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  • 1.
    Aaboen, Lise
    et al.
    Norwegian University of Science and Technology, Department of Industrial Economics and Technology Management, Trondheim, Norway.
    Laage-Hellman, Jens
    Chalmers University of Technology, Department of Technology Management and Economics, Gothenburg, Sweden.
    Lind, Frida
    Chalmers University of Technology, Department of Technology Management and Economics, Gothenburg, Sweden.
    Öberg, Christina
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Shih, Tommy
    Lund University, Department of Business Administration, Lund, Sweden.
    Exploring the roles of university spin-offs in business networks2016Ingår i: Industrial Marketing Management, ISSN 0019-8501, E-ISSN 1873-2062, Vol. 59, s. 157-166Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    This paper identifies different university spin-off (USO) roles related to resource interaction among business parties. It does so by mapping how USOs become part of business networks in terms of their roles relative to other parties. The theoretical frame of reference focuses on roles and resource interaction based on an industrial network approach to business markets. The empirical research is based onfive cases of USOs representing a variety in terms of technology, degree of newness, sector, and area of application. As a result of the analysis, three different roles are identified: the USO as resource mediator, resource re-combiner and resource renewer. These roles reflect how USOs adapt resources to, or require changes among, business parties' resources. The paper also discusses the main resource interfaces associated with the three roles and related challenges. The paper contributes to previous research through illustrating USOs' roles relative to business parties from a resource interaction point of view, and by pointing to the establishment of new companies in business networks as a way of implementing innovation. Finally, the paper discusses the managerial implications of the research in terms of the USO's need to understand which role to take and how to develop it.

  • 2. AAboen, Lise
    et al.
    Laage-Hellman, Jens
    Chalmers University of technology, Gothenburg, Sweden.
    Lind, Frida
    Chalmers University of technology, Gothenburg, Sweden.
    Öberg, Christina
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Shih, Tommy
    Lund University, Lund, Sweden.
    University spin-offs and their roles in business networks2014Ingår i: IMP Conference, 2014Konferensbidrag (Refereegranskat)
  • 3.
    Abbas, Asad
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Faiz, Ali
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Reasons for the failure of government IT projects in Pakistan: A Contemporary Study2013Självständigt arbete på avancerad nivå (masterexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
  • 4.
    Abbas, Asad
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Faiz, Ali
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Usefulness of Digital and Traditional Library in Higher Education2012Självständigt arbete på avancerad nivå (magisterexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
  • 5.
    Abdelnour, Samer
    et al.
    Erasmus University, Rotterdam, The Netherlands.
    Hasselbladh, Hans
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Kallinikos, Jannis
    London School of Economics and Political Science, UK.
    Agency and Instituions in Organization Studies2017Ingår i: Organization Studies, ISSN 0170-8406, E-ISSN 1741-3044, Vol. 38, nr 12, s. 1775-1792Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Agency and institutions are essential concepts within institutional theory. In this Perspectives issue, we draw on a select group of Organization Studies articles to provide an overview of the topic of agency and institutions. We first consider different ways of defining agency and institutions and examine their implications for institutional theory. We then analyse the relationship of actors and institutions through four lenses – the wilful actor, collective intentionality, patchwork institutions and modular individuals. Our analysis leads us to dissociate agency from individuals and view it as a capacity or quality that stems from resources, rights and obligations tied to the roles and social positions actors occupy. Roles and social positions are institutionally engineered. It is social actors qua occupants of roles and positions (not individuals) that enter the social ‘stage’ and exercise agency.

  • 6.
    Abdulhomeed, Bashar
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Contemporary Research on e-democracy: A Literature Review2013Självständigt arbete på avancerad nivå (masterexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
  • 7.
    Abrahamsson, Axel
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Nordén, Fredrik
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Värdering till verkligt värde - En kvantitativ studie om företags efterlevnad av upplysningskraven i IFRS 132018Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
  • 8.
    Abrahamsson, Axel
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Nordén, Fredrik
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Odenå, Oscar
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Efterlevnadsgraden av IAS 36 p. 134 - Utifrån ett isomorfistiskt perspektiv2016Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
  • 9.
    Abrahamsson, Catrin
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Atterfors, Sofia
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Erlandsson, Sofia
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Från ideell förening till hybridorganisation - En kvalitativ studie i elitidrottsföreningar2015Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
  • 10.
    Abrahamsson, Catrin
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Blixt, Elizabeth
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Lean - effektivitet och minskning av slöseri till priset av stress?: En kvalitativ studie av teamworks och kommunikationens påverkan på anställdas upplevda stress2016Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
  • 11.
    Abrahamsson, Gun
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Englund, Hans
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Gerdin, Jonas
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    On the (re)construction of numbers and operational reality: A study of face-to-face interactions2016Ingår i: Qualitative Research in Accounting & Management/Emerald, ISSN 1176-6093, E-ISSN 1758-7654, Vol. 13, nr 2, s. 159-188Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Purpose: This paper aims to examine the mobilization of management accounting (MA) numbers and metrics in social interactions. The purpose is to develop a model of how and why managers perceive and mobilize (new) MA numbers/metrics in a changing way over time in situated face-to-face interactions.

