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  • Volgsten, Ulrik
    Örebro University, School of Music, Theatre and Art.
    Vardagslivets fonografi: Grammofonspelande i Sverige 1903–19452019In: Musikens medialisering och musikaliseringen av medier och vardagsliv i Sverige mediehistoriskt arkiv / [ed] Ulrik Volgsten, Lund: Mediehistoria, Lunds universitet , 2019, p. 25-55Chapter in book (Refereed)
    Abstract [sv]

    Kapitlet handlar om användningen av fonografer och grammofoner under första hälften av 1900-talet. I stället för att fokusera på Storbritannien eller USA, som tidigare forskning ofta har gjort, ligger fokus på det i förhållandevis perifera Sverige. Mer specifikt är frågan hur fonografi förvandlades från att betraktas som vetenskaplig kuriosa till att bli en vardaglig medieteknologi och hur den påverkat kultur och musikalisk kommunikation. Källmaterialet består av dags- och veckotidningar, musiktidskrifter, kataloger över tidiga bostads- och hemutställningar, samt ett etnografiskt frågeformulär från 1962 med nationell räckvidd som ber om personliga minnen av grammofonen från åren runt sekelskiftet 1900. Kommersiell reklam (som utgör källmaterial för en stor del av tidigare forskning) kompletteras därmed och jämförs med andra typer av journalistiskt, vetenskapligt och populärvetenskapligt innehåll, från nyheter till korta romaner och offentliga policyplaner, till personliga minnen. Genom att undersöka medier som riktar sig till icke-specialister och amatörlyssnare (och som det visar sig, även icke-lyssnare), samt med inriktning på vardagsrummet i hemmets privatsfär, balanseras det vardagliga och prosaiska mot det åtrådda och prestigefyllda - ett brett spektrum inom vilket vardagslivet utspelade sig för en stor del av befolkningen. Resultatet av undersökningen visar två distinkta sätt att förhålla sig till inspelad musik, som beskrivs som utilitaristisktrespektive solipsistiskt.

  • Volgsten, Ulrik
    Örebro University, School of Music, Theatre and Art.
    Inledning: Medialisering och musikalisering i Sverige2019In: Musikens medialisering och musikaliseringen av medier och vardagsliv i Sverige / [ed] Ulrik Volgsten, Lund: Mediehistoria, Lunds universitet , 2019, 1, p. 5-21Chapter in book (Refereed)
    Abstract [sv]

    Musiken har genomgått en medialisering utan like de senaste hundra åren. Elektrifiering och digitalisering av musikmedierna har inneburit att musik kan höras så gott som överallt och när som helst. Vid sidan av medialisering introducerar föreliggande antologi begreppet musikalisering. Medan medialisering handlar om mediernas långsiktiga påverkan på vardagspraktiker och kommunikation, handlar musikalisering om förändringar i musikens roll. Förutom att vara en naturlig komponent i allt fler vardagssammanhang bidrar musik i allt högre grad till att strukturera och organisera uppfattningar om, erfarenheter av och förväntningar på den levda verkligheten.

  • Volgsten, Ulrik
    Örebro University, School of Music, Theatre and Art.
    Fantasy control: Implications for distributed imagination and affect attunement in music and sound2019In: The Oxford Handbook of Sound and Imagination, Volume 1 / [ed] Mark Grimshaw-Aagaard, Mads Walther-Hansen & Martin Knakkergaard, Oxford: Oxford University Press, 2019, 1, p. 229-249Chapter in book (Refereed)
    Abstract [en]

    This chapter deals with the control of imagination. Three thematically distinct aspects of sonic imagination are investigated – archive, context, and identification – together with two modes of connection with the environment – metaphorical projection and affect attunement. It is argued that much of the available work on sonic imagination, music perception, and embodied cognitive science suffers from a one-person perspective, unable to explain either the difference between environmental sound and culture-specific music, or the dominant role of feelings in our musical experiences. In its stead an approach is suggested that assigns central importance to affect attunement in our encounters with sound and music. Through a case study, different types of sonic control are exemplified, showing that control of sonic imagination may be both negative and positive for the listener.

  • Volgsten, Ulrik
    Örebro University, School of Music, Theatre and Art.
    A technology and its vicissitudes: playing the gramophone in Sweden 1903–19452019In: Popular Music, ISSN 0261-1430, E-ISSN 1474-0095, Vol. 38, no 2, p. 219-236Article in journal (Refereed)
    Abstract [en]

    This inquiry deals with the changing role of the technology and the use of phonographs and gramophones during the first half of the 20th century. Rather than looking at the UK or USA, which much previous research has done, the focus is on peripheral Sweden. More specifically the question is how phonography turned from being a scientific curiosity into becoming an everyday media technology, and how it thereby influenced culture and everyday musical communication. The findings show two distinct approaches to recorded music, which intermingle in today’s unprecedented musicalisation of culture and everyday life around the globe – approaches respectively described as utilitarian and solipsistic.

  • Gerdin, Jonas
    et al.
    Örebro University, Örebro University School of Business.
    Englund, Hans
    Örebro University, Örebro University School of Business.
    Contesting commensuration: Public response tactics to performance evaluation of academia2019In: Accounting, Auditing & Accountability Journal, ISSN 1368-0668, E-ISSN 1758-4205, Vol. 32, no 4, p. 1098-1116Article in journal (Refereed)
    Abstract [en]

    Purpose: The purpose of this paper is to explore how actors subjected to public performance evaluations may “contest commensuration,” i.e. may seek to influence how such ratings and rankings will be construed among important stakeholders.

    Design/methodology/approach: A qualitative study of press releases, and interviews with department heads, is used as a basis for the analysis.

    Findings: The empirically derived taxonomy of public responses to a state-initiated performance evaluation of educational programs shows that actors may mobilize an array of commensuration management tactics so as to maintain or improve one’s relative positional status. Such tactics may have at least three different foci, namely, on the comparison object (i.e. on the new grouping of actors), the comparison dimension (i.e. the standardized format for comparison) and the comparison rate (i.e. the rate received), respectively. The authors also find that not only are threats to positional status likely to spur commensuration management tactics, but also the opportunity to exploit a good rate.

    Originality/value: The paper augments recent research that has problematized the so-called “reactive conformance thesis” by focusing on how evaluated organizations may directly try to influence external stakeholders through public responses. The study is also one of the first that analytically disentangles how they may skillfully exploit different forms of “plasticity” that are inherent in any type of commensuration.

  • Hasche, Nina
    et al.
    Örebro University, Örebro University School of Business.
    Höglund, Linda
    School of Business, Society and Engineering (EST), Mälardalens University, Västerås, Sweden.
    Linton, Gabriel
    Örebro University, Örebro University School of Business.
    Quadruple helix as a network of relationships: creating value within a Swedish regional innovation system2019In: Journal of Small Business and Entrepreneurship, ISSN 0827-6331, E-ISSN 2169-2610Article in journal (Refereed)
    Abstract [en]

    A regional smart specialization initiative is investigated from a quadruple helix framework (industry, government, academia, and users/civil society). Based on a qualitative case study, we examine the interdependencies of actors, resources, and activities from a micro perspective. The aim is to understand the relationships and the value created between the different actors. From the results we conclude that the fourth helix should be viewed as a whole – an arena where triple helix actors in different value adding relationships take on different roles – where they create value to civil society, for example, new jobs or products for improved elderly care. In line with this, we state that the fourth helix is far more complex than limiting it to simply become a fourth separate helix of users or civil society. There is a complexity in that the fourth helix consists of both different users (including triple helix actors) as well as civil society. Users in the quadruple helix framework can also be defined in several ways depending on the context of the arena (the fourth helix) and what value adding activities they bring to civil society. Thus, users can be businesses, organizations, citizens, society, and many more things.

  • Kristoffersson, Eleonor
    Örebro University, School of Law, Psychology and Social Work.
    How to Tax The Sharing Economy2019In: Proceedings of the GSRD INTERNATIONAL CONFERENCE, World research library , 2019, p. 30-35Conference paper (Refereed)
    Abstract [en]

    The sharing economy refers to online market places that bring sellers and buyers of goods and services together. The sharing economy is rarely taxed, rarely reported to and rarely controlled by the Tax Authorities. In this paper two main problems concerning taxing the sharing economy are identified. Firstly, the sharing economy is difficult to control, since there are many small providers. Secondly, different tax treatment for businesses and private individuals makes it difficult for small providers to know how to comply with tax obligations. The solution is not the introduction of a digital services tax (DST) imposed on the intermediary platforms. Such a tax can contribute to tax the sharing economy, but not replace income tax or VAT/GST.Income tax and VAT/GST systems throughout the world are based on a scenario of businesspeople versus private individuals dating from the 20th century, which is now out of date. A solution could be to tax business persons and private individuals in a uniform way, which would provide a simpler tax system that would be easier to comply with.

  • Dmytryshyn, Andrii
    Department of Computing Science, Umeå University, Umeå, Sweden.
    Tools for Structured Matrix Computations: Stratifications and Coupled Sylvester Equations2015Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Developing theory, algorithms, and software tools for analyzing matrix pencils whose matrices have various structures are contemporary research problems. Such matrices are often coming from discretizations of systems of differential-algebraic equations. Therefore preserving the structures in the simulations as well as during the analyses of the mathematical models typically means respecting their physical meanings and may be crucial for the applications. This leads to a fast development of structure-preserving methods in numerical linear algebra along with a growing demand for new theories and tools for the analysis of structured matrix pencils, and in particular, an exploration of their behaviour under perturbations. In many cases, the dynamics and characteristics of the underlying physical system are defined by the canonical structure information, i.e. eigenvalues, their multiplicities and Jordan blocks, as well as left and right minimal indices of the associated matrix pencil. Computing canonical structure information is, nevertheless, an ill-posed problem in the sense that small perturbations in the matrices may drastically change the computed information. One approach to investigate such problems is to use the stratification theory for structured matrix pencils. The development of the theory includes constructing stratification (closure hierarchy) graphs of orbits (and bundles) that provide qualitative information for a deeper understanding of how the characteristics of underlying physical systems can change under small perturbations. In turn, for a given system the stratification graphs provide the possibility to identify more degenerate and more generic nearby systems that may lead to a better system design.

    We develop the stratification theory for Fiedler linearizations of general matrix polynomials, skew-symmetric matrix pencils and matrix polynomial linearizations, and system pencils associated with generalized state-space systems. The novel contributions also include theory and software for computing codimensions, various versal deformations, properties of matrix pencils and matrix polynomials, and general solutions of matrix equations. In particular, the need of solving matrix equations motivated the investigation of the existence of a solution, advancing into a general result on consistency of systems of coupled Sylvester-type matrix equations and blockdiagonalizations of the associated matrices.

