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  • 1.
    Andreasson, Rebecca
    et al.
    University of Skövde, School of Informatics. University of Skövde, The Informatics Research Centre.
    Lindblom, Jessica
    University of Skövde, School of Informatics. University of Skövde, The Informatics Research Centre.
    Thorvald, Peter
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Distributed Cognition in Manufacturing: Collaborative Assembly Work2016In: Advances in Manufacturing Technology XXX / [ed] Yee Mey Goh, Keith Case, IOS Press, 2016, p. 243-248Conference paper (Refereed)
    Abstract [en]

    Cognitive science is becoming increasingly central within humanfactors and ergonomics (HF&E) and there has long been a call for a more systemicperspective in the area with a somewhat broader unit of analysis. This paperpresents a case study applying the theoretical framework of distributed cognition(DCog), which shows how DCog would offer a more complete understanding ofmanufacturing within its greater context, including the social, cultural, andmaterial surroundings. This paper aims to characterize and analyse dock assemblyof forest machines as a complex socio-technical system from a DCog perspective;focusing on the creation of enacted landscapes in this particular setting. The paperalso exemplifies benefits of using the DCog framework in the manufacturingdomain as a way of grasping the assembly workers’ tacit competence and skills.

  • 2.
    Andreasson, Rebecca
    et al.
    University of Skövde, School of Informatics. University of Skövde, The Informatics Research Centre.
    Lindblom, Jessica
    University of Skövde, School of Informatics. University of Skövde, The Informatics Research Centre.
    Thorvald, Peter
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Interruptions in the wild: portraying the handling of interruptions in manufacturing from a distributed cognition lens2017In: Cognition, Technology & Work, ISSN 1435-5558, E-ISSN 1435-5566, Vol. 19, no 1, p. 85-108Article in journal (Refereed)
    Abstract [en]

    This paper presents a study examining interruptionsin the wild by portraying the handling of interruptionsin manufacturing from a distributed cognitionlens. By studying how interruptions occur and are handledin the daily activities of a work team at a large foundry forcasting heavy diesel engines, we highlight situations whenthe propagation, transformation, and representation ofinformation are not supported by prescribed work processesand propose recommendations for how this can beamended. The study was conducted by several visits to theaforementioned factory with cognitive ethnography as thebasis for the data collection. The focus was on identifyinginterruptions and analysing these through a distributedcognition framework as an initial step towards studyinginterruptions in a manufacturing environment. The keyfindings include the identification of three, previouslyundefined, types of interruptions and the conclusion thatinterruptions do indeed affect the distributed workload ofthe socio-technical system and thus the overall productionperformance at the casting line.

  • 3.
    Andreasson, Rebecca
    et al.
    University of Skövde, School of Informatics. University of Skövde, The Informatics Research Centre. Department of Information Technology, Visual Information and Interaction, Uppsala University, Uppsala, Sweden.
    Lindblom, Jessica
    University of Skövde, School of Informatics. University of Skövde, The Informatics Research Centre.
    Thorvald, Peter
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Tool use and collaborative work of dock assembly in practice2017In: Production & Manufacturing Research, ISSN 2169-3277, Vol. 5, no 1, p. 164-190Article in journal (Refereed)
    Abstract [en]

    In order to deepen the understanding of the intrinsic interactions andinterplay between humans, tools, and environment from a systemsperspective, research in the wild (RITW) approaches have gainedtraction during recent decades as they provide a higher ecologicalvalidity of findings. This paper presents a RITW study, investigatinghow assembly, in this case dock assembly of forwarders, was donein practice. As our theoretical foundation, we used the framework ofdistributed cognition, which is one of the main pillars of RITW. Thefindings are presented in narrative form, describing and highlightingthat the workers achieve an efficient production outcome by beingintegral parts of the whole production process and doing so throughcoordination of activities benefitting the shared goal of the distributedsocio-technical system.

  • 4.
    Andreasson, Rebecca
    et al.
    University of Skövde, School of Informatics. University of Skövde, The Informatics Research Centre.
    Lindblom, Jessica
    University of Skövde, School of Informatics. University of Skövde, The Informatics Research Centre.
    Thorvald, Peter
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Towards an increased degree of usability work in organizations2015In: Procedia Manufacturing, ISSN 2351-9789, Vol. 3, p. 5739-5746Article in journal (Refereed)
    Abstract [en]

    It is widely recognized that there is a substantial gap between usability research and practice where UCD approaches are rarelyapplied in practice due to arguments regarding the intricate nature of its methods and techniques. This paper presents an actionresearch study designed to investigate and analyze the potentials for an increased degree of UCD activities in the earlydevelopment phases of advanced information systems technology. The results demonstrate that there is a large interest inusability but that organizational priority and competence is often lacking. Instead one relies heavily on questionable conceptssuch as „trained professionals‟ to excuse the low effort towards usability. Based on the results, six recommendations forimproved usability work in R&D organizations are presented, focusing on the importance of prioritization of, and education inusability work.

