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INDONESIA
Journal of Engineering and Management in Industrial System
Published by Universitas Brawijaya
ISSN : 23383925     EISSN : 24776025     DOI : -
Core Subject : Engineering,
Industrial & Manufacturing Engineering
Journal of Engineering and Management in Industrial System is a peer reviewed journal. The journal publishes original papers at the forefront of industrial and system engineering research, covering theoretical modeling, inventory, logistics, optimizations methods, artificial intelligence, bioscience industry and their applications, etc.
Arjuna Subject : -
Articles 7 Documents
 1 
Search results for , issue "Vol 12, No 1 (2024)" : 7 Documents clear
OPTIMIZATION OF FLEET UTILIZATION AND WAITING TIME IN SUPPLY CHAIN AGENT-BASED SIMULATION USING REINFORCEMENT LEARNING Tama, Ishardita Pambudi; Sujarwo, Sujarwo; Hardiningtyas, Dewi; Nugroho, Willy Satrio
JEMIS (Journal of Engineering & Management in Industrial System) Vol 12, No 1 (2024)
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

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Abstract

Inventory to transport transition was a critical operation that requires high efficiency in manufacturing. This study models the inventory transition of manufacturing plants in a supply chain network. The objective was to configure the minimum fleet utilization with fastest waiting time.  The configuration was performed using reinforcement learning assisted agent-based model (ABM) simulation. The ABM with fleet speed control have the best performance with average waiting time of 5.84 hours with lowest fleet utilization which surpasses other models. Lower fleet and waiting time provide rest periods for the driver. Therefore, performing speed control during transport improves human factor of the supply chain operation.
A STUDY OF RESEARCH PAPER-BASED QUESTIONNAIRE DESIGN METHODS USING CO-OCCURRENCE NETWORKS Fujiyama, Kojiro; Masuda, Koji; Oktavianty, Oke; Haruyama, Shigeyuki
JEMIS (Journal of Engineering & Management in Industrial System) Vol 12, No 1 (2024)
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

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Abstract

The creation of questionnaire forms based on research papers has been done for various purposes. In previous studies, the surveyor intentionally created questions to be used in questionnaires based on secondary research and the knowledge of the researcher, and it is unclear what procedure was used to create the questions. Therefore, in this study, we examined and discussed methods of mechanically creating questions based on a review of research papers. As a result, we proposed a new method to create questions by mechanically combining words obtained from the article search, text mining of extracted articles, and co-occurrence word search. 
AN ANALYSIS : RELATIONSHIP BETWEEN WORKLOAD AND MENTAL HEALTH ON HEATHCARE WORKERS Salsabila, Zulfi Fathiya; Dharmastiti, Rini
JEMIS (Journal of Engineering & Management in Industrial System) Vol 12, No 1 (2024)
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

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Abstract

Mental health is an important part in addition to physical health. Mental health problems are also faced by health workers due to the relatively high burden in their work. Based on the targets of the Sustainable Development Goals (SDGs), mental health is one of the areas of health and well-being. On the other hand, excessive workload is a source of fatigue, which is the root of burnout. The purpose of this study is to analyze the relationship between workload and mental health of health workers in a hospital. This study used a non-experimental method, namely cross sectional. Data were obtained from 49 respondents through a survey using an online questionnaire distributed by convenience sampling method. Respondents consisted of doctors (specialist and general), nurses, midwives, and pharmaceutical technical personnel. The workload questionnaire was adopted from the NASA-TLX, while mental health used the MBI-TBI. Relationship analysis was conducted using PLS-SEM using SmartPLS 4.0. The workload results obtained from this study were 65.87 or in the high category, with an allocation of very high workload of 27%, high as much as 53%, somewhat high 18%, and medium 2% of the total respondents. Factors related to mental load, physical load, and effort are the most dominant factors. The results for mental health obtained that emotional exhaustion in health workers is in the medium category (51%), personal achievement in the high category (80%), and for depersonalization in the high category (57%). The results of the correlation test between workload and the three factors on mental health found that workload has a significant relationship with the factors of emotional exhaustion and depersonalization (cynicism) with a probability of both <0.005, namely 0.000 and 0.001. The results of this study indicate that workload in health workers affects mental health, namely emotional exhaustion by 0.457 and depersonalization by 0.397. Thus, in order to maintain the mental health of health workers, intervention recommendations need to be made according to the results of this study.workload; mental health; healthcare workers, NASA-TLX; PLS-SEM
TAGUCHI EXPERIMENTAL DESIGN FOR ROASTING PARAMETER TO IMPROVE COFFEE POWDER QUALITY Putro, Wisnu Wijayanto; Oktavianty, Oke; Novareza, Oyong; Swara, Suluh Elman; Rachmansyah, Ihram
JEMIS (Journal of Engineering & Management in Industrial System) Vol 12, No 1 (2024)
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