  • Dmytryshyn, Andrii
    Örebro University, School of Science and Technology. Department of Computing Science, Umeå University, Umeå, Sweden.
    Skew-symmetric matrix pencils: stratification theory and tools2014Licentiate thesis, comprehensive summary (Other academic)
    Abstract [en]

    Investigating the properties, explaining, and predicting the behaviour of a physical system described by a system (matrix) pencil often require the understanding of how canonical structure information of the system pencil may change, e.g., how eigenvalues coalesce or split apart, due to perturbations in the matrix pencil elements. Often these system pencils have different block-partitioning and / or symmetries. We study changes of the congruence canonical form of a complex skew-symmetric matrix pencil under small perturbations. The problem of computing the congruence canonical form is known to be ill-posed: both the canonical form and the reduction transformation depend discontinuously on the entries of a pencil. Thus it is important to know the canonical forms of all such pencils that are close to the investigated pencil. One way to investigate this problem is to construct the stratification of orbits and bundles of the pencils. To be precise, for any problem dimension we construct the closure hierarchy graph for congruence orbits or bundles. Each node (vertex) of the graph represents an orbit (or a bundle) and each edge represents the cover/closure relation. Such a relation means that there is a path from one node to another node if and only if a skew-symmetric matrix pencil corresponding to the first node can be transformed by an arbitrarily small perturbation to a skew-symmetric matrix pencil corresponding to the second node. From the graph it is straightforward to identify more degenerate and more generic nearby canonical structures. A necessary (but not sufficient) condition for one orbit being in the closure of another is that the first orbit has larger codimension than the second one. Therefore we compute the codimensions of the congruence orbits (or bundles). It is done via the solutions of an associated homogeneous system of matrix equations. The complete stratification is done by proving the relation between equivalence and congruence for the skew-symmetric matrix pencils. This relation allows us to use the known result about the stratifications of general matrix pencils (under strict equivalence) in order to stratify skew-symmetric matrix pencils under congruence. Matlab functions to work with skew-symmetric matrix pencils and a number of other types of symmetries for matrices and matrix pencils are developed and included in the Matrix Canonical Structure (MCS) Toolbox.

  • Broch Ålvik, Jon Mikkel
    Örebro University, School of Music, Theatre and Art.
    Touching from A Distance: Imagining Marit Larsen in Queer Spaces2019In: Radical Musicology, ISSN 1751-7788, E-ISSN 1751-7788, Vol. 7Article in journal (Refereed)
    Abstract [en]

    This article investigates into how Norwegian pop artist Marit Larsen's music and persona may be open to queer readings. Via close readings of songs and media appearances, I wish to show the possibility of meanings in the work of an artist whose music, on a superficial level, comes across as contingent on the artist’s own, heteronormative version of events.

  • Broch Ålvik, Jon Mikkel
    Örebro University, School of Music, Theatre and Art.
    Made in Sweden: Studies in popular music2019In: Svensk tidskrift för musikforskning, ISSN 0081-9816Article, book review (Refereed)
  • Svensson, Robert
    Örebro University, School of Health Sciences.
    From tracksuit to trench coat: The changing position of the Swedish male elite soccer coach between the 1960s and the 2010s2019Conference paper (Other academic)
  • Svensson, Robert
    Örebro University, School of Health Sciences.
    A valuable contribution to the growing research field of sports coaching history2019In: Idrottsforum.org/Nordic sport science forum, ISSN 1652-7224Article, book review (Other academic)
  • Susha, Iryna
    et al.
    Örebro University, Örebro University School of Business. Faculty of Technology, Policy and Management, Delft University of Technology, Delft, The Netherlands.
    Rukanova, Boriana
    Faculty of Technology, Policy and Management, Delft University of Technology, Delft, The Netherlands.
    Gil-Garcia, J. Ramon
    University at Albany, State University of New York, USA & Universidad de las Americas Puebla, Mexico.
    Tan, Yao-Hua
    Faculty of Technology, Policy and Management, Delft University of Technology, Delft, The Netherlands.
    Gasco, Mila
    University at Albany, State University of New York, USA & Universidad de las Americas Puebla, Mexico.
    Identifying mechanisms for achieving voluntary data sharing in cross-sector partnerships for public good2019In: Proceedings of the 20th Annual International Conference on Digital Government Research, ACM Digital Library, 2019, p. 227-236Conference paper (Refereed)
    Abstract [en]

    It has been advocated that sharing business data can generate public value. Still this information sharing often needs to be done on voluntary basis and that often poses major challenges. The main research question addressed in this paper is: How is voluntary information sharing to create publicvalue achieved and what are the drivers and mechanisms to achieve that? While voluntary information sharing to achieve public value is recognized in the eGovernment literature, this literature is limited to understand how such information sharing can be achieved. To address the research question, we borrow a framework of platforms for cross sector social partnerships from organization studies and use it as a conceptual lens to structure the analysis of three case studies where voluntary information sharingwas achieved in different domains. Building on the framework and our case analysis, we distinguish three types of information sharing collaborations, namely Resource-dependence platform, Social Issue platform, and Societal Sector platform which allow to distinguish the motivations why parties enter into voluntary information sharing collaborations. Our analysis suggests that while the higher goal of the voluntary information sharing may be the same (i.e. to create public value), parties are driven by different motivations of why they enter into the information sharing collaborations. Furthermore, in each of these different types of collaborations the mechanisms of how the information sharing was achieved, as well as the role the government can play, differ.

  • Quennerstedt, Mikael
    Örebro University, School of Health Sciences.
    Physical education and the art of teaching: transformative learning and teaching in physical education and sports pedagogy2019In: Sport, Education and Society, ISSN 1357-3322, E-ISSN 1470-1243, Vol. 24, no 6, p. 611-623Article in journal (Refereed)
    Abstract [en]

    The paper is the Jose Maria Cagigal Scholar Lecture presented at the AIESEP World Congress in Edinburgh 2018. In the paper I argue that the only real sustainable aim for physical education is more physical education, where different ways of being in the world as some-body are both possible and encouraged. To reach this aim, a focus on the art of teaching is vital as a way of critically scrutinising and designing transformative and genuinely pluralistic physical education practices. In order to do this I discuss education as being educative, a certain view of the child as well as teaching as a continuous act of making judgements about the why(s), what(s) and how(s) of education, normative judgements about desirable change. The take home messages involves: (i) reclaiming a certain view of the child in education, (ii) reclaiming the open-endedness of physical education, and (iii) reclaiming the art of teaching in physical education, which is about being educative and making judgements about what to bring to the educational situation. We then must start with the purpose of education - the why - before deciding on the what and how.

  • Mårdh, Andreas
    Örebro University, School of Humanities, Education and Social Sciences.
    Om historieämnets politiska dimension: diskursiva logiker i didaktisk praktik2019Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Today, history education is often a contested issue over which political frontiers are drawn between adversaries advocating fundamentally different visions of what constitutes a desirable curriculum and, by extension, a desirable society. At present, this dimension is in need of increased attention, considering that populist rhetoric has gained a foothold in mainstream politics and that history, as a school subject, continues to serve the purpose of constituting “the people”, often in national and ethnic terms. Against this background, the aim of this thesis is to comprehensively grasp the political dimension of history education by conducting methodological, empirical and theoretical investigations.

    The thesis draws on the pragmatist philosophy of democratic education as well as on post-structuralist theories of history, antagonism and populism. Methodologically, the thesis make use of the logics of critical explanation framework (LCE) to empirically explore how history classroom practices as well as contemporary right-wing populist discourse operate.

    The results show that the LCE methodology constitutes a viable analytical vocabulary for generating knowledge of the political dimension of history education. Furthermore, the thesis offers empirical knowledge about how and why practices of history education are interchangeably politicised and rendered stable by teachers, students and members of the public. Theoretically, populism, as a discursive logic, is criticised and then reconceptualised into an educative mode by which history teaching practices can be enacted. Collectively, the results provide a comprehensive understanding of the political dimension of history education.

    List of papers
    1. Inquiring into the political dimension of history classroom practices: Suggestions for epistemological criteria and analytical concepts
    Open this publication in new window or tab >>Inquiring into the political dimension of history classroom practices: Suggestions for epistemological criteria and analytical concepts
    2019 (English)In: Historical Encounters: A journal of historical consciousness, historical cultures and history education, E-ISSN 2203-7543, Vol. 6, no 1, p. 15-28Article in journal (Refereed) Published
    Abstract [en]

    In this paper, three epistemological criteria are suggested against which analytical frameworks for studying the political dimension of history classroom practices can be deemed viable. The suggested criteria - (I) the primacy of practice, (II) the primacy of empirical openness and (III) the primacy of the political - are articulated by conducting critical and affirmative readings of previously established concepts, primarily historical consciousness. To clarify their application, the criteria are positioned in relation to the premises and concepts of a potential framework; namely, the logics of critical explanation (Glynos & Howarth, 2007), the viability of which is argued for theoretically and empirically.

    Place, publisher, year, edition, pages
    HERMES History Education Research Network, School of Education, The University of Newcastle, 2019
    Keywords
    History Education, History Wars, Politics, Classroom Practice
    National Category
    Didactics Pedagogy History
    Research subject
    Education; History
    Identifiers
    urn:nbn:se:oru:diva-75848 (URN)000481624600002 ()
    Available from: 2019-08-21 Created: 2019-08-21 Last updated: 2019-09-18Bibliographically approved
    2. Between stability and contingency: A case study of the social, political and fantasmatic logics of Swedish history classroom practice
    Open this publication in new window or tab >>Between stability and contingency: A case study of the social, political and fantasmatic logics of Swedish history classroom practice
    2019 (English)In: Nordidactica: Journal of Humanities and Social Science Education, ISSN 2000-9879, no 1, p. 132-155Article in journal (Refereed) Published
    Abstract [en]

    This study explores the political and ideological workings of history classroom practices enacted in the context of Swedish upper secondary education. Using the post-structuralist logics of critical explanation framework (Glynos & Howarth, 2007), the paper reports on a series of video-recorded observations and outlines the discursive logics found to constitute the studied practices. At the heart of the analysis are the socially shared assumptions, political relationships of us-and-them, and ideological narratives that alternately furnish the history classroom practices with stability and contingency. The results encompass three case-specific logics: (I) a social logic demonstrating that the stability of the studied classroom practices rests on shared assumptions about historical idealism and partial progress, (II) a political logic indicating that the classroom practices are unsettled when students establish temporal equivalence between past and present us-and-them relationships, and (III) a fantasmatic logic showing that teachers and students become ideologically invested in said practices through narratives emphasizing the need to prevent the repetition of past injustices.

    Place, publisher, year, edition, pages
    Karlstad: Karlstads universitet, 2019
    Keywords
    HISTORY DIDACTICS, CLASSROOM PRACTICE, POLITICAL DIMENSION, LOGICS
    National Category
    Didactics
    Research subject
    History; Education
    Identifiers
    urn:nbn:se:oru:diva-73988 (URN)
    Available from: 2019-05-02 Created: 2019-05-02 Last updated: 2019-09-18Bibliographically approved
    3. Right-wing populism and history education: Some insights from a Swedish case study
    Open this publication in new window or tab >>Right-wing populism and history education: Some insights from a Swedish case study
    (English)Manuscript (preprint) (Other academic)
    National Category
    Pedagogy
    Identifiers
    urn:nbn:se:oru:diva-76498 (URN)
    Available from: 2019-09-18 Created: 2019-09-18 Last updated: 2019-09-18Bibliographically approved
    4. Democratic Education in the Mode of Populism
    Open this publication in new window or tab >>Democratic Education in the Mode of Populism
    2017 (English)In: Studies in Philosophy and Education, ISSN 0039-3746, E-ISSN 1573-191X, Vol. 36, no 6, p. 601-613Article in journal (Refereed) Published
    Abstract [en]

    This paper seeks to bring John Dewey’s pragmatist philosophy of democratic education and the public into dialogue with Ernesto Laclau’s theory of populism. Recognizing populism as an integral aspect of democracy, rather than as its antithesis, the purpose of this paper is to provide a theoretical account of populism as being of educational relevance in two respects. First, it argues that the populist logic specifies a set of formal elements by which democratic education could operate as a collective enterprise. Second, it asserts that the notion of populism supplements any congenial understanding of democratic education by bringing political demands, conflicts and affects to the fore. Finally, the paper discusses the risks and possibilities inherent in visualizing populism as an educational modus.

