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All Journal Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri Jurnal Informasi dan Teknologi Jurnal Media Teknik dan Sistem Industri Jurnal Teknik Industri Terintegrasi (JUTIN) International Journal of Applied Technology Research Teknologika Jurnal Ilmiah Teknik (JUIT) JUSTI (Jurnal Sistem dan Teknik Industri) Journal of Management and Industrial Engineering (JMIE) Journal of Social Science and Business Studies Journal of Information System, Technology and Engineering Sainteks: Jurnal Sain dan Teknik KONTAN: Jurnal Ekonomi, Manajemen dan Bisnis
Oetomo, Dedy Setyo
Sekolah Tinggi Teknologi Wastukancana
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Other

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Usulan Perbaikan Proses Bisnis Departemen J20 di PT Indorama Synthetics Tbk dengan Menggunakan Metode Business Process Reengineering Dedy Setyo Oetomo; Rizky Fajar Ramdhani
Jurnal Media Teknik dan Sistem Industri Vol 5, No 2 (2021)
Publisher : Universitas Suryakancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35194/jmtsi.v5i2.1416

Abstract

The business process of the J20 production department is currently experiencing obstacles in terms of information delivery, production report, maintenance report, and problem information that causes decision making is often irrelevant. This is due to the use of paper media with a long bureaucratic flow so that the cycle time becomes inefficient. This study used business process reengineering, modeling business process in business process modeling notation (BPMN), and supporting research problem analysis used fishbone diagram. The result showed changes in a process flow, job desk, unit elimination, and proposed design of information systems in the form of application software as a solution to the problems studied, so that it is expected to obtain process time efficiency of 65.1% and cycle time of 99.2% of the previous total time. Proses bisnis departemen produksi J20 saat ini mengalami hambatan dalam hal penyampaian informasi, laporan hasil produksi, laporan maintenance, serta informasi problem, yang menyebabkan pengambilan keputusan sering kali terjadi bias. Hal ini di sebabkan oleh penggunaan media kertas dengan alur birokrasi yang panjang sehingga waktu siklus menjadi tidak efisien. Pada penelitian ini digunakan metode Business Process Reengineering, dengan memodelkan bisnis proses dalam Business Process Modelling Notation (BPMN), serta pendukung analisa masalah penelitian digunakan diagram tulang ikan. Hasil penelitian menunjukan adanya perubahan alur proses, jobdesk, eliminasi unit, serta usulan perancangan sistem informasi berupa software aplikasi sebagai solusi dari permasalahan yang diteliti, sehingga diharapkan dapat diperoleh efisiensi waktu proses sebesar 65,1% dan waktu siklus sebesar 99,2% dari total waktu sebelumnya.
ANALISIS BEBAN KERJA MENGGUNAKAN METODE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION TAKS LOAD INDEX DI PT XYZ PURWAKARTA Aldo Fauzi Dherryawan; Asep Hermawan; Dedy Setyo Oetomo
Journal of Management and Industrial Engineering (JMIE) Vol. 3 No. 2 (2024): Journal of Management and Industrial Engineering (JMIE)
Publisher : LPPM Sekolah Tinggi Teknologi Nusantara Lampung

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

Abstract

Currently, companies are required to compete in maintaining the existence of customer satisfaction so that the company can survive amidst intense competition. In order to maintain intense competition, productivity in the production line must be increased. The impact of increasing activity on the production line is that the workload on production employees increases, which causes several problems. One of the problems faced by employees is excessive workload due to physical and mental stress. Conditions like this are being experienced by PT XYZ Purwakarta. From this condition, it is necessary to carry out a workload analysis. One of the appropriate workload methods for this analysis is the National Aeronautics and Space Administration Tax Load Index (NASA TLX) workload analysis method. NASA TLX is a workload analysis method used to analyze the mental workload faced by workers with several indicators that are used as assessments such as mental demand (MD), physical demand (PD), temporal demand (TD), performance (P), effort ( EF) and frustrated level (FR) (Hart & Stavelend, 1988).
Study of Green Supply Chain Implementation in the Sport Shoe Industry in Indonesia to Gain Competitive Advantage Oetomo, Dedy Setyo; Hermawan, Asep; Widowati, Imas
Sainteks: Jurnal Sain dan Teknik Vol 7 No 01 (2025): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v7i01.872

