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All Journal Jurnal Ilmiah Teknik Industri Devotion: Journal of Research and Community Service Multidiciplinary Output Research for Actual and International Issue (Morfai Journal) Journal of Accounting Research, Utility Finance and Digital Assets (JARUDA)
Noorhan Firdaus Pambudi, Noorhan Firdaus
Institut Teknologi Bandung
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RANCANGAN TEMPAT DAN GEROBAK SAMPAH UNTUK PERBAIKAN SISTEM PENGUMPULAN SAMPAH DI TAMAN HUTAN RAYA (TAHURA) IR. H. DJUANDA Nawangpalupi, Catharina Badra; Pambudi, Noorhan Firdaus
Jurnal Ilmiah Teknik Industri Vol. 14, No. 2, Desember 2015
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

Tahura Juanda (Tahura) is a forest park located between the city of Bandung, West Bandung Regency and Regency Bandung. It has a role to preserve the city environment.  Number of visitors in Tahura made the Tahura need to have a good waste management system.  Optimal waste management system can be achieved, if garbage collection and removal equipment work well, such is the place and garbage carts. Based on observation, the condition of the premises and garbage carts are less good. Therefore, it is needed to redesign the place and garbage carts through the whole process of product development. The study was conducted by identifying the needs of the janitor, Tahura management staff, and visitors. Identifications produce seven types of trash and five types garbage carts requirements, which will be the basis in developing the concept. The process of developing the concept of trash and garbage carts done using a combination tables and SCAMPER process. All concepts are selected by screening matrix concept and assessment concepts, to pick the concept of trash and garbage cart.
RANCANGAN TEMPAT DAN GEROBAK SAMPAH UNTUK PERBAIKAN SISTEM PENGUMPULAN SAMPAH DI TAMAN HUTAN RAYA (TAHURA) IR. H. DJUANDA Nawangpalupi, Catharina Badra; Pambudi, Noorhan Firdaus
Jurnal Ilmiah Teknik Industri Vol. 14, No. 2, Desember 2015
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/jiti.v14i2.1132

Abstract

Tahura Juanda (Tahura) is a forest park located between the city of Bandung, West Bandung Regency and Regency Bandung. It has a role to preserve the city environment.  Number of visitors in Tahura made the Tahura need to have a good waste management system.  Optimal waste management system can be achieved, if garbage collection and removal equipment work well, such is the place and garbage carts. Based on observation, the condition of the premises and garbage carts are less good. Therefore, it is needed to redesign the place and garbage carts through the whole process of product development. The study was conducted by identifying the needs of the janitor, Tahura management staff, and visitors. Identifications produce seven types of trash and five types garbage carts requirements, which will be the basis in developing the concept. The process of developing the concept of trash and garbage carts done using a combination tables and SCAMPER process. All concepts are selected by screening matrix concept and assessment concepts, to pick the concept of trash and garbage cart.
RANCANGAN TEMPAT DAN GEROBAK SAMPAH UNTUK PERBAIKAN SISTEM PENGUMPULAN SAMPAH DI TAMAN HUTAN RAYA (TAHURA) IR. H. DJUANDA Catharina Badra Nawangpalupi; Noorhan Firdaus Pambudi
Jurnal Ilmiah Teknik Industri Vol. 14, No. 2, Desember 2015
Publisher : Department of Industrial Engineering Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/jiti.v14i2.1132

Abstract

Tahura Juanda (Tahura) is a forest park located between the city of Bandung, West Bandung Regency and Regency Bandung. It has a role to preserve the city environment.  Number of visitors in Tahura made the Tahura need to have a good waste management system.  Optimal waste management system can be achieved, if garbage collection and removal equipment work well, such is the place and garbage carts. Based on observation, the condition of the premises and garbage carts are less good. Therefore, it is needed to redesign the place and garbage carts through the whole process of product development. The study was conducted by identifying the needs of the janitor, Tahura management staff, and visitors. Identifications produce seven types of trash and five types garbage carts requirements, which will be the basis in developing the concept. The process of developing the concept of trash and garbage carts done using a combination tables and SCAMPER process. All concepts are selected by screening matrix concept and assessment concepts, to pick the concept of trash and garbage cart.
STRATEGIES FOR IMPLEMENTING LOCAL CONTENT REGULATIONS IN FIBER OPTIC CABLE MANUFACTURE: A CASE STUDY OF PT ZTT INDONESIA Zhao Haiwei; Noorhan Firdaus Pambudi
Multidiciplinary Output Research For Actual and International Issue (MORFAI) Vol. 6 No. 4 (2026): Multidiciplinary Output Research For Actual and International Issue
Publisher : RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.19521212

