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  • Disputas: 2020-02-28 10:00 Örebro universitet, Campus USÖ, hörsal C2, Örebro
    Ehn, Mattias
    Örebro universitet, Institutionen för hälsovetenskaper.
    Life Strategies, Work and Health in People with Usher Syndrome2020Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    Introduction: People with Usher syndrome (USH) have an inherited disorder causing congenital deafness or hearing loss combined with progressive vision loss and, in some cases, balance problems. Previous research has shown that people with USH have poor physical and psychological health. Research has, however, demonstrated that there are in-group health differences that have not yet been explored and that there is a lack of studies on life strategies as well as health in relation to working life.

    Aim: The aim was to explore the relationship between work and health in people with USH1 and 2 and to explore the experiences of life strategies in people with USH 2.

    Methods: A quantitative and a qualitative explorative design was employed comprising two cross-sectional studies of the relationship between work and health in people with USH2 (n=67) and USH1 (n=47). The third study, of life strategies, comprised focus group interviews with people with USH2a (n=14) analyzed by content analysis. The fourth study explored the lived experiences of working life by interviewing people with USH2 (n=7) using an interpretative phenomenological approach.

    Results: Study 1 and 2 demonstrated significant differences in health between working and nonworking people. Nonworking people showed significantly poorer health. In study 3, a variety of strategies to prevent and resolve challenges in life, as well as to comfort oneself was identified. The lived experiences of working life in people with USH2 (study 4) disclosed feelings of satisfaction, striving towards a work life balance. Work also disclosed feelings of limitations and uncertainty about the future.

    Conclusion: The results, which are discussed in relation to the Meikirsh model of health, demonstrated a complexity. Individual life strategies, psychological flexibility and environmental aspects, such as social determinants have to be considered to receive a comprehensive picture of the relationship between work and health in people with USH. This thesis provides new insights into the health of people with USH.

    Delarbeid
    1. The relationship between work and health in persons with Usher syndrome type 2
    Åpne denne publikasjonen i ny fane eller vindu >>The relationship between work and health in persons with Usher syndrome type 2
    2016 (engelsk)Inngår i: Journal of Visual Impairment & Blindness, ISSN 0145-482X, E-ISSN 1559-1476, Vol. 110, nr 4, s. 233-244Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    Introduction: Persons with deafblindness may have additional physical and psychological health problems. In this study we have focused on health from a work-life perspective in persons with Usher syndrome type 2 (USH2), a disorder with sensorineural hearing loss and retinitis pigmentosa. The aim of this study was to investigate the relationship between work and disability pension and physical and psychological health in persons with USH2.

    Methods: Participants were recruited from the Swedish Usher database. Eighty-four persons (aged 18 to 65 years) received a health-related questionnaire and 67 (36 women and 31 men) agreed to participate. The participants formed two groups (working group, n = 34; disability pension group, n = 33). A Swedish Health on Equal Terms questionnaire comprising questions on psychological and physical health, living conditions, work activity, and social relationships was used. A chi-square test of significance was used with a significance level of p < 0.05.

    Results: The two groups did not differ in terms of age, gender, degree of hearing loss, visual acuity, or visual field loss. The working group had statistically significant better health compared to the disability pension group in areas such as being overweight, handling problems, concentration, feeling unhappy, depressive symptoms, and feelings of worthlessness. Suicidal thoughts and attempts were significantly more common in the disability pension group.

    Discussion: Persons with USH2 generally reported very poor physical and psychological health, with significant differences between persons who were working and those who were not. This study highlights the need for early rehabilitation, vocational training, and opportunities to access the labor market. Implications for practitioners: It is important that persons with USH2 receive vocational support from an early age and that professionals in the field of rehabilitation always include work activity as a key element of interventions.

    sted, utgiver, år, opplag, sider
    New York, USA: American Foundation for the Blind, 2016
    HSV kategori
    Identifikatorer
    urn:nbn:se:oru:diva-51754 (URN)000384897800003 ()
    Forskningsfinansiär
    Swedish Research Council
    Merknad

    Funding Agency:

    Örebro University

    Tilgjengelig fra: 2016-08-23 Laget: 2016-08-23 Sist oppdatert: 2020-02-04bibliografisk kontrollert
    2. Health, work, social trust, and financial situation in persons with Usher syndrome type 1
    Åpne denne publikasjonen i ny fane eller vindu >>Health, work, social trust, and financial situation in persons with Usher syndrome type 1
    Vise andre…
    2018 (engelsk)Inngår i: Work: A journal of Prevention, Assessment and rehabilitation, ISSN 1051-9815, E-ISSN 1875-9270, Vol. 60, nr 2, s. 209-220Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    BACKGROUND: Research has demonstrated that persons with Usher syndrome type 1 (USH1) have significantly poorer physical and psychological health compared to a reference group.

    PURPOSE: To explore the relation between work, health, social trust, and financial situation in USH1 compared to a reference group.

    MATERIAL: Sixty-six persons (18-65 y) from the Swedish Usher database received a questionnaire and 47 were included, 23 working and 24 non-working. The reference group comprised 3,049 working and 198 non-working persons.

    METHODS: The Swedish Health on Equal Terms questionnaire was used and statistical analysis with multiple logistic regression was conducted.

    RESULTS: The USH1 non-work group had a higher Odds ratio (95% CI) in poor psychological and physical health, social trust, and financial situation compared to the USH1 work group and reference groups. Age, gender, hearing, and vision impairment did not explain the differences. The relation between the USH1 work and non-work groups showed the same pattern as the reference groups, but the magnitude of problems was significantly higher.

    CONCLUSIONS: Both disability and unemployment increased the risk of poor health, social trust and financial situation in persons with USH1, but having an employment seemed to counteract the risks related to disability.

    sted, utgiver, år, opplag, sider
    IOS Press, 2018
    Emneord
    Employment, working life, health, psychological health, dual sensory loss, deafblindness
    HSV kategori
    Identifikatorer
    urn:nbn:se:oru:diva-68163 (URN)10.3233/WOR-182731 (DOI)000436889900006 ()29865098 (PubMedID)2-s2.0-85049496022 (Scopus ID)
    Forskningsfinansiär
    Swedish Research Council
    Merknad

    Funding Agency:

    Örebro University

    Tilgjengelig fra: 2018-07-25 Laget: 2018-07-25 Sist oppdatert: 2020-02-04bibliografisk kontrollert
    3. Life strategies of people with deafblindness due to Usher syndrome type 2a-a qualitative study
    Åpne denne publikasjonen i ny fane eller vindu >>Life strategies of people with deafblindness due to Usher syndrome type 2a-a qualitative study
    2019 (engelsk)Inngår i: International Journal of Qualitative Studies on Health and Well-being, ISSN 1748-2623, E-ISSN 1748-2631, Vol. 14, nr 1, artikkel-id 1656790Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    Purpose: To explore life strategies in people with Usher syndrome type 2a.

    Background: There are no studies on life strategies in people with Usher syndrome. People with deafblindness are often described in terms of poor health and low quality of life, or as being vulnerable. From a clinical point of view, it is of importance to balance this picture, with an increased knowledge of life strategies.

    Methods: The study had a qualitative explorative design. Fourteen people aged 20-64 years (4 women, 10 men) with USH2a in Sweden participated in focus group interviews, which were transcribed and analysed by qualitative content analysis.

    Results: The content analysis resulted in seven categories; remaining active, using devices, using support, sharing knowledge, appreciating the present, maintaining a positive image and alleviating emotional pain. Two sub-themes: resolve or prevent challenges and comforting oneself was abstracted forming a theme "being at the helm".

    Conclusion: The findings show that people with USH2a have a variety of life strategies that can be interpreted as highlighting different aspects of psychological flexibility in a life adjustment process. The study demonstrates that people with USH2a manage in many ways, and metaphorically, by "taking the helm", they strive to actively navigate towards their own chosen values.

    sted, utgiver, år, opplag, sider
    Taylor & Francis, 2019
    Emneord
    Deafblindness, focus groups, life strategies, psychological flexibility, qualitative content analysis, Usher syndrome type 2
    HSV kategori
    Identifikatorer
    urn:nbn:se:oru:diva-76565 (URN)10.1080/17482631.2019.1656790 (DOI)000483845400001 ()31470768 (PubMedID)2-s2.0-85071653423 (Scopus ID)
    Forskningsfinansiär
    Swedish Research Council
    Merknad

    Funding Agency:

    Swedish Institute for Disability Research, Örebro University

    Tilgjengelig fra: 2019-09-20 Laget: 2019-09-20 Sist oppdatert: 2020-02-04bibliografisk kontrollert
    4. Experiences of work and health in people with Usher Syndrome type 2 — a qualitative study
    Åpne denne publikasjonen i ny fane eller vindu >>Experiences of work and health in people with Usher Syndrome type 2 — a qualitative study
    (engelsk)Manuskript (preprint) (Annet vitenskapelig)
    HSV kategori
    Identifikatorer
    urn:nbn:se:oru:diva-79756 (URN)
    Tilgjengelig fra: 2020-02-04 Laget: 2020-02-04 Sist oppdatert: 2020-02-04bibliografisk kontrollert
  • Gidehag, Anton Nyrenström
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    Understanding Firm Behavior: The Role of Recruitments and Institutional Reforms2020Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    The topic of this thesis is firm behavior and how it is shaped by institutional changes and firms’ recruitment decisions.

