1,720,976 research outputs found
Penambahan Gilsonite Resin Pada Aspal Prima 55 untuk Meningkatkan Kualitas Perkerasan Hot Mix
No full textPemindahan Supply Point Penjualan Hsfo Menggunakan Metode F-AHP pada PT Pertamina Patra Niaga Jawa Timur
Full text linkThis study aims to determine the best location for relocating PT Pertamina Patra Niaga\u27s High Sulfur Fuel Oil (HSFO) Supply Point in East Java to improve distribution efficiency and reduce logistics costs. The research method used is the Fuzzy Analytical Hierarchy Process (F-AHP) approach, which combines quantitative and qualitative analysis through expert interviews and focus group discussions (FGDs) to assign weights to factors and subfactors influencing location selection. The results indicate that location accessibility has the highest weighting of 0.614, surpassing financial factors at 0.386. The market location subfactor is the top priority, with a weighting of 0.420, as proximity to HSFO consumption centers provides significant distribution efficiency. Based on the F-AHP analysis, TBBM Tuban was selected as the most optimal location with a score of 0.567, surpassing Camplong Madura, Malang, and Madiun. The study concludes that relocating the Supply Point to Tuban is a strategic move that can increase cost efficiency by up to 25%, accelerate distribution, and strengthen the company\u27s competitiveness and operational sustainability.
Keywords: HSFO, Location Selection, Fuzzy AHP, Accessibility, Distribution Efficienc
EVALUASI KINERJA LALU LINTAS SEKITAR GERBANG TOL SIDOARJO
Full text linkGerbang Tol Sidoarjo memiliki Akses masuk-keluar dengan tingkat kemacetan Lalu lintas cukup tinggi khususnya pada jam puncak (peak hour) pagi, siang dan sore. Persimpangan sebidang dekat dengan akses masuk-keluar gerbang tol, sehingga membuat kondisi tidak teratur dan kurang terkendali. Permukiman, pusat perbelanjaan disekitar akses tersebut, juga menjadi penyebab. Permasalahan, Bagaimana kinerja lalu lintas eksisting disekitar gerbang TOL Sidoarjo saat ini serta 5 tahun mendatang. Diawali dengan pengumpulan data-data yaitu survey lapangan, geometric, arus lalu lintas, maupun data sekuder dari BAPPEDA dan Dinas Perhubungan Sidoarjo. Analisa pada kondisi eksisting (tahun 2017), dan untuk jangka waktu 5 tahun kedepan (tahun 2023) menggunakan metode MKJI 1977 dengan bantuan program KAJI. Hasil perhitungan kondisi eksisting pada segmen, simpang tidak bersinyal dan bundaran disekitar TOL Sidoarjo, bervariasi dan pada beberapa bagian telah mencapai LOS F. Perbaikan geometrik dan manajemen lalu lintas 5 tahun kedepan sangat diperlukan, didapatkan tingkat pelayanan menjadi lebih baik. Bundaran taman pinang puncak pagi dan sore tahun 2017-2019 adalah DS > 0,75 dengan LOS E, sedangkan puncak siang tahun 2017-2019 adalah LOS D. Untuk puncak pagi tahun 2020-2022 adalah LOS F sedangkan pada puncak siang dan sore mencapai LOS E. Tingkat pelayanan untuk bundaran TOL Sidoarjo pada puncak pagi, siang, sore pada tahun 2017-2019 adalah LOS C .Sedangkan Untuk puncak pagi tahun 2020 sudah mencapai LOS D dan untuk puncak siang dan sore tahun 2022 mencapai LOS D. Tingkat pelayanan untuk simpang tak bersinyal Kahuripan Nirwana pada pagi dan siang adalah LOS E, sedangkan puncak sore sudah mencapai F, dan untuk 5 tahun berikutnya LOS F. Tingkat pelayanan untuk segmen jalan raya jati dari tahun 2017-2022 mencapai LOS F
Generalized Additive Models for Estimating Motorcycle Collisions on Collector Roads
No full textAbstractIn the recent years, the frequency of motorcycle collision in Indonesia, especially in Surabaya, is constantly increasing. This article will explain the use of the Generalized Additive Models (GAMs) to estimate motorcycle collision on collector roads in Surabaya. This study uses GAMs with Gaussian distribution and logarithmic link function, as well as application of software R in data processing. The case study takes place on urban roads in Surabaya, Indonesia. In this study, 69 roads of 120 collector roads in Surabaya are selected. The final model of this study indicates the relationship between the frequency of motorcycle collision on collector roads with explanatory variables which consists of traffic volume, road length, accessibility, road width, number of lanes, and traffic speed. Increasing values of explanatory variables in the prediction model lead to increased risk of accidents. These findings are expected to be considered in programs planned to reduce motorcycle collision on collector roads in Surabaya and other cities
Evaluation of Effectiveness and Benefits of iRAP and Bina Marga Methods for Road Safety Assessment on the Karanglo-Bts. Kota Batu (Karang Ploso) Segment
Full text linkAccording to Road Safety (2002), traffic accidents result from vehicles, humans, road environments, and their interactions. Addressing these issues is crucial for improving road safety, particularly for operational roads and those under maintenance, to prevent recurring accidents in the same locations. This study examines the effectiveness and benefits of two road safety assessment methods: the iRAP ranking analysis method and the Bina Marga ranking analysis method. The Karanglo–Batu City Border (Karang Ploso) road segment, spanning 7.99 km, was selected as the study area. Both methods analyze five key accident types: roadway departure, head-on collisions due to loss of control or overtaking, intersection accidents, and accidents at property access points. Factors influencing these accidents include probability, severity, operational speed, external traffic, and median traversability, with star ratings assigned based on the Star Rating Score (SRS). The iRAP method, utilizing the iRAP Demonstrator application, yielded an SRS score of 8.92 (3 stars), while the Bina Marga method, using manual calculations as per the Road Environment and Safety Guidelines Number 06/P/BM/2024, produced a score of 7.13 (3 stars). After implementing rehabilitation recommendations, both methods improved the score to 2.78 (4 stars). Effectiveness values were 35.68 for iRAP and 31.69 for Bina Marga, both categorized as effective. Post-improvement, the effectiveness value was 12.36, categorized as very effective. The iRAP method demonstrated higher direct benefits, particularly in data input, sampling, and implementation, making it more suitable for precise safety assessments
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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