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All Journal APTEK Scientific Journal of Informatics
Helmi Chazali Lubis
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Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Engineering

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Sensor Integration and ARIMA-Based Forecasting in WAQMS for Environmental Monitoring in Riau Province, Indonesia Warnia Nengsih; Cyntia Widiasari; Putri Madhona; Helmi Chazali Lubis; Indra Agus Lukman; T.Marlina Cahyani; Elnovrian Purnama Saghita; Muhammad Saputra; Felix Gary; Eki Haiyal'ulya; Irwan Chandra; Aulia Gusri Pratama; Eka Ariefyanto Putra; Rama Yoedha Satria; Shinta Utiya Syah
Scientific Journal of Informatics Vol. 12 No. 3: August 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sji.v12i3.24742

Abstract

Purpose: This study aims to develop an integrated solution for real-time environmental monitoring in Riau Province, Indonesia, where air and water quality are increasingly impacted by industrial, agricultural, and climatic factors. Existing monitoring systems are often limited by their lack of real-time capabilities and predictive analytics. Methods: To address this, we designed the Water and Air Quality Monitoring System (WAQMS), which integrates sensor-based data acquisition with the Autoregressive Integrated Moving Average (ARIMA) model for forecasting. Sensor units were deployed across three pilot locations—Kampar, Siak, and Pekanbaru—to continuously collect environmental data. The ARIMA model was applied to historical datasets to predict future trends in air and water quality, while a web-based dashboard was developed to visualize real-time data and forecasts. Result: Calibration results showed a system accuracy of 85%, surpassing the national threshold of 75% set by the Indonesian Ministry of Environment and Forestry. This validates the use of WAQMS for Air Pollution Standard Index (ISPU) classification. Novelty: The novelty of this study lies in the seamless integration of AQMS and WQMS within a unified predictive monitoring system, combined with a user-friendly interface for stakeholders. The results demonstrate the system's potential as a decision-support tool for local governments, offering timely insights and enabling more effective and sustainable environmental management.
Momentum tak terhingga model kominusi batubara Lukman Hakim Nasution; Helmi Chazali Lubis; Zulkarnain; Nazaruddin
Aptek Vol. 18 No. 1 (2025): Jurnal Apliksai Teknologi (APTEK): Volume 18, No. 01, Desember 2025
Publisher : Fakultas Teknik Universitas Pasir Pengaraian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30606/aptek.v18i1.4147

Abstract

Kominusi secara physical collision (hentaman fisik) melalui prinsip linier mometum dilakukan pada sampel batubara sub-bituminus dengan panjang 10mm, lebar dan tebal masing-masing 1mm. Jarak proses momentum adalah 100cm, tekanan udara 0.1bar hingga 3bar, dimana dinding landasan berdiameter 65mm. Perubahan ukuran sampel terjadi setelah momentum, dan selanjutnya dianalisis secara matematik dengan metode penskalaan per millimeter, berfaktorkan volume dan massa material, dimana dilakukan pada kondisi sebelum dan sesudah momentum. Hasil analisis membuktikan bahwa ukuran pecahan semakin besar jika semakin jauh dari titik pusat momentum dan sebaliknya. Namun jumlah momentum akhir dan distribusi pecahan sampel tidak terdefenisikan secara matematik (P⃗ ∞). Melalui metode penskalaan per millimeter yang dilakukan sebelum dan sesudah momentum berfaktorkan volume, massa dan ukuran akhir pecahan material, adalah alternatif untuk memprediksi kebutuhan energi, dan ukuran pecahan akhir yang ingin dicapai.
Co-Authors Aulia Gusri Pratama Cyntia Widiasari Eka Ariefyanto Putra Eki Haiyal'ulya Elnovrian Purnama Saghita Felix Gary Indra Agus Lukman Irwan Chandra Lukman Hakim Nasution Muhammad Saputra Nazaruddin Putri Madhona Rama Yoedha Satria Shinta Utiya Syah T.Marlina Cahyani Warnia Nengsih Zulkarnain