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  • 51.
    Chen, Hao
    et al.
    Kunming University of Science & Technology, CHI.
    Li, Xuechao
    Kunming University of Science & Technology, CHI.
    Wan, Rundong
    Kunming University of Science & Technology, CHI.
    Kao-Walter, Sharon
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Lei, Ying
    Anhui University of Technology, CHI.
    Leng, Chongyan
    Kunming University of Science & Technology, CHI.
    A DFT study on modification mechanism of (N,S) interstitial co-doped rutile TiO22018Inngår i: Chemical Physics Letters, ISSN 0009-2614, E-ISSN 1873-4448, Vol. 695, s. 8-18Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    To obtain a more efficient (N,S) co-doping scheme, we systematically analyze the geometrical parameters, density of states, charge densities, relative dielectric functions and UV–Vis absorption spectra for pure, N/S substitution/interstitial doped and (N,S) substitution/interstitial co-doped TiO2 by using density functional calculations. Compared with (N,S) substitution co-doping, (N,S) interstitial co-doping TiO2 exhibits a more obvious red-shift of absorption edge, because of the band gap is further reduced. Furthermore, there are shallow impurity levels coupling with the top of valence band. The calculated UV–Vis absorption spectra illustrate that (N,S) interstitial co-doping TiO2 has much higher photocatalytic activity in the visible light region. © 2018

  • 52.
    Chezan, Tony
    et al.
    Tata Steel, NLD.
    Khandeparkar, Tushar
    Tata Steel, NLD.
    Van Beeck, Jeroehn
    Tata Steel, NLD.
    Sigvant, Mats
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Strategies for increasing the accuracy of sheet metal forming finite element models2018Inngår i: Journal of Physics: Conference Series, Institute of Physics Publishing , 2018, nr 1Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Accurate modelling of sheet metal forming can contribute significantly to reduction of lead time and development costs in manufacturing industries. The current way to improve the finite element model accuracy is to combine advanced constitutive material models and advanced tribological models. For model validation purposes the geometry of the forming tools needs to be updated and the most relevant parameters of the forming press needs to be incorporated. The addition of a simple and easier to control model test can offer additional information on difficult to characterize parameters of the industrial process. The industrial validation case presented in this paper demonstrates that the Tata Steel constitutive material model has similar prediction capability as the state of the art material model used at Volvo Cars for regular process development for automotive parts production. In both industrial and model tests the tribological system appears to affect significantly the overall model accuracy. The model tests suggests that further work is needed in order to improve the tribological model description at high contact pressure and high strain levels. © 2018 Institute of Physics Publishing. All rights reserved.

  • 53.
    Chirumalla, Koteshwar
    et al.
    Luleå tekniska universitet.
    Bertoni, Marco
    Johansson, Christian
    Luleå tekniska universitet.
    Experience feedback using social media: from the product lifecycle phases to the design practices2013Inngår i: Product-Service Integration for Sustainable Solutions: Proceedings of the 5th CIRP International Conference on Industrial Product-Service Systems / [ed] Horst Meier, Berlin, Germany, 2013, Vol. 5, s. 459-471, artikkel-id 043Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Many companies have been using lessons learned practices as one oftheir key knowledge management initiatives to capitalize on past experiences.For product development companies, learning from product lifecycle phasesgives a true competitive advantage to improve the next generation of products.However, companies are still struggling in capturing and sharing lessonslearned and applying them in new situations. Based on this consideration, thepaper proposes a video-based approach–using social media technologies–as away to leverage continuous capturing and sharing lessons learned from productlifecycle phases to design practices. The paper presents the findings of a casestudy within the aerospace industry, which investigates the current industrialpractices with regard to experience feedback, and illustrates the implementationof a video-based approach. Further, the conceptual mock-up of video-based lessons learned sharing portal and its social platform that are aimed to support the design practices are illustrated.

  • 54. Chirumalla, Koteshwar
    et al.
    Larsson, Andreas
    Luleå University of Technology.
    Bertoni, Marco
    Luleå University of Technology.
    Larsson, Tobias
    Luleå University of Technology.
    Knowledge sharing across boundaries - Web 2.0 and product-service system development2011Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In recent years there has been a growing interest among product development organizations to capitalize on engineering knowledge as their core competitive advantage for innovation. Capturing, storing, retrieval, sharing and reusing of engineering knowledge from a wide range of enterprise memory systems have become crucial activities of knowledge management practice in competitive organizations. In light of a changing and dynamic enterprise definition, including a move towards Product-Service System (PSS) development, this paper discusses some of the limitations of current enterprise systems in reusing engineering knowledge across functional and corporate boundaries. Further, the paper illustrates how Web 2.0-based collaborative technologies can leverage cross-functional knowledge for new PSS development projects through an open, bottom-up, and collective sense-making approach to knowledge management.

  • 55.
    Chowdhery, Syed Azad
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Bertoni, Marco
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Data-driven value assessment of packaging solutions2018Inngår i: IFAC PAPERSONLINE, Elsevier, 2018, Vol. 51, nr 11, s. 1119-1124, artikkel-id No. 11Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Research in Product Service Systems design increasingly focuses on how to develop ‘capabilities’ for assessing the value of solutions already in  a design project fuzzy front end. A datadriven approach shall then guide engineers in the process of identifying what to develop, and not merely to verify if a solution meets (or not) performance requirements. This process of frontloading problem identification and solution generation activities with models is of high interest to raise quality and lower risk and cost for the development work. The objective of the paper is to explore the use of a data-driven approach to enable value prediction of packaging material configurations in early design. Its main objective is to present a methodological approach and a framework to connect high-level aspects of customer value with simulations and analysis conducted on the mechanical properties of packaging material.

  • 56.
    Chowdhery, Syed Azad
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Bertoni, Marco
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Modeling resale value of road compaction equipment: a data mining approach2018Inngår i: IFAC PAPERSONLINE, Elsevier, 2018, Vol. 51, nr 11, s. 1101-1106, artikkel-id no.11Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Resale value is an important aspect to be addressed when companies aim to shift from one-sale models to Product Service Systems (PSS). In the initial stages of the PSS design process, it is beneficial to predict how the mechanical features of the PSS hardware will impact resale value, so to orient business strategy decisions accordingly. The objective of this work is to propose a methodology to model the resale value of road compaction equipment using data mining techniques. By scrapping and merging data sets from the machine manufacturer and from dealers of second-hand machines, the work discusses how the derived correlations may be used to populate value models for early stage decision making.

  • 57.
    Dannemyr, Magnus
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Analys av processer och verktyg för ärendehantering vid Saab Bofors Dynamics AB, Underwater Systems eftermarknad.2014Oppgave
    Abstract [sv]

    Försvarsindustrin är en industri med många tekniskt avancerade och dyra produkter. Produkterna har många gånger en lång utvecklingstid och kunderna investerar stora belopp vid anskaffning av ny materiel. Redan idag finns det stora affärsmöjligheter kring eftermarknad för dessa produkter. Men sjunkande försvarsbudget och minskat anslag till materialanskaffning innebär en risk för färre stora order. Detta öppnar för möjlighet till nya affärsmodeller och strategier kring eftermarknaden. Ett pilotprojekt inom offentlig-privat samverkan, OPS, rörande flygtid med skolflygplanet SK 60 som tidigare genomförts visar på att det finns stora besparingsmöjligheter för kunden med denna affärsmodell. Syftet med detta arbete är att genomföra en nulägesanalys av de verktyg och processer som används för kommunikation och hantering av ärenden vid eftermarknadsavdelningen, In Service Support - ISS, på Saab Bofors Dynamics AB, SBD, Underwater systems. Resultatet av nulägesanalysen skall ligga till grund för förslag till förbättringar och effektiviseringar för ISS-avdelningen. Målsättningen med förbättringarna är att ge affärsledingen bättre möjlighet till överblick och uppföljning av affärerna. Samt möjlighet att utveckla affärsmöjligheter för att öka omsättningen och lönsamheten inom eftermarknaden. Nulägesanalysen visar att ISS-avdelningen saknar fastställda gemensamma processer för hantering av eftermarknadsärenden. Det finns heller inget gemensamt verktyg för hantering och uppföljning av dessa eftermarknadsärenden inom SBD. Det stödverktyg som är framtaget av Saab Security and Defense Solutions, SDS, för att fungera som ett Saab-gemensamt verktyg för hantering av beställningar innebär ett ökat administrativt arbete utan att tillföra något mervärde för SBD. För att underlätta och effektivisera arbetet för ISS-avdelningens personal bör man således se över och standardisera processerna för ärendehantering. Ett gemensamt verktyg för hantering av ärenden och kommunikation med kunden bör även det införas. Verktyget bör om möjligt sammankoppla övriga IT-stödsystem som används inom SBD, detta för att minska den manuella hanteringen kring ärendena.

