oru.sePublications
123 51 - 100 of 108
rss atomLink to result list
Permanent link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
  • Axelsson, Tobias
    Örebro University, School of Humanities, Education and Social Sciences.
    När män möts som pappor: Fadrandets politik och praktik i det jämställda och pappavänliga Sverige2019Doctoral thesis, monograph (Other academic)
    Abstract [en]

    This thesis analyses how fathering is done and how fathers are constructed through the separate organising of men as fathers in meeting places for fathers on parental leave in Sweden. The study is located within the Swedish gender regime, characterised by its dual-earner/dual-carer model, progressive parenthood and daddy politics, and universally-oriented parenting support, making it a relatively gender-equal and father-friendly society.

    Theoretically and methodologically, the thesis draws on a feminist perspective. It uses ‘doing gender’ theory, and is informed by critical realism. The material is based on 25 observations at two fathering spaces, seven semi-structured interviews with fathers, and six policy documents on parenting support. Qualitative content analysis is used to analyse the material.

    The findings show: first, meeting places for fathers on parental leave can be understood as fathering spaces. Second, these fathering spaces are child-oriented settings and constitute somewhat of an exception within gender-neutral gender regimes. Third, fathering spaces function as transitional sites in which fathers manage different aspects of responsibility and relations to their own selves, to children, to mothers, and to other fathers. Fourth, three approaches to separate organising of men as fathers are identified: a) anti-separate; b) pro-separate; and c) gender paradoxical. The identified arguments for separate organising can be located along two parallel continua: one that stretches from individual to collective argumentation, and another that stretches from general to gender-specific argumentation.

    The thesis contributes to research on childcare and masculinities, and fathers’ experiences of parental leave, and to knowledge about separate organising of men as fathers. It also contributes to research and policy debates on daddy politics and parenting support by critically discussing fathering in terms of autonomy, dependence, and masculinity politics.

  • Torpsten, Ann-Christin
    et al.
    Linnæus University, Växjö, Sweden.
    Warren, Anne Reath
    Stockholm University, Stockholm, Sweden.
    Straszer, Boglárka
    Dalarna University, Borlänge, Sweden.
    Lindahl, Camilla
    Stockholm University, Stockholm, Sweden.
    Siekkinen, Frida
    University of Gothenburg, Gothenburg, Sweden.
    Svensson, Gudrun
    Linnæus University, Växjö, Sweden.
    Rosén, Jenny
    Dalarna University, Borlänge, Sweden; Stockholm University, Stockholm, Sweden.
    Allard, Karin
    Örebro University, School of Humanities, Education and Social Sciences.
    Wedin, Åsa
    Dalarna University, Borlänge, Sweden.
    Transspråkande: en holistisk syn på språk, språkanvändning och språkdidaktik2016In: Lisetten, ISSN 1101-5128, no 2, p. 32-33Article in journal (Other (popular science, discussion, etc.))
  • Kardeby, Caroline
    Örebro University, School of Medical Sciences.
    Studies of platelet signalling and endothelial cell responses using unique synthetic drugs2019Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Haemostasis is a complex and tightly regulated process which protects us from bleeding. Platelets are essential for maintained haemostasis. Under normal conditions platelets are calmed by antithrombotic substances release by the endothelium. During vascular injury, the platelets will activate and form a haemostatic plug to prevent bleeding. Inflammatory processes like atherosclerosis can disturb the haemostatic balance and lead to severe consequences like myocardial infarction and stroke. Inhibition of platelets and coagulation are common treatments to prevent unwanted blood clot formation. There is a great need for increased knowledge on the mechanisms of thrombosis and characterisation of new substances with possible therapeutic potential. This thesis used unique synthetic drugs to study platelet signalling and endothelial responses. Paper I showed that both sulfated polysaccharides from seaweed and synthetic glycopolymers which mimic their chemical properties caused platelet activation.

    Paper II elucidated the molecular mechanism underlying platelet activation by sulfated glycopolymers and polysaccharides. We found that human platelet activation took place via the Platelet endothelial aggregation receptor 1 (PEAR1), while mouse platelet activation was mainly via C-type lectin-like receptor 2. Aggregation was supported by Glycoprotein Ibα in both species.

    Paper III showed the effect of synthetic glycopolymers and natural polysaccharides on cultured human endothelial cells. We found that both the glycopolymers and polysaccharides caused a proinflammatory response after 24h.

    In Paper IV, the effect of a synthetic purine analogue with a nitrate ester motif was studied. We found that the purine analogue reduced platelet functions by inhibiting Rho-associated protein kinase (ROCK).

    This thesis describes unique synthetic drugs that can be used for further studies of the mechanisms underlying the biological processes of thrombosis and inflammation. The synthetic glycopolymers can be used to further elucidate the physiological role of PEAR1, a potential future therapeutic target.

    List of papers
    1. Fucoidan-Mimetic Glycopolymers as Tools for Studying Molecular and Cellular Responses in Human Blood Platelets
    Open this publication in new window or tab >>Fucoidan-Mimetic Glycopolymers as Tools for Studying Molecular and Cellular Responses in Human Blood Platelets
    Show others...
    2017 (English)In: Macromolecular Bioscience, ISSN 1616-5187, E-ISSN 1616-5195, Vol. 17, no 2, article id UNSP 1600257Article in journal (Refereed) Published
    Abstract [en]

    The marine sulfated polysaccharide fucoidan displays superior ability to induce platelet aggregation compared to other sulfated polysaccharides. As such, it is an attractive tool for studying molecular and cellular responses in activated platelets. The heterogeneous structure, however, poses a problem in such applications. This study describes the synthesis of sulfated α-l-fucoside-pendant poly(methacryl amides) with homogeneous structures. By using both thiol-mediated chain transfer and reversible addition-fragmentation chain transfer polymerization techniques, glycopolymers with different chain lengths are obtained. These glycopolymers show platelet aggregation response and surface changes similar to those of fucoidan, and cause platelet activation through intracellular signaling as shown by extensive protein tyrosine phosphorylation. As the platelet activating properties of the glycopolymers strongly mimic those of fucoidan, this study concludes these fucoidan-mimetic glycopolymers are unique tools for studying molecular and cellular responses in human blood platelets.

    Place, publisher, year, edition, pages
    Weinheim, Germany: Wiley-VCH Verlagsgesellschaft, 2017
    Keywords
    biological applications of polymers; biomimetic; radical polymerization; reversible addition fragmentation chain transfer; structure-property relations
    National Category
    Medical Biotechnology (with a focus on Cell Biology (including Stem Cell Biology), Molecular Biology, Microbiology, Biochemistry or Biopharmacy)
    Identifiers
    urn:nbn:se:oru:diva-52179 (URN)10.1002/mabi.201600257 (DOI)000394592600012 ()27616165 (PubMedID)2-s2.0-84987653303 (Scopus ID)
    Note

    Funding Agency:

    AFA Insurance, VR Treatments of the Future grant

    Available from: 2016-09-21 Created: 2016-09-14 Last updated: 2019-05-06Bibliographically approved
    2. Synthetic glycopolymers and natural fucoidans cause human platelet aggregation via PEAR1 and GPIbα
    Open this publication in new window or tab >>Synthetic glycopolymers and natural fucoidans cause human platelet aggregation via PEAR1 and GPIbα
    Show others...
    2019 (English)In: Blood advances, ISSN 2473-9529, Vol. 3, no 3, p. 275-287Article in journal (Refereed) Published
    Abstract [en]

    Fucoidans are sulfated fucose-based polysaccharides that activate platelets and have pro- and anticoagulant effects; thus, they may have therapeutic value. In the present study, we show that 2 synthetic sulfated α-l-fucoside-pendant glycopolymers (with average monomeric units of 13 and 329) and natural fucoidans activate human platelets through a Src- and phosphatidylinositol 3-kinase (PI3K)-dependent and Syk-independent signaling cascade downstream of the platelet endothelial aggregation receptor 1 (PEAR1). Synthetic glycopolymers and natural fucoidan stimulate marked phosphorylation of PEAR1 and Akt, but not Syk. Platelet aggregation and Akt phosphorylation induced by natural fucoidan and synthetic glycopolymers are blocked by a monoclonal antibody to PEAR1. Direct binding of sulfated glycopolymers to epidermal like growth factor (EGF)-like repeat 13 of PEAR1 was shown by avidity-based extracellular protein interaction screen technology. In contrast, synthetic glycopolymers and natural fucoidans activate mouse platelets through a Src- and Syk-dependent pathway regulated by C-type lectin-like receptor 2 (CLEC-2) with only a minor role for PEAR1. Mouse platelets lacking the extracellular domain of GPIbα and human platelets treated with GPIbα-blocking antibodies display a reduced aggregation response to synthetic glycopolymers. We found that synthetic sulfated glycopolymers bind directly to GPIbα, substantiating that GPIbα facilitates the interaction of synthetic glycopolymers with CLEC-2 or PEAR1. Our results establish PEAR1 as the major signaling receptor for natural fucose-based polysaccharides and synthetic glycopolymers in human, but not in mouse, platelets. Sulfated α-l-fucoside-pendant glycopolymers are unique tools for further investigation of the physiological role of PEAR1 in platelets and beyond.

    Place, publisher, year, edition, pages
    American Society of Hematology, 2019
    National Category
    Medical Biotechnology (with a focus on Cell Biology (including Stem Cell Biology), Molecular Biology, Microbiology, Biochemistry or Biopharmacy) Hematology
    Identifiers
    urn:nbn:se:oru:diva-72478 (URN)10.1182/bloodadvances.2018024950 (DOI)000458442500007 ()30700416 (PubMedID)2-s2.0-85060943358 (Scopus ID)
    Funder
    Knowledge Foundation
    Note

    Funding Agencies:

    BHF  PG/16/53/32242  RG/13/18/30563 

    Deutsche Forschungsgemeinschaft  DFG: Eb 177/14-1 

    Fonds voor Wetenschappelijk Onderzoek Vlaanderen grant  G0A6514N 

    Available from: 2019-02-14 Created: 2019-02-14 Last updated: 2019-06-18Bibliographically approved
    3. Sulfated glycopolymers and polysaccharides regulate inflammation-related proteins in human vascular endothelial cells
    Open this publication in new window or tab >>Sulfated glycopolymers and polysaccharides regulate inflammation-related proteins in human vascular endothelial cells
    (English)Manuscript (preprint) (Other academic)
    National Category
    Other Basic Medicine
    Identifiers
    urn:nbn:se:oru:diva-74033 (URN)
    Available from: 2019-05-06 Created: 2019-05-06 Last updated: 2019-05-06Bibliographically approved
    4. A novel purine analogue bearing nitrate ester prevents platelet activation by ROCK activity inhibition
    Open this publication in new window or tab >>A novel purine analogue bearing nitrate ester prevents platelet activation by ROCK activity inhibition
    Show others...
    (English)Manuscript (preprint) (Other academic)
    National Category
    Other Basic Medicine
    Identifiers
    urn:nbn:se:oru:diva-74034 (URN)
    Available from: 2019-05-06 Created: 2019-05-06 Last updated: 2019-05-06Bibliographically approved
  • Santini, Marina
    et al.
    RISE Research Institutes of Sweden, Sweden.
    Jönsson, Arne
    RISE Research Institutes of Sweden, Sweden; Linköping University, Sweden.
    Strandqvist, Wiktor
    RISE Research Institutes of Sweden, Sweden; Linköping University, Sweden.
    Cederblad, Gustav
    Linköping University, Sweden.
    Nyström, Mikael
    RISE Research Institutes of Sweden, Sweden; Linköping University, Sweden.
    Alirezaie, Marjan
    Örebro University, School of Science and Technology.
    Lind, Leili
    RISE Research Institutes of Sweden, Sweden; Linköping University, Sweden.
    Blomqvist, Eva
    RISE Research Institutes of Sweden, Sweden; Linköping University, Sweden.
    Lindén, Maria
    Mälardalen University, Sweden.
    Kristoffersson, Annica
    Örebro University, School of Science and Technology.
    Designing an Extensible Domain-Specific Web Corpus for “Layfication”: A Case Study in eCare at Home2019In: Cyber-Physical Systems for Social Applications / [ed] Maya Dimitrova (Bulgarian Academy of Sciences, Bulgaria) and Hiroaki Wagatsuma (Kyushu Institute of Technology, Japan), Hershey, PA, USA: IGI Global, 2019, p. 98-155Chapter in book (Refereed)
    Abstract [en]

    In the era of data-driven science, corpus-based language technology is an essential part of cyber physical systems. In this chapter, the authors describe the design and the development of an extensible domain-specific web corpus to be used in a distributed social application for the care of the elderly at home. The domain of interest is the medical field of chronic diseases. The corpus is conceived as a flexible and extensible textual resource, where additional documents and additional languages will be appended over time. The main purpose of the corpus is to be used for building and training language technology applications for the “layfication” of the specialized medical jargon. “Layfication” refers to the automatic identification of more intuitive linguistic expressions that can help laypeople (e.g., patients, family caregivers, and home care aides) understand medical terms, which often appear opaque. Exploratory experiments are presented and discussed.

