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All Journal PENDIPA Journal of Science Education Jurnal Aplikasi Teknik Sipil Publikasi Riset Orientasi Teknik Sipil (Proteksi) International Journal of Hydrological and Environmental for Sustainability
Muhammad Rizki Arif
Departement of Railway Engineering, Institut Teknologi Sumatera
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Environmental Science Mathematics Transportation

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Faktor-Faktor yang Mempengaruhi Pemilihan Layanan Kapal Penyeberangan Angkutan Penumpang Kapal Eksekutif dan Kapal Reguler di Pelabuhan Penyeberangan Bakauheni Lampung Arif, Muhammad Rizki; Sulistyorini, Rahayu; Persada, Citra
Jurnal Aplikasi Teknik Sipil Vol 22, No 4 (2024)
Publisher : Departemen Teknik Infrastruktur Sipil Institut Teknologi Sepuluh Nopember Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j2579-891X.v22i4.17596

Abstract

Terdapat kenaikan harga di beberapa transportasi seperti pesawat dan bus. Hal ini menyebabkan penumpang lebih memilih moda transportasi yang jauh lebih murah dan terjangkau. Layanan kapal penyeberangan kapal eksekutif dan kapal reguler merupakan salah satu transportasi yang dapat digunakan untuk menuju Jakarta dan sebaliknya. Sehingga tujuan dari penelitian ini adalah mengidentifikasi faktor-faktor yang mempengaruhi permintaan penumpang dalam pemilihan layanan kapal penyeberangan rute Bakauheni-Merak serta menganalisis peluang atau probabilitas penumpang yang menggunakan kapal eksekutif dan kapal reguler penyeberangan rute Bakauheni-Merak. Metode penelitian yang digunakan adalah analisis regresi linear berganda dan analisis probabilitas dengan metode pengumpulan data menggunakan kuisioner. Hasil penelitian ini faktor yang paling berpengaruh dalam pemilihan layanan penyeberangan pada kapal eksekutif yaitu faktor waktu perjalanan sebesar 56% dan pada kapal reguler yaitu faktor tarif sebesar 79%. Didapatkan persamaan regresi linear berganda Y = 0,187 + 0,178 X1 + 0,252 X2 + 0,177 X3 + 0,212 X4 + 0,128 X5 untuk kapal eksekutif dan Y = 0,114 + 0,120 X1 + 0,244 X2 + 0,243 X3 + 0,256 X4 + 0,099 X5 untuk kapal reguler dengan nilai koefisien determinasi (R2) kapal eksekutif sebesar 0,876 dan kapal reguler sebesar 0,855. Dengan nilai utilitas kapal eksekutif sebesar 3,8309 dan kapal reguler sebesar 3,3773. Berdasarkan perhitungan dari persamaan di atas didapat nilai persentase probabilitas untuk pemilihan layanan kapal penyeberangan kapal eksekutif sebesar 61,15% dan kapal reguler sebesar 38,85%.
Perancangan Filter Pasif Pada Gardu Traksi di Stasiun Citayam Guna Mengurangi Efek Distorsi Harmonisa Putri Jori, Rahmatika Dwi; Sari, Nurwanda; Desliana, Lulu Syahira; Maulidina, Siti; Mardhotillah, Nur Anisa; Arif, Muhammad Rizki; Aini, Nur Syahidah
PendIPA Journal of Science Education Vol 9 No 3 (2025): October
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.9.3.742-751