  • 5.
    Brolin, Anna
    et al.
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Bäckstrand, Gunnar
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Thorvald, Peter
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Högberg, Dan
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Case, Keith
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Kitting as an information source in manual assembly2012In: Advances in Ergonomics in Manufacturing / [ed] Stefan Trzcieliński & Waldemar Karwowski, CRC Press, 2012, p. 346-353Chapter in book (Refereed)
    Abstract [en]

    In manual assembly, a strategy to meet the goal of efficient production is the increased use of kitting as a material supply principle. Even though kitting is already implemented in industry, there are still uncertainties regarding the effects of introducing kits, particularly from a human factors perspective.

    This paper presents initial steps in the development of a method to be used for the evaluation of kitting. This from an information source point of view and for studying effects related to productivity and quality. The methodology is projected to act as a foundation for how to carry out a subsequent comprehensive case study. The purpose of the case study is to explore how kitting affects the cognitive workload compared to the ordinary material rack combined with part numbers used in the current manufacturing industry. This is done by measuring productivity; time spent on assembling a product, and quality; number of assembly errors. One step in the methodology development process, which is described in this paper, was to conduct a pilot study, primarily to test the methodology related to the selection of measurement parameters, as well as for getting experiences from running the methodology with real test subjects.

  • 6.
    Brolin, Anna
    et al.
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre. Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, UK.
    Case, Keith
    Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, UK.
    Thorvald, Peter
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Cognitive Aspects Affecting Human Performance in Manual Assembly2016In: Advances in Manufacturing Technology XXX / [ed] Yee Mey Goh, Keith Case, IOS Press, 2016, p. 231-236Conference paper (Refereed)
    Abstract [en]

    This paper concerns the handling of information in assembly work environments. Several studies involving both literature reviews, case studies andobservations were conducted to find factors that affect human performance in manual assembly. The main experiment with 36 subjects used a mixed method design with a quantitative study, including time and errors as dependant measures,a qualitative study, including workload ratings, and a questionnaire. The experiment involved the assembly of a pedal car and the components werepresented using structured kits, unstructured kits and material racks. Assembly information was presented as text & component numbers or photographs, and situations with and without component variation were considered. Among theresults it was found that assembly times and workload ratings were lower when using a kit, whereas using a material rack resulted in perceived decreased workflow and increased stress and frustration. Assembly times and workload ratings were lower when using photographs, whereas using text and numbers increased mental workload.

  • 7.
    Brolin, Anna
    et al.
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Case, Keith
    Loughborough University, United Kingdom.
    Thorvald, Peter
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Interaction Effects Affecting Human Performance in Manual Assembly2018In: Advances in Manufacturing Technology XXXII: Proceedings of the 16th International Conference on Manufacturing Research, incorporating the 33rd National Conference on Manufacturing Research, September 11–13, 2018, University of Skövde, Sweden / [ed] Peter Thorvald, Keith Case, Amsterdam, Netherlands: IOS Press, 2018, p. 265-270Conference paper (Refereed)
    Abstract [en]

    This paper presents an experimental study aimed at investigating interaction effects affecting personnel in manual assembly. The main experiment with 36 subjects used a mixed method design which included a quantitative study, including time and errors as dependent measures, and a qualitative study, including workload ratings and a questionnaire. The overall task in the experiment was to assemble components on a pedal car. The main factors involved were assembly information (text & component numbers or photographs), material presentation (using structured kits, unstructured kits and material racks) and component variation (situations with and without component variation). It was found that performance, measured in assembly time, was best when combining photographs with no component variants and when using an unstructured kit.

  • 8.
    Brolin, Anna
    et al.
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre. Department of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough, United Kingdom.
    Thorvald, Peter
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Case, Keith
    Department of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough, United Kingdom.
    Experimental study of cognitive aspects affecting human performance in manual assembly2017In: Production & Manufacturing Research, ISSN 2169-3277, Vol. 5, no 1, p. 141-163Article in journal (Refereed)
    Abstract [en]

    This study investigate different ways of presenting material and information at workstations while using mixed assembly mode with product variants. The experimental set up annotated an assembly line involving 36 subjects. The material presentation factor involved the use of a material rack compared to using an unstructured kit as well as a structured kit. The information presentation factor involved using a text and number instruction compared to a photograph instruction, and situations with and without component variation were considered. Results show that assembly times and workload ratings were lower when using a kit, whereas using a material rack resulted in perceived decreased workflow and increased stress and frustration. Moreover, assembly times and workload ratings were lower when using photographs, whereas using text and numbers increased mental workload. The results could be useful when planning work places and production systems in order to obtain a better workflow and an increased human performance. 