  • 58. Drugge, Lars
    et al.
    Larsson, Tobias
    Division of Computer Aided Design, Luleå University of Technolo.
    Stensson, Annika
    Modelling and simulation of catenary-pantograph interaction2000Inngår i: Vehicle System Dynamics, ISSN 0042-3114, E-ISSN 1744-5159, Vol. 33, nr suppl, s. 490-501Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Modelling and simulation of the dynamic behaviour of catenary-pantograph interaction is an important part when assessing the capability of a current collection system for railway traffic. The large variation in infrastructure characteristics in different countries and railway companies, different types of traffic, designs of pantographs etc. makes it almost impossible to develop a final simulation model of such a system. Instead, it would be favourable to have a tool that has the ability to set up models of such systems, choose relevant detail of the models, run simulations and finally visualize the results. To make the tool useful for engineers, design experts as well as simulation experts, the functionality of the tool must be worked out. Aspects on computer simulation such as developed models, simulation methods and computer tools are presented. The aim is to develop a scenario that considers different designs, models, solution methods and user levels. The scenario focuses on how to structure the use of simulation of dynamics in catenary-pantograph development. A scenario is sketched built on different user levels, a modular structure and a structure for information management

  • 59. Dubkov, Alexander
    et al.
    Rudenko, Oleg
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Gurbatov, Sergey
    Probability characteristics of nonlinear dynamical systems driven by delta -pulse noise2016Inngår i: Physical Review E. Statistical, Nonlinear, and Soft Matter Physics, ISSN 1539-3755, E-ISSN 1550-2376, Vol. 93, nr 6, artikkel-id 062125Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    For a nonlinear dynamical system described by the first-order differential equation with Poisson white noise having exponentially distributed amplitudes of δ pulses, some exact results for the stationary probability density function are derived from the Kolmogorov-Feller equation using the inverse differential operator. Specifically, we examine the "effect of normalization" of non-Gaussian noise by a linear system and the steady-state probability density function of particle velocity in the medium with Coulomb friction. Next, the general formulas for the probability distribution of the system perturbed by a non-Poisson δ-pulse train are derived using an analysis of system trajectories between stimuli. As an example, overdamped particle motion in the bistable quadratic-cubic potential under the action of the periodic δ-pulse train is analyzed in detail. The probability density function and the mean value of the particle position together with average characteristics of the first switching time from one stable state to another are found in the framework of the fast relaxation approximation. © 2016 American Physical Society.

  • 60.
    Eckert, Claudia
    et al.
    The Open University, GBR.
    Isaksson, Ola
    Chalmers University of Technology, SWE.
    Hallstedt, Sophie
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för strategisk hållbar utveckling.
    Malmqvist, Johan
    Chalmers University of Technology, SWE.
    Öhrwall Rönnbäck, Anna
    Luleå University of Technology, SWE.
    Panarotto, Massimo
    Chalmers University of Technology, SWE.
    Industry Trends to 20402019Inngår i: Proceedings of the Design Society: International Conference on Engineering Design 2019, Cambridge University Press, 2019, Vol. 1, s. 2121-2128Konferansepaper (Fagfellevurdert)
  • 61.
    Edvardsson, Erik
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för industriell ekonomi.
    Does organizational identification, being a manager and complexity predict level of engagement?2015Independent thesis Advanced level (degree of Master (One Year))Oppgave
    Abstract [en]

    Employee engagement is of great interest for leaders. It is not surprising that leaders seek ways to influence, manage and enhance level of engagement among its employees. Instead of asking directly how engaged their workforce is, leaders often ask questions on related constructs to engagement. The objective of this research is threefold. First is to determine if organizational identification (OID) is a predictor of engagement. Second is to conclude if being a manager with direct reports predicts higher level of engagement versus non-managers. Third is to decide if complexity in an organization has a moderating contextual effect on the relationships between employee engagement, employee OID and the role as a manager with direct reports. This re-search contributes to the established theories by testing a theoretical model with variables not found to be tested empirically together before. Data was collected in a survey with 168 respondents. The validity and reliability of the data was good, upon two multiple regression analyses were completed in order to test three hypotheses. Results show significant support for two of three hypotheses. First, high employee OID predicts high employee engagement (p-value 0,000 significant at 0,05 level). This is a complement to existing literature. Leaders can practically measure OID if they are interested in understanding and predicting level of engagement in their workforce. Second, managers with direct reports predicts higher engagement versus non-managers (p-value 0,021 significant at 0,05 level). This research does not answer why such difference is found, but an analysis is provided from both a manager’s and a subordinate’s view. Third, an employee (manager or non-manager) who spend a high percentage of time in meetings requested/organized by others does not make the relationship between OID and engagement weaker (p-value 0,440 not significant at 0,05 level). This study also indicates that most managers and non-managers spend less than 30% of their work week in meetings requested/organized by someone else. This speaks for a majority of both managers and non-managers are in control over the majority of their time during a working week.

  • 62.
    Ekholm, Robin
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Lösningar för att eliminera utsläpp av mikroplaster från plastindustrin2019Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    Microplastics is a growing problem for the environment and the risk that microplastics reaches our food and water is constantly increasing. Microplastics also affects animal life and it is more and more common that fishes, birds and even whales dies because of malnutrition since their stomachs are full of microplastics. The purpose of this project is to eliminate the generation and spreading of microplastics from the plastic industry. This is done by developing a method to locate where microplastics is generated and finding solutions on how they can be contained. The project has been conducted in collaboration with Tarkett Ronneby where a mapping of their facilities has been made, showing where they generate and spreads microplastics. The project has also included generating ideas and solution on how to solve the issues with microplastics at Tarkett Ronneby and other plastic industries. The method on how to eliminate the spread of microplastics from the plastic industry consists of ten different steps. The method including different protocols and a step by step template including everything from finding where microplastics are generated to implement solutions to eliminate the spread of microplastics. This method can be used not only by Tarkett Ronneby but also on other companies and factories with similar production and problems. 

  • 63.
    El-Abdouni, Nori
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    En flödesanalys på ett livsmedelsföretag för ett effektivare flöde2014Oppgave
    Abstract [sv]

    Denna studie är utförd på ett företag i Helsingborg som heter Abdon Finax AB. Företaget startade med mjöltillverkning för att sedan introducera müslin till Sverige. Sedan dess har bolaget fortsatt växa. I dagens samhälle går utvecklingen fort fram. Globaliseringen innebär att konkurrensen ökar och företag tvingas att tävla med varandra om kunderna, vilka ständigt söker bättre kvalitet, lägre kostnader samt kortare ledtider. Detta samtidigt som företagen försöker tjäna mer pengar genom ökad lönsamhet genom bland annat effektivare flöden. På så sätt kan företaget minimera kostnaderna för att kunderna ska kunna tillgodoses samtidigt som företagen tjänar på det. ’’Ibland måste man vara liten för att springa om de stora’’ är ett av Finax valspråk. För att fortsätta ha chansen att springa om de stora krävs flexibilitet i produktionen för att möjliggöra kortare ledtider till kunderna. Syftet med studien har varit att analysera flödet av de glutenfria produkterna på Abdon Finax AB för att finna effektiviseringsområden. För att kunna göra detta har en flödeskartläggning gjorts. Denna gjordes med hjälp av observationer samt intervjuer på företaget. Efter en jämförelse mellan teori och empiri har sedan några kritiska punkter pekats ut för förbättring och effektiviseringsförslag har rekommenderats. Dessa förslag involverar standardisering samt sänkningsförslag på omställningstiderna allt för att företaget ska öka sin flexibilitet och kunna producera i mindre batcher. Vilket ska leda till att ledtiderna minskar och även lagerkostnaderna. I framtiden när ställtiderna har minimerats skulle det vara fullt möjligt att producera efter kundorder vilket minimerar riskerna för att kassera produkter samt minskar lagerkostnaderna ytterligare.