    The first essay studies how the recruitment decisions made by small and medium-sized enterprises (SMEs) affect their subsequent productivity development. Previous studies have shown that being able to recruit employees with complementary skills is associated with skill improvement among incumbent personnel, suggesting that new recruits promote productivity through knowledge spillovers. Using matched employer-employee data, we find that recruiting personnel from large multinational firms can be instrumental for the performance of SMEs.

    In the second essay, we evaluate the labor market effects of the 2007 Swedish youth payroll reform. This reform generated considerable labor cost savings for firms, related to their pre-reform number of young employees. We study the effects of these savings on firms’ subsequent employment growth and wage development. Our findings suggest that a total of 18,100 jobs were created over the period 2006-2008 and that the savings were partially used to increase the total wages for incumbent employees.

    The third essay utilizes the 2007 Swedish youth payroll reform to analyze whether general labor cost reductions enhance labor market opportunities for non-western immigrants. In contrast to targeted and time-limited wage subsidies for immigrants, which have frequently been used in the past, these savings were not tied to a specific group or to a certain time period. A strong and positive link between the amount of firms’ labor cost savings and the employment of first-generation non-western immigrants is found.

    The fourth essay evaluates the efficiency of a staff register reform introduced within the Swedish restaurant and hairdresser industries in 2007. The aim of this reform was to prevent firms from deliberately understating their wage payments and, thereby, evading taxes. We estimate the effect of the staff register reform on wages per employee and find wage increases of 2.17-10.2 percent per incumbent employee at restaurant firms during the four years following the introduction of the reform. Through a revenue-cost comparison, we compare the estimated gain in tax revenues to the total costs borne by firms and the tax authority. Our findings imply that the total costs exceed the tax revenues, suggesting that this reform is unlikely to be economically justified.

    Delarbeid
    1. Recruiting for Small Business Growth: Micro-Level Evidence
    Åpne denne publikasjonen i ny fane eller vindu >>Recruiting for Small Business Growth: Micro-Level Evidence
    2017 (engelsk)Inngår i: International Reveiw of Entrepreneurship, ISSN 2009-2822, Vol. 15, nr 2, s. 151-174, artikkel-id 1554Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    We examine the link between new employees in leading positions and subsequent productivity in small- and medium-sized enterprises (SMEs). Managers and professionals are likely to possess important tacit knowledge. They are also in a position to influence the employing firm. Exploiting rich and comprehensive panel data for Sweden in the 2001-2010 period and employing semi-parametric and quasi-experimental estimation techniques, we find that newly recruited professionals have a positive and statistically significant impact on the productivity of the hiring SME. For newly recruited managers there is no general link to the productivity of the hiring SME. We also find that professionals with experience from international firms and enterprise groups contribute the most to total factor productivity. Overall, the findings suggest the importance of mobility of key personnel for productivity-enhancing knowledge spillovers to SMEs.

    sted, utgiver, år, opplag, sider
    Senate Hall Ltd, 2017
    Emneord
    recruitment, knowledge spillovers, firm growth, productivity, SME
    HSV kategori
    Identifikatorer
    urn:nbn:se:oru:diva-59316 (URN)000406063300002 ()
    Merknad

    Funding Agencies:

    Swedish Agency for Growth Policy Analysis  

    Jan Wallander and Tom Hedelius Research Foundation  

    Tilgjengelig fra: 2017-08-24 Laget: 2017-08-24 Sist oppdatert: 2020-01-21bibliografisk kontrollert
    2. How do firms respond to reduced labor costs? Evidence from the 2007 Swedish payroll tax reform
    Åpne denne publikasjonen i ny fane eller vindu >>How do firms respond to reduced labor costs? Evidence from the 2007 Swedish payroll tax reform
    (engelsk)Manuskript (preprint) (Annet vitenskapelig)
    HSV kategori
    Identifikatorer
    urn:nbn:se:oru:diva-79273 (URN)
    Tilgjengelig fra: 2020-01-21 Laget: 2020-01-21 Sist oppdatert: 2020-01-21bibliografisk kontrollert
    3. Firms’ labor cost savings and recruitment of non-western immigrants: The unintended effect of a payroll tax reform
    Åpne denne publikasjonen i ny fane eller vindu >>Firms’ labor cost savings and recruitment of non-western immigrants: The unintended effect of a payroll tax reform
    (engelsk)Manuskript (preprint) (Annet vitenskapelig)
    HSV kategori
    Identifikatorer
    urn:nbn:se:oru:diva-79274 (URN)
    Tilgjengelig fra: 2020-01-21 Laget: 2020-01-21 Sist oppdatert: 2020-01-21bibliografisk kontrollert
    4. Compulsory staff registers as a way of increasing firms’ wage reporting: A revenue-cost analysis
    Åpne denne publikasjonen i ny fane eller vindu >>Compulsory staff registers as a way of increasing firms’ wage reporting: A revenue-cost analysis
    (engelsk)Manuskript (preprint) (Annet vitenskapelig)
    HSV kategori
    Identifikatorer
    urn:nbn:se:oru:diva-79275 (URN)
    Tilgjengelig fra: 2020-01-21 Laget: 2020-01-21 Sist oppdatert: 2020-01-21bibliografisk kontrollert
  • Joelson, Anders
    Örebro universitet, Institutionen för medicinska vetenskaper.
    High-grade spondylolisthesis in young patients: Long-term results of in situ fusion2020Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    The purpose of this long-term follow-up of 38 of 40 consecutive patients was to evaluate the results of uninstrumented in situ fusion for high-grade isthmic spondylolisthesis three decades after surgery. The mean age at surgery was 14 (range 9-24) years. The first of four studies evaluated clinical outcome, function, work status, and health-related quality of life (HRQoL) after in situ fusion in relation to age-matched Swedish population data. The second study evaluated effects on sagittal balance after in situ fusion. The third study evaluated adjacent segment disk degeneration after in situ fusion. The fourth study evaluated self-imageand HRQoL after in situ fusion in relation to healthy controls.

    The main findings were that (1) young patients fused in situ for highgrade isthmic spondylolisthesis have long-term HRQoL similar to the general Swedish population and controls matched for age and gender, (2) signs of non-compensated sagittal imbalance were observed only ina few individuals whereas compensated sagittal balance was the norm, (3) there was no correlation between any radiographic sagittal balance parameter and HRQoL outcome, (4) there was only a minor reduction inadjacent segment disk height which had no impact on HRQoL outcome, and (5) the only patient reported outcome measure indicating a detrimental effect at long-term follow-up was self-assessed trunk appearance which was slightly negatively affected.

    Delarbeid
    1. Normal Health-Related Quality of Life and Ability to Work Twenty-nine Years After in Situ Arthrodesis for High-Grade Isthmic Spondylolisthesis
    Åpne denne publikasjonen i ny fane eller vindu >>Normal Health-Related Quality of Life and Ability to Work Twenty-nine Years After in Situ Arthrodesis for High-Grade Isthmic Spondylolisthesis
    2014 (engelsk)Inngår i: Journal of Bone and Joint Surgery. American volume, ISSN 0021-9355, E-ISSN 1535-1386, Vol. 96, nr 12, artikkel-id e100Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    BACKGROUND: The purpose of this mixed prospective and retrospective case series was to evaluate the long-term health-related quality of life and physical disability after in situ arthrodesis for high-grade isthmic spondylolisthesis.

