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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 Jurnal Locus Penelitian dan Pengabdian The South East Asian Journal of Management Journal Research of Social Science, Economics, and Management Journal of Business, Social and Technology International Journal of Entrepreneurship and Sustainability Studies IIJSE 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 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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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.
Sustainable Performance Model and Strategy: A Conceptual Framework Arifin, Firmansyah; Wiryono, Sudarso Kaderi; Damayanti, Sylviana Maya; Yudoko, Gatot
International Journal of Entrepreneurship and Sustainability Studies Vol. 3 No. 2 (2023): December 2023
Publisher : Research Synergy Foundation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31098/ijeass.v3i2.1904

Abstract

This study is driven by the conditions of the energy sector, particularly the "oil field service industry" which serves as the main pillar of this sector. The significant oil price drop and the need for cost-cutting among oil and gas producers shows the vulnerabilities in this sector, necessitating improvement. Generally, industries that support key commodities must exhibit strong operational performance that intricately intertwines with the corporate strategy, mitigating potential obstacles, challenges, and business risks in order to achieve sustainable performance. Thus, this research aims to investigate how to develop a sustainable performance model for the industry in helping the industries the current and future business challenges. A systematic literature review was undertaken, encompassing prior studies on sustainable business, performance, and risk management strategies. This study investigates the dynamic interaction between three primary constructs: (1) context-business sustainability, (2) content-performance management, and (3) process-strategy formulation. Finally, gaps in the existing literature were identified and several future research directions were proposed.
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.
A Structured Decision Framework for Improving Solar PV Integration and Frequency Stability Using Kepner–Tregoe and Analytical Hierarchy Process: A Case Study of PT OEC Hidayat, Saiful; Yudoko, Gatot
Jurnal Locus Penelitian dan Pengabdian Vol. 5 No. 1 (2026): JURNAL LOCUS: Penelitian dan Pengabdian
Publisher : Riviera Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58344/locus.v5i1.5521

Abstract

The increasing penetration of solar photovoltaic (PV) generation in industrial power systems provides significant opportunities for fuel reduction and sustainability improvement. However, high PV penetration also introduces operational challenges related to power variability and grid frequency stability, particularly in systems with limited inertia and spinning reserve. This study proposes a structured managerial decision framework to address solar PV integration challenges at PT OEC by combining Kepner–Tregoe (KT) problem analysis and the Analytic Hierarchy Process (AHP). Solar PV performance and grid frequency behavior were first analyzed to identify whether observed disturbances were caused by technical failure or structural system limitations. KT analysis was then applied to validate the root causes of frequency instability events. Based on the identified causes, four alternative solutions were evaluated using AHP across multiple criteria, including frequency stability improvement, PV energy yield impact, investment cost, implementation complexity, and operational maintainability. The results indicate that Battery Energy Storage System (BESS) is the most preferred strategic solution, followed by gas turbine spinning reserve optimization and PV–GT coordination procedures. Sensitivity analysis confirms that while BESS dominates under reliability-focused priorities, operational measures remain relevant under cost- and time-constrained scenarios. The study demonstrates that combining KT and AHP provides a robust decision-making framework for balancing reliability, cost, and long-term value in solar PV integration.
CONTINUOUS IMPROVEMENT OF DRILLING ULTRA-SHALLOW HORIZONTAL WELL THROUGH LEAN SIX SIGMA METHODOLOGY Wahyudi, Petrus Tri; Yudoko, Gatot
JEMIS (Journal of Engineering & Management in Industrial System) Vol. 7 No. 2 (2019)
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jemis.2019.007.02.4

Abstract

Low oil price environment impacted to business of Oil and Gas Company including PT. SDEC. However, PT. SDEC was able securing limited and fixed capital budget to drill well and had committed to drill certain well number to Government of Indonesia. When the initial 12 wells were completed with longer cycle time (average 9.9 days/well) than business plan (7.5 days/well) and also higher cost, the problem became more complex because company need to complete well as per commitment and in other hand no additional capital will be spent by parent company if actual expenditure exceeded the initial budget. Company assigned a team to solve the problem through Lean Six Sigma. Through strong collaboration among team, the project execution performance was improved (the Cp of drilling cycle time was improved from 0.06 to 1.08). As the result of this project save cost around $ 2.8 million.
STATISTICAL PROCESS CONTROL IMPLEMENTATION AS EARLY WARNING SIGNAL FOR SAFETY INTERVENTION IMPROVEMENT AT MINING OPERATION Nugraha, Arya; Yudoko, Gatot
JEMIS (Journal of Engineering & Management in Industrial System) Vol. 8 No. 2 (2020)
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

