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  • 1.
    Bergman Bruhn, Åsa
    et al.
    Dalarna University, School of Technology and Business Studies, Occupational science.
    Rydell, Alexis
    Dalarna University, School of Technology and Business Studies, Occupational science.
    Andersson, Ing-Marie
    Dalarna University, School of Technology and Business Studies, Occupational science.
    Lindahl, Cecilia
    RISE.
    Med stallet som arbetsplats: en studie om upplevelsen av attraktivt arbete på ridskolor.2019Conference paper (Refereed)
  • 2.
    Daniels, Maria
    Dalarna University, School of Technology and Business Studies, Occupational science. Dalarna University, School of Health and Social Studies.
    Inspirationsbenchmarking för förbättrad verksamhet för ABB Components i Ludvika2011Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 3.
    Eriksson, Per Erik
    Dalarna University, School of Humanities and Media Studies, Moving Image Production. Mälardalens högskola, Inbyggda system.
    Videography as Design Nexus: Critical Inquires into the Affordances and Efficacies of Live-action Video Instructions2018Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    This thesis is about live-action instructional videos (LAVs). By addressing design problems with respect to the how-to video genre, the thesis asks fundamental questions about mediated instructional communication efficacies and the factors that either obstruct or augment them. 

    The analysis presented in this thesis is based on the notion that videography is a design nexus and key focal point of the connections that make live-action video instructional efforts possible. This Design Nexus is explored by defining and illuminating key ontological dimensions, medium specificities and the video users’ cognitive capacities. This is to acknowledge that the users of instructions in this thesis are center stage, both as biological and cultural beings.

    The methods used in this thesis and its associated papers are eye-tracking, video observations, questionnaires, self-reports, focus group interviews and YouTube analytics. Hence, both numerical data and non-numerical data are analyzed in this study.

    The results of the analyses indicate that pre-production planning is key in live-action video instructional endeavors, but not at the expense of the videographer’s status as designer. Moreover, the analyses show that users’ cognitive processing and visual decoding depend on the power of the live-action format to show actual human behavior and action. Other presented evidence seems to infer that LAV-instructions are a little less demanding if users apply a focused decoding style when interacting with them. Nevertheless, physiological engagement of this kind is likely not to fully compensate for users’ psychological engagement.

    This thesis contributes to a more comprehensive understanding of humans’ abilities to interpret the actions of others via medial means. By relating this to video medium-specific affordances, this thesis also furthers important efficacy distinctions and boundary conditions. This understanding is considered important for live-action video makers and designers of visual instructions as well as scholars who need to develop better methods to assess users’ behavioral engagement when they interact with digital instructional media.

  • 4.
    Hedlund, Ann
    et al.
    Dalarna University, School of Technology and Business Studies, Occupational science.
    Andersson, Ing-Marie
    Dalarna University, School of Technology and Business Studies, Occupational science.
    Bullerförekomst vid sönderdelning av skogsbränsle2013Report (Other academic)
    Abstract [sv]

    Syftet med denna studie är att öka kunskapen om bullerexponering för omgivning och förare vid sönderdelning av skogsbränsle till flis. Sammanlagt har sex fallstudier genomförts, tre skotare, två lastbilar och en mobil anläggning. Fallen har valts med syftet att representera olika typer av sönderdelningsekipage och teknik. Studierna har genomförts i Dalarnas, Stockholms och Gävleborgs län. Bullerexponering för omgivning och förare i samband med sönderdelning till flis har undersökts med föreskrivna metoder.

    Det är stora skillnader på bullerexponering för förarna av de olika ekipagen. En skotarförare har daglig bullerexponering under såväl insats- som gränsvärde. Två förare (en skotarförare och en lastbilsförare) överskred insatsvärde, men var under gränsvärdet. Övriga förares bullerexponering överskred gränsvärdet.

    Alla maskiner har bullernivåer över 40/45 dB(A) på 200 meters avstånd, vilket överstiger acceptabla nivåer dagtid för områden med fritidsbebyggelse och fritidsområden. Endast ett av ekipagen (en skotare) hade bullernivåer på 200 meters avstånd i nivå med riktlinjer för områden med bostäder för permanent boende.  Övriga ekipage hade högre värden.

    De slutsatser som kan göras från denna studie är:

    • Merparten av förare vid sönderdelning av skogsbränsle till flis exponeras för dagliga bullernivåer som kräver åtgärder.
    • Bullernivåerna varierar mellan olika typer av ekipage för sönderdelning av skogsbränsle till flis.

    Studerade ekipage har högre värden för buller på 200 meters avstånd till bostäder, arbetslokaler och friluftsområden än vad som rekommenderas.