    METHODS: Thirty-five of forty consecutive patients who had in situ spinal arthrodesis for high-grade isthmic spondylolisthesis at a mean age of fifteen years (range, nine to twenty-five years) completed validated questionnaires (Short Form-36 [SF-36], EuroQol-5 Dimensions [EQ-5D], Zung depression scale, Oswestry disability index [ODI], Million score, and back and leg pain visual analog scale [VAS]) and underwent physical examination twenty-nine years (range, twenty-three to thirty-five years) after surgery. The mean age at the time of follow-up was forty-three years (range, thirty-seven to fifty-one years). In the absence of a formal control group, the scores on the SF-36 and EQ-5D were compared with Swedish normative data. The proportion of patients at work was compared with an age-matched control group derived from official statistics of Sweden. The Million score at the long-term follow-up was compared with the corresponding results at the mid-term follow-up of the same patients at a mean age of twenty-two years.

    RESULTS: The scores on the SF-36 and EQ-5D were similar to the scores of the general Swedish population. The mean Zung depression scale score was 30 (range, 20 to 52), the mean ODI score was 10 (range, 0 to 34), the mean back pain VAS score was 13 (range, 0 to 72), and the mean leg pain VAS score was 9 (range, 0 to 60). The Million score averaged 28 (range, 0 to 109) and was slightly worsened compared with the score of 19 (range, 0 to 94) at the mid-term follow-up (p = 0.034). The proportion of patients at work was the same as that for the age-matched general Swedish population.

    CONCLUSIONS: Our study shows good outcomes in health-related quality of life, disability, pain, and ability to work at up to twenty-nine years after in situ lumbar spine arthrodesis for high-grade isthmic spondylolisthesis.

    LEVEL OF EVIDENCE: Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.

    sted, utgiver, år, opplag, sider
    Stanford University Press, 2014
    HSV kategori
    Identifikatorer
    urn:nbn:se:oru:diva-71914 (URN)10.2106/JBJS.M.00064 (DOI)000343798400003 ()24951743 (PubMedID)2-s2.0-84903448099 (Scopus ID)
    Tilgjengelig fra: 2019-01-29 Laget: 2019-01-29 Sist oppdatert: 2020-01-15bibliografisk kontrollert
    2. Sagittal Balance and Health-Related Quality of Life Three Decades After in Situ Arthrodesis for High-Grade Isthmic Spondylolisthesis
    Åpne denne publikasjonen i ny fane eller vindu >>Sagittal Balance and Health-Related Quality of Life Three Decades After in Situ Arthrodesis for High-Grade Isthmic Spondylolisthesis
    Vise andre…
    2018 (engelsk)Inngår i: Journal of Bone and Joint Surgery. American volume, ISSN 0021-9355, E-ISSN 1535-1386, Vol. 100, nr 16, s. 1357-1365Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    BACKGROUND: This case series of consecutive patients evaluated sagittal balance and health-related quality of life (HRQoL) 3 decades after in situ arthrodesis for high-grade isthmic spondylolisthesis.

    METHODS: Global sagittal balance, pelvic parameters, and compensatory mechanisms were evaluated on standing lateral radiographs of the spine and pelvis for 28 of 39 consecutive patients, 28 to 41 years after in situ arthrodesis for high-grade L5 to S1 spondylolisthesis. The mean age at surgery was 14 years (range, 9 to 24 years), and the mean age at the time of follow-up was 48 years (range, 39 to 59 years). A subset of the radiographic parameters was compared with the corresponding data from an 8-year follow-up examination of the same patients. HRQoL was evaluated with the Scoliosis Research Society (SRS)-22r questionnaire.

    RESULTS: We found that 3 of the 28 patients had a global sagittal imbalance (T1 spinopelvic inclination of >0°). Signs of compensatory mechanisms, such as reduced thoracic kyphosis and pelvic retroversion, were frequent. There was a significant decrease in sacral slope compared with 8-year follow-up data (p = 0.01). The median SRS-22r subscore was on the same level as Swedish normative data. We found no association between radiographic parameters and SRS-22r outcome.

    CONCLUSIONS: Three decades after in situ arthrodesis for high-grade spondylolisthesis, radiographic signs of noncompensated sagittal imbalance were observed in only a few individuals. The patients had normal SRS-22r scores. There was no association between any radiographic parameter and SRS-22r outcome. The findings are relevant in the controversial discussion on whether to perform a reduction procedure to treat high-grade spondylolisthesis.

    LEVEL OF EVIDENCE: Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.

    sted, utgiver, år, opplag, sider
    Stanford University Press, 2018
    HSV kategori
    Identifikatorer
    urn:nbn:se:oru:diva-68504 (URN)10.2106/JBJS.17.01415 (DOI)000441556200006 ()30106816 (PubMedID)2-s2.0-85056496721 (Scopus ID)
    Tilgjengelig fra: 2018-08-17 Laget: 2018-08-17 Sist oppdatert: 2020-01-15bibliografisk kontrollert
    3. Adjacent segment disk degeneration three decades after fusion without attempted reduction for high-grade isthmic spondylolisthesis
    Åpne denne publikasjonen i ny fane eller vindu >>Adjacent segment disk degeneration three decades after fusion without attempted reduction for high-grade isthmic spondylolisthesis
    Vise andre…
    2020 (engelsk)Inngår i: Spine deformity, ISSN 2212-134XArtikkel i tidsskrift (Fagfellevurdert) Epub ahead of print
    Abstract [en]

    STUDY DESIGN: Observational study.

    OBJECTIVES: To evaluate adjacent segment disk degeneration (ASD) after fusion without attempted reduction at a young age for high-grade isthmic spondylolisthesis. The clinical relevance of ASD remains unclear. Previous studies have shown that spinal fusion is associated with increased ASD but without influence on clinical outcome. Since high-grade spondylolisthesis is a severe kyphotic deformity, one could hypothesize that fusion without attempted reduction in young patients leads to accelerated adjacent segment disk degeneration in adult life.

    METHODS: Anterior and posterior disk heights were evaluated on supine radiographs of the spine 8 years and 29 years after fusion without attempted reduction for high-grade spondylolisthesis and also on standing radiographs 8 years and 33 years after surgery. Pelvic parameters were evaluated on standing radiographs obtained 33 years after surgery. Health-related quality of life was evaluated with the Scoliosis Research Society (SRS)-22r questionnaire.

    RESULTS: One segment above fusion the anterior disk height significantly decreased on standing radiographs. Two segments above the fusion, the anterior disk height significantly decreased on supine as well as on standing radiographs. The largest reduction was found two segments above the fusion where the disk height was reduced from 33 to 28% of anterior vertebral height between the measurements at mean 8 years and mean 33 years after surgery. There were no statistically significant decreases in posterior disk heights in any measurement. The disk height showed a moderate negative correlation to PT. There was no correlation between disk height reduction and SRS-22r outcome.

    CONCLUSIONS: In our long-term follow-up of fusion without attempted reduction for high-grade spondylolisthesis in young patients, we found only a minor but statistically significant reduction in adjacent segment disk height which had no apparent impact on clinical outcome.

    LEVEL OF EVIDENCE: Level IV.

    sted, utgiver, år, opplag, sider
    Springer, 2020
    Emneord
    Adjacent segment disk degeneration, Disk height, Fusion without attempted reduction, SRS-22, Spondylolisthesis
    HSV kategori
    Identifikatorer
    urn:nbn:se:oru:diva-80118 (URN)10.1007/s43390-020-00085-6 (DOI)32065380 (PubMedID)
    Tilgjengelig fra: 2020-02-21 Laget: 2020-02-21 Sist oppdatert: 2020-02-21bibliografisk kontrollert
    4. Self-Image and Health-Related Quality of Life Three Decades After Fusion In Situ for High-Grade Isthmic Spondylolisthesis
    Åpne denne publikasjonen i ny fane eller vindu >>Self-Image and Health-Related Quality of Life Three Decades After Fusion In Situ for High-Grade Isthmic Spondylolisthesis
    Vise andre…
    2019 (engelsk)Inngår i: Spine deformity, ISSN 2212-134X, Vol. 7, nr 2, s. 293-297Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    STUDY DESIGN: Observational study.

    OBJECTIVES: To evaluate self-image after in situ fusion for high-grade isthmic spondylolisthesis.

    SUMMARY OF BACKGROUND DATA: Certain clinical findings such as short trunk or waistline skin folds are often seen in high-grade spondylolisthesis. Since treatment with spinal fusion in situ does not address appearance, self-image and also health-related quality of life might be negatively affected in the short-term as well as the long-term perspective. This observational study evaluated health-related quality of life outcome including self-image three decades after in situ fusion for high-grade isthmic spondylolisthesis in relation to healthy controls.