    Place, publisher, year, edition, pages
    Springer, 2017
    Keywords
    Populism, Democratic education, The public, Demands, Affect, Antagonism
    National Category
    Pedagogy Philosophy
    Research subject
    Education
    Identifiers
    urn:nbn:se:oru:diva-54881 (URN)10.1007/s11217-017-9564-5 (DOI)000412461800001 ()2-s2.0-85009848651 (Scopus ID)
    Note

    Funding Agency:

    LUN (The Board of Teacher Education) at Örebro University

    Available from: 2017-01-20 Created: 2017-01-20 Last updated: 2019-09-18Bibliographically approved
  • Zekavat, Amir Reza
    Örebro University, School of Science and Technology.
    Application of X-ray Computed Tomography for Assessment of Additively Manufactured Products2019Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Additive Manufacturing (AM) is a novel method for fabricating parts from three-dimensional model data, usually by joining materials in layer upon layer fashion. The freedom of design in this method has resulted in new possibilities for fabrication of parts with complex geometries. Manufacturing nearnet- shape parts as well as geometrically complex components such as periodic cellular structures that are used in lightweight structural components, has made AM a promising manufacturing method in industry.

    Despite the numerous advantages of the AM methods, the imperfections associated with the manufacturing processes has limited the application of additively manufactured parts. Porosity and surface texture of AM parts especially those fabricated using Laser Powder Bed Fusion (LPBF) methods, have been studied in this thesis. It was observed that the mentioned imperfections have a considerable impact on the mechanical performance of thin-wall structures that are the constituting units of surface-based periodic cellular structures. The quality of internal structure in components fabricated using Fused Deposition Modelling (FDM) and its effect on the strength of those components were the other issues investigated in this thesis.

    In order to investigate the mechanical strength of AM parts, as the result of mentioned mesoscale imperfections, appropriate evaluation methods that are capable of quantitatively assessing these imperfections are required. X-ray Computed Tomography (CT), a non-destructive evaluation method, has shown high capabilities for providing useful and reliable geometrical information of both internal and external features of AM components. The challenges involved with the application of CT for assessment of AM component are also studied in this thesis.

    Apart from the contributions of this thesis on how CT may be used in AM field, the results of this thesis has provided insight into the design process of cellular structures. This thesis has provided essential information about the strength dependency of thin-walls as the result of mesoscale fabrication defects and how these defects are dependent on the selected material and design of the structure.

    List of papers
    1. Measurement of internal features in additive manufactured components by the use of computed tomography
    Open this publication in new window or tab >>Measurement of internal features in additive manufactured components by the use of computed tomography
    2015 (English)Conference paper, Published paper (Refereed)
    Abstract [en]

    Additive manufacturing (AM) is a set of manufacturing processes currently in rapid development providing designersnew freedoms in their designs. One distinct difference from other manufacturing methods is the ability to makecomplex internal features which can be of great benefit for applications in many industries. These features can bechannels, cavities, filled or not filled with powder, parts in parts etc. In order for these advantages to be industriallyapplicable there is a need for robust verification methods for these internal features. X-ray computed tomography (CT)holds the promise of being one of the few powerful tools for non-destructive imaging of internal features. In this work,selective laser sintering (SLS) has been used to manufacture parts of a complex geometry containing internal cavities.The test specimens were manufactured in two different materials; Polyamide12 and Titanium (Ti6Al4V). In order toinvestigate the limitations and controllability of the process, the dimensions of the internal cavities were determinedby a correlation of tactile measurements on external features and CT-data. The results were also compared to computeraided design (CAD) data. This work provides some insight concerning part accuracy of today’s frontier of AM systemsand the ability to measure and characterize internal features using CT.

    Place, publisher, year, edition, pages
    German Society for Non-Destructive Testing, 2015
    Keywords
    Computed tomography, additive manufacturing, internal features, selective laser melting
    National Category
    Mechanical Engineering
    Research subject
    Mechanical Engineering
    Identifiers
    urn:nbn:se:oru:diva-47801 (URN)
    Conference
    Digital Industrial Radiology and Computed Tomography (DIR 2015), Ghent, Belgium, June 22-25, 2015
    Available from: 2016-01-27 Created: 2016-01-27 Last updated: 2019-08-27Bibliographically approved
    2. Investigating the effect of fabrication temperature on mechanical properties of fused deposition modelling parts using X-ray computed tomography
    Open this publication in new window or tab >>Investigating the effect of fabrication temperature on mechanical properties of fused deposition modelling parts using X-ray computed tomography
    2019 (English)In: The International Journal of Advanced Manufacturing Technology, ISSN 0268-3768, E-ISSN 1433-3015, Vol. 100, no 1-4, p. 287-296Article in journal (Refereed) Published
    Abstract [en]

    Fused deposition modeling (FDM) is one of the most common additive manufacturing (AM) techniques for fabricating prototypes as well as functional parts. In this technique, several parameters may influence the part quality and consequently mechanical properties of fabricated components. In this paper, an experimental investigation on effects of fabrication temperature as one of the influential parameters on mechanical properties of manufactured parts is presented. A series of specimens fabricated at temperatures ranging from 180 to 260 C were used for this investigation. X-ray computed tomography (CT) was used in order to non-destructively analyze the internal geometry of the specimens especially the bond between extruded filaments. Finally, the specimens were subjected to a uniaxial tensile load for evaluation of mechanical properties. The results showed that the specimens fabricated at lower temperatures have relatively lower tensile strength despite their considerably higher strain at break. In addition, the specimens fabricated at higher temperature range had significantly higher tensile strength because of the better bond between extruded filaments. The different mechanical responses were highly related to the internal geometry of the specimens and not necessarily the porosity. CT showed great potential as a non-destructive tool for investigation and development of FDM process.

    Place, publisher, year, edition, pages
    Springer London, 2019
    Keywords
    Fused deposition modeling, Computed tomography, Polylactic acid, Additive manufacturing
    National Category
    Other Mechanical Engineering
    Research subject
    Mechanical Engineering
    Identifiers
    urn:nbn:se:oru:diva-69110 (URN)10.1007/s00170-018-2664-8 (DOI)000455946000025 ()2-s2.0-85053832455 (Scopus ID)
    Available from: 2018-09-28 Created: 2018-09-28 Last updated: 2019-08-27Bibliographically approved
    3. Effect of X-ray Computed Tomography Magnification on Surface Morphology Investigation of Additive Manufacturing Surfaces
    Open this publication in new window or tab >>Effect of X-ray Computed Tomography Magnification on Surface Morphology Investigation of Additive Manufacturing Surfaces
    2018 (English)In: 8th Conference on Industrial Computed Tomography, 2018Conference paper, Published paper (Refereed)
    Abstract [en]

    Additive manufacturing (AM) in the last decade has become a widespread manufacturing process. The possibilities that such technologies have provided for manufacturing of complex geometries compared to conventional manufacturing processes has made them popular in many branches of industry. Despite the advantages of these methods, there are limiting issues which needs to be thoroughly investigated. A limiting factor, especially for powder bed AM parts is their undesired surface finish. AM surfaces can be investigated using various methods such as optical or tactile methods, however for complex AM surfaces they are incapable of capturing all details such as deep valleys at surface level. X-ray computed tomography (CT), can provide 3D information of complex AM surfaces and does not have limitations that line of sight and tactile methods have. There are several parameters in CT investigation, which can potentially alter the obtained results. Depending on the CT magnification at which the data is acquired the result specifically surface level detail might be affected. The aim of this study is to investigate the effect of different CT magnifications on surface texture measurement of additively manufactured surfaces. Surface features, including highest peaks and deepest valleys contributing to maximum and minimum thickness of specimen from different magnifications were compared with each other. The result shows that, the lower magnification scans underestimate both peak and valley measurements in comparison to the highest magnification scan. Measurement of valleys and re-entrant features were underestimated at more considerable level. The results from this study provide some understanding regarding surface morphology assessment of AM parts and the level of detail which can be expected depending on the CT magnification.

    Keywords
    Computed tomography, Additive manufacturing, Surface texture
    National Category
    Mechanical Engineering
    Research subject
    Mechanical Engineering
    Identifiers
    urn:nbn:se:oru:diva-65426 (URN)
    Conference
    iCT conference 2018, Wels, Austria, 7 February, 2018
    Available from: 2018-03-02 Created: 2018-03-02 Last updated: 2019-08-27Bibliographically approved
    4. Effect of X-Ray Computed Tomography Magnification on Porosity Analysis of Additively Manufactured Parts
    Open this publication in new window or tab >>Effect of X-Ray Computed Tomography Magnification on Porosity Analysis of Additively Manufactured Parts
    2018 (English)In: World PM2018 Congress Proceedings, 2018Conference paper, Published paper (Refereed)
    Abstract [en]

    X-ray computed tomography has been widely used for inspection of parts manufactured using additive manufacturing (AM) and powder metallurgy (PM). The ability of this method to non-destructively evaluate the porosity content of parts fabricated using AM and PM has made it a reliable method for such inspection. The results obtained from this method are highly dependent on CT acquisition parameters such as the magnification (resolution) at which the part has been scanned. Depending on the size of the parts the scan might need to be performed at lower magnifications which results in loss of information for porosity analysis. Therefore the effect of changing CT magnification on the obtained porosity of an additively manufactured specimen made of AlSi10Mg is investigated in this study. The specimen was scanned at various magnifications resulting in data sets with different resolutions. The porosity content was measured for each data set and the results showed that the porosity measurement using CT is highly dependent on the magnification (resolution) at which the data sets are acquired. The results from this study provided essential information about the porosity content which should be expected depending on the CT magnification.

    Keywords
    Porosity, X-ray computed tomography (CT), Additive manufacturing (AM)
    National Category
    Mechanical Engineering
    Research subject
    Mechanical Engineering
    Identifiers
    urn:nbn:se:oru:diva-69047 (URN)
    Conference
    2018 World Congress on Powder Metallurgy (WORLDPM2018), Beijing, China, September 16-20, 2018
    Available from: 2018-09-25 Created: 2018-09-25 Last updated: 2019-08-28Bibliographically approved
    5. An experimental approach to investigatethe influential parameters on mechanical strength of AlSi10Mgthin-wall structures manufactured by selective laser melting
    Open this publication in new window or tab >>An experimental approach to investigatethe influential parameters on mechanical strength of AlSi10Mgthin-wall structures manufactured by selective laser melting
    Show others...
    (English)Manuscript (preprint) (Other academic)
    National Category
    Other Mechanical Engineering
    Identifiers
    urn:nbn:se:oru:diva-75923 (URN)
    Available from: 2019-08-27 Created: 2019-08-27 Last updated: 2019-08-27Bibliographically approved
    6. Surface Characterization of Additively Manufactured AlSi10Mg andTi6Al4V thin-wall Structures using X-Ray Computed Tomography
    Open this publication in new window or tab >>Surface Characterization of Additively Manufactured AlSi10Mg andTi6Al4V thin-wall Structures using X-Ray Computed Tomography
    (English)Manuscript (preprint) (Other academic)
    National Category
    Other Mechanical Engineering
    Identifiers
    urn:nbn:se:oru:diva-75922 (URN)
    Available from: 2019-08-27 Created: 2019-08-27 Last updated: 2019-08-27Bibliographically approved
  • Dmytryshyn, Andrii
    Department of Computing Science, Umeå University, Umeå, Sweden.
    Structure preserving stratification of skew-symmetric matrix polynomials2015Report (Other academic)
    Abstract [en]

    We study how elementary divisors and minimal indices of a skew-symmetric matrix polynomial of odd degree may change under small perturbations of the matrix coefficients. We investigate these changes qualitatively by constructing the stratifications (closure hierarchy graphs) of orbits and bundles for skew-symmetric linearizations. We also derive the necessary and sufficient conditions for the existence of a skew-symmetric matrix polynomial with prescribed degree, elementary divisors, and minimal indices.