    Design/methodology/approach: An observation-based qualitative field study of a change project in a large manufacturing company is used as the basis for our analysis.

    Findings: The empirical study shows that MA numbers and metrics are essential when semi-distant managers strive to solve problems and achieve radical improvement targets, but that the ways in which existing and new metrics are perceived and mobilized during face-to-face interactions change over time. The study provides both a detailed account of the emergent nature of the transformation process and a number of mechanisms as to why managers (inter-)act the way they do to produce such change.

    Originality/value: The paper problematizes the generally held view that MA numbers and metrics primarily work as a structuring device in face-to-face interactions, and also, how the processes are constituted through which MA is transformed into such a structuring device. The paper also adds new insights to our understandings of why managers (inter-)act the way they do to produce MA change.

  • 12.
    Abrahamsson, Gun
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Englund, Hans
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Gerdin, Jonas
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Organizational identity and management accounting change2011Ingår i: Accounting, Auditing & Accountability Journal, ISSN 1368-0668, E-ISSN 1758-4205, Vol. 24, nr 3, s. 345-376Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Purpose – This paper aims to examine how and why management accounting practices are linked to an organization's identity and identity discrepancies.

    Design/methodology/approach – A qualitative field study of a one-year change project in a large manufacturing company is used as the basis for the analysis.

    Findings – The empirical study reveals how discrepancies between organizational members' perceived identity and their construed external (and desired future) image both influence and are influenced by emergent accounting practices. Empirical evidence suggests such a reciprocal relationship between accounting and identity, since accounting practices are an important means of (de)legitimizing an organization's current self-perception.

    Research limitations/implications – The uncovered reciprocal relationship between management accounting practices and organizational identity (discrepancies) have implications for a broader literature, including the works on how different forms of control interact as a “control package” and the discourse on potential sources of organizational identity change.

    Originality/value – Although it has previously been suggested that management accounting may be an important means for, as well as an outcome of, processes of identity (re)constructions in organizations, this study suggests a more complex interplay than has previously been noted in the literature. Specifically, it was found that organizational identity may for a considerable time work as a highly influential and largely unquestioned categorical imperative, signifying the boundaries of appropriate organizational action. At times, however, accounting practices may spark (re)constructions of identity discrepancies through: providing identity-inconsistent evidence; and using (new) measures in a “feed-forward” manner to explore possible ways to close such perceived discrepancies.

