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All Journal Jurnal Rekayasa Mesin International Journal of Community Service Learning Community Empowerment Venus: Jurnal Publikasi Rumpun Ilmu Teknik Spektrum Industri
Montreano, Donny
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Utilization training of rice husk waste as alternative energy in Baros District, Serang, Indonesia Cholis, Nur; Lukmana, M. Arifudin; Fahrudin, Fahrudin; Montreano, Donny
Community Empowerment Vol 6 No 5 (2021)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (479.952 KB) | DOI: 10.31603/ce.4480

Abstract

Farmer groups in Baros District, Serang Regency face a problem where a rice husk waste has accumulated and there has been no effort to process it into economic value products. One solution is to use rice husk waste into briquettes. Rice husk briquettes are obtained by burning dry biomass with a little air (carbonization). The method of implementing the activities carried out was by extension and demonstration of making briquettes. This activity was able to increase the knowledge and skills of the management and members of the Baros independent farmer group in the use of rice husks as an alternative energy source in the form of briquettes.
The Design of 3 GT Fishing Vessels Using DC Electric Power as Driving and Electricity Sudjasta, Bambang; Suranto, Purwojoko; Montreano, Donny; Rizal, Reda
Jurnal Rekayasa Mesin Vol 16, No 3 (2021): Volume 16, Nomor 3, Desember 2021
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v16i3.2600

Abstract

The purpose of this study was to design a 3 Gross Tonnage (GT) fishing boat with a speed of 6 knots to obtain the shape and size of the vessel that is suitable for the water area that using the solar panel energy system. The ship was planned to travel about a maximum of 18 Km from the departure point. The steps of the research method for the design of fishing vessels include determining the principal size of the ship, making line drawings, drafting a general plan, construction design, ship tonnage capacity, electricity requirements, and then designing solar panel energy systems. This research resulted in a ship design with a length of 8 meters, 1.75 meters wide, and 1.3 meters high. Those specifications are used as constraints to determine the number of solar panels and batteries. To satisfy all of the goals, the 3 GT boat has limited 0.9KWh solar panels to travel for 9.7 NM (18 KM) at a speed of 6 knots, forcing daytime and night fishing fishermen to idle for 1 day. The difference is in the number of night fishing batteries that are 49% more than the daytime fishing which using 25 pcs 3.2V 100Ah. With the use of 51 pcs of battery, night fishing can move into daytime fishing so that it can fish more frequently than night fishing mode only
Model Prediksi Harga Cabai Merah Besar Di Tingkat Produsen Periode 2022-2024 Dengan Metode Supervised Learning Menggunakan Orange Data Mining Montreano, Donny; Redian Wahyu Elanda; Harditriyono Putra
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 3 No. 1 (2025): Venus: Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v3i1.697

Abstract

Abstract. From the perspective of Micro, Small, and Medium Enterprises (MSMEs), fluctuations in raw material prices are highly concerning as they can significantly impact business stability. While MSMEs may tolerate price fluctuations to some extent, from an industrial engineering perspective, such a passive approach contradicts the principles of continuous improvement. This study seeks to predict the price of large red chili peppers using five regression models implemented through Orange Data Mining: Linear Regression, Support Vector Machine, Decision Tree, k-Nearest Neighbors (kNN), and Gradient Boosting. Due to the limited availability of daily data, particularly within a daily timeframe, the study utilized weekly data spanning three years. The results of the Test and Score evaluation shows Gradient Boosting as the best-performing model, achieving a Mean Absolute Percentage Error (MAPE) of 0.7%. However, the MAPE for predictions in January 2025 increased to 15.8%. This error is expected to decrease as more weekly data becomes available to mitigate the inaccuracies inherent in this model. Keywords: prediction, red chilli, regression, supervised learning , orange data mining. Abstrak. Dalam perspektif UMKM, fluktuasi harga bahan baku adalah suatu hal yang paling ditakuti karena berakibat pada ketahanan usaha yang menjadi tidak menentu. Pada suatu kondisi, fluktuasi harga dapat diterima para UMKM, namun dalam perspektif teknik industri, sikap UMKM tersebut tidak sesuai prinsip continuous improvement. Penelitian ini mencoba untuk memprediksi harga cabai merah besar dengan menggunakan 5 model regresi dibantu Orange Data Mining. Yaitu Linear Regression, Support Vector Machine, Tree, kNN, Gradient Boosting. Data yang diperlukan sebagian besar tidak tersedia, khususnya dalam kerangka waktu harian sehingga penelitian ini menggunakan data mingguan selama 3 tahun. Hasil Test and Score menunjukkan model Gradient Boost terpilih menjadi model terbaik dengan tingkat MAPE 0.7% namun MAPE pada tahap Prediction di bulan Januari 2025 menjadi 15.8%. Error tersebut akan berkurang ketika data mingguan sudah cukup banyak untuk menambal kesalahan yang dihasilkan model ini Kata kunci: prediksi, cabai merah, regression, supervised learning , orange data mining.
Pemberdayaan Masyarakat Pesantren tentang Sel Surya untuk Fasilitas Listrik di Desa Sekarwangi, Cibadak, Sukabumi Jawa Barat Montreano, Donny; Waluyo, Mohammad Rachman; Rizal, Reda
International Journal of Community Service Learning Vol. 2 No. 4 (2018): November 2018
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (503.298 KB) | DOI: 10.23887/ijcsl.v2i4.16244

