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OPERATION EXCELLENCE: Journal of Applied Industrial Engineering
Published by Universitas Mercu Buana
ISSN : 2085429     EISSN : 26545799     DOI : 10.22441/oe
Core Subject : Science,
Decision Sciences, Operations Research & Management
The aim of Operations Excellence: Journal of Applied Industrial Engineering (OE Journal) is to publish theoretical and empirical articles that are aimed to contrast and extend existing theories, and build new theories that contribute to advance our understanding of phenomena related with industrial engineering and industrial management in organizations, from the perspectives of Quality Engineering, Productivity Improvement, Logistic & Distribution, Supply Chain Management, Performance Management & Improvement System, Modelling, Operations Management, Optimization, Green Manufacturing.
Arjuna Subject : -
Articles 317 Documents
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Reduce mean time to repair of mining equipment with lean six sigma Hia, Selamat W.; Pramudjito, Prasetyo Adji Dian
Operations Excellence: Journal of Applied Industrial Engineering Vol. 16, No. 3 (2024): OE November 2024
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/oe.2024.v16.i3.125

Abstract

As the size and complexity of mining equipment grow, the impact of equipment failure becomes increasingly critical, often leading to costly downtime and production delays. Mining equipment performance depends on several factors, including equipment reliability, the operating environment, maintenance efficiency, operating processes, and the technical expertise of the personnel. Improving equipment reliability is essential to address these challenges, and one effective approach is to reduce the mean time to repair (MTTR), which significantly affects equipment availability.  This study presents a case study on reducing the MTTR of the starter motor for coal mining equipment using the Lean Six Sigma method. Lean Six Sigma combines the principles of lean manufacturing and Six Sigma to identify inefficiencies and reduce variability. The findings reveal a substantial reduction in MTTR from 110 minutes to 10 minutes. Statistical analysis using a two-sample t-test confirms the significance of the improvement, with the process capability index (cpk) increasing from -2.94 to 6.96. This case study demonstrates the potential of Lean Six Sigma to address critical maintenance challenges, improve operational efficiency, and enhance equipment reliability in the mining sector.
The proposed quality improvement of tofu production at UD. XYZ using DMAIC method Purbantari, Adek Dhea Resmi; Zunaidi, Rizqa Amelia
Operations Excellence: Journal of Applied Industrial Engineering Vol. 16, No. 3 (2024): OE November 2024
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/oe.2024.v16.i3.124

Abstract

Tofu is known as people's food because the price is cheap and easily accessible by all levels of society. Tofu is in great demand. Besides its affordable price, this food is also healthy and can be processed into various dishes. Quality control is essential for a company to minimize the costs caused by product defects. It can help the company if there are irregularities in the production process. With a large number of irregularities in production, the company will experience losses in quality, cost and quantity. This research was conducted to control and improve the quality of tofu at UD. XYZ uses the Six Sigma method through the Define, Measure, Analyze, Improve, and Control stages. Based on the analysis results, the sigma value is 3.4, and the DPMO value is 29,189, indicating that improvement is still needed to reduce defects that arise so that the sigma value can be increased. Based on this research, it is suggested to improve the sigma quality by investing time and money to train new company employees and improve the equipment used in the tofu production process. It is purchasing automated equipment to support better production processes. Research on enhancing the quality of tofu production should be carried out periodically at UD. XYZ, as part of the company's continuous improvement. 
Enhancing process optimization through adaptive jig design in lean manufacturing: insights from Universitas Mercu Buana's laboratory Qulub, Irkham Syifaul; Herlambang, Hendi; Amrina, Uly; Ikatrinasari, Zulfa Fitri
Operations Excellence: Journal of Applied Industrial Engineering Vol. 16, No. 3 (2024): OE November 2024
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/oe.2024.v16.i3.118

Abstract

This study aims to enhance efficiency in the Lean Manufacturing practicum at the Lean Manufacturing Laboratory of Universitas Mercu Buana by applying PDCA (Plan-Do-Check-Act) and TRIZ (Theory of Inventive Problem Solving) methods. The primary focus was the design and implementation of a flexible jig tool to reduce processing time and increase precision in the vacuum, trimming, and assembly stages designing and implementing. Results showed that the flexible jig reduced process time by 37.8%, from 1431 seconds to 890 seconds, and improved the level of automation from fully manual to the use of flexible tools. Further evaluation revealed significant gains in productivity. The study utilized tools such as Value Stream Mapping (VSM), Operation Process Chart (OPC), and the seven waste concepts within the PDCA framework to identify key issues in the manufacturing process. The application of TRIZ principles in tool design also significantly enhanced production efficiency. This research presents compelling evidence that systematic approach like PDCA and creative methodologies for instance TRIZ can substantially improve operational performance in light manufacturing practicums. Additionally, it highlights the important role of higher education in fostering technological innovation and industry collaboration to tackle evolving manufacturing challenges.
Quality improvement of DB-CDP with integration of CRISP-DM and six sigma method Alfiandi, Ahmad; S.D, Triwulandari; Fitriana, Rina
Operations Excellence: Journal of Applied Industrial Engineering Vol. 16, No. 3 (2024): OE November 2024
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/oe.2024.v16.i3.126