  • 13.
    Abrahamsson, Gun
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Gerdin, Jonas
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Helin, Sven
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Management accounting and organizational change - an institutional perspective2005Konferensbidrag (Refereegranskat)
  • 14.
    Abrahamsson, Gun
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Helin, SvenÖrebro universitet, Handelshögskolan vid Örebro Universitet.
    Accounting and Continuous Improvements: some notes on how accounting can support or hinder establishment of Continuous Improvements1998Proceedings (redaktörskap) (Refereegranskat)
  • 15.
    Abrahamsson, Gun
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Helin, Sven
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Continuous Improvement-work under Ambiguity: the role of Management Accounting Control2000Konferensbidrag (Refereegranskat)
  • 16.
    Abrahamsson, Gun
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Helin, Sven
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Ekonomistyrning och förbättringsarbete: En fallstudie om hur ekonomistyrning kan stödja respektive hindra förbättringsarbete2000Licentiatavhandling, monografi (Övrigt vetenskapligt)
  • 17.
    Abrahamsson, Gun
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Helin, Sven
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Hur kan ekonomistyrningen stödja eller hindra ett kontinuerligt och systematiskt förändringsarbete?1999Konferensbidrag (Refereegranskat)
  • 18.
    Abrahamsson, Gun
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Helin, Sven
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    'It's the singer not the song'- how Management Accounting Influence Problem Solving Activities on Shop Floor Level: a Case Study2001Konferensbidrag (Refereegranskat)
  • 19.
    Abrahamsson, Gun
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Johansson, Tobias
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Ekonomiska ansvarsenheter2013Ingår i: Perspektiv på ekonomistyrning / [ed] Erik Jannesson, Matti Skoog, Stockholm: Liber, 2013, 1, s. 14-35Kapitel i bok, del av antologi (Övrigt vetenskapligt)
  • 20.
    Abrahamsson, Nathalie
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Altun, Sultan
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Kundlojalitet En studie om hur en fysisk telefonbutik kan bevara och stärka kundlojalitet 2016Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
  • 21.
    Abrahamsson, Nathalie
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Celik, Evelin
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Mati, Mikaela
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Motstånd och bristande engagemang vid en organisationsförändring2017Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
  • 22.
    Abramsson, Alexander
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Happonen, Anna
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Malmsten, Dennis
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Aktieindexobligationer: En studie om struktur och prissättning av produkter på den svenska marknaden2013Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
  • 23.
    Acar, Augin
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Törmänen, Anton
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Rosenberg, Daniel
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Legitimitetssökande i en kontroversiell bransch En studie av tre spelbolags hållbarhetsredovisningar2016Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
  • 24.
    Ackfjärd, Rickard
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Karlsson, Mattias
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Förslag till ett nytt ramverk för utvärdering och utveckling av ARP-poisoning-skydd2016Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
  • 25.
    Adams, Richard
    et al.
    University of Exeter Business School, Exeter, UK.
    Alexander, Allen
    University of Exeter Business School, Exeter, UK.
    Öberg, Christina
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Innovation management capabilities for start-ups and spin-offs: A literature review2014Konferensbidrag (Refereegranskat)
  • 26.
    Adawi, Ali
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Björnius, Emil
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    "Den enes bröd, den andres spam" En studie om studenters uppfattning om och mottaglighet till e-postreklam2014Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
  • 27.
    Adawi, Ali
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Oguz, Muzaffer
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    CSR-relaterade aktiviteter i kontroversiella branscher - Tobaksbolaget Swedish Match legitimitetsförsök mellan 1999-2014.2016Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
  • 28.
    Adlund, Ardalan
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Afzali, Shafi
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Rasheed, Pirman
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Motivation En fallstudie kring Systembolaget En fallstudie om motivation och hur det uppfattas av cheferna respektive de anställda.2014Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
  • 29.
    Adolfsson, Per
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Ivic, Marijo
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Ett försök till att statistiskt modellera matchutfall för fotbollens division 1 för herrar i Sverige2012Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
  • 30.
    Af Robson, Siri
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Irhem, Sophie
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Ekologiska aktier - en studie om bolags anslutning till FTSE4Good2016Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
  • 31.
    AF Robson, Siri
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Ronell, Kristina
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Generation Y i Restaurangbranschen: Attityder på Arbetsplatsen2014Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
  • 32.
    AGALOMBA, CHRISTINE AFANDI
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Factors contributing to failure of egovernment projects in developing countries: a literature review2012Självständigt arbete på avancerad nivå (masterexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
  • 33.
    Agebro, Jessica
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Bergetoft, Fanny
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Sponsring av individuella elitidrottare ur ett företagsperspektiv2018Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
  • 34.
    Agewall, Cecilia
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Sommarström, Julina
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Legitimitet som en nyckel till acceptans: En studie om legitimitetsskapande2014Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
  • 35.
    Aghanavesi, Somayeh
    et al.
    School of Technology and Business Studies, Computer Engineering, Dalarna University, Falun, Sweden.
    Memedi, Mevludin
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Dougherty, Mark
    School of Technology and Business Studies, Computer Engineering, Dalarna University, Falun, Sweden.
    Nyholm, Dag
    Department of Neuroscience, Neurology, Uppsala University, Sweden.
    Westin, Jerker
    School of Technology and Business Studies, Computer Engineering, Dalarna University, Falun, Sweden.
    Verification of a Method for Measuring Parkinson’s Disease Related Temporal Irregularity in Spiral Drawings2017Ingår i: Sensors, ISSN 1424-8220, E-ISSN 1424-8220, Vol. 17, nr 10, artikel-id 2341Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Parkinson’s disease (PD) is a progressive movement disorder caused by the death of dopamine-producing cells in the midbrain. There is a need for frequent symptom assessment, since the treatment needs to be individualized as the disease progresses. The aim of this paper was to verify and further investigate the clinimetric properties of an entropy-based method for measuring PD-related upper limb temporal irregularities during spiral drawing tasks. More specifically, properties of a temporal irregularity score (TIS) for patients at different stages of PD, and medication time points were investigated. Nineteen PD patients and 22 healthy controls performed repeated spiral drawing tasks on a smartphone. Patients performed the tests before a single levodopa dose and at specific time intervals after the dose was given. Three movement disorder specialists rated videos of the patients based on the unified PD rating scale (UPDRS) and the Dyskinesia scale. Differences in mean TIS between the groups of patients and healthy subjects were assessed. Test-retest reliability of the TIS was measured. The ability of TIS to detect changes from baseline (before medication) to later time points was investigated. Correlations between TIS and clinical rating scores were assessed. The mean TIS was significantly different between healthy subjects and patients in advanced groups (p-value = 0.02). Test-retest reliability of TIS was good with Intra-class Correlation Coefficient of 0.81. When assessing changes in relation to treatment, TIS contained some information to capture changes from Off to On and wearing off effects. However, the correlations between TIS and clinical scores (UPDRS and Dyskinesia) were weak. TIS was able to differentiate spiral drawings drawn by patients in an advanced stage from those drawn by healthy subjects, and TIS had good test-retest reliability. TIS was somewhat responsive to single-dose levodopa treatment. Since TIS is an upper limb high-frequency-based measure, it cannot be detected during clinical assessment.