  • 64.
    Enjelasi, Maryam
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för industriell ekonomi.
    Diffusion of Nanotechnology to Businesses(Survey Nine Nordic Universities)2014Independent thesis Advanced level (degree of Master (Two Years))Oppgave
    Abstract [en]

    The emergence of nanotechnology as a general purpose technology has introduced a new dimension to science and technology and has a ffected various technological domains.Thus, it is not a homogeneous technology, but rather a group of related technologies. The inherent potential of nanotechnology and its economic benefi t have persuaded many countries to invest billions in research and development of nanotechnology. The evidence implies that nano science has shifted from a theoretical to applied phase since basic research moves toward engineering fields. However, delivering the result of research to the market and entering into the commercialization process requires proper infrastructure, experience in manufacturing process, knowledge of marketing strategies and indeed an investment as engine of any business. In this process universities play a signifi cant role in linking science and innovation, particularly in an emerging domain such as nanotechnology. This study explores the available mechanisms of technology transfer in nanotechnology. Di ffusion of nanotechnology into the business is examined in the nine Nordic universities and the linkage between universities and the fi rms is investigated from the university perspective. The main research issues addressed include the mechanisms of technology transfer, the impact of interdisciplinary of nanotechnology, the interaction of the university and firm, the role of policy makers and intermediary organizations in the di ffusion of nanotechnology and the faculty attitudes. The method used include data analysis based on a web-based questionnaire. The descriptive statistics and an analytical modeling are used on the original data collected through this questionnaire.

  • 65. Ericson, Åsa
    et al.
    Bergström, Mattias
    Johansson, Christian
    Luleå University of Technology.
    Larsson, Tobias
    Luleå University of Technology.
    On the way to knowledge awareness in early design2007Inngår i: / [ed] Frank-Lothar Krause, Berlin, Germany: Springer , 2007, s. 607-616Konferansepaper (Fagfellevurdert)
    Abstract [en]

    This paper discusses views on decision support in product development to identify factors of relevance when designing computer-based decision sup- port for total offers. Providing services in form of physical artefacts of- fered as ‘functions per unit’ is at the heart of total offers. Total offers gain access to possibilities to ‘design in’ value added characteristics into the physical artefact, e.g., maintenance, monitoring, training, remanufacture. Contemporary computer tools seem to be insufficient to support a GO/NO GO decision for total offers. Relevant factors to take into consideration are to support learning and provide the decision makers with insights in a number of plausible ‘what-if’ scenarios to improve the solution space.

  • 66. Ericson, Åsa
    et al.
    Bertoni, Marco
    Luleå University of Technology.
    Larsson, Tobias
    Luleå University of Technology.
    Needs and requirements - How TRIZ may be applied in product-service development2009Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In Product-Service Systems development, understanding of the customers' use of goods seems vital, since the product per se is not sold but rather the performance it brings to the customers' processes in terms of added value. This changed business scenario insists on an integration of a service and a product perspectives in early design phases. However, the approaches to understand customers diverge. In this paper, a need matrix, from the economic theory of needs, and a requirement matrix, from the TRIZ methodology, are used to elaborate on integration aspects to understand customer statements. The comparison of these matrixes made the distinct logics apparent, and gave an indication for the necessity of another type of specification for PSS products. Also, the knowledge base for PSS methodologies has to be extended to encompass a part that visualizes non measurable aspects such as needs.

  • 67. Ericson, Åsa
    et al.
    Larsson, Tobias
    Luleå University of Technology.
    A service perspective on product development - towards functional products2005Inngår i: Proceedings of 12th International Product Development Management Conference, IPDM, Copenhagen, Denmark: EIASM , 2005Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Functional products are understood as a combination of hardware, software and services. Based on interviews with employees in manufacturing firms the notion of functional product development is described. The purpose has been to explore the differences between a service perspective and a core product perspective and highlight changes in the management of product development processes that are motivated by the notion of functional products. Exploring the differences between the two perspectives has identified a gap of how the product is viewed at the business level and technical development levels. The integration of services into the hardware development process in the form of a customised product or product life cycle has been highlighted. Internal and external communication about needs has been identified as useful.

  • 68. Ericson, Åsa
    et al.
    Larsson, Tobias
    Luleå University of Technology.
    People, product and process perspectives on product/service-system development2009Inngår i: Introduction to Product/Service-System Design, London: Springer , 2009Kapittel i bok, del av antologi (Fagfellevurdert)
    Abstract [en]

    The adaptation of Product/Service-System calls for new development models. On one side this businesses give the manufacturing firm possibilities to redesign, upgrade and replace the discrete device that provides the performance their customers are asking for. On the other side, this new situation has to address aspects that are normally not addressed in early product development, i.e., services. In this chapter, we will elaborate on product and service development processes models, as well as system models to propose a frame of reference for multiple perspectives on PSS development. These perspectives are people, product and process. Also, this chapter puts forward implications for the development of PSS models.

  • 69. Ericson, Åsa
    et al.
    Larsson, Tobias
    Luleå University of Technology.
    Larsson, Andreas
    Luleå University of Technology,.
    Expanding the social dimension - Towards a knowledge base for product-service innovation2011Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The extension of businesses to incorporate the provision of function as a service in supplement to standalone products is an ongoing movement in manufacturing industry. In short, this means that the development intent should be guided by the need of ‘performance in use’ that the customer wants, e.g. thrust rather than an engine. By this, the established knowledge base challenges the development team. This paper embarks from the assumption that there are three main challenges, i.e. (1) innovation activities, (2) customer data acquisition and (3) the transformation of data into design information. The purpose is to discuss knowledge sharing activities to contribute to product-service innovation. In this study it has been found that contemporary data acquisition activities filter out important dimensions of knowledge. Thus, does not provide a sound base for service provisions.

  • 70. Ericson, Åsa
    et al.
    Larsson, Tobias
    Luleå University of Technology.
    Larsson, Andreas
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    In search of what is missing - needfinding the SIRIUS way2007Inngår i: Proceedings of the 4th IASTED International Conference on Knowledge Sharing and Collaborative Engineering, KSCE 2006, St Thomas, US Virgin Islands: ACTA Press , 2007Konferansepaper (Fagfellevurdert)
    Abstract [en]

    “Listen closely to your customers, and you are more likely to design products that actually meet or even exceed their needs.”: Such statements have come to dominate company innovation strategies in the last decade, but in reality involving customers in product development is not as straightforward as it sounds. Customers, it is becoming clear, cannot always express their needs adequately. Especially, in the case of innovative products where the starting position by definition includes no existing solution, applying a user-orientated approach is paramount. We argue that techniques for ‘needfinding’ must be the point of departure. This has importance both in terms of methodological issues – how to find customer needs? – and for organizational work – who should be engaged in finding customer needs? In our view, engineers must be involved in identifying and understanding those needs. We have learnt through a series of studies, that structured needfinding by engineers during the earliest phases of product development could better support the process of identifying needs and thereby guide design projects. In this way, two basic problems are overcome. Firstly, identifying needs which are otherwise difficult to articulate becomes possible. Secondly, translation difficulties between customers and engineers are eradicated