  • Dmytryshyn, Andrii
    et al.
    Department of Computing Science, Umeå University, Umeå, Sweden.
    Dopico, Froilán M.
    Departamento de Matemáticas, Universidad Carlos III de Madrid.
    Generic matrix polynomials with fixed rank and fixed degree2016Report (Other academic)
  • Dmytryshyn, Andrii
    et al.
    Department of Computing Science and HPC2N, Umeå. University, Umeå, Sweden.
    Johansson, Stefan
    Department of Computing Science and HPC2N, Umeå. University, Umeå, Sweden.
    Kågström, Bo
    Department of Computing Science and HPC2N, Umeå. University, Umeå, Sweden.
    Codimension computations of congruence orbits of matrices, symmetric and skew-symmetric matrix pencils using Matlab2013Report (Other academic)
    Abstract [en]

    Matlab functions to work with the canonical structures for congru-ence and *congruence of matrices, and for congruence of symmetricand skew-symmetric matrix pencils are presented. A user can providethe canonical structure objects or create (random) matrix examplesetups with a desired canonical information, and compute the codi-mensions of the corresponding orbits: if the structural information(the canonical form) of a matrix or a matrix pencil is known it isused for the codimension computations, otherwise they are computednumerically. Some auxiliary functions are provided too. All thesefunctions extend the Matrix Canonical Structure Toolbox.

  • Dmytryshyn, Andrii
    et al.
    Department of Computing Science and HPC2N, Umeå University, Umeå, Sweden.
    Johansson, Stefan
    Department of Computing Science and HPC2N, Umeå University, Umeå, Sweden.
    Kågström, Bo
    Department of Computing Science and HPC2N, Umeå University, Umeå, Sweden.
    Van Dooren, Paul
    Universite catholique de Louvain, Belgium.
    Geometry of spaces for matrix polynomial Fiedler linearizations2015Report (Other academic)
    Abstract [en]

    We study how small perturbations of matrix polynomials may change their elementary divisors and minimal indices by constructing the closure hierarchy graphs (stratifications) of orbits and bundles of matrix polynomial Fiedler linearizations. We show that the stratifica-tion graphs do not depend on the choice of Fiedler linearization which means that all the spaces of the matrix polynomial Fiedler lineariza-tions have the same geometry (topology). The results are illustrated by examples using the software tool StratiGraph.

  • Dmytryshyn, Andrii
    et al.
    Department of Computing Science and HPC2N, Umeå University, Umeå, Sweden.
    Kågström, Bo
    Department of Computing Science and HPC2N, Umeå University, Umeå, Sweden.
    Orbit closure hierarchies of skew-symmetric matrix pencils2014Report (Other academic)
    Abstract [en]

    We study how small perturbations of a skew-symmetric matrix pencil may change its canonical form under congruence. This problem is also known as the stratification problem of skew-symmetric matrix pencil orbits and bundles. In other words, we investigate when the closure of the congruence orbit (or bundle) of a skew-symmetric matrix pencil contains the congruence orbit (or bundle) of another skew-symmetric matrix pencil. This theory relies on our main theorem stating that a skew-symmetric matrix pencil A-λB can be approximated by pencils strictly equivalent to a skew-symmetric matrix pencil C-λD if and only if A-λB can be approximated by pencils congruent to C-λD.

  • Dmytryshyn, Andrii
    et al.
    Dept. Computing Science, Umeå University, Umeå, Sweden.
    Johansson, Stefan
    Dept. Computing Science, Umeå University, Umeå, Sweden.
    Kågström, Bo
    Dept. Computing Science, Umeå University, Umeå, Sweden.
    Canonical structure transitions of system pencils2015Report (Other academic)
    Abstract [en]

    We investigate the changes under small perturbations of the canonical structure information for a system pencil (A B C D) − s (E 0 0 0), det(E) ≠ 0, associated with a (generalized) linear time-invariant state-space system. The equivalence class of the pencil is taken with respect to feedback-injection equivalence transformation. The results allow to track possible changes under small perturbations of important linear system characteristics.

  • Dmytryshyn, Andrii
    et al.
    Örebro University, School of Science and Technology. Department of Computing Science, Umeå University, Umeå, Sweden.
    Johansson, Stefan
    Department of Computing Science, Umeå University, Umeå, Sweden.
    Kågström, Bo
    Department of Computing Science, Umeå University, Umeå, Sweden.
    Van Dooren, Paul
    Department of Mathematical Engineering, Université catholique de Louvain, Louvain-la-Neuve, Belgium.
    Geometry of Matrix Polynomial Spaces2019In: Foundations of Computational Mathematics, ISSN 1615-3375, E-ISSN 1615-3383Article in journal (Refereed)
    Abstract [en]

    We study how small perturbations of general matrix polynomials may change their elementary divisors and minimal indices by constructing the closure hierarchy (stratification) graphs of matrix polynomials’ orbits and bundles. To solve this problem, we construct the stratification graphs for the first companion Fiedler linearization of matrix polynomials. Recall that the first companion Fiedler linearization as well as all the Fiedler linearizations is matrix pencils with particular block structures. Moreover, we show that the stratification graphs do not depend on the choice of Fiedler linearization which means that all the spaces of the matrix polynomial Fiedler linearizations have the same geometry (topology). This geometry coincides with the geometry of the space of matrix polynomials. The novel results are illustrated by examples using the software tool StratiGraph extended with associated new functionality.

  • Bernhard, Irene
    et al.
    University West, Trollhättan, Sweden.
    Gustafsson, Mariana
    Linköping University , Linköping, Sweden.
    Hedström, Karin
    Örebro University, Örebro University School of Business.
    Seyferin, Johanna
    Linköping University, Linköping, Sweden.
    Whilborg, Elin
    Linköping University, Linköping, Sweden.
    A Digital Society For All?: Meanings, Practices and Policies for Digital Diversity2019In: 52nd Hawaii International Conference on System Sciences (HICSS-52): Emerging Topics in Digital Government, Honolulu, HI, USA, 2019, p. 3067-3076Conference paper (Refereed)
    Abstract [en]

     The concept of digital divides has been on the agenda in research and policy making for at least the last 20 years. But it is still, a challenge to grasp this concept that is so elusive and transforming. Inclusion, access and equality are still key values for democraticgovernance and must be addressed in particular whenforming and contributing to a digital government. This paper seeks to intervene in current debates on digital divides and digital inclusion by analyzing two cases of responses among street-level public administration in relation to e-government services in Sweden. The case studies are strategically chosen and conducted in national agencies and in local public libraries. Three lines of contributions are discussed, firstly theimportance to care for equality secondly the need to see the non-users, and thirdly to discuss the potential of putting focus on digital diversity.

  • Denk, Thomas
    et al.
    Örebro University, School of Humanities, Education and Social Sciences.
    Hedström, Karin
    Örebro University, Swedish Business School at Örebro University.
    Karlsson, Fredrik
    Örebro University, Örebro University School of Business.
    Medborgarna och automatiserat beslutsfattande2019In: Storm och Stiltje: SOM-institutets 74:e forskarantologi / [ed] Ulrika Andersson, Björn Rönnerstrand, Patrik Öhberg och Annika Bergström, Göteborg: SOM-institutet , 2019, 1, p. 183-196Chapter in book (Other (popular science, discussion, etc.))
    Abstract [sv]

    I allt större utsträckning införs automatiserat beslutsfattande i offentlig sektor. Det innebär att datorer ersätter handläggare som beslutsfattare. Flera av de ärenden som avgörs med automatiserat beslutsfattande berör medborgarna. Detta kapitel undersöker om medborgarna är medvetna om denna förändring och hur de tror att besluten förändras när datorer ersätter handläggare som beslutsfattare. Resultaten visar att det är en minoritet (20 procent) som har kännedom sedan tidigare om automatiserat beslutsfattande i offentlig sektor. En majoritet tror att besluten förvisso blir mer opartiska när datorer istället för handläggare fattar beslut, men inte att besluten blir mer tillförlitliga. De tror också att automatiska beslut kommer att ta mindre hänsyn till människornas situation och minska insynen i beslutsfattandet. De som har kännedom om automatiserat beslutsfattande är mer positiva när det gäller beslutens opartiskhet och tillförlitlighet, men anser i samma utsträckning som de utan kännedom att besluten medför mindre hänsynstagande till människors situation och minskad insyn i beslutsfattandet.

  • Chen, Ariel
    et al.
    Örebro University, School of Humanities, Education and Social Sciences.
    Eriksson, Göran
    Örebro University, School of Humanities, Education and Social Sciences.
    The mythologization of protein: a Multimodal Critical Discourse Analysis of snacks packaging2019In: Food, Culture and Society, ISSN 1528-9796, Vol. 22, no 4, p. 423-445Article in journal (Refereed)
    Abstract [en]

    This paper examines how protein snacks are marketed as good food choices through their packaging and how these packages reproduce a discourse – what we see as a myth – of the benefits of high protein intake. Research shows that consumers believe high protein food has a positive impact on physical performance and body composition, although there is very little evidence of this. Protein foods and beverages are nevertheless one of the fastest growing sectors in the food market and we now see food companies exploit peoples beliefs by adding protein to food that was formerly seen as unhealthy. Adopting a Multimodal Critical Discourse Analysis (MCDA) we look in detail at the packaging of a group of snacks that are usually high in fat and sugar but now appear as good food options, particularly through accentuating the protein content. The analysis shows that the packages market these products as an outcome of scientific modern technology, but this is done in playful and comforting ways. This goes along with neoliberal ideas about wellness and demands of an active lifestyle. From these findings, we discuss the limitations of existing regulations as marketing shape and capitalize on discourses of health.

  • Aspenberg, David
    et al.
    DYNAmore Nordic AB, Linköping, Sweden.
    Asnafi, Nader
    Örebro University, School of Science and Technology.
    Topology optimization of a U-bend tool using LS-TaSC2019In: Proc. of the 12th European LS-DYNA Conference 2019, 2019Conference paper (Refereed)
    Abstract [en]

    Metal additive manufacturing of stamping tool and die has a potential of reducing the lead time of forming processes, while at least not increasing the cost. As a part of a research project exploring the possibilities to use this type of tool manufacturing techniques, topology optimization using LS-TaSC has been utilized and one example case is presented in this paper, namely a U‑bend tool. This paper looks at the possible benefits from using nonlinear simulations in topology optimization, the effect of chosen target mass fraction value, the interpretations needed of optimal results and the effects on the formed specimen after using an optimized tool. Results show that accounting for the time dependent pressure on the tool, rather than applying a form of equivalent static load, gives a different optimal topology. Some manual interpretations of the optimal results are also recommended, as well as studying the effects on the specimen from removing material on the tool side.