  • 36.
    Aghanavesi, Somayeh
    et al.
    Computer Engineering, School of Technology and Business Studies, Dalarna University, Borlänge, Sweden.
    Memedi, Mevludin
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Westin, Jerker
    Computer Engineering, School of Technology and Business Studies, Dalarna University, Borlänge, Sweden.
    Measuring temporal irregularity in spiral drawings of patients with Parkinson’s disease2017Ingår i: Abstracts of the 21st International Congress of Parkinson's Disease and Movement Disorders, John Wiley & Sons, 2017, Vol. 32, s. s252-s252, artikel-id 654Konferensbidrag (Övrig (populärvetenskap, debatt, mm))
    Abstract [en]

    Objective: The aim of this work is to evaluate clinimetric properties of a method for measuring Parkinson’s disease (PD) upper limb temporal irregularities during spiral drawing tasks.

    Background: Basal ganglia fluctuations of PD patients are associated with motor symptoms and relating them to objective sensor-based measures may facilitate the assessment of temporal irregularities, which could be difficult to be assessed visually. The present study investigated the upper limb temporal irregularity of patients at different stages of PD and medication time points.

    Methods: Nineteen PD patients and 22 healthy controls performed repeated spiral drawing tasks on a smartphone. Patients performed the tests before a single levodopa dose and at specific time intervals after the dose was given. Three movement disorder specialists rated the videos of patients' performance according to six items of UPDRS-III, dyskinesia (Dys), and Treatment Response Scale (TRS). A temporal irregularity score (TIS) was developed using approximate entropy (ApEn) method. Differences in mean TIS between two groups of patients and healthy subjects, and also across four subject groups: early, intermediate, advanced patients and, healthy subjects were assessed. The relative ability of TIS to detect changes from baseline (no medication) to later time points when patients were on medication was assessed. Correlations between TIS and clinical rating scales were assessed by Pearson correlation coefficients and test-retest reliability of TIS was measured by intra-class correlation coefficients (ICC).

    Results: The mean TIS was significantly different between healthy subjects and patients (P<0.0001). When assessing the changes in relation to treatment, clinical-based scores (TRS and Dys) had better responsiveness than TIS. However, the TIS was able to capture changes from Off to On, and the wearing off effects. Correlations between TIS and clinical scales were low indicating poor validity. Test-retest reliability correlation coefficient of the mean TIS was good (ICC=0.67).

    Conclusions: Our study found that TIS was able to differentiate spiral drawings drawn by patients from those drawn by healthy subjects. In addition, TIS could capture changes throughout the levodopa cycle.TIS was weakly correlated to clinical ratings indicating that TIS measures high frequency upper limb temporal irregularities that could be difficult to be detected during clinical observations.