Abstract

The DB-Customer Display Product (CDP) is a product that has a high level of defects with the type of attribute that the display light is off. The quality improvement is carried out using the integration of the Cross-Industry Standard Process Data mining (CRISP-DM) method with Six Sigma. The technique using classification technique with the CART algorithm to identify the leading causes of defects in the CDP and association processes using the Frequent Pattern-Growth Algorithm to make association rules between the combination of production support data sets. The results of both algorithms known attributes that cause high rejects are poor solder and solder Short. Implementation of proposed improvements made at the deployment stage, there are work instructions for re-soldering, tip checking forms, and Standard Operating Procedures for solder tip replacement. The result from implementation, was decrease in the value of Defects per unit to 0.0541, where previously it was worth 0.0628, and the value of Defects per million Opportunities decreased from 32.636 to 27.020, and converted into sigma level and obtained sigma value 3.80, before the implementation was at 3.74 sigma. The three indicators of DPU, DPMO, and Sigma level indicate that the proposed quality improvement is successful.
Performance measurement analysis using the performance Prism and objective matrix: a case study of KPUD Tani Wilis Harsys, Benaya; Iriani, Iriani
Operations Excellence: Journal of Applied Industrial Engineering Vol. 16, No. 3 (2024): OE November 2024
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/oe.2024.v16.i3.123

Abstract

Performance is one the critical aspect in every company or business that needs to be considered. However, a common issue encountered is that companies often fail to accurately assess their business performance. Inaccurate performance measurements result in a lack of continuous improvement in productivity and instead negatively impact the overall performance quality, thereby influencing revenue growth. This research focuses on key performance indicators (KPIs) that deviate from the standards set by KPUD 'Tani Wilis'. Consequently, alternative performance measurement approaches, such as identifying indicators using the performance Prism and evaluating performance through the objective matrix, are necessary. The results indicate that 68% of the indicators across various dimensions are in good condition, while 32% are below standard, with the required threshold set at 75% for good performance. The primary challenges identified include maintaining service quality for customers and ensuring supply delivery accuracy. The proposed solutions involve implementing robust control and monitoring systems focused on customer service quality, with dedicated supervisors or quality control experts overseeing the process.
Sigma level choice examination in executing incline Lean Six Sigma (LSS) within the material and item material industry Kurnia, Hibarkah; Wiyatno, Tri Ngudi; Nugroho, Bayu Hari; Nuryono, Arif
Operations Excellence: Journal of Applied Industrial Engineering Vol. 17 No. 1 March 2025
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/oe.2025.v17.i1.134

Abstract

Many manufacturing industries in the world use the Lean Six Sigma (LSS) approach in analyzing and improving waste activities and reducing production defects. The Textile and Product Textile (TPT) industry can also be easily implemented because this industry is a labor-intensive industry. However, in its development, no one has analyzed the sigma level in the TPT industry by reviewing studies. The sigma level obtained from various sources and various types of TPT industries cannot yet be concluded about the sigma level value for each type of industry. This research points to look at writing articles related to LSS, particularly within the TPT industry. This inquire about employments the clustering strategy, specifically a refinement research strategy taken within the TPT industry within the writing review. This ask around found dispersions of 55 articles that were effectively studied inside the composing with the Six Sigma technique being the preeminent broadly utilized and more explore objects based on the tall quality of 41 articles. Gathering by industry section is the piece of clothing industry with 14 articles that reinforce the LSS. In the interim, based on nation groupings, the biggest number is Indonesia with 19 articles. It is trusted that this inquire about commitment can ended up a reference for anybody who will utilize LSS within the fabricating industry.
Selection of the best public fuel filling stations with analytical hierarchy process in Tangerang Regency Sulistyono, Aries Andjar; Astuti, Pudji; Moengin, Parwadi
Operations Excellence: Journal of Applied Industrial Engineering Vol. 17 No. 1 March 2025
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/oe.2025.v17.i1.138