  • 71. Ericson, Åsa
    et al.
    Larsson, Tobias
    Luleå University of Technology.
    Larsson, Andreas
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Larsson, Madelene
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för hälsa.
    Need driven product development in team-based projects2007Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In this paper, practical activities of Needfinding - an intertwined approach to identifying needs and to visualizing idea concepts in early design - are described and discussed. This is done primarily to gain an increased understanding of the various representations of user needs that are fed into the fuzzy front-end activities of team-based product innovation projects. The empirical basis comes from a study of an eight-month collaborative product development project, performed under realistic conditions by MSc students in close collaboration with their client. Focusing closely on customers and their needs is encouraged within the conceptual framework of Integrated Product Development and is increasingly highlighted as a key enabler in the design of truly innovative products. Despite the fact that identified customer needs are considered as the initial and primary input into such an innovation process, it can be argued that the design teams do not commonly have a sufficient understanding of customer needs and they do not normally interact with customers in their environment. Besides focusing on measurable aspects of user behaviour and requirements, a traditional approach to identifying and managing customer needs usually includes several interpretive stages before being handed over to the design team. In the context of innovative products, the identification and definition of customers and their needs is a non-trivial and difficult exercise. It involves, we suggest, not only Needfinding but also the definition of ‘those who might need the product’, users and customers to co-evolve iteratively in the early phases of design.

  • 72. Ericson, Åsa
    et al.
    Larsson, Tobias
    Luleå University of Technology.
    Åström, Peter
    Functional product innovation - Reaping the benefits of simulation driven design2007Inngår i: / [ed] Boumedine, M. & Touzet, C., St. Thomas, US Virgin Islands: ACTA Press , 2007Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Innovations are crucial to companies’ competitive strength. Functional Product Development (FPD) is a base for a Functional Product Innovation vision, aiming for a new way to design, develop and sell physical products. The purpose in this paper is to discuss relations between the development process for these products, called FPD, and a simulation-driven approach to design these products, called SDD. FPD consider a holistic approach in early design phases. A life-cycle perspective, cross-company collaboration and a focus on stakeholder needs are examples of issues which are part of the wider view on product development. The SDD approach puts forward an integration of simulations to provide support for designers in FPD. The goal is to take the knowledge domains of engineering, business and production into account in the design to provide for the ability to sell ‘functions per unit’. The combination of FPD and SDD is paramount. The influence of needs plays a leading part in FPD and the use of simulations could create a virtual structure to combine and recombine resources and thus, nurture innovations.

  • 73. Ericson, Åsa
    et al.
    Nergård, Henrik
    Larsson, Tobias
    Luleå University of Technology.
    Knowledge exchange challenges within the extended enterprise2005Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The notion of functional products changes the existing relationship between manufacturing companies. The integration of hardware, software and services in functional products calls for close collaboration with companies having complementary skills. When employees from different companies are involved, strategic resources such as knowledge are shared. From an engineering design perspective, knowledge sharing supported by software systems are useful, though it seems like functional product development insists on integrating multifunctional skills and this is likely to affect the design of software systems. The objective in this paper is to explore knowledge sharing challenges between manufacturing companies, striving to create close functional product collaboration, and hence understand aspects in the design of software systems. In this paper the focus is on Knowledge Based Engineering (KBE) systems, these are considered to be internal engineering specific tools, while collaboration and need for knowledge sharing calls for coupled KBE systems between partners. In this context, knowledge sharing challenges within the extended enterprise are recognised to issues about who to trust and what and how to share. This affects how tightly coupled KBE systems can be. In general, this paper contributes to the ongoing discussion concerning collaboration issues in concurrent engineering design, but especially to the overall understanding of what new demands on KBE systems that are motivated by functional product collaboration.

  • 74. Ericsson, Åsa
    et al.
    Müller, Patrick
    Larsson, Tobias
    Luleå University of Technology.
    Stark, Rainer
    Product-service systems - From customer needs to requirements in early development phases2009Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Framed by Product-Service Systems (PSS), this paper discuss how needs and requirements are applied in early phases. In product development literature these and closely related terms are mixed, and a focus on gathering customer information about goods and their use guides the development team. This theoretical study highlights that lifecycle commitments such as PSS insist on the generation of a broader information basis. The application of a divergent view on goods, their use and the customers is likely to provide such information basis. The discussion provides a proposal of a simple model to set needs and requirements in relation.

  • 75.
    Frank, Martin
    Volvo Construction Equipment AB.
    Connected Machinery - Enabling Automation2015Inngår i: 8th AVL International Commercial Powertrain Conference Proceedings (2015) / [ed] AVL List GmbH, SAE International, Graz, Austria: Society of Automotive Engineers, 2015, Vol. 8, s. 91-95, artikkel-id 4.3Konferansepaper (Fagfellevurdert)
    Abstract [en]

    With the increased demand on fuel efficiency andproductivity of the different construction equipmenttypes, the connection of the equipment’s subsystems, the connection between the different on sitemachines and the connection to the site managementgets more and more important. By analyzing thedifferent systems and the underlying requirements,several optimization possibilities arise with theconnection of the different data sources. It will beshown that the connection of the different system onmachine level as well as the connection betweenmachines will have a big impact on performance andefficiency of the systems and subsequently of themachine itself.

  • 76.
    Frank, Martin
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik. Volvo Construction Equipment AB.
    Towards Autonomous Construction Equipment: Supporting On-Site Collaboration Between Automatons and HumansInngår i: International Journal of Product Development, ISSN 1477-9056, E-ISSN 1741-8178Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    To support the application of automated machines andcollaborative robots in unstructured environments like in the mining,agriculture and construction sector the needs of the human co-workershould be investigated to ensure a safe and productive collaboration.The empirical study presented includes the prototyping of a solution forhuman-machine communication, which has been supported by a designthinking approach. An understanding of the human needs had beencreated through jobsite observations and semi-structured interviewswith human workforces working in close proximity to heavy mobileequipment. The results shows that trust and communication have a bigimpact on the jobsite collaboration.

  • 77.
    Fransson, Jon
    Blekinge Tekniska Högskola, Sektionen för planering och mediedesign.
    Silicon Roundabout: An agglomeration economy in East London2013Independent thesis Advanced level (degree of Master (One Year))Oppgave
    Abstract [en]

    This paper analyses the agglomeration of companies in Silicon Roundabout in East London from the perspectives of Porter's cluster theory, Marshall's industrial district, and Lundvall's innovation system. It consider how the phenomenon can be understood from these perspectives and how it have changed from an organic development to a matter for the UK government which have intervened with the development from the 2010.

  • 78.
    Fredin, Annie
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för industriell ekonomi.
    Hammar, Erica
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för industriell ekonomi.
    Funktionsorienterad kontra flödesorienterad produktionslayout: -­Produktionskapacitetseffekter vid layoutförändring vid fabrikstillverkning av bostäder2017Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [sv]

    Sammanfattning

    Dagens industriföretag strävar ständigt efter en ökad effektivitet samtidigt som de vill hållanere kostnaderna för att öka sin konkurrenskraft (Sörqvist, 2013). För att minska kostnaderoch förbättra produktionssystem är det därför viktigt att ha en väl planeradproduktionslayout (Chittratanawat och Noble, 1999). Två olika produktionslayouter ärfunktionsorienterad produktionslayout och flödesorienterad produktionslayout. För att mätaoch analysera en process i en produktionslayout kan genomloppstid användas (Lin, 2008).De variabler som utgör genomloppstid i denna studie är ställtid, bearbetningstid, PIA-lageroch transporttid. Syftet med denna studie är att analysera hur egenskaper för enproduktionsprocess påverkar vilken produktionslayout som är att föredra. Ett specifikt syfteär att analysera hur genomloppstid påverkas vid förändring av produktionslayout.