  • 5.
    Hedlund, Ann
    et al.
    Dalarna University, School of Technology and Business Studies, Occupational science.
    Andersson, Ing-Marie
    Dalarna University, School of Technology and Business Studies, Industrial Engineering and Management.
    Damm- och mögelförekomst vid hantering av skogsbränsle2013Report (Other academic)
    Abstract [sv]

    Tidigare studier har indikerat att exponering för trädamm och mögeldamm vid hantering av GROT (grenar och toppar) kan vara en hälsorisk. Syftet med denna studie är att ytterligare öka kunskapen om dammförhållanden inom skogsenergibranschen. Mer specifikt är målet att genom fallstudier studera dammförekomst vid hantering av GROT samt stubbar. Enstaka fallstudier av mögelförekomst i förarmiljön inkluderas.

    Sammanlagt har 19 fallstudier genomförts hos tio olika företag i Dalarna, Västmanland, ödermanland, Uppland, och Närke. Totaldamm har mätts med filterprovtagning inne i hytten och utanför hytten. Mögel har mätts med filterprovtagning inne i hytten.

    Sammanfattningsvis kan konstateras att vid samtliga fall av skotning uppmättes förhöjda dammnivåer utomhus. Högst dammnivåer uppmättes vid sönderdelning av GROT vid olika årstider. Förare som utförde arbete utanför hytten exponerades för högre dammnivåer än de som enbart arbetade inifrån hytten. De enstaka fallstudierna av mögel visade på relativt låga värden av mögelsporer. Arbetsmomentet såsom byte av knivar indikerade ökade mögelhalter.

    Slutsatser från denna studie är:

    • Inga höga damm och mögelhalter har uppmätts i dessa fallstudier. Då väderförhållandena innebar mer nederbörd än i genomsnitt är resultaten inte generaliserbara.
    • Förhöjda dammhalter uppmättes då förare utfört service och underhållsarbete utanför hytten.
    • I studerade fall där dammängden utanför hytten var förhöjd har inga dammhalter mätts upp inne i hytterna, vilket tyder på bra luftfilter.

    Rekommendationer till förare är att:

    • Regelbundet byta hyttens luftfilter och att hålla fönster och dörrar stängda för att förhindra dammexponering inne i hytten.
    • Vid service- och underhållsarbete ska föraren i möjligaste mån undvika att använda tryckluft. Andningsskydd bör användas under de korta moment som tryckluft används.
  • 6.
    Hedlund, Ann
    et al.
    Dalarna University, School of Technology and Business Studies, Occupational science.
    Andersson, Ing-Marie
    Förarens arbetsmiljö2015In: Skogens energi – en källa till hållbar framtid: Sammanfattande rapport från Effektivare Skogsbränslesystem 2011-2015 / [ed] C. H. Palmér & M. Iwarsson Wide, Uppsala: Skogforsk , 2015, p. 82-83Chapter in book (Other (popular science, discussion, etc.))
    Abstract [sv]

    Sedan 2009 har Tema Arbetsliv vid Högskolan Dalarna arbetat med arbetsmiljöfrågor vid hantering av skogsbränsle. I det tidigare ESS-programmet studerades bland annat kunskapsutbyte mellan entreprenörer, skogsenergibranschens attraktivitet, beställaransvar, mögeldamm och systematiskt arbetsmiljöarbete. Under programperioden 2011–2014 har fördjupade studier genomförts kring buller, damm och mögel, helkroppsvibrationer samt service- och reparationsarbete. Dessutom har förarnas uppfattning om arbetsförhållanden och arbetsmiljörisker följts upp i en enkät.  Resultaten från dessa studier redovisas här.

  • 7.
    Hedlund, Ann
    et al.
    Dalarna University, School of Technology and Business Studies, Occupational science.
    Andersson, Ing-Marie
    Dalarna University, School of Technology and Business Studies, Occupational science.
    Björheden, Rolf
    Skogforsk.
    Skogsbränslehantering: En arbetsmiljöhandledning2012Report (Other (popular science, discussion, etc.))
    Abstract [sv]

    Denna handledning behandlar arbetsmiljön vid skördning, transport, och sönderdelning av sortimenten GROT, stubbar och klenskog. Den vänder sig till nuvarande och blivande maskinförare och arbetsledare.