  • 37.
    Aghanavesi, Somayeh
    et al.
    Computer Engineering, School of Technology and Business Studies, Dalarna University, Sweden.
    Nyholm, Dag
    Dept. of Neuroscience, Neurology, Uppsala University, Sweden.
    Senek, Marina
    Dept. of Neuroscience, Neurology, Uppsala University, Sweden.
    Bergquist, Filip
    Dept. of Pharmacology, University of Gothenburg, Sweden.
    Memedi, Mevludin
    Örebro universitet, Handelshögskolan vid Örebro Universitet. Computer Engineering, School of Technology and Business Studies, Dalarna University, Sweden.
    A smartphone-based system to quantify dexterity in Parkinson's disease patients2017Ingår i: Informatics in Medicine Unlocked, ISSN 2352-9148Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Objectives

    The aim of this paper is to investigate whether a smartphone-based system can be used to quantify dexterity in Parkinson's disease (PD). More specifically, the aim was to develop data-driven methods to quantify and characterize dexterity in PD.

    Methods

    Nineteen advanced PD patients and 22 healthy controls participated in a clinical trial in Uppsala, Sweden. The subjects were asked to perform tapping and spiral drawing tests using a smartphone. Patients performed the tests before, and at pre-specified time points after they received 150% of their usual levodopa morning dose. Patients were video recorded and their motor symptoms were assessed by three movement disorder specialists using three Unified PD Rating Scale (UPDRS) motor items from part III, the dyskinesia scoring and the treatment response scale (TRS). The raw tapping and spiral data were processed and analyzed with time series analysis techniques to extract 37 spatiotemporal features. For each of the five scales, separate machine learning models were built and tested by using principal components of the features as predictors and mean ratings of the three specialists as target variables.

    Results

    There were weak to moderate correlations between smartphone-based scores and mean ratings of UPDRS item #23 (0.52; finger tapping), UPDRS #25 (0.47; rapid alternating movements of hands), UPDRS #31 (0.57; body bradykinesia and hypokinesia), sum of the three UPDRS items (0.46), dyskinesia (0.64), and TRS (0.59). When assessing the test-retest reliability of the scores it was found that, in general, the clinical scores had better test-retest reliability than the smartphone-based scores. Only the smartphone-based predicted scores on the TRS and dyskinesia scales had good repeatability with intra-class correlation coefficients of 0.51 and 0.84, respectively. Clinician-based scores had higher effect sizes than smartphone-based scores indicating a better responsiveness in detecting changes in relation to treatment interventions. However, the first principal component of the 37 features was able to capture changes throughout the levodopa cycle and had trends similar to the clinical TRS and dyskinesia scales. Smartphone-based scores differed significantly between patients and healthy controls.

    Conclusions

    Quantifying PD motor symptoms via instrumented, dexterity tests employed in a smartphone is feasible and data from such tests can also be used for measuring treatment-related changes in patients.

  • 38.
    Agneson, Henry
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Lundberg, Sara
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Von Bothmer, Henrik
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Hållbarhetsredovisning i svenska företag - En branschspecifik studie2016Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
  • 39.
    Agélii Genlott, Annika
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Grönlund, Åke
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Att lära sig läsa och skriva - i nutid och för framtid2014Ingår i: Interaktiva medier och lärandemiljöer / [ed] Elza Dunkels; Simon Lindgren, Malmö: Gleerups Utbildning AB, 2014, 1, s. 155-166Kapitel i bok, del av antologi (Refereegranskat)
  • 40.
    Agélii Genlott, Annika
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Grönlund, Åke
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Closing the gaps: Improving literacy and mathematics by ict-enhanced collaboration2016Ingår i: Computers and education, ISSN 0360-1315, E-ISSN 1873-782X, Vol. 99, s. 68-80Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Literacy and mathematics are necessary skills that for different reasons unfortunately not everybody acquires sufficiently. In OECD countries there is also a gender gap; boys lag behind girls in literacy but often outperform girls in mathematics (OECD, 2012). ICT (Information and communication technologies) may contribute useful tools to address both these problems but in order to effectively create better educational conditions there is yet a need to develop effective methods that combine ICT with key factors for learning. This research contributes to this by measuring effects of the “Write to Learn” (WTL) method. WTL lets children from 1st grade use several ICT tools to write texts and subsequently discuss and refine them together with classmates and teachers using digital real-time formative feedback and assessment. The central learning factor addressed, in mathematics as well as in literacy, is the written communication allowing the learners to interact with peers and teachers. WTL draws on methods from socio-cultural theory, including continuous social interaction and written real-time formative feedback among peers, using shared electronic forums for collaboration, thereby providing social meaning and increased learning of literacy and mathematics, among both boys and girls.

