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All Journal Jurnal Sistem Komputer Kompak : Jurnal Ilmiah Komputerisasi Akuntansi Sistemasi: Jurnal Sistem Informasi SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan INTECOMS: Journal of Information Technology and Computer Science Kurios Riau Journal of Empowerment Jutisi: Jurnal Ilmiah Teknik Informatika dan Sistem Informasi Progresif: Jurnal Ilmiah Komputer Idealis : Indonesia Journal Information System Intervensi Komunitas: Jurnal Pengabdian Masyarakat Unri Conference Series: Community Engagement Journal of Applied Data Sciences Bulletin of Computer Science Research International Journal Software Engineering and Computer Science (IJSECS) Magistrorum et Scholarium: Jurnal Pengabdian Masyarakat Jurnal Kepariwisataan: Destinasi, Hospitalitas dan Perjalanan
Suharyadi
Universitas Kristen Satya Wacana
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology Nursing Public Health Social Sciences Other

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Analisis Spasial Temporal Pola Gempa Bumi Menggunakan GIS dan Visualisasi Peta Animasi Mahreza Rakha Indra Putra; Suharyadi Suharyadi
Bulletin of Computer Science Research Vol. 6 No. 4 (2026): June 2026
Publisher : Forum Kerjasama Pendidikan Tinggi (FKPT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47065/bulletincsr.v6i4.1128

Abstract

Central Aceh Regency is one of the regions in Aceh Province influenced by the tectonic activity of the Sumatra Fault, resulting in relatively high seismic activity. This study aims to analyze the spatial and temporal changes in earthquake patterns in Central Aceh Regency during 2004–2015 using Geographic Information Systems (GIS) and animated map visualization. The data used in this study were obtained from the United States Geological Survey (USGS) and the Meteorology, Climatology, and Geophysics Agency (BMKG) in CSV format, including parameters such as event time, magnitude, depth, latitude, and longitude. The research stages consisted of data preprocessing, data de-duplication, Kernel Density Estimation (KDE) analysis, spatial-temporal analysis, and visualization using the QGIS Temporal Controller. The coordinate system applied in this study was WGS 84 (EPSG:4326). The results indicate a shift in earthquake epicenter distribution from the northwest toward the southeast of Central Aceh during the observation period. In 2004, 2,006 earthquake events were recorded with an average magnitude of 4.49 Mw and an average depth of 84.82 km, while in 2015, 116 events were recorded with an average magnitude of 5.1 Mw and an average depth of 30 km. Heatmap analysis revealed increasing seismic concentration near the active Sumatra Fault zone. The animated map visualization successfully illustrated the temporal dynamics of seismic activity and can support spatial-based disaster mitigation planning. The main contribution of this study is the development of a GIS-based spatial-temporal analysis model that not only presents earthquake point distribution but also dynamically shows changes in seismic concentration through heatmaps and animated visualization. The findings can serve as an initial basis for identifying earthquake-prone zones and supporting spatial data-based disaster mitigation planning.
Pelatihan OBS untuk Peningkatan Mutu Layanan Streaming Ibadah Di GKI Tegalrejo Salatiga Suharyadi; Teguh Indra Bayu; Irwan Sembiring
Magistrorum et Scholarium: Jurnal Pengabdian Masyarakat Vol. 5 No. 3 (2025)
Publisher : Universitas Kristen Satya Wacana Salatiga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/jms.v5i32025p302-311

Abstract

Pandemi COVID-19 telah mengubah cara gereja menyampaikan pelayanan ibadah kepada jemaatnya. Salah satu upaya adaptasi yang dilakukan oleh GKI Tegalrejo Salatiga adalah menyediakan layanan streaming ibadah agar jemaat tetap dapat mengikuti ibadah secara daring. Namun, kualitas teknis penyiaran menjadi tantangan utama, sehingga diperlukan pelatihan penggunaan perangkat lunak Open Broadcaster Software (OBS) untuk meningkatkan mutu layanan streaming. Artikel ini melaporkan hasil kegiatan pengabdian masyarakat yang berfokus pada pelatihan OBS untuk tim multimedia gereja. Pelatihan ini mencakup pengenalan fitur OBS, teknik pengaturan kamera, audio, dan tata letak visual yang mendukung siaran yang lebih berkualitas. Hasil dari pelatihan menunjukkan peningkatan signifikan dalam kualitas streaming ibadah, baik dari segi tampilan visual, kestabilan siaran, maupun pengelolaan sumber daya teknis oleh tim multimedia.
Super Encryption Cryptography for Land Certificate Data Security: A Case Study of the Jayapura City Land Agency Ray Setiawan Panyuwa; Suharyadi Universitas Kristen Satya Wacana
International Journal Software Engineering and Computer Science (IJSECS) Vol. 5 No. 3 (2025): DECEMBER 2025
Publisher : Lembaga Komunitas Informasi Teknologi Aceh (KITA), Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35870/ijsecs.v5i3.5652