  • 9.
    Bäckstrand, Gunnar
    et al.
    University of Skövde, School of Technology and Society.
    Thorvald, Peter
    University of Skövde, School of Technology and Society.
    De Vin, Leo J.
    University of Skövde, School of Technology and Society.
    Högberg, Dan
    University of Skövde, School of Technology and Society.
    Case, Keith
    University of Skövde, School of Technology and Society.
    The impact of information presentation on work environment and product quality: A case study2008In: Ergonomics is a lifestyle = Vinnuvistfræði er lífstíll: NES 2008 : abstracts, Kópavogur: Vinnuvistfræðifélag Íslands , 2008Conference paper (Refereed)
  • 10.
    Bäckstrand, Gunnar
    et al.
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre. Swerea IVF.
    Thorvald, Peter
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Nylén, Ulf
    University of Skövde, External Relations and Communication Office.
    Flexibel montering möter industrins utmaningar2013In: Teknik och tillväxt, no 3, p. 5-Article in journal (Other (popular science, discussion, etc.))
  • 11.
    Case, Keith
    et al.
    University of Skövde, School of Technology and Society.
    Bäckstrand, Gunnar
    University of Skövde, School of Technology and Society.
    Högberg, Dan
    University of Skövde, School of Technology and Society.
    Thorvald, Peter
    University of Skövde, School of Technology and Society.
    De Vin, Leo J.
    University of Skövde, School of Technology and Society.
    An assembly line information system study2008In: Advances in manufacturing technology - XXII: Proceedings of the 6th International Conference on Manufacturing Research (ICMR2008) / [ed] Kai Cheng, Harris Makatsoris & David Harrison, Uxbridge: Brunel University , 2008, p. 181-188Conference paper (Refereed)
  • 12.
    De Vin, Leo J.
    et al.
    University of Skövde, School of Technology and Society.
    Ng, Amos H. C.University of Skövde, School of Technology and Society.Thorvald, PeterUniversity of Skövde, School of Technology and Society.Sullivan, W. G.Ahmad, M. M.
    18th International Conference on Flexible Automation and Intelligent Manufacturing: FAIM 20082009Conference proceedings (editor) (Other academic)
  • 13.
    de Vin, Leo J
    et al.
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Ng, Amos H CUniversity of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.Thorvald, PeterUniversity of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.Sullivan, William GVirginia Tech, USA.Ahmad, MunirUniversity of Teesside, UK.
    Proceedings of the 18 th International Conference on Flexible Automation and Intelligent Manufacturing FAIM 2008: June 30th  – July 2nd, 2008 University of Skövde, Sweden2008Conference proceedings (editor) (Refereed)
  • 14.
    Fast-Berglund, Åsa
    et al.
    Chalmers University of Technology, Gothenburg, Sweden .
    Thorvald, Peter
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Billing, Erik
    University of Skövde, School of Informatics. University of Skövde, The Informatics Research Centre.
    Palmquist, Adam
    Insert Coin, Gothenburg, Sweden.
    Romero, David
    Tecnologico de Monterrey, Mexico.
    Weichhart, Georg
    Profactor, Studgart, Austria.
    Conceptualizing Embodied Automation to Increase Transfer of Tacit knowledge in the Learning Factory2018In: Proceedings of IEEE 2018 International Conference on Intelligent Systems (IS), IEEE, 2018Chapter in book (Refereed)
    Abstract [en]

    This paper will discuss how cooperative agent-based systems, deployed with social skills and embodied automation features, can be used to interact with the operators in order to facilitate sharing of tacit knowledge and its later conversion into explicit knowledge. The proposal is to combine social software robots (softbots) with industrial collaborative robots (co-bots) to create a digital apprentice for experienced operators in human- robot collaboration workstations. This is to address the problem within industry that experienced operators have difficulties in explaining how they perform their tasks and later, how to turn this procedural knowledge (knowhow) into instructions to be shared among other operators. By using social softbots and co-bots, as cooperative agents with embodied automation features, we think we can facilitate the ‘externalization’ of procedural knowledge in human-robot interaction(s). This enabled by the capabilities of social cooperative agents with embodied automation features of continuously learning by looking over the shoulder of the operators, and documenting and collaborating with them in a non-intrusive way as they perform their daily tasks. 

  • 15.
    Harlin, Ulrika
    et al.
    Department of Product Realization, Swerea IVF AB, Sweden / Department of Product and Production development, Chalmers University, Sweden.
    Gullander, Per
    Department of Product Realization, Swerea IVF AB, Sweden.
    Bäckstrand, Gunnar
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre. Department of Product Realization, Swerea IVF AB, Sweden.
    Thorvald, Peter
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Moestam, Lena
    AB Volvo, Sweden.
    Flexible balancing of assembly systems and its impact on performance and human factors – a scenario-based analysis2013In: Proceedings of NES 2013, 45th Nordic Ergonomics & Human Factors Society conference, Iceland, August 2013, 2013Conference paper (Refereed)
    Abstract [en]

    Increased production complexity challenges traditional methods for planning  and  preparation  of  assembly.  This  paper  addresses alternative approaches for assembly line balancing and an assembly plant  area  was  studied  in  a  cross-disciplinary  scenario-based analysis. Results show that the complexity in products, operations, flow, and organisation increases setting new demands on developing line balancing methods, including meeting the requirements and understanding the impact, e.g. competences, organization, support functions. Further research is suggested for increase knowledge of what impact different line balancing concepts has on performance, human work and working conditions as well as development of strategies and guiding principles for dynamic planning.

