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All Journal SCIENCE TECH: Jurnal Ilmiah Ilmu Pengetahuan dan Teknologi Tekinfo | Scientific Journal of Industrial and Information Engineering RANDANG TANA - Jurnal Pengabdian Masyarakat Jurnal Engine: Energi, Manufaktur, dan Material Jurnal Teknik Industri Terintegrasi (JUTIN) IEJST (Industrial Engineering Journal of the University of Sarjanawiyata Tamansiswa) Journal of Community Development Industrika : Jurnal Ilmiah Teknik Industri Jurnal Pengabdian kepada Masyarakat RING Mechanical Engineering
Kusmendar, Kusmendar
Teknik Industri Universitas Sarjanawiyata Tamansiswa
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PVWatts-Based Assessment of Solar Photovoltaic Energy Potential in Indonesian Urban Areas for Infrastructure Planning Optimization Angga Darmawan; Kusmendar; Dimas Langga Chandra Galuh
RING ME Vol 6 No 1 (2026): RING Mechanical Engineering
Publisher : Universitas Islam Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33474/rme.v6i1.25557

Abstract

The increasing demand for renewable energy in urban areas necessitates comprehensive location-based assessments of solar photovoltaic (PV) system performance. This study presents a simulation-based comparative analysis of solar energy production potential across three representative Indonesian cities: Serang (Banten Province), Yogyakarta (Special Region of Yogyakarta), and Surabaya (East Java Province), representing the western, central, and eastern geographic zones of Java Island. Using the PVWatts simulation tool with standardized system parameters and historical meteorological data, monthly and annual energy yield, solar irradiance, and AC energy output were evaluated for each location. Results indicate that Surabaya recorded the highest annual solar irradiance of 5.54 kWh/m²/day and the greatest annual AC energy production of 1,501 kWh, followed by Yogyakarta (5.27 kWh/m²/day; 1,442 kWh) and Serang (5.02 kWh/m²/day; 1,360 kWh). All three cities exhibited peak performance during the dry season (June September) and minimum production during the wet season (November February). Surabaya demonstrated the most pronounced seasonal variation, with a peak irradiance of 7.18 kWh/m²/day in September and a minimum of 3.91 kWh/m²/day in December. These findings provide a data-driven framework for optimizing solar energy infrastructure planning in Indonesian urban regions and contribute to national renewable energy transition goals aligned with Sustainable Development Goal 7.
The Peningkatan Kualitas Layanan Pada Apotek Menggunakan Metode Servqual dan Service Blueprint Alfandy Alif Utama; Elly Wuryaningtyas Yunitasari; Kusmendar Kusmendar
Tekinfo: Jurnal Ilmiah Teknik Industri dan Informasi Vol 14 No 1 (2025)
Publisher : Program Studi Teknik Industri Universitas Setia Budi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31001/tekinfo.v14i1.2722

Abstract

Depok Sleman Pharmacy, which has been established since early 2000, is now facing stiff competition from many new competitors, especially franchises with modern and complete services, where service quality is a crucial competitive aspect that has a direct impact on customer satisfaction. Therefore, this study aims to convey the level of customer satisfaction at this pharmacy and formulate service improvement proposals to remain competitive and not appear to be left behind in service facilities. In achieving this goal, the study uses two main methods: the first method is Servqual, which is used to analyze customer satisfaction by measuring the gap between customer expectations and perceptions of five service dimensions, and because the measurement results indicate a negative gap (performance below expectations), it is continued with the stage of formulating improvement proposals using the second method, namely service blueprint, which functions to visualize the entire service flow, including customer interactions (frontstage) and support processes (backstage), in order to address the identified gap points. Data were collected through a physical questionnaire distributed to 100 Depok Pharmacy customers who made in-person transactions on-site between December 2024 and January 2025. The results showed that 19 of the 22 service attributes had a negative gap value, and the overall service quality calculation resulted in a score of 0.964, indicating that most services did not meet customer expectations. Based on these findings, a service blueprint was designed as a proposal for comprehensive improvements to the service flow, in order to improve service quality and strengthen the pharmacy's presence amidst increasingly fierce competition.
Evaluasi Postur Kerja pada Proses Pengamplasan Menggunakan REBA dan NBM di CV XYZ Samarinda Dedi Irawan; Muhammad Syarif; Kusmendar Kusmendar
Science Tech: Jurnal Ilmu Pengetahuan dan Teknologi Vol 12 No 2 (2026): August
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/st.vol12.no2.a23054

Abstract

This workplace case study evaluated sanding postures at CV XYZ using Rapid Entire Body Assessment (REBA) and the Nordic Body Map (NBM). The two workers included represented the operational personnel assigned to the sanding station during the observation period. Both workers performed prolonged bending and squatting postures. NBM scores identified the upper neck, back, and waist as the areas with the highest discomfort, while the initial REBA score was 8, indicating high risk. A standing posture and an anthropometry-based workbench were then developed and simulated in EasyPose. The simulated posture produced a REBA score of 3, or low risk. The recalculated workbench dimensions were 95 cm in height, 70 cm in width, and 161 cm in length. These findings indicate a potential reduction in postural risk, but they do not constitute field validation. Implementation and repeated REBA and NBM measurements are therefore required to confirm changes in discomfort, usability, and work performance.
Co-Authors Agung Priyanto Agus Ristono Alfandy Alif Utama Alvito Shultan Alfiansyah Andri Daeng Masiki Angga Darmawan Anisa Dwi Maslikhah Ardian Arief Arya Dani, Setyawan Awang Hendrianto Pratomo Dedi Irawan Dimas Langga Chandra Galuh Eka Yulia Sari Elly Wuryaningtyas Yunitasari Gilang Prasetyo, Wahyu Indah Kurniasih Muhammad Syarif Muvidah, Nada Iman Nikma Wahyu Nurdaningsih Nurul Istiqomah Paulina Retno Anjani Sugito Rahmawati Endah Witanti Refiana Eka Asita Damayanti Retno Widiastuti Ricky Novan Pradhana Rina Apriyanti Shanta Rezkita Susanti Susanti Syamsul Ma’arif Tias Ernawati, Tias Titik Rahmawati Tri Aji Purnomo Tri Yulianto V. Reza Bayu Kurniawan Yudam Alkolid Yusuf Khoirul Huda