  • Svensson, Tomas
    Institutionen för kultur och kommunikation, Karlstads universitet, Karlstad, Sweden; Institutionen för nordiska språk, Stockholms universitet, Stockholm, Sweden.
    Skriftbruk på en bilverkstad: En studie av en fordonsmekanikers användning av text under en arbetsdag2005Report (Other academic)
  • Sataøen, Hogne L.
    Örebro University, School of Humanities, Education and Social Sciences.
    Sub-sector branding and nation branding: the case of higher education2019In: Corporate Communications. An International Journal, ISSN 1356-3289, E-ISSN 1758-6046, Vol. 24, no 3, p. 425-438Article in journal (Refereed)
    Abstract [en]

    Purpose: This paper concerns public sub-sector branding within the higher education (HE) system. The purpose of this paper is to investigate how public sub-sector branding within HE is organized and how it is influenced by the use of national values, traits and characteristics.

    Design/methodology/approach: The study relies on two data sources: first, the paper benefits from a data set of one-stop web-portals for HE from the 23 countries listed in Times Higher Education’s top-60 universities ranking. Second, it builds on a sample and brief overview of Norway’s sub-sector branding of its HE sector.

    Findings: Expert authorities within the HE sector are legally and organizationally responsible for sub-sector branding, and they establish coordinated and coherent web-portals. In practice, however, nation-branding concerns are influencing on how the HE sub-sector is branded. The paper concludes with a discussion of democratic implications, and points to paradoxes arising from the use of national clichés and characteristics in this highly international sub-sector of the public realm.

    Originality/value: The paper informs discussions about public sub-sector branding within HE, a phenomenon that thus far has not been systematically studied. The practical applications of such a study are evident, as branding is becoming more important in the public sector in general, and in HE in particular.

  • Sundin, Per-Ola
    Örebro University, School of Medical Sciences.
    A life-course approach to chronic kidney disease: risks and consequences2019Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Successful primary prevention of chronic kidney disease (CKD) relies on understanding the pathways leading to established disease, including how they extend over the life-course. Projects in this thesis examine risk factors for CKD and consequences of impaired kidney function from a life-course perspective using routinely collected health-data in Swedish registers and research cohort data from the United Kingdom.

    The main findings regarding risk factors for CKD are, that markers of health and development determined at conscription assessment in adolescence, independently predict diagnosis of end-stage renal disease in middle age. We also identified a persistent increased risk of CKD following hospital admission with pneumonia in adulthood with highest magnitude risks in years immediately following infection, but still statistically significantly raised more than 15 years after the pneumonia episode. Our main findings relevant to predicting the consequences of impaired kidney function are that creatinine and cystatin C used clinically to estimate kidney function (estimated glomerular filtration rate, eGFR) have associations with increased mortality risk independent of GFR measured with an exogenous filtration marker (mGFR). If cystatin C and creatinine are combined, adding mGFR does not improve mortality risk prediction. Another important finding is that moderately reduced eGFR is only associated with a statistically significant increased mortality risk among individuals in the lowest third of the distribution of grip strength in a general population sample followed for 4-5 years, after adjustment for potential confounding factors.

    These results highlight the importance of adopting a life-course perspective when studying risk factors for CKD, since these associations can extend over different stages in the life-course. When assessing increased mortality risk associated with measures of GFR, combining cystatin and creatinine improves risk prediction. Potential effect modification across subgroups, including by grip strength, should be considered.

    List of papers
    1. Predictors in Adolescence of ESRD in Middle-Aged Men
    Open this publication in new window or tab >>Predictors in Adolescence of ESRD in Middle-Aged Men
    2014 (English)In: American Journal of Kidney Diseases, ISSN 0272-6386, E-ISSN 1523-6838, Vol. 64, no 5, p. 723-729Article in journal (Refereed) Published
    Abstract [en]

    Background: Identification of predictors of end-stage renal disease (ESRD) in adolescence could provide intervention targets and improve understanding of the cause.

    Study Design: Register-based nested case-control study.

    Setting & Participants: A cohort of all Swedish male residents born from 1952 through 1956 who attended mandatory military conscription examinations in late adolescence was used to identify 534 cases and 5,127 controls matched by birth year, county, and vital status.

    Predictor: Erythrocyte sedimentation rate (ESR), proteinuria, blood pressure, and body mass index (BMI) in late adolescence.

    Outcomes: ESRD (defined here as dialysis therapy, kidney transplantation, surgical procedures creating long-term access for dialysis therapy, or chronic kidney disease stage 5) from 1985 through 2009.

    Measurements: Physical working capacity and cognitive function score in late adolescence. Head of household's occupation and household crowding measured as person-per-room ratio from the 1960 census when participants were children.

    Results: Proteinuria is associated notably with future ESRD, with an adjusted OR of 7.72 (95% CI, 3.94-15.14; P < 0.001) for trace or positive dipstick findings. ESR has a dose-dependent association with ESRD with an adjusted OR of 2.07 (95% CI, 1.14-3.75; P = 0.02) for ESR > 15 mm/h. Hypertension is associated strongly with future ESRD with an OR of 3.97 (95% CI, 2.08-7.59; P < 0.001) for grade 2 hypertension and higher. Elevated BMI is associated statistically significantly with increased ESRD risk with an OR of 3.53 (95% CI, 2.04-6.11; P < 0.001) for BMI >= 30 compared with 18.5-<25kg/m(2).

    Limitations: The study was limited to men, with no initial estimation of glomerular filtration rate, and information on smoking was unavailable.

    Conclusions: ESR, proteinuria, BMI, and blood pressure in late adolescence are independent predictors of ESRD in middle-aged men. This highlights the long natural history and importance of adopting a life-course approach when considering the cause of chronic kidney disease. (C) 2014 by the National Kidney Foundation, Inc.

    Place, publisher, year, edition, pages
    Saunders Elsevier, 2014
    Keywords
    End-stage renal disease (ESRD), erythrocyte sedimentation rate (ESR), proteinuria, body mass index (BMI), hypertension, adolescence, inflammation, disease trajectory, risk factor, etiology, kidney disease progression
    National Category
    Urology and Nephrology
    Identifiers
    urn:nbn:se:oru:diva-39453 (URN)10.1053/j.ajkd.2014.06.019 (DOI)000344237900012 ()25124945 (PubMedID)2-s2.0-84908479380 (Scopus ID)
    Note

    Funding Agencies:

    UK Economic and Social Research Council RES-596-28-0001  ES/J019119/1

    Research Committee of Orebro County Council OLL-213581  OLL-333371

    Available from: 2014-12-10 Created: 2014-12-10 Last updated: 2019-09-19Bibliographically approved
    2. Measured glomerular filtration rate does not improve prediction of mortality by cystatin C and creatinine
    Open this publication in new window or tab >>Measured glomerular filtration rate does not improve prediction of mortality by cystatin C and creatinine
    Show others...
    2017 (English)In: Nephrology, Dialysis and Transplantation, ISSN 0931-0509, E-ISSN 1460-2385, Vol. 32, no 4, p. 663-670Article in journal (Refereed) Published
    Abstract [en]

    Background: Cystatin C may add explanatory power for associations with mortality in combination with other filtration markers, possibly indicating pathways other than glomerular filtration rate (GFR). However, this has not been firmly established since interpretation of associations independent of measured GFR (mGFR) is limited by potential multicollinearity between markers of GFR. The primary aim of this study was to assess associations between cystatin C and mortality, independent of mGFR. A secondary aim was to evaluate the utility of combining cystatin C and creatinine to predict mortality risk.

    Methods: Cox regression was used to assess the associations of cystatin C and creatinine with mortality in 1157 individuals referred for assessment of plasma clearance of iohexol.

    Results: Since cystatin C and creatinine are inversely related to mGFR, cystatin C - 1 and creatinine - 1 were used. After adjustment for mGFR, lower cystatin C - 1 (higher cystatin C concentration) and higher creatinine - 1 (lower creatinine concentration) were independently associated with increased mortality. When nested models were compared, avoiding the potential influence of multicollinearity, the independence of the associations was supported. Among models combining the markers of GFR, adjusted for demographic factors and comorbidity, cystatin C - 1 and creatinine - 1 combined explained the largest proportion of variance in associations with mortality risk ( R 2  = 0.61). Addition of mGFR did not improve the model.

    Conclusions: Our results suggest that both creatinine and cystatin C have independent associations with mortality not explained entirely by mGFR and that mGFR does not offer a more precise mortality risk assessment than these endogenous filtration markers combined.

    Place, publisher, year, edition, pages
    Oxford University Press, 2017
    Keywords
    GFR, creatinine, cystatin C, epidemiology, prognosis
    National Category
    Urology and Nephrology
    Identifiers
    urn:nbn:se:oru:diva-57361 (URN)10.1093/ndt/gfx004 (DOI)000401057000013 ()28340079 (PubMedID)2-s2.0-85019091905 (Scopus ID)
    Note

    Funding agencies:

    Research Committee of the Örebro County Council (OLL-330601, OLL-408481 and OLL-506561)

    Available from: 2017-05-21 Created: 2017-05-21 Last updated: 2019-09-19Bibliographically approved
    3. Hospital admission with pneumonia and subsequent persistent risk of chronic kidney disease: national cohort study
    Open this publication in new window or tab >>Hospital admission with pneumonia and subsequent persistent risk of chronic kidney disease: national cohort study
    2018 (English)In: Clinical Epidemiology, ISSN 1179-1349, E-ISSN 1179-1349, Vol. 10, p. 971-979Article in journal (Refereed) Published
    Abstract [en]

    Background: Although acute onset kidney complications associated with severe infections including pneumonia are well characterized, little is known about possible subsequent delayed risk of chronic kidney disease (CKD).

    Patients and methods: Associations between hospital admission with pneumonia in adulthood and raised risks of subsequent CKD were evaluated in a cohort of all male residents in Sweden born from 1952 to 1956 (n=284,198) who attended mandatory military conscription examinations in late adolescence (n=264,951) and were followed up through 2009. CKD and pneumonia were identified using Swedish national registers, and their associations were evaluated using Cox regression. Excluding the first year, the subsequent period was divided into <= 5, > 5-<= 15, and > 15 years after hospital admission with pneumonia. Follow-up ended on the date of first incident diagnosis of kidney disease, death, emigration, or December 31, 2009, whichever occurred first.

    Results: During a median follow-up of 36.7 (interquartile range 35.3-37.9) years from late adolescence, 5,822 men had an inpatient pneumonia diagnosis without contemporaneous kidney disease. Among exposed men, 136 (2.3%) were later diagnosed with CKD compared with 2,749 (1.2%) of the unexposed. The adjusted hazard ratio for CKD in the first year after the first episode of pneumonia was 14.55 (95% confidence interval, 10.41-20.32), identifying early onset kidney complications and possibly pre-existing undiagnosed CKD. Starting follow-up 1 year after pneumonia to reduce the potential influence of surveillance bias and the risk of reverse causation, the adjusted hazard ratio for CKD in the first 5 years of follow-up was 5.20 (95% confidence interval, 3.91-6.93) and then attenuated with increasing time.