Abstract

This study introduces a lightweight, reproducible super-encryption framework designed to protect land certificate owner data at the Jayapura City Land Office. The system combines two classical algorithms—Rail Fence Cipher for transposition and Vigenère Cipher for substitution—through a structured, layered encryption pipeline implemented in Python. Testing was conducted on 50 simulated certificate owner names (10–15 characters each) under controlled conditions (Intel i5, 8 GB RAM, Windows 10). Black-box validation demonstrated 100% decryption accuracy with sub-10 ms total processing time per record. Robustness assessments revealed an average Shannon entropy increase of 41.6% and an avalanche rate of 47.8%, indicating enhanced ciphertext randomness. Results confirm that strategically layering classical ciphers delivers reliable confidentiality and integrity for small-scale, non-transactional datasets characteristic of land administration offices operating under resource constraints. The research offers a transparent, replicable model for securing identity fields and demonstrates the practical viability of super-encryption as a computationally efficient cryptographic solution for local government digital systems
Analysis of INLISLite Management based on the COBIT 2019 DSS01 Domain at the Salatiga City Library and Archives Office Capella Auriga Chrisanty; Suharyadi Suharyadi
SISTEMASI Vol 15, No 7 (2026): Sistemasi: Jurnal Sistem Informasi
Publisher : Universitas Islam Indragiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32520/stmsi.v15i7.6650

Abstract

The utilization of information technology in library services plays a crucial role in improving operational efficiency and the quality of public services. The Salatiga City Library and Archives Office has implemented INLISLite as its integrated library automation system to support the management of library collections, membership, and circulation services. However, the effectiveness of the system largely depends on the quality of its operational management. This study aims to analyze the operational management of the INLISLite system based on the COBIT 2019 framework, specifically the DSS01 (Managed Operations) management objective. A qualitative descriptive research approach was employed, with data collected through interviews, observations, and document analysis. The evaluation focused on the five DSS01 management practices: Perform Operational Procedures, Manage Outsourced IT Services, Monitor IT Infrastructure and Operations, Manage Environmental Conditions, and Manage Facilities. The findings indicate that the operational management capability of INLISLite is predominantly at Capability Level 1 (Performed Process) for DSS01.01, DSS01.02, and DSS01.04, while DSS01.03 and DSS01.05 have achieved Capability Level 2 (Managed Process). These results suggest that although most operational processes have been implemented, they have not yet been fully standardized or systematically documented. Therefore, improvements are required through the development of dedicated Standard Operating Procedures (SOPs), enhanced IT infrastructure monitoring, strengthened management of outsourced IT services, improved supporting facilities, and more robust backup and risk mitigation procedures to achieve the target Capability Level 3 (Defined Process) in accordance with the IT governance principles of COBIT 2019.
Co-Authors Ade Iriani Adriyanto Juliastomo Gundo Agus Sugiarto Agus Supratikno Alviandri Umbu Kora Capella Auriga Chrisanty Chatarina Umbul Wahyuni Cheryl Louisa Loedwyca Danny Manongga Dwika Agatha Putrisa Eko Sediyono Evi Maria Hendry Irwan Sembiring Irwan Sembriring Mahreza Rakha Indra Putra Martin Setyawan Paminto Agung Christianto Purwanto Ray Setiawan Panyuwa Rini Kartika Hudiono Santamajati, Santamajati Stephanie Gabriella Wijaya Susanto, Eko Budi Sutarto Wijono Teguh Indra Bayu Teguh Wahyono Theopillus J. H. Wellem Tintien Koerniawati Yessica Nataliani