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Bagus Wahyu Utomo
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Department of Industrial Engineering Adisutjipto Institute of Aerospace Technology Jl. Majapahit, Blok-R, Lanud Adisutjipto Yogyakarta
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Jurnal Manajemen dan Teknologi Rekayasa
Published by Institut Teknologi Dirgantara Adisutjipto
ISSN : 29640741     EISSN : 29627079     DOI : http://dx.doi.org/10.28989/jumantara.v1i1
Core Subject : Science, Engineering,
Control & Systems Engineering Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering Mechanical Engineering
JUMANTARA is a journal that publishes scientific articles from the Industrial Engineering discipline. JUMANTARA is published by the Industrial Engineering Study Program of Institut Teknolgi Dirgantara Adisutjipto. JUMANTARA accepts manuscripts or articles in industrial engineering from various academics and researchers, both nationally and internationally. The articles published in JUMANTARA include the results of scientific research covering fields of study, including: Production System Work system design and ergonomics Industrial Management Supply Chain Inventory System Scheduling System Performance measurement Industrial Automation System Optimization Simulation Reliability Maintenance management Economics Engineering Manufacturing process and other relevant fields of study
Arjuna Subject : Teknik (semua kategori) - Tenik Industri dan Manufaktur
Articles 10 Documents
 1 
Search results for , issue "Vol 5, No 1 (2026)" : 10 Documents clear
Identification and Evaluation of Waste in Animal Feed Production Line Using an Integrated VSM and VALSAT Approach Anggita, Putri; Wati, Piguna; Izzuddin, Sabiq Dimas; Mukhtar, M. Nushron Ali
JUMANTARA: Jurnal Manajemen dan Teknologi Rekayasa Vol 5, No 1 (2026)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/jumantara.v5i1.3123

Abstract

This study evaluates the application of Lean Manufacturing principles using the Value Stream Mapping (VSM) methodology to systematically identify and eliminate waste in the production operations of the breeding animal feed division of PT XYZ. This issue is crucial because the high demand for feed products, especially in the breeder division of PT XYZ, requires the company to make continuous process improvements. This study aims to evaluate the application of Lean Manufacturing principles using the Value Stream Mapping (VSM) and Value Stream Analysis Tools (VALSAT) approaches to identify and eliminate waste in the livestock feed production line. Primary data collection included direct observation studies, structured questionnaires, and in-depth interviews with operators, supplemented by secondary data obtained through a systematic literature review. The application of Value Stream Analysis Tools (VALSAT) revealed that process inefficiencies mostly stemmed from waiting time, product defects, and excessive production output. The VSM analysis of the current condition showed a value-added ratio of 69.05%, with the mapping of the future condition after intervention showing an increase to 70.49%. [Deleted]. This study produced actionable operational recommendations, enabling PT XYZ to align its production system with contemporary industry benchmarks for optimal performance.
The Implementation of an Integrated Pull System to Improve Work Effectiveness in the Raw Material Laboratory of PT. XYZ Chairani, Aproditha Alya; Merdikawati, Silvia; Sudri, Ni Made
JUMANTARA: Jurnal Manajemen dan Teknologi Rekayasa Vol 5, No 1 (2026)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/jumantara.v5i1.3566

Abstract

PT. XYZ is a company in the cosmetics sector. In its product development process, the raw material laboratory in the R&D division experienced obstacles in the raw material trial process, which caused 15.2% of trial journals to be temporarily halted and placed on hold. This research was conducted to maintain the availability of raw materials in the laboratory and improve the smoothness of the trial process. The approach used was quality control and improvement through the concept of a pull system, lean manufacturing, and the Quality Control Circle method. Improvements made included the implementation of a pull system for raw material management, rescheduling of checking and material preparation pickets, and strengthening personnel discipline towards SOPs in all trial stages. The evaluation results showed a decrease in the number of obstacles per week from 10 obstacles to 0 obstacles in the 10th week of 2025. This research contributes to providing a model for improving laboratory efficiency through the integration of a pull system to increase speed and accuracy in the product development process.
Analysis of Downtime Common Rail Deutz Technology Engine Using RCM Methods Darmawan, Rachmat; Julian, Fajar Azhari; Rachmayani, Novianti; Mulyana, Andri; Rochim, Abdul
JUMANTARA: Jurnal Manajemen dan Teknologi Rekayasa Vol 5, No 1 (2026)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/jumantara.v5i1.3451

Abstract

This study aims to analyze and minimize engine downtime on Deutz common rail technology using the Reliability Centered Maintenance (RCM) approach on the TMX-450 Pushback unit which is commonly used in the aviation industry. The analysis uses quantitative data based on downtime data and intervals related to downtime frequency data on injector components which have recorded failure parts with a frequency of 10 times and accumulated downtime of 21 hours. The results of the analysis on downtime values before and after the implementation of RCM are the inspection schedule increased from 5% to 12%, the repair schedule increased from 24% to 49%, the discharge schedule increased from 10% to 19%, and of course no treatment decreased significantly from 61% to 20%. The conclusion is that the implementation of RCM reduces total downtime by 30% and provides an increase in component reliability to 98.8% which shows that RCM is effective in optimizing maintenance scheduling.
Evaluation of Hybrid Classroom Implementation in Room A101 Alifudin, Ilham; Irwan, Hery
JUMANTARA: Jurnal Manajemen dan Teknologi Rekayasa Vol 5, No 1 (2026)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/jumantara.v5i1.3494