  • 8.
    Hedlund, Ann
    et al.
    Dalarna University, School of Technology and Business Studies, Occupational science.
    Åteg, Mattias
    Dalarna University, School of Technology and Business Studies, Occupational science.
    Andersson, Ing-Marie
    Dalarna University, School of Technology and Business Studies, Occupational science.
    Rosén, Gunnar
    Dalarna University, School of Technology and Business Studies, Occupational science.
    Assessing motivation for work environment improvements: internal consistency, reliability and factorial structure2010In: Journal of Safety Research, ISSN 0022-4375, E-ISSN 1879-1247, Vol. 41, no 2, p. 145-151Article in journal (Refereed)
    Abstract [en]

    Problem. Workers’ motivation to actively take part in improvements to the work environment is assumed to be important for the efficiency of investments for that purpose. That gives rise to the need for a tool to measure this motivation.

    Metho.d A questionnaire to measure motivation for improvements to the work environment has been designed. Internal consistency and test-retest reliability of the domains of the questionnaire has been measured, and the factorial structure has been explored, from the answers of 113 employees. Results The internal consistency is high (0.94), as well as the correlation for the total score (0.84). Three factors are identified accounting for 61.6% of the total variance.

    Discussion. The questionnaire can be a useful tool in improving intervention methods. The expectation is that the tool thereby can be useful, particularly with the aim of improving efficiency of companies’ investments for work environment improvements.

  • 9.
    Kenger, Patrick
    et al.
    Dalarna University, School of Technology and Business Studies, Mechanical Engineering.
    Erixon, Gunnar
    Dalarna University, School of Technology and Business Studies, Mechanical Engineering.
    Studies of Design and Assembly Defects on Integrated and Modular Architectures2005In: 15th International Conference on Engineering Design, ICED 05, Melbourne: International Conference on Engineering Design (ICED) , 2005Conference paper (Refereed)
    Abstract [en]

    It is known that despite companies’ efforts to improve the quality of their products, design and assembly defects results in large repair costs both in terms of repair and providing feedback to the origin of the defect. The purpose of this paper is to study these types of defects and the defect rates in design and assembly. The paper presents a web based questionnaire answered by 29 companies. The result shows that the defect rate (defects per product) spanned from 0.01 to 10. Also, design and assembly defects covered 46%, 23% respectively, of all occurred defects. A case study is also presented, performed at a company who recently implemented a modular architecture. In this company, defects from 5 700 integrated product architectures are compared with defects from 431 modular architectures. The average defect rate increased by 21.5% – from 0.65 to 0.79 – when a more modular architecture has been implemented. Furthermore, the study showed that the assembly defects have decreased while the design defects increased. The results presented in this paper will also support the development of the MPV (Module Property Verification) method which is briefly described.

  • 10.
    Kenger, Patrik
    Dalarna University, School of Technology and Business Studies, Mechanical Engineering.
    Beneftis of modularity and module level tests2005In: Emerging solutions for future manufacturing systems, International Federation for Information Processing., 2005, Vol. 159, p. 379-386Conference paper (Refereed)
    Abstract [en]

    Many companies implement a modular architecture to support the need to create more variants with less effort. Although the modular architecture has many benefits, the tests to detect any defects become a major challenge. However, a modular architecture with defined functional elements seems beneficial to test at module level, so called MPV (Module Property Verification). This paper presents studies from 29 companies with the purpose of showing trends in the occurrence of defects and how these can support the MPV.

  • 11.
    Kenger, Patrik
    Dalarna University, School of Technology and Business Studies, Mechanical Engineering. KTH, Industriell produktion.
    Module property verification: A method to plan and perform quality verifications in modular architectures2006Doctoral thesis, monograph (Other academic)
    Abstract [en]

    Modular product architectures have generated numerous benefits for companies in terms of cost, lead-time and quality. The defined interfaces and the module’s properties decrease the effort to develop new product variants, and provide an opportunity to perform parallel tasks in design, manufacturing and assembly. The background of this thesis is that companies perform verifications (tests, inspections and controls) of products late, when most of the parts have been assembled. This extends the lead-time to delivery and ruins benefits from a modular product architecture; specifically when the verifications are extensive and the frequency of detected defects is high. Due to the number of product variants obtained from the modular product architecture, verifications must handle a wide range of equipment, instructions and goal values to ensure that high quality products can be delivered. As a result, the total benefits from a modular product architecture are difficult to achieve.

    This thesis describes a method for planning and performing verifications within a modular product architecture. The method supports companies by utilizing the defined modules for verifications already at module level, so called MPV (Module Property Verification). With MPV, defects are detected at an earlier point, compared to verification of a complete product, and the number of verifications is decreased.

    The MPV method is built up of three phases. In Phase A, candidate modules are evaluated on the basis of costs and lead-time of the verifications and the repair of defects. An MPV-index is obtained which quantifies the module and indicates if the module should be verified at product level or by MPV. In Phase B, the interface interaction between the modules is evaluated, as well as the distribution of properties among the modules. The purpose is to evaluate the extent to which supplementary verifications at product level is needed. Phase C supports a selection of the final verification strategy. The cost and lead-time for the supplementary verifications are considered together with the results from Phase A and B.

