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All Journal Jurnal Manajemen Teknologi Journal of Business and Management The Indonesian Journal of Business Administration Journal of Engineering and Management in Industrial System Journal of Regional and City Planning Jurnal Ekonomi & Studi Pembangunan EKOMBIS REVIEW: Jurnal Ilmiah Ekonomi dan Bisnis The Asian Journal of Technology Management (AJTM) International Research Journal of Business Studies (E-Journal) International Journal of Supply Chain Management Jurnal Darma Agung International Journal of Economic, Business, Accounting, Agriculture Management and Sharia Administration (IJEBAS) Automotive Experiences Indonesian Journal of Multidisciplinary Science The South East Asian Journal of Management Journal Research of Social Science, Economics, and Management Cerdika: Jurnal Ilmiah Indonesia Journal of Business, Social and Technology International Journal of Entrepreneurship and Sustainability Studies Journal Integration of Management Studies International Research Journal of Business Studies Jurnal Bisnis dan Pemasaran Digital International Journal of Accounting and Management Information Systems
Gatot Yudoko
Sekolah Bisnis dan Manajemen ITB
Aerospace Engineering Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Public Health Social Sciences Transportation Other

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Performance Optimization of Coal Hauling Operations Through DMAIC Framework: A Case Study at PT Berau Coal Paseru, Alvito Tirano; Yudoko, Gatot; Sanusi, Dudu Anwar; Ardiansyah, Pandu Zea; Limowa, Agung
Journal Integration of Management Studies Vol. 3 No. 2 (2025): (Special Issue)
Publisher : Integrasi Sains Media

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58229/jims.v3i2.360

Abstract

The coal mining industry faces increasing demands to enhance operational efficiency and reduce costs in order to remain competitive amid dynamic market conditions. This research aims to optimize the coal hauling process at PT Berau Coal, one of Indonesia's major coal producers, by applying the Lean Six Sigma methodology using the DMAIC (Define, Measure, Analyze, Improve, Control) framework. A combination of quantitative and qualitative data collection methods, including process mapping, root cause analysis, and productivity measurement, is employed to systematically identify inefficiencies and bottlenecks within the coal hauling operation in Binungan Mine Operation Block 8. Research shows that significant productivity losses are attributed to prolonged waiting times, process delays, and insufficient standard operating procedures (SOPs). To address these issues, a set of improvement strategies has been formulated, emphasizing the renewal and enforcement of Standard Operating Procedures (SOPs), the implementation of a Fleet Management System (FMS) for real-time monitoring and decision-making, and the application of simulation modeling using AnyLogic software to assess the effectiveness of the suggested changes. Importantly, simulation results demonstrate that the average number of cycles per productive hour can increase from 5–6 to 9 cycles per hour through optimized operations. The findings demonstrate that implementing Lean Six Sigma within the DMAIC framework can substantially enhance coal hauling productivity, reduce operational cycle times, and improve overall cost efficiency. This research provides a framework for ongoing improvement in mining logistics and offers actionable insights for practitioners seeking sustainable operational excellence in a competitive industry.
A Practical Recovery Strategy for Delayed Construction Project: Insights from a Geothermal Cooling Tower Case Kusuma Anuraga, Hilarius Yuda; Yudoko, Gatot
Journal Research of Social Science, Economics, and Management Vol. 4 No. 12 (2025): Journal Research of Social Science, Economics, and Management
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jrssem.v4i12.902