    Conclusion: Pneumonia among inpatients is associated with a persistently increased risk for subsequent CKD, with the highest risk during the years immediately after pneumonia. Health care professionals should be aware of this period of heightened risk to facilitate early diagnosis and secondary preventive interventions.

    Place, publisher, year, edition, pages
    DOVE Medical Press Ltd., 2018
    Keywords
    Pneumonia, kidney disease, end-stage renal disease, inflammation, cohort study
    National Category
    Public Health, Global Health, Social Medicine and Epidemiology
    Identifiers
    urn:nbn:se:oru:diva-68653 (URN)10.2147/CLEP.S169039 (DOI)000441779100001 ()30147376 (PubMedID)2-s2.0-85057756705 (Scopus ID)
    Note

    Funding Agency:

    UK Economic and Social Research Council  RES-596-28-0001  ES/JO19119/1

    Available from: 2018-08-31 Created: 2018-08-31 Last updated: 2019-09-19Bibliographically approved
    4. Grip strength modifies the association between estimated glomerular filtration rate and all-cause mortality
    Open this publication in new window or tab >>Grip strength modifies the association between estimated glomerular filtration rate and all-cause mortality
    (English)Manuscript (preprint) (Other academic)
    National Category
    General Practice
    Identifiers
    urn:nbn:se:oru:diva-75760 (URN)
    Available from: 2019-08-13 Created: 2019-08-13 Last updated: 2019-08-13Bibliographically approved
  • Memedi, Mevludin
    et al.
    Örebro University, Örebro University School of Business.
    Aghanavesi, Somayeh
    th Computer Engineering, Dalarna University, Sweden.
    Bergquist, Filip
    Department of Pharmacology, Gothenburg University, Sweden.
    Nyholm, Dag
    Department of Neuroscience, Uppsala University, Sweden (.
    Senek, Marina
    Department of Neuroscience, Uppsala University, Sweden.
    A multimodal sensor fusion platform for objective assessment of motor states in Parkinson's disease2019In: IEEE-EMBS INTERNATIONAL CONFERENCE ON BIOMEDICAL AND HEALTH INFORMATICS (BHI 19), 2019Conference paper (Refereed)
    Abstract [en]

    This study proposes a platform to objectively assess motor states in Parkinson’s disease (PD) using sensor technology and machine learning. The platform uses sensor information gathered during standardized motor tasks and fuses them in a data-driven manner to produce an index representing motor states of the patients. After investigating clinimetric properties of the platform it was found that the platform had good validity and responsiveness to treatment, which are essential for developing systems to individualize treatments.

  • Scander, Henrik
    Örebro University, School of Hospitality, Culinary Arts & Meal Science.
    Food and beverage combinations: Sommeliers' perspectives and consumer patterns in Sweden2019Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    As beverage intake can play an important part of choosing a healthy diet, it is important to increase awareness of the contribution of beverages to overall energy intake for consumers.

    The professional sommelier has for a long time served as a cultural intermediary, providing guests with good food and beverage combinations. Here, a clear gap was identified between health and the current practice of sommellerie.

    The aim of the thesis is to develop knowledge about food and beverage combinations by investigating the consumption patterns of a Swedish population. The thesis will also explore the sociocultural understanding of taste and the practices of professional sommeliers.

    The understanding of energy contribution and beverage patterns were linked to health, which led to the suggestion that sommeliers should gain from nutritional knowledge – in particular focused on beverage. Furthermore, sommeliers talk about ‘good’ combinations as a matter of refined taste, acquired through long-term practical engagement with wine and food. Foods expressed as ‘unrefined’, could also be becoming legitimate as cultural capital when combined with the right beverage. Also, performing food and beverage combinations was a routinised activity surrounded by rules, competence and materiality and was driven by the will to satisfy guests. It was also a part of shaping of sommeliers’ identity through a continuous striving for improved competence.

    Altogether, nutritional knowledge, acquisition of taste, goods reevaluation and legitimacy as well as identity shaping gives sommeliers an extended knowledge when combining food and beverage, providing guests with not only the desired taste but also the possibility of serving healthier combinations. This extends the range of workplaces for sommeliers in the restaurant industry, but also to elderly care, hospitals and the like, as all people in those environments should have the opportunity to enjoy good meals according to both taste and health considerations.

    List of papers
    1. Beverage consumption patterns and energy contribution from beverages per meal type: results from a national dietary survey in Sweden
    Open this publication in new window or tab >>Beverage consumption patterns and energy contribution from beverages per meal type: results from a national dietary survey in Sweden
    Show others...
    2018 (English)In: Public Health Nutrition, ISSN 1368-9800, E-ISSN 1475-2727, Vol. 21, no 18, p. 3318-3327Article in journal (Refereed) Published
    Abstract [en]

    Objective: Many studies of food intake have been performed and published in Sweden, but to our knowledge no studies have extensively explored the beverage consumption of the Swedish adult population. The present study aimed to describe the beverage consumption and the contribution of beverage energy (including alcohol energy) to total energy intake according to gender, region of living, meal type and day for a Swedish adult population.

    Design: National dietary survey Riksmaten (2010–2011), collected by the Swedish National Food Agency.

    Setting: Sweden.

    Subjects: A total of 1682 participants (57 % women) reported dietary intake data during four consecutive days, specified by portion size, meal, time point, day of the week and venue. Meals were categorized as breakfast, lunch, dinner and ‘other’.

    Result: The beverage reported to be consumed the most was water (ml/d), followed by coffee. Men had a higher consumption of juice, soft drinks, beer, spirits and low-alcohol beer, while the consumption of tea and water was higher for women. For both genders, milk contributed the most to beverage energy intake. Energy percentage from beverages was higher at lunch and dinner during weekends for both genders. Participants from the biggest cities in Sweden had a higher consumption of wine for both genders and tea for men than participants from other regions.

    Conclusions: A considerable part of total energy intake was contributed by beverages, especially for men. Beverages can contribute to a more enjoyable diet, but at the same time provide energy, sugar and alcohol in amounts that do not promote optimal health.

    Place, publisher, year, edition, pages
    Cambridge University Press, 2018
    Keywords
    Beverage consumption, Food habits, National dietary surveys, Weekday weekend, Adults, Alcoholic intake, Riksmaten
    National Category
    Nutrition and Dietetics Social Sciences Interdisciplinary
    Research subject
    Culinary Arts and Meal Science
    Identifiers
    urn:nbn:se:oru:diva-69439 (URN)10.1017/S1368980018002537 (DOI)000454696300004 ()30295227 (PubMedID)2-s2.0-85055257210 (Scopus ID)
    Note

    Funding Agency:

    Örebro University 

    Available from: 2018-10-09 Created: 2018-10-09 Last updated: 2019-09-19Bibliographically approved
    2. Food and beverage dinner combinations, patterns among Swedish adults
    Open this publication in new window or tab >>Food and beverage dinner combinations, patterns among Swedish adults
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    2018 (English)In: International Journal of Gastronomy and Food Science, ISSN 1878-450X, E-ISSN 1878-4518, Vol. 14, p. 20-26Article in journal (Refereed) Published
    Abstract [en]

    Introduction: Since the taste preferences of food and beverage combinations are considered subjective properties and have been studied in several different ways, mainly within the field of sensory science, this study contributes to the field of food and beverage combination studies by using self-reported eating habits.

    Objective: This article explores the relationships between food and beverage combinations, recorded by a Swedish adult population.

    Method: Analyses were made using data from the national dietary survey, Riksmaten (2010–2011), performed by the Swedish National Food Agency. A total of 1753 Swedish adults (53% women) aged 18–80 contributed dietary intake data during four consecutive days. All dinner choices were categorized into beverage categories and food categories. Combinations between beverage and food categories were analyzed by using cross tabulation. Correlation coefficients for non-parametric variables were used to determine the association power. Predictive factors for more important beverage and food combinations were explored by logistic regression analysis.

    Results: Water was the most frequent choice in combination with all food categories. The results also showed that alcoholic beverages are present in two of the three strongest food and beverage correlations, the spirits drinks and white wine. The most important predictive factors were where the dinner took place for non-alcoholic combinations (OR: 4.33; 95% CI: 2.28–8.21) and age and employment for alcoholic combinations (OR > 2; p < 0.05).

    Conclusion: Our results show correlations in reported consumption of food and beverage, which explain the occurrences of specific patterns of combinations of food and beverage. More studies on choice of beverage are needed to describe the patterns of intake, in order to understand the mechanisms behind beverage choice, in different settings, cultural situations and lifestyle backgrounds. Combinations in everyday life are described here and these are not always so sophisticated, rather building on availability than on optimal taste combinations. Our findings can offer an understanding of some common every-day choices to culinary professionals, useful for their guidance of food and beverage pairing, to enhance restaurant experiences.

    Place, publisher, year, edition, pages
    Elsevier, 2018
    Keywords
    Drink, Consumption, Wine pairing, Commensality, Food habits, National dietary surveys, Alcohol intake, Riksmaten
    National Category
    Social Sciences Interdisciplinary
    Research subject
    Culinary Arts and Meal Science
    Identifiers
    urn:nbn:se:oru:diva-69446 (URN)10.1016/j.ijgfs.2018.08.003 (DOI)000452329100004 ()2-s2.0-85053321018 (Scopus ID)
    Available from: 2018-10-09 Created: 2018-10-09 Last updated: 2019-08-19Bibliographically approved
    3. Acquiring taste: Sommeliers on ‘good’ food and beverage combinations
    Open this publication in new window or tab >>Acquiring taste: Sommeliers on ‘good’ food and beverage combinations
    (English)Manuscript (preprint) (Other academic)
    National Category
    Social Sciences Interdisciplinary
    Research subject
    Culinary Arts and Meal Science
    Identifiers
    urn:nbn:se:oru:diva-75833 (URN)
    Available from: 2019-08-19 Created: 2019-08-19 Last updated: 2019-08-19Bibliographically approved
    4. Sommeliers’ food and beverage combinations: social conventions and professional identity
    Open this publication in new window or tab >>Sommeliers’ food and beverage combinations: social conventions and professional identity
    (English)Manuscript (preprint) (Other academic)
    National Category
    Social Sciences Interdisciplinary
    Research subject
    Culinary Arts and Meal Science
    Identifiers
    urn:nbn:se:oru:diva-75834 (URN)
    Available from: 2019-08-19 Created: 2019-08-19 Last updated: 2019-09-19Bibliographically approved
  • Zetterqvist, Jenny
    Örebro University, School of Law, Psychology and Social Work.
    Visibility at risk for women as rights-holders: a study with regard to a refugee camp context2019Licentiate thesis, monograph (Other academic)
    Abstract [en]

    By taking the recognition of persons as rights-holders in the framework of international human rights into account, this study directs its attention to women in protracted refugee situations, restricted to stay in camps also when their human rights are at risk due to various forms of violence. The question in focus is the following: To what extent may there be a risk that women in a refugee camp context, distinguished by a protracted refugee situation, do not become visible as rights-holders and entrusted to act with regard to international human rights and the problem of violence against women, especially domestic violence?