    The study uses quantitative methods and two control groups, one using traditional method (no ICT) and one using technology individually (without integrated social interaction and formative feedback), to compare results from 502 students in grade 3 national tests in mathematics and literacy. WTL yields by far best results; higher average score both in literacy and mathematics, smaller gender gap, and significantly better results for the under-achievers. The ITU method performs worst, which shows that ICT use must be well integrated into the pedagogy to be useful.

  • 41.
    Ahdrian, Micaela
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Nilsson, Annika
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Marknadskanalsystemets evolution på den svenska klädmarknaden 1991-2012: En dominant design-analys2013Självständigt arbete på avancerad nivå (magisterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
  • 42.
    Ahlberg, Annéa
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Andersson, Sarah
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Intentioner till hållbart konsumentbeteende: Med fokus på hållbara fonder2015Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
  • 43.
    Ahlberg, Joakim
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Analysis of discrete multi-unit, common value auctions: a study of three sealed-bid mechanismsManuskript (preprint) (Övrigt vetenskapligt)
    Abstract [en]

    This paper proposes a discrete bidding model for both quantities and pricing. It has a two-unit demand environment where subjects bid for contracts with an unknown redemption value, common to all bidders. Prior to bidding, the bidders receive private signals of information on the (common) value. The value and the signals are drawn from a known discrete affiliated joint distribution. The relevant task for the paper is to compare the equilibrium strategies and the seller’s revenue of three auction formats. We find that, of the three auctionformats below with two players, the discriminatory auction always gives the largest revenue to the seller; both the uniform and the Vickrey auction have zero revenue equilibrium strategies that put them further down in the revenue ranking. In equilibrium, bidders bid the same amount on both items in the discriminatory auction; a phenomenon not noted in either of the other auction formats.

  • 44.
    Ahlberg, Joakim
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Multi-unit common value auctions: a laboratory experiment with three sealed-bid mechansimsManuskript (preprint) (Övrigt vetenskapligt)
    Abstract [en]

    This study addresses a discrete common value environment with independent (one-dimensional) private signals, where the seller offers two identical units and the buyers have (flat) demand for both. Each session is conducted with2, 3 or 4 buyers. Three auction formats are used: the discriminatory, uniformand Vickrey auctions which are all subjected to a variation in the number of bidders and to repeating bid rounds on each subject. The main findings are that there are no significant differences between the uniform and the discriminatory auction in collecting revenue, while the Vickrey auction comes out as inferior. More bidders in the auction result in a greater revenue and level out the performance across the mechanisms. Demand reduction is visible in the experiment, but it is not as prominent as anticipated. Moreover, subjects come closer to equilibrium play over time. Finally, the winner’s curse is less severe than what is reported for inexperienced bidders in other studies.

  • 45.
    Ahlberg, Joakim
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Multi-unit common value auctions: an experimental comparison between the static and the dynamic uniform auctionManuskript (preprint) (Övrigt vetenskapligt)
    Abstract [en]

    It is still an open question whether the dynamic or the static format should be used in multi-unit settings, in a uniform price auction. The present study conducts an economic experiment in a common value environment, where it is found that it is more a question of whether the auctioneer wants to facilitate price discovery, and thereby lessen the otherwise pervasive overbidding, or if only the revenue is important. The experiment in the present paper provides evidence that the static format gives a significantly greater revenue than the dynamic auction, in both small and large group sizes. But a higher revenue comes at a cost; half of the auctions in the static format yield negative profits to the bidders, the winner’s curse is more severely widespread in the static auction, and only a minority of the bidders use the equilibrium bidding strategy.

  • 46.
    Ahlberg, Joakim
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Multi-unit common value auctions: theory and experiments2012Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
    Abstract [en]

    Research on auctions that involve more than one identical item for sale was,almost non-existing in the 90’s, but has since then been getting increasing attention. External incentives for this research have come from the US spectrum, sales, the European 3G mobile-phone auctions,  and Internet auctions. The policy relevance and the huge amount of money involved in many of them have helped the theory and experimental research advance. But in auctions where values are equal across bidders, common value auctions, that is, when the value depends on some outside parameter, equal to all bidders, the research is still embryonic.