Abstract

Pemerintah menargetkan 10.300 desa teraliri listrik pada 2019. Pada 2019, peningkatan rasio elektrifikasi nasional ditargetkan menjadi 97 persen. Melalui Kementerian Energi dan Sumber Daya Mineral (ESDM), meluncurkan Program Indonesia Terang (PIT) dalam rangka memenuhi target peningkatan rasio elektrifikasi nasional dari 85 persen pada tahun 2015 menjadi 97 persen di tahun 2019. PIT juga menjadi bagian dari target pemerintah yang menyediakan akses penerangan bagi masyarakat Indonesia secara merata melalui pembangunan pembangkit 35.000 MW. Dalam rilis pers Kementerian ESDM pada 28 Februari 2016, disebutkan bahwa hingga saat ini, masih ada 12.659 desa tertinggal yang belum memperoleh akses listrik dari jaringan Perusahaan Listrik Negara (PLN), bahkan 2.519 desa diantaranya belum terlistriki sama sekali. Desa-desa ini sebagian besar tersebar di Provinsi Papua dan di kawasan Indonesia Timur lainnya. Populasi penduduk rata-rata sedikit dengan tingkat kepadatan yang rendah, akibatnya membangun jaringan listrik menjadi sangat mahal dan membuat hitung-hitungan ekonomi menjadi rugi. Pemerintah perlu memberikan perhatian lebih khusus kepada masyarakat di desa-desa tertinggal ini supaya mereka dapat segera terlayani listrik, tanpa kebijakan dan aksi yang berpihak, desa-desa tersebut mustahil bisa mengakses listrik sesuai target yang telah dicanangkan.
Open Field Layout Problem Using Hybrid Approaches: A Systematic Review Montreano, Donny; Daihani, Dadan Umar; Septiani, Winnie; Suhardini, Didien
Spektrum Industri Vol. 23 No. 2 (2025): Spektrum Industri - October 2025
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/si.v23i2.439

Abstract

The Open Field Layout Problem (OFLP) is a free-configuration layout problem characterized by the absence of floor constraints and an unlimited number of potential solutions. This systematic literature review analyzed over 3,000 Scopus-indexed articles using the keyword "facility layout problem" and related terms, identifying 154 studies that applied hybrid approaches. Terms such as two-stage, multi-stage, or similar variations were classified accordingly. The review revealed that OFLP is not a monolithic concept but comprises five principal types: (1) layouts without aisles or floor boundaries, (2) tightly packed layouts with minimal spacing, (3) layouts with aisles and large residual space, (4) layouts with aisles and floor boundaries, and (5) layouts with aisles but no floor boundaries. The first type is most commonly addressed, while the fifth remains underexplored. This classification highlights a critical research gap and points to opportunities for advancing from low- to high-level hybrid strategies
Co-Authors Dadan Umar Daihani Didien Suhardini Fahrudin Fahrudin Harditriyono Putra Lukmana, M. Arifudin Mohammad Rachman Waluyo Nur Cholis Reda Rizal Redian Wahyu Elanda Sudjasta, Bambang Suranto, Purwojoko Winnie Septiani