Abstract

Energy is one of the main factors in supporting mobility in activities. Gas Stations (SPBU) are one way that people can get energy. In its operations, gas stations must be able to provide the best service to consumers so that maintaining consumer loyalty. This study aims to be able to choose the best Gas Stations (SPBU) with Analytical Hierarchy Process (AHP) method. The criteria used are based on previous research and based on the results of expert analysis so that the selected criteria are used as a model in decision making, namely management, sales, services, facilities and variations of fuel products. For alternatives to be evaluated are 5 gas stations located in the Legok area, Tangerang, Banten. Based on the calculation of the pairwise criterion comparison matrix in the AHP method, eigenvalues are obtained to perform consistency tests. after processing and analysis, it is known that the highest criterion is service and the lowest is sales. And alternative calculation results obtained that the gas station 5 is the best alternative chosen.
A literature review on the implementation of continuous improvement in the Indonesian manufacturing and service industries Nindiani, Aina; Sulastri, Fitri; Suhara, Ade
Operations Excellence: Journal of Applied Industrial Engineering Vol. 17 No. 1 March 2025
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/oe.2025.v17.i1.127

Abstract

Organizations worldwide, including in Indonesia, must be adaptive by continuously making improvements, or continuous improvements, so that their business continues to run forever. This research aims to analyze the implementation of continuous improvement in Indonesia in the manufacturing and service industry sectors. The literature review was carried out using the keywords implementation of continuous improvement, application of kaizen, and the like in the Google Scholar database. This literature review intends to determine how the continuous improvement (CI) process is carried out in Indonesia and what results are achieved. CI implementation is carried out using various tools that improve the work system. The objective value of implementing continuous improvement is then synthesized in manufacturing and service industry studies. In the manufacturing industry, the objective values that can be drawn based on the study's results are increasing production efficiency, optimizing product quality, reducing production costs, increasing time-to-market speed, a culture of innovation, increasing employee involvement, and sustainability and competitiveness. Meanwhile, in the service industry, it is improving service quality, operational efficiency, service innovation, quality management system effectiveness, and competitive advantage.
Examining the key factors influencing the sustainability of domestic wastewater reuse in Jakarta using AHP method Theresia, Eliza Sinta; Purwana, Rachmadhi; Rahmatika, Iftita
Operations Excellence: Journal of Applied Industrial Engineering Vol. 17 No. 1 March 2025
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/oe.2025.v17.i1.133

Abstract

Population expansion, urbanization, economic development, pollution, and climate change are all contributing factors to the growing global problem of water shortage. The Sustainable Development Goals (SDGs) are in danger of being achieved because of this dilemma, particularly SDGs 6 and 11 on clean water and sanitation and sustainable cities, respectively. Only 65.9% of Jakarta's population has access to potable water, and water stress levels range from 40 to 80%. The government is planning a wastewater treatment system (SPALD-T) to recycle household wastewater and produce clean water in order to address this issue. TB. Simatupang's Water Treatment Plant (WWTP) still faces obstacles in adopting wastewater reuse, nonetheless.  In Indonesia, wastewater recycling has received little attention, with the majority of studies concentrating on technical concerns rather than sustainability considerations. In contrast, technologies such as desalination and rainfall harvesting are being investigated worldwide. The objective of this research is to examine the technical and non-technical elements that affect wastewater recycling's effectiveness for the generation of sustainable clean water. The results will offer crucial information to help Perumda Paljaya create policies that will effectively utilize wastewater, which will help Jakarta accomplish its sustainable development goals more broadly.
Strategic marketing analysis for enhancing competitiveness and customer satisfaction: a case study of Indihome TV in Pasuruan City Hilmi, Muhammad Hafidh Syauqil; Zunaidi, Rizqa Amelia; Wulandari, Eka Devi
Operations Excellence: Journal of Applied Industrial Engineering Vol. 17 No. 1 March 2025
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/oe.2025.v17.i1.130

Abstract

This study aims to develop effective marketing strategies for Indihome TV to enhance its competitiveness and customer satisfaction in Pasuruan City. Utilizing a comprehensive approach, the research integrates tools such as the Internal Factor Evaluation (IFE) Matrix, External Factor Evaluation (EFE) Matrix, SWOT analysis, Boston Consulting Group (BCG) Matrix, and Quantitative Strategic Planning Matrix (QSPM). Eleven alternative strategies were identified, of which five were prioritized: conducting targeted marketing campaigns emphasizing ease of access to entertainment, increasing the frequency of discounts, offering economical subscription packages, providing flexible channel selection options, and rewarding loyal customers.The results highlight the significance of addressing customer concerns, particularly pricing and convenience, to improve brand recognition and attract a wider audience. Key strategies such as promoting tailored packages and enhancing customer loyalty through discounts and bonuses are designed to align Indihome TV’s offerings with customer needs. The Pareto Chart analysis confirmed that these top five strategies account for over 50% of the company’s potential improvement in marketing outcomes.These findings provide a strategic roadmap for Indihome TV to strengthen its market position, improve customer retention, and achieve sustainable growth. This research emphasizes the importance of aligning marketing strategies with internal strengths and external opportunities to address competitive pressures effectively.

Page 30 of 32 | Total Record : 317

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