Abstract

This study examines the implementation of Green Supply Chain Management (GSCM) in the Indonesian sports shoe industry and its impact on the company's competitive advantage. The objectives of the study were to analyze GSCM practices implemented by the Indonesian sports shoe industry, identify factors that influence the success of GSCM implementation, and measure its impact on the company's environmental performance and competitive advantage. The study used a quantitative approach with a survey method on 120 APRISINDO member sports shoe companies. Data analysis used Structural Equation Modeling (SEM) with AMOS software. The results showed that the implementation of GSCM including green purchasing, eco-design, green manufacturing, and reverse logistics had a significant positive effect on environmental performance (β=0.672, p<0.01) and competitive advantage (β=0.583, p<0.01). The main supporting factors for the success of GSCM were top management commitment, green technology capabilities, and collaboration with suppliers. This study provides theoretical and practical contributions to the development of GSCM in the Indonesian sports shoe industry.
Feasibility Study for Construction of N-Type HJT Solar Cell Manufacturing Plant with Production Capacity of 2 GWp in Batang Industrial Estate, Indonesia Dedy Setyo Oetomo; Rabiatul Adwiyah
Journal of Social Science and Business Studies Vol. 3 No. 1 (2025): JSSBS
Publisher : Yayasan Gema Bina Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61487/jssbs.v3i1.126

Abstract

This study evaluates the technical and economic feasibility of establishing a 2 GWp N-Type heterojunction (HJT) solar cell manufacturing facility in Batang Industrial Estate, Indonesia. The proposed plant utilizes predominantly Chinese-manufactured equipment for key processes including PECVD systems, metallization lines, and testing equipment, with silicon wafers as the primary raw material. A comprehensive analysis incorporating technical, financial, operational, and market aspects demonstrates project viability with an IRR of 18.2% and payback period of 5.3 years. The total investment of USD 850 million encompasses equipment, infrastructure, and working capital. Results indicate favorable technical feasibility with established equipment manufacturers meeting international quality standards. Financial analysis shows strong potential returns, supported by growing regional solar panel demand and Batang's strategic advantages. Key risks identified include silicon wafer price volatility, technological obsolescence, and market competition, with structured mitigation strategies proposed.
A Dynamic System Model for Multi-Echelon Inventory Policy Optimization Considering Bullwhip Effect and Supply chain Disruptions in the Sport Footwear Industry oetomo, Dedy Setyo; Fajar Ramdhani, Rizky; Hermawan, Asep
Jurnal Teknologika Vol 15 No 1 (2025): Jurnal Teknologika
Publisher : Sekolah Tinggi Teknologi Wastukancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51132/teknologika.v15i1.447