  • Johnstone, Leanne
    Örebro University, Örebro University School of Business.
    Theorising and conceptualising the sustainability control system for effective sustainability management2019In: Journal of Management Control, ISSN 2191-4761, E-ISSN 2191-477XArticle in journal (Refereed)
    Abstract [en]

    This conceptual paper explores the iterative relationship between system design and use for the development process of sustainability control systems (SCS). Buildingupon Adler and Borys’ seminal framework (Adm Sci Q 41(4):61–89, 1996) as ananalytical tool, it suggests that SCS are characteristically distinct, and more researchinto the dual role of control (i.e. control over based on system design and controlin situ based on system use by the individual user) is necessary for future theorisations of the SCS. It poses that for sustainable futures that extend beyond organisational boundaries, more attention is required on individual general employees inmanagement accounting and control frameworks as instrumental for performanceoutcomes. To this end, individual values, borne from the extra-organisational context,are considered important alongside organisational ones for the developmentof SCS. Thus, the paper bridges perspectives on system characteristics, the individualand performance outcomes by offering a theoretical framework for futureresearch. It also extends studies on accounting as a social practice by emphasising the extra-organisational factors that influence internal accounting systems. Finally,it expounds upon the notion of social control as an individual-level phenomenon,necessary for sustainability. This expanded theoretical perspective also has implicationsfor practice by encouraging managers to think strategically about how systems are received from the perspective of the user. This can encourage more commitment to the sustainability cause from the outset, as well as over spatial and temporal boundaries.

  • Göras, Camilla
    Örebro University, School of Health Sciences.
    Open the door to complexity: Safety climate and work processes in the operating room2019Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    A complex adaptive system such as the operating room (OR), consists of different safety cultures, sub-cultures and ways of working. When measuring, a strong safety climate has been associated with lower rates of surgical complications. Teamwork is an important factor of safety climate. Discrepancies among professionals’ perceptions of teamwork climate exists. Hence it seems crucial to explore if diversity exists in the perception of factors related to safety climate and between managers and front-line staff in the OR. Complex work processes including multitasking and interruptions are other challenges with potential effect on patient safety. However, multitasking and interruptions may have positive impact on patient safety, but are not well understood in clinical work. Despite challenges a lot of things go well in the OR. Thus, the overall aim of this thesis was to evaluate an instrument for assessing safety climate, to describe and compare perceptions of safety climate, and to explore the complexity of work processes in the OR.

    To evaluate the Safety Attitudes Questionnaire-operating room (SAQ-OR) version and elicit estimations of the surgical team a cross-sectional study design was used. How work was done was studied by observations using the Work Observation Method by Activity Timing and by group interviews with OR professionals.

    The results show that the SAQ-OR is a relatively acceptable instrument to assess perceptions of safety climate within Swedish ORs. OR professionals´ perceptions of safety climate showed variations and some weak areas which cohered fairly well with managers' estimations. Work in the OR was found to be complex and consisting of multiple tasks where communication was most frequent. Multitasking and interruptions, mostly followed by communication, were common. This reflects interactions and adaptations common for a complex adaptive system. Managing complexity and creating safe care in the OR was described as a process of planning and preparing for the expected and preparedness to be able to adapt to the unexpected.

    List of papers
    1. Swedish translation and psychometric testing of the safety attitudes questionnaire (operating room version)
    Open this publication in new window or tab >>Swedish translation and psychometric testing of the safety attitudes questionnaire (operating room version)
    2013 (English)In: BMC Health Services Research, ISSN 1472-6963, E-ISSN 1472-6963, Vol. 13, article id 104Article in journal (Refereed) Published
    Abstract [en]

    Background: Tens of millions of patients worldwide suffer from avoidable disabling injuries and death every year. Measuring the safety climate in health care is an important step in improving patient safety. The most commonly used instrument to measure safety climate is the Safety Attitudes Questionnaire (SAQ). The aim of the present study was to establish the validity and reliability of the translated version of the SAQ.

    Methods: The SAQ was translated and adapted to the Swedish context. The survey was then carried out with 374 respondents in the operating room (OR) setting. Data was received from three hospitals, a total of 237 responses. Cronbach's alpha and confirmatory factor analysis (CFA) was used to evaluate the reliability and validity of the instrument.

    Results: The Cronbach's alpha values for each of the factors of the SAQ ranged between 0.59 and 0.83. The CFA and its goodness-of-fit indices (SRMR 0.055, RMSEA 0.043, CFI 0.98) showed good model fit. Intercorrelations between the factors safety climate, teamwork climate, job satisfaction, perceptions of management, and working conditions showed moderate to high correlation with each other. The factor stress recognition had no significant correlation with teamwork climate, perception of management, or job satisfaction.

    Conclusions: Therefore, the Swedish translation and psychometric testing of the SAQ (OR version) has good construct validity. However, the reliability analysis suggested that some of the items need further refinement to establish sound internal consistency. As suggested by previous research, the SAQ is potentially a useful tool for evaluating safety climate. However, further psychometric testing is required with larger samples to establish the psychometric properties of the instrument for use in Sweden.

    Place, publisher, year, edition, pages
    BioMed Central, 2013
    Keywords
    Patient safety, Operating room, Safety climate, Psychometrics, Translation, Safety attitudes questionnaire
    National Category
    Nursing
    Research subject
    Caring sciences
    Identifiers
    urn:nbn:se:oru:diva-28904 (URN)10.1186/1472-6963-13-104 (DOI)000317113300001 ()23506044 (PubMedID)2-s2.0-84875072612 (Scopus ID)
    Available from: 2013-05-06 Created: 2013-05-03 Last updated: 2019-05-15Bibliographically approved
    2. The Swedish Safety Attitudes Questionnaire - Operating Room Version: Psychometric Properties in the Surgical Team
    Open this publication in new window or tab >>The Swedish Safety Attitudes Questionnaire - Operating Room Version: Psychometric Properties in the Surgical Team
    Show others...
    2018 (English)In: Journal of Perianesthesia Nursing, ISSN 1089-9472, E-ISSN 1532-8473, Vol. 33, no 6, p. 935-945Article in journal (Refereed) Published
    Abstract [en]

    Purpose: To validate the Swedish Safety Attitudes Questionnaire–operating room (SAQ-OR) version by re-evaluating its psychometric properties for the surgical team.

    Design: Cross-sectional questionnaire study.

    Methods: 541 surgical team members including perioperative nurses, physicians, and licensed practical nurses at three Swedish hospitals were included.

    Findings: For the total sample, the Cronbach’s a for the six factors ranged from 0.51 to 0.76. Goodness-of-fit analyses indicated that the six-factor model was acceptable and the factor loadings were statistically significant. The test of the hypothesized relationships among the factors showed a correlation from 0.936 to 0.042.

    Conclusions: The refined Swedish version of the SAQ-OR is a reasonably reliable and acceptably valid instrument for the measurement of patient safety climate in the surgical team. However, the results related to the different analyses varied among the different professionals and further research, using larger samples, is needed to explore these differences, especially among the physicians.

    Place, publisher, year, edition, pages
    Maryland Heights, MO, United States: Elsevier, 2018
    Keywords
    Safety Attitudes Questionnaire, safety climate, operating room, patient safety, psychometrics, surgical team
    National Category
    Nursing
    Research subject
    Caring Sciences w. Medical Focus
    Identifiers
    urn:nbn:se:oru:diva-64024 (URN)10.1016/j.jopan.2017.09.009 (DOI)000450368000017 ()30449442 (PubMedID)2-s2.0-85040001880 (Scopus ID)
    Available from: 2018-01-10 Created: 2018-01-10 Last updated: 2019-04-30Bibliographically approved
    3. Interprofessional team assessments of the patient safety climate in Swedish operating rooms: a cross-sectional survey
    Open this publication in new window or tab >>Interprofessional team assessments of the patient safety climate in Swedish operating rooms: a cross-sectional survey
    2017 (English)In: BMJ Open, ISSN 2044-6055, E-ISSN 2044-6055, Vol. 7, no 9, article id e015607Article, review/survey (Refereed) Published
    Abstract [en]

    Background: A positive patient safety climate within teams has been associated with higher safety performance. The aim of this study was to describe and compare attitudes to patient safety among the various professionals in surgical teams in Swedish operating room (OR) departments. A further aim was to study nurse managers in the OR and medical directors’ estimations of their staffs’ attitudes to patient safety.

    Methods: A cross-sectional survey with the Safety Attitudes Questionnaire (SAQ) was used to elicit estimations from surgical teams. To evoke estimations from nurse managers and medical directors about staff attitudes to patient safety, a short questionnaire, based on SAQ, was used. Three OR departments at three different hospitals in Sweden participated. All licensed practical nurses (n=124), perioperative nurses (n=233), physicians (n=184) and their respective manager (n=22) were invited to participate.

    Results: Mean percentage positive scores for the six SAQ factors and the three professional groups varied, and most factors (safety climate, teamwork climate, stress recognition, working conditions and perceptions of management), except job satisfaction, were below 60%. Significantly lower mean values were found for perioperative nurses compared with physicians for perceptions of management (56.4 vs 61.4, p=0.013) and working conditions (63.7 vs 69.8, p=0.007). Nurse managers and medical directors’ estimations of their staffs’ ratings of the safety climate cohered fairly well.

    Conclusions: This study shows variations and some weak areas for patient safety climate in the studied ORs as reported by front-line staff and acknowledged by nurse managers and medical directors. This finding is a concern because a weak patient safety climate has been associated with poor patient outcomes. To raise awareness, managers need to support patient safety work in the OR.

    Place, publisher, year, edition, pages
    BMJ Publishing Group Ltd, 2017
    National Category
    Nursing
    Research subject
    Caring sciences
    Identifiers
    urn:nbn:se:oru:diva-59446 (URN)10.1136/bmjopen-2016-015607 (DOI)000412650700060 ()28864690 (PubMedID)2-s2.0-85029118920 (Scopus ID)
    Note

    Funding Agency:

    Centre for Clinical Research Dalarna

    Available from: 2017-09-03 Created: 2017-09-03 Last updated: 2019-04-30Bibliographically approved
    4. Tasks, multitasking and interruptions among the surgical team in an operating room: a prospective observational study
    Open this publication in new window or tab >>Tasks, multitasking and interruptions among the surgical team in an operating room: a prospective observational study
    Show others...
    (English)Manuscript (preprint) (Other academic)
    National Category
    Other Health Sciences
    Identifiers
    urn:nbn:se:oru:diva-73974 (URN)
    Available from: 2019-04-30 Created: 2019-04-30 Last updated: 2019-04-30Bibliographically approved
    5. Managing complexity in the operating room: a group interview study
    Open this publication in new window or tab >>Managing complexity in the operating room: a group interview study
    Show others...
    (English)Manuscript (preprint) (Other academic)
    National Category
    Other Health Sciences
    Identifiers
    urn:nbn:se:oru:diva-73975 (URN)
    Available from: 2019-04-30 Created: 2019-04-30 Last updated: 2019-04-30Bibliographically approved
  • Seiler Brylla, Charlotta
    et al.
    Stockholms universitet, Stockholm, Sverige.
    Westberg, Gustav
    Södertörns högskola, Stockholm, Sverige.
    Wojahn, Daniel
    Södertörns högskola, Stockholm, Sverige.
    C som i kritik: Kritiska perspektiv inom text- och diskursstudier2018In: Kritiska text- och diskursstudier / [ed] Daniel Wojahn, Charlotta Seiler Brylla, Gustav Westberg, Huddinge: Södertörns högskola , 2018, p. 9-36Chapter in book (Refereed)
    Abstract [en]

    This article deals with the concept of critique by discussing and tracing theoretical definitions and epistemological implications of critique within three influential fields of discourse studies: Critical Linguistics, Critical Discourse Studies and Discourse Linguistics (Diskurslingvistik). The intention of the article stems from an observation regarding how discourse studies – at least in a Swedish context – tend to align with a critical perspective, yet without explicating it. Consequently, the article examines the following questions: What does it mean to conduct critical studies as a linguist? What traditions and theoretical contexts are the understandings of critique anchored in? What critical traditions have inspired discourse studies in Sweden? Drawing on the conceptual conflict between postmodern notions of knowledge on the one hand and populist and post-truth views on the other, the article concludes by arguing for the contemporary importance of linguistic critique. 