  • 16.
    Kolbeinsson, Ari
    et al.
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Lindblom, Jessica
    University of Skövde, School of Informatics. University of Skövde, The Informatics Research Centre.
    Thorvald, Peter
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Missing mediated interruptions in manual assembly: Critical aspects of breakpoint selection2017In: Applied Ergonomics, ISSN 0003-6870, E-ISSN 1872-9126, Vol. 61, p. 90-101Article in journal (Refereed)
    Abstract [en]

    The factory of the future aims to make manufacturing more effective and easily customisable, using advanced sensors and communications to support information management. In this paper, we examine how breakpoint selection during interruption management can fail, even when using recommendations for interruption management from existing research. We present an experiment based on prior work where mediated interruptions (i.e. smart interruptions that should interrupt at opportune moments) were missed by participants when sent at one of two pre-defined breakpoints. These breakpoints were selected based on existing research to minimise the cost of interruption, which can involve longer times to complete tasks as well as making errors on tasks. Missing mediated interruptions in this way was unexpected, and the prior study was not configured to measure this effect, which has led to the experiment detailed here. We strive to explore whether there is a risk of missing notifications when mediated interruptions are used, and how this is affected by breakpoint selection. This was investigated through an experiment that uses tasks and environments that simulate a manufacturing assembly facility.

    The results indicate that the effect exists, i.e. that participants miss significantly more notifications when interrupted at fine breakpoints than when interrupted at coarse breakpoints. An embodied cognition perspective was used for analysis of the tasks to understand the cause of the effect. This analysis shows that an overlap between “action” and “anticipation of action” can account for why participants miss notifications at fine breakpoints. Based on these findings, recommendations were developed for designing interruption systems that minimise the costs (errors and time) imposed by interruptions during assembly tasks in manufacturing.

  • 17.
    Kolbeinsson, Ari
    et al.
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Thorvald, Peter
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Lindblom, Jessica
    University of Skövde, School of Informatics. University of Skövde, The Informatics Research Centre.
    Context aware interruptions: Existing research and required research2014In: Advances in Cognitive Engineering and Neuroergonomics / [ed] Kay Stanney & Kelly S. Hale, AHFE , 2014, p. 260-272Conference paper (Refereed)
    Abstract [en]

    Companies in various fields are developing information systems that are supposed to show information in a context sensitive manner. This involves modifying user interfaces based on the current activity and location of the user. The research that exists for context aware, task aware, and location aware systems come mostly from research in the office environment and using stationary work computers using standard mouse and keyboard-operated systems. Other environments, such as manufacturing environments, have not received the same research attention, and therefore research is required to see whether existing theories and frameworks apply to the manufacturing domain. Adding to this, context aware systems are now being created for new classes of devices such as mobile and wearable devices, to be used in multiple domains. All this requires an investigation and validation of older research, and shows how the research of the basic human factors surrounding new devices and domains has fallen behind the development of the devices themselves. This paper examines shortly how recent changes advances in technology affect what is required from the field of interruption research, as well as what is needed to support other domains than the office environment. 

  • 18.
    Kolbeinsson, Ari
    et al.
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Thorvald, Peter
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Lindblom, Jessica
    University of Skövde, School of Informatics. University of Skövde, The Informatics Research Centre.
    Coordinating the interruption of assembly workers in manufacturing2017In: Applied Ergonomics, ISSN 0003-6870, E-ISSN 1872-9126, Vol. 58, p. 361-371Article in journal (Refereed)
    Abstract [en]

    This paper examines how interruptions from information and communications technology systems affect errors and the time to complete tasks for assembly workers. Interruptions have previously been examined in laboratory experiments and office environments, but not much work has been performed in other authentic environments. This paper contains the results of an experiment that was performed in a simulated manufacturing assembly environment, which tested the effects of interruptions on a manual assembly task. The experiment used existing interruption coordination methods as a basis, and the results showed a difference in the effect of interruptions and interruption coordination between cognitively complex laboratory tasks and manual assembly tasks in an authentic environment. Most notably, the negative effects of interruptions delivered without consideration were smaller in this experiment. Based on these findings, recommendations were developed for designing interruption systems for minimizing the costs (errors and time) imposed by interruptions during assembly tasks in manufacturing.

  • 19.
    Lindblom, Jessica
    et al.
    University of Skövde, School of Informatics. University of Skövde, The Informatics Research Centre.
    Thorvald, Peter
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Manufacturing in the wild: viewing human-based assembly through the lens of distributed cognition2017In: Production & Manufacturing Research, ISSN 2169-3277, Vol. 5, no 1, p. 57-80Article in journal (Refereed)
    Abstract [en]

    The interdisciplinary field of cognitive science has been and isbecoming increasingly central within human factors and ergonomics(HF&E) and, since at the same time, there has long been a call for a more systems perspective in the area with a somewhat wider unit of analysis. This paper argues that the theoretical framework of distributed cognition would greatly benefit the application of HF&E to manufacturing and would offer a more holistic understanding of the interactions between different entities within a greater context,including the social, cultural and materialistic. We aim to characterize and analyse manufacturing as a complex socio-technical system from a distributed cognition perspective; focusing on the use, mediation and integration of different forms of representations, tools and artefacts in this domain. We present illustrative examples fromauthentic manual assembly, showing the cognitively distributed nature of the work, ranging from scaffolding strategies of the individual worker to the emergent properties of a whole assembly line. The paper further proposes and provides benefits of using a distributed cognition framework as a novel approach in the toolboxfor the HF&E discipline, where it may have been found before, but the application to manufacturing has been absent.