    METHODS: Thirty-eight of 39 consecutive patients, fused in situ for high-grade isthmic spondylolisthesis at a young age, completed the Scoliosis Research Society (SRS)-22r questionnaire 28-41 years after surgery. The results were compared with the results of an age- and gender-matched control group.

    RESULTS: We found that the SRS-22r self-image domain scores were statistically significantly lower in patients than in controls whereas the pain and mental health scores were similar in patients and controls. Also, the SRS-22r function domain scores were statistically significantly lower in patients but the difference in means was small. We found no correlation between severity of slip and SRS-22r outcome.

    CONCLUSIONS: In situ fusion for high-grade isthmic spondylolisthesis is a safe treatment option in the long term from a function and pain perspective, but the results of our study suggest that self-image is negatively affected long into adult life.

    LEVEL OF EVIDENCE: Level IV.

    sted, utgiver, år, opplag, sider
    Elsevier, 2019
    Emneord
    Fusion in situ, Health-related quality of life, SRS-22r, Self-image, Spondylolisthesis
    HSV kategori
    Identifikatorer
    urn:nbn:se:oru:diva-71913 (URN)10.1016/j.jspd.2018.08.012 (DOI)30660224 (PubMedID)2-s2.0-85054010418 (Scopus ID)
    Tilgjengelig fra: 2019-01-29 Laget: 2019-01-29 Sist oppdatert: 2020-02-21bibliografisk kontrollert
  • Lakew, Yuliya
    Örebro universitet, Institutionen för humaniora, utbildnings- och samhällsvetenskap.
    Matters of Public Connection: The role of mediated and interpersonal communication in young people's environmental engagement2020Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    What lies at the heart of environmental identity is the recognition of our interconnection with other people, living and not yet born, as well as nonhumans. To develop this sense of belonging, one needs to sustain public connection—a basic orientation to the public world where matters of shared concern are addressed. This connection is best sustained through communication— interpersonal and through media. The purpose of this dissertation is to explore the role that public connection, interpersonal and mediated, plays in young people’s everyday environmental engagement. This dissertation addresses the task by focusing on how this role varies among adolescents of different ages, genders, and existing environmental attitudes and how it changes over time. Drawing on Bruno Latour’s notion of “matters of concern” and Steven Vogel’s environmental philosophy, this inquiry challenges the common understanding of environmental awareness as an “extremely scientific view of the world,” expands the role of the media and interpersonal communication beyond the dissemination of scientific and ecological information and its effects on people, and taps into communication’s potential to sustain public connection. To provide a more integrated and dynamic perspective on adolescents’ communication flows, I employ longitudinal quantitative data and draw heavily on a toolbox of person-oriented methods. Methodologically, the main focus lies in identifying types of young people who function in a similar way and comparing how the relationship between public connection and environmental engagement unfolds for these different types of individuals. This dissertation consists of three empirical studies. The findings suggest that the more strongly connected to the public world young people are, the more engaged they are with environmental issues. Both interpersonal discussions and news media use assist in strengthening engaged adolescents’ belief that their contribution matters for tackling climate change. However, environmentally aware youth may project their own beliefs onto other people rather than being influenced by others’ beliefs. Disengaged youth do not sustain public connection, whether through conversation or through media. The role of mediated public connection varies among adolescents. Media may not be the most important channel for environmentally engaged youth to sustain their orientation to the public realm. This is indicated by the deep gender divide, in which girls are more concerned about the environment but consume significantly less news than boys. While news consumption does not seem to contribute to environmental disengagement, its relevance to pro-environmental practices weakens as teenagers mature. Early adolescence may be a critical window of opportunity to instill values of connectivity and form everyday habits that can help us achieve a more sustainable future.

    Delarbeid
    1. The Elusiveness of Communicative Influence: How the Key Socializers Influence Adolescents’ Environmental Engagement
    Åpne denne publikasjonen i ny fane eller vindu >>The Elusiveness of Communicative Influence: How the Key Socializers Influence Adolescents’ Environmental Engagement
    (engelsk)Manuskript (preprint) (Annet vitenskapelig)
    HSV kategori
    Identifikatorer
    urn:nbn:se:oru:diva-78906 (URN)
    Tilgjengelig fra: 2020-01-08 Laget: 2020-01-08 Sist oppdatert: 2020-01-08bibliografisk kontrollert
    2. Young, sceptical, and environmentally (dis)engaged: do news habits make a difference?
    Åpne denne publikasjonen i ny fane eller vindu >>Young, sceptical, and environmentally (dis)engaged: do news habits make a difference?
    2019 (engelsk)Inngår i: JCOM - Journal of Science Communication, ISSN 1824-2049, E-ISSN 1824-2049, Vol. 18, nr 4, artikkel-id A06Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    Research shows that news consumption plays a positive role in youths' environmental engagement. This article examines if this also holds true for sceptics by comparing Swedish climate change sceptics with non-sceptical youngsters in their early and late adolescence. We conceptualise news consumption as foci of public connection and orientation rather than a source of environmental information. The results show that in their early teens, heavy news consumers among both sceptics and non-sceptics are indeed more engaged with environmental issues than their less news-oriented peers. However, in late adolescence, sceptics among news consumers show very little environmental engagement.

    sted, utgiver, år, opplag, sider
    Sissa Medialab srl, 2019
    Emneord
    Environmental communication, Science and media
    HSV kategori
    Identifikatorer
    urn:nbn:se:oru:diva-76450 (URN)10.22323/2.18040206 (DOI)000482887300006 ()
    Tilgjengelig fra: 2019-09-16 Laget: 2019-09-16 Sist oppdatert: 2020-01-08bibliografisk kontrollert
    3. The gendered nature of adolescents’ environmental engagement: the role of interpersonal and mediated communication
    Åpne denne publikasjonen i ny fane eller vindu >>The gendered nature of adolescents’ environmental engagement: the role of interpersonal and mediated communication
    (engelsk)Manuskript (preprint) (Annet vitenskapelig)
    HSV kategori
    Identifikatorer
    urn:nbn:se:oru:diva-78907 (URN)
    Tilgjengelig fra: 2020-01-08 Laget: 2020-01-08 Sist oppdatert: 2020-01-08bibliografisk kontrollert
    4. Statistical Tales: Bringing in Reflexivity to Make Sense of Quantitative Data
    Åpne denne publikasjonen i ny fane eller vindu >>Statistical Tales: Bringing in Reflexivity to Make Sense of Quantitative Data
    2017 (engelsk)Inngår i: Present Scenarios of Media Production and Engagement / [ed] S. Tosoni, N. Carpentier, M. F. Murru, R. Kilborn, L. Kramp, R. Kunelius, A. McNicholas, T. Olsson, & P. Pruulmann-Vengerfeldt, Bremen: edition lumière , 2017, s. 225-238Kapittel i bok, del av antologi (Annet vitenskapelig)
    Abstract [en]

    Reflexivity has long become part of qualitative researcher’s arsenal for validity and credibility claims. However, very few quantitative researchers take the time to look back at their research process and ponder over the cost of deriving knowledge from statistical models – what has been omitted, polished, ignored or not taken into account. In this chapter I will try to bring reflexivity into my own quantitative research of young people’s environmental behavior by reflecting over what knowledge I have produced so far and why. Having worked with five waves of longitudinal data for two different age cohorts, I lived through several ‘existential’ crises failing to comprehend the stories that the data was telling me and failing to ‘impose’ my theoretical stories on it. It has challenged me to unravel conventions and granted assumptions of media studies as a discipline, reflect upon data’s temporal and spatial components, the subjective position of the researcher, the limits and the meaningfulness of generalizations, and the role of interpretations in statistical analysis. My personal research journey serves as a helpful background for a discussion of difficulties working with longitudinal quantitative data.

    sted, utgiver, år, opplag, sider
    Bremen: edition lumière, 2017
    Serie
    Researching and Teaching Communication Book Series, ISSN 1736-3918, E-ISSN 1736-4752 ; 12
    Emneord
    Reflexivity, Quantitative Methods, Statistics, Positivism
    HSV kategori
    Identifikatorer
    urn:nbn:se:oru:diva-78905 (URN)978-3-943245-72-1 (ISBN)
    Tilgjengelig fra: 2020-01-08 Laget: 2020-01-08 Sist oppdatert: 2020-01-08bibliografisk kontrollert
  • Baianstovu, Rúna Í
    et al.
    Örebro universitet, Institutionen för juridik, psykologi och socialt arbete.
    Strid, Sofia
    Örebro universitet, Institutionen för humaniora, utbildnings- och samhällsvetenskap.
    Särnstedt Gramnaes, Emmie
    Örebro universitet, Institutionen för humaniora, utbildnings- och samhällsvetenskap.
    Cinthio, Hanna
    Enelo, Jan-Magnus
    Örebro universitet, Institutionen för humaniora, utbildnings- och samhällsvetenskap.
    Heder och samhälle: Det hedersrelaterade våldets och förtryckets uttryck och samhällets utmaningar2019Rapport (Fagfellevurdert)
    Abstract [sv]

    Hedersrelaterat våld och förtryck är ett allvarligt problem som drabbar individer på

    ett flertal sätt. I den här boken beskrivs det hedersrelaterade våldets och förtryckets

    omfattning och karaktär samt hur hjälpinsatser ges och tas emot. Problematikens samhälleliga

    grogrund förstås och förklaras genom begreppen inneslutning och mobilitet.

