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All Journal IAES International Journal of Artificial Intelligence (IJ-AI) Jurnal Teknik Elektro Rekayasa Mesin Sinergi Proceeding of the Electrical Engineering Computer Science and Informatics Jurnal Rekayasa Sipil dan Lingkungan JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) Jurnal Sustainable: Jurnal Hasil Penelitian dan Industri Terapan Elsains : Jurnal Elektro SENTIA 2016 SENTIA 2015 Jurnal Intake : Jurnal Penelitian Ilmu Teknik dan Terapan Jurnal Karinov JE-Unisla Civilla : Jurnal Teknik Sipil Universitas Islam Lamongan Jurnal Tecnoscienza Jurnal Riset Rekayasa Elektro Frontier Energy System and Power Engineering Community Development Journal: Jurnal Pengabdian Masyarakat Indonesian Journal of Engagement, Community Services, Empowerment and Development (IJECSED) JEEE-U (Journal of Electrical and Electronic Engineering-UMSIDA) Indonesian Collaboration Journal of Community Services (ICJCS) Prosiding Konferensi Nasional PKM-CSR ALINIER: Journal of Artificial Intelligence & Applications Jurnal Fortech SinarFe7 Journal FORTEI-JEERI Sewagati E-Amal: Jurnal Pengabdian Kepada Masyarakat Jurnal FORTECH Journal of Renewable Energy and Smart Device Jurnal JEETech DIMAS-UNDAR Nucleus Journal
Machrus Ali
Universitas Darul Ulum
Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mathematics Mechanical Engineering Nursing Public Health Social Sciences Transportation Other

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Development of an ANFIS-Based Method to Improve the Accuracy of Owner’s Estimated Cost in Construction Cost Management Markhaban Siswanto; Machrus Ali
Civilla : Jurnal Teknik Sipil Universitas Islam Lamongan Vol 11 No 1 (2026): MARET
Publisher : Program Studi Teknik Sipil, Fakultas Teknik, Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/cvl.v11i1.1636

Abstract

An inaccurate Owner’s Estimate Cost (OEC) often triggers procurement failures in the purchasing process, thereby affecting cost performance and the success of government capital expenditure projects in Indonesia from a construction management perspective. The OEC serves as the primary benchmark for assessing the reasonableness of bids in construction procurement; calculation errors may lead to ineffective cost control, financial mismanagement, and regulatory non-compliance. Therefore, this study aims to improve OEC accuracy by developing an Adaptive Neuro-Fuzzy Inference System (ANFIS) model supported by a Linear Regression (LR) algorithm to predict price fluctuations that influence cost planning and procurement decisions for public building projects. Project data from state-owned building construction and unit price analysis data for the 2021–2024 period were analyzed to predict 2025 price changes (addenda) for various construction work items. The proposed model achieved strong accuracy, with Root Mean Squared Error (RMSE) values of 0.0108–0.0333 and Mean Absolute Error (MAE) values of 0.0099–0.0261 across multiple work descriptions, indicating a good model fit. These findings confirm that the model outperforms comparable studies in terms of precision and interpretability, and can serve as a data-driven approach to strengthen cost management, estimate planning, and procurement decision-making in construction management.
Optimasi Pembangkitan Ekonomis Berbasis Whale Optimization Algorithm Pada Sistem Multimesin Hidayatul Nurohmah; Arya Sula Cakra Buana; Rukslin Rukslin; Machrus Ali; Muhammad Ruswandi Djalal
Jurnal FORTECH Vol. 6 No. 2 (2025): Jurnal FORTECH
Publisher : FORTEI (Forum Pendidikan Tinggi Teknik Elektro Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56795/fortech.v6i2.6102

