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All Journal International Journal of Environment, Engineering, and Education Journal of Civil Engineering and Vocational Education Jurnal Online Skripsi Manajemen Rekayasa Konstruksi (JOS-MRK)
SUBKHAN, MUHAMAD FAJAR
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Electrical & Electronics Engineering Engineering Environmental Science Transportation

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PERENCANAAN GEOMETRIK JALUR KERETA API LOGISTIK DI KAWASAN INDUSTRI KABUPATEN GRESIK FAWWAZ, MOHAMMAD FAISHOL; RATNANINGSIH, DWI; SUBKHAN, MUHAMAD FAJAR
Jurnal Online Skripsi Manajemen Rekayasa Konstruksi (JOS-MRK) Vol. 4 No. 2 (2023): JUNI 2023
Publisher : Jurusan Teknik Sipil Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Kawasan industri di Kabupaten Gresik semakin berkembang pesat. Kebutuhan akan kendaraan angkutan barang juga semakin meningkat dan menimbulkan masalah-masalah rumit yang berkepanjangan karena masih sangat bergantung terhadap angkutan jalan. Oleh karena itu, perlu direncanakan kereta api logistik sebagai alternatif moda angkutan barang yang memiliki banyak keuntungan. Tujuan dari penelitian ini adalah untuk merencanakan jalan rel kereta api dalam hal geometrik serta RAB sebagai moda transportasi logistik di kawasan industri Gresik. Data primer diperoleh dari survei secara langsung. Sedangkan data sekunder yang digunakan berupa data jalur eksisting, peta topografi, spesifikasi kereta dan AHSP. Metode penelitian mengacu pada Peraturan Menteri Perhubungan No. 60 Tahun 2012 dan No. 78 Tahun 2014. Perencanaan menghasilkan jalan rel penggabungan eksisting dan baru dengan panjang total 19.159,837m serta memiliki 18 titik alinyemen horizontal SCS dan 55 titik alinyemen vertikal. Rencana anggaran biaya sebesar Rp. 155.916.827.800,00.
Assessing the Correlation between Camera Angle and the Accuracy of Elevation Measurements Derived from UAV-Photogrammetry: - Susilo, Helik; Novianto, Dandung; Rahardianto, Trias; Cupasindi, Dyah Ayu Rahmawati; Subkhan, Muhamad Fajar; Supiyono; Asema, Fuji
CIVED Vol. 12 No. 1 (2025): March 2025
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/cived.v12i1.750

Abstract

Elevation measurement is essential for various applications, including construction engineering, monitoring land subsidence, maintaining infrastructure, etc. A conventional method for elevation measurement involves terrestrial surveying using a Total Station instrument. However, this method can be time-consuming and requires a considerable number of personnel. Unmanned Aerial Vehicle (UAV) photogrammetry method offers a more efficient solution for determining elevation. This method utilizes UAVs equipped with camera sensors to capture aerial photos. In this research, aerial photos were taken using three different camera angle configurations: nadir (90°), oblique (65°), and oblique (45°). The elevation points derived from the UAV photogrammetry data were compared with the elevation measured by the Total Station. The analysis showed that the nadir (90°) camera angle configuration had the lowest Root Mean Square Error (RMSE) at 0.0471 meters, followed by the oblique (65°) configuration with RMSE of 0.0508 meters, and the obliqu (45°) configuration with RMSE of 0.1399 meters. According to the t-test, the elevations derived using the UAV photogrammetry method were not significantly different from the elevations measured with the Total Station.
Perceived Security and Trust as Mechanisms of P2P Adoption Technology: Evidence from Pre-Adopters Using PLS-SEM Approach Wijaya, Indra Dharma; Salam, Rudi; Ghozi, Saiful; Mubarok, Faiz Ushbah; Subkhan, Muhamad Fajar
International Journal of Environment, Engineering and Education Vol. 8 No. 1 (2026)
Publisher : Three E Science Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55151/ijeedu.v8i1.373