  • 20.
    Lindblom, Jessica
    et al.
    University of Skövde, School of Informatics. University of Skövde, The Informatics Research Centre.
    Thorvald, Peter
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Towards a framework for reducing cognitive load in manufacturing personnel2014In: Advances in Cognitive Engineering and Neuroergonomics / [ed] Kay Stanney & Kelly S. Hale, AHFE , 2014, p. 233-244Conference paper (Refereed)
    Abstract [en]

    The interest in cognitive aspects of human performance has dramatically increased in recent years in manufacturing, complementing the area of physical ergonomics, and the expanded focus on cognitive aspects may offer significant insights and contributions to industrial domains. A considerably increased interest has been directed at the role and effects cognitive load has on human performance, and ultimately on production outcome. The main question addressed is: How can an understanding of cognitive load in manufacturing lead us to design better workplaces for the personnel at the shop floor? To answer this question, we have to consider how technology interacts with work environment and with human cognition from a systems perspective. Technology should be considered a resource in the design of a better working environment, aid those activities for which we are poorly suited cognitively, and enhance those cognitive skills for which we are ideally suited. This has resulted in a potential framework of factors that might have impact on high cognitive load, consisting of three levels; internal factors, external factors, and activity space. The initial framework focuses primarily on the former factors, identifying risks where a high cognitive load might lead to difficulty of work, negatively affecting production outcome.

  • 21.
    Mattsson, Sandra
    et al.
    Chalmers University of Technology.
    Fast-Berglund, Åsa
    Chalmers University of Technology.
    Li, Dan
    Chalmers University of Technology.
    Thorvald, Peter
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Forming a cognitive automation strategy for Operator 4.0 in complex assembly2018In: Computers & industrial engineering, ISSN 0360-8352, E-ISSN 1879-0550Article in journal (Refereed)
    Abstract [en]

    Due to today’s technological advances in the area of Industry 4.0, having a strategy for cognitive automation solutions is crucial. Operator 4.0, will have handle and manage different work tasks ranging from learning new tasks to solving difficult problems and initiate changes. To support the operator moving between these tasks a strategy for the design of cognitive automation solutions is needed. The suggested strategy has three steps: 1) select assembly phases, 2) choose level of cognitive automation carrier and 3) suggest cognitive automation content. It is important that the operator is part of the design and that the solution supports movement between the phases learning, operational and disruptive phases. The strategy could support manufacturing companies meeting challenges regarding social sustainability e.g. stress, attractive workplaces and demography changes as well as system transparency and complexity.

  • 22.
    Mattsson, Sandra
    et al.
    Chalmers University of Technology, Gothenburg, Sweden.
    Fast-Berglund, Åsa
    Chalmers University of Technology, Gothenburg, Sweden.
    Thorvald, Peter
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    A Relationship Between Operator Performance and Arousal in Assembly2016In: Procedia CIRP, ISSN 2212-8271, E-ISSN 2212-8271, Vol. 44, p. 32-37Article in journal (Refereed)
    Abstract [en]

    In order to meet the challenges of future complex systems, manufacturing companies need to better understand how social sustainability affects the operator. One way of studying this is to investigate the possible relationships between operator performance and emotion in an assembly experiment. 60 participants took part in an experiment to investigate the relationships between operator performance and objective and subjective arousal. Results showed a weak relationship between operator performance and objective arousal but no significant relationship was found between performance and subjective arousal. The relationships indicate that further studies on operator emotion could be important to better assembly performance. A tool for doing this might be the Qsensor used in this experiment (measure of objective arousal). More studies are needed to further investigate found relationship and if objective emotion measures can be used to predict performance at assembly workstations.

  • 23.
    Thorvald, Peter
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Comparing the use of article numbers to alternate information syntaxes2013In: Proceedings of NES 2013, 45th Nordic Ergonomics & Human Factors Society conference, Iceland, August 2013, 2013Conference paper (Refereed)
    Abstract [en]

    Using article numbers as identifiers in industry is a well-established practice. However, previous investigations have indicated, although failed to confirm, shortcomings in this tradition when used in human based assembly. This paper will report findings from an experimental study where subjects were asked to perform a reaction test designed to test the response to different types of syntaxes. These syntaxes where article numbers (control), symbols, and names of famous figures. Results show that subjects were able to significantly faster identify a trigger and respond accordingly when dealing with triggers with semantic content (symbols and names) than with article numbers.