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Abstract

Quality improvement is important to reach customer satisfaction and gain the competitive advantage. This research was using the Taguchi experiment design to obtain a combination of roasting parameters, which could in turn improve the quality of coffee powder. During the roasting process, the acids that were naturally contained in coffee beans were transformed into acetic acid, malic acid, citric acid, and phosphoric acid, which in turn contributed to the coffee’s actual taste. Several key factors contributed to the taste of coffee powders, namely roasting temperature, roasting time, the weight per roasting, and cooling time. The significance factor to improve quality of Robusta coffee powder namely roasting temperature on 185 °C, roasting time in 20 minutes, weight per roasting is 7.5 kilograms and cooling time is 10 minutes. The organoleptic tests of the resulting coffee powders showed an average of 4.93 with regards to consumer rating. The experiment result revealed the optimal setting level that should be applied in the production process of coffee powders for gaining better quality and thus more favourable to consumers.
OPTIMIZING EVACUATION ROUTES IN INDONESIAN URBAN SETTINGS WITH RESIDENTIAL AND SMALL INDUSTRIAL ZONES USING PATHFINDER SIMULATION Hardiningtyas, Dewi; Tama, Ishardita Pambudi; Sholihah, Qomariyatus
JEMIS (Journal of Engineering & Management in Industrial System) Vol 12, No 1 (2024)
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

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Abstract

The rapid urbanization in Indonesia has resulted in increased complexity within its urban settings, particularly in areas combining residential and small industrial zones. Effective evacuation planning is crucial to ensure the safety of inhabitants during emergencies. This study explores the optimization of evacuation routes in such mixed-use urban areas using Pathfinder simulation software. Two scenarios were examined: one with two assembly points and another with three assembly points. The simulations were conducted in a densely populated area in Malang City, Indonesia known for its combination of residential and small industrial units. The results indicate that the scenario with three assembly points significantly enhances evacuation efficiency compared to the two-assembly point scenario. Specifically, the three-assembly point configuration reduced overall evacuation times and minimized congestion at critical junctures, allowing for smoother and faster evacuation flows. The findings underscore the importance of strategically placing assembly points to improve the distribution of evacuees and reduce potential bottlenecks. This study contributes to the body of knowledge on urban evacuation planning in mixed-use settings and provides practical insights for urban planners and emergency management authorities in Indonesia. The use of advanced simulation tools like Pathfinder offers a valuable approach to optimize evacuation strategies, ensuring better preparedness and response in the face of urban emergencies.
KANSEI ENGINEERING AND EYE TRACKING IN TEA PACKAGING DESIGN FOR ENHANCING CONSUMER APPEAL Cahyawati, Amanda Nur; Fathimahhayati, Lina Dianati; Tontowi, Alva Edy
JEMIS (Journal of Engineering & Management in Industrial System) Vol 12, No 1 (2024)
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

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Abstract

This research aims to determine the design specifications for tea drink packaging that appeal to consumers using Kansei and eye-tracking techniques. Kansei Engineering focuses on developing products that align with consumers' feelings and emotional needs. Eye-tracking provides insights into how consumers see and interact with packaging, as evidenced by total fixation duration, allowing for the identification of design elements that attract the most attention and influence consumer perception. The application of eye-tracking and Kansei Engineering helps match customer perceptions of products with their functional and technical specifications, providing a holistic and effective approach to increasing sales and consumer satisfaction. Integrating these two methods makes the design process more consumer-focused, combining emotional and visual appeal, thereby increasing attractiveness and potential consumption. The urgency of this research lies in its potential to revitalize the tea industry in Indonesia by utilizing innovative packaging designs. Enhancing consumer appeal to tea products through the integration of Kansei Engineering and eye-tracking, which are visually and emotionally engaging, addresses the main obstacle to low tea consumption in Indonesia. Thus, it contributes to the growth of the tea market and promotes healthier beverage choices among Indonesian consumers. The research results show that an aesthetic packaging design requires a sports cap type lid, a convex bottle body, a plain motif, and a square cross-section. Ergonomic packaging design requires a flip cap type lid, a wave-shaped bottle body, a textured motif, and a round cross-section. Simple packaging design requires a straw cap type lid, a serrated bottle body, a plain motif, and a square cross-section. This research aims to revitalize Indonesia's tea industry through consumer-oriented packaging design, increasing emotional and visual appeal. Key implications include increased consumer appeal, potential for increased consumption, better marketing strategies, and packaging design innovation that resonates emotionally with consumers.
A MODIFICATION OF TIBREWALA, PHILIPPE, AND BROWNE'S ALGORITHM FOR MULTI-SHIFT MANUFACTURING WORKERS SCHEDULING Wahyudi, Adhie Tri; Zendrato, Rosleini Ria Putri; Indrasari, Anita; Suparti, Erni; Prayuda, Fendi; Cahyawati, Amanda Nur
JEMIS (Journal of Engineering & Management in Industrial System) Vol 12, No 1 (2024)
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

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Abstract

The SME under study, which specializes in hard wooden and leather furniture for foreign markets, encountered difficulties in integrating their make-to-order production system with tight shipping export deadlines. This necessitated a systematic worker scheduling technique in order to satisfy production targets and reduce labor expenditures. The aim of this research was to design a worker scheduling system to ensure that the production makespan corresponded to the available time limitations. The study found that the Tibrewala, Philippe, and Browne algorithm for multi-shift workers scheduling significantly reduced labor costs while ensuring order fulfillment within predefined constraints, emphasizing the need for additional research that includes all production cost variables for more comprehensive cost savings.

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