    The research process has taken the form of a continuous dialogue with the material for the study, a dialogue directing attention to material from an established international human rights system on one hand and material dealing with a local refugee camp context on the other. The study finds its entry-point primarily in the context of the international human rights treaty the Convention on the Elimination of All Forms of Discrimination against Women (CEDAW), including the work of the CEDAW Committee as a treaty body, and also the international mandate of the Special Rapporteur on Violence against Women, its causes and consequences. Due to the presence of a variety of justice mechanisms in the camps, certain aspects of a local customary law tradition are also addressed. The existence of an unlocked legal door for women to take actions in family law matters, or in cases of gender-based violence is something not to take for granted. The hindrances could lie deep in the legal system practiced. It could be an issue of not being entrusted by the structure of the system to act in person, as woman, with a legal capacity and by own right before the law.

    The study underlines the importance of sharpened awareness and analysis of the presence of a complex legal context and a variety of customary law traditions in the camps. It appears from the study that for women in a refugee camp to be able to act as rights-holders and claim human rights as laid down in human rights conventions, the issue of visibility is not only a matter of training in presenting facts on the ground in front of local authorities. To be visible in addressing the problem of gender-based violence and gaps in protection of human rights in a refugee camp context is first and foremost an issue for women to be recognized the right to act in legal matters. It is an issue of having the freedom of expression and to be recognized the social and legal status to act in their own capacity in front of the local legal structures, including the local customary law context, and to address international human rights monitoring mechanisms, such as the CEDAW Committee or the Special Rapporteur.

  • Englund, Hans
    et al.
    Örebro University, Örebro University School of Business.
    Gerdin, Jonas
    Örebro University, Örebro University School of Business.
    Performative technologies and teacher subjectivities: A conceptual framework2019In: British Educational Research Journal, ISSN 0141-1926, E-ISSN 1469-3518, Vol. 45, no 3, p. 502-517Article in journal (Refereed)
    Abstract [en]

    Critical educational literature suggests that an increased reliance upon performative technologies is currently transforming the very foundations from which teacher subjectivities are constructed. Arguably though, the number of studies pointing to this risk or tendency is considerably larger than the ones theorising why this should be the case. Further, in those cases where the relationship between performative technologies and teacher subjectivities is theorised, the psychological mechanisms that the technologies appeal to are seldom brought to the fore. Based on this, the purpose of this article is to theorise the psychological mechanisms that performative technologies appeal to and work through, by means of identifying, systematising and elaborating extant understandings of such mechanisms in the critical educational literature. The results are presented in the form of a conceptual framework (referred to as the CMIS-framework) which suggests that one and the same performative technology may play many different roles, where each such role appeals to and works through a particular psychological mechanism. Importantly, depending on the type of psychological mechanism that is appealed to, the CMIS-framework suggests that this will lead to teachers (un)- consciously conducting particular forms of subjectivising work upon themselves, here referred to as compliance, mirroring, identification and self-realisation (CMIS).

  • Källström, Åsa
    et al.
    Örebro University, School of Law, Psychology and Social Work.
    Gómez Jansson, Sabina
    Från USA till Sverige: Reflektioner över Kids' Club-metodens resa2019Report (Other academic)
  • Geidne, Susanna
    et al.
    Örebro University, School of Health Sciences.
    Jerlinder, Kajsa
    Högskolan i Gävle, Gävle, Sweden.
    Jämlik idrott och funktionsnedsättningar2019In: Idrotten och (o)jämlikheten: I medlemmarnas eller samhällets intresse? / [ed] Johan R Norberg, Centrum för idrottsforskning , 2019, p. 133-148Chapter in book (Other (popular science, discussion, etc.))
    Abstract [sv]

    Hur kan föreningsidrotten passa alla oavsett förutsättningar? Forskning visar att föreningar måste bli bättre på att anpassa ordinarie aktiviteter, snarare än att skilja grupper åt. En jämlik idrottsrörelse kräver en mångfald av aktiviteter – alla vinner på att all organiserad idrott inte ser likadan ut.

  • Öhman, Anna
    Institutionen för pedagogiska studier, Karlstads universitet, Karlstad, sweden.
    Twist and shape: Feedback practices within creative subject content of hairdressing education2018In: Vocations and Learning, ISSN 1874-785X, E-ISSN 1874-7868, Vol. 11, no 3, p. 425-448Article in journal (Refereed)
    Abstract [en]

    The aim of this study is to explore feedback practices and how such actions of assessment emerge from embodied participation in classroom interactions between teachers and students. Using video recordings of teacher and student interactions in hairdressing education, I look at how feedback practices within creative subject content are produced between the participants as social actions situated in interaction, using conversation analysis. Feedback is contingent upon an embodied moment-to-moment monitoring and collaboration between the teacher and student, and is organized as a trajectory from problem detection through exploration until a final solution is found. Feedback within creative subject content is displayed as a multifarious exploration of embodied as well as materially situated professional knowledge. Overall, the findings show how feedback is mutually produced in a process, making tacit dimensions of hairdressers’ knowing explicit. This allows for improving the quality of the work over time in a trajectory of problem solving phases gradually displaying how to assess creative subject content of the material product worked on.

  • Öhman, Anna
    Institutionen för pedagogiska studier, Karlstads universitet, Karlstad, Sweden.
    Cykler och loopar i Salongen: En studie av återkoppling i frisörklassrummet2015Licentiate thesis, monograph (Other academic)
    Abstract [en]

    The interest in this empirical study aims at assessment, more precisely feedback as part of ordinary activities within hairdressing education. The study investigates feedback practices related to assessment of knowing during production, with focus on communication between student and teacher. Communication is regarded as interactively constructed and is investigated through a multimodal social semiotic perspective which implies studying verbal as well as nonverbal resources in meaning making. Speech and body movements are not subordinate to each other and are studied as contributing in communication on their own terms.

    Video observations were used to investigate feedback practices in the hairdressing classroom, during a couple of lessons when last year’s students received customers for various treatments. From one hour recording, a selection was made showing communication between student and teacher with joint focus of attention during production. The selection is based on the assumption of feedback as interactively constructed and represented in a multimodal way.

    The analysis of the feedback practice shows a multifaceted result, since each interaction between a student and a teacher is unique. Nevertheless, a recurrent pattern of feedback construction could be discerned. Three important functions of feedback were distinguished, that of control, instruction and evaluation. Furthermore, these functions interact in temporal processes of cycles and loops. The core of feedback practice is found within the loop, where questions and wonders from the student are brought into a joint investigation.

  • Öhman, Anna
    Institutionen för pedagogiska studier, Karlstads universitet, Karlstad, Sweden.
    Återkoppling i interaktion: En studie av klassrumsbaserad bedömning i frisörutbildningen2017Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    The present dissertation concerns social organization of feedback in ongoing hairdressing education. The central aim is to explore feedback between teacher and student in multimodal interaction within classroom assessment, as co-production of action and student’s participation. Classroom assessment and feedback are understood as social actions situated in interaction.

    The empirical data consists of video recordings from two vocational schools. From 31 hours of video material, selections of feedback interactions were made. At first, teacher and student communication in feedback cycles and loops was analysed from a social semiotic perspective. Secondly, examples of student initiated feedback loops were analysed from a conversation analytic perspective. Thirdly, a single case of a teacher and a student interacting through feedback related to creative subject content was analysed from a conversation analytic perspective. 

    The analyses show the importance of collaborative use of artefacts and embodied communication in the production of mutual understanding; opening for student initiatives in actions of assessment as well as feedback. Silence and body position were found to be important resources giving the student space to display concern. Participation in feedback practices within creative subject content emerged in a trajectory of problem detection to problem solving, resulting in tacit dimensions of hairdressers’ knowing made explicit.

    The findings indicate the importance of taking a participatory perspective on multimodal interaction when exploring actions of assessment and feedback between teacher and student. This study shows how feedback is not only given from the teacher, but also locally produced as a collaborative practice between teachers and students, displaying tacit dimensions of professional knowledge and subject content.

  • Öhman, Anna
    Institutionen för pedagogiska studier, Karlstads universitet, Karlstad, Sweden.
    Kameraanvändning i videoobservation2016In: Kapet (elektronisk), E-ISSN 2002-3979, Vol. 12, no 2, p. 75-85Article in journal (Other academic)
    Abstract [en]

    Olika kameror ger fler perspektiv och således ett rikare datamaterial. Denna metodartikel beskriver erfarenheter av användning av huvudkamera och handkamera i videoobservationer och diskuterar hur användning av fler kameror kompletterar varandra. Datamaterialet består av 20 timmars film varav 10 timmar även har spelats in med huvudkamera. Sammantaget visar datainsamlingsmetoden hur huvudkameran erbjuder möjligheter att komma nära det som deltagarna talar om och gör. Kameran följer bärarens rörelser och blick på ett sätt som en handkamera inte lyckas fånga. I de studerade aktiviteterna, ger huvudkameran närbilder av materialet deltagarna arbetar med samt av hur de riktar sin uppmärksamhet och vad de talar om. Eftersom inspelning görs samtidigt både med huvudkamera och handkamera, kan materialet i olika filmerna jämföras. Användningen av huvudkamera har inte bara fördelen av att ge närbilder, utan den tillför detaljer från det arbetsmaterial deltagarna interagerar med och i, vilket inte synliggörs med enbart handkameran. Däremot har handkameran fördelen att kunna avbilda fler deltagare samtidigt och den kontext de befinner sig i. Artikeln konkluderar med hur inspelning med fler rörliga kameror är en lämplig metod för videoobservation eftersom det visar studieobjektet ur fler perspektiv.

  • Öhman, Anna
    Institutionen för pedagogiska studier, Karlstads universitet, Karlstad, Sweden.
    Nyckelkompetenser eller professionellt omdöme?: En kritisk diskussion av nyliberala influenser inom yrkesutbildning2017In: Kapet (elektronisk), E-ISSN 2002-3979, Vol. 13, no 1, p. 59-73Article in journal (Other academic)
    Abstract [sv]

    Artikeln, med sitt utbildningssociologiska perspektiv, har sin bakgrund i empiriska studier där intresset är riktat mot klassrumsbaserad bedömning, närmare bestämt återkoppling som en del av den dagliga undervisningen. Data konstruerades genom videoobservationer i frisörklassrummet. Analyserna av återkopplingspraktikerna synliggör lärares professionella yrkeskunnande steg för steg, koordinerade med och i respons till eleverna. Dessa empiriskt baserade resultat ställs i kontrast till neoliberalt färgad utbildningspolitik, som framkommer ur några centrala dokument och artiklar, där professionellt yrkeskunnande reduceras och yrkesutbildning generaliseras till instrumentella nyckelkompetenser och anställningsbarhet.

  • Holster, Savanne
    et al.
    Örebro University, School of Medical Sciences.
    Lindqvist, Carl Mårten
    Örebro University, School of Medical Sciences.
    Repsilber, Dirk
    Örebro University, School of Medical Sciences.
    Salonen, Anne
    Human Microbiome Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland.
    de Vos, Willem
    Human Microbiome Research Program, Faculty of Medicine, University of Helsinki, Helsinki, Finland; 3Laboratory of Microbiology, Wageningen University and Research Centre, Wageningen, the Netherlands.
    König, Julia
    Örebro University, School of Medical Sciences.
    Brummer, Robert Jan
    Örebro University, School of Medical Sciences.
    The Effect of Allogenic Versus Autologous Fecal Microbiota Transfer on Symptoms, Visceral Perception and Fecal and Mucosal Microbiota in Irritable Bowel Syndrome: A Randomized Controlled Study2019In: Clinical and Translational Gastroenterology, ISSN 2155-384X, E-ISSN 2155-384X, Vol. 10, no 4, article id e00034Article in journal (Refereed)
    Abstract [en]

    OBJECTIVES: Fecal microbiota transfer (FMT) is suggested as a potential treatment for patients with irritable bowel syndrome (IBS). We aimed to study the effect of allogenic and autologous FMT on IBS symptoms, visceral sensitivity, and compositional changes in fecal and mucosa-adherent microbiota.