    The MPV method is based on a set of qualitative and quantitative measures and tools which provide an overview and support the achievement of cost and time efficient company specific verifications. A practical application in industry shows how the MPV method can be used, and the subsequent benefits

  • 12.
    Kenger, Patrik
    et al.
    Dalarna University, School of Technology and Business Studies, Mechanical Engineering.
    Bergdahl, Anders
    Product verification and defect repair - status and considerations2004In: 2nd International Precision Assembly Seminar, IPAS, Bad Hofgastein, Austria, 2004Conference paper (Refereed)
    Abstract [en]

    Product verifications have become a cost-intensive and time-consuming aspect of modern electronics production, but with the onset of an ever-increasing miniaturisation, these aspects will become even more cumbersome. One may also go as far as to point out that certain precision assembly, such as within the biomedical sector, is legally bound to have 0 defects within production. Since miniaturisation and precision assembly will soon become a part of almost any product, the verifications phases of assembly need to be optimised in both functionality and cost. Another aspect relates to the stability and robustness of processes, a pre-requisite for flexibility. Furthermore, as the re-engineering cycle becomes ever more important, all information gathered within the ongoing process becomes vital. In view of these points, product, or process verification may be assumed to be an important and integral part of precision assembly. In this paper, product verification is defined as the process of determining whether or not the products, at a given phase in the life-cycle, fulfil the established specifications. Since the product is given its final form and function in the assembly, the product verification normally takes place somewhere in the assembly line which is the focus for this paper.

  • 13.
    Kenger, Patrik
    et al.
    Dalarna University, School of Technology and Business Studies, Mechanical Engineering.
    Bergdahl, Anders
    Onori, Mauro
    Modular Product Verifications Based on Design for Assembly2005In: International Forum on Design for Manufacture and Assembly, Providence - Warwick, Rhode Island, USA, 2005Conference paper (Refereed)
    Abstract [en]

    The desire to conquer markets through advanced product design and trendy business strategies are still predominant approaches in industry today. In fact, product development has acquired an ever more central role in the strategic planning of companies, and it has extended its influence to R&D funding levels as well. It is not surprising that many national R&D project frameworks within the EU today are dominated by product development topics, leaving production engineering, robotics, and systems on the sidelines. The reasons may be many but, unfortunately, the link between product development and the production processes they cater for are seldom treated in depth. The issue dealt with in this article relates to how product development is applied in order to attain the required production quality levels a company may desire, as well as how one may counter assembly defects and deviations through quantifiable design approaches. It is recognized that product verifications (tests, inspections, etc.) are necessary, but the application of these tactics often result in lead-time extensions and increased costs. Modular architectures improve this by simplifying the verification of the assembled product at module level. Furthermore, since Design for Assembly (DFA) has shown the possibility to identify defective assemblies, it may be possible to detect potential assembly defects already in the product and module design phase. The intention of this paper is to discuss and describe the link between verifications of modular architectures, defects and design for assembly. The paper is based on literature and case studies; tables and diagrams are included with the intention of increasing understanding of the relation between poor designs, defects and product verifications.

  • 14.
    Kenger, Patrik
    et al.
    Dalarna University, School of Technology and Business Studies, Mechanical Engineering.
    Coda, Mariana
    An approach to evaluate product verifications2004In: IV Internatioal Congress on Mechanical Engineering Technologies, Varna, Bulgaria, 2004Conference paper (Refereed)
    Abstract [en]

    Companies implement a module product assortment as a part of their strategy to, among others, shorten lead-times, increase the product quality and to create more product variants with fever parts. However, the increased number of variants becomes a challenging task for the personnel responsible for the product verifications. By implementing verifications at module level, so called MPV (Module Property Verification) several advantages ensue. The advantages is not only a decrease in cost of verifications, but also a decrease in repair times, occupied space, storages with spare parts, and repair tools. Further, MPV also give an increased product quality due to an increased understanding of which defects that may occur. As an approach to implement MPV, this paper discusses defects and verification processes based on a study at a Swedish company. It also describes a matrix which is used to map relations between company specific cost drivers and so called verification factors. The matrix may indicate cost drivers which have a large impact on the total cost of product verifications.

