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Sustainable Water-Energy-Food Nexus Modeling to Anticipate Land Use Changes in Magelang Regency Kusworo, Zulfikar Aji; Sulaiman, Muhammad; Budiarto, Rachmawan
Journal of Renewable Energy, Electrical, and Computer Engineering Vol. 4 No. 2 (2024): September 2024
Publisher : Institute for Research and Community Service (LPPM), Universitas Malikussaleh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jreece.v4i2.16882

Abstract

This paper aims to analyze the integrated management of water, energy, and food resources within the context of the Water-Energy-Food (WEF) Nexus in Magelang Regency, Central Java, Indonesia. The focus is on the projections for electricity demand, water needs, and potential electricity production from microhydro power plants (PLTMH) by 2030. The methodology involved simulation models using the LEAP and WEAP software to create a conceptual management model that promotes sustainable resource use. Our findings project electricity needs in Magelang Regency to increase significantly, estimated at 79,626.3 MWh under the baseline business-as-usual scenario, 90,281.53 MWh for a moderate scenario, and 92,201.78 MWh under an optimistic scenario, with the moderate and optimistic scenarios representing increases of 13.38% and 15.79%, respectively, over the baseline by the end of the projection period. Concurrently, water demand is projected at 349,953,115 m³ under the baseline scenario and slightly less at 339,542,991 m³ considering the impact of the new Yogyakarta-Bawen toll road, with a variance of 3.07% between the scenarios by 2030. Additionally, the potential electricity production from the proposed PLTMH is projected at 590.67 MWh by 2030. These projections underscore the critical contributions of sustainable infrastructural developments such as PLTMH, which, despite regulatory support, have not yet been constructed in the regency. This research illustrates the need for robust planning and integration of sustainable practices within local governance to achieve the objectives outlined in the Sustainable Development Goals (SDGs), emphasizing the importance of sustainable and innovative solutions to meet future demand for these interconnected resources effectively.
Study of Wind Power Plant for Alternative Energy in Vannamei Litopeneaus Shrimp Cultivation Nisworo, Sapto; Pravitasari, Deria; Kusworo, Zulfikar Aji; Ashari, Ashari; Khan, Naseer A
Journal of Renewable Energy, Electrical, and Computer Engineering Vol. 2 No. 2 (2022): September 2022
Publisher : Institute for Research and Community Service (LPPM), Universitas Malikussaleh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jreece.v2i2.8565

Abstract

The focus of this research is to utilize wind energy for power generation as an electric power service for shrimp farming in the Kulon Progo district of Yogyakarta. This is done in order to minimize the use of diesel fuel in daily operations to drive the aerator pump that produces air bubbles and needs lighting. The method used is to calculate the need for electrical power in 24 hours, plan the windmill according to the local average wind speed. Parameters for measuring the final result are net present cost (NPC), cost of energy (CoE), and payback period. The scenario is used by installing a wind power generator compared to a generator from a diesel engine. The results of the study with a wind power generation system capable of producing 41755,07kW/year of power with the NPC value having a more efficient economic value of Rp. 158,254,000.00, a more efficient CoE value of Rp. 477.41, and for a diesel power plant of Rp. 1,569,015,240.00 and CoE worth Rp5,867,45. The payback period for the scenario with wind power is 3 years and 9 months and and 15 years 7 months for the scenario with diesel power plants.
Democratizing Climate Intelligence Through Localizez Large Language Models for Education and Governance Kusworo, Zulfikar Aji; Siregar, Widyana Verawaty; Ismail, Baharuddin; Hamdhana, Defry
VOCATECH: Vocational Education and Technology Journal Vol 8, No 1 (2026): April
Publisher : Akademi Komunitas Negeri Aceh Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38038/vocatech.v8i1.325