Abstract

Project delays in construction often lead to significant financial consequences, particularly in terms of penalties specified in the project contract. This study addresses the cost-efficiency consideration behind the decision to implement project crashing through overtime, as opposed to accepting the penalty due to project delay. The research uses a case study of a geothermal power plant renovation project in Indonesia, which faced a ten-week delay caused by external factors. The study compares the penalty potential with the total cost of project crashing calculated. The results reveal that accelerating activities on the critical path only costs 17.02% of the potential penalty if no corrective actions are taken. This analysis emphasizes the importance of financial trade-offs in project decision-making and highlights that project crashing, when planned and executed properly, is a rational and cost-efficient strategy to recover from delays, provided it does not compromise project quality and scope. The study contributes to understanding the financial implications of project acceleration and offers insights for managers considering delay recovery strategies.
The Design Of Project Risk Management To Mitigate Project Delay In the Onshore Construction Industry (Case: Shore Protection Project)CTION INDUSTRY (CASE: SHORE PROTECTION PROJECT) Muhammad, Firdaus Yusri; Yudoko, Gatot; Hanafi, Muhammad
Journal of Business Social and Technology Vol. 6 No. 2 (2025): Journal of Business, Social and Technology
Publisher : Politeknik Siber Cerdika Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59261/jbt.v6i2.518

Abstract

This study aims to design a project risk management system to mitigate delays in the land-based construction industry, using a case study of the PT Sabar Sejahtera coastal protection project. The project experienced a three-month delay, resulting in financial losses and lost business opportunities due to a lump-sum contract. The methods employed included both qualitative and quantitative approaches, with primary data collected through focus group discussions with project stakeholders and secondary data sourced from internal company documents. Root cause analysis used a Current Reality Tree (CRT) to identify the causes of delays, while solutions were visualized through a Future Reality Tree (FRT). Risk evaluation was conducted using a Failure Mode and Effects Analysis (FMEA) to calculate the Risk Priority Number (RPN), as well as the application of a risk management framework based on the PMBOK 6th Edition. The results showed that the leading causes of delays were systematic errors at the tendering and planning stages, as well as the unavailability of a risk mitigation plan. These two factors caused a domino effect on procurement, equipment, schedules, and the confidence of the main contractor. Proposed solutions included improving the tendering and planning system by involving various departments early and implementing the complete PMBOK risk management cycle. The implications of this study highlight the importance of a structured risk management system in preventing similar project delays in the future. This study also provides strategic guidance for improving the efficiency and control of construction projects in complex work environments.
COST REDUCTION STRATEGY IN PAPAYA PRODUCTION: IMPLEMENTING DMAIC AND LEAN FARM Parcelino Prabowo, Rommy; Yudoko, Gatot
International Journal of Economic, Business, Accounting, Agriculture Management and Sharia Administration (IJEBAS) Vol. 5 No. 2 (2025): April
Publisher : CV. Radja Publika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/ijebas.v5i2.2983

Abstract

Great Giant Pineapple (GGP) faced significant losses in papaya production in 2022, with actual costs reaching IDR 25,000/Kg against a budget of IDR 5,900/Kg, resulting in a IDR 4.2 billion loss. Plant care and maintenance, particularly fertilization and manual pesticide application, were the primary cost drivers. Utilizing the DMAIC methodology and SAP data, the research focused on cost reduction. Fertilization costs were dominated by materials, which were deemed unchangeable due to research-backed recommendations. Therefore, the study targeted labor efficiency in manual pesticide application. Cost-benefit analysis identified "Improvement Scenario 1" (layout: double-row, 1,8 meter, 3,25 meter operational road) as the most effective/best alternative for cost reduction. This scenario was selected for implementation to achieve cost efficiency in pesticide application, aiming to reverse the substantial losses incurred in papaya production. The project aimed to bring the cost closer to the budgeted amount, thus making the papaya business profitable.
Proposed contract manufacturing strategy for Baby Food Industry using Kepner-Tregoe and Analytic Hierarchy Process (AHP) Approach Zahara, Dhenok Puspita; Yudoko, Gatot
International Journal of Accounting and Management Information Systems Vol. 2 No. 1 (2024): February
Publisher : Goodwood Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35912/ijamis.v2i1.3044