    This thesis contributes to the topic with three studies. The first uses a Bayesian game to model a simple multi-unit common value auction, the task being to compare equilibrium strategies and the seller’s revenue from three auction formats; the discriminatory, the uniform and the Vickrey auction. The second study conducts an economic laboratory experiment on basis of the first study. The third study comprises an experiment on the multi-unit common value uniform auction and compares the dynamic and the static environments of this format.

    The most salient result in both experiments is that subjects overbid. They are victims of the winner’s curse and bid above the expected value, thus earning a negative profit. There is some learning, but most bidders continue to earn a negative profit also in later rounds. The competitive effect when participating in an auction seems to be stronger than the rationality concerns. In the first experiment, subjects in the Vickrey auction do somewhat better in small groups than subjects in the other auction types and, in the second experiment, subjects in the dynamic auction format perform much better than subjects in the static auction format; but still, they overbid.

    Due to this overbidding, the theoretical (but not the behavioral) prediction that the dynamic auction should render more revenue than the static fails inthe second experiment. Nonetheless, the higher revenue of the static auction comes at a cost; half of the auctions yield negative profits to the bidders, and the winner’s curse is more severely widespread in this format. Besides, only a minority of the bidders use the equilibrium bidding strategy.The bottom line is that the choice between the open and sealed-bid formats may be more important than the choice of price mechanism, especially in common value settings.

  • 47. Ahlquist, Martin
    et al.
    Borglund, Tommy
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Medierna och etiken: ansvar i ett nytt medielandskap2017Bok (Övrigt vetenskapligt)
  • 48.
    Ahlqvist, Fanny Viktoria
    et al.
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Besic, Mersiha
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Sultan, Filli Elyas
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Belöningssystemens inverkan på arbetsmotivationen -En fallstudie av åtta anställdas uppfattningar inom två olika yrkeskategorier i Thule group2016Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
  • 49.
    Ahlsson, Anders
    et al.
    Örebro universitet, Institutionen för hälsovetenskap och medicin. Department of Cardiothoracic Surgery and Anesthesiology, Örebro University Hospital, Örebro, Sweden.
    Bodin, Lennart
    Örebro universitet, Handelshögskolan vid Örebro Universitet. Department of Statistics and Epidemiology, Örebro University Hospital, Örebro, Sweden.
    Fengsrud, Espen
    Örebro universitet, Institutionen för hälsovetenskap och medicin. Department of Cardiology, Örebro University Hospital, Örebro, Sweden.
    Englund, Anders
    Örebro universitet, Hälsoakademin. Department of Cardiology, Örebro University Hospital, Örebro, Sweden.
    Patients with postoperative atrial fibrillation have a doubled cardiovascular mortality2009Ingår i: Scandinavian cardiovascular journal : SCJ, ISSN 1651-2006, Vol. 43, nr 5, s. 330-336Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    OBJECTIVES: To investigate the impact of postoperative AF on late mortality and cause of death in CABG patients.

    DESIGN: All CABG patients without preoperative AF surgically treated between January 1, 1997 and June 30, 2000 were included (N = 1419). Altogether, 419 patients (29.5%) developed postoperative AF. After a median follow-up of 8.0 years, survival data were obtained, causes of death were compared and Cox proportional hazard analysis was used to determine predictors of late mortality.

    RESULTS: The total mortality was 140 deaths/419 patients (33.4%) in postoperative AF patients and 191 deaths/1 000 patients (19.1%) in patients without AF. Death due to cerebral ischemia (2.6% vs. 0.5%), myocardial infarction (7.4% vs. 3.0%), sudden death (2.6% vs. 0.9%), and heart failure (6.7% vs. 2.7%) was more common among postoperative AF patients. Postoperative AF was an age-independent risk indicator for late mortality with a hazard ratio (HR) of 1.56 (95% confidence interval 1.23-1.98).

    CONCLUSIONS: Postoperative AF is an age-independent risk factor for late mortality in CABG patients, explained by an increased risk of cardiovascular death.

  • 50.
    Ahlén, Jonathan
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Hur empiriskt relevant är Taylor Rule idag?: En jämförelse av Sverige och USA.2017Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
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