Abstract

Electric Rail Trains (KRL) have become the most frequently used transportation mode for daily activities in the community. One of the existing problems within the operation system of Electric Rail Trains (KRL) lies in the current rectification process. During this rectification process, an effect occurs that can cause disturbances in the KRL's electrical system. This resulting effect is the harmonic effect. This study aims to address the problem of power quality degradation in the Electric Rail Train (KRL) at the Citayam Station Traction Substation, which is caused by this harmonic effect. The harmonic effect arises from the process of rectifying alternating current (AC) into direct current (DC) using a silicon rectifier, which can lead to voltage drop, speed reduction, or even the operational stoppage of the KRL.The research method used is quantitative descriptive. The study did not conduct direct measurements but instead used averaged assumption data from three related journals as primary data. The data analyzed were the values of Total Harmonic Distortion (THD) for both current and voltage, particularly focusing on the 5th, 7th, and 11th harmonic orders, which were identified as the highest contributors to the harmonic distortion. To mitigate the harmonics, this study designed a single-tuned passive filter using the ETAP (Electric Transient Analysis Program) software. The design aims to suppress the harmonic distortion, thereby improving the electrical power quality, maintaining the reliability of the traction substation, and optimizing KRL operations. The single-tuned passive filter designed in this research was capable of suppressing harmonics by up to 0.009%.
Hydrological Assessment and Irrigation Water Optimization Based on Cropping Patterns in the Way Bungur Irrigation Area, Indonesia Restika Putri; Frida Yassar Maula; Muhammad Rizki Arif; Ikhsan Maulidi; Vina Apriliani
International Journal of Hydrological and Environmental for Sustainability Vol. 4 No. 3 (2025): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v4i3.926

Abstract

Efficient water management is essential for sustaining agricultural productivity, particularly in regions supported by technical irrigation systems such as the Way Bungur Irrigation Area in Pringsewu Regency, Indonesia. Although water availability in this region is generally adequate, its utilization remains inefficient due to cropping schedules that are not aligned with seasonal hydrological conditions, especially during the dry season. This study evaluates irrigation water requirements based on crop types and the official Cropping Pattern Plan (SK RTT), and compares them with water availability estimated using the F.J. Mock hydrological model. Input data include rainfall records, climatological parameters, river discharge, and field measurements. Crop water requirements were calculated using the FAO Penman–Monteith method, while water availability was assessed through dependable flow analysis. Results indicate that water availability in the Way Bungur watershed generally exceeds irrigation demand across three cropping seasons. However, temporal mismatches between planting schedules and water surplus or deficit periods lead to suboptimal water use. These findings highlight the importance of integrating annual water balance analysis into cropping pattern planning to enhance allocation efficiency, reduce risk, and promote sustainable agricultural development.
DOUBLE TRACK RAILWAY PLANNING ONE THE TRACK KM 309+260 – KM 302+600 SECTION DIVRE IV TANJUNG KARANG: PERENCANAAN JALAN REL DOUBLE TRACK PADA LINTASAN KM 309+260 – KM 302+600 DIVRE IV TANJUNG KARANG febriyadi febriyadi; Arif Setyaji; Exaudi; Nur Anisa Mardhotila; Muhammad Riski Arif; Nurwanda Sari; Siti Maulidina; Hadyan Arifin Bustam
PUBLIKASI RISET ORIENTASI TEKNIK SIPIL (PROTEKSI) Vol 8 No 1 (2026): Vol 8 No 1 Tahun 2026
Publisher : Universitas Negeri Surabaya

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

Abstract

Coal distribution at PT Bukit Asam uses railway transportation. This is considered quite efficient given the capability of trains to carry both passengers and goods in large quantities in a single trip, making it very efficient for mass transportation and logistics distribution over medium to long distances. However, in terms of advantages, trains on a single track face limitations in distance, load, and traffic capacity. Planning a Double Track route offers advantages in addressing issues related to load and traffic capacity. This study aims to find solutions regarding the traffic load on a track by adding a railway line (Double Track) without changing the existing track. The railway route planning is designed based on factors of comfort, safety, security, economy, and environment. The Vertical Alignment planning includes 2 curves with a planned radius of 7000 m and a gradient value of 6.6‰. The material requirements for the planned railway structure consist of R60 Rails (497 units), Double Elastic Fasteners (41,400 units), Concrete Sleepers (10,350 units), Ballast Volume (7,173 ), Ballast Volume (15,897 ), Cut Volume (567,743 ), and Fill Volume (205,269 )    
Co-Authors Arif Setyaji Desliana, Lulu Syahira Exaudi Febriyadi Frida Yassar Maula Hadyan Arifin Bustam Ikhsan Maulidi Mardhotillah, Nur Anisa Nur Anisa Mardhotila nur syahidah aini Nurwanda Sari Persada, Citra Putri Jori, Rahmatika Dwi Rahayu Sulistyorini Restika Putri Siti, Maulidina Vina Apriliani