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Jurnal Optimasi Sistem Industri
Published by Universitas Andalas
ISSN : 20884842     EISSN : 24428795     DOI : -
Core Subject : Science, Engineering,
Control & Systems Engineering Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering Mechanical Engineering
Jurnal Optimasi Sistem Industri (JOSI) is a peer-reviewed journal that is published periodically (April and October) by the Department of Industrial Engineering, Faculty of Engineering, Universitas Andalas, Padang.
Arjuna Subject : -
Articles 394 Documents
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A Fuzzy Multi-Criteria Approach for Selecting Open-Source ERP Systems in SMEs Using Fuzzy AHP and TOPSIS Dana Marsetiya Utama; Muhammad Faisal Ibrahim; Ahmed Nedal Abid Al Kareem Jabari
Jurnal Optimasi Sistem Industri Vol. 23 No. 2 (2024): Published in January 2025 (published late, please read our note)
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v23.n2.p167-187.2024

Abstract

In a rapidly growing and competitive business era, selecting an open-source Enterprise Resource Planning (ERP) system is a critical step to support the efficiency and effectiveness of company operations. This research aims to propose an innovative methodology by integrating the fuzzy Analytical Hierarchy Process (fuzzy AHP) and fuzzy Technique for Order Preference by Similarity to the Ideal Solution (fuzzy TOPSIS) to improve the open-source ERP selection process. The method involves eight criteria and 26 sub-criteria to comprehensively evaluate 11 open-source ERP alternatives, specifically for SMEs in the transportation services sector in Indonesia. System quality has been identified as a critical factor in the selection of an open-source ERP system, with particular emphasis on aspects such as security and reliability. These sub-criteria are considered the most influential in determining the suitability of a system. The analysis further indicates that the 10th ERP alternative as the best choice, consistently outperforming others in meeting the defined criteria. Additionally, sensitivity analysis confirmed the robustness of this choice, demonstrating its stability and effectiveness despite changes in criteria weights. Beyond its practical implications for SMEs, this research contributes a versatile evaluation framework that can be adapted to other industries seeking effective ERP solutions. The findings emphasize the importance of structured decision-making in technology adoption, offering comprehensive and reliable guidance for organizations aiming to optimize their operations through open-source ERP systems. This study not only bridges a critical gap in ERP selection for SMEs but also establishes a methodological foundation for future research and applications across diverse industry sectors.
Towards Safer Workplace: A Survey-Based Study on Developing a Safety Climate Model for the Indonesian Paper Industry Nana Rahdiana; Bambang Suhardi; Retno Wulan Damayanti; Novie Susanto; Jafri Mohd Rohani
Jurnal Optimasi Sistem Industri Vol. 23 No. 2 (2024): Published in January 2025 (published late, please read our note)
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v23.n2.p130-148.2024

Abstract

A reliable safety climate model is essential for evaluating safety behavior and predicting risks such as accidents or injuries, yet no research has specifically addressed the safety climate in the paper industry, either globally or in Indonesia. Recognized as high-risk due to its reliance on large machinery and hazardous chemicals, the paper industry has been understudied in this context. This research addresses the gap by developing a safety climate model tailored to the Indonesian paper industry, following a rigorous methodology that included a literature review, model design, validation processes, and Goodness-of-Fit testing. The study identified nine dimensions and 36 initial indicators, with strong content validity confirmed through Aiken’s V index, and refined through a survey of 313 employees—including managers, supervisors, and operators—at a paper factory in West Java, Indonesia. Confirmatory factor analysis (CFA) led to the final model, comprising nine dimensions and 32 validated indicators, achieving excellent fit across key criteria. These dimensions include management commitment, safety environment, safety communication, safety involvement, safety rules and procedures, safety training, safety competence, work pressure, and local wisdom. The validated model offers valuable insights into safety practices, providing a practical framework for improving safety performance in the Indonesian paper industry. By fostering a proactive safety culture and addressing sector-specific risks, this model has the potential to significantly reduce workplace accidents and improve overall safety performance, marking an important advancement in industry-specific safety research.
Analisis Postur Kerja Aktivitas Pengangkatan Karung di PT. Indofood CBP Sukses Makmur Tbk. Cabang Makassar Arminas Arminas
Jurnal Optimasi Sistem Industri Vol. 16 No. 1 (2017): Published in May 2017
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v16.n1.p58-67.2017