    I denna studie har en fallstudie genomförts för att studera en befintlig produktionslayout somkan ställas mot en annan tänkbar produktionslayout genom simulering för att analyseraeffekten av layoutförändringen. BoKlok valdes som fallföretag eftersom de uppfyllde dennastudies två kriterier; ha en viss grad av flödesorienterad produktionslayout och funktionsorienterad produktionslayout samt minst en identifierad flaskhals i produktionen.För att simulera resultatet av layoutförändringen användes Monte Carlo-simulering eftersom det är ett användbart verktyg för simulering av komplexa system.

    Resultatet av mätningarna i nulägesanalysen visar att PIA-lager står för 99,14 % av dentotala genomloppstiden för den utvalda processen och att layoutförändringen resulterar i attden totala genomloppstiden minskar med 99,51 %. Om man bortser från PIA-lager minskargenomloppstiden för den utvalda processen med 45,25 %. En annan positiv effekt somdenna studie visar är att 380 fler ytterväggar kan tillverkas per år, givet att tillverkningensker i ett konstant flöde. Detta innebär en procentuell ökning med 82,61 % avproduktionseffekten. Denna studie visar att layoutförändringen har negativ inverkan påbearbetande maskiners utnyttjandegrad. Studien visar att utnyttjandegraden för den maskinsom bearbetar gipsskivor minskar med 96,54 %.

    En begränsning är att denna studie enbart har studerat en delprocess i produktionen.Layoutförändringen kan ge effekter på andra delar i produktionen som inte har studerats idenna studie. Det är möjligt att det uppstår ledtider i andra delprocesser i produktionen sominte syns genom att analysera den utvalda processen i produktionen.

    Slutsatsen som kan dras efter att resultatet analyserats är att genomloppstiden för denutvalda delprocessen minskade vid en ökning av flödesorienterad produktionslayouteftersom samtliga fyra variabler som utgör genomloppstid i denna studie minskade.

  • 79.
    Gomez, Esteban
    et al.
    Blekinge Tekniska Högskola, Sektionen för management.
    Gunn, Ryan
    Blekinge Tekniska Högskola, Sektionen för management.
    Do managers that coach become better leaders? An exploration into the relationship between managerial coaching and leader development2012Independent thesis Advanced level (degree of Master (One Year))Oppgave
    Abstract [en]

    Purpose: Within managerial coaching research, no-one has specifically explored the relationship between managerial coaching and leader development for the manger. Does the manager derive beneficial outcomes from coaching others? Do these outcomes help develop the manager to be a better leader? The Authors ask What is the relationship between managerial coaching and leader development from the perspective of the coaching manager? In answering, two objectives are addressed. First, establish if there is a relationship. Second, seek to understand the linkage between applying managerial coaching skills and any resulting perceived and/or actual leader development. Design/methodology/approach: A mixed methods embedded research design was applied to a branch of Motorola Solutions in Colombia. For the first objective (embedded), the authors adapted managerial coaching and leader development questionnaires from current models to determine a quantitative correlation between the two activities. For the second objective, paucity of directly relevant research forced an exploratory search of disparate topics to better understand the phenomenon of coaching and its workings. Qualitative semi-structured interviews were developed and administered. Findings: For the first objective, quantitative data supports a strong positive correlation between managerial coaching and leader development. For the second objective, the authors developed a new taxonomy for describing the components of the managerial coaching - leader development relationship. The components consist of outcomes, pathways and mechanisms. The mechanisms identified help explain why and how coaching outcomes occur. Pathways help explain from where outcomes arrive - through the primary act of coaching itself or via secondary routes. With an understanding of pathways and mechanisms, potential outcomes for the manager are more readily identified - for example the circuitous relationship between managerial coaching, employee development and leader development. Originality/value: The aim is to develop a more complete picture of managerial coaching as a method of development for the manager and others. The quantitative method for the correlation between managerial coaching and leader development is original. The proposed taxonomy, used to explain the inner workings and routes of coaching outcomes, is original and provides building blocks for further research. Examples of key facilitating mechanisms for coaching and development are given. The pathways concept is unique within managerial coaching and supports positive leader development outcomes for the manager, not only from superiors, but from oneself and from those coached.

  • 80.
    Gray, Amber
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Rudenko, Oleg
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    An Intense Wave in Defective Media Containing Both Quadratic and Modular Nonlinearities: Shock Waves, Harmonics, and Nondestructive Testing2018Inngår i: Acoustical Physics, ISSN 1063-7710, E-ISSN 1562-6865, Vol. 64, nr 4, s. 402-407Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The observed nonclassical power-law dependence of the amplitude of the second harmonic wave on the amplitude of a harmonic pump wave is explained as a phenomenon associated with two types of nonlinearity in a structurally inhomogeneous medium. An approach to solving the inverse problem of determining the nonlinearity parameters and the exponent in the above-mentioned dependence is demonstrated. To describe the effects of strongly pronounced nonlinearity, equations containing a double nonlinearity and generalizing the Hopf and Burgers equations are proposed. The possibility of their exact linearization is demonstrated. The profiles, spectral composition, and average wave intensity in such doubly nonlinear media are calculated. The shape of the shock front is found, and its width is estimated. The wave energy losses that depend on both nonlinearity parameters—quadratic and modular—are calculated. © 2018, Pleiades Publishing, Ltd.

  • 81.
    Gurbatov, S. N.
    et al.
    Nizhnii Novgorod State Univ, RUS.
    Rudenko, Oleg
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Tyurina, A. V.
    Nizhnii Novgorod State Univ, RUS.
    Transformation of High-Frequency Noise in the Field of a Shockwave2018Inngår i: Acoustical Physics, ISSN 1063-7710, E-ISSN 1562-6865, Vol. 64, nr 5, s. 555-562Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We study the interaction of noise and regular signals with a front whose steepness increases or decreases owing to nonlinear distortion of the profile of an intense pumping wave. Projective transformation is used, which is a result of one of the Burgers equation symmetries. Signal interaction with the pumping wave at its leading edge results in an increase in signal amplitude, a decrease in its time scale, an increase in the signal evolution rate, and earlier merging of discontinuities. At the trailing edge, an increase in signal amplitude, an increase in the time scale, and deceleration of the evolution rate occur. Formulas are obtained that describe the transformation of the spectrum and the correlation function of noise. Laws of the change in noise energy for both small and large Reynolds numbers are found. We study the interaction of weak noise with a nonstationary shock front in a medium with a finite viscosity. It is shown that, owing to competition between amplification at the shock front and high-frequency attenuation, the dependence on the noise intensity on distance has a nonmonotonic character, and at large distances, the intensity tends to zero, while the correlation time tends to a finite value.

  • 82.
    Haan, Andreas de
    et al.
    Blekinge Tekniska Högskola, Sektionen för management.
    Dahlberg, Magnus
    Blekinge Tekniska Högskola, Sektionen för management.
    Motivating knowledge workers2013Independent thesis Advanced level (degree of Master (One Year))Oppgave
    Abstract [en]

    The emergence of a knowledge based economy facilitated by the globalisation has changed the rules of the game for many organisations. The most valuable assets within many organisations are no longer the physical resources but the knowledge capital. In contrary to the era of industrialisation, these assets are no longer owned and controlled by the companies but by the employees. The largest challenge for management in the knowledge economy is the need to increase the productivity of the knowledge workers. The most effective approach to increase knowledge worker productivity is by improving their level of motivation. The question for how to best motivate people in an organisation is neither new nor does it have a single clear answer. To create a situation characterised by satisfaction and motivation, focus should be on the motivator, the factors with the potential of creating long time sustainable results. Factors influencing motivation can be described as either intrinsic or extrinsic relating to their nature of effect. Traditionally, most organisations have been focusing on extrinsic motivators such as monetary incentives to increase motivation. Intrinsic motivators include factors relating to the work itself as autonomy, mastery and purpose. This study has included a survey where 355 knowledge workers have ranked 29 different motivational factors. The results show the top five factors all are typical intrinsic factors which indicate employees’ true commitment and motivation originates in the intrinsic nature of the task being performed. Another important finding from this study is each of the factors investigated can play a role in order to motivate the individuals in a group of knowledge workers. As a result of that insight, all organisations with the aim to increase knowledge worker productivity have to take the time to find out how to best motivate each single employee. One way for an organisation to increase individual employee motivation is to start paying attention to personal interests and try to direct different work tasks in accordance with that.