  • 15.
    Kenger, Patrik
    et al.
    Dalarna University, School of Technology and Business Studies, Mechanical Engineering.
    Erixon, Gunnar
    Dalarna University, School of Technology and Business Studies, Mechanical Engineering.
    Lennartsson, S
    Module Property Verification: A Conceptual Framework to Perform Product Verifications at Module level2003In: The 14th International Conference on Engineering Design, Stockholm, 2003Conference paper (Refereed)
  • 16.
    Kenger, Patrik
    et al.
    Dalarna University, School of Technology and Business Studies, Mechanical Engineering.
    Hagström, Lina
    Integrated Product Development in Truck Industry - A Case Study on Product Development Processes2003Report (Other academic)
    Abstract [en]

    This paper presents the result from a case study at Scania on product development processes. The objective with the case study was to gather information on Scania’s product development process (PDP) including the use of CAD and simulation tools, and project work. The objective was also to find any deviations or different interpretations among the employees on the PDP. To gather the information, semi-structured tape-recorded interviews have been used to ensure that individual interpretations from the interviewees could be gathered. Scania uses a defined and structured PDP which facilitates concurrent and cross-functional work. The PDP is implemented and followed to various degrees. The newly employed personnel may have difficulties with communication, both to find and to give information. Although, newly graduated personnel may find it easier to adapt to changes, and also to use a structured process which they have studied at universities. It was also known during the case study that the PDP is a major support for the newly employed personnel, which in turn decreases the time to get into the same working process as the more experienced personnel. Employees with decades of experience know the right sources from which to both give and gather information. Also, the terminology and definitions in the product development process may not be used as intended. This makes it difficult for other project members or teams who need to interpret the information received. At the same time, the routines among the more experienced personnel, which have been set-up throughout the years, make them more inflexible in adapting changes. The findings in the case study as well as challenges with implementing the PDP are known to Scania and are a part of the continuing work with improvement.

  • 17.
    Kenger, Patrik
    et al.
    Dalarna University, School of Technology and Business Studies, Mechanical Engineering.
    Onori, M
    Module Property Analysis in the Assembly Process2003In: Proceedings of the International Precision Assembly Seminar, Bad Hofgastein, Austria, 2003Conference paper (Refereed)
  • 18.
    Pejryd, Lars
    et al.
    Örebro University.
    Larsson, Joakim
    Örebro University.
    Olsson, Mikael
    Dalarna University, School of Technology and Business Studies, Materials Technology.
    Process monitoring of wire drawing using vibration sensoring2017In: CIRP - Journal of Manufacturing Science and Technology, ISSN 1755-5817, E-ISSN 1878-0016, Vol. 18, p. 65-74Article in journal (Refereed)
    Abstract [en]

    Automating the detection of processing conditions that may lead to defects in the wire during the wire drawing process is of high interest to the industry. Current practise is based primarily on operator experience. Increasing demands on product quality and process robustness emphasises the need for development of robust in-process detection methods. This work is focusing on investigating the potential of using vibration monitoring to detect process deficiencies or variations that may lead to defects in the product. Wire drawing of a carbon steel in different lubricating situations was used to investigate vibration signal response together with force measurements and surface investigation of the wire product. The results show that vibration measurement is capable of detecting loss of lubrication that leads to poor surface quality of the wire.

  • 19.
    Rydell, Alexis
    et al.
    Dalarna University, School of Technology and Business Studies, Occupational science.
    Andersson, Ing-Marie
    Dalarna University, School of Technology and Business Studies, Occupational science.
    Work environment investments: outcomes from three cases2019In: International Journal of Occupational Safety and Ergonomics, ISSN 1080-3548, E-ISSN 2376-9130, Vol. 25, no 1, p. 138-147Article in journal (Refereed)
    Abstract [en]

    Work environment investments are important in order to create a healthy and safe workplace. This article presents findings from a seven-step interventions process aimed at examining and following-up work environment investments in small and medium sized enterprises (SMEs), with a particular focus on air contaminants. Three different cases were analyzed and included in the study: (i) an educational center for welding; (ii) a paint station in furniture manufacturing; and (iii) a joinery in furniture manufacturing. The result shows that the work environment investments were highly appreciated by the employees and managers, but at the same time the investment could be optimized through markedly decreased exposure levels for the worker. Factors such as follow-ups of the investment, education and training in how to use the equipment, workers involvement in the process and leadership engagement are important in order to optimize work environment investments.

  • 20. Thevenot, Henri
    et al.
    Simpson, Timothy
    Jiao, Roger
    Kenger, Patrick
    Dalarna University, School of Technology and Business Studies, Mechanical Engineering.
    Product platforming for a global marketplace2008In: Journal of engineering design (Print), ISSN 0954-4828, E-ISSN 1466-1837, Vol. 19, no 6, p. 461-463Article in journal (Refereed)
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