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Jurnal Optimasi Sistem Industri

JOSI
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Published by Universitas Andalas

ISSN : 20884842 EISSN : 24428795 DOI : -

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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Cover & Preface JOSI Vol. 19(1) 2020 Hilma Raimona Zadry
Jurnal Optimasi Sistem Industri Vol. 19 No. 1 (2020): Published in June 2020
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Adoption Intention Model of Electric Vehicle in Indonesia Martha Widhi Dela Utami; Yuniaristanto Yuniaristanto; Wahyudi Sutopo
Jurnal Optimasi Sistem Industri Vol. 19 No. 1 (2020): Published in June 2020
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Indonesia’s government was targeting the adoption of 2.1 million units of two-wheeled electric vehicles and 2,200 units of four-wheeled electric vehicles in 2025 through the Republic of Indonesia's Presidential Regulation No. 22 in 2017 about the National Energy General Plan. In 2019, the Government of Indonesia issued Presidential Regulation No. 55 in 2019 concerning the Acceleration of the Battery Electric Vehicle Program for Road Transportation. In 2018, the adoption of two-wheeled electric vehicles only reached 0.14% of the government's target for 2025. Therefore, the adoption of Electric Motorcycle (EM) technology must also consider many factors to be successful. This research develops a non-behavioral electric vehicle adoption intention model. The factors include sociodemographic, financial, technological, and macro-level. The online survey involved 1,223 respondents. Logistic regression is used to obtain the function and probability value of intention to adopt EM in Indonesia. Frequency of sharing on social media, level of environmental awareness, purchase prices, maintenance costs, maximum speed, battery charging time, availability of charging station infrastructure at work, availability of home power based- charging infrastructure, purchase incentive policies, and charging cost discount incentive policies are significantly influencing the intention to adopt electric vehicles. It also shows that the opportunity for Indonesians to adopt electric motorcycles reaches 82.90%. The realization of the adoption of electric motorcycles in Indonesia requires infrastructure readiness and costs that can be accepted by consumers. Lastly, the results of this research provide some suggestions for the government and businesses to accelerate electric motorcycle adoption in Indonesia.

Designing Persuasive Application to Promote Public Transportation Use Thedy Yogasara; Vania Edra Christabel Naomi
Jurnal Optimasi Sistem Industri Vol. 20 No. 1 (2021): Published in May 2021
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

The poor air quality of Jakarta, caused among others by fossil fuel combustion for transportation, harmfully affects the health of its people. Carbon emissions resulting from transportation activities can be reduced by getting people to use public transportation more frequently. This research aims at designing a persuasive application to encourage people to use public transportation more often. The steps of interaction design were employed. Firstly, user needs were identified using interviews, resulting in 48 interpreted needs which were then grouped into nine primary needs. Secondly, a design workshop involving users and designers was conducted to produce three concept alternatives. In the next stage, the best concept was selected using the concept scoring method and was subsequently refined through the SCAMPER method. A high-fidelity prototype was developed based on the final concept. Lastly, the evaluation process of the application prototype named ecoGlide consisted of two major parts, i.e. the evaluation of performance and persuasive qualities. The performance evaluation was conducted through Usability Testing using five criteria. The effectiveness and efficiency criteria consecutively score 91% and 71.43%, exceeding the minimum acceptable value of 70%. Furthermore, the satisfaction, usefulness, and learnability criteria respectively score 3.83, 3.88, and 3.88, which surpass the threshold value of 3.4. The persuasive quality was evaluated using the qualitative method through a coding scheme. The result shows that the Emotion and Persuasion categories were most closely related to the application use. The most influential sub-category of the persuasion aspect is Reward Driven, which ranks 4th out of 14 sub-categories. Overall, the ecoGlide application was considered to have good usability and persuasive ability.