  • 83.
    Hallstedt, Sophie
    et al.
    Blekinge Tekniska Högskola.
    Bertoni, Marco
    Blekinge Tekniska Högskola.
    Isaksson, Ola
    Assessing Sustainability and Value of Manufacturing Processes: A case in the aerospace industry2015Inngår i: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 108, nr Part A, s. 169-182Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In spite of the growing awareness and significance of accounting for sustainability aspects in product development, design decision support is still immature in this end compared to other decision support areas, such as product performance and manufacturability. This paper proposes a novel decision support method that combines qualitative sustainability assessment techniques with a quantitative analysis, without losing transparency and still covering a full sustainability perspective. The aim is to contribute to an understanding for how to enable value assessment of sustainability issues already in early product development situations. The method, named Sustainability Assessment and Value Evaluation, combines two qualitative sustainability assessment techniques with a quantitative Net Present Value analysis based on alternative future scenarios. A case study, related to the development of a new high-temperature aero-engine component, illustrates both how the sustainability assessment identifies hotspots and clarifies potential sustainability consequences for a new product technology, and how Net Present Value is used to assess alternative solution strategies based on the hotspot, to facilitate early stage decision-making in design. The paper argues that the method serves two main purposes: i) to make sustainability consequences more concrete and understandable during design concept selection activities, rather than to have an exact measurement, and ii) to simplify and prioritize, systematically asking what is important in the sustainability analysis, rather than to reduce the sustainability problem. The method allows undertaking the sustainability assessment in a more structured way than what happens today in preliminary design, through scenario building based on socio-ecological assessments, including back-casting to cover the longer time perspective. In addition, the Sustainability Assessment and Value Evaluation-method provided the design team of a means for displaying sustainability consequences on an equal basis with other decision support tool results.

  • 84.
    Hansson, Anton
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Konceptutveckling kring funktionerna hos en kabeldragare2017Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
  • 85.
    Hedberg, Claes
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Rudenko, Oleg
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Collisions, mutual losses and annihilation of pulses in a modular nonlinear medium2017Inngår i: Nonlinear dynamics, ISSN 0924-090X, E-ISSN 1573-269X, Vol. 90, nr 3, s. 2083-2091Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    One of the most important sections of nonlinear wave theory is related to the collisions of single pulses. These often exhibit corpuscular properties. For example, it is well known that solitons described by the Korteweg–de Vries equation and a few other conservative model equations exhibit properties of elastic particles, while shock waves described by dissipative models like Burgers’ equation stick together as absolutely inelastic particles when colliding. The interactions of single pulses in media with modular nonlinearity considered here reveal new physical features that are still poorly understood. There is an analogy between the single pulses collision and the interaction of clots of chemical reactants, such as fuel and oxidant, where the smaller component disappears and the larger one decreases after a reaction. At equal “masses” both clots can be annihilated. In this work various interactions of two and three pulses are considered. The conditions for which a complete annihilation of the pulses occurs are indicated. © 2017 The Author(s)

  • 86.
    Hedberg, Claes
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Rudenko, Oleg
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Nonlinear acoustics of structurally complex materials described by non-analytic nonlinearities2018Inngår i: 25th International Congress on Sound and Vibration 2018, ICSV 2018: Hiroshima Calling, International Institute of Acoustics and Vibration, IIAV , 2018, s. 1993-1998Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Everybody is accustomed to that nonlinear effects amplify with increasing amplitude or intensity of a wave. When the amplitude becomes small, the nonlinearity disappears and the wave enters a linear regime. Instead, we shall consider here so-called strong nonlinearity of the first type (according to a classification introduced earlier by the authors) where the effects of nonlinearity do not disappear even for infinitesimal amplitudes. Among these nonlinearities are modular (M) and quadratically-cubic (QC). When these nonlinearities are included in partial differential equations, they form new mathematical models describing new physical effects. Such equations have been proposed over the past few years and a review of these models is given here. They are interesting because of two reasons: (i) the equations admit exact analytic solutions, and (ii) the solutions describe real physical phenomena. Among them are M- and QC-equations of Hopf, Burgers, Korteveg-de Vries, Khokhlov-Zabolotskaya and Ostrovsky-Vakhnenko types. Media with non-analytic nonlinearities exist among composites, meta-materials, and inhomogeneous and multiphase systems. Some of the physical phenomena manifested in such media are described, e.g. stable shock fronts of compression and rarefaction in QC-media. The last cannot exist in usual media and the periodic wave consists of a series of trapezoidal teeth, rather than usual triangular. In an M-nonlinear medium collision, mutual losses and annihilation of pulses are studied. These pulses exhibit corpuscular properties and, in contrast to solitons (elastic particles) and shock waves (absolutely inelastic collisions), they behave like clots of chemical reagents (fuel and oxidizer). As result of an reaction, the smaller component disappears, and the larger decreases. At equal "masses", these clots disappear or annihilate. In M-media a new stable wave - a modular soliton - exists. Other interesting physical phenomena occur for focused waves in M-media and a review of these is also included in the presentation. Copyright © (2018) by International Institute of Acoustics & Vibration.All rights reserved.

  • 87.
    Hedlund, Björn
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    XLPE-cable Production Optimization: Setup time Reduction at Armoring line2014Oppgave
    Abstract [en]

    At ABB’s high voltage cable factory in Karlskrona, there is a line production that is regarded as a bottleneck. The production rate at this workplace as well as the large variations of setups has created two major problems. The first problem is that it has become difficult for the planning department to determine the lead times for delivery to the customers. The other problem is that the long setup times has made this line production the bottleneck of the whole production. The factory at ABB HVC includes a number of line productions, where each line has their own purpose and value adding processes. The armoring line AR50 that this project has the focus to improve has the last value adding processes for the factory’s main product. The factory’s main product is the Cross-Linked Polyethylene cable, shortened XLPE. There are several different advantages with the XLPE-cable system. First of all they are maintenance-free and environmentally friendly. The main reason that the XLPE-cable is environmentally friendly is because it have low electrical losses. Since the submarine cables are underground the cables are invisible and not effected by weather conditions. This project implements the method SMED as well as various methods from the LEAN transcript in order to reduce the setup times and create a more stable and effficient production. An Ishikawa diagram were used in order to determine the root causes of the problems. Later both technical and management solutions were proposed and implemented. The project has concluded impressive results regarding setup time reduction and annual cost savings. It also enlightens the large potential for further improvement. This project will be continued during the year of 2014 in order to implement the proposed solutions. The future improvements are not just technical but also related to management and group dynamics.

  • 88. Hicks, Ben
    et al.
    Larsson, Andreas
    Luleå Univerisity of Technology.
    Culley, Steve
    Larsson, Tobias
    Luleå Univerisity of Technology.
    A methodology for evaluating technology readiness during product development2009Konferansepaper (Fagfellevurdert)
  • 89.
    Hilding, Amanda
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Evaluation and Consequences Analysis of a Manual Shifter with Modular Design2014Oppgave
    Abstract [en]

    Subcontractors in the automotive industry, have a lot of pressure to bring down costs and to deliver products that are effective, optimized and qualitative. The main purpose of this study is to guide and conduct the first step in the project Standard Building Blocks with modular design, within the business area, manual shifter. The project is directly presented by Kongsberg Automotive, a well-known subcontractor of the automotive industry. The aim of the project is to develop a standard manual shifter with modular design containing standard building blocks. Five different components have been selected in the manual shifter for this study. In each component, there are several concepts on how to design that specific component. The target of the study is to evaluate and analyze the concepts and based on the results decide which of the concepts to be standard building blocks. The study identifies, evaluates and analyses the consequences of the project Standard Building Blocks for the chosen concepts. The results from the study show that some concepts have a greater tendency to form standard building blocks when compared to others. In the study it was proven that non-measurable values have the same significance as the measured values. The results also show that the most suitable concepts depends on the customers’ specifications. The consequence analysis presented many consequences of what an implementation of standard building blocks may imply, from the advantages to possible risk elements. Through the consequence analysis the studied company can become more prepared for the future.