  • Wojahn, Daniel
    et al.
    Södertörns högskola, Stockholm, Sverige.
    Seiler Brylla, Charlotta
    Stockholms universitet, Stockholm, Sverige.
    Westberg, Gustav
    Södertörns högskola, Stockholm, sverige.
    Förord2018In: Kritiska text- och diskursstudier / [ed] Daniel Wojahn, Charlotta Seiler Brylla, Gustav Westberg, Huddinge: Södertörns högskola , 2018, p. 5-7Chapter in book (Other academic)
  • Wojahn, Daniel
    et al.
    Södertörns högskola, Stockholm, Sverige.
    Seiler Brylla, CharlottaWestberg, GustavSödertörns högskola, Stockholm, Sverige.
    Kritiska text- och diskursstudier2018Collection (editor) (Refereed)
    Abstract [sv]

    Hur kan kritik förstås i ett språkvetenskapligt sammanhang? Vad innebär det att inta en kritisk forskarposition som språkvetare? Vad kan man som text- och diskursanalytiker rikta sin kritik mot?

    Denna antologi tar ett samlat och bredare grepp om konceptet kritik inom språkvetenskaplig text- och diskursanalys med ett särskilt fokus på en svenskspråkig kontext. Boken innehåller såväl teoretiska diskussioner av kritikbegreppet som kritiska empiriska analyser. De teoretiska diskussionerna tar sig an kritikbegreppets innebörd, dess historia och vetenskapliga implikationer. Här bidrar bokens artiklar också med teoretiska utvecklingar av kritikbegreppet i relation till exempelvis genre, motdiskurser, tystnad och frånvaro. I de empiriska bidragen analyseras sociala och samhällsrelevanta fenomen såsom feminism, nyliberalism, rasism och propaganda utifrån kritiska perspektiv. De empiriska analyserna bygger på vitt skilda skriftspråkliga såväl som multimodala material. Bland annat presenteras kritiska analyser av nationella prov för gymnasiet, reklam för banker, IKEA-kataloger, vårdprogram för ätstörningar och synen på samiska barns språkundervisning. Boken ger en samlad bild av aktuell kritisk text- och diskursanalytisk forskning och avser även att bidra till den teoretiska utvecklingen av fältet.

  • Volgsten, Ulrik
    Örebro University, School of Music, Theatre and Art.
    Recension av: Mats Arvidsons An imaginary musical road movie: transmedial semiotic structures in Brad Mehldau’s concept album Highway rider2018In: Svensk tidskrift för musikforskning, ISSN 0081-9816, Vol. 100, no 1Article, book review (Other academic)
  • Moberg, Nadia
    Örebro University, School of Music, Theatre and Art.
    Academic musicians: How music performance students in Sweden re-/negotiate notions of knowledge and competence2019In: Nordisk musikkpedagogisk forskning: Årbok, ISSN 1504-5021, Vol. 19, p. 53-74Article in journal (Refereed)
    Abstract [en]

    As a result of reforms across higher education in Sweden, music performance programs have been subject to processes of academization. As professional education programs are located within academic structures, the question of balance between practical and ‘scientific’ knowledge is crucial. Expected learning outcomes at a national level now include statements concerning students’ insight into current research, critical reflection, an ability to formulate new questions and to contribute to the development of subject-specific knowledge. Students find themselves caught in the midst of these changes, where tensions rise between craftsmanship, artistic performance skills and scholarly knowledge. The aim of this study is to investigate how music performance students re-/negotiate notions of knowledge and competence in the light of processes of academization. By using methods associated with critical discourse studies, the specific objective here is to analyse and explain how tensions are discursively manifested as students re-/negotiate notions of knowledge and competence. The result is based on interviews with six master students with a classical music study-orientation at three higher music education institutions in Sweden. Results show that tensions arise primarily from ideas of musical autonomy versus adaption, between what the education provides versus what the labour market demands and between musical craftsmanship versus scholarly tasks. It is argued that ideals within higher education, in general, versus values and traditions associated with a master-apprentice tradition is one source of such tensions, which risk creating a perception of a fragmented education.

  • Källström, Åsa
    et al.
    Örebro University, School of Law, Psychology and Social Work.
    Moberg Stephenson, Maria
    Örebro University, School of Law, Psychology and Social Work.
    Hur SOS Barnbyars mentorprogram motsvarar unga migranters behov och förväntningar2019Report (Other academic)
  • Berggren, Niclas
    et al.
    The Ratio Institute, Stockholm, Sweden.
    Jordahl, Henrik
    Research Institute of Industrial Economics (IFN), Stockholm, Sweden.
    Stern, Charlotta
    Department of Sociology, Stockholm University, Stockholm Sweden.
    The Political Opinions of Swedish Social Scientists2009In: Finnish economic papers, ISSN 0784-5197, Vol. 22, no 2, p. 75-88Article in journal (Refereed)
    Abstract [en]

    We study the political opinions of Swedish social scientists in seven disciplines and find indications of a left‑right divide, with sociology and gender studies being the most disciplines, with business administration, economics, and law being the most right‑leaning ones, and with political science and economic history being located somewhere in between. This pattern is found when looking at party preferences, left‑right self‑identification, and positions on economic policy issues. Overall, there is a slight dominance in sympathies for the right, although there are more academics to the left among those most involved in activities with a potential to influence decision‑makers.

  • Jordahl, Henrik
    Research Institute of Industrial Economics (IFN), Stockholm, Sweden.
    Erratum to: An economic analysis of voting in Sweden2012In: Public Choice, ISSN 0048-5829, E-ISSN 1573-7101, Vol. 150, no 1-2, p. 385-385Article in journal (Refereed)
  • Jordahl, Henrik
    Research Institute of Industrial Economics (IFN), Stockholm, Sweden.
    Vinster i välfärden: Funktion och opinion2015In: Vinster, välfärd och entreprenörskap / [ed] Johan Eklund, Entreprenörskapsforum , 2015, p. 53-69Chapter in book (Other academic)
    Abstract [sv]

    Henrik Jordahl inleder sitt kapitel med en diskussion om de privata välfärdsföretagens omfattning. Av kommunernas kostnader för välfärdstjänster går 16 procentenheter till köp av privata utförare varav 13 procentenheter till köp av tjänster som utförs av privata företag och tre procentenheter till köp av tjänster som föreningar och stiftelser tillhandahåller. Landstingen och regionerna lägger 13 procent av sina kostnader för hälso- och sjukvård på köp av tjänster från privata utförare, nästan uteslutande vinstdrivande sådana. Jordahl drar slutsatsen att möjligheten att dela ut vinst ger ägarna starka incitament att driva verksamheten så effektivt som möjligt. Effektiv verksamhetsdrift kan även komma den offentliga köparen till del genom lägre priser. Vinsternas baksida är att kostnadsjakten riskerar att drivas för långt om verksamhetens mål är svåra att precisera i kontrakt och följa upp eller om brukarna inte har tillräcklig kvalitetsinformation när de väljer utförare. Varken internationell forskning eller svenska rapporter tyder dock på några stora skillnader mellan vinstdrivande och icke-vinstdrivande produktion av välfärdstjänster. Förslaget att begränsa välfärdsföretagens möjligheter till vinstuttag har ett starkt stöd bland svenska väljare. Genom en experimentellt utformad opinionsundersökning analyserar Jordahl hur detta stöd förhåller sig till uppfattningar om välfärdsföretagens rörelsemarginal. En central slutsats som Jordahl drar är att de flesta svenskar överskattar välfärdsföretagens rörelsemarginal (som uppgår till fem procent av deras omsättning). Svenskarna uppskattar rörelsemarginalen till 26 procent och en fjärdedel uppskattar marginalen till hela 40 procent, vilket med andra ord är en grov överskattning. Till följd av detta överskattar de flesta även välfärdsföretagens möjligheter att dela ut vinst till sina ägare. Ju mer någon överskattar välfärdsföretagens rörelsemarginal, desto mer positiv tenderar denne att vara till förslaget att begränsa möjligheten till vinstuttag. Dessutom blir människor mindre positivt inställda till att begränsa möjligheterna till vinstuttag när de får information om välfärdsföretagens faktiska genomsnittliga rörelsemarginal. Även om en majoritet alltjämt är positiva till att begränsa välfärdsföretagens möjligheter att dela ut vinst till sina ägare tyder undersökningen på att opinionen kring privata välfärdsutförare och deras vinstuttag är känslig för missuppfattningar. Till att börja med är det policyrelevant att de privata vinstdrivande utförarna ännu inte har uppnått några dominerande marknadsandelar i den svenska välfärdssektorn samtidigt som de överlag varken tillhandahåller sämre eller dyrare tjänster än de offentliga utförarna. Jordahl menar även att de flesta människor överskattar välfärdsföretagens genomsnittliga rörelsemarginal och att korrekt information om denna marginal påverkar deras inställning till en vinstutdelningsbegränsning. Detta leder tanken till behovet av information och ökad kunskap hos väljarna. Så skulle även kunna vara fallet för information om de vinstdrivande utförarnas marknadsandelar, kostnader och kvalitet. I vart fall framstår det som att politiker bör vara försiktiga med att använda enkla opinionsundersökningar som grund för sitt beslutsfattande.

  • Jordahl, Henrik
    Research Institute of Industrial Economics (IFN), Stockholm, Sweden.
    Välfärdstjänster i privat regi: framväxt och drivkrafter2013Collection (editor) (Refereed)
  • Heller Sahlgren, Gabriel
    et al.
    London School of Economics, London, UK.
    Jordahl, Henrik
    Research Institute of Industrial Economics (IFN), Stockholm, Sweden.
    Information: ett verktyg för bättre skolsystem2016Book (Refereed)
  • Jordahl, Henrik
    Research Institute of Industrial Economics (IFN), Stockholm, Sweden.
    Vinst i välfärden: Nationalekonomiska erfarenheter och perspektiv2011In: Vitsen med vinsten: fyra exempel på företag inom vård och skola som genom hög kvalitet ger uthållig vinst / [ed] Anders Morin, Stockholm: Hjalmarson & Högberg Bokförlag , 2011, p. 78-93Chapter in book (Other academic)
  • Jordahl, Henrik
    et al.
    Research Institute of Industrial Economics (IFN), Stockholm, Sweden.
    Öhrvall, Richard
    CKC, Linköping University, Linköping, Sweden.
    Nationella reformer och lokala initiativ2013In: Välfärdstjänster i privat regi: Framväxter och drivkrafter / [ed] Henrik Jordahl, Matz Dahlberg, Mikael Elinder, David Isaksson, Anders Lindbom, Heléne Lundqvist, Ulrika Winblad Spångberg och Richard Öhrvall, Stockholm: SNS förlag, 2013, 1, p. 33-87Chapter in book (Refereed)
    Abstract [sv]

    Många svenska välfärdstjänster började privatiseras under sent 1980-tal och tidigt 1990-tal i kölvattnet av en global privatiseringsvåg. Denna våg inleddes när Margaret Thatcher tillträdde som Storbritanniens premiärminister den 4 maj 1979. Då producerades ungefär 10 procent av örikets BNP i de statligt ägda företagen. Det privatiseringsprogram som Thatcher genomförde reducerade den andelen till 3 procent vid hennes avgång elva år senare. Många andra OECD-länder, bland annat Frankrike, Japan och Spanien, följde Storbritanniens exempel under 1980-talet. När kommunismen sedan föll vid 1980-talets slut inleddes omfattande privatiseringar i Östeuropa. Detta händelseförlopp gav politiskt bränsle till fortsatta privatiseringar i Västeuropa och andra delar av världen. I Sverige börsnoterades och privatiserades flera statliga företag, exempelvis SSAB och Procordia. De statliga monopolföretagen inom tv och telefoni utmanades framgångsrikt av Kinnevik med Jan Stenbeck vid rodret. Även på andra områden skedde förändringar i marknadsliberal riktning, bland annat avreglerades inrikesflyget och taxinäringen och ansvaret för järnvägsnätet flyttades från SJ till det nyinrättade Banverket för att skapa förutsättningar för konkurrens (Bergh 2009). Samtidigt infördes styrningsmodeller inom den offentliga sektorn som var starkt influerade av näringslivet. Att den offentligt finansierade vården, skolan och omsorgen skulle öppnas upp för privata utförare bör alltså ses som en del i en större utveckling.

    I det här kapitlet beskriver vi hur produktionen av välfärdstjänster har  privatiserats i Sverige sedan 1980-talet. Med detta tidsperspektiv fångar vi en händelserik period under vilken privata utförare har blivit allt vanligare.

    Kapitlet inleds med några förklaringar till att den offentliga sektorn kom att utsättas för konkurrens från privata utförare. Därefter följer en lägesbeskrivning med tjänsteövergripande statistik följt av redogörelser för den privata produktionens utveckling inom fem viktiga välfärdsområden: förskola, skola, äldreomsorg, insatser till personer med funktionsnedsättning och sjukvård.2 För varje område beskriver vi också vilka aktörer som har drivit på eller bromsat utvecklingen, vilka politiska argument som har använts (främst i propositioner och följdmotioner), hur marknaden har organiserats och hur de regionala skillnaderna ser ut.