Abstract

Purpose: This study aims to determine the most appropriate contract manufacturing strategy for PT. SA to ensure sustainable fulfillment of its MA baby food products, amidst regulatory changes and operational risks from overseas production. Methods: A mixed-method approach was employed, integrating qualitative methods (interviews and FGDs with Subject Matter Experts using Kepner-Tregoe and Why Tree analysis) and quantitative techniques through the Analytic Hierarchy Process (AHP). The criteria used for decision-making included cost, schedule, delivery, capacity, capability, and quality. Results: The AHP analysis identified schedule (32.95%) and cost (30.31%) as the most influential criteria. For short-term resolution, the strategy “Produce in existing contract manufacturing and distribute using a 3rd party trader” scored the highest (49.56%). For long-term sustainability, “Terminate existing manufacturing and produce in alternative local contract manufacturers in Indonesia” was the optimal choice (31.55%). Conclusion: Selecting the right strategy helps mitigate sales loss risk (up to IDR 97 billion annually), ensures product availability, and aligns with government import restrictions. Each alternative was evaluated for feasibility, risks, and potential savings. Limitation: This study is specific to PT. SA’s baby food segment and may not fully generalize to other industries or products with different supply chain dynamics or regulatory constraints. Contribution: The study contributes a structured decision-making model using Kepner-Tregoe and AHP to optimize contract manufacturing strategies, supporting firms in navigating supply chain disruptions under regulatory pressure.
OEE improvement through reducing start up duration using lean six sigma methodology in manufacturing Khisbulloh, Wijaya; Yudoko, Gatot
International Journal of Accounting and Management Information Systems Vol. 2 No. 2 (2024): August
Publisher : Goodwood Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35912/ijamis.v2i2.3225

Abstract

Purpose: This research focuses on improve OEE by reducing start-up duration using Lean Six Sigma methodology. By applying Lean Six Sigma tools and techniques, manufacturers can systematically analyse the start-up process, identify root causes of delays, and implement targeted improvements. Methodology/approach: The research presented in this journal comprises a comprehensive study conducted within a manufacturing setting to demonstrate the effectiveness of the proposed approach. The study involves the collection and analysis of data related to start-up durations, downtime reasons, and other relevant parameters. Through the DMAIC (Define, Measure, Analyse, Improve, Control) framework of Lean Six Sigma, the root causes of prolonged start-up durations are identified and addressed. Results: The results demonstrate the potential for significant OEE improvements through the elimination of bottlenecks and inefficiencies in the start-up process. Manufacturers can leverage the findings of this research to develop strategies that enhance operational effectiveness, increase production output, and ultimately drive competitive advantage in the dynamic landscape of modern manufacturing. Conclusions: Lean Six Sigma, through the DMAIC approach, effectively reduces start-up time and improves OEE. Addressing root causes leads to better equipment utilization and increased productivity. Limitations: This research limitation is only for manufacturing or production area that having OEE as their main key performance indicator. Contribution: This research will contribute to the manufacturing operation excellency.
PROPOSED STRATEGY OF MRO OPTIMIZATION IN COST-EFFECTIVE PROGRAM BY USING KEPNER-TREGOE ANALYSIS AND ANALYTICAL HIERARCHY PROCESS (AHP) Ariawan, Yona; Yudoko, Gatot
JEMIS (Journal of Engineering & Management in Industrial System) Vol. 11 No. 2 (2023)
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jemis.2023.011.02.3

