03. The objective is to develop a system that assists teachers in grouping students based on performance categories—very good, good, and sufficient—thereby supporting data-driven decision-making in academic evaluation. The system was implemented using PHP and MySQL, with evaluation employing the Modified Partition Coefficient to measure clustering quality.
Penguatan Identitas Visual UMKM Abon Dua Saudara melalui Kegiatan Desain Spanduk Aditya Bagas Pratama; Dwi Remawati; Retno Tri Vulandari; Kumaratih Sandradewi; Bramasto Wiryawan Yudanto
JURIBMAS : Jurnal Hasil Pengabdian Masyarakat Vol 5 No 1 (2026): Juli 2026
Publisher : LKP KARYA PRIMA KURSUS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62712/juribmas.v5i1.984

Abstract

The rapid development of technology in the modern era requires micro, small, and medium enterprises (MSMEs) to adapt in order to remain competitive, particularly in the area of marketing and information dissemination. Abon Dua Saudara MSME, which has operated for over twenty years in the food processing sector, faces challenges related to limited promotional media, resulting in low public awareness of its products. This community service activity aims to strengthen the visual identity of Abon Dua Saudara MSME through the design and development of promotional banners using CorelDraw. The method employed in this program includes needs assessment, design training, and direct assistance in creating effective and visually appealing banners. The activity focuses on improving participants’ skills in utilizing digital design tools to produce promotional media that are informative, attractive, and aligned with the business identity. The results of this program indicate an improvement in the MSME’s capability to create independent promotional materials, as well as an enhanced visual identity that supports broader market reach. In conclusion, the implementation of banner design activities contributes positively to strengthening the branding and promotional effectiveness of Abon Dua Saudara MSME. This initiative is expected to increase public awareness and support the sustainability and growth of the business.
Spatial Planning of Mosque-Based Ablution Water Reuse Networks in Lombok Barat Using K-Means Clustering and Minimum Spanning Tree Sutanto Sutanto; Retno Tri Vulandari; Tyas Titah Nareswari
Euler : Jurnal Ilmiah Matematika, Sains dan Teknologi Volume 14 Issue 1 April 2026
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/euler.v14i1.37246

Abstract

Lombok Barat Regency, located on Lombok Island, frequently experiences water scarcity due to its semi-arid climate and prolonged dry seasons. Agricultural and plantation activities in this region rely heavily on limited freshwater resources, particularly in dryland areas. Meanwhile, mosques continuously generate relatively clean greywater from daily ablution (wudu) activities. Despite its regular availability and relatively low contamination level, this resource remains largely underutilized. This study examines the spatial planning of mosque-based wudu water collection networks in West Lombok as a potential supplementary water source for plantation and dryland irrigation. A spatial analytical framework combining K-Means clustering and the Minimum Spanning Tree (MST) algorithm was applied and implemented through an interactive RShiny application. Spatial data from 940 mosques were preprocessed and analyzed. K-Means clustering at Level 1 grouped mosques into 25 local service clusters, while Level 2 clustering aggregated these clusters into five main reservoir zones. A cost-weighted MST based on Haversine distance was then used to estimate the minimum pipeline length required to connect mosques within the proposed network configuration. The results show that the modeled network connects all 940 mosques with a minimum total pipeline length of 411,757.28 meters and could potentially collect approximately 282,000 liters of reusable wudu water per day. However, the model represents a preliminary spatial planning framework and does not include hydraulic simulations, water quality validation, treatment system design, or operational feasibility assessment.
Transformasi Ekonomi Desa melalui Digital Marketing Pemuda Pelopor Desa Banyuanyar Kabupaten Boyolali Sutanto; Retno Tri Vulandari; Intan Rofiah; Fatin Fadila; Rahmatika; Amin Sulistiyowati
Jurnal Pengabdian Masyarakat IPTEK Vol. 6 No. 1 (2026): Edisi Januari 2026
Publisher : STMIK Triguna Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53513/abdi.v6i1.12230

Abstract

Pemanfaatan digital marketing di kalangan pemuda desa masih terbatas karena kurangnya pengetahuan dan keterampilan dalam branding serta pengelolaan media sosial. Padahal, Desa Banyuanyar, Kabupaten Boyolali memiliki potensi usaha lokal yang dapat berkembang melalui pemasaran digital yang tepat. Oleh karena itu, program pengabdian ini penting untuk meningkatkan kapasitas pemuda pelopor dalam mengoptimalkan strategi pemasaran digital guna mendukung pengembangan ekonomi desa secara berkelanjutan. Program pengabdian dilaksanakan melalui empat tahap: (1) Identifikasi Permasalahan melalui survei awal untuk mengetahui kendala peserta; (2) Pelatihan dan Workshop tentang konsep digital marketing, branding, strategi media sosial, dan penggunaan marketplace; (3) Pendampingan dan Implementasi strategi pada usaha masing-masing peserta; serta (4) Evaluasi Hasil untuk mengukur dampak program. Hasil kegiatan menunjukkan peningkatan signifikan dalam pemahaman digital marketing, pengelolaan akun bisnis digital, dan kenaikan omzet pada beberapa usaha peserta. Terbentuk pula komunitas digital marketing lokal untuk mendukung keberlanjutan program. Dengan demikian, kegiatan ini terbukti efektif dalam memberdayakan pemuda pelopor melalui penerapan strategi pemasaran digital yang tepat, sekaligus memperkuat pengembangan ekonomi desa.
Co-Authors Aditya Bagas Pratama Amin Sulistiyowati Bramasto Wiryawan Yudanto Dika Restyanto Dwi Remawati Fatin Fadila Intan Rofiah Kumaratih Sandradewi Kumaratih Sandradewi Rahmatika Sutanto Sutanto Tyas Titah Nareswari