  • 24.
    Thorvald, Peter
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Presenting Information in Manual Assembly2011Doctoral thesis, monograph (Other academic)
    Abstract [en]

    Ever since industrialization, manufacturing companies have competed with each other in trying to make the best and the cheapest product and the automotive industry is definitely no exception. The ‘arms race’ between truck and car manufacturers has pushed manufacturing technology and production practice to where it is today. However, whereas companies have traditionally competed with the engineering excellence and technology of their products, the human effort in production is often neglected. After all, there are still many tasks that require the flexibility and intelligence of a human worker.

    This thesis focuses entirely on the information context of assembly workers. It investigates and discusses their general information behaviour in terms of information need, syntax of information, information sources and technology as well as basic cognitive abilities used to utilize information such as attention and memory. The thesis presents relevant literature on the subject of information behaviour and pinpoints potential hazards of information design in manual assembly. It also identifies three hypotheses that suggest improved productivity and quality of work as a result of certain changes in the information landscape. One hypothesis deals with the layout of information, a second deals with the syntax used to identify parts and a third deals with the information medium used to convey information.

    Analysis of empirical data gathered shows, among other things, that using unstructured and batched information favours productivity of work; using a syntax with semantic content as opposed to traditional article numbers without any semantic content also improves productivity of work; and using a mobile information unit betters the quality of work.

    The purpose of the thesis is to present the beginnings of a road map towards the greater understanding of information presentation in manual assembly. As previous research on this application area has been scarce, it draws upon existing theories found in other sciences, primarily cognitive science and its applications such as Human-Computer Interaction (HCI), information theory and human error.

    􀀁

  • 25.
    Thorvald, Peter
    et al.
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Brolin, Anna
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Högberg, Dan
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Case, Keith
    Mechanical and Manufacturing Engineering, Loughborough University.
    Using Mobile Information Sources to Increase Productivity and Quality2010In: Proceedings of the 3rd Applied Human Factors and Ergonomics (AHFE) International Conference / [ed] Gavriel Salvendy, Waldemar Karwowski, Louisville: AHFE International , 2010Conference paper (Refereed)
    Abstract [en]

    This paper presents an experimental study made on the use of different kinds of information sources in manual assembly. The general idea is that only the necessary information should be presented to the worker and it should be presented where and when the worker needs it as this is believed to both save time and unload cognitive strain. To account for the latter two aspects of this thought, where and when, this paper investigates the use of a handheld unit as an information source in manual assembly. Having a mobile information system, such as a Personal Digital Assistant (PDA), that can be carried with you at all times, as opposed to a stationary one, such as a computer terminal, is hypothesized to greatly improve productivity and quality. Experimental results show that the use of a PDA significantly improves quality whereas productivity does not significantly improve.

  • 26.
    Thorvald, Peter
    et al.
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Bäckstrand, Gunnar
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Högberg, Dan
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Case, Keith
    Loughborough University, Loughborough, UK.
    Syntax and Sequencing of Assembly Instructions2012In: Advances in Usability Evaluation: Part II / [ed] Francesco Rebelo & Marcelo M. Soares, CRC Press, 2012, p. 266-275Chapter in book (Refereed)
    Abstract [en]

    Minimalism of design is a concept often found in Human-computer interaction (HCI). It is a concept that emphasizes the presentation of as little information as possible to reduce the perceptual strain and visual search of the subject. However, in a manufacturing context, such as in manual assembly, state of the art information presentation is rarely minimalistic. Rather, organizations tend to push out as much information as possible without necessarily concerning themselves with how this information is presented to, or perceived by, the worker. This leads to a situation that is far from ideal from an HCI perspective, likely to reduce human performance and wellbeing, in turn negatively affecting overall production system performance. Obviously, there are several potential ways of addressing this issue. Perhaps the most evident way is to simply reduce the amount of information that is presented and only present the essentials. This paper will investigate and discuss how information presentation can be minimized without reducing the information content through information syntax and layout.

  • 27.
    Thorvald, Peter
    et al.
    University of Skövde, School of Technology and Society.
    Bäckstrand, Gunnar
    University of Skövde, School of Technology and Society.
    Högberg, Dan
    University of Skövde, School of Technology and Society.
    de Vin, Leo
    University of Skövde, School of Technology and Society.
    Case, Keith
    University of Skövde, School of Technology and Society.
    Demands on technology from a human automatism perspective in manual assembly2008In: Proceedings of the 18th International Conference on Flexible Automation and Intelligent Manufacturing, FAIM2008, Skövde, Sweden, June 30 - July 2 / [ed] Leo J. De Vin, Amos H. C. Ng, Peter Thorvald, W. G. Sullivan & M. M. Ahmad, Skövde: University of Skövde , 2008, p. 632-638Conference paper (Refereed)
  • 28.
    Thorvald, Peter
    et al.
    University of Skövde, School of Technology and Society.
    Bäckstrand, Gunnar
    University of Skövde, School of Technology and Society.
    Högberg, Dan
    University of Skövde, School of Technology and Society.
    de Vin, Leo
    Case, Keith
    University of Skövde, School of Technology and Society.
    Information Presentation in Manual Assembly – A Cognitive Ergonomics Analysis2008In: Ergonomics is a lifestyle = Vinnuvistfræði er lífstíll: NES 2008 : abstracts, Kópavogur: Vinnuvistfræðifélag Íslands , 2008Conference paper (Refereed)
    Abstract [en]

