Claim Missing Document
Check
Articles

Found 3 Documents
Search

Hydrogen Supply Chain Network Optimization for Supporting Urban Hydrogen Vehicle Infrastructure Development Anasrul, Rahmad Fajri; Sopha, Bertha Maya
TIERS Information Technology Journal Vol. 6 No. 1 (2025)
Publisher : Universitas Pendidikan Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38043/tiers.v6i1.6453

Abstract

This study addressed the rising concerns regarding greenhouse gas emissions and the depletion of fossil fuel resources by exploring hydrogen as a clean energy alternative. The Indonesian government established a national roadmap that prioritized the transportation sector as a starting point for hydrogen deployment. The objective of this research was to design and optimize a hydrogen supply chain network in Jakarta, a densely populated urban area considered strategic for early adoption. The study applied a two-stage approach. First, potential locations for Hydrogen Refueling Stations (HRS) were pre-selected based on spatial and demographic scoring using a modified gravity model. Then the second, the optimal placement of HRS and hydrogen suppliers was determined through a Mixed-Integer Linear Programming (MILP) method. The entire modeling and optimization process was implemented in Python, with MILP solved using the Gurobi optimizer. A total of 216 existing gas stations were assessed and grouped into five priority levels. The optimization was conducted for three planning periods: 2026-2030, 2031-2035, and 2036-2040. The results showed that integrating new HRS into existing infrastructure reduced land use and investment costs. Sensitivity analysis indicated that daily HRS capacity, hydrogen demand, and capital cost were the most influential factors. The study concluded that this integrated approach provides an efficient, flexible, and sustainable foundation for future hydrogen infrastructure development in urban regions.
Improvement of Work Environment Governance Based on 6S (Sort, Set in Order, Shine, Standardization, Sustain, and Safety) Method Anasrul, Rahmad Fajri
Klabat Journal of Management Vol. 6 No. 2 (2025): Klabat Journal of Management
Publisher : Faculty of Economics and Business, Universitas Klabat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60090/kjm.v6i2.1342.124-134

Abstract

PT. XYZ is a company engaged in providing telecommunications services, where one of the tasks of its employees is maintenance. In the office area where they work, there are unidentified problems that make the employees uncomfortable. This research aims to determine the 6S assessment form score and the causes of the lowest score in certain variables, as well as to provide recommendations to improve the work area. This study uses the 6S method (sort, set in order, shine, standardization, sustain, and safety) for improving the work area. The results of this study show that the 6S score for the work area is 2.437, which is classified as below the minimum acceptable level, indicating the need for improvement. A fishbone diagram is used to investigate the cause and effect, and the 6S Identification Form is used to identify areas or facilities that can be proposed for improvement. The recommendations given to improve the work area include creating clear and firm SOPs (Standard Operating Procedures), adding various shelves, replacing the existing trash bins with waste containers, and providing 6S training facilities to help employees better understand and raise awareness of the importance of implementing 6S as a work culture. These findings have practical implications for improving employee well-being and operational efficiency through systematic workplace organization, particularly for maintenance teams in the telecommunications sector.
Feasibility Analysis of Industrial Waste Reduction Investment: Potential of Fruit Basket and Mat Products: Analisis Kelayakan Investasi Pengurangan Limbah Industri: Potensi Produk Keranjang Buah dan Keset Anasrul, Rahmad Fajri; Haryo, Afrido; Tristiadi, Aloysius Kalis; Swilugar, Ayu; Bagaskara, Caesarius Haryo; Vyanti, Jessica
Klabat Journal of Management Vol. 7 No. 1 (2026): Klabat Journal of Management (in progress)
Publisher : Faculty of Economics and Business, Universitas Klabat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60090/kjm.v7i1.1343.115-126

Abstract

Unprocessed waste has become a major issue in the world today. In 2021, Indonesia's environmental statistics recorded that approximately 24.5% of the total waste generated was not properly managed. One of the subjects of this issue is palm oil and textiles. Palm oil is a commodity that has experienced rapid growth, with a growth rate of 22.72% from 2017 to 2018. Meanwhile, textile waste is commonly found, especially in garment companies. This research aims to conduct an investment feasibility analysis from a financial perspective for industrial waste reduction, focusing on the business potential of fruit baskets made from palm oil waste and mats made from fabric scraps. The products generated from this waste can provide a sustainable solution while also generating financial profit. Therefore, a feasibility analysis was carried out for these two products. The investment feasibility analysis method is used to evaluate the potential success of these two waste-reducing products. The feasibility analysis involves calculating initial costs, revenue, operational costs, and cash flow projections over a certain period. Additionally, various risk factors and relevant assumptions are also considered in this analysis. The results of the feasibility analysis conclude that the fruit basket made from palm oil waste is more feasible than the mat made from fabric scraps.