  • 90.
    Holmqvist, Johan
    et al.
    Luleå tekniska universitet.
    Wenngren, Johan
    Luleå tekniska universitet.
    Ericson, Åsa
    Luleå tekniska universitet.
    Johansson, Christian
    Luleå tekniska universitet.
    Thor, Peter
    Luleå tekniska universitet.
    Sharing expertise: Easier said than done2011Inngår i: Functional thinking for value creation: Proceedings of the 3rd CIRP International Conference on Industrial Product Service Systems, Technische Universität Braunschweig, Braunschweig, Germany / [ed] Jürgen Hesselbach, Christoph Herrmann, Berlin: Springer Berlin/Heidelberg, 2011, Vol. 3, s. 201-206Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Manufacturing industry is expressing an increased interest in knowledge management due to the extension towards aservice provision business model. However, the inclusion of softer service aspects indicates that the common view onknowledge management as a way to control and monitor a technical process have limitations. Sharing expertise is anadditional way of managing knowledge particularly with the intentions to make experience based knowledgeorganizational available. By studying product developers’ daily work, especially how they perceive that they apply andshare knowledge, we problematize knowledge activities in product-service development to discuss the establishedknowledge management activities. The paper suggests some considerations to support the development of aknowledge base for product-service design.

  • 91.
    Hosseini, Ehsan
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Mechanical Properties of Outer Protection Layer on Submarine High Voltage Cables2015Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    In this thesis, the Mechanical properties of polypropylene yarn of outer protection layer on Submarine High Voltage Cable, twisted around submarine cable,is determined on various conditions at ABB Company. In the first step, tensile tests are done with polypropylene yarn specimens with and without Bitumen at Room temperature.

    In the second step,tensile tests are done with polypropylene yarn specimens with and without Bitumen and with knotted polypropylene yarn namely: the Fishermen’s knot, the Weaver’s knot, the Square knot and the Overhand knot at Warm Condition (60˚c) and Cold Condition(-5˚c).

    In the final step,it is proposed to obtain numerical solution using FEM analysis with ABAQUS Software to obtain the hoop stress , the yarn stresses from twisting cable and analyzing of the cylindrical buckling in the buckling torsion and buckling bending on the outer layer of submarine cable with polypropylene material that is mixed with Bitumen.

  • 92.
    Ilman, Anwari
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för industriell ekonomi.
    Diffusion and Productivity of an Open Source Software: CakePHP2015Independent thesis Advanced level (degree of Master (Two Years))Oppgave
    Abstract [en]

    The purpose of this thesis was to establish an understanding on the productivity of Open Source Software (OSS) developer community through diffusion of innovation. It was empirically ascertained that network effect affects productivity of OSS community, which provide enough justification to view the matter of productivity through the lens of diffusion of innovation. To reach its purpose, this thesis tackled the issue in two ways: 1) It utilized a definition of IT productivity for new technologies that especially deals with Open Source Software (OSS) communities and 2) It proposed tools and methods to perform such studies. A mature OSS project called CakePHP was chosen as a case for this thesis. I compiled time-series data from the software’s source code that accounts for more than 8 years of development. The obtained raw data in a form of ‘commits’ was converted into network graph and time-series productivity data. Then, dynamic network visualization software was employed to analyze the evolution of its network structure. A quantitative regression analysis using Negative Binomial estimator was also employed to estimate the effects of individual work intensity, community work intensity and network effect on its production rate. Visual inspection on CakePHP’s adoption pattern shows that it does indeed follow S-shaped diffusion curve normally found in other innovation life cycle, though yet to complete its life cycle. The regression results suggest that individual work intensity, network effect, and community work intensity were found to have significant effects on the rate of production output. The results also suggest that individual work intensity has a positive influence on the rate of production while network effect and community work intensity was found to have negative effects. This was suspected to be caused by overdispersion on the productivity level of contributors and also on the type of releases. CakePHP underwent two diffusion phases, which are emergence phase and growth phase. These two phases exhibit very different network characteristics. On emergence phase the adoption rage, network size, number of connections, total production output and work intensity was substantially lower compared to growth phase. Members of the network especially opinion leaders and community leaders played a crucial role to drive adoption.

  • 93.
    Isaksson, Ola
    et al.
    Chalmers, SWE.
    Hallstedt, Sophie
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för strategisk hållbar utveckling.
    Öhrwall Rönnbäck, Anna
    Luleå universitet, SWE.
    Digitalisation, sustainability and servitisation: Consequences on product development capabilities in manufacturing firms2018Inngår i: Proceedings of NordDesign: Design in the Era of Digitalization, NordDesign 2018, The Design Society, 2018Konferansepaper (Fagfellevurdert)
    Abstract [en]

    This paper investigates the impact of the three mega-trends (1) digitalisation (2) sustainability and (3) servitisation on design and development capabilities in manufacturing companies. First, technological advancements have created both product opportunities, and new aids, captured in e.g. the Industry 4.0 paradigm, and intensively driving digitalisation of businesses, that, besides the technological challenges, cause new challenges and problem areas, such as information ownership and shared long-term responsibilities. Second, the need for sustainable solutions increases the focus on the design of circular, resource efficient and radically new technological solutions to be designed with a total life cycle perspective in mind, through use phase, repair and overhaul, until recycling and end-of-life. Third, and finally, the classical roles for suppliers, integrators and users are being changed as servitisation and Product-Service Systems (PSS) offerings affect both products and businesses, and ultimately entire value networks with new constellations of business partners contributing to the realization of solutions for customers. This paper builds on a conceptual literature review to identify relevant information about the three trends regarding their impact on design and societal development. In addition, a semi-structured interview study was conducted to investigate possibilities and challenges that four different types of manufacturing companies perceive today with respect to the mega-trends, and more specifically how these trends impact the design and development capabilities in the studied companies. Results from this empirical study show that digitalisation is viewed as an opportunity to find new solutions to meet customer needs and be competitive at the future market. Sustainable Product Development (SPD) was instead primarily to fulfil requirements and legislation. However, it was clear that some manufacturers start to see market forces as a driver. PSS can be seen as a means to create new solutions, often with digital tools as facilitator. Altogether, the literature study and the empirical data show that increasingly, designers are expected to design entire solutions, as opposed to merely artefacts. This implies that designers need to consider not only the product performance and cost, but products' and solutions' behaviour and impact over complete life cycles, developed and organized by business networks together with several suppliers and other partners with different capabilities. The basis for the designer is a technology mix comprising services, software, electronics and hardware, bundled into offerings in new business models, interlinked with new digital opportunities. Moreover, it is clear that the three trends do not represent stand-alone perspectives but affect one another in an intertwined way. To achieve long-term effects, the sustainability issues need to be integrated with many other subject areas, and implemented simultaneously as digital solutions, e.g. digital twins to physical artefacts are conceived, and value creating networks are being built up. Obviously, these three trends affect the need for change in product design capabilities and escalate the challenges of the integrated product development viewpoint, in a way that is difficult to master for individual engineers. Support for design and development work is needed that takes into account the mega-trends digitalisation, sustainability, and servitisation.