    In current practice, information is often presented to the operators under the false belief that more information leads to better quality. However, one must consider the cognitive capacity limitations of the human operator and design information systems based on these constraints. Important questions include what medium to use; audio, visual, paper based or computer screen systems? Also the syntax in terms of symbols and text, together with information content and the formatting of the system are important factors that will require much focus to result in a good information system. The paper describes a case where paper-based assembly instructions of a major automotive company have been studied, focusing on information design and cognitive ergonomics in information seeking behaviour. Within the case study, the paper-based information system has been evaluated with two focuses: automatic information behaviour (automatism) and consistency of information presentation in the operator graphical user interface (GUI). It is suggested that systems that do not offer clear and easy-to-find entry points to information will eventually cause quality issues in production.

  • 29.
    Thorvald, Peter
    et al.
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Case, KeithUniversity of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre. Loughborough University.
    Advances in Manufacturing Technology XXXII: Proceedings of the 16th International Conference on Manufacturing Research, Incorporating the 33rd National Conference on Manufacturing Research, September 11-13, 2018, University of Skövde, Sweden2018Conference proceedings (editor) (Refereed)
  • 30.
    Thorvald, Peter
    et al.
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Högberg, Dan
    University of Skövde, School of Technology and Society. University of Skövde, The Virtual Systems Research Centre.
    Case, Keith
    University of Skövde, The Virtual Systems Research Centre. Mechanical and Manufacturing Technology, Loughborough University, Loughborough, Leicestershire, LE11 3TU, UK.
    Applying cognitive science to digital human modelling for user centred design2012In: International Journal of Human Factors Modelling and Simulation, ISSN 1742-5549, Vol. 3, no 1, p. 90-106Article in journal (Refereed)
    Abstract [en]

    To build software which, at the press of a button, can tell you what cognition-related hazards there are within an environment or a task, is probably well into the future if it is possible at all. However, incorporating existing tools such as task analysis tools, interface design guidelines and information about general cognitive limitations in humans, could allow for greater evaluative options for cognitive ergonomics. The paper discusses previous approaches to the subject and suggests adding design and evaluative guiding in digital human modelling that will help a user with little or no knowledge of cognitive science to design and evaluate a human-product interaction scenario.

  • 31.
    Thorvald, Peter
    et al.
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society. Loughborough University, Loughborough, United Kingdom.
    Högberg, Dan
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society.
    Case, Keith
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Technology and Society. Loughborough University, Loughborough, United Kingdom.
    Incorporating Cognitive Aspects in Digital Human Modeling2009In: Digital Human Modeling: Second International Conference, ICDHM 2009, Held as Part of HCI International 2009, San Diego, CA, USA, July 19-24, 2009. Proceedings / [ed] Vincent G. Duffy, Berlin Heidelberg: Springer Berlin/Heidelberg, 2009, p. 323-332Conference paper (Refereed)
    Abstract [en]

    To build software which, at the press of a button, can tell you what cognition related hazards there are within an environment or a task, is probably well into the future if it is possible at all. However, incorporating existing tools such as task analysis tools, interface design guidelines and information about general cognitive limitations in humans, could allow for greater evaluative options for cognitive ergonomics. The paper will discuss previous approaches on the subject and suggest adding design and evaluative guiding in DHM that will help a user with little to no knowledge of cognitive science, design and evaluate a human-product interaction scenario.

  • 32.
    Thorvald, Peter
    et al.
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Engineering Science.
    Högberg, Dan
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Engineering Science.
    Case, Keith
    University of Skövde, The Virtual Systems Research Centre. University of Skövde, School of Engineering Science. Mechanical and Manufacturing Engineering, Loughborough University, Loughborough, United Kingdom.
    The effect of information mobility on production quality2014In: International journal of computer integrated manufacturing (Print), ISSN 0951-192X, E-ISSN 1362-3052, Vol. 27, no 2, p. 120-128Article in journal (Refereed)
    Abstract [en]

    This article investigates the use of a hand-held unit as an information source in manual assembly. Having a mobile information system, such as a Personal Digital Assistant (PDA), that can be brought at all times, as opposed to a stationary one, such as a computer terminal, is hypothesised to increase the information range and thus improves assembly performance. The increased information range is argued to be due to assembly workers employing a cost-benefit strategy, where the cost of gathering information is compared with the assumed benefit of it. This article reports empirical data comparing the use of a mobile information carrier with a traditional stationary computer, and results show that the use of a PDA significantly improves quality, whereas productivity does not significantly improve quality. © 2013 Copyright Taylor & Francis.

