1 - 7 of 7
rss atomLink to result list
Permanent link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
  • Tatipala, Sravan
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Wall, Johan
    Johansson, Christian
    Sigvant, Mats
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering. Volvo Cars.
    Data-driven modelling in the era of Industry 4.0: A case study of friction modelling in sheet metal forming simulations2018In: IOP Conference Series: Journal of Physics: Conference Series 1063 (2018) 012135, 2018, Vol. 1063Conference paper (Refereed)
    Abstract [en]

    With growing demands on quality of produced parts, concepts like zero-defect manufacturing are gaining increasing importance. As one of the means to achieve this, industries strive to attain the ability to control product/process parameters through connected manufacturing technologies and model-based control systems that utilize process/machine data for predicting optimum system conditions without human intervention. Present work demonstrates an automated approach to process in-line measured data of tribology conditions and incorporate it within sheet metal forming (SMF) simulations to enhance the prediction accuracy while reducing overall modelling effort. The automated procedure is realized using a client-server model with an in-house developed application as the server and numerical computing platform/commercial CAD software as clients. Firstly, the server launches the computing platform for processing measured data from the production line. Based on this analysis, the client then executes CAD software for modifying the blank model thereby enabling assignment of localized friction conditions. Finally, the modified blank geometry and accompanied friction values is incorporated into SMF simulations. The presented procedure reduces time required for setting up SMF simulations as well as improves the prediction accuracy. In addition to outlining suggestions for future work, paper concludes by discussing the importance of the presented procedure and its significance in the context of Industry 4.0.

  • Rondini, Alice
    et al.
    University of Bergamo, ITA.
    Matschewsky, Johannes
    Linköping University, SWE.
    Pezzotta, Giuditta
    University of Bergamo, ITA.
    Bertoni, Marco
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    A simplified approach towards customer and provider value in PSS for small and medium-sized enterprises2018In: 10th CIRP Conference on Industrial Product-Service Systems, IPS2 2018, 29-31 May 2018, Linköping, Sweden / [ed] Tomohiko Sakao, Mattias Lindahl, Yang Liu, Carl Dalhammar, Elsevier, 2018, Vol. 73, p. 61-66Conference paper (Refereed)
    Abstract [en]

    While the provision of PSS is becoming more and more common, the transition toward a servitized business model is still critical. This is particularly true for small and medium-sized enterprises (SMEs) due to their limited internal resources and ability to define a servitization strategy. A crucial aspect during this transition is the identification of the right solutions to be implemented into the business that must render high value capture for providers and create value for customers. While a literature review showed that a large number of evaluation methods are available, these are often complex and require substantial amounts of resources in order to be carried out. This paper aims at supporting companies in taking decisions during early design phases by proposing a method that combines two existing approaches: The EVA method and the ProVa method. The combined method simplifies the existing ones while aiming at an easy implementation and application in SMEs. It is composed of two steps, the first pursuing the identification of valuable concepts from both the customer and the provider perspective; the second pursuing an individual analysis of the components available for use in the concepts selected. The application of the simplified method in a student-case of a startup company seeking to enter the distributed mobility market highlights the ease of use of the method in rendering valuable PSS concepts and in evaluating its specific components. 

  • Angelova, Milena
    et al.
    Technical University of Sofia-branch Plovdiv, BUL.
    Vishnu Manasa, Devagiri
    Blekinge Institute of Technology, Faculty of Computing, Department of Computer Science and Engineering.
    Boeva, Veselka
    Blekinge Institute of Technology, Faculty of Computing, Department of Computer Science and Engineering.
    Linde, Peter
    Blekinge Institute of Technology, The Library.
    Lavesson, Niklas
    Blekinge Institute of Technology, Faculty of Computing, Department of Computer Science and Engineering.
    An Expertise Recommender SystemBased on Data from an InstitutionalRepository (DiVA)2018In: Proceedings of the 22nd edition of the International Conference on ELectronic PUBlishing, 2018Conference paper (Refereed)
    Abstract [en]

    Finding experts in academics is an important practical problem, e.g. recruiting reviewersfor reviewing conference, journal or project submissions, partner matching for researchproposals, finding relevant M. Sc. or Ph. D. supervisors etc. In this work, we discuss anexpertise recommender system that is built on data extracted from the Blekinge Instituteof Technology (BTH) instance of the institutional repository system DiVA (DigitalScientific Archive). DiVA is a publication and archiving platform for research publicationsand student essays used by 46 publicly funded universities and authorities in Sweden andthe rest of the Nordic countries (www.diva-portal.org). The DiVA classification system isbased on the Swedish Higher Education Authority (UKÄ) and the Statistic Sweden's (SCB)three levels classification system. Using the classification terms associated with studentM. Sc. and B. Sc. theses published in the DiVA platform, we have developed a prototypesystem which can be used to identify and recommend subject thesis supervisors inacademy.