  • Elinder, Mikael
    et al.
    Uppsala University, Uppsala, Sweden.
    Jordahl, Henrik
    Research Institute of Industrial Economics (IFN), Stockholm, Sweden.
    Kontrakt, kostnader och kvalitet2013In: Välfärdstjänster i privat regi: Framväxt och drivkrafter / [ed] Henrik Jordahl, Stockholm: SNS förlag, 2013, p. 89-120Chapter in book (Refereed)
  • Bergh, Andreas
    et al.
    Research Institute of Industrial Economics (IFN), Stockholm, Sweden; Lund University, Lund, Sweden.
    Jordahl, Henrik
    Research Institute of Industrial Economics (IFN), Stockholm, Sweden.
    Öhrvall, Richard
    Linköping University, Linköping, Sweden.
    Tål den svenska modellen att jämföras?: om utlandssvenskars attityder till välfärdsstaten2016In: Svenska utlandsröster: SOM-undersökningen till utlandssvenskar 2014 / [ed] Maria Solevid, Göteborg: Göteborgs universitet, 2016, p. 211-232Chapter in book (Other academic)
    Abstract [sv]

    Frågan om välfärdsmissnöje driver utvandring från Sverige är en av frågorna i Andreas Berghs, Henrik Jordahls och Richard Öhrvalls kapitel Tål den svenska modellen att jämföras? Utlandssvenskars attityder till välfärdsstaten. Mer specifikt undersöks utlandssvenskarnas åsikter om välfärdssystem, skatter, skola och sjukvård i det land de flyttat till och hur synen på den svenska välfärdsstaten skiljer sig åt beroende på till vilken typ av välfärdsystem man flyttat. Resultaten visar att utlandssvenskar generellt sett är mer nöjda med sjukvården och skolan i det nya landet än i Sverige. Sammanfattningsvis tycks utlandssvenskar samtidigt föredra det svenska välfärdssystemet, men (den oftast lägre) skattenivån i andra typer av välfärdsstater vilket inte är en förenlig ståndpunkt. Författarna finner inte stöd för att välfärdsmissnöje driver utvandring, men det förekommer negativa bedömningar av den svenska sjukvården och svenska skatter bland utlandssvenskar i välfärdssystem som skiljer sig från det svenska. Resultaten tyder på att flera åsikter om Sverige omvärderas i ljuset av nya erfarenheter. Ju rikare land man flyttat till, desto mindre nöjd är man med den svenska sjukvården och med välfärdssystemet som helhet. Den som flyttat till ett land med bra skola enligt Pisa-mätningarna har också en mer negativ bild av den svenska skolan. Utlandssvenskar som flyttat till en annan typ av välfärdsstat är mer nöjda med det nya landets skattenivå, men mindre nöjda med välfärdssystemet som helhet. Viktigt att poängtera är att den negativa uppfattningen om den svenska skattenivån uppvisar stora skillnader mellan män och kvinnor; män är negativa till skattenivån i Sverige, vilket kvinnor inte är, medan kvinnor är mer negativa till skattenivån i boendelandet.

  • Angelis, Jannis
    et al.
    Industriell Management, KTH, Sweden; Research Institute of Industrial Economics (IFN), Stockholm, Sweden.
    Jordahl, Henrik
    Research Institute of Industrial Economics (IFN), Stockholm, Sweden.
    Att styra och leda äldreomsorg: Hur går det till och vad kan förbättras?2014Book (Refereed)
  • Jansson, Anton
    et al.
    Örebro University, School of Science and Technology.
    Pejryd, Lars
    Örebro University, School of Science and Technology.
    In-situ computed tomography investigation of the compression behaviour of strut, and periodic surface lattices2019In: iCT 2019 / [ed] Rolf Diederichs, NDT.net , 2019, p. 221-227Conference paper (Refereed)
    Abstract [en]

    In this work the effects of fabrication errors in the Body Centered Cubic strut lattice, and the periodic surface lattice Schwarz Diamond has been investigated. The lattices were both fabricated as-is and with induced errors to evaluate the lattices response to fabrication errors. The behaviour of the lattices were studied using compression test and in-situ computed tomography investigation. The results show that the Schwarz Diamond lattices in general are stronger than the Body Centered Cubic lattices in all of the measured aspects. Often up to five times stronger. It was also found that the elastic behaviour of the Schwarz Diamond lattices were mainly unaffected by fabrication errors while the Body Centered Cubic lattices experienced severe losses in performance. The behaviour of the lattices under compression could be followed using computed tomography which aided in the understanding of their behaviour.

  • Ericson, Helena
    Örebro University, School of Health Sciences.
    A Salutogenic perspective on resistance training: a study on healthy old adult women2018Licentiate thesis, comprehensive summary (Other academic)
    Abstract [en]

    The number of people aged 60 years and over has doubled since 1980and the World Health Organization predicts that the population of over60s will reach 2 billion by the year 2050. An ageing population poses bothchallenges and opportunities for society and for individuals. Whilst theseare positive statements, increases in life spans do not directly lead to increasesin health spans. The naturally occurring ageing process can leadto reductions in functionality and, in order to address this, scholars haveargued the benefits of regularly engaging in physical activity, and especiallyresistance training. Therefore, an important challenge for modernsociety is to develop strategies that delay the onset of disease, such as interventionsthat include physical activity. This licentiate thesis investigatesolder women’s physical activity in a resistance training context and howthis affects different aspects of their health.The overall aim of the thesis is to explore healthy and physically activeolder women’s experiences of what maintains and enhances their healthafter starting resistance training.This thesis used a quantitative and a qualitative approach to investigatea group of old adult women. Data collection was structured in questionnaires(n=32) with one intervention group and one control group for thepaper I, and focus group interviews (n=14) in paper II. Paper I studied theeffects of resistance training on physically active and healthy olderwomen. Paper II relates to the women who continued to exercise after theresistance training intervention ended in order to explore their health resources.The theoretical framework used in this thesis is a movement towardshealth as explained by salutogenic theory.This thesis showed that resistance training has positive effects on psychologicalwell-being and is important because it not only benefits thosewho are physically inactive, but also those who are already physically activeand healthy.From a salutogenic perspective, physical activity provides a meaningful,comprehensible and manageable way for older women to engage in theongoing process of maintaining health.

    List of papers
    1. Resistance training is linked to heightened positive motivational state and lower negative affect among healthy women aged 65–70
    Open this publication in new window or tab >>Resistance training is linked to heightened positive motivational state and lower negative affect among healthy women aged 65–70
    2018 (English)In: Journal of Women & Aging, ISSN 0895-2841, E-ISSN 1540-7322, Vol. 30, no 5, p. 366-381Article in journal (Refereed) Published
    Abstract [en]

    Resistance training (RT) improves overall health, but the psychological effects of RT in healthy old adults have not been tested. The aim of this study was to investigate a sample of 65–70-year-old healthy and physically active women to assess their sense of coherence, health-related quality of life, hope, and affect, before and after taking part in a 24-week RT intervention (N = 14), compared to controls (N = 18). Findings showed a significant increase in hope (p = 0.013) and a significant decrease in negative affect (p = 0.002). Starting RT after age 65 does not appear to negatively impact on women’s psychological health but seems to be associated with important psychological health benefits.

    Place, publisher, year, edition, pages
    Taylor & Francis, 2018
    Keywords
    Healthy aging, hope, negative affect, psychological outcomes, resistance training
    National Category
    Public Health, Global Health, Social Medicine and Epidemiology Geriatrics
    Research subject
    Sports Science
    Identifiers
    urn:nbn:se:oru:diva-57052 (URN)10.1080/08952841.2017.1301720 (DOI)000443902100002 ()28375777 (PubMedID)2-s2.0-85017094736 (Scopus ID)
    Available from: 2017-04-12 Created: 2017-04-12 Last updated: 2019-02-15Bibliographically approved
    2. Health resources, ageing and physical activity: a study of physically active women aged 69–75 years
    Open this publication in new window or tab >>Health resources, ageing and physical activity: a study of physically active women aged 69–75 years
    2018 (English)In: Qualitative Research in Sport, Exercise and Health, ISSN 2159-676X, E-ISSN 2159-6778, Vol. 10, no 2, p. 206-222Article in journal (Refereed) Published
    Abstract [en]

    Most studies on issues relating to ageing, physical activity and health are based on an understanding of what causes illness, rather than what promotes health. The health benefits of physical activity relate to questions about how to avoid physical inactivity and overcoming barriers to participating in physical activity, rather than why older people continue to be physically active. The aim of this study was to explore health resources in relation to physical activity, especially resistance training, that physically active women between the ages of 69–75 years characterise as important for the maintenance of health. In order to investigate these health resources, the study drew on salutogenic theory and the concept of sense of coherence. The analysed data came from interviews with 14 physically active Swedish women aged 69–75 years who had previously taken part in a resistance training intervention, but who also had continued to engage in physical activity and resistance training when the intervention ended. We identified seven health resources, social relations and care, positive energy, self-worth, capability in and about physical activity, the habit of exercising, identity as an exercising person and womanhood related to physical activity, in this case resistance training, that physically active women aged between 69 and 75 years characterised as important for maintaining their health. In conclusion, physical activity carried out in a stable group of peers provided a meaningful, comprehensible and manageable way for these older women to engage in the on-going process of maintaining health.

    Place, publisher, year, edition, pages
    Routledge, 2018
    Keywords
    Health resources, exercise, resistance training, salutogenesis, older adults
    National Category
    Sport and Fitness Sciences
    Research subject
    Sports Science
    Identifiers
    urn:nbn:se:oru:diva-61946 (URN)10.1080/2159676X.2017.1393453 (DOI)000431127700005 ()2-s2.0-85031919728 (Scopus ID)
    Available from: 2017-10-24 Created: 2017-10-24 Last updated: 2019-02-15Bibliographically approved
  • Chatzipetrou, Panagiota
    et al.
    Software Engineering Research Lab Sweden, Blekinge Institute of Technology, Karlskrona, Sweden.
    Ouriques, Raquel
    Software Engineering Research Lab Sweden, Blekinge Institute of Technology, Karlskrona, Sweden.
    Gonzalez-Huerta, Javier
    Software Engineering Research Lab Sweden, Blekinge Institute of Technology, Karlskrona, Sweden.
    Approaching the Relative Estimation Concept with Planning Poker2018In: CSERC '18 The 7th Computer Science Education Research Conference, Saint Petersburg, Russian Federation, October 10 - 12, 2018: The 7th Computer Science Education Research Conference, Saint Petersburg, Russian Federation, October 10 - 12, 2018, ACM Digital Library, 2018, p. 21-25Conference paper (Refereed)
    Abstract [en]

    Simulation is a powerful instrument in the education process that can help students experience a reality context and understand complex concepts required to accomplish practitioners’ tasks. The present study aims to investigate the software engineering students’ perception about the usefulness of the Planning Poker technique in relation to their understanding of the relative estimation concept. We conducted a simulation exercise where students first estimated tasks applying the concepts of relative estimation based on the concepts explained in the lecture, and then to estimate tasks applying the Agile Planning Poker technique. To investigate the students’ perception, we used a survey at the end of each exercise. The preliminary results did not show statistical significance on the students’ confidence to estimate relatively the user stories. However, from the students’ comments and feedback, there are indications that students are more confident in using Agile Planning Poker when they are asked to estimate user stories. The study will be replicated in the near future to a different group of students with a different background, to have a better understanding and also identify possible flaws of the exercise.

  • Klotins, Eriks
    et al.
    DIPT, Blekinge Institute of Technology, Karlskrona, Sweden.
    Unterkalmsteiner, Michael
    School of Computing, Blekinge Institute of Technology, Karlskrona, Sweden.
    Chatzipetrou, Panagiota
    Örebro University, Örebro University School of Business. Software Engineering Research Lab, Blekinge Institute of Technology, Karlskrona, Sweden; .
    Gorschek, Tony
    Software Engineering, Blekinge Institute of Technology, Karlskrona, Sweden.
    Prikladnicki, Rafael
    Software Engineering, Pontifical Catholic University of Rio Grande do Sul, Brazil.
    Tripathi, Nirnaya
    University of Oulu, Finland.
    Pompermaier, Leandro Bento
    Software Engineering, Pontifical Catholic University of Rio Grande do Sul, Brazil.
    A progression model of software engineering goals, challenges, and practices in start-ups2019In: IEEE Transactions on Software Engineering, ISSN 0098-5589, E-ISSN 1939-3520Article in journal (Refereed)
    Abstract [en]

    Context: Software start-ups are emerging as suppliers of innovation and software-intensive products. However, traditional software engineering practices are not evaluated in the context, nor adopted to goals and challenges of start-ups. As a result, there is insufficient support for software engineering in the start-up context.

    Objective: We aim to collect data related to engineering goals, challenges, and practices in start-up companies to ascertain trends and patterns characterizing engineering work in start-ups. Such data allows researchers to understand better how goals and challenges are related to practices. This understanding can then inform future studies aimed at designing solutions addressing those goals and challenges. Besides, these trends and patterns can be useful for practitioners to make more informed decisions in their engineering practice.