    De två begreppen fångar det faktum att våldsutövning ökar i grupper där samspelet

    med andra grupper är lågt, medan social, ekonomisk och politisk mobilitet urholkar

    våldsnormerna och minskar våldet.

    Boken bygger på erfarenheter av utsatthet både hos unga och vuxna samt på professionellas

    erfarenheter av att möta och hjälpa utsatta. De utsatta är mellan 15 och 68 år

    gamla och lever i olika ojämlikhetssituationer. De professionella jobbar inom kvinnooch

    tjejjourer, skyddade boenden, större civilsamhällesorganisationer, föreningar,

    polis, skolhälsa, socialtjänst och ungdomsmottagningar. De är bland annat advokater,

    barnmorskor, fritidsledare, kuratorer, poliser, socialsekreterare och engagerade medmänniskor

    som verkar i Stockholm, Göteborg och Malmö.

    Boken är resultatet av den hittills mest omfattande studien av hedersrelaterat våld

    och förtryck i Sverige där 235 individer har intervjuats och 6002 besvarat en enkät.

    Bredden och djupet av kunskapsinhämtningen gör studien unik inom forskningsområdet.

    Därmed erbjuder den ett underlag för det offentligas och civilsamhällets arbete

    med hedersrelaterad problematik.

    Sammantaget visar studien att hedersrelaterat våld och förtryck är ett allvarligt problem

    och att samhället, bland annat genom socialpolitiken, bör ta ett förnyat ansvar

    på flera nivåer både akut och långsiktigt

  • Stål, Herman
    et al.
    Economics and Statistics, Umeå School of Business, Umeå University, Umeå, Sweden.
    Babri, Maira
    Economics and Statistics, Umeå School of Business, Umeå University, Umeå, Sweden.
    Educational interventions for sustainable innovation in small and medium sized enterprises2020Inngår i: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 243, artikkel-id 118554Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Sustainability innovation research suggests that when the managers of small and medium-sized enterprises(SMEs) perceive sustainability as strategic, they undertake sustainable innovation. Educationalinterventions are, in turn, suggested to foster such views among these managers. But in the interactionbetween educators and managers, power matters for how knowledge is conveyed and educational interventionsare understudied, especially when they are university-led. This article examines how actors’power affects the translation of knowledge between educators and SME managers. A conceptualframework combining translation and power-dependency theory is introduced and applied to the casestudy of a University-led competence development program offered to construction company managersin Sweden. The analysis reveals how imbalanced dependencies and power within interactions accumulatedover time and came to interfere with the program’s learning objectives. The study contributespractically by suggesting how mutual goals, time management, and relationship building can create abetter context for educator-SME interactions and SME sustainability. The scientific contribution lies inintroducing a new perspective on educational interventions for SMEs and providing a conceptualframework for future studies thereof.

  • Lebedinski, Ester
    Dapartment of Musicology, Uppsala University, Uppsala, Sweden.
    "Obtained by peculiar favour, & much difficulty of the singer": Vincenzo Albrici and the Function of Charles II’s Italian Ensemble at the English Restoration Court2018Inngår i: Journal of the Royal Musical Association, ISSN 0269-0403, E-ISSN 1471-6933, Vol. 143, nr 2, s. 325-359Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This article discusses the function of Vincenzo Albrici and Charles II's Italian ensemble at the English Restoration court. The article cites newly discovered archival evidence to suggest that Albrici arrived at the English court in 1664 to become the leader of an exclusive ensemble performing Italian chamber music. The employment of the Italian ensemble imitated Mazarin's patronage of Italian music at the French court, arguably to rehabilitate the recently restored Stuart dynasty in the eyes of Continental courts. The article suggests that the ensemble performed chamber music privately at court, and also occasionally appeared in the queen's Catholic chapel after 1666. The recruitment of Albrici and the Italian ensemble shows that the English court participated in Continental musical fashions after the Restoration, and illustrates the complex webs of cultural exchange in mid-seventeenth-century Europe.

  • Lindvall-Östling, Mattias
    et al.
    Örebro universitet, Institutionen för humaniora, utbildnings- och samhällsvetenskap.
    Deutschmann, Mats
    Steinvall, Anders
    Department of Language Studies, Umeå University, Umeå, Sweden.
    “Oh It Was a Woman! Had I Known I Would Have Reacted Otherwise!”: Developing Digital Methods to Switch Identity-Related Properties in Order to Reveal Linguistic Stereotyping2019Inngår i: Virtual Sites as Learning Spaces: Critical Issues on Languaging Research in Changing Eduscapes / [ed] Sangeeta Bagga-Gupta, Giulia Messina Dahlberg and Ylva Lindberg, England: Palgrave Macmillan, 2019, 1, s. 207-239Kapittel i bok, del av antologi (Fagfellevurdert)
    Abstract [en]

    This chapter describes the methodological processes involved in the project Raising Awareness using Virtual Experiencing (RAVE), funded by the Swedish Research council. The aim of the project is to develop experiential pedagogic approaches aimed at raising sociolinguistic language awareness about stereotyping and language. A key feature of the method consists of updated matched-guise techniques, whereby the same recording is digitally manipulated to alter the voice quality of a speaker to sound “male” or “female”, for example. These versions of the recording are then used as input stimuli for a response phase aimed at illustrating how we as listeners react differently to a person, and what is being said, depending on the perceived identity of the speaker. This chapter then illustrates how results are used as a starting point for discussions with respondents (student groups) on issues related to stereotyping and language, with the aim to raise awareness and self-reflection.

  • Hoang, Dinh-Cuong
    et al.
    Örebro universitet, Institutionen för naturvetenskap och teknik.
    Stoyanov, Todor
    Örebro universitet, Institutionen för naturvetenskap och teknik.
    Lilienthal, Achim J.
    Örebro universitet, Institutionen för naturvetenskap och teknik.
    Object-RPE: Dense 3D Reconstruction and Pose Estimation with Convolutional Neural Networks for Warehouse Robots2019Inngår i: 2019 European Conference on Mobile Robots, ECMR 2019: Proceedings, IEEE, 2019, artikkel-id 152970Konferansepaper (Fagfellevurdert)
    Abstract [en]

    We present a system for accurate 3D instance-aware semantic reconstruction and 6D pose estimation, using an RGB-D camera. Our framework couples convolutional neural networks (CNNs) and a state-of-the-art dense Simultaneous Localisation and Mapping (SLAM) system, ElasticFusion, to achieve both high-quality semantic reconstruction as well as robust 6D pose estimation for relevant objects. The method presented in this paper extends a high-quality instance-aware semantic 3D Mapping system from previous work [1] by adding a 6D object pose estimator. While the main trend in CNN-based 6D pose estimation has been to infer object's position and orientation from single views of the scene, our approach explores performing pose estimation from multiple viewpoints, under the conjecture that combining multiple predictions can improve the robustness of an object detection system. The resulting system is capable of producing high-quality object-aware semantic reconstructions of room-sized environments, as well as accurately detecting objects and their 6D poses. The developed method has been verified through experimental validation on the YCB-Video dataset and a newly collected warehouse object dataset. Experimental results confirmed that the proposed system achieves improvements over state-of-the-art methods in terms of surface reconstruction and object pose prediction. Our code and video are available at https://sites.google.com/view/object-rpe.

  • Du Rietz, Sabina
    Örebro universitet, Handelshögskolan vid Örebro Universitet.
    En cirkulär ekonomi: företagsekonomiskt tänkande bortom den linjära värdekedjan2019Inngår i: Organisation & Samhälle, ISSN 2001-9114, E-ISSN 2002-0287, Vol. 2, s. 38-43Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [sv]

    Öppnar cirkulär ekonomi möjligheter för förnyat hållbarhetstänkande och produktivitet inom planetens gränser?