Abstract

ADC Company is a global company which operates in the Middle East that has been running to supply the downstream users with its product such as Ethylene, Polyethylene and Polypropylene. The current performance and objectives show that we need to take a look at something that can be done possibly and take the initiative that can be improving the company’s performance, especially in this kind of situation. The current setup of Maintenance Repair and Operations or MRO of this company, has shown the value that this company has 43% Non-Moving Spare Part (PNM-SP) Material value that is excessive and has turned into a particular issue for the Company. However, there is an opportunity for the company to make more effective inventory through the inventory policy strategy and improvement. The higher the inventory value and the remaining items/materials that cannot be utilized, then the worse the inventory performance reflects. Therefore, the business problem could be identified and further transformed into a problem statement as Significant Potential Non-Moving Spare Part (PNM-SP) Materials all across the years have resulted in the inefficiency of Operational Expenditures (OPEX) which costs the company with unused/ never used bought materials associated with handling and maintaining cost produced by those (PNM-SP) materials. The objectives of this research are overcome or reduce the volume of Potential Non-Moving Spare parts (PNM-SP) Materials in our organization, and What tactics or alternative solutions exist to avoid massive Potential Non-Moving Spare parts (PNM-SP) Materials, along with the precautions that should be taken in the event happens in the future, by using Kepner Tregoe Analysis and Analytical Hierarchy Process (AHP). In this scenario, we will be utilizing some feedbacks from our references along with their major result.
Implementation of six sigma to improve SPIP (Facilities, infrastructure, instalations, and equipment) management at PT Berau Coal Suprapto, Juny; Yudoko, Gatot
Indonesian Journal of Multidisciplinary Science Vol. 3 No. 9 (2024): Indonesian Journal of Multidisciplinary Science
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/ijoms.v3i9.904

Abstract

The commissioning submission process is a significant safety program where contractors must pass a feasibility test to receive an operation feasibility sticker (SKO), ensuring that the unit is safe and ready for operation. The current commissioning process is lengthy and hindered by personnel competence issues and ineffective processes. The research aims to find out how to improve the SPIP management process to be more effective in supporting operational activities at PT Berau Coal but while maintaining mining safety management. A structured approach consisting of multiple phases is outlined, starting with an in-depth analysis of the current SPIP process. The findings are disseminated through formal presentations and reports, aiming to improve efficiency and effectiveness, evaluate centralization feasibility, and develop actionable recommendations for PT BERAU COAL. The proposed solution is to centralize the Commissioning process, improving people, processes, and technology, and eliminating detected waste and defects.
Proposed Improvement of Learning Course Development in Digital Telecommunication Company Nafila, Revina Nida; Yudoko, Gatot; Sulyani, Agnesia Candra; Alberto, Richard
Journal Research of Social Science, Economics, and Management Vol. 4 No. 11 (2025): Journal Research of Social Science, Economics, and Management
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jrssem.v4i11.874

Abstract

PT Digital Telecommunication Company (DTC) is a telecommunication company in Indonesia that is currently facing dynamic and competitive challenges in the telecommunication industry. The Corporate University Center (CUC), a support unit of PT DTC, is dedicated to enhancing the skills and knowledge of PT DTC employees in order to help the company achieve its strategic goals. Thus, CUC has developed Rencana Jangka Panjang Perusahaan (RJPP) 2025-2027 to continuously support the company strategy in the area of people development. Therefore, it is crucial to identify potential areas of improvement to ensure that CUC can effectively contribute to the success of PT DTC’s new strategy direction. This study focuses on the Learning Team at CUC, which aims to produce learning materials that enhance employee capabilities. To analyze this process, the study uses the ADDIE and Project Management framework to identify the operational process of learning design & development. By using the frameworks, CUC is expected to deliver high-quality learning materials that align with the company strategy effectively. Data collection is conducted by semi-structured interviews with five participants from the learning team, to explore the business strategy of the company and the day-to-day learning operations. The data was analyzed using NVivo 15 software, which generated word frequency queries to identify emerging themes. These themes were further analyzed through quotation analysis understand the contextual situation in the learning process. Data analysis results revealed six areas of improvement: Resource Management, Scalability Planning for High-Impact programs, Stakeholder Communication, Learner Participation, Learning Impact Measurement, AI Technology Enhancement.
A Practical Recovery Strategy for Delayed Construction Project: Insights from a Geothermal Cooling Tower Case Kusuma Anuraga, Hilarius Yuda; Yudoko, Gatot
Journal Research of Social Science, Economics, and Management Vol. 4 No. 12 (2025): Journal Research of Social Science, Economics, and Management
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jrssem.v4i12.902