Abstract

PT. Indofood CBP Sukses Makmur Tbk is a company that works in the field of food processing industry which produces instant noodles, Indomie. At this company, human resource management gives a significant effect on the production sustainability and development. The observation that conducted in PT. Indofood CBP indicates that loading and delivering process are still using the manual procedure which uses human power with loading capacity around 25 kg. The observation focus on two working movement elements used by the screw machine workers consists of bending over when lifting and pouring the wheat flour sack resulted in worker’s frequent complaints related to the waist and backbone problems. The objective of this research is to discover the risk arising from lifting and delivering techniques used by the screw machine workers in PT. Indofood Sukses Makmur Tbk., then analyze the worker’s workload based on the observation result. Rapid Entire Body Assessment (REBA) method was used to analyze the data and it is concluded that lifting and pouring procedures used by the screw machinery workers in PT. Indofood CBP have a high risk of injury since the REBA scores of both activities is 5 or on the third level. This score means that immediate improvement on the working system is needed.
Keandalan Sistem Lintasan Produksi Pembuatan Pipa Taufik Taufik; Wirli Hidayanti
Jurnal Optimasi Sistem Industri Vol. 15 No. 2 (2016): Published in November 2016
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v15.n2.p143-154.2016

Abstract

Production process of power pole involves connected production process flow between machines. Thus, the company must ensure the machine availability during production runs. PT Kunango Jantan as a company that produces pole power also considers machine availability. The level of machine availability can be seen from the high level of machine reliability. However, the company is still not been able to guarantee the availability of the machine so it is necessary to study the reliability of the system to help to take the right policy in handling pipe production machinery maintenance. The first step is to determine the distribution of machine damage. Minitab 16 software was used determine the type of distribution and distribution parameters of each machine damage. In addition, mean time between failure (MTBF) was calculated to the pipe manufacturing machine. The machine reliability was obtained based on a formula and parameters. The determination of the system reliability was derived from the block diagram in accordance with the condition of machines in the field. The analysis was performed using fishbone diagram to propose an attempt to increase the machine reliability. The results of this study indicate that the machine reliability in good level since the reliability value is between 0.901 to 1.000. The machine reliability in a series circuit is smaller than the machine reliability in a parallel circuit. Rs and R values of the system were 0.980 and 0.998. R system shows that the system has a good performance with a chance of machine damage during production <0.002 (0.2%).
Penyusunan Kriteria Rumah Tinggal Berkonsep Ergo-Ekologi dalam Upaya Peningkatan Kenyamanan Termal Penghuni Lusi Susanti; Sri Zetli
Jurnal Optimasi Sistem Industri Vol. 15 No. 2 (2016): Published in November 2016
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v15.n2.p155-170.2016

Abstract

Nowadays, developers of residential houses often neglect to pay attention about the air circulation as one of the factors that affects thermal comfort zones inside the room environment. In general, people overcome the thermal discomfort using mechanical ventilation such as a fan or Air Conditioning (AC).This study measured the comfort zone of 32 row houses in the Batam city with two types of floor area (LT ≤ 36 m2 and LT > 36 m2). Other variables include Ceiling Height (Tpi), Aperture Area (Vi), Wall Materials (Bhi) and Orientation (Ori) were also considered in this measurement. The results show that thermal comfort zone was influenced by the wall material (Bh1) made from brick, aperture area (V2) > 20% of the floor area, and ceiling height (Tp2) > 3 m. While the house orientation variable can still be received by utilizing the architecture techniques to reduce direct solar radiation. This study also formulated three models of row house design with ergo-ecological concept, which are Ree = f {Lti, Bh, V, Tp2, Ori} atau Ree = f {Lt2, Bh, V, Tp1, Or2} atau Ree = f {Lt1, Bh, V, Tp1, Or1}.
Aplikasi Algoritma Hybrid dalam Penentuan Rute Pendistribusian Produk (Studi Kasus: PT. Enseval Putera Megatrading) Eri Wirdianto; Dhina Regenie; Wisnel
Jurnal Optimasi Sistem Industri Vol. 15 No. 2 (2016): Published in November 2016
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v15.n2.p171-180.2016

Abstract

PT. Enseval Putera Megatrading is a company which operates in general business and distribution of pharmacy products, general needs, cosmetics, foods and hospital equipment. In their current practice, routing in products deliveries, which is limited by time windows, has not considered the utilization of vehicles' maximum loading capacities. Distribution route from a hybrid algorithm using heuristic clustering and Mixed-Integer Linear Programming approach can accommodate such problem with time windows and vehicles' capacities utilization. Based on the comparison between company’s current route and the route from the hybrid algorithm, it can be seen that the hybrid algorithm is able to decrease total distance and total cost of transportation. This new route concerns on vehicles allocation and time windows limit. This new route can minimize the total cost of transportation that company has to pay.
Evaluasi Kualitas Layanan Nasabah dengan Metode Kano, Analisis Kuadran dan Triz Studi Kasus: Bank Nagari Cabang Pembantu Universitas Bung Hatta Padang Dewi Oktaviani; Hilma Raimona Zadry
Jurnal Optimasi Sistem Industri Vol. 15 No. 2 (2016): Published in November 2016
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v15.n2.p181-202.2016

