cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
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
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
 36   37   38   39   40 
Acceptance and Satisfaction of Food Waste Mobile Application in a Developing Country: Insights from Extended UTAUT2 and IPMA Ari Widyanti; Mutiara Anberty Paro Uli; Rifko Rahmat Kurnianto
Jurnal Optimasi Sistem Industri Vol. 24 No. 2 (2025): Published in December 2025
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.v24.n2.p255-269.2025

Abstract

Food waste is a major global problem and has prompted the development of digital solutions such as food waste mobile applications (FWMA). However, factors influencing the user adoption of these applications, especially in developing countries, remain unexplored. The purpose of this study is to analyze existing behavior towards FWMA and modeling factors that influence acceptance of FWMA in the developing country - Indonesia, while also observing efforts to improve its effectiveness and user satisfaction. To achieve this, an acceptance model is developed using the Extended Unified Acceptance and Use Theory 2 (UTAUT2 Extended) model. Moreover, the Importance-Performance Matrix Analysis (IPMA) framework is used to identify areas for improvement and prioritize efforts to increase customer satisfaction in the application of the FWMA. A preliminary sample of 79 respondents completed an online questionnaire consisting of 30 questions and using a five-point Likert scale with anchor values of strongly agree and strongly disagree. The results show that the average frequency of purchases made by respondents via the FWMA system is relatively low, i.e., three or less per month, and that the majority of respondents learnt about the FWMA system from social media and their friends. As far as demographic data is concerned, women are more likely to use the FWMA than men. In particular, according to the UTAUT2 Extended Model, factors influencing satisfaction with the use of FWMA include social influence, habit and trust; furthermore, satisfaction and different food choices influence the intention to use the use of FWMA. Finally, the IPMA results reinforce the focus on increasing satisfaction through diversified food choices by providing a framework for developers and policy makers to support the uptake of the FWMA in developing economies by building trust, promoting habits and strategically increasing food diversity.
Biomechanical and Perceived Comfort Analysis of FDM 3D-Printed Insoles for Flatfoot Treatment: A Systematic Literature Review Lina Dianati Fathimahhayati; Ardiyanto Ardiyanto; Fitri Trapsilawati; Xiao Liu; Ali Zolfagharian; Herianto Herianto
Jurnal Optimasi Sistem Industri Vol. 24 No. 2 (2025): Published in December 2025
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.v24.n2.p345-366.2025

Abstract

Flatfoot (pes planus), characterized by a reduced or absent medial arch, cause biomechanical disorders, pain and a risk of injury. Customized insoles are a key intervention, with the emergence of 3D printing fused deposition modelling (FDM) based on flexible materials such as thermoplastic polyurethane (TPU) and thermoplastic elastomer (THE). This systematic literature review, based on PRISMA guidelines and analysis of six Scopus studies, assesses the biomechanical and ergonomic properties of these insoles. The results show that flexible 3D printed inserts significantly improve biomechanics by increasing the height of the navicular arch, reducing excessive ankle joint eversion, increasing dorsiflexion and improving the distribution of plantar plate pressure. Regarding perceived comfort, evaluations using the Visual Analog Scale (VAS), the Likert scale and the American Orthopaedic Foot and Ankle Society (AOFAS) questionnaire consistently indicate improved user comfort over no insole or conventional option. Despite these advantages, challenges include limited material options, inconsistent print quality and technical fabrication problems. Further research is needed, especially large-scale studies, to resolve these problems and to improve the clinical use of the product. In conclusion, flexible inserts printed with FDM have the potential to improve both the biomechanical function and the perceived comfort of the footwear use.
Cognitive Load Assessment in Multitasking: An fNIRS Study of Prefrontal Cortex Activation for Ergonomic Insight Ridwan Aji Budi Prasetyo; Herdias Hayyal Falahi; Rais Reskiawan A. Kadir; Hardianto Iridiastadi
Jurnal Optimasi Sistem Industri Vol. 24 No. 2 (2025): Published in December 2025
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.v24.n2.p305-323.2025

Abstract

Although traditional neuroimaging techniques like fMRI and EEG have yielded insightful results, their rigid movement limitations restrict their practical use. Functional near-infrared spectroscopy (fNIRS) offers a practical alternative by allowing researchers to measure cortical activity during more natural task performance, particularly in the prefrontal cortex (PFC)—a key region for attention and executive control. This study uses fNIRS to investigate how multitasking demands affect PFC activation. An eight-channel fNIRS system recorded the brain activity of thirty participants as they completed tasks from the Multi-Attribute Task Battery (MATB). Oxygenated hemoglobin (HbO) signals were the main focus of data preprocessing, and AtlasViewer was used to visualize cortical projections. The superior and middle frontal gyri, which are linked to the dorsolateral prefrontal cortex (dlPFC), showed a significant increase in HbO responses when multitasking. On the other hand, lower activation levels were produced under less demanding circumstances. These results are consistent with resource-based models of attention, which postulate that the brain allocates more cognitive resources, especially in the right PFC, as task complexity increases. Beyond theoretical ramifications, this study shows that fNIRS can be used to detect cognitive load in real time. In high-stakes settings like aviation, healthcare, and mission-critical operations, this capability has potential uses in adaptive systems intended to monitor and reduce mental overload. This study emphasizes fNIRS as a useful tool for comprehending and managing multitasking in today's dynamic work contexts by bridging laboratory research and real-world settings.
Design of Luxury Train Seat Integrating Emotional Perception and Local Wisdom Approaches Afif Hakim; Bambang Suhardi; Pringgo Widyo Laksono; Mirwan Ushada; Jafri Mohd Rohani
Jurnal Optimasi Sistem Industri Vol. 24 No. 2 (2025): Published in December 2025
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.v24.n2.p234-254.2025