Supply Chain Performance Measurement Framework for Construction Materials: Micro Meso Macro Moh Nur Sholeh; Mochamad Agung Wibowo; Naniek Utami Handayani
Jurnal Optimasi Sistem Industri Vol. 19 No. 2 (2020): Published in November 2020
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Productivity is a challenge in the construction industry, commonly initiated by fragmentation. In addition, some work levels have been identified, including the micro, meso, and macro. However, the construction supply chain is one of the possible solutions adopted to increase productivity. The purpose of this study, therefore, is to develop a framework for measuring supply chain construction performance at the micro, meso, and macro levels. These respective stages are tiered from the bottom to the top level as a supply chain management concept. Furthermore, a design for the supply chain performance measurement framework is created, followed by formulation with KPI, and the consequent application in the project. Therefore, performance is evaluated based on the construction materials, as a large resource. The results identified the supply chain performance at the micro-level as the basis for possible measures between contractor and supplier, using the SCOR. However, the emphasis was made on the strength of construction companies with large suppliers at the meso level. Meanwhile, the macro-level includes the accumulation of related measurements from micro as well as meso, and are consequently used to define the relationship between construction actors at the national level.

Evaluasi Produk Gendongan Bayi Menggunakan Metode Kansei Engineering Anandari Ramadhiar Priyandini; Ari Widyanti
Jurnal Optimasi Sistem Industri Vol. 19 No. 1 (2020): Published in June 2020
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

There are a lot of baby carrier types commonly found in Indonesia. Aside from the massively produced baby carriers with modern shapes and features, the traditional ‘kain jarik’ baby carriers are still an option to mothers in Indonesia. The research was conducted to evaluate the subjective perception of the consumers in choosing to use a baby carrier. An evaluation was done to see the factors that influence consumers to choose a certain product and their correlations to the products’ designs. Kansei engineering is used as a method to identify the emotional perception of a consumer to a baby carrier by means of a questionnaire involving 525 respondents. The identification process results in several Kansei words that were grouped and used as a stimulus to the questionnaires meant to evaluate 4 samples of baby carriers commonly used in Indonesia. The result showed that there are 3 main factors that encouraged consumers to pick a baby carrier, which are comfort, design, and material. Based on those 3 factors, consumers gave their highest scores to a kangaroo or wrap baby carriers.

Cover & Preface JOSI Vol. 19(2) 2020 Hilma Zadry
Jurnal Optimasi Sistem Industri Vol. 19 No. 2 (2020): Published in November 2020
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (453.454 KB)

Studi Eksplorasi Faktor yang Mempengaruhi Keberlanjutan Pemakaian Layanan Mobile Payment Alfian Tan; Paulina Kus Ariningsih; Cherish Rikardo
Jurnal Optimasi Sistem Industri Vol. 19 No. 1 (2020): Published in June 2020
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

This research explores some potential factors that affect the continuance intention of a mobile payment service. The trend of mobile payment services has been increasing since the last few years. The advancing technology of the internet and smartphone has been a supporting environment for the growth of this method. Many similar mobile payment services are offered in the community which results in a highly competitive business condition. The business owner who has put a high investment in this business will surely want to keep it running and even grow their product. Therefore, some knowledge of factors that can significantly promote the sustained use of their product to customers will be imperative. In this research, some existing models on the general repurchase intention concept and users’ continuance intention will be combined and tested to figure out some influential aspects to continuance intention concept. Seven factors are hypothesized to have direct and indirect effects. Data from 193 respondents are gathered and the results of the tested model shows perceived quality, perceived value, and brand preference subsequently influence the continuance intention. Further analysis is also conducted in this research to explain the relationship between factors as well as analysis of current mobile payment providers.

