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All Journal Jurnal Sains Teknologi dan Lingkungan (JSTL) Jurnal Gema Ngabdi
Cipta Ramadhani
Jurusan Teknik Elektro Fakultas Teknik, Universitas Mataram
Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Education Environmental Science Public Health Social Sciences

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Analisis Pola Spatio-Temporal Gempa Bumi di Zona Busur Belakang Utara Lombok–Flores Menggunakan Agglomerative Clustering Cipta Ramadhani; Made Sutha Yadnya; Paniran Paniran; Bulkis Kanata; Teti Zubaidah
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 11 No. 4 (2025): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v11i4.957

Abstract

This study aims to identify earthquake clustering patterns in the Northern Lombok–Flores Back-Arc Zone using the Agglomerative Clustering method. Seismic data were obtained from the United States Geological Survey (USGS) covering the period 1970–2021, using latitude, longitude, depth, and magnitude as clustering variables. A sliding window approach was applied to capture the temporal evolution of seismic activity. The results indicate the formation of three stable clusters that consistently represent different earthquake depth levels across all analyzed time windows. Although fluctuations in the occurrence of large-magnitude earthquakes were observed in several windows, these variations did not significantly affect the clustering structure. This study demonstrates that the combination of Agglomerative Clustering and a sliding window approach is effective for identifying depth-based earthquake clustering patterns and describing their temporal dynamics
Inovasi Pupuk Organik Dan Filter Biogas Berbasis Pengolahan Limbah Bio-Slurry Serta Limbah Baglog di Rumah Qur’an At-Tazkiyyah Made Sutha Yadnya; Cipta Ramadhani; Teti Zubaidah; Bulkis Kanata; Rosmaliati Rosmaliati
Jurnal Gema Ngabdi Vol. 8 No. 1 (2026): JURNAL GEMA NGABDI
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jgn.v8i1.677

Abstract

Sembalun Bumbung Village, East Lombok, faces the problem of river pollution due to the disposal of livestock manure and garbage (organic waste), which on the other hand has great potential to be processed into fertilizer and biogas as an alternative energy that is economical, environmentally friendly, and sustainable. A boarding school in the At-Tazkiyyah Sembalun Qur'an House which is also a center for community empowerment, in order to meet energy needs while reducing environmental pollution. The methods used include training and assistance to students and the community about the management of waste (organic waste), starting from fermentation, the use of fermented gas for cooking and electricity, to the use of residual waste as organic fertilizer, as well as community service programs aimed at designing and implementing an organic fertilizer processing system and biogas filter based on the treatment of bio-slurry waste and baglog waste at the At-Tazkiyyah Qur'an House Sigh. The program is holistic between the community and university institutions of the University of Mataram.
Program Perbaikan Instalasi Listrik Dan Fasilitas Pendukung Berbasis Komunitas Lokal Di Wisata Terintegrasi Gunung Jae Lombok Barat Ariel Apriansyah; Made Sutha Yadnya; Cipta Ramadhani; Agustono Setiawan; Ehza Jumiati; A. Sjamsjiar Rachman; I Nyoman Wahyu Satiawan
Jurnal Gema Ngabdi Vol. 8 No. 1 (2026): JURNAL GEMA NGABDI
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jgn.v8i1.678

Abstract

Gunung Jae Tourism Area in Sedau Village, West Lombok Regency, is a natural tourist destination that continues to develop but still faces limitations in basic infrastructure, particularly electrical installations and street lighting systems. These limitations reduce visitor safety, comfort, and restrict nighttime tourism activities. This community service program aimed to improve electrical infrastructure through electrical installation upgrades and the implementation of a community-based Street Lighting System (SLS). The implementation methods included site surveys, technical planning, material preparation, system installation, and functional testing. The program was carried out over two days involving lecturers, students, and local communities through a participatory approach. The results showed that the street lighting system was successfully installed and operated according to lighting standards. The program improved nighttime visibility in the tourism area, enhanced visitor safety, and supported local economic activities based on tourism development. In addition, the program strengthened students’ technical competencies and increased community awareness regarding safe, efficient, and sustainable electrical infrastructure management.
Co-Authors A. Sjamsjiar Rachman Agustono Setiawan Ariel Apriansyah Bulkis Kanata Ehza Jumiati I Nyoman Wahyu Satiawan Made Sutha Yadnya Paniran Paniran Rosmaliati Rosmaliati Teti Zubaidah