  • Wickstrom, Hanna L.
    et al.
    Lund Univ, SWE.
    Oien, Rut Frank
    Blekinge Wound Healing Ctr, Karlshamn, SWE.
    Fagerstrom, Cecilia
    Blekinge Ctr Competence, Karlskrona, SWE.
    Anderberg, Peter
    Blekinge Institute of Technology, Faculty of Engineering, Department of Health. Blekinge Inst Technol, Dept Hlth, Karlskrona, Sweden..
    Jakobsson, Ulf
    Lund Univ, SWE.
    Midlov, Patrik J.
    Lund Univ, SWE.
    Comparing video consultation with inperson assessment for Swedish patients with hard-to-heal ulcers: registry-based studies of healing time and of waiting time2018In: BMJ Open, ISSN 2044-6055, E-ISSN 2044-6055, Vol. 8, no 2, article id e017623Article in journal (Refereed)
    Abstract [en]

    Objectives To investigate differences in ulcer healing time and waiting time between video consultation and inperson assessment for patients with hard-to-heal ulcers. Setting Patients treated at Blekinge Wound Healing Centre, a primary care centre covering the whole of Blekinge county (150 000 inhabitants), were compared with patients registered and treated according to the Registry of Ulcer Treatment, a Swedish national web-based quality registry. Participants In the study for analysing ulcer healing time, the study group consisted of 100 patients diagnosed through video consultation between October 2014 and September 2016. The control group for analysing healing time consisted of 1888 patients diagnosed through inperson assessment during the same period. In the study for analysing waiting time, the same study group (n=100) was compared with 100 patients diagnosed through inperson assessment. Primary and secondary outcome measures Differences in ulcer healing time were analysed using the log-rank test. Differences in waiting time were analysed using the Mann-Whitney U test. Results Median healing time was 59 days (95% CI 40 to 78) in the study group and 82 days (95% CI 75 to 89) in the control group (P<0.001). Median waiting time was 25 days (range: 1-83 days) in the study group and 32 days (range: 3-294 days) for patients diagnosed through inperson assessment (P=0.017). There were no significant differences between the study group and the control group regarding age, gender or ulcer size. Conclusions Healing time and waiting time were significantly shorter for patients diagnosed through video consultation compared with those diagnosed through inperson assessment.

  • Wiaderek, Krzysztof
    et al.
    Czestochowa University of Technology, POL.
    Rutkowska, Danuta
    Czestochowa University of Technology, POL.
    Rakus-Andersson, Elisabeth
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mathematics and Natural Sciences.
    Image Retrieval by Use of Linguistic Description in Databases2018In: Artificial Intelligence and Soft Computing, Part II / [ed] Rutkowski, L., Scherer, R., Korytkowski, M., Pedrycz, W., Tadeusiewicz, R., Zurada, J.M., Springer, 2018, Vol. 10842, p. 92-103Conference paper (Refereed)
    Abstract [en]

    In this paper, a new method of image retrieval is proposed. This concerns retrieving color digital images from a database that contains a specific linguistic description considered within the theory of fuzzy granulation and computing with words. The linguistic description is generated by use of the CIE chromaticity color model. The image retrieval is performed in different way depending on users' knowledge about the color image. Specific database queries can be formulated for the image retrieval.

  • Ghani, Zartashia
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Health.
    Jarl, Johan
    Lunds universitet, SWE.
    Sanmartin Berglund, Johan
    Blekinge Institute of Technology, Faculty of Engineering, Department of Health.
    Andersson, Martin
    Blekinge Institute of Technology, Faculty of Engineering, Department of Industrial Economics.
    Anderberg, Peter
    Blekinge Institute of Technology, Faculty of Engineering, Department of Health.
    The Cost Effectiveness of M-health Interventions for Older Adults: Protocol for a Systematic Review2018Manuscript (preprint) (Other academic)
    Abstract [en]

    Background: Many studies reported effectiveness of mhealth interventions targeting middle aged and older adults to improve healthcare delivery process, efficacy and management of chronic diseases. However, the knowledge about their cost-effectiveness is important to implement mhealth interventions at large scale for proper allocation of scarce resources. This systematic review will summarize the results from identified studies for the cost effectiveness of mhealth interventions aimed for middle aged and older adults.

    Method: mhealth interventions aimed to improve healthcare delivery process, efficacy and delivering training will be included in this systematic review. A comprehensive electronic search strategy will be used to identify health economic evaluations, published since 2007, and indexed in Pubmed, Scopus and CINAHL. The search strategy will include terms (and synonyms) for the following mhealth devices: mobile phone, smartphone, mhealth. Middle aged and older adults will be used to identify all mhealth interventions introduced to middle aged and older adults. Terms such as economic evaluation, cost effectiveness, cost utility etc will be used to identify economic evaluations of all mhealth interventions.

    Discussion: This systematic review will report evidence on cost effectiveness of mhealth interventions targeting middle aged and older adults.

  • Tatipala, Sravan
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Pilthammar, Johan
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering. Volvo Cars.
    Sigvant, Mats
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering. Volvo Cars.
    Wall, Johan
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Johansson, Christian
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Introductory study of sheet metal forming simulations to evaluate process robustness2018In: Journal of Physics: Conference Series (JPCS), Institute of Physics Publishing (IOPP), 2018., 2018Conference paper (Refereed)
    Abstract [en]

    The ability to control quality of a part is gaining increased importance with desires to achieve zero-defect manufacturing. Two significant factors affecting process robustness in production of deep drawn automotive parts are variations in material properties of the blanks and the tribology conditions of the process. It is imperative to understand how these factors influence the forming process in order to control the quality of a formed part. This paper presents a preliminary investigation on the front door inner of a Volvo XC90 using a simulation-based approach. The simulations investigate how variation of material and lubrication properties affect the numerical predictions of part quality. To create a realistic lubrication profile in simulations, data of pre-lube lubrication amount, which is measured from the blanking line, is used. Friction models with localized friction conditions are created using TriboForm and is incorporated into the simulations. Finally, the Autoform-Sigmaplus software module is used to create and vary parameters related to material and lubrication properties within a user defined range. On comparing and analysing the numerical investigation results, it is observed that a correlation between the lubrication profile and the predicted part quality exists. However, variation in material properties seems to have a low influence on the predicted part quality. The paper concludes by discussing the relevance of such investigations for improved part quality and proposing suggestions for future work.