    METHODS: Seventeen patients with IBS were randomized either to receive fecal material from a healthy donor (allogenic) or to receive their own fecal material (autologous). The fecal material was administered into the cecum by whole colonoscopy after bowel cleansing.

    RESULTS: No significant differences were found between the allogenic and the autologous FMT regarding symptom scores. However, symptom scores of patients receiving allogenic fecal material significantly decreased after FMT compared with baseline (P 5 0.02), which was not the case in the autologous group (P50.16). Visceral sensitivity was not affected except for a small beneficial effect on urge scores in the autologous group (P < 0.05). While both fecal and mucosa-adherent microbiota of some patients shifted to their respective donor’s fecal microbiota, some patients showed no relevant microbial changes after allogenic FMT. Large compositional shifts in fecal and mucosa-adherent microbiota also occurred in the autologous group.

    CONCLUSIONS: This study showed that a single FMT by colonoscopy may have beneficial effects in IBS; however, the allogenic fecal material was not superior to the autologous fecal material. This suggests that bowel cleansing prior to the colonoscopy and/or processing of the fecal material as part of the FMT routine contribute to symptoms and gut microbiota composition changes in IBS.

  • Björkvall, Anders
    et al.
    Örebro University, School of Humanities, Education and Social Sciences.
    Westberg, Gustav
    Örebro University, School of Humanities, Education and Social Sciences.
    Van Meerbergen, Sara
    Stockholms universitet, Stockholm, Sweden.
    Anslagstavlan: Vägvisare till det lokala lärandets semiotiska landskap?2019In: Svenskans beskrivning 36: Förhandlingar vid trettiosjätte sammankomsten. Uppsala 25–27 oktober 2017 / [ed] Bianchi, Marco, Håkansson, David, Melander, Björn, Pfister, Linda, Westman, Maria , Östman, Carin, Uppsala: Uppsala universitet, 2019, p. 37-52Conference paper (Refereed)
  • Andersson, Annika
    et al.
    Örebro University, Örebro University School of Business.
    Hedström, Karin
    Örebro University, Örebro University School of Business.
    Wihlborg, Elin
    School of Management and Engineering, Linköping University, Linköping, Sweden.
    Automated Decision-Making and Legitimacy in Public Administration2018In: Presented at SWEG 2018. The 15th Scandinavian Workshop on E-Government., 2018Conference paper (Other academic)
  • Mårdh, Andreas
    Örebro University, School of Humanities, Education and Social Sciences.
    Between stability and contingency: A case study of the social, political and fantasmatic logics of Swedish history classroom practice2019In: Nordidactica: Journal of Humanities and Social Science Education, ISSN 2000-9879, no 1, p. 132-155Article in journal (Refereed)
    Abstract [en]

    This study explores the political and ideological workings of history classroom practices enacted in the context of Swedish upper secondary education. Using the post-structuralist logics of critical explanation framework (Glynos & Howarth, 2007), the paper reports on a series of video-recorded observations and outlines the discursive logics found to constitute the studied practices. At the heart of the analysis are the socially shared assumptions, political relationships of us-and-them, and ideological narratives that alternately furnish the history classroom practices with stability and contingency. The results encompass three case-specific logics: (I) a social logic demonstrating that the stability of the studied classroom practices rests on shared assumptions about historical idealism and partial progress, (II) a political logic indicating that the classroom practices are unsettled when students establish temporal equivalence between past and present us-and-them relationships, and (III) a fantasmatic logic showing that teachers and students become ideologically invested in said practices through narratives emphasizing the need to prevent the repetition of past injustices.

  • Johansson, Sara
    Örebro University, School of Law, Psychology and Social Work.
    Att etablera ett fält. En emotionell praktik i gränslandet mellan ångest och eufori2018In: Etnografisk forskning i praktiken: Reflektioner från pågående avhadlingsprojekt / [ed] Gruber, Sabine & Gustafsson, Kristina, Linköping: Linköping University Electronic Press, 2018, p. 34-42Chapter in book (Other academic)
    Abstract [sv]

    I denna text identifierar och diskuterar jag några av de utmaningar som kan förknippas med etnografisk forskning. Ambitionen med texten är att utveckla mina subjektiva erfarenheter till mer allmännyttiga lärdomar och därmed röra mig från det specifika till det generella. Läsaren introduceras först kort till den studie som kapitlet bygger på. Därefter följer en etnografisk berättelse och utifrån denna lyfts ett antal utmärkande drag och utmaningar med etnografiskt fältarbete, som på olika sätt kan utmana – och utmatta – forskaren. De teman som är centrala i texten är i) problemet med ”opportunistic sampling”; ii) beroendet av nyckelpersoner eller nyckelrespondenter, det vill säga personer som visar sig särskilt värdefulla för att lotsa en vidare till nya sammanhang och introducera nya kontakter (Atkins & Hammersley, 2007); iii) forskningspersonernas drivkraft och vilja att delta; iv) att härbärgera och balansera i samtalen.

    Texten bygger på erfarenheter gjorda i mitt avhandlingsprojekt, i vilket jag studerar hur konflikterna i Syrien och Irak får återverkningar i svenska lokalsamhällen. De konflikter som avses är de som kan sägas ha utbrutit i samband med den arabiska våren, även om de har sina rötter längre bak i tiden. Fältarbetet genomfördes huvudsakligen under 2016, samt delar av 2017.

  • Bejerot, Eva
    et al.
    Örebro University, Örebro University School of Business.
    Hasselbladh, Hans
    Örebro University, Örebro University School of Business.
    Forsberg, Tina
    Sociologiska institutionen, Stockholms universitet, Stockholm, Sverige.
    Parding, Karolina
    Luleå tekniska universitet, Luleå, Sverige.
    Sehlstedt, Therese
    Luleå tekniska universitet, Luleå, Sverige.
    Westerlund, Joakim
    Psykologiska institutionen, Stockholms universitet, Stockholm, Sverige.
    Förberedd för läraryrket? Lärare under 40 år av reformer2018In: Arbetsmarknad & Arbetsliv, ISSN 1400-9692, Vol. 24, no 1-2, p. 7-26Article in journal (Refereed)
    Abstract [sv]

    Studien belyser hur gymnasielärare retrospektivt uppfattar att de förberetts för sitt yrke under lärarutbildningen. Enkätsvar från 1554 gymnasielärare kategoriserades efter den tidsperiod då de examinerades. Frågan om hur väl förberedda de nyexaminerade lärarna var för sitt yrke kopplas till de nationella reformer som styrde lärarutbildningen under den period som läraren studerade. Medan utbildningen i praktisk yrkeskunskap uppfattas ha försämrats över tid, har andra områden förbättrats. Lärosäte hade inte något samband med respondenternas svarsmönster. Slutsatsen är att utbildningsreformerna har samband med förändringar i utbildningens måluppfyllelse, att förbereda lärarstudenter för sitt yrke, samt att utbildningens anpassning till yrkets krav försämrats över tid.

  • Bejerot, Eva
    et al.
    Örebro University, Örebro University School of Business.
    Lampi, Laura
    Centret för utbildningsevaluering, Helsingfors universitet, Helsingfors, Finland.
    Forsberg, Tina
    Sociologiska institutionen, Stockholms universitet, stockholm, Sverige.
    Ahtiainen, Raisa
    Centret för utbildningevaluering, Helsingfors universitet, Helsingfors, Finland.
    Björk, Lisa
    Institutet för stressmedicin, Västra Götalandsregionen & Institutionen för sociologi och arbetsvetenskap, Göteborgs universitet, Göteborg, Sverige.
    Hotulainen, Risto
    Centret för utbildningevaluering, Helsingfors universitet, Helsningfors, Finland.
    Parding, Karolina
    Avdelningen för arbetsvetenskap, Luleå tekniska universitet, Luleå, Sverige.
    Sehlstedt, Therese
    Avdelningen för arbetsvetenskap, Luleå tekniska universitet, Luleå, Sverige.
    Wastensson, Gunilla
    Arbets- och miljömedicin, Göteborgs universitet, Göteborg, Sverige.
    Nyexaminerade om lärarutbildningen i Sverige och i Finland2018In: Arbetsmarknad & Arbetsliv, ISSN 1400-9692, Vol. 24, no 3-4, p. 66-84Article in journal (Refereed)
    Abstract [sv]

    En professionsutbildning utmärks av en spänning mellan teoretisk kunskap och praktisk yrkeskunskap. Vi vet dock inte mycket om hur en professionsutbildning bäst utformas för att förbereda studenter inför yrket. Utifrån tre enkäter, två i Sverige och en i Finland, analyseras nyexaminerade lärares uppfattning om hur förberedda de var för sitt arbete efter lärarutbildningen. Området metodik och praktik hade tydligast samband med känslan av att vara väl förberedd. I flera områden var de finska respondenterna mer kritiska än de svenska. De många positiva omdömena om den finska lärarutbildningen gjorde att vi förväntat oss ett mer positivt resultat i den finska studien.

  • Borg, Markus
    et al.
    RISE Research Institutes of Sweden AB, Lund, Sweden.
    Chatzipetrou, Panagiota
    Örebro University, Örebro University School of Business. Blekinge Institute of Technology, Karlskrona, Sweden.
    Wnuk, Krzysztof
    Blekinge Institute of Technology, Karlskrona, Sweden.
    Alégroth, Emil
    Blekinge Institute of Technology, Karlskrona, Sweden.
    Gorschek, Tony
    Blekinge Institute of Technology, Karlskrona, Sweden.
    Papatheocharous, Efi
    RISE Research Institutes of Sweden AB, Lund, Sweden.
    Shah, Syed
    iZettle, Stockholm, Sweden.
    Axelsson, Jakob
    RISE Research Institutes of Sweden AB, Lund, Sweden.
    Selecting Software Component Sourcing Options: Detailed Survey Description and Analysis2018Report (Other academic)
    Abstract [en]

    Component-based software engineering (CBSE) is a common approach to develop and evolve contemporary software systems. When evolving a system based on components, make-or-buy decisions are frequent, i.e., whether to develop components internally or to acquire them fromexternal sources. In CBSE, several different sourcing options are available: 1) developing software in-house, 2) outsourcing development, 3) buying commercial-off-the-shelf software, and 4) integrating open source software components. Unfortunately, there is little available research on howorganizations select component sourcing options (CSO) in industry practice. In this work, we seek to contribute empirical evidence to CSO selection. Method: We conduct a cross-domain survey on CSO selection in industry, implemented as an online questionnaire. Based on 188 responses, we find that most organizations consider multiple CSOs during software evolution, and that the CSO decisions in industry are dominated by expert judgment. When choosing between candidate components, functional suitability acts as an initial filter, then reliability is the most important quality. We stress that future solution-oriented work on decision support has to account for the dominance of expert judgment in industry. Moreover, we identify considerable variation in CSO decision processes in industry. Finally, we encourage software development organizations to reflect on their decision processes when choosing whether to make or buy components, and we recommend using our survey for a first benchmarking.