  • de Miranda, Luis
    The University of Edinburgh, Edinburgh, United Kingdom.
    Life Is Strange and “Games Are Made”: A Philosophical Interpretation of a Multiple-Choice Existential Simulator With Copilot Sartre2018Inngår i: Games and Culture: A Journal of Interactive Media, ISSN 1555-4120, E-ISSN 1555-4139, Vol. 8, nr 1, s. 825-842Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The multiple-choice video game Life is Strange was described by its French developers as a metaphor for the inner conflicts experienced by a teenager in trying to become an adult. In psychological work with adolescents, there is a stark similarity between what they experience and some concepts of existentialist philosophy. Sartre’s script for the movie Les Jeux Sont Faits (literally “games are made”) uses the same narrative strategy as Life is Strange—the capacity for the main characters to travel back in time to change their own existence—in order to stimulate philosophical, ethical, and political thinking and also to effectively simulate existential “limit situations.” This article is a dialogue between Sartre’s views and Life is Strange in order to examine to what extent questions such as what is freedom? what is choice? what is autonomy and responsibility? can be interpreted anew in hybrid digital–human—“anthrobotic”—environments.

  • de Miranda, Luis
    et al.
    Örebro universitet, Institutionen för humaniora, utbildnings- och samhällsvetenskap.
    Chabal, Emile
    bHistory, The University of Edinburgh, UK.
    Big Data, Small Concepts: Histosophy as an Approach to Longue-Durée History2019Inngår i: Global l Intellectual History, ISSN 2380-1883Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In this essay, we sketch out a method, histosophy, which makes possible the study of intellectual history and conceptual genealogy both in depth and over long periods of time. Histosophy uses digital tools to survey ‘large issues within small compasses.’ A genealogy of signifiers, it considers metonymic parts of a problem in order to contribute precisely and coherently to a larger perspective. We outline the theoretical contours of our approach. We exemplify how it works in practice by looking at the signifier ‘esprit de corps’, the study of which is presented in detail in the histosophical book The Genealogy of Esprit de Corps(Edinburgh University Press, 2019). The phrase ‘esprit de corps’ has been widely used since the eighteenth century in different discourses (political, military, sociological, etc.), but it is sufficiently limited that its genealogy can be traced across centuries and nations with precision, coherence, clarity, and with the help of automated search engines. By contrast, related but bigger concepts like freedom, individualism or solidarity are part of dozens of disparate and fuzzy discourses, so often uttered that the analysis of modern uses is problematic. The histosophical methodology is applicable in six discrete stages, here outlined.

  • Karlsson-Tuula, Marie
    Handelshögskolan (from 2013), Karlstads universitet, Karlstad.
    Överskuldsättning för privatpersoner och företag2018Collection/Antologi (Annet vitenskapelig)
    Abstract [sv]

    Akademien för insolvensrätt på Handelshögskolan vid Karlstads universitet samlar kompetens från juridik, ekonomi och andra ämnen för att utveckla och stärka forskning, utbildning och samverkan kring ämnet insolvensrätt. Akademien för insolvensrätt har bildats för att öka fokus på insolvensrätt och förbättra förutsättningarna för tvärvetenskap mellan rättsvetenskap och företagsekonomi och andra ämnen.

     

    Akademien har inrättat en skriftserie som utkommer med två böcker om året med olika teman. Skriftseriens första bok har temat överskuldsättning. Många människor lever med skulder som de saknar förutsättningar att kunna betala tillbaka. Om fler kan få sina skulder sanerade innebär det en lättnad inte bara för de skuldsatta och deras familjer, utan även för borgenärerna och samhället i stort. Den 21–22 september 2017 hölls en två-dagars tvärvetenskaplig konferens om överskuldsättning där bl.a. ämnena juridik, ekonomi och socialt arbete medverkade. På konferensen behandlades flera teman; Konsumentskydd och kreditgivning i ett juridiskt perspektiv. Konsumentverkets arbete mot överskuldsättning. Kronofogdens förebyggande arbete med fokus på barn och unga. Överskuldsättning och jämlikhet i ett ekonomiskt perspektiv. Företagsrekonstruktion och lagarna om skuldsanering för privatpersoner och företagare samt avslutningsvis Skuldsatt och skamsen i ett socialt perspektiv. Boken består av två delar. I den första delen återfinns de föredrag som hölls på konferensen med därtill hörande Power-Points. Den andra delen är en antologi med artiklar om skuldsanering och företagsrekonstruktion som tidigare har publicerats i Insolvensrättslig Tidskrift.

  • Husu, Liisa
    Örebro universitet, Institutionen för humaniora, utbildnings- och samhällsvetenskap.
    Gender equality in Nordic academia: advances and challenges2019Inngår i: RODNA RAVNOPRAVNOST U VISOKOM OBRAZOVANJU: Koncepti, prakse i izazovi / [ed] Dragica Vujadinović and Zorana Antonijević, Novi Sad, Serbia: Akademska knjiga , 2019, s. 63-73Kapittel i bok, del av antologi (Fagfellevurdert)
    Abstract [en]

    The five Nordic countries – Denmark, Finland, Iceland, Norway, and Sweden – are considered high achievers in global comparisons of overall gender equality of society (World Economic Forum, 2017a). Political will in the region to advance gender equality in academia is high. Gender equality promotion in higher education, academia, and research has been on the national policy agendas for four decades, since the late 1970s and early 1980s, through various national level interventions and measures, especially so in Finland, Norway, and Sweden. Gender equality is addressed in the university legislation in Norway and Sweden, and in Finland the Gender Equality and Anti-Discrimination legislation especially gives educational institutions a duty to promote equality and prevent discrimination. Universities in Finland, Norway, and Sweden have for decades been legally obliged to engage in equality planning. These three countries also show the highest proportion of women on scientific boards in the European Union, approaching gender parity, and the highest proportion of women among university Vice-Chancellors in the EU. Despite this, unequal gendered structures in academic careers and gender segregation of disciplinary fields prevail. Taking the proportion of women among full professors as one indicator of gender equality in academia, the Nordic region does not excel in a European comparison, neither in the share of women in the professoriate, nor the pace of diminishing the gender gap among professors. This article interrogates the Nordic paradox of high overall gender equality in society, political will, and active policy regulation to advance gender equality in academia and science, on the one hand, and the unequal gendered structures in academic careers and inequalities in resource allocation, including research funding, on the other. Some differences and similarities between the five Nordic countries will be highlighted and discussed, along with historical developments, policy landscapes, and continuing resistances to advancement of gender equality, both within and outside academia.

  • Jonhed, Anna L
    et al.
    Örebro universitet, Institutionen för juridik, psykologi och socialt arbete.
    Glatz, Terese
    Örebro universitet, Institutionen för juridik, psykologi och socialt arbete.
    Utsatthet för våld inom familjen2019Inngår i: Barns och ungas utsatthet / [ed] B. Johansson & Å. Källström, Lund: Studentlitteratur AB, 2019, s. 21-46Kapittel i bok, del av antologi (Fagfellevurdert)
  • Andersson, Sören
    et al.
    Örebro universitet, Institutionen för medicinska vetenskaper. Folkhälsomyndigheten, Public Health Agency of Sweden.
    Strid, Åke
    Örebro universitet, Institutionen för naturvetenskap och teknik.
    CHIMERIC MOMP ANTIGEN2015Patent (Annet (populærvitenskap, debatt, mm))
  • Andersson, Sören
    et al.
    Örebro universitet, Institutionen för medicinska vetenskaper. Folkhälsomyndigheten, Public Health Agency of Sweden.
    Strid, Åke
    Örebro universitet, Institutionen för naturvetenskap och teknik.
    Chimeric MOMP antigen2014Patent (Annet (populærvitenskap, debatt, mm))
    Abstract [en]

    The present invention regards polypeptides capable of eliciting an immunological response that is protective against Chlamydia trachomatis. The polypeptide comprises a first amino acid sequence which has at least 90% homology with the amino acid sequence according to SEQ ID NO: 1 and a second amino acid sequence which has at least 90% homology with the amino acid sequence according to SEQ ID NO: 2. Furthermore, production of these polypeptides and pharmaceutical compositions comprising them are also provided.