    Method: We use a case survey method to gather first-hand, in-depth experiences from a large sample of software start-ups. We use open coding and cross-case analysis to describe and identify patterns, and corroborate the findings with statistical analysis.

    Results: We analyze 84 start-up cases and identify 16 goals, 9 challenges, and 16 engineering practices that are common among startups. We have mapped these goals, challenges, and practices to start-up life-cycle stages (inception, stabilization, growth, and maturity). Thus, creating the progression model guiding software engineering efforts in start-ups.

    Conclusions: We conclude that start-ups to a large extent face the same challenges and use the same practices as established companies. However, the primary software engineering challenge in start-ups is to evolve multiple process areas at once, with a little margin for serious errors.

  • Lindahl, Robert
    Örebro University, School of Law, Psychology and Social Work.
    Socialsekreteraren och det familjehemsplacerade barnet: Om relationen, erkännandet och de institutionella förutsättningarna2019Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    The aim of this thesis is to study, analyze and understand the relationship between children and youth in foster care and their responsible child welfare workers. The empirical material consists of qualitative interviews with foster children (n=53, three interviews/child, in total 159) and child welfare workers (n=17) conducted in a national evaluation of a pilot project with supervision representatives, and two focus groups conducted for the thesis. Examples of central theoretical concepts in the thesis are institution, role, professionalism and recognition. The interviewed children highlighted that the relationship with child welfare workers is negatively affected by a lack of time, availability, and trust. The children desire close and trustful relationships with child welfare workers, but generally they expect a relationship characterized by distance and formality. The child welfare workers emphasized that the relationships are affected by organizational constraints, such as time pressure and lack of continuity. Further, the work is characterized by role conflicts and contradictory expectations of professionalism. On the one hand, the child welfare workers stress the importance of closeness and trust in the relationships. On the other hand, they are expected to maintain formality, distance and functional specificity. The current relationship is affected by institutional prerequisites that are made visible by prevailing regulative, normative, and cultural-cognitive expectations. These different expectations shape and constrain the child welfare workers’ discretion, at the same time as they also create internal conflicts. By applying the theory of recognition, it becomes evident that the foster child is expected to be recognized through closeness, rights, and solidarity by the child welfare worker. Under current institutional conditions, tensions arise between these different forms. The discussions focuses on which form of recognition should constitute the starting-point for the relationship, and how closeness versus distance is affected by recognition through rights.

    List of papers
    1. Foster children's experiences and expectations concerning the child-welfare officer role: Prerequisites and obstacles for close and trustful relationships
    Open this publication in new window or tab >>Foster children's experiences and expectations concerning the child-welfare officer role: Prerequisites and obstacles for close and trustful relationships
    2017 (English)In: Child & Family Social Work, ISSN 1356-7500, E-ISSN 1365-2206, Vol. 22, no 4, p. 1415-1422Article in journal (Refereed) Published
    Abstract [en]

    The question of whether the Swedish social services are fulfilling their obligation to monitor and support children in foster care is attracting increasing attention. The importance of closeness and trust between children and their child-welfare officers has been highlighted in particular. The aim of this article is to study foster children's experiences and expectations concerning the role of the child-welfare officer, and how these constitute prerequisites for, and possible obstacles to the officers developing close and trustful relationships with the children under prevailing institutional conditions. Data from our evaluation of a national pilot project with supervision representatives provide the empirical basis. Our theoretical point of departure is that the relationship between the child and the child-welfare officer is affected by the officer's rolea role that is negotiated under the prevailing institutional conditions and in interaction with the children's experiences of and expectations about that role. The results show that most children emphasize that the relationship with their officer is negatively affected by a lack of time, availability, and trust. It is also weakened by the children's general expectation that child-welfare officers only act in their official role, a role that is associated with a formal and distanced relationship.

    Place, publisher, year, edition, pages
    John Wiley & Sons, 2017
    Keywords
    child welfare, foster care, interviewing children, professional ethics/issues
    National Category
    Social Work
    Identifiers
    urn:nbn:se:oru:diva-56215 (URN)10.1111/cfs.12362 (DOI)000412739100009 ()2-s2.0-85014796076 (Scopus ID)
    Available from: 2017-03-09 Created: 2017-03-09 Last updated: 2019-03-12Bibliographically approved
    2. Professional dilemmas and occupational constraints in child welfare workers' relationships with children and youth in foster care
    Open this publication in new window or tab >>Professional dilemmas and occupational constraints in child welfare workers' relationships with children and youth in foster care
    2018 (English)In: Children and youth services review, ISSN 0190-7409, E-ISSN 1873-7765, Vol. 88, p. 333-340Article in journal (Refereed) Published
    Abstract [en]

    At the same time as the number of child and youth placements in foster care is increasing in Sweden, some serious deficiencies have been highlighted, such as instability in placements and shortcomings in the social services' monitoring. Because the child welfare workers are ultimately responsible for these children's situation, understanding how they handle their multi-dimensional occupational role is crucial. The aim of this article is to study child welfare workers' individual and collective experiences of and expectations about their occupational role and responsibilities in their administrative and relational work with children and youth in foster care. Individual interviews with child welfare workers from a previous evaluation of a national pilot project, and two focus groups with child welfare workers, constitute the empirical basis. Theoretically the article explores central concepts such as sub-roles, dilemmas, professionalism, and functional specificity. The results show that the child welfare workers are burdened by a heavy workload, but that the prerequisites and the obstacles they face also must be understood in relation to prevailing contradictions and dilemmas in their occupational role. Even though the child welfare workers stress that professionalism is about putting relational work first, their activity is dominated by administrative tasks and functional specificity.

    Place, publisher, year, edition, pages
    Elsevier, 2018
    National Category
    Social Work
    Research subject
    Social Work
    Identifiers
    urn:nbn:se:oru:diva-66184 (URN)10.1016/j.childyouth.2018.03.039 (DOI)000432640800038 ()2-s2.0-85044447636 (Scopus ID)
    Available from: 2018-03-27 Created: 2018-03-27 Last updated: 2019-03-12Bibliographically approved
    3. Institutionella ramar för relationen mellan familjehemsplacerade ungdomar och deras socialsekreterare
    Open this publication in new window or tab >>Institutionella ramar för relationen mellan familjehemsplacerade ungdomar och deras socialsekreterare
    2018 (Swedish)In: Relationer i socialt arbete: i gränslandet mellan profession och person / [ed] Anders Bruhn & Åsa Källström, Stockholm: Liber, 2018, 1, p. 107-122Chapter in book (Refereed)
    Place, publisher, year, edition, pages
    Stockholm: Liber, 2018 Edition: 1
    National Category
    Social Work
    Research subject
    Social Work
    Identifiers
    urn:nbn:se:oru:diva-66185 (URN)978-91-47-11311-8 (ISBN)
    Available from: 2018-03-27 Created: 2018-03-27 Last updated: 2019-03-12Bibliographically approved
    4. Individualizing or categorizing recognition?: Conceptual discussions concerning the relationship between foster children and their child welfare workers
    Open this publication in new window or tab >>Individualizing or categorizing recognition?: Conceptual discussions concerning the relationship between foster children and their child welfare workers
    (English)Manuscript (preprint) (Other academic)
    National Category
    Social Work
    Identifiers
    urn:nbn:se:oru:diva-73096 (URN)
    Available from: 2019-03-12 Created: 2019-03-12 Last updated: 2019-03-12Bibliographically approved
  • Jönsson, Jessica H.
    Mid University, Östersund, Sweden.
    Localised Globalities and Social Work: Contemporary Challenges2014Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Recent global and structural transformations, a West-centric development agenda and the triumph of neoliberal politics have led to destructive consequences for many local communities and individual life chances. The global dominance of the West-centric development agenda, with its roots in the colonial past, has created uneven developments and an unjust world in which Western countries continue to gain advantages and increase their prosperity. Although a minority elite in many non-Western countries share the same interests as Western countries and their global organs, the majority of people in these countries are suffering from increasing socioeconomic inequalities. As a result of the dogmatic belief in a singular and West-centric modernity and its practices, many problems are considered to be the result of non-Western countries’ inabilities to complete the project of modernity in accordance with Western blueprints. This has also influenced social work as a global and modern profession. Social problems are often individualised and the reasons behind many inequalities are increasingly related to non-Western people’s individual shortcomings and traditional cultural backgrounds. In Western and non-Western countries equally are the neoliberal structural and institutional transformations ignored and social problems of individuals and families defined as a matter of wrong and deviant actions and choices.

    The main objective of the dissertation, which is constituted of four articles and an overall introduction and summary, is to examine the consequences of recent neoliberal globalisation based on the belief in a single and West-centric modernity and development agenda and their consequences for social work facing increasing global inequalities. The following research questions have guided the work: ‘How can social work play an effective role in combating social problems and otherisation, marginalisation and increasing inequalities in a globalised world?’, ‘How does the global development agenda function within the local arenas of social work?’, ‘Are development projects improving people’s life chances in local communities in non-Western countries?’, ‘How informed and responsive are social workers towards the global context of local problems?’

    The work is based on a qualitative design using qualitative content analysis for analysing data collected through interviews, participant observations and official documents. The results show that irrespective of where and in which context social problems are appearing, since local problems often have global roots, a global perspective to local problems should be included in every practices of social work in order to develop new methods of practices in an increasingly globalised field of work. Destruction of local communities, forced migration from non-Western countries, and marginalisation of people with immigrant background in Western countries should not be considered only as local problems, but also as problems with their roots in global structural inequalities which reproduces global social problems with local consequences.

    It is argued that social work should consider the dilemmas and problems connected to the taken for granted West-centric theories, understandings and practices of social work in order to develop new methods of practices for combating social problems, marginalisation and increasing inequalities in a globalised world. Such a position includes practicing multilevel social work, social work in global alliances beyond the division of East and West, and mobilisation against neoliberalism and the retreat of the welfare state. This requires critical standpoints against the relationship between the global context of the neoliberal ideology and practices in a Western-dominated and postcolonial world and the daily practices of social work.

     

     

  • Jonsson, Marcus
    Örebro University, School of Medical Sciences.
    Physiotherapy and physical activity in patients undergoing cardiac or lung cancer surgery2019Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Cardiovascular diseases are the leading cause of death worldwide. Cardiac surgery is performed to improve prognosis, relieve symptoms and increase functional capacity in patients with cardiac disease. Postoperative pulmonary complications are common after cardiac surgery and a reduced lung function can persist a long time after surgery. A positive association between level of physical activity and lung function has been proposed in both healthy individuals and people with different disabilities. It is not clear if there is an association between level of physical activity and recovery of lung function after cardiac surgery. Lung cancer is one of the most frequently diagnosed forms of cancer worldwide, and a leading cause of cancer deaths. Surgical resection is the primary approach for curative treatment. Despite the fact that physical activity has many positive effects on health, patients undergoing lung cancer surgery often report a low level of physical activity. Measuring physical activity is not easy, self-reported physical activity remains the most clinically applicable type of measurement, and a simple and valid questionnaire for screening patients would be valuable. Patients undergoing lung cancer surgery are often routinely treated by physiotherapists, but this kind of treatment has not been thoroughly investigated. The purpose of this thesis was to investigate the effect of physiotherapy and physical activity in patients undergoing cardiac or lung cancer surgery. This thesis include one cohort study of physical activity and recovery of lung function in patients undergoing cardiac surgery, one validation study of two self-reported physical activity instruments in patients undergoing lung cancer surgery, and two randomized controlled trials investigating the effect of physiotherapy for patients undergoing lung cancer surgery. In study I, patients who remained active or increased their level of physical activity had better recovery of lung function, compared to patients who remained sedentary or reported a lower level of physical activity postoperatively. In study II, two self-reported physical activity instruments were validated against accelerometer data in patients three and twelve months after lung cancer surgery. Both instruments were found able to identify patients not meeting recommendations on physical activity. In study III, patients treated by physiotherapists were significantly more active during the first three days after lung cancer surgery, compared to an untreated control group. In study IV, no between-group differences three months after surgery were found between patients receiving in-hospital physiotherapy compared to an untreated control group. However, the patients in the treatment group reported an increase of physical activity three months after surgery compared to preoperatively, while the patients in the control group did not.

    List of papers
    1. Self-reported physical activity and lung function two months after cardiac surgery: a prospective cohort study
    Open this publication in new window or tab >>Self-reported physical activity and lung function two months after cardiac surgery: a prospective cohort study
    2014 (English)In: Journal of Cardiothoracic Surgery, ISSN 1749-8090, E-ISSN 1749-8090, Vol. 9, article id 59Article in journal (Refereed) Published
    Abstract [en]

    Background: Physical activity has well-established positive health-related effects. Sedentary behaviour has been associated with postoperative complications and mortality after cardiac surgery. Patients undergoing cardiac surgery often suffer from impaired lung function postoperatively. The association between physical activity and lung function in cardiac surgery patients has not previously been reported.