Abstract

This study addresses the problem of generation cost optimization for thermal power plants in the Sulbagsel multimachine power system. An advanced swarm intelligence approach, the Whale Optimization Algorithm (WOA), is employed as the primary optimization technique. WOA, inspired by the bubble-net hunting strategy of humpback whales, has emerged as a promising metaheuristic with strong capabilities in exploration and exploitation. The main objective of this study is to minimize thermal generation costs while ensuring effective performance under real system operating conditions. To provide a comparative benchmark, Particle Swarm Optimization (PSO) is also applied to the same problem. Statistical evaluation is conducted to assess convergence behavior, accuracy, and consistency of both methods. The results indicate that WOA demonstrates superior balance between exploration and exploitation, leading to stable convergence and reliable solutions. Under peak daytime load conditions, PSO achieves a cost reduction of 23.02%, whereas the proposed WOA-based method achieves a comparable reduction of 23.78%. Although PSO yields a slightly higher cost saving, WOA demonstrates stronger robustness and statistical reliability across multiple trials. These findings confirm that WOA is a competitive alternative for generation cost optimization in complex multimachine systems, offering significant potential for future applications in economic dispatch problems with larger-scale renewable energy integration.
Lighting Installation System Design in the Parking Area of Prof. Dr. Soekandar Mojokerto Regional Hospital Based on Dialux Software: Desain Sistem Instalasi Penerangan pada Area Parkir RSUD Prof Dr Soekandar Mojokerto berbasis Dialux Software Budi Utomo; Dwi Ajiatmo; Hidayatul Nurohmah; Machrus Ali
JEEE-U (Journal of Electrical and Electronic Engineering-UMSIDA) Vol. 10 No. 2 (2026): Oktober
Publisher : Muhammadiyah University, Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/jeeeu.v10i1.1744