  • Eriksson, Leif A.
    et al.
    Göteborgs universitet, Göteborg.
    Sirsjö, Allan
    Örebro universitet, Institutionen för medicinska vetenskaper.
    Strid, Åke
    Örebro universitet, Institutionen för naturvetenskap och teknik.
    Tetrazole derivatives as cytochrome p450 inhibitors2019Patent (Annet (populærvitenskap, debatt, mm))
    Abstract [en]

    According to the invention there is provided a compound of formula I, wherein Rand Rhave meanings given in the description, which compounds are useful in the treatment of skin disorders and other diseases.

  • Neugart, Susanne
    et al.
    Division of Quality and Sensory of Plant Products, University of Göttingen, Göttingen, Germany.
    Hideg, Éva
    bDepartment of Plant Biology, University of Pécs, Pécs, Hungary.
    Czégény, Gyula
    Department of Plant Biology, University of Pécs, Pécs, Hungary.
    Schreiner, Monika
    Department of Plant Quality and Food Security, Leibniz Institute of Vegetable and Ornamental Crops, Großbeeren, Germany.
    Strid, Åke
    Örebro universitet, Institutionen för naturvetenskap och teknik.
    Ultraviolet-B radiation exposure lowers the antioxidant capacity in the Arabidopsis thaliana pdx1.3-1mutant and leads to glucosinolate biosynthesis alteration in both wild type and mutant2020Inngår i: Photochemical and Photobiological Sciences, ISSN 1474-905X, E-ISSN 1474-9092, Vol. 19, s. 217-228Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Pyridoxine (vitamin B6) and its vitamers are used by living organisms both as enzymatic cofactors and as antioxidants. We used Arabidopsis pyridoxine biosynthesis mutant pdx1.3-1to study involvement of the PLP-synthase main polypeptide PDX1 in plant responses to ultraviolet radiation of two different qualities, one containing primarily UV-A (315-400 nm), the other containing both UV-A and UV-B (280-315 nm). The antioxidant capacity and the flavonoid and glucosinolate (GS) profiles were examined. As indicator of stress, F⁠v/F⁠mof photosystem II reaction centers was used. In pdx1.3-1, UV-A+B exposure led to a significant 5% decrease in F⁠v/F⁠mon the last day (day 15), indicating mild stress at this time point. Antioxidant capacity of Col-0 wildtype increased significantly (50-73%) after 1 and 3 days of UV-A+B. Instead, in pdx1.3-1, the antioxidant capacity significantly decreased by 44-52% over the same time period, proving the importance of a full complement of functional PDX1genes for detoxification of reactive oxygen species. There were no significant changes in flavonoid glycoside profile under any light condition. However, the GS profile was significantly altered, both with respect to Arabidopsis accession and exposure to UV. The difference in flavonoid and GS profiles reflect that the GS biosynthesis pathway contains at least one pyridoxine-dependent enzyme, whereas no such enzyme is used in flavonoid biosynthesis. Also, there was strong correlation between the antioxidant capacity and the content of some GS compounds. Our results show that vitamin B6vitamers, functioning both as antioxidants and co-factors, are of importance for physiological fitness of plants.

  • Bäckström, Åsa
    et al.
    Swedish School of Sport and Health Sciences, Sweden.
    Quennerstedt, Mikael
    Örebro universitet, Institutionen för hälsovetenskaper.
    Maivorsdotter, Ninitha
    School of Health and Education, University of Skövde, Sweden.
    Meckbach, Jane
    Swedish School of Sport and Health Sciences, Sweden.
    Routes and roots to knowing in Shaun White’s snowboarding road trip: A mycorrhizaic approach to multisensory emplaced learning in exergames2019Inngår i: Scandinavian Sport Studies Forum, ISSN 2000-088X, E-ISSN 2000-088X, Vol. 10, s. 251-278Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This article explores learning during game-play of a snowboarding video game intrigued by questions raised in the wake of the increasing mediatisation and digitisation of learning. Correspondingly, we answer to calls for more suitable metaphors for learning to cater for the entangled learning processes that changes related to the increase of digital media may infer. Using a short term sensory ethnography approach, we elaborate on the idea of multisensory emplaced learning and propose an organic metaphor – mycorrhiza – to both methodology and learning. Mycorrhiza refers to a symbiotic relationship between fungi and roots of plants in its environment where fungi are the visible effects of the mycorrhiza. The metaphor provides a way to start to unpack sensory, visual and embodied aspects of learning in the complexities of the digital age. By elaborating on the mycorrhizaic concepts fungus, soil, growth, mycelia and symbiosis we show three interrelated ways of moving through this game: (i) a social and cultural route, (ii) a competitive route, and (iii) an experiential route. With help of the metaphor we discern the symbiotic relations between what appeared in our empirical material as visual and other human and non-human aspects of emplacement.

  • Volgsten, Ulrik
    Örebro universitet, Musikhögskolan.
    Musikens medialisering och musikaliseringen av medier och vardagsliv i Sverige2019Collection/Antologi (Fagfellevurdert)
    Abstract [sv]

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

  • Westberg, Gustav
    Örebro universitet, Institutionen för humaniora, utbildnings- och samhällsvetenskap.
    Klädsam autenticitet: Om det äkta som resurs och vara2019Inngår i: Sakprosa, ISSN 1502-6000, E-ISSN 1891-5108, Vol. 11, nr 7, s. 1-34Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [sv]

    Den här artikeln handlar om hur föreställningar om ursprungsfolk rekontextualiseras i kommersiella sammanhang. Konkret undersöks hur ett svenskt jeansmärke marknadsför sina jeans som ’autentiska’ och ’samiska’. Artikeln syftar till att utforska autenticitet som diskursiv praktik och att diskutera hur förledet sak- gör det möjligt att inkludera sakprosatexter och andra semiotiska material i analysen av autenticitet. Studien bygger på socialsemiotisk teori och tillämpar proveniens och affordans som analytiska begrepp. Analysen visar hur bl.a. flerspråkighet, ikonografi, tygvikt och materialval realiserar ’samisk’ autenticitet såväl som en kontextspecifik ’global’ jeansautenticitet. Genom att visa hur föreställningar om autenticitet omlokaliseras och återuppfinns, bidrar artikeln till förståelse för den semiotiska process då ursprungsfolk i allmänhet och samer i synnerhet omdefinieras som ekonomisk resurs inom den nya, globala ekonomin.

     

  • Andershed, Anna-Karin
    et al.
    Örebro universitet, Institutionen för juridik, psykologi och socialt arbete.
    Andershed, Henrik
    Örebro universitet, Institutionen för juridik, psykologi och socialt arbete.
    Risk- och skyddsfaktorer förnormbrytande beteende bland unga: Att använda teori och forskning i praktiken2019Rapport (Fagfellevurdert)
  • Quennerstedt, Ann
    Örebro universitet, Institutionen för humaniora, utbildnings- och samhällsvetenskap.
    Language use in the teaching of human rights2019Inngår i: Cogent Education, E-ISSN 2331-186X, Vol. 6, nr 1, artikkel-id 1683932Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This research seeks to increase the knowledge about the role of language in the teaching of human rights. The specific interest is to examine how language use extends and specifies the human rights learning situation. Drawing on John Dewey’s arguments for two main constituents of an educative language use—the extension of vocabulary and rendering it more precise, observational data from ongoing human rights teaching in six Swedish classes in Years 2–3, 5 and 8 are analysed. The findings show six focal points towards which the language use in the teaching extends the students’ vocabulary and generic understanding of human rights, and three objectives for an increased preciseness in students’ language. The paper highlights differences between the age groups concerning the focal points and precision objectives, and points out potentials and strengths in the observed teaching, as well as aspects of problematic character to consider further.

  • Geidne, Susanna
    Örebro universitet, Institutionen för hälsovetenskaper.
    Organisering av ideellt arbete: En studie om hur det ideella arbetet organiseras i projektfinansierade av Arvsfonden 2016–20192019Rapport (Annet vitenskapelig)
    Abstract [sv]

    Engagemang i oavlönat ideellt arbete är ett globalt fenomen som historiskt sett skiljer sig åt mellanländer, både när det gäller hur engagemanget ser ut och hur många som engagerar sig. Sverige harlänge haft en stark civil sektor, och tillgången på ideella har stor betydelse för många organisationersöverlevnad – såväl nationella som internationella. Samtidigt talas det ofta om att det har blivitsvårare och svårare att få tag på ideella, men är det verkligen så? I Sverige visar undersökningar att andelen som gör ideella insatser är stabil och att det till och med går att se positiva trender.