    Methods: Patients undergoing cardiac surgery were followed up two months postoperatively. Physical activity was assessed on a four-category scale (sedentary, moderate activity, moderate regular exercise, and regular activity and exercise), modified from the Swedish National Institute of Public Health's national survey. Formal lung function testing was performed preoperatively and two months postoperatively.

    Results: The sample included 283 patients (82% male). Two months after surgery, the level of physical activity had increased (p < 0.001) in the whole sample. Patients who remained active or increased their level of physical activity had significantly better recovery of lung function than patients who remained sedentary or had decreased their level of activity postoperatively in terms of vital capacity (94 +/- 11% of preoperative value vs. 91 (+/-) 9%; p = 0.03), inspiratory capacity (94 +/- 14% vs. 88 +/- 19%; p = 0.008), and total lung capacity (96 +/- 11% vs. 90 +/- 11%; p = 0.01).

    Conclusions: An increased level of physical activity, compared to preoperative level, was reported as early as two months after surgery. Our data shows that there could be a significant association between physical activity and recovery of lung function after cardiac surgery. The relationship between objectively measured physical activity and postoperative pulmonary recovery needs to be further examined to verify these results.

    Place, publisher, year, edition, pages
    London: BioMed Central, 2014
    Keywords
    Cardiac surgery, Lung function, Physical activity
    National Category
    Cardiac and Cardiovascular Systems
    Identifiers
    urn:nbn:se:oru:diva-35213 (URN)10.1186/1749-8090-9-59 (DOI)000335462200001 ()24678691 (PubMedID)2-s2.0-84901980219 (Scopus ID)
    Funder
    Swedish Heart Lung FoundationSwedish Research Council
    Note

    Funding Agencies:

    Research Committee of Orebro County Council

    Swedish Heart and Lung Patients National Association

    Uppsala University

    Uppsala-Orebro Regional Research Council, Sweden

    Available from: 2014-06-03 Created: 2014-06-02 Last updated: 2019-04-10Bibliographically approved
    2. Validation of two self-reported physical activity instruments for patients who have undergone lung cancer surgery
    Open this publication in new window or tab >>Validation of two self-reported physical activity instruments for patients who have undergone lung cancer surgery
    (English)Manuscript (preprint) (Other academic)
    National Category
    Surgery
    Identifiers
    urn:nbn:se:oru:diva-73595 (URN)
    Available from: 2019-04-10 Created: 2019-04-10 Last updated: 2019-04-10Bibliographically approved
    3. In-hospital physiotherapy improves physical activity level after lung cancer surgery: a randomized controlled trial
    Open this publication in new window or tab >>In-hospital physiotherapy improves physical activity level after lung cancer surgery: a randomized controlled trial
    Show others...
    2018 (English)In: Physiotherapy, ISSN 0031-9406, E-ISSN 1873-1465Article in journal (Refereed) Epub ahead of print
    Abstract [en]

    OBJECTIVES: Patients undergoing lung cancer surgery are routinely offered physiotherapy. Despite its routine use, effects on postoperative physical recovery have yet not been demonstrated. The aim of this study was to investigate whether physiotherapy could improve postoperative in-hospital physical activity level and physical capacity.

    DESIGN: Single-blind randomized controlled trial.

    SETTING: Thoracic surgery department at a University Hospital.

    PARTICIPANTS: Patients undergoing elective thoracic surgery (n=94) for confirmed or suspected lung cancer were assessed during hospital stay.

    INTERVENTION: Daily physiotherapy, consisting of mobilization, ambulation, shoulder exercises and breathing exercises. The control group received no physiotherapy treatment.

    OUTCOMES: In-hospital physical activity assessed with the Actigraph GT3X+ accelerometer, six-minute walk test, spirometry and dyspnea scores.

    RESULTS: The treatment group reached significantly more accelerometer counts (2010 (1508) vs 1629 (1146), mean difference 495 [95% CI 44 to 1109]), and steps per hour (49 (47) vs 37 (34), mean difference 14 [95% CI 3 to 30]), compared to the control group, during the first three postoperative days. No significant differences in six-minute walk test (percent of preoperative 71% vs 79%, P=0.13), spirometry (FEV1 percent of preoperative 69% vs 69%, P=0.83) or dyspnoea (M-MRC 2 vs 2, P=0.74) between the groups were found.

    CONCLUSIONS: Patients receiving in-hospital physiotherapy showed increased level of physical activity during the first days after lung cancer surgery, compared to an untreated control group. However, no effects on the six-minute walk test or spirometric values were found. The clinical importance of an increased physical activity level during the early postoperative period needs to be further evaluated.

    CLINICAL TRIAL REGISTRATION NUMBER: NCT01961700.

    Place, publisher, year, edition, pages
    Elsevier, 2018
    Keywords
    Lung cancer, Physical activity, Physical therapy, Randomized clinical trial
    National Category
    Surgery Cancer and Oncology
    Identifiers
    urn:nbn:se:oru:diva-73624 (URN)10.1016/j.physio.2018.11.001 (DOI)30871894 (PubMedID)
    Available from: 2019-04-10 Created: 2019-04-10 Last updated: 2019-04-10Bibliographically approved
    4. In-hospital physiotherapy and physical recovery three months after lung cancer surgery: a randomized controlled trial
    Open this publication in new window or tab >>In-hospital physiotherapy and physical recovery three months after lung cancer surgery: a randomized controlled trial
    Show others...
    (English)Manuscript (preprint) (Other academic)
    National Category
    Cancer and Oncology Surgery
    Identifiers
    urn:nbn:se:oru:diva-73625 (URN)
    Available from: 2019-04-10 Created: 2019-04-10 Last updated: 2019-04-10Bibliographically approved
  • Jönsson, Jessica H.
    Mid Sweden University, Östersund, Sweden.
    Development and empowerment through the Crèche and the role of female sex workers: Field practice in India2011Report (Other academic)
  • Jönsson, Jessica H.
    Department of Social work, Mid Sweden University, Östersund, Sweden.
    Servants of a 'sinking Titanic' or actors of change?: contested identities of social workers in Sweden [Passiva tjänare av ‘ett sjunkande skepp’ eller förändringsaktörer? Ifrågasatta identiteter hos socialarbetare i Sverige]2019In: European Journal of Social Work, ISSN 1369-1457, E-ISSN 1468-2664, Vol. 22, no 2, p. 212-224Article in journal (Refereed)
    Abstract [en]

    Historically, social workers have been an integral part of a well-developed welfare state in Sweden. However, due to the neoliberal changes, which have seen the weakening of the support system for vulnerable groups and individuals, the traditional ‘solidary role’ of social workers has rapidly altered. This has created uncertainty and dilemmas for the identification of many social workers, who still perceive themselves as promoters of ‘welfare of the people’. This article dwells, therefore, on neoliberal transformations and the changing professional identity of practitioners. The study is based on a comprehensive empirical work of interviews with social workers. The results show a growing and widespread unease with new professional roles and functions of social workers as bureaucrats within a neoliberalised organisation of public social work. Some social workers still try to find creative and new ways of working in solidarity, while others, although critical, see adjustment to the new organisational frames as a way to continue their work. It is argued that social workers are not passive actors in the process of neoliberalisation of public social work in Sweden but could actively take different stances and choose their own identifications, in order to maintain the solidary role of social workers.

  • Jönsson, Jessica H.
    et al.
    Department of Social Work, Mid Sweden University, Östersund, Sweden.
    Flem, Aina Lian
    Norwegian University of Science and Technology, Trondheim, Norway.
    International field training in social work education: beyond colonial divides2018In: Social Work Education, ISSN 0261-5479, E-ISSN 1470-1227, Vol. 37, no 7, p. 895-908Article in journal (Refereed)
    Abstract [en]

    This paper examines the influence of and need for a critical and global-oriented social work education on students’ learning and developments in the context of international field training. The study uses mixed methods strategy of web survey, focus groups and document review of field reports. Participants in the study are social work students from social work programs in Norway and Sweden who have conducted their international field training in the Global South. The results of the study show that in order to obtain a critical and postcolonial understanding of global inequalities and the role of social work, students need to be truly prepared for international field training by critical and postcolonial knowledge, which will challenge many students’ West-centric perspectives and facilitate them by a self-reflective positioning throughout their field training. The imagination of traveling to and ‘learning about the others’ should be then replaced by a move beyond ‘us-and-them’ divides in line with the ethical principles and values of social work.

  • Qandeel, Mais
    Fribourg, Switzerland.
    Enforcing Human Rights of Palestinians in the Occupied Territory2018 (ed. 1)Book (Refereed)
  • Jansson, Anton
    et al.
    Örebro University, School of Science and Technology.
    Pejryd, Lars
    Örebro University, School of Science and Technology.
    Dual-energy computed tomography investigation of additive manufacturing aluminium: carbon-fibre composite joints2019In: Heliyon, ISSN 2405-8440, Vol. 5, no 2, article id e01200Article in journal (Refereed)
    Abstract [en]

    In this work, aluminium–carbon-fibre reinforced plastic joints have been studied. Three types of samples were designed as double lap joints where the aluminium inserts were fabricated using both classical methods (milling) and additive manufacturing. Two versions of the joint were fabricated using additive manufacturing, one flat, and the other with small teeth designed to hook into the carbon-fibre plies. The joints were characterised using a non-linear, dual-energy computed tomography method to evaluate the bond between the composite and the metal inserts. The mechanical strength of the bonds was evaluated, both through tensile tests and four-point bending. A simple finite element model was used to discuss the joints behaviour. It was found that the joints fabricated using additive manufactured inserts were more resistant to peel stress than the milled inserts. In four-point bending tests the moment that the joint could withstand was increased by roughly 300% with the use of additive manufacturing and 400% with the use of additive manufacturing and small teeth. However, in tensile tests it was found that the teeth design reduced the maximum load capacity of the joints by roughly 30% due to porosity. Further, it was found that the additive manufactured samples did not add to the capability of withstanding shearstress. The information gained with the dual-energy computed tomography method was highly valuable as the behaviour of the joints would have been difficult to explain without the porosity information.

  • Rosendahl, Lene
    et al.
    Department of Clinical Physiology, County Hospital Ryhov, Jönköping, Sweden; Center for Medical Image Science and Visualization, CMIV, Linköping University Hospital, Linköping, Sweden.
    Blomstrand, Peter
    Department of Clinical Physiology, County Hospital Ryhov, Jönköping, Sweden.
    Ohlsson, Jan L.
    Department of Clinical Physiology, County Hospital Ryhov, Jönköping, Sweden.
    Björklund, Per-Gunnar
    Department of Clinical Physiology, County Hospital Ryhov, Jönköping, Sweden.
    Ahlander, Britt-Marie
    Department of Radiology, County Hospital Ryhov, Jönköping, Sweden.
    Starck, Sven-Ake
    Hospital Physics Unit, Dept. Of Oncology, County Hospital Ryhov, Jönköping, Sweden.
    Engvall, Jan E.
    Center for Medical Image Science and Visualization, CMIV, Linköping, Sweden; Department of Clinical Physiology, Linköping University Hospital, Linköping, Sweden.
    Late gadolinium uptake demonstrated with magnetic resonance in patients where automated PERFIT analysis of myocardial SPECT suggests irreversible perfusion defect2008In: BMC Medical Imaging, ISSN 1471-2342, E-ISSN 1471-2342, Vol. 8, article id 17Article in journal (Refereed)
    Abstract [en]

    BACKGROUND: Myocardial perfusion single photon emission computed tomography (MPS) is frequently used as the reference method for the determination of myocardial infarct size. PERFIT(R) is a software utilizing a three-dimensional gender specific, averaged heart model for the automatic evaluation of myocardial perfusion. The purpose of this study was to compare the perfusion defect size on MPS, assessed with PERFIT, with the hyperenhanced volume assessed by late gadolinium enhancement magnetic resonance imaging (LGE) and to relate their effect on the wall motion score index (WMSI) assessed with cine magnetic resonance imaging (cine-MRI) and echocardiography (echo).

    METHODS: LGE was performed in 40 patients where clinical MPS showed an irreversible uptake reduction suggesting a myocardial scar. Infarct volume, extent and major coronary supply were compared between MPS and LGE as well as the relationship between infarct size from both methods and WMSI.

    RESULTS: MPS showed a slightly larger infarct volume than LGE (MPS 29.6 +/- 23.2 ml, LGE 22.1 +/- 16.9 ml, p = 0.01), while no significant difference was found in infarct extent (MPS 11.7 +/- 9.4%, LGE 13.0 +/- 9.6%). The correlation coefficients between methods in respect to infarct size and infarct extent were 0.71 and 0.63 respectively. WMSI determined with cine-MRI correlated moderately with infarct volume and infarct extent (cine-MRI vs MPS volume r = 0.71, extent r = 0.71, cine-MRI vs LGE volume r = 0.62, extent r = 0.60). Similar results were achieved when wall motion was determined with echo. Both MPS and LGE showed the same major coronary supply to the infarct area in a majority of patients, Kappa = 0.84.