Abstract

The rapid development of information and communication technology (ICT) has accelerated the adoption of blended learning in higher education, combining traditional classroom instruction with online participation. To support this approach, universities require hybrid classroom systems that allow synchronous interaction between on-site and remote students. This study presents the design and implementation of a hybrid classroom in Room A101 using affordable and easily accessible devices. The system was built with a webcam connected to a mini PC and monitor, a wireless clip-on microphone integrated with the lecturer’s laptop, a projector supported by an HDMI switcher, and a stable internet connection. Implementation followed five stages: needs analysis, system design, installation, workflow, and evaluation. Technical testing covered video, audio, speaker performance, and internet stability, while user surveys captured perceptions of effectiveness. Results showed the system delivered acceptable 720p video, clear audio, and stable connectivity. Survey feedback indicated satisfaction levels of 82% for video, 88% for audio, 75% for speaker performance, and 84% overall. These findings confirm that low-cost hybrid classroom solutions can enhance flexibility, inclusivity, and accessibility in higher education, while remaining practical and replicable in similar institutional contexts.
Bibliometric Analysis of UAV/Drone Maintenance Publications Santoso, Prasidananto Nur; Poerwanto, Eko; Pinandhita, Lazuardy Rahendra; Zabidi, Yasrin; Mauidzoh, Uyuunul; Rahmawati, Fajar Khanif
JUMANTARA: Jurnal Manajemen dan Teknologi Rekayasa Vol 5, No 1 (2026)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/jumantara.v5i1.2898

Abstract

This study highlights the lack of comprehensive studies on UAV (Unmanned Aerial Vehicle) and drone maintenance, despite numerous bibliometric studies conducted in other fields. This knowledge gap on this crucial aspect of UAV technology necessitates an in-depth analysis of the existing literature. The primary objective of this study is to conduct a bibliometric analysis of publications related to UAV/drone maintenance to map the literature, identify trends, and highlight contributions from different countries, universities, and authors. The analysis was conducted by collecting metadata from 30 years of academic publications (1994–2024) indexed in databases such as Scopus, and using VOSViewer to visualize the bibliometric network. Expected outcomes include identification of the most influential publications, authors, and journals, mapping research trends, and insights into collaboration opportunities between researchers and institutions. These findings are expected to guide future research by providing research topic recommendations to address existing literature gaps. Overall, this study offers a comprehensive overview that enriches the literature and encourages significant innovation in UAV/drone maintenance.
Inventory Control of Coffee Raw Materials Using The Economic Order Quantity (EOQ) Method Hapsari, Yaning Tri; Dwinugroho, Theofilus Bayu; Anton, Anton
JUMANTARA: Jurnal Manajemen dan Teknologi Rekayasa Vol 5, No 1 (2026)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/jumantara.v5i1.3416

Abstract

Management of raw material supplies at the Kopi Merapi Babadan is still carried out conventionally. The purchase of raw materials made by the Kopi Merapi Babadan did not have a plan and was based on estimates only. This often causes a mismatch in the existing raw material inventory with the number of raw materials to be processed in the production process, causing the costs incurred to purchase raw materials inappropriately. The EOQ method is a method that is often used in supply chain concepts. Applying the Economic Order Quantity (EOQ) method can provide an estimate of the raw material requirements that will be used in the production process to balance the expenditure of raw materials and the products produced. This research aims to control the supply of coffee beans using the EOQ method. The data collected is in the form of data on the amount of raw materials needed, the number of orders for raw materials, ordering costs, and storage costs. The savings that the Company can make by implementing EOQ for optimal orders are IDR 550.000,- or 31,34%. The company saves IDR 294,020 (24.50%) by coordinating with suppliers compared to using EOQ without coordination. The company can save 48.23% or IDR 844,020 if it uses EOQ with supplier coordination, compared to the company's actual conditions.
Design of the Cassava Slicing Machine Using the Pahl & Beitz Method (Case Study on a Chips MSME in Wonosobo, Central Java) Nugroho, Catur Rizki; Marfuah, Hasti Hasanati
JUMANTARA: Jurnal Manajemen dan Teknologi Rekayasa Vol 5, No 1 (2026)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/jumantara.v5i1.2982