Abstract

This study aims to design an optimal lighting installation system for the parking area of RSUD Prof. Dr. Soekandar Mojokerto by using DIALux Evo as a lighting simulation tool. The existing lighting system employs three 150 W High Pressure Sodium (HPS) lamps and does not meet the parking area lighting standard specified in SNI 7391:2008. The simulation results of the existing condition indicate an average illuminance of 35.3 lux, an average luminance of 3.37 cd/m², a uniformity ratio of 0.005, and a Unified Glare Rating (UGR) of 25. To improve the lighting performance, a redesign was carried out using 17 units of 57 W LED lamps. The simulation results of the proposed design show significant improvement, with an average illuminance of 96.5 lux, an average luminance of 9.21 cd/m², a uniformity ratio of 0.37, and a glare level of 19. Although the energy consumption increased from 5.4 kWh to 11.628 kWh, this increase is proportional to the improvement in lighting quality. The results indicate that the use of LED lamps provides brighter, more uniform, and more visually comfortable lighting while complying with the applicable standards. Therefore, the DIALux Evo-based lighting design is recommended for implementation in hospital parking areas and similar public facilities.
Co-Authors A.A. Ketut Agung Cahyawan W A.N. Afandi Achmad Afandi Achmad Muzajjad Achmad Zaini Achmad. Zaini Agus Raikhani Agus Raikhani Agus Raikhani Agus Raikhani Agus Raikhani Agus Raikhani Agus Raikhani, Agus Ahmad Ali Syaifudin Ahmad Fajar Rohmatullah Ahmad Fathurrobbani Ahmad Fauzi Ridhwan Ahmad Fauzi Ridhwan Alysia, Agnes Amir Maliki Abitolkha Andi Imran Andini, Tarrisma Delvy Angga Yodhas Tangkara Arga Prabowo Anshoruddin, Ilham Ardi Junianto Ardiyan Abi Winata Ardiyan Abi Winata Arfaah, Saiful Ari Octaviyan Arif Rahman Sujatmika Arrohman, Muhammad Arya Sula Cakra Buana Askan Askan Askan Askan Askan, Askan Aslichah aslichah aslichah Asnun Parwanti Asnun Parwati Avi Maida W Bima Aulia Firmandani Budi Utomo Budiman Budiman Budiman Budiman Budiman Budiman Budiman Budiman Budiman Cahyono, Iwan Cakra Buana, Arya Sula Cakra Buana, Arya Sulka Choiruddin Choiruddin Cholil Hasyim Ciptian Weried Priananda Dandy Tulus Herlambang Dannel Ramadhan Delief Wida Khaidir Dian Maharani Dimas Fajar Uman Putra Dina Mariani Dwi Ajiatmo Dwi Ajiatmo Dwi Ajiatmo Dwi Ajiatmo Dwi Ajiatmo Dwiana Hendrawati Dyah Rakhwati Tri Atmayanti Enggal Indra Gunawan F Yudi Limpraptono Fachrudin Hunaini Fahmi, Tubagus Faisal Faisal Fajardika, Risky Fariz Rifqi Zul Fahmi Farrel Candra W.A Febrian Rizal Anas Firda Amalia Firdaus, Aji Akbar Fresy Nugroho Fuad Dwi Hanggara Hadi Suyono Hadi Suyono Hamzah Arof Hari Sufitrihansyah Hari Sufitrihansyah Hasib Al-Isbilly, M. Hendi Sopian Hendi Sopian Hendro Dripoyono Hendro Dripoyono Herlambang Setiadi Hidayatul Nurohmah Hidayatul Nurohmah Hidayatul Nurohmah Hidayatul Nurohmah Hidayatul Nurohmah Hidayatul Nurohmah Hidayatul Nurohmah, Hidayatul Hofman Darmawan Ilham Anshoruddin Imam Robandi Iwan Cahyono Izzatul Umami Izzatul Umami Jatmiko, Anang Kadaryono Kadaryono Kadaryono Kadaryono Kadaryono Kadaryono, Kadaryono, Kadaryono Kholish Fadlili Kholish Ghoutsul Fadlili Lantip Trisunarno Latiana, Eka Laudhie Primadonni Kusumajaya Luqman Hakim Luqman Hakim M Agil Haikal M Ibrahim M Ibrahim M. Ibnu Masrur M. Ibnu Masrur M. Teguh Proyoga Markhaban Siswanto Maulana Dwi Hariska Mei Indrawati Michael Ardhita Miftachul Jannah Firdaus Miftachul Jannah Firdaus Miftachul Ulum Miftachul Ulum, Miftachul Miftahul Djanah Mochamad Ali Fikri Haiqal Mochamad Ali Rofiq Mochamad Ali Rofiq Mochamad Piono Mulyo Mochammad Heru Widodo Mochammad Nur Masrukhan Mohammad Hasib Al Isbilly Mualifi Usman Mudofar Baehaqi Muh Alfian Affandi Muh Alfian Affandi Muhamad Afif Dwi Wijaya Muhammad Ade Yusuf Alghifrani Muhammad Agil Haikal Muhammad Amirul Wahid Muhammad Aziz Muslim Muhammad Aziz Muslim Muhammad Ibrahim Muhammad Nur Hidayat Muhammad Ruswandi Djalal Muhammah Agil Haikal Muhlasin Muhlasin Muhlasin Muhlasin Muhlasin Muhlasin Muhlasin Muhlasin Muhlasin Muhlasin, Nasrul Fatkhur Nasrul Fatkhur Nieke Rudyanty Winanda Novi Nur S Nur Fadhilah, Firda Nur Salam Nurrohmah, Hidayatul Parwanti, Asnun Putri Bahiyyah Ramadhan, Dannel Rio Firmansyah Rio Firmansyah, Rio Rizqi Nafiardli Rizqi Nafiardli Rukhslin Rukmi Budirahaju Rukmi Burdirahaju Rukslin Rukslin Rukslin Rukslin Rukslin Rukslin Rukslin Rukslin Rusklin Ruslan Hidayat Ruslan Hidayat Ruslan Hidayat Ruslan Hidayat Saiful Arfaah Saiful Arfaah Sayekti Suindyah D Septa Dwi Candra Septa Dwi Candra Setiawan Setiawan Setiawan Shofwatal Qolbiyyah Siswanto, Agus Siswanto, Makhaban Soedibyo Soedibyo Sunarti Sunarti Sunarti Sunarto Sunarto Syamsiyah Yuli Dwi Andari Titis Amujiati Tri Mukti Lestari Triana Triana Triana Tubagus Fahmi Ulum, Miftachul Utoyo Efendi Venda Kusuma Apsari Wardatul Mufidah Wida Khaidir, Delief Wiky Krisdianto Wiky Krisdianto Yanuangga Galahartlambang Yanuar Mahfudz Safarudin Yanuar Mahfudz Safarudin Yoga Arie Pambayun Yoga Arie Pambayun Yurilla Endah Muliatie, Yurilla Endah