    CONCLUSION: MPS and LGE agree moderately in the determination of infarct size in both absolute and relative terms, although infarct volume is slightly larger with MPS. The correlation between WMSI and infarct size is moderate.

  • Rosendahl, Lene
    et al.
    Department of Clinical Physiology, Ryhov County Hospital, Jönköping, Sweden; Center for Medical Image Science and Visualization, Linköping University, Linköping, Sweden.
    Ahlander, Britt-Marie
    Department of Radiology, Ryhov County Hospital, Jönköping, Sweden.
    Björklund, Per-Gunnar
    Department of Clinical Physiology, Ryhov County Hospital, Jönköping, Sweden.
    Blomstrand, Peter
    Department of Clinical Physiology, Ryhov County Hospital, Jönköping, Sweden.
    Brudin, Lars
    Department of Clinical Physiology, Kalmar County Hospital, Kalmar, Sweden; Department of Medical and Health Sciences, Linköping University, Linköping, Sweden.
    Engvall, Jan E.
    Center for Medical Image Science and Visualization, Linköping University, Linköping, Sweden.
    Image quality and myocardial scar size determined with magnetic resonance imaging in patients with permanent atrial fibrillation: a comparison of two imaging protocols2010In: Clinical Physiology and Functional Imaging, ISSN 1475-0961, E-ISSN 1475-097X, Vol. 30, no 2, p. 122-129Article in journal (Refereed)
    Abstract [en]

    BACKGROUND: Magnetic resonance imaging (MRI) of the heart generally requires breath holding and a regular rhythm. Single shot 2D steady-state free precession (SS_SSFP) is a fast sequence insensitive to arrhythmia as well as breath holding. Our purpose was to determine image quality, signal-to-noise (SNR) and contrast-to-noise (CNR) ratios and infarct size with a fast single shot and a standard segmented MRI sequence in patients with permanent atrial fibrillation and chronic myocardial infarction.

    METHODS: Twenty patients with chronic myocardial infarction and ongoing atrial fibrillation were examined with inversion recovery SS_SSFP and segmented inversion recovery 2D fast gradient echo (IR_FGRE). Image quality was assessed in four categories: delineation of infarcted and non-infarcted myocardium, occurrence of artefacts and overall image quality. SNR and CNR were calculated. Myocardial volume (ml) and infarct size, expressed as volume (ml) and extent (%), were calculated, and the methodological error was assessed.

    RESULTS: SS_SSFP had significantly better quality scores in all categories (P = 0.037, P = 0.014, P = 0.021, P = 0.03). SNR(infarct) and SNR(blood) were significantly better for IR_FGRE than for SS_SSFP (P = 0.048, P = 0.018). No significant difference was found in SNR(myocardium) and CNR. The myocardial volume was significantly larger with SS_SSFP (170.7 versus 159.2 ml, P<0.001), but no significant difference was found in infarct volume and infarct extent.

    CONCLUSION: SS_SSFP displayed significantly better image quality than IR_FGRE. The infarct size and the error in its determination were equal for both sequences, and the examination time was shorter with SS_SSFP.

  • Ahlander, Britt-Marie
    et al.
    Örebro University, School of Health Sciences. Department of Radiology, Ryhov County Hospital, Jönköping, Sweden.
    Maret, Eva
    Department of Radiology, Ryhov County Hospital, Jönköping, Sweden; Department of Clinical Physiology, Karolinska University Hospital, Stockholm, Sweden.
    Brudin, Lars
    Department of Clinical Physiology, Kalmar County Hospital, Kalmar, Sweden.
    Starck, Sven-Ake
    Department of Natural Science and Biomedicine, School of Health Sciences, Jönköping University, Jönköping, Sweden; Department of Oncology, Hospital Physics, Ryhov County Hospital, Jönköping, Sweden.
    Engvall, Jan
    Department of Medical and Health Sciences, Linköping University, Linköping, Sweden; Department of Clinical Physiology, County Council of Östergötland, Linköping, Sweden; Center of Medical Image Science and Visualisation, Linköping University, Linköping, Sweden.
    An echo-planar imaging sequence is superior to a steady-state free precession sequence for visual as well as quantitative assessment of cardiac magnetic resonance stress perfusion2017In: Clinical Physiology and Functional Imaging, ISSN 1475-0961, E-ISSN 1475-097X, Vol. 37, no 1, p. 52-61Article in journal (Refereed)
    Abstract [en]

    BACKGROUND: To assess myocardial perfusion, steady-state free precession cardiac magnetic resonance (SSFP, CMR) was compared with gradient-echo-echo-planar imaging (GRE-EPI) using myocardial perfusion scintigraphy (MPS) as reference.

    METHODS: Cardiac magnetic resonance perfusion was recorded in 30 patients with SSFP and in another 30 patients with GRE-EPI. Timing and extent of inflow delay to the myocardium was visually assessed. Signal-to-noise (SNR) and contrast-to-noise (CNR) ratios were calculated. Myocardial scar was visualized with a phase-sensitive inversion recovery sequence (PSIR). All scar positive segments were considered pathologic. In MPS, stress and rest images were used as in clinical reporting. The CMR contrast wash-in slope was calculated and compared with the stress score from the MPS examination. CMR scar, CMR perfusion and MPS were assessed separately by one expert for each method who was blinded to other aspects of the study.

    RESULTS: Visual assessment of CMR had a sensitivity for the detection of an abnormal MPS at 78% (SSFP) versus 91% (GRE-EPI) and a specificity of 58% (SSFP) versus 84% (GRE-EPI). Kappa statistics for SSFP and MPS was 0·29, for GRE-EPI and MPS 0·72. The ANOVA of CMR perfusion slopes for all segments versus MPS score (four levels based on MPS) had correlation r = 0·64 (SSFP) and r = 0·96 (GRE-EPI). SNR was for normal segments 35·63 ± 11·80 (SSFP) and 17·98 ± 8·31 (GRE-EPI), while CNR was 28·79 ± 10·43 (SSFP) and 13·06 ± 7·61 (GRE-EPI).

    CONCLUSION: GRE-EPI displayed higher agreement with the MPS results than SSFP despite significantly lower signal intensity, SNR and CNR.

  • Rosendahl, Lene
    et al.
    Department of Clinical Physiology, County Hospital Ryhov, Jönköping, Sweden; Center for Medical Image Science and Visualization, CMIV, Linköping, Sweden.
    Blomstrand, Peter
    Department of Clinical Physiology, County Hospital Ryhov, Jönköping, Sweden.
    Heiberg, Einar
    Department of Clinical Physiology, Lund University Hospital, Lund, Sweden.
    Ohlsson, Jan
    Department of Clinical Physiology, County Hospital Ryhov, Jönköping, Sweden.
    Björklund, Per-Gunnar
    Department of Clinical Physiology, County Hospital Ryhov, Jönköping, Sweden.
    Ahlander, Britt-Marie
    Department of Radiology, County Hospital Ryhov, Jönköping, Sweden.
    Engvall, Jan
    Center for Medical Image Science and Visualization, CMIV, Linköping, Sweden; Department of Clinical Physiology, Linköping University Hospital, Linköping, Sweden.
    Computer-assisted calculation of myocardial infarct size shortens the evaluation time of contrast-enhanced cardiac MRI2008In: Clinical Physiology and Functional Imaging, ISSN 1475-0961, E-ISSN 1475-097X, Vol. 28, no 1, p. 1-7Article in journal (Refereed)
    Abstract [en]

    BACKGROUND: Delayed enhancement magnetic resonance imaging depicts scar in the left ventricle which can be quantitatively measured. Manual segmentation and scar determination is time consuming. The purpose of this study was to evaluate a software for infarct quantification, to compare with manual scar determination, and to measure the time saved.

    METHODS: Delayed enhancement magnetic resonance imaging was performed in 40 patients where myocardial perfusion single photon emission computed tomography imaging showed irreversible uptake reduction suggesting a myocardial scar. After segmentation, the semi-automatic software was applied. A scar area was displayed, which could be corrected and compared with manual delineation. The different time steps were recorded with both methods.

    RESULTS: The software shortened the average evaluation time by 12.4 min per cardiac exam, compared with manual delineation. There was good correlation of myocardial volume, infarct volume and infarct percentage (%) between the two methods, r = 0.95, r = 0.92 and r = 0.91 respectively.

    CONCLUSION: A computer software for myocardial volume and infarct size determination cut the evaluation time by more than 50% compared with manual assessment, with maintained clinical accuracy.

  • Lindner, Helen
    et al.
    Örebro University, School of Health Sciences.
    Montgomery, Scott
    Örebro University, School of Medical Sciences. Clinical Epidemiology Unit, Department of Medicine, Karolinska Institute, Stockholm, Sweden; Department of Epidemiology and Public Health, University College London, London, Sweden.
    Hiyoshi, Ayako
    Örebro University, School of Medical Sciences.
    Risk of depression following traumatic limb amputation: a general population-based cohort study2018In: Book of Abstracts / [ed] Burger, Helena & Mlakar, Maja, Ljubjana, Slovenia: ISPO Slovena , 2018, p. 9-9Conference paper (Refereed)
    Abstract [en]

    INTRODUCTION: Traumatic limb amputation (TLA) is a sudden event that accompanies life changes in physical functioning, body image and challenges in daily lives. Amputees may experience significant levels of distress and be at risk of depression may be at risk of depression. However, evidence for depression risk after TLA has been limited because of the use of cross-sectional study design of a small or selected sample and the lack of a comparison with non-amputees. Confounding from pre-amputated occupational and individual characteristics was possible but no study has controlled for these.  AIMS: We aimed to examine whether amputation may be associated with an increased risk of depression required inpatient and outpatient hospital treatment. 

    METHODS: Our study population was drawn from a cohort of men (n=284,257) who underwent a compulsory conscription assessment for between 1969 and 1976. Complete data were available for 189,220 men. We followed these men from 1st January 1985, when these men were between age 29 and 34 years until the date of depression. We used the ICD codes in Swedish patient register to identify TLA (primary and secondary diagnosis) and depression after TLA (primary diagnosis). Cox regression was used to calculate hazard ratios and 95% confidence intervals [CI] for the association of amputation with depression. Age was used as the underlying time scale, and the diagnosis of amputation was included as a time-dependent exposure status, with the value zero before amputation and one after the date of amputation. Birth year, region, occupation, cognitive and physical function and stress resilience in adolescence were considered as potential confounding factors and adjusted for in the analysis. 

    RESULTS: In total 401 men experienced amputation between 1985 and 2009, with the mean age of amputation was age 42.5 years (SD 7.4). Those who experience amputation were more likely to have low stress resilience and cognitive function in adolescence and engaged in farming and manual work in 1985.  Cox regression produced unadjusted hazard ratio 2.61 (CI 1.62-4.21, p<0.001), i.e. 2.61 times risk of subsequent depression diagnosis for risk of subsequent depression compared with amputation-free individuals. Moderate and low cognitive function, physical fitness and stress resilience were associated with elevated risk of depression. Working for farms and manual work was also associated with higher depression risk. When the analysis was adjusted for these factors, the risk of depression after amputation changed little, 2.53 (CI 1.57-4.08, p <0.001) times risk of depression remained compared with amputation-free individuals.

    CONCLUSIONS: As we hypothesized, TLA was associated with an increased risk of depression over more than two decades of follow-up of men from age 29 to 57 years. Higher levels of depressive symptoms were noted among working age amputees and our study group also comprised of working age amputees.  Future research may benefit from investigating potential influence of different amputation sites, degree, and prosthesis use involved in order to set intervention target. 