Abstract

The banking industry is one of the pulse of Indonesian economic system. Bank Nagari is an industry aims to support the community’s economic development in West Sumatra. These objectives can be realized if Bank Nagari is able to face the existing challenges and problems. However, based on the preliminary studies, it was found a weakness in the bank services, such as the irreverent attitude of the tellers to the customers and long queues at certain times. Therefore, there is a need for a solution and quick actions so that Bank Nagari can improve customer satisfaction and provide excellent service to the communities. This study was conducted at Bank Nagari branch Bung Hatta University, Padang. Data is collected using questionnaire. The questionnaires were distributed to 97 respondents consisted of 24 variables and analyzed using the Kano method, quadrant analysis, and Theory of Inventive Problem Solving (TRIZ). The study proposed improvements to Bank Nagari branch Bung Hatta University, Padang. It is proposed to install a bulletin board or poster containing bank service procedures and information about bank services, to provide training to the bank employees, to focus on the frequent bank service problems and the evolution of the bank service system from traditional services to phone banking or internet banking.
Algoritma Penentuan Ukuran Batch Integer pada Penjadwalan Flowshop Satu Mesin Hadigufri Triha; Ahmad Syafruddin Indrapriyatna; Jonrinaldi; Berry Yuliandra
Jurnal Optimasi Sistem Industri Vol. 15 No. 1 (2016): Published in March 2016
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v15.n1.p1-15.2016

Abstract

Scheduling is an important area of production planning and control. Scheduling is required to produce an existing job by allocating existing resources in the proper execution order. Production schedules arranged effectively and efficiently to maximize resources utility, minimize waiting and idle time and increase productivity. The flowshop batch scheduling model for one machine that takes inventory and quality cost into account has been developed by Indrapriyatna et al (2007a). However, the model yet effective in converting the results of batch size into integers. This study tried to resolve this problem by using a modification of Branch and Bound Algorithm approach.
Penjadwalan Cement Mill Berbasis Minimasi Faktor Klinker dalam Proses Pembilasan dan Impor Klinker Nilda Tri Putri; Indah Kurnia Ramadhani
Jurnal Optimasi Sistem Industri Vol. 15 No. 1 (2016): Published in March 2016
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v15.n1.p62-77.2016

Abstract

PT Semen Padang is one of the cement companies in Indonesia. Cement production influenced by the number of demand, raw materials and the number of the available machine. The number of demand increases with a corporate capacity which keeps the company had to set an optimal production schedule. Scheduling production should be followed by the availability of raw materials (clinker). The number of clinkers required influenced by the number of demands and clinker elapsed to the flushing process. Flushing process happens if the transition products produced from Non-OPC to a product OPC, for one flushing process causes clinker consumption 7% more than the existing capacity decreases. Deficient in a capacity covered by importing clinker which causes high-cost production. So, it necessary to make cement mill schedule by minimizing flushing process, so clinker that will be used become optimized. Steps that will be done in this study began with the survey system, identify problems, and data collection. Data collected are machine cement mill and kiln capacity, demands, and flushing process. Then designed a formulation model that minimizes clinker factor and the number of clinker imports needed, so that obtained scheduling machine cement mill to produce OPC and Non-OPC. Results obtained by reducing the number of flushing process because the cement mill designed to produce one type of product per day, so the flushing process could happen if there is transition cement production Non-OPC on the day-i to cement OPC on the day i+1. Cement OPC produced by Indarung II, III, and V. Indarung IV only produced cement Non-OPC, so the flushing process happened in Indarung II, III, and V.
Pengembangan Model Economic Production Quantity (EPQ) dengan Sinkronisasi Demand Kontinu dan Diskrit Secara Simultan Nurike Oktavia; Henmaidi; Jonrinaldi
Jurnal Optimasi Sistem Industri Vol. 15 No. 1 (2016): Published in March 2016
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v15.n1.p78-86.2016

Abstract

The most popular inventory model to determine production lot size is Economic Production Quantity (EPQ). It shows enterprise how to minimize total production cost by reducing inventory cost. But, three main parameters in EPQ which are demand, machine set up cost, and holding cost, are not suitable to solve issues nowadays. When an enterprise has two types of demand, continue and discrete demand, the basic EPQ would be no longer useful. Demand continues comes from a customer who wants their needs to be fulfilled every time per unit time, while the fulfillment of demand discrete is at a fixed interval of time. A literature review is done by writers to observe other formulation of EPQ model. As there is no other research can be found which adopt this topic, this study tries to develop EPQ model considering two types of demand simultaneously.

Page 30 of 40 | Total Record : 394

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