Supporting Factors for Community Participation in the Waste Bank Program: A Study in Sleman Regency of Indonesia Reni Dwi Astuti; Utaminingsih Linarti; Dicky Matura Sa'ban
Jurnal Optimasi Sistem Industri Vol. 20 No. 1 (2021): Published in May 2021
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

The waste bank is one of the methods used by the Government of Sleman Regency, DIY, to solve the waste problem. However, citizen participation to be active as customers in the waste bank is still lacking. For this reason, a study was conducted to find out what factors affect the level of activity of citizens in depositing waste into the waste bank. The research uses The Theory of Planned Behavior, coupled with factors: knowledge of how and what and knowledge of consequences. Data was collected through interviews with several bank administrators and customers and filling out the questionnaire. Respondents were selected by purposive sampling from 11 waste banks. The analysis method uses multiple linear regression by testing the significance of the regression model, the coefficient of determination, and the partial effect test of each variable. The results showed that attitudes, subjective norms, contr, knowledge of how and what, and knowledge of consequences simultaneously affected 73% of the intention. Among the five independent variables, only the perceived behavioral control has no partial effect. The study also showed that the intention had a significant effect on the waste bank's active behavior with a coefficient of determination of 63%.

Sequential Routing-Loading Algorithm for Optimizing One-Door Container Closed-Loop Logistics Operations Paulina Kus Ariningsih; Titi Iswari; Kevin Djoenneady Poetra; Yoon Mac Kinley Aritonang
Jurnal Optimasi Sistem Industri Vol. 19 No. 2 (2020): Published in November 2020
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

One-door container type of vehicle is the main tool for urban logistics in Indonesia which may take the form of truck, car, or motorcycle container. The operations would be more effective when it is performed through pickup-delivery or forward-reverse at a time. However, there is difficulty to optimize the operation of routing and container loading processes in such a system. This article is proposing an improvement for algorithm for sequential routing- loading process which had been tested in the small datasets but not yet tested in the case of big data set and vehicle routing problem with time windows. The improvement algorithm is tested in big data set with the input of the vehicle routing problem with time windows (VRP-TW) using the solution optimization of the Simulated Annealing process with restart point procedure (SA-R) for the routing optimization and Genetic Algorithm (GA) to optimize the container loading algorithm. The large data sets are hypothetical generated data for 800-2500 single-sized products, 4 types of container capacity, and 100-400 consumer spots. As result, the performance of the proposed algorithm in terms of cost is influenced by the number of spots to be visited by the vehicle and the vehicle capacity. Limitations and further analysis are also described in this article.

Analisis Sistem Rantai Pasok Pt. Semen Gresik (Persero) Tbk Bahrain Boru Sinaga; Gema Alif Utama; Hesti Rafianti; Kushisa Atta Jaeba; Wiwit Afrigus
Jurnal Optimasi Sistem Industri Vol. 10 No. 1 (2011): Published in April 2011
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

The cement industry is an industry that requires a supply chain system is structured and well organized, it is influenced by several things, namely the level of demand for raw materials (raw material), resources, production processes, scheduling, transportation, supplier, allocation, distributors, retailers, product until they reach the consumer. This paper discusses the supply chain system on PT. Semen Gresik ranging from an overview of the company, Aggregate planning, process and production scheduling and logistics of PT Semen Gresik and supply chain management to pursue the relationship and coordination between the processes of other firms in the business pipelines, ranging from suppliers to give priority to current customers as well goods between the company, since most upstream to most downstream. The decision to determine the transportation used to distribute the products is very important. Selection of transport strategy used to obtain the type of transport that provides a fast time in the distribution is done by comparing the transport strategy transport using trucks and trains. Stages of the bidding process conducted by the company Semen Gresik to the winning vendor specified delivery of bidder list, create request for quotation, quotation maintain vendor, price comparison, process purchase order, payments, and evaluation.

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Home Page

OAI Link

Editorial Team

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Reviewer

Google Scholar

Contact Name Rika Ampuh Hadiguna

Contact Email hadiguna@ft.unand.ac.id

Phone -

Journal Mail Official hadiguna@ft.unand.ac.id

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Location Kota padang, Sumatera barat INDONESIA

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Contact Name
Rika Ampuh Hadiguna

Contact Email
hadiguna@ft.unand.ac.id

Phone
-

Journal Mail Official
hadiguna@ft.unand.ac.id

Editorial Address
-

Location
Kota padang,

Sumatera barat

INDONESIA