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

Abstract

As the frequency, severity, and costs of safety risks continue to become a challenge for mining industry, the company understood that the existing safety analytic does not provide adequate information, as it has been relying predominantly on collecting and evaluating aggregated data of lagging indicators about past accidents. This method has been negatively driving the organization to carry out repetitive cycle of accident analysis and problem solving, and therefore, undertaking reactive responses. This paper investigated how statistical process control, in particular control charts, can be applied to hazards data, as the leading indicator of accidents, to detect statistically trends in safety process and safety behavior, aiming to control the safety process in real-time manner before the occurrence of accidents. The result showed that the latest iteration of control limits development in Phase 3 is suitable as the control chart for safety process in one of case study mine operation site. Furthermore, the implementation of control charts to hazards data not only it helps the organization to transition its safety analytic to leading indicator analysis, it enables the organization to control safety process in real-time practice and to carry out timely safety intervention long before the potential occurrence of severe accidents, in which within this case, the first early warning signal was triggered 49 days before the occurrence of the fatality accident.
INDUSTRIAL ECOLOGY AS THE PRECURSOR GRAND THEORIES TO CIRCULAR ECONOMY: BIBLIOGRAPHIC MAPPING OF 112 LITERATURE Sitadewi, Dania; Yudoko, Gatot; Okdinawati, Liane
JEMIS (Journal of Engineering & Management in Industrial System) Vol. 9 No. 2 (2021)
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

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

Abstract

Abstract: Environmental degradation require business to rethink their way of doing business. Industrial Ecology (IE) is a paradigm change that allows a cyclical resource-use in which Circular Economy (CE) rethink and recycle the waste generated into a industrial input, thereby reducing environmental burden. Industrial Ecology (IE) is one of the most referenced grand theories for Circular Economy (CE). This research aims to map IE to CE bibliographically to identify research trends, prominent researchers, and countries with the most publication. This research's methodology is bibliographic mapping of 112 articles using VOSviewer in three steps: data acquisition, data processing, and visual output. This research has identified three research findings. The first finding is the identification of five clusters that correspond with the current research trend. The second finding is identifying Geng Y., Lai K.H., and Zhu Q. as the leading researchers for CE and IE. The third finding is China is the leading country for CE and IE research. The implication is China aiming to transform its industry into environmentally more sustainable. Future research topic venue can incorporate other grand theories to expand the theoretical and practical focus of CE.
Co-Authors Abimanyu, Cristian Abizar, Muhammad Rival Agung Pascasuseno Agus Suwarto Agus, Anna Amalyah Aji Nugraha Pratama Ananto Veryadesa, Ananto Andini, Trisnawati Anugrah Wangsa, Airin Ariawan, Yona Arie Rachmadi Djunaedi Arya Nugraha Astrid Hapsari Ningrum, Astrid Hapsari Aya Ishigaki 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, Heru Purboyo Hidayat Imaniya**, Taliya Imaniya, Taliya Isti R Mirzanti Jasmine, Tamara Latifah 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 LIANE OKDINAWATI, LIANE lqsan Diaz Mariany W Lidia Miming Miharja Mudya, Dinda Ratna Muhamad Ibnu Fauzi Muhammad Hanafi Muhammad, Firdaus Yusri Mulyono*, Nurbudi Mursyid Hasan Basri Natalia, Natalia Nur Budi Mulyono Nurlaela Kumala Dewi Parcelino Prabowo, Rommy Permana, Tirta Wisnu Pradono, Pradono prasetyo, puguh Pratiwi, Ratna Endah Prilandita, Niken Putra, Anar Arsyid Wali Masâ??ud Qoshoshi, Ahsanul Reyhan Zachary, Reyhan Rima Beladina Subekti, Rima Beladina Saiful Hidayat Satria Yoelis Wardhana, Satria Yoelis Sitadewi, Dania Sony Susanto Stepanus Ady Triwidodo Sudarso Kaderi Wiryono Suprapto, Juny Surna Tjahja Djajadiningrat Surya Ibrahim Irsyam Sylviana Maya Damayanti Takeshi Arai Tatag Muttaqin Togar M Simatupang Wahyu Wirawan Wahyudi, Petrus Tri Wanda Listiani Widjajani Widjajani Yuanita Handayati Zahara, Dhenok Puspita