Abstract

Peer-to-peer (P2P) lending can expand working-capital access for micro-entrepreneurs, yet borrowing via digital platforms heightens perceived vulnerability due to sensitive data disclosure and binding repayment obligations. This study examines how perceived security and trust shape adoption intention in a high-stakes fintech context by extending the Technology Acceptance Model (TAM) and testing whether security and trust transmit the effect of perceived usefulness to intention. Using an explanatory cross-sectional design, we collected offline-administered survey data from 204 Indonesian micro-entrepreneurs who had not previously adopted P2P lending to capture pre-adopter perceptions better and reduce digital-selection bias. The model was estimated using PLS-SEM 3. The results indicate that all hypothesized relationships are positive and statistically significant. Perceived usefulness significantly enhances perceived security (β = 0.562) and trust (β = 0.259), while perceived security exerts a strong positive effect on trust (β = 0.517). Intention to use P2P lending is directly influenced by perceived security (β = 0.337), trust (β = 0.213), and perceived usefulness (β = 0.208). Mediation analysis confirms that perceived security (β = 0.189) and trust (β = 0.055) partially mediate the effect of perceived usefulness on intention to use. The model explains 42.4% of the variance in intention to use (R-squared = 0.424) and demonstrates adequate predictive relevance (Q-squared = 0.263). Overall, perceived security emerges as the most influential determinant of adoption intention, underscoring the importance of security-by-design features, transparent governance, and robust consumer-protection frameworks in fostering trust and accelerating P2P lending adoption among micro-entrepreneurs.
Engineering-Oriented Transit QoS and Perceived Value: Predicting Passenger Satisfaction and Behavioral Intentions in Urban Public Transport Subkhan, Muhamad Fajar; Astuti, Endang Siti; Kusumawati, Andriani; Sunarti, Sunarti
International Journal of Environment, Engineering and Education Vol. 8 No. 1 (2026)
Publisher : Three E Science Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55151/ijeedu.v8i1.427

Abstract

The integration of technology into education has garnered significant interest, particularly for its potential to support environmental sustainability. Urban bus and bus rapid transit (BRT) systems must deliver passenger-centered service quality that is both measurable for operators and meaningful to users. However, service-quality research often relies on generic perceptual scales that are difficult to translate into actionable operational interventions. This study advances an engineering-oriented Stimulus–Organism–Response (S–O–R) framework by conceptualizing Transit Engineering Quality of Service (TE-QoS) as an actionable stimulus and examining its relationships with perceived value, satisfaction, and behavioral intention in the context of urban bus services in Indonesia. Data were collected through an offline intercept survey of Trans Jatim passengers in the Surabaya metropolitan area between June and July 2024, yielding 300 valid responses for analysis. Using CB-SEM (AMOS), the measurement model demonstrated satisfactory reliability and validity. The structural results indicate that perceived value strongly predicts satisfaction (β = 0.698, p < 0.001), whereas TE-QoS exerts a positive, though comparatively modest, direct effect on satisfaction (β = 0.122, p = 0.017). Satisfaction, in turn, strongly predicts behavioral intention (β = 0.700, p < 0.001). The Model explains 50.2% of the variance in satisfaction and 48.9% of the variance in behavioral intention. These findings suggest that operational improvements in reliability, regularity, travel-time efficiency, access, comfort, information, and safety are more likely to strengthen loyalty-related intentions when passengers perceive them as clear gains in value. Future research should integrate objective operational data and formally examine indirect mediation pathways.
Co-Authors 2087-2090, Fuji Asema Andriani Kusumawati Cupasindi, Dyah Ayu Rahmawati Dandung Novianto Dwi Ratnaningsih, Dwi Endang Siti Astuti FAWWAZ, MOHAMMAD FAISHOL Helik Susilo Indra Dharma Wijaya, Indra Dharma Rahardianto, Trias Rudi Salam Saiful Ghozi, Saiful Sunarti Supiyono .