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  • 1.
    Ericsson, Mikael
    et al.
    University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing.
    Johansson, Dahniel
    University West, Department of Engineering Science, Division of Production Systems.
    Stjern, David
    AI-Based Quality Control of Wood Surfaces with Autonomous Material Handling2021In: Applied Sciences, E-ISSN 2076-3417, Vol. 11, no 21, p. 9965-9965Article in journal (Refereed)
    Abstract [en]

    The theory and applications of Smart Factories and Industry 4.0 are increasing the entry into the industry. It is common in industry to start converting exclusive parts, of their production, into this new paradigm rather than converting whole production lines all at once. In Europe and Sweden, recent political decisions are taken to reach the target of greenhouse gas emission reduction. One possible solution is to replace concrete in buildings with Cross Laminated Timber. In the last years, equipment and software that have been custom made for a certain task, are now cheaper and can be adapted to fit more processes than earlier possible. This in combination, with lessons learned from the automotive industry, makes it possible to take the necessary steps and start redesigning and building tomorrows automated and flexible production systems in the wood industry. This paper presents a proof of concept of an automated inspection system, for wood surfaces, where concepts found in Industry 4.0, such as industrial Internet of things (IIoT), smart factory, flexible automation, artificial intelligence (AI), and cyber physical systems, are utilized. The inspection system encompasses, among other things, of the shelf software and hardware, open source software, and standardized, modular, and mobile process modules. The design of the system is conducted with future expansion in mind, where new parts and functions can be added as well as removed.

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  • 2.
    Goel, Sneha
    et al.
    University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing.
    Björklund, Stefan
    University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing.
    Curry, Nicholas
    Treibacher Industrie AG, Althofen, 9330, Austria (AUT).
    Govindarajan, Sivakumar
    International Advanced Research Center for Powder Metallurgy and New Materials, Hyderabad, 500 005, India (IND).
    Wiklund, Urban
    Uppsala University, Applied Materials Science, Uppsala, 75121, Sweden.
    Gaudiuso, Caterina
    University of Bari, Physics Department, via Amendola 173, Bari, 70126, Italy (ITA).
    Joshi, Shrikant V.
    University West, Department of Engineering Science, Research Enviroment Production Technology West.
    Axial plasma spraying of mixed suspensions: A case study on processing, characteristics, and tribological behavior of Al2O3-YSZ coatings2020In: Applied Sciences, E-ISSN 2076-3417, Vol. 10, no 15, article id 5140Article in journal (Refereed)
    Abstract [en]

    Thermal spraying deploying liquid feedstock offers an exciting opportunity to obtain coatings with characteristics vastly different from those produced using conventional spray-grade powders. The most extensively investigated variant of this technique is Suspension Plasma Spraying (SPS), which utilizes a suspension of fine powders in an appropriate medium. The relatively recent advent of axial feed capable plasma spray systems can enable higher throughputs during SPS, provides the possibility for spraying with longer stand-off distances, and also permit the use of suspensions with higher solid loading. The present work investigates axial plasma sprayed coatings produced using a mixed suspension of fine (submicron or nano-sized) powders of Al2O3 and YSZ as a case study. Deposition of the mixed suspension using axial injection plasma spraying, comprehensive evaluation of characteristics of the resulting coatings, and assessment of their tribological behavior were of particular interest. Evaluation of surface morphology, microstructure, and hardness of the coatings reveals that axial SPS of mixed suspensions provides an exciting pathway to realize finely structured multi-constituent coatings using suspensions with as high as 40 wt. % solid loading. The study of scratch, dry sliding wear, and erosion behavior also specifically shows that the addition of YSZ in the Al2O3 matrix can improve the tribological properties of the coating. © 2020 by the authors.

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  • 3.
    Karlsson, Sofia
    et al.
    Umeå University, Department of Surgical and Perioperative Sciences, Surgery, Umeå, 901 87, Sweden.
    Saveman, Britt-Inger
    Umeå University, Department of Surgical and Perioperative Sciences, Surgery, Umeå, 901 87, Sweden.
    Hultin, Magnus
    Umeå University, Department of Surgical and Perioperative Sciences, Anesthesiology and Intensive Care Medicine, Umeå, 901 87, Sweden.
    Eklund, Annika
    University West, Department of Health Sciences, Section for nursing - graduate level.
    Gyllencreutz, Linda
    Umeå University, Department of Surgical and Perioperative Sciences, Surgery, Umeå, 901 87, Sweden.
    Expansive learning process of exercise organizers: The case of major fire incident exercises in underground mines2020In: Applied Sciences, E-ISSN 2076-3417, Vol. 12, no 14, article id 5790Article in journal (Refereed)
    Abstract [en]

    A major fire incident in a Swedish underground mine made the personnel from the mining company and the rescue service realize their limited preparedness. It was the beginning of a collaboration project that included the development of a new exercise model for a more effective joint rescue operation practice. The aim of this study was to explore the collaborative learning process of exercise organizers from the rescue service, mining companies, the emergency medical service, a training company, and academia. The analysis was performed through the application of the theory cycle of expansive learning to the material consisting of documents from 16 collaboration meetings and 11 full-scale exercises. The learning process started by the participants questioning the present practice of the rescue operation and analyzing it by creating a flow chart. An essential part of the process was to model new tools in order to increase the potential for collaboration. The tools were examined and tested during collaboration meetings and implemented during full-scale exercises. The exercise organizers reflected that the process led to organizational development and a better understanding of the other organizations’ perspectives. Consequently, a tentative model for developing the learning process of exercise organizers was developed. © 2020 by the authors.

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  • 4.
    Mohammad, Abdulghafour
    et al.
    University West, School of Business, Economics and IT, Divison of Informatics.
    Vargas, Sergio
    University West, School of Business, Economics and IT, Divison of Informatics.
    Challenges of Using Blockchain in the Education Sector: A Literature Review2022In: Applied Sciences, E-ISSN 2076-3417, Vol. 12, no 13, article id 6380Article in journal (Refereed)
    Abstract [en]

    Blockchain is one of the latest innovations that is increasingly attracting the attention of various stakeholders in different fields, including the education sector. This is primarily due to its attractive features, such as decentralization, transparency, traceability, security, and reliability. Despite its advantages, blockchain still faces several challenges, and the acceptance rate of this technology is still low. Thus, the purpose of this study was to conduct a review of published articles that have discussed the challenges of adopting blockchain in the education sector. The review contained scientific papers published from 2017 to 2022 and, from the screened records, 32 articles were analyzed in full-text form. In this review, 14 challenges were reported and classified, based on the technology-organization-environment (TOE) framework. In addition, this review showed that organizational and environmental barriers received little attention in the literature, compared to technological barriers. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.

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