  • 33.
    Thorvald, Peter
    et al.
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Lindblom, Jessica
    University of Skövde, School of Informatics. University of Skövde, The Informatics Research Centre.
    Distributed cognition at work - A systemic perspective on human based manufacturing2015In: Proceedings of ICMR 2015 / [ed] Linda Newnes, Aydin Nassehi & Vimal Dhokia, Bath, UK: University of Bath , 2015, p. 195-200Conference paper (Refereed)
    Abstract [en]

    Cognitive science is becoming increasingly central within human factors & ergonomics and, since at the same time, there has long been a call for a more systemic perspective in the area with a somewhat wider unit of analysis, this paper argues that the theoretical framework of distributed cognition would greatly benefit the area. It would offer a more complete understanding of the user within a greater context, be it social, cultural or materialistic. This paper aims to characterize and analyse the domain of manufacturing as a complex socio-technical system from a distributed cognition perspective; focusing on the use, mediation and integration of different forms of representations, tools and artefacts in this domain.  The paper further proposes and exemplifies benefits of using a distributed cognition framework in the manufacturing domain as studied by human factors and ergonomics.

  • 34.
    Thorvald, Peter
    et al.
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Lindblom, Jessica
    University of Skövde, School of Informatics. University of Skövde, The Informatics Research Centre.
    Initial development of a cognitive load assessment tool2014In: Advances in Cognitive Engineering and Neuroergonomics / [ed] Kay Stanney & Kelly S. Hale, AHFE , 2014, p. 223-232Conference paper (Refereed)
    Abstract [en]

    Interest in cognitive or mental workload has over the last couple of years increased drastically from a manufacturing application perspective.  More and more, people are becoming aware of the cognitive limitations that may have great impact on production outcome. The more easily observable area of physical ergonomics has been successfully investigated for a long time and it would seem as though focus has broadened to also include cognitive ergonomics. Considering the effects that a large cognitive load has on human performance, knowledge regarding the role of the cognizing human in a manufacturing environment could potentially have significant effect on production outcome (i.e. quality and productivity). With this in mind, developing and using methods and tools for assessment of the cognitive burden associated with particular tasks or workstations should be and is of substantial interest to the manufacturing industry. Whatever assessment methods exist in the scientific literature today are almost exclusively expert tools where significant expertise in the area of cognitive ergonomics/psychology/science is required. This paper reports parts of the development process and initial version of a non-expert tool for assessment of cognitive load in manual production environments, primarily manual assembly.

  • 35.
    Thorvald, Peter
    et al.
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Lindblom, Jessica
    University of Skövde, School of Informatics. University of Skövde, The Virtual Systems Research Centre.
    Andreasson, Rebecca
    University of Skövde, School of Informatics. University of Skövde, The Informatics Research Centre. Uppsala Universitet.
    CLAM – A method for cognitive load assessment in manufacturing2017In: Advances in Manufacturing Technology XXXI / [ed] Gao, J., El Souri, M., Keates, S., Amsterdam: IOS Press, 2017, Vol. 6, p. 114-119Conference paper (Refereed)
    Abstract [en]

    The increasing complexity and demands of assembly operations in manufacturing has been shown to lead to increased cognitive load in assembly workers. Previous work has outlined the complexity of an assembly worker’s situation both in terms of difficulty and speed of work and there have been a few attempts at creating frameworks and methods for understanding the key aspects of what creates increased cognitive load. This paper presents a tool for assessing cognitive load in manufacturing, primarily assembly. The paper presents the method and an accompanying tool as well as some insights derived from this method development. The intended contribution of the work is to make a difference in reducing the cognitive load of assembly workers on the shop floor, thus focusing the development on applicability and usability of the tool in practice. 

  • 36.
    Thorvald, Peter
    et al.
    University of Skövde, School of Engineering Science. University of Skövde, The Virtual Systems Research Centre.
    Lindblom, Jessica
    University of Skövde, School of Informatics. University of Skövde, The Informatics Research Centre.
    Schmitz, Sebastian
    FIR at RWTH Achen, Germany.
    Modified pluralistic walkthrough for method evaluation in manufacturing2015In: Procedia Manufacturing, ISSN 2351-9789, Vol. 3, p. 5139-5146Article in journal (Refereed)
    Abstract [en]

    This paper presents a mixed evaluation design including quantitative and qualitative datain order to validate the scope, validity, and reliability of a recently developed CLAM method and tool. A central part of the evaluation was the use of a modified pluralistic walkthroughthat was created to better suit the industrial domain. The evaluation of CLAM was performed in a demonstration factory focusing on manufacturing of street scooters and electric pedal cars. The modified walkthrough was conducted on the shop floor, during on-going assembly, which stresses the representativeness of a real-world setting of manufacturing. The modified pluralistic walkthrough functioned accurately as an evaluation method of CLAM and the exhaustive comments and data from the user representatives were very beneficial. The quantitative results show convicting evidence of CLAM’s utility for assessing cognitive load while the qualitative results indicate that some modifications have to be made in order to enhance the actual tool in order to avoid misinterpretations resulting in misleading outcomes.

1 - 36 of 36
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