Abstract

 AbstractClimate change presents complex challenges in Indonesia, where local governments and communities frequently experience information asymmetry and limited access to expert knowledge, particularly in low-resource and low-connectivity regions. This study aims to develop and evaluate a localized, domain-adapted Large Language Model (LLM) that functions as offline-capable climate knowledge infrastructure for education and local governance in Indonesia. The research method employs a design science research methodology comprising four stages: (1) selection of Qwen3-4B as the base model, (2) curation of an Indonesian climate and energy transition corpus containing approximately 12,400 instruction-response pairs (~38 MB) drawn from national climate policy documents, NDC/RPJMN frameworks, renewable energy guidelines, and educational climate science texts, (3) parameter-efficient fine-tuning using QLoRA with LoRA rank r=16, alpha=32, learning rate 2e-4, 3 epochs, per-device batch size 2 with gradient accumulation 4, and 4-bit NF4 quantization, and (4) offline deployment on consumer-grade hardware with task-oriented evaluation against three baseline models (Qwen3-4B-Thinking, Gemma-3-4B, LLaMa-3.1-8B). The results show that the fine-tuned model (Qwen3-4B-REnewbie v1) achieved a 15.4% perplexity reduction on domain-specific test data and an average qualitative score of 9.3/10 across factual accuracy, reasoning structure, and Bahasa Indonesia language compliance, outperforming all baselines (score range 7.0–8.2). The system operates fully offline on consumer-grade hardware with acceptable inference latency. The conclusion drawn from this study is that localized, resource-efficient LLMs can function as practical climate knowledge infrastructure for vocational education and local governance in Indonesia, aligning with Green AI principles and supporting the democratization of climate intelligence in low-connectivity settings. AbstrakPerubahan iklim menghadirkan tantangan kompleks di Indonesia, khususnya bagi pemerintah daerah dan komunitas lokal yang sering mengalami asimetri informasi dan keterbatasan akses terhadap pengetahuan pakar di wilayah dengan sumber daya dan konektivitas terbatas. Penelitian ini bertujuan mengembangkan dan mengevaluasi Large Language Model (LLM) yang dilokalkan dan diadaptasi ke domain iklim sebagai infrastruktur pengetahuan iklim berbasis offline untuk pendidikan dan tata kelola lokal di Indonesia. Metode penelitian ini menggunakan pendekatan design science research yang meliputi (1) pemilihan Qwen3-4B sebagai base model, (2) kurasi korpus iklim dan transisi energi Indonesia berisi sekitar 12.400 pasangan instruksi-respons (~38 MB) dari dokumen kebijakan iklim nasional, kerangka NDC/RPJMN, panduan energi terbarukan, serta teks ilmiah iklim, (3) parameter-efficient fine-tuning berbasis QLoRA (LoRA rank r=16, alpha=32, learning rate 2e-4, 3 epoch, batch size 2 per perangkat dengan gradient accumulation 4, dan kuantisasi 4-bit NF4), dan (4) deployment offline pada perangkat keras kelas konsumen dengan evaluasi berorientasi tugas terhadap tiga baseline (Qwen3-4B-Thinking, Gemma-3-4B, LLaMa-3.1-8B). Hasil penelitian ini menunjukkan model hasil fine-tuning (Qwen3-4B-REnewbie v1) menghasilkan penurunan perplexity sebesar 15,4% pada data uji domain dan skor kualitatif rata-rata 9,3/10 pada dimensi akurasi faktual, struktur penalaran, dan kepatuhan Bahasa Indonesia, mengungguli seluruh baseline (kisaran 7,0–8,2), serta beroperasi sepenuhnya secara offline pada perangkat konsumen dengan latensi inferensi yang dapat diterima. Kesimpulan yang diperoleh dari penelitian ini adalah LLM yang dilokalkan dan hemat sumber daya dapat berfungsi sebagai infrastruktur pengetahuan iklim yang praktis bagi pendidikan vokasi dan tata kelola lokal di Indonesia, selaras dengan prinsip Green AI dan mendukung demokratisasi kecerdasan iklim di wilayah berkonektivitas terbatas.