Abstract

This research develops a dynamic system model to optimize inventory policies in multi-echelon supply chains within the sport footwear industry, addressing challenges from the bullwhip effect and supply chain disruptions. The sports footwear sector faces unique inventory management challenges due to complex demand patterns influenced by seasonality, fashion trends, and competitive dynamics. Our comprehensive system dynamics model captures the intricate relationships between four supply chain echelons: retailers, distributors, manufacturers, and raw material suppliers. The model integrates machine learning algorithms—specifically Long Short-Term Memory (LSTM) neural networks—for adaptive demand prediction and employs genetic algorithm optimization to determine optimal inventory parameters under various disruption scenarios. Using real-world data from a leading sports footwear manufacturer, we validated the model under normal operations and three distinct disruption scenarios: raw material shortages (45% reduction for 6 weeks), manufacturing capacity constraints (30% reduction for 8 weeks), and transportation disruptions (doubled lead times for 4 weeks). Results demonstrate that our proposed hybrid model reduces overall inventory costs by 18.7% compared to traditional policies while maintaining a 97.2% service level. The integration of machine learning for demand forecasting reduced prediction errors by 43.6% compared to conventional methods, directly mitigating the bullwhip effect by decreasing the order variability coefficient from 0.89 to 0.61 at the supplier level. Furthermore, the model enhanced supply chain resilience by reducing recovery time by 42% following major disruptions. This research contributes to the theoretical understanding of complex supply chain dynamics and practical applications for inventory management in volatile industries, offering a robust framework for decision-making under uncertainty.
Feasibility Study of Nickel Mixed Hydroxide Precipitate (MHP) Smelter Construction Plan with High Pressure Acid Leaching (HPAL) Technology Santika, Dewi; Oetomo, Dedy Setyo; Yudha , Haris Sandi
Journal of Social Science and Business Studies Vol. 3 No. 3 (2025): JSSBS
Publisher : Yayasan Gema Bina Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61487/jssbs.v3i3.171

Abstract

This study evaluates the feasibility of building a nickel Mixed Hydroxide Precipitate (MHP) plant of PT. X with a capacity of 12,000 tons per year. The analysis shows that the potential demand for MHPs in the national and global markets continues to increase, driven by the growth of the nickel battery-based electric vehicle industry. The planned production capacity is projected to be optimally absorbed. The plant is designed using High Pressure Acid Leaching (HPAL) technology that utilizes low-grade nickel ore from multiple locations to reduce dependence on a single mine. Other supporting factors include adequate infrastructure, manpower, regulatory support, and market potential. Raw material requirements per year include 414,000 tons of laterite ore, 148,100 tons of H₂SO₄, 41,700 tons of CaO, and 2,870 tons of MgO. Initial investment (CAPEX) is estimated at $108.8 million with an annual operating expense (OPEX) of $93.5 million. The main equipment includes an autoclave, thickener, filter press, and rotary dryer. Financial analysis shows the project is feasible with a Payback Period of 4.85 years, an IRR of 19% above the MARR of 15%, and a positive NPV of $14.03 million at a discount of 19%. The sensitivity test showed that the project remained viable despite increased operational costs, so it was considered technically and financially prospective to support Indonesia's nickel downstreaming.
Feasibility Study for The Proposed Poultry Feed Manufacturing Plant by PT. X: Implementing Agricultural Commodity Downstreaming in Gresik, East Java Rahmah, Mutiara Julia; Oetomo, Dedy Setyo; Ramdhani, Rizky
Journal of Social Science and Business Studies Vol. 3 No. 3 (2025): JSSBS
Publisher : Yayasan Gema Bina Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61487/jssbs.v3i3.173

Abstract

This study aims to analyze the feasibility of establishing a poultry feed factory by PT. X in Gresik, East Java, as part of Indonesia’s national agricultural downstreaming strategy. The feasibility study evaluates multiple aspects, including technical and technological considerations, raw material availability, and market and marketing potential, particularly for both domestic and export opportunities. The assessment also includes the estimation of local raw material requirements and the identification of appropriate equipment and technology for the factory’s operations. From a market perspective, the study evaluates current and projected demand for poultry feed products, supported by the growing livestock sector and increasing export prospects. From a financial standpoint, the project shows strong viability. Key financial indicators demonstrate positive outcomes: the Net Present Value (NPV) is greater than zero, the Internal Rate of Return (IRR) exceeds the prevailing loan interest rate, and the Payback Period falls within an acceptable and efficient timeframe. These indicators collectively reflect the project’s potential to generate sustainable profits and recover the initial investment within a reasonable period. Considering all evaluated aspects, the development of PT. X's poultry feed factory in Gresik is deemed feasible in terms of technical implementation, market potential, and financial returns. Moreover, the project aligns with national objectives to enhance agricultural value chains through industrial downstreaming, optimize the use of local resources, and contribute to regional and national economic development. As such, the proposed investment not only supports agribusiness growth but also reinforces broader economic resilience and food security initiatives in Indonesia.
A Feasibility Study Of 100 Kl/Day Bioethanol Plant From Sugarcane Production As Part Of National Energy Mix Strategy Oetomo, Dedy Setyo
Sainteks: Jurnal Sain dan Teknik Vol 7 No 02 (2025): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v7i02.959