  • van der Veen, Ike
    et al.
    Vrije Universiteit, Dept. Environment & Health, Amsterdam, The Netherlands.
    Fiedler, Heidelore
    Örebro University, School of Science and Technology.
    de Boer, Jacob
    Vrije Universiteit, Dept. Environment & Health, Amsterdam, The Netherlands.
    Bi-ennial Global Interlaboratory Assessment on Persistent Organic Pollutants – Third Round 2016/2017, Organochlorine Pesticides, PCBs and Brominated Flame Retardants2017In: Organohalogen Compounds, Vol. 79, p. 575-578Article in journal (Refereed)
  • Fiedler, Heidelore
    et al.
    Örebro University, School of Science and Technology.
    van der Veen, Ike
    Vrije Universiteit, Environment & Health, Amsterdam, Netherlands.
    de Boer, Jacob
    Vrije Universiteit, Environment & Health, Amsterdam, Netherlands.
    Bi-ennial Global Interlaboratory Assessment on Persistent Organic Pollutants: Third Round 2016/2017, Dioxin-like POPs and Perfluorinated Alkyl Substances2017In: Organohalogen Compounds, Vol. 79, p. 237-240Article in journal (Refereed)
  • Marshall, Matilda
    et al.
    Örebro University, School of Hospitality, Culinary Arts & Meal Science. Restauranghögskolan, Umeå universitet, Umeå.
    Hagström, Charlotte
    Institutionen för kulturvetenskaper, Lunds universitet, Lund.
    ”Zone taken!”: Kunskap, förändring och kulturell gemenskap i mobilspelet Turf2018In: Idrott, historia & samhälle, ISSN 0280-2775, p. 72-91Article in journal (Refereed)
    Abstract [en]

    How does a mobile game become a sport related community with its own cultural expressions and norms? This explorative article examines Turf, a mobile game where the players use the GPS function to navigate both a digital map and the physical landscape. By locating digital zones in the landscape, similar to the sport ori- enteering, the player gains points. Around the game various social activities, relations and norms have evolved. The purpose of this article is to empirically explore the phenomenon and its develop- ment and to discuss how cultural connections are created and es- tablished. We depart from the assumption that the digital game does not exclude a relation with the physical environment; instead there is an interaction between the digital and physical landscape that create new meanings and relations. Since the introduction in 2010, the game has created its own set of language, patterns of movement, objects and norms. Further, as the game is constantly evolving, so is the players’ use of Turf, which is a prerequisite for the survival of cultural phenomena.

  • Volgsten, Ulrik
    Örebro University, School of Music, Theatre and Art.
    Affekt, minne och identifikation: Om makten över musikens makt2018In: Musikens makt / [ed] Jenny Björkman & Arne Jarrick, Göteborg: Makadam Förlag, 2018, p. 51-66Chapter in book (Refereed)
    Abstract [sv]

    Musiken är ett känslornas språk som har makt att påverka oss som hör den. Men hur går det till? Och finns det något positivt sätt att ta tillvara musikens makt på?

  • Wiedemann, Thomas
    et al.
    German Aerospace Center, Oberpfaffenhofen, Germany.
    Lilienthal, Achim
    Örebro University, School of Science and Technology.
    Shutin, Dmitriy
    German Aerospace Center, Oberpfaffenhofen, Germany.
    Analysis of Model Mismatch Effects for a Model-based Gas Source Localization Strategy Incorporating Advection Knowledge2019In: Sensors, ISSN 1424-8220, E-ISSN 1424-8220, Vol. 19, no 3, article id 520Article in journal (Refereed)
    Abstract [en]

    In disaster scenarios, where toxic material is leaking, gas source localization is a common but also dangerous task. To reduce threats for human operators, we propose an intelligent sampling strategy that enables a multi-robot system to autonomously localize unknown gas sources based on gas concentration measurements. This paper discusses a probabilistic, model-based approach for incorporating physical process knowledge into the sampling strategy. We model the spatial and temporal dynamics of the gas dispersion with a partial differential equation that accounts for diffusion and advection effects. We consider the exact number of sources as unknown, but assume that gas sources are sparsely distributed. To incorporate the sparsity assumption we make use of sparse Bayesian learning techniques. Probabilistic modeling can account for possible model mismatch effects that otherwise can undermine the performance of deterministic methods. In the paper we evaluate the proposed gas source localization strategy in simulations using synthetic data. Compared to real-world experiments, a simulated environment provides us with ground truth data and reproducibility necessary to get a deeper insight into the proposed strategy. The investigation shows that (i) the probabilistic model can compensate imperfect modeling; (ii) the sparsity assumption significantly accelerates the source localization; and (iii) a-priori advection knowledge is of advantage for source localization, however, it is only required to have a certain level of accuracy. These findings will help in the future to parameterize the proposed algorithm in real world applications.

  • Burgués, Javier
    et al.
    Institute for Bioengineering of Catalonia (IBEC),The Barcelona Institute of Science and Technology, Baldiri Reixac, Barcelona, Spain; Department of Electronics and Biomedical Engineering, Universitat de Barcelona, Barcelona, Spain.
    Hernandez Bennetts, Victor
    Örebro University, School of Science and Technology.
    Lilienthal, Achim
    Örebro University, School of Science and Technology.
    Marco, Santiago
    Institute for Bioengineering of Catalonia (IBEC),The Barcelona Institute of Science and Technology, Baldiri Reixac, Barcelona, Spain; Department of Electronics and Biomedical Engineering, Universitat de Barcelona, Barcelona, Spain.
    Smelling Nano Aerial Vehicle for Gas Source Localization and Mapping2019In: Sensors, ISSN 1424-8220, E-ISSN 1424-8220, Vol. 19, no 3, article id 478Article in journal (Refereed)
    Abstract [en]

    This paper describes the development and validation of the currently smallest aerial platform with olfaction capabilities. The developed Smelling Nano Aerial Vehicle (SNAV) is based on a lightweight commercial nano-quadcopter (27 g) equipped with a custom gas sensing board that can host up to two in situ metal oxide semiconductor (MOX) gas sensors. Due to its small form-factor, the SNAV is not a hazard for humans, enabling its use in public areas or inside buildings. It can autonomously carry out gas sensing missions of hazardous environments inaccessible to terrestrial robots and bigger drones, for example searching for victims and hazardous gas leaks inside pockets that form within the wreckage of collapsed buildings in the aftermath of an earthquake or explosion. The first contribution of this work is assessing the impact of the nano-propellers on the MOX sensor signals at different distances to a gas source. A second contribution is adapting the ‘bout’ detection algorithm, proposed by Schmuker et al. (2016) to extract specific features from the derivative of the MOX sensor response, for real-time operation. The third and main contribution is the experimental validation of the SNAV for gas source localization (GSL) and mapping in a large indoor environment (160 m2) with a gas source placed in challenging positions for the drone, for example hidden in the ceiling of the room or inside a power outlet box. Two GSL strategies are compared, one based on the instantaneous gas sensor response and the other one based on the bout frequency. From the measurements collected (in motion) along a predefined sweeping path we built (in less than 3 min) a 3D map of the gas distribution and identified the most likely source location. Using the bout frequency yielded on average a higher localization accuracy than using the instantaneous gas sensor response (1.38 m versus 2.05 m error), however accurate tuning of an additional parameter (the noise threshold) is required in the former case. The main conclusion of this paper is that a nano-drone has the potential to perform gas sensing tasks in complex environments.

  • Burgués, Javier
    et al.
    Department of Electronic and Biomedical Engineering, Universitat de Barcelona, Barcelona, Spain; Institute for Bioengineering of Catalonia (IBEC), Barcelona, Spain.
    Hernandez Bennetts, Victor
    Örebro University, School of Science and Technology.
    Lilienthal, Achim
    Örebro University, School of Science and Technology.
    Marco, Santiago
    Department of Electronic and Biomedical Engineering, Universitat de Barcelona, Barcelona, Spain; Institute for Bioengineering of Catalonia (IBEC), Barcelona, Spain.
    3D Gas Distribution with and without Artificial Airflow: An Experimental Study with a Grid of Metal Oxide Semiconductor Gas Sensors2018In: Proceedings, E-ISSN 2504-3900, Vol. 2, no 13, article id 911Article in journal (Refereed)
    Abstract [en]

    Gas distribution modelling can provide potentially life-saving information when assessing the hazards of gaseous emissions and for localization of explosives, toxic or flammable chemicals. In this work, we deployed a three-dimensional (3D) grid of metal oxide semiconductor (MOX) gas sensors deployed in an office room, which allows for novel insights about the complex patterns of indoor gas dispersal. 12 independent experiments were carried out to better understand dispersion patters of a single gas source placed at different locations of the room, including variations in height, release rate and air flow profiles. This dataset is denser and richer than what is currently available, i.e., 2D datasets in wind tunnels. We make it publicly available to enable the community to develop, validate, and compare new approaches related to gas sensing in complex environments.

  • Åhlgren, Kristina
    et al.
    Örebro University, School of Science and Technology.
    Sjöberg, Viktor
    Örebro University, School of Science and Technology.
    Bäckström, Mattias
    Örebro University, School of Science and Technology.
    Leaching of U, V, Ni and Mo from Alum Shale Waste as a Function of Redox and pH - Suggestion for a Leaching method2018In: Mine Water: Risk to Opportunity / [ed] Wolkersdorfer, Ch., Sartz, L., Weber, A., Burgess, J. and Tremblay, G., Pretoria, South Africa: Tshwane University of Technology , 2018, Vol. II, p. 782-787Conference paper (Refereed)
    Abstract [en]

    Alum shale residues in the form of nes and ash were leached at di erent pH and redox conditions. Total concentrations and mineral analysis indicate loss of some elements in burned shale, and redistribution of others. Uranium and nickel were shown to be more leachable from nes than from ashes. Decreased pH favoured leaching of Ni, U and V, whereas increased pH resulted in increased leaching of molybdenum. Redox conditions a ected leaching of Mo and V, but not U and Ni. us the method can be used as an estimate for leaching at di erent redox and pH conditions.

  • Sartz, Lotta
    et al.
    Örebro University, School of Science and Technology. Bergskraft Bergslagen AB, Kumla, Sweden.
    Sädbom, Stefan
    Bergskraft Bergslagen AB, Kumla, Sweden.
    Bäckström, Mattias
    Örebro University, School of Science and Technology. Bergskraft Bergslagen AB, Kumla, Sweden.
    Remediation of Historic Waste Rock by Injection of Green Liquor Dregs: Results From a Field Scale Trial, Gladhammar, Southern Sweden2018In: Mine Water: Risk to Opportunity / [ed] Wolkersdorfer, Ch., Sartz, L., Weber, A., Burgess, J. and Tremblay, G, Pretoria, South Africa: Tshwane University of Technology , 2018, Vol. II, p. 1124-1129Conference paper (Refereed)
    Abstract [en]

    Mining in Gladhammar, southern Sweden started in the 15th century, generating waste rock containing copper, cobalt, and arsenic. During remediation (2011) some waste rock was preserved, due to its geoscienti- c value, and placed on a geomembrane surface. Eventually, it became apparent that it had a substantial environmental impact (pH 3.8, Cu 96 mg/L, Co 21 mg/L). In 2017, green liquor dregs was injected in order to increase pH and decrease trace element mobility. Ten months a er injection pH was 8.3 and concentrations of copper and cobalt 1.3 mg/L and 1.1 mg/L, respectively. Evaluation will continue for at least five years.

  • Sartz, Lotta
    et al.
    Örebro University, School of Science and Technology. Bergskraft Bergslagen AB, Kumla, Sweden.
    Hamilton, Ian
    Econova Recycling AB, c/o Alfred Nobel Science Park, Örebro Sweden.
    Macsik, Josef
    Ecoloop AB, Stockholm, Sweden.
    Maurice, Christian
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Luleå, Sweden.
    Sädbom, Stefan
    Bergskraft Bergslagen AB, Kumla, Sweden.
    Westin, Gunnar
    RISE Processum AB, Örnsköldsvik, Sweden.
    Bäckström, Mattias
    Örebro University, School of Science and Technology. Bergskraft Bergslagen AB, Kumla, Sweden.
    Green Liquor Dregs from Pulp and Paper Industry used in Mine Waste Management: a Symbiosis Project (GLAD) between two Swedish Base Industries2017In: Mine Water & Circular Economy / [ed] Wolkersdorfer, C., Sartz, L., Sillanpää, M. and Häkkinen, A, Lappeenranta, Finland: Lappeenranta University of Technology , 2017, Vol. II, p. 862-868Conference paper (Refereed)
    Abstract [en]

    Mining has been and still is an important industry in Sweden. Leaching from sulfidic mining waste is however a serious environmental issue that can bring acidity and metals in solution. Simultaneously, green liquor dreg (GLD) with potential to decrease oxygen transport to the waste and neutralize acid leachate, is generated by the pulp and paper industry and deposited in landfills. The aim of the project is to promote valorisation of GLD, identify hinders and create a database providing information about the material and its variability to enhance establishment of circular economy for the pulp and paper mill waste.

  • Ekblom, Sanna
    et al.
    Örebro University, Örebro, Sweden.
    Sartz, Lotta
    Örebro University, School of Science and Technology.
    Bäckström, Mattias
    Örebro University, School of Science and Technology.
    Treatment of Historical Mining Waste using different Incineration Ashes2017In: Mine Water & Circular Economy / [ed] Wolkersdorfer, C., Sartz, L., Sillanpää, M. and Häkkinen, A, Lappeenranta, Finland: Lappeenranta University of Technology , 2017, Vol. II, p. 1125-1132Conference paper (Refereed)
    Abstract [en]

    ARD from historical mining sites in Sweden is a major source for trace elements to surface waters. In order to be able to treat a large portion of these sites cost effective reclamation methods is necessary. Incineration ashes were used in leaching tests to study their effect on a highly weathered mining waste in order to neutralize acidity and immobilize trace elements. This study shows that ashes can be used to increase pH and decrease trace element mobility from oxidized mining waste. Increased leaching of Cl, Mo and Sb, however, needs to be considered for waste fuel ashes before use.