  • 94. Isaksson, Ola
    et al.
    Larsson, Tobias
    Luleå University of Technology.
    Johansson, Pär
    Towards a framework for developing product/service systems2011Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Increasingly, manufacturers become service providers rather than product providers. In this work, a framework based on industrial studies is suggested for developing product service system. The framework is represented by five life cycle phases where three actor categories views are represented. The framework is described using examples from different industries/businesses. The intention is that the framework can be used for both B2C and B2B type of relations. One significant characteristic is that the “traditional” sales phase is replaced by a sales occasion that occur within different life cycle phases depending on which business context/model is used.

  • 95. Isaksson, Ola
    et al.
    Larsson, Tobias
    Division of Functional Product Development, Luleå University of Technolog.
    Öhrwall Rönnbäck, Anna
    Development of product-service systems - challenges and opportunities for the manufacturing firm2009Inngår i: Journal of engineering design (Print), ISSN 0954-4828, E-ISSN 1466-1837, ISSN 0954-4828, Vol. 20, nr 4, s. 329-348Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Product-Service Systems (PSS) raise interesting opportunities for the manufacturing firm as the <em>function</em> is provided to meet customer needs rather than the physical hardware itself. PSS offerings based on the manufacturer's knowledge about the product and the technology can increase its status as problem-solver and solution-provider, reduce life cycle cost and produce high revenue. However, PSS including, e.g. hardware, services, software and electronics are efficient and competitive only if developed for the specific purpose with features such as easy to maintain, upgradeable, with built-in sensors for collecting in-use and service data, and easy to use. This changes the requirements on the manufacturing firm's development process. Looking back historically, the last century gives an interesting changing landscape of the rationale for the product-development methods used in manufacturing firms. This article, based on the previous research in the product- and service-development fields, and on empirical results from studies at several manufacturing firms, looks into how the engineering work is affected by PSS and how it can be enhanced for PSS, especially in terms of required competencies and other capabilities. It results in recommendations for a new, functional product-development process.

  • 96.
    Issah, Abdul-Basit
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för industriell ekonomi.
    Innovation Outcomes: Spin-off Processes in Family Firms2014Independent thesis Advanced level (degree of Master (Two Years))Oppgave
    Abstract [en]

    The purpose of this thesis was to analyse the relationship between being an employee of a family firm and transition to self-employment. It was ascertained empirically whether being employees of family firms have a positive influence on the phenomenon of spin-offs in Sweden. Using a data set of individuals as well as firms for the whole of Sweden, the thesis applied a logistic regression model to analyse the influence of family firms on spin-off processes. Specifically I examined how employees of firms as at 2007 transitioned to self-employment in 2008. I also examined the characteristics of employees who spin-off and the choice of industry of operation of spin-offs. Disagreements between owners of family firms and employees about the strategic focus of the business arise as a result of the long-term horizon of family firms, coupled with agency issues as well as organisational culture that encourages the direct involvement of owners of family firms in the routines. Employees who discover innovative and risky ideas are likely to exploit them outside the company due to the reluctance of the family firm to implement them, due to its long-term orientation. The paper established a nexus between family firms and spin-off processes. The results suggest that being an employee of a family firm has a positive and significant influence on the decision to transition to self-employment. The results also indicate that employees in relatively higher occupational categories are less likely to spin-off as compared to employees in relatively lower occupational classifications. In terms of the choice of industries of operation, it is found that spin-offs are less likely to be established in the same industry as their parent firms. Increasingly, spin-offs are carving their own images in their respective new industries. Last but not least, contrary to evidence that employees of smaller firms are more likely to spin-off, our results show otherwise.

  • 97.
    Jaghbeer, Yasmeen
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för strategisk hållbar utveckling.
    Hallstedt, Sophie
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för strategisk hållbar utveckling.
    Larsson, Tobias
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Wall, Johan
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Exploration of Simulation-Driven Support Tools for Sustainable Product Development2017Inngår i: Procedia CIRP / [ed] Tim C. McAloone, Daniela C.A. Pigosso, Niels Henrik Mortensen and Yoshiki Shimomura, Elsevier, 2017, Vol. 64, s. 271-276Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Global society is encountering many challenges such as climate change, resource depletion, etc., which comes with a set of challenges and opportunities for businesses. Applied research in operational tools and methods that support sustainable product- and service systems innovation, aims to strengthen businesses to overcome these challenges. In recent years, several tools and methods have been developed in the sustainable product development field with focus on modelling and digitalization. This paper explores how sustainability has been integrated in modelling and simulation, and presents results from a literature review with the purpose of highlighting opportunities and challenges in the field. Furthermore, an initial model-based engineering support toolbox (MBE) is presented, with focus on support tools for socio-ecological sustainability integration in the early product development stages.

  • 98.
    Jagtap, Santosh
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Larsson, Tobias
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Design and Frugal Innovations: Three roles of resource-poor people2018Inngår i: Proceedings of the International Design Conference / [ed] D. Marjanović, M. Štorga, S. Škec, N. Bojčetić, N. Pavković, The Design Society, 2018, s. 2657-2668Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Design is imperative to satisfy needs of people in resource-limited societies. Many design studies have been carried out in the context of such societies in developing countries, and are discussed under names such as humanitarian engineering, frugal innovations, appropriate technology, design at the Base of the Pyramid, design for development, etc. In this paper, we review a wide range of literature, with close analysis of 30 design studies in this field to understand how marginalised people were engaged and positioned in those studies and to plan for future research in this field.

  • 99.
    Jagtap, Santosh
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Larsson, Tobias
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
    Resource-Limited Societies, Integrated Design Solutions, and Stakeholder Input2019Inngår i: She Ji: The Journal of Design, Economics, and Innovation, ISSN 2405-8726, Vol. 5, nr 4, s. 285-303Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Poverty is a multidimensional issue, characterized by deprivations and constraints at the individual, institutional, economic, and technological level. To satisfy the unmet or underserved needs of people living in poverty, the relevant constraints in the target context must be addressed via integrated design solutions. Although previous studies in this field show that designing integrated solutions requires input from multiple stakeholders, there is a lack of relevant research examining the nature of this input. To address this, using a case study methodology, we analyzed three design projects that have successfully responded to the pertinent constraints within each context by supporting social and human development among its marginalized populations. Based on our findings, we designed a stakeholder input framework categorizing a diverse range of stakeholder perspectives—both inside and outside the context of poverty—that can contribute towards integrated solutions design. The findings and resulting stakeholder input framework can help designers gain a deeper appreciation of the constraints faced by marginalized societies, and how design input from various stakeholders can be mobilized to overcome these constraints and create value for resource-poor people.

  • 100.
    Jiacheng, Cai
    et al.
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik. Kunming University of Science and Technology.
    Chunhong, Yang
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik. Kunming University of Science and Technology.
    Cenan, Chen
    Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik. Shanghai Polytechnic University.
    Design and Control of Trailer Based Shopping Cart Washing System2016Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    The shopping trolley have been frequently used in our daily life. However, the hygiene condition of cart makes people worry a lot, especially the handle brothers. Nowadays, several methods have been proposed to clean the shopping carts but considered uneconomic and inflexible.

    In this study, we aim to design an integrated cart washing system based on a trailer applied to medium or small supermarket. This system should be more efficient, economic, easily to operate, safer and les water consummation.

    The integrated cart washing system has three basic functions of washing, disinfection and drying. The system is controlled by PLC program, all steps in the cleaning process are fully automatic insider the trailer and each component are adjustable according to various shopping carts.

    The system only requires one person to operate and it costs 30 seconds to wash a single cart, able to wash up to 120 cart/hour. Disinfection and drying steps provide high washing quality. Moreover, water-recycling design can save part of wasted water.

    The modelling and assembly was designed in Autodesk Inventor 2016, the hardware design circuit-writing diagram was performed in AutoCAD, the software design of Programmable logic controller (PLC) was made in STEP 7-Micro/Win. Theoretical calculation and simulation prove the safety and possibility of our system. We concluded that this system might have commercial interests in the market.

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