Abstract

Although the physical ergonomics of seat design have been extensively studied, emotional comfort is still largely overlooked, especially in public transport. This study addresses this gap by incorporating passengers' emotional perceptions into the design of luxury train seats, in response to documented user discomfort which transcends physical dimensions. The aim was to design seats based on the emotional needs of users and the principles of Kansei engineering, incorporating elements of Javanese cultural values as a form of local wisdom. Emotional responses were captured using Kansei words derived from user interviews, online reviews, and from the expertise of local practitioners. The designs included batik and Javanese decorations. A statistical analysis using Quantitative Theory of Type I (QTT1) identified design elements corresponding to semantic differences between Kansei words. Analysis revealed that the dominant emotional dimension is creative, as indicated by the highest multiple of R-squared 0.9785. This dimension has been operationalized in 14 concrete design elements of the proposed seating concept. The innovative use of batik motifs on the seat backrests was a distinctive feature and underlined the fact that users perceived cultural integration as central to the creative dimension. The study concluded that the integration of emotional perception, represented by the creative dimension, and local wisdom, represented by the batik elements, is a viable strategy for the design of culturally distinct and emotionally attractive luxury train seats. It shows that the culturally rooted approach of Kansei Engineering contributes to the welfare of users.

Page 40 of 40 | Total Record : 394

 36   37   38   39   40 

Filter by Year

2010 2025


Reset
Filter By Issues
All Issue Vol. 24 No. 2 (2025): Published in December 2025 Vol. 24 No. 1 (2025): Published in June 2025 Vol. 23 No. 2 (2024): Published in January 2025 (published late, please read our note) Vol. 23 No. 1 (2024): Published in July 2024 Vol. 22 No. 2 (2023): Published in December 2023 Vol. 22 No. 1 (2023): Published in May 2023 Vol. 21 No. 2 (2022): Published in October 2022 Vol. 21 No. 2 (2022): Published in November 2022 Vol. 21 No. 1 (2022): Published in April 2022 Vol. 21 No. 1 (2022): Published in May 2022 Vol. 20 No. 2 (2021): Published in November 2021 Vol. 20 No. 2 (2021): Published in October 2021 Vol. 20 No. 1 (2021): Published in May 2021 Vol. 20 No. 1 (2021): Published in April 2021 Vol. 19 No. 2 (2020): Published in November 2020 Vol. 19 No. 2 (2020): Published in October 2020 Vol. 19 No. 1 (2020): Published in April 2020 Vol. 19 No. 1 (2020): Published in June 2020 Vol. 18 No. 2 (2019): Published in October 2019 Vol. 18 No. 2 (2019): Published October 2019 Vol. 18 No. 1 (2019): Published in May 2019 Vol. 18 No. 1 (2019): Published April 2019 Vol. 17 No. 2 (2018): Published in October 2018 Vol. 17 No. 1 (2018): Published in April 2018 Vol. 16 No. 2 (2017): Published in October 2017 Vol. 16 No. 1 (2017): Published in May 2017 Vol. 16 No. 1 (2017): The Improved JOSI is Published in May 2017 Vol. 15 No. 2 (2016): Published in November 2016 Vol. 15 No. 1 (2016): Published in March 2016 Vol. 14 No. 2 (2015): Published in 1st October 2015 Vol. 14 No. 2 (2015): Published in October 2015 Vol. 14 No. 1 (2015): Published in April 2015 Vol. 13 No. 2 (2014): Published in 1st October 2014 Vol. 13 No. 2 (2014): Published in October 2014 Vol. 13 No. 1 (2014): Published in April 2014 Vol. 12 No. 2 (2013): Published in 1st October 2013 Vol. 12 No. 1 (2013): Published in 1st April 2013 Vol. 12 No. 2 (2013): Published in October 2013 Vol. 12 No. 1 (2013): Published in April 2013 Vol. 11 No. 2 (2012): Published in 1st October 2012 Vol. 11 No. 1 (2012): Published in 1st April 2012 Vol. 11 No. 2 (2012): Published in October 2012 Vol. 11 No. 1 (2012): Published in April 2012 Vol. 10 No. 2 (2011): Published in 1st October 2011 Vol. 10 No. 1 (2011): Published in 1st April 2011 Vol. 10 No. 2 (2011): Published in October 2011 Vol. 10 No. 1 (2011): Published in April 2011 Vol. 9 No. 2 (2010): Published in 1st October 2010 Vol. 9 No. 1 (2010): Published in 1st April 2010 Vol. 9 No. 2 (2010): Published in October 2010 Vol. 9 No. 1 (2010): Published in April 2010 More Issue