Abstract

This study evaluates the technical and economic feasibility of constructing a 100 KL/day bioethanol production plant from sugarcane as part of Indonesia's national energy mix strategy. The research employs comprehensive analysis including mass balance, energy balance, technical design, and financial evaluation. The plant design utilizes fermentation and distillation processes with an annual production capacity of 36,500 KL bioethanol. Mass balance calculations show that 1,200 tons/day of sugarcane feedstock is required, producing 100 KL ethanol, 480 tons bagasse, and 120 tons vinasse daily. Energy balance analysis indicates the plant can achieve energy self-sufficiency through bagasse combustion for steam and electricity generation. Technical evaluation confirms the feasibility of implementing proven bioethanol production technology. Financial analysis reveals total investment requirement of USD 45.2 million with Net Present Value of USD 12.8 million, Internal Rate of Return of 18.5%, and payback period of 6.2 years at 12% discount rate. Sensitivity analysis demonstrates project robustness against feedstock price and ethanol selling price variations. The study concludes that the bioethanol plant is technically feasible and economically viable, contributing significantly to Indonesia's renewable energy targets and rural economic development while reducing dependency on fossil fuel imports
Dynamic System Modeling Analysis of CPO-FAME-Biodiesel Distribution for B40 Quota Fulfillment in Java Island 2025 Shaleha, Rahma Luthfia; Oetomo, Dedy Setyo; Ramdhani, Rizky Fajar
Journal of Information System, Technology and Engineering Vol. 3 No. 3 (2025): JISTE
Publisher : Yayasan Gema Bina Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61487/jiste.v3i3.172

Abstract

This research aims to analyze the distribution cost structure and transportation requirements for CPO-FAME-Biodiesel to meet B40 quota implementation in Java Island using a dynamic system approach. This study uses dynamic system simulation with Vensim software to model CPO-FAME-Biodiesel distribution from Sumatra and Kalimantan to Java Island, utilizing data from Ministry of Energy and Mineral Resources and GAPKI with 2025 projections. The simulation reveals that meeting the B40 quota in Java Island requires substantial infrastructure investment with total transportation costs exceeding IDR 1.3 trillion, highlighting the massive scale and logistical complexity of national biodiesel implementation. Analysis identifies fleet tariff, shipping frequency, fleet capacity, raw material prices, and conversion ratios as the primary cost drivers affecting distribution efficiency. Cost optimization can be achieved through strategic shipping frequency management, capacity optimization, efficient fleet fuel management, and implementation of centralized production systems with hub-and-spoke distribution networks. This research contributes essential strategic insights for policymakers in developing cost-effective transportation frameworks and infrastructure planning for Indonesia's national biodiesel policy implementation.
Co-Authors Afif Fawa Idul Fata Akhsani Nur Amalia Aldo Fauzi Dherryawan Ari Putri Abdi Arijanti, Susi ASEP HERMAWAN Asep Hermawan Asep Hermawan Asep Hermawan Dendy K. Pramudito Dewi Santika Fatah, Abdurrohim Febrian, Angga Arisandi Imas Widowati Kraugusteeliana Kraugusteeliana Muhammad Bisyri Nada Muhammad Danial Nuri Aslami Rabiatul Adwiyah Rahmah, Mutiara Julia Rizky Fajar Ramdhani Rizky Ramdhani, Rizky Shaleha, Rahma Luthfia Siti Zaenab Nur Hasanah Wanwan Jamaludin Yanto RUkmana, Arief Yudha , Haris Sandi