Abstract

The design of a cassava slicing machine using the Pahl & Beitz method serves as a solution to improve production capacity and work efficiency in a cassava chips MSME located in Wonosobo, Central Java. The manual cassava slicing process often requires a long time, increases the risk of injury, and produces non-uniform slices. The Pahl & Beitz method is applied through four main stages: task clarification, concept development, form design, and design evaluation. This study presents novelty in implementing a V-belt and pulley-based transmission system with a compact dimensional configuration adapted to the limited production space of MSMEs, as well as the use of type 304 stainless steel to ensure product hygiene and machine durability. Compared to conventional slicing machines, this design demonstrates an increase in capacity of up to 70 kg/hour, along with better energy efficiency and operator safety. This research is expected to serve as a reference for the development of appropriate technology to support MSMEs in the food processing sector, enhance competitiveness, and meet the growing market demand.
Human-Centered Culinary Packaging Design: A Case of Oryza sativa L. indica Sticker Design Putra, Perdana Suteja; Brillianti, Grahita Prisca; Komariah, Kokom
JUMANTARA: Jurnal Manajemen dan Teknologi Rekayasa Vol 5, No 1 (2026)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/jumantara.v5i1.3420

Abstract

Black rice (Oryza sativa L. indica) is increasingly recognized for its nutritional benefits, including high antioxidant content, dietary fiber, and gluten-free properties. However, limited market penetration persists due to unappealing and uninformative packaging. This study aimed to design and validate a packaging sticker prototype for black rice using a human-centered approach. The research employed the design thinking framework—empathize, define, ideate, prototype, and test—with active participation from 20 farmers, 2 sellers, 2 ergonomics experts, and 20 consumers. Insights from stakeholders highlighted the need for branding authenticity, nutritional claims, halal certification, cooking instructions, and visual elements that balance cultural identity with premium appeal. The resulting prototype featured the brand “Beras Hitam Klaten,” clear health claims, preparation guidance, halal and regulatory information, and a balanced color scheme of earthy brown and gold accents. Validation with the USE Questionnaire demonstrated strong usability performance, with average scores of 4.5 for usefulness, 4.6 for satisfaction, 4.4 for ease of use, and 4.7 for ease of learning. Farmers and sellers reported improved confidence in marketing, while consumers appreciated the clarity and trust cues embedded in the design. The study concludes that integrating human-centered design principles into packaging development can significantly enhance product competitiveness for smallholder agribusiness, with implications for broader adoption in local food systems and SME innovation.
Design of Recommendation Decision Support System ITERA Industrial Engineering Students' Final Project Topic with Method Case-Based Reasoning and Certainty Factors Yanuarso, Hersa Dwi; Kusuma, David; Muttaqin, Muhammad Faishal Jundana; Hadi, M. Zaky; Didin, Fatin Saffanah
JUMANTARA: Jurnal Manajemen dan Teknologi Rekayasa Vol 5, No 1 (2026)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/jumantara.v5i1.3525

Abstract

Design of Decision Support System (DSS) for final project topic recommendation for ITERA Industrial Engineering students by integrating Case-Based Reasoning (CBR) and Certainty Factor (CF) methods used to support this research. A common problem is when determining the final project research topic, where most students have difficulty finding a topic that is in accordance with their respective fields of expertise. This causes the final project to take longer than the estimated standard time for graduates, which is normally between 4-5 years. The purpose of this study is to assist final year students in determining the final project title that suits their preferences and academic needs. The CBR method is used to search and compare cases based on case similarities with data contained in the database, while the CF value is applied to handle uncertainty and provide a level of confidence in the resulting recommendations. The results show that the integration of these two methods improves the accuracy and relevance of recommendations, as well as providing better transparency through the presentation of Certainty Factor values. System evaluation shows a high level of user satisfaction and a decrease in the time required to determine the final project topic. The design and development of a decision support system for final project topic recommendations was successfully carried out by integrating the Case-based Reasoning and Certainty Factor methods implemented on web hosting, performance evaluation and the impact of system use on user satisfaction showed that users felt satisfied when using the decision support system.
Marketing Strategy of Kopi Sejati Products Using SWOT, Marketing Mix 4P, and Boston Consulting Group (BCG) Matrix Vicky, Agnes; Baharuddin, Andi Velahyati; Dewi, Dewi
JUMANTARA: Jurnal Manajemen dan Teknologi Rekayasa Vol 5, No 1 (2026)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/jumantara.v5i1.3463

Abstract

Kopi Sejati is a micro, small, and medium enterprise (MSME) in Makassar engaged in the production and sale of locally roasted coffee. Its marketing activities remain limited, relying mainly on exhibitions and direct sales by the owner, with minimal utilization of digital platforms. This study aims to formulate an effective marketing strategy through the integration of SWOT analysis, Marketing Mix (4P), and the Boston Consulting Group (BCG) Matrix. The research employs a descriptive qualitative and quantitative approach, with data obtained from observation, interviews, questionnaires, and sales documentation from 2023–2024.The findings indicate that the most suitable strategy for Kopi Sejati is the Strength–Opportunity (SO) strategy, with total IFAS and EFAS scores of 4.20 and 4.22, placing the business in Quadrant I (aggressive growth strategy). The BCG Matrix identifies Kopi Sejati as a Cash Cow, with a relative market share of 1.25 and an industry growth rate of 4.2%, reflecting a strong yet stable position. The Marketing Mix (4P) analysis highlights product quality and competitive pricing as strengths, while promotion and distribution require improvement. Strengthening digital marketing, forming a dedicated marketing team, and expanding distribution networks are projected to increase market reach by 30% and boost sales by at least 20% annually.

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