Abstract

Local Content Requirement (LCR) policies are widely implemented to strengthen domestic industries, enhance value added, and support national economic development. In Indonesia, the mandatory minimum 40% LCR significantly affects strategic sectors, including the fiber optic cable industry, which plays a crucial role in national digital infrastructure. However, structural challenges persist, particularly the dependence on imported raw materials and the limited competitiveness of domestic suppliers. This study aims to analyze the benefits of LCR implementation, identify key challenges faced by PT ZTT Indonesia, and formulate strategic solutions to improve LCR compliance. This research adopts a qualitative case study approach using primary and secondary data, including interviews, observations, and company reports, analyzed through Fishbone and PDSA frameworks. The findings indicate that LCR implementation enhances access to government procurement, strengthens competitiveness, and fosters backward industrial linkages with local suppliers. However, major constraints include limited availability and quality of domestic raw materials, higher production costs, regulatory complexity, technological limitations, and logistical challenges. These factors create operational inefficiencies and hinder optimal LCR achievement. To address these challenges, strategic improvements are proposed, including supplier capacity development, technology upgrading, process optimization, and increased investment in research and development. Strengthening collaboration between industry, government, and suppliers is also essential to improve ecosystem readiness. In conclusion, effective LCR implementation requires an integrated and adaptive approach that aligns policy frameworks with industrial capabilities. Future policies should emphasize flexibility, innovation, and sustainable industrial development to ensure long-term competitiveness and reduced dependency on imports
Integrating Lean Six Sigma and Soil Quality Preservation in Topsoil Removal Operations: A Case Study of Indonesian Coal Mining Menahim Fajar Kurnia Rapa; Noorhan Firdaus Pambudi
Devotion : Journal of Research and Community Service Vol. 7 No. 8 (2026): Devotion: Journal of Community Research
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/devotion.v7i8.25755

Abstract

Topsoil removal is a critical activity in surface coal mining operations because it directly affects operational productivity and the success of post-mining land rehabilitation. This study aimed to identify operational waste within the topsoil removal process, develop improvement strategies to enhance productivity, and evaluate the role of soil quality preservation in supporting sustainable mining practices. The study employed a Lean Six Sigma framework using the DMAIC (Define, Measure, Analyze, Improve, Control) methodology. Value Stream Mapping (VSM), Cycle Time Analysis, Pareto Analysis, and Failure Mode and Effects Analysis (FMEA) were applied to identify process inefficiencies, prioritize critical operational issues, and formulate improvement strategies. The findings revealed that approximately 43.37% of the total operational cycle time consisted of non-value-added activities, with the dominant sources of waste occurring in loading queue time, traffic conflicts at intersections shared with overburden hauling operations, haul road-related travel delays, blasting interruptions, and operator-related delays. The FMEA results further identified loading queue time (RPN = 324), traffic conflicts (RPN = 320), and haul road delays (RPN = 280) as the most critical operational risks. The proposed improvement initiatives were estimated to reduce cycle time by approximately 20% and increase hauling productivity by around 24%. Beyond productivity improvement, this study highlighted the importance of preserving topsoil quality through controlled handling practices and the application of lower-impact equipment to minimize soil compaction and maintain humus integrity. The findings demonstrated that operational efficiency and soil quality preservation could be achieved simultaneously through a systematic Lean Six Sigma approach, contributing to sustainable mining operations and successful post-mining land reclamation.
ADAPTIVE CRUDE OIL INVENTORY OPTIMIZATION UNDER GEOPOLITICAL UNCERTAINTY: A MONTE CARLO SIMULATION AND FMEA-BASED APPROACH AT AN INDONESIAN STATE-OWNED REFINERY Purnama Wulansari Neldy; Noorhan Firdaus Pambudi
Journal of Accounting Research, Utility Finance and Digital Assets Vol. 5 No. 2 (2026): October (ON-PROGRESS)
Publisher : PT. Radja Intercontinental Publishing

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Abstract

Indonesia's growing reliance on imported crude oil has heightened its exposure to geopolitical disruptions, yet the static inventory policies at its most import-dependent refineries: RU IV Cilacap and RU V Balikpapan were designed for a stable supply environment. This study asks not merely whether lead-time variance matters, which is well established, but how much unrecognised geopolitical exposure is embedded in a specific national refining portfolio and what layered policy can absorb it. Using an integrated PESTEL, Causal Loop Diagram, Pareto, Monte Carlo and FMEA framework within a DMAIC design, calibrated on 2021–2023 cargo-level data, the study produces three context specific findings. First, Pareto analysis reveals an acute structural vulnerability invisible to the current model: Nigeria supplies 98 percent of medium crude at both refineries simultaneously, so a single Nigerian force-majeure event would sever near-total medium-crude supply nationally. Second, the calibrated stochastic model shows the static M+3 policy underestimates required Safety Stock by 39 to 134 percent across six crude categories, widening beyond 1,400 percent for the most exposed category under disruption, and the FMEA ranks vessel shortage and Red Sea rerouting as the two highest risks. Third, a stockout-avoidance test demonstrates that no single Safety Stock level can absorb extreme disruption, motivating the study's central contribution: a three-layer buffer framework combining adaptive Safety Stock, callable floating storage, and origin diversification, each activated at a distinct cost–risk trigger. The study offers state-owned refineries a transferable, empirically grounded method for converting geopolitical signals into operational inventory policy.
Co-Authors Catharina Badra Nawangpalupi Menahim Fajar Kurnia Rapa Purnama Wulansari Neldy Zhao Haiwei