Abstract

Project delays in construction often lead to significant financial consequences, particularly in terms of penalties specified in the project contract. This study addresses the cost-efficiency consideration behind the decision to implement project crashing through overtime, as opposed to accepting the penalty due to project delay. The research uses a case study of a geothermal power plant renovation project in Indonesia, which faced a ten-week delay caused by external factors. The study compares the penalty potential with the total cost of project crashing calculated. The results reveal that accelerating activities on the critical path only costs 17.02% of the potential penalty if no corrective actions are taken. This analysis emphasizes the importance of financial trade-offs in project decision-making and highlights that project crashing, when planned and executed properly, is a rational and cost-efficient strategy to recover from delays, provided it does not compromise project quality and scope. The study contributes to understanding the financial implications of project acceleration and offers insights for managers considering delay recovery strategies.
Co-Authors Abimanyu, Cristian Agung Pascasuseno Agus Suwarto Agus, Anna Amalyah Aji Nugraha Pratama Alberto, Richard Ananto Veryadesa, Ananto Andini, Trisnawati Anugrah Wangsa, Airin Ardiansyah, Pandu Zea Ariawan, Yona Arie Rachmadi Djunaedi Armanda Putra, Mochammad Ravi Astrid Hapsari Ningrum, Astrid Hapsari Aya Ishigaki Azizah, Mutiara Alena Bartholomeus Dewantoro Bayu Ananta Perwira, Bayu Ananta Benny Pahala Hutahaean Candrasmurti, Awindya Cashiwan, Cashiwan Daniel Happy Putra Dewi, Nurlaela Kumala Dewi, Nurlaela Kumala Dian Ekawati Eidelweijs A Putri Eko Agus Prasetio ES Heru Praptono, ES Heru Fadila Rusman, Denia Firmansyah Arifin, Firmansyah Firra Astria Noezar Fortranansi Firdaus, Devin Grimaldi, Gemma Hari Lubis Heru Purboyo Hidayat Putro Imaniya**, Taliya Imaniya, Taliya Isti R Mirzanti Jasmine, Tamara Latifah Kembaren, Pennoh Philips Kenji Koido Khisbulloh, Wijaya Kiyoshi Dowaki Krishna Permadi Krisna Uvala Hardi Kurniawan, Muslim El Hakim Kurniawan, Muslim El Hakim Kusnadi, Asana Kusuma Anuraga, Hilarius Yuda Kusumawardani, Farah Almira Lesmana, Haris Lestari, Ayu Gema Limowa, Agung lqsan Diaz Mariany W Lidia Miharja, Miming Miharja, Miming Miming Miharja Mudya, Dinda Ratna Muhamad Ibnu Fauzi Muhammad Hanafi Muhammad, Firdaus Yusri Mulyono*, Nurbudi Mursyid Hasan Basri Nafila, Revina Nida Natalia, Natalia Nur Budi Mulyono Nurlaela Kumala Dewi Parcelino Prabowo, Rommy Paseru, Alvito Tirano Permana, Tirta Wisnu Pradono, Pradono Pratiwi, Ratna Endah Prilandita, Niken Putra, Anar Arsyid Wali Masâ??ud Reyhan Zachary, Reyhan Rima Beladina Subekti, Rima Beladina Ruhaiya, Fikka Sanusi, Dudu Anwar Satria Yoelis Wardhana, Satria Yoelis Sony Susanto Stepanus Ady Triwidodo Sudarso Kaderi Wiryono Sulyani, Agnesia Candra Suprapto, Juny Surna Tjahja Djajadiningrat Surya Ibrahim Irsyam Sylviana Maya Damayanti Takeshi Arai Tatag Muttaqin Togar M Simatupang Wahyu Wirawan Wanda Listiani Widjajani Widjajani Yuanita Handayati Zahara, Dhenok Puspita