    Så varför är den allmänna uppfattningen att det är svårare att få tag på ideella? En möjlig förklaring kan vara den trend som syns i både den svenska och internationella forskningen, nämligen attmänniskor är ideella på ett annat sätt numera. Tidigare var människor ofta engagerade i sammaorganisation under en längre tid. Nu gör de snarare gör kortare inhopp som ideella, till exempel som volontär i flera insatser drivna av olika organisationer.

    Den här trenden kommer att påverka hur vi människor organiserar vårt samhälleliga engagemang iframtiden. När lika många vill göra ideella uppdrag men på ett annat sätt, behöver vi även ändraorganiseringen av det ideella arbetet – en förändring som redan har börjat.Därför har den här studien undersökt hur det ideella arbetet organiseras i projekt som har fåttpengar från Arvsfonden under perioden 2016 till 2019. Resultatet baseras på enkätsvar från 181 projekt, ansökningar och rapporteringar från 20 projekt samt besök hos och intervjuer med projektledning och ideella i 4 projekt.

    Studiens resultat visar att hur man definierar och benämner de ideella verkar ha betydelse för vilka som är de ideella i ett visst projekt. Vilka de ideella är verkar också ha att göra med hur man är ideell.

    Olika typer av ideellt arbete görs av olika människor, som har skilda motiv och verkar på olika arenor. Det ideella arbetet betyder därmed olika saker för olika organisationer och människor. De ideella personernas arbetsuppgifter i projekten är lika skilda och varierade som projekten i sig. Personernaär också engagerade i olika grad: vissa är endast med i enskilda punktinsatser, medan andra ”gör allt” i projektet. De ideella uppdragen kan göras i sociala organisationer och idrottsorganisationer inomden civila sektorn, men även som en del av någons ordinarie tjänst inom offentlig eller privat sektor.

    Dessa skillnader mellan ideella har betydelse för exempelvis vilken utbildning de behöver, vad deönskar för uppskattning och hur de bör rekryteras. Organisationer kan till exempel använda olika strategier för rekrytering beroende på vilka de vill rekrytera och vilka uppgifter de ideella ska utföra.Vilka de ideella är har också betydelse för hur det ideella arbetet bör organiseras.

    I den här rapporten diskuteras hur organiseringen av ideella påverkas av relationen mellan anställda och ideella i en organisation, olika typer av organisationer och olika former av ideella. I slutet avrapporten presenteras också en modell för hur ideellt arbete skulle kunna organiseras för att bli merhållbart. Modellen innebär i korthet att projekt eller organisationer samverkar i organiseringen av ideellt arbete.

    Hur projekt organiserar ideellt arbete har stor betydelse för vilka spår projekten lämnar hos olika målgrupper, däribland de ideella själva. Det påverkar också projektens överlevnad. Arvsfonden kanhjälpa organisationer att planera sitt arbete genom att efterfråga tydligare beskrivningar och tankarom organiseringen av ideellt arbete. Det kan i sin tur öka möjligheterna för projekten att överleva även efter projekttidens slut.

  • Hort, Sofia
    Örebro universitet, Institutionen för humaniora, utbildnings- och samhällsvetenskap.
    Skrivprocesser på högskolan: Text, plats och materialitet i uppsatsskrivandet2020Doktoravhandling, monografi (Annet vitenskapelig)
    Abstract [en]

    The purpose of this study is to explore how students in a higher education context handle the writing of their final essay. Applying a sociomaterial approach, the study offers comprehensive case studies of students’ writing processes. The thesis attempts to show how student writers handle writing challenges through different technologies and at different places. It does so by implementing the Mobile Technologies Process Logs (MTPL)-method, wherein participating students take an active role to create and gather data on their own writing processes.

    The results show that some students’ textual work could be described in terms of being comprehensive, and hence handled through varied writing technologies at various writing places. These students write a lot of texts to move the writing process forward. Other writers take a more product-oriented view in their writing, and hence write through fewer technologies, at a few places, and with a wish to finish their final text product directly. Many of the students make explicit how they process the literature through writing texts. The knowledge production, the analysis, which is central to academic writing, seems however more implicit and difficult for the students to handle, specifically if having a product oriented view on writing. The results also show how students mobilize different textual actions to meet challenges that writing an (digital) essay implies. This work is clearly emplaced ,at diverse or at more homogenous writing places.

    It is significant to make textual strategies as well as the functions of writing technologies and place visible to all students. It seems vital at times where higher education, as well as the students entering this institution, are put in front of a raft of (new) challenges. At the same time as the idea of the bad student writer is prevailing, higher education institutions seem not to teach how an academic writing process could be managed in successful ways. This thesis contributes to this field of inquiry with results on how students’ writing processes can be characterized.

  • Hargrove, Andrew
    et al.
    Department of Sociology, Stony Brook University, USA.
    Qandeel, Mais
    Örebro universitet, Institutionen för juridik, psykologi och socialt arbete.
    Sommer, Jamie M.
    Department of Sociology, University of South Florida, USA.
    Global governance for climate justice: A cross-national analysis of CO2 emissions2019Inngår i: Global Transitions, ISSN 2589-7918, Vol. 1, s. 190-199Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Sustainable energy transitions are key to achieving climate justice for all. Carbon dioxide emissions’(CO2) unequal distribution globally is one of the many issues preventing climate justice. Efforts to reduceglobal CO2impacts are vital for environmental justice efforts and a future free from climate change is-sues. Researchers have long been interested in how the rise of global governance initiatives, such asmultilateral treaties, impact environmental outcomes across the world. However, little is known abouthow global governance concerning energy usage and technologies impacts CO2emissions across theworld. Using two-wayfixed effects regression analysis from 1996 to 2011, we test how 24 multilateralenvironmental treaties with an energy focus impact CO2emissions per capita, CO2emissions as a per-centage of gross domestic product, and total CO2emissions for 162 nations. The multilateral energytreaties were collected from Ecolex. This analysis assesses how the legitimacy of global contracts mayimpact actual decreases in CO2emissions, resulting in climate justice outcomes. Additionally, thisanalysis considers how factors of institutional state governance, including control of corruption, rule oflaw, political stability, government effectiveness, and regulatory quality moderate the impact of multi-lateral energy environmental treaties and CO2emissions. Wefind that stocks of environmental treatyratification are associated with decreases in all three types of CO2emissions. Renewable energy con-sumption, GDP per capita, and urban and total population are associated with increased CO2 emissions.We alsofind some support for the idea that treaties are associated with larger decreases in emissions innations with higher levels of state governance. Understanding how state accountability, transparency,and legitimacy factor into the effectiveness of multilateral environmental treaties on reducing CO2emissions is essential to combating climate change issues.

  • Varea, Valeria
    Örebro universitet, Institutionen för hälsovetenskaper.
    Embodying latinness in Australia through dance2019Inngår i: Revista Tempos e Espaços em Educação, ISSN 1983-6597, E-ISSN 2358-1425, Vol. 12, nr 31, s. 81-96Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Dance, as an embodied activity, is shaped by culture, and simultaneously shapes culture. Significantly, over the last few years there has been a worldwide boom in Latin dance, which is often considered an ‘exotic’ and ‘sexy’ activity. This paper explores experiences of teaching Latin dance as a service activity (extensión, in Spanish) by an academic in Australia, shaped by the theoretical ideas of public and body pedagogies. The reflections are presented under two broad themes: the potential of Latin dance as a service activity, and the processes of integrating and othering Latinness in Australia.

  • Johansson, Björn
    Örebro universitet, Institutionen för juridik, psykologi och socialt arbete.
    DROPPING OUT OF SCHOOL: a systematic and integrative researchreview on risk factors an interventions2019Rapport (Fagfellevurdert)
  • van Ooijen, Erik
    Örebro universitet, Institutionen för humaniora, utbildnings- och samhällsvetenskap.
    Making mythopoeic meaning out of plants2019Inngår i: Cogent Arts and Humanities, E-ISSN 2331-1983, Vol. 6, nr 1, artikkel-id 1687256Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The article discusses literary and scientific discourse in relation to plant cognition. I argue that one purpose of literature is to let humans make meaning out of their environment. My focus is not on literature as fiction, or any a priori faculty of counterfactual construction. Rather, I consider literature as the inspired response to external phenomena. In this aspect, literature springs from outside; and this it shares with scientific explanation. But where science lays bare the mechanical laws of the universe, literature operates with compelling narratives of individual wills. I further suggest that the literary mode is specifically suited for envisioning non-human life. Poetic thought is considered as a mode of human cognition that, by suspending the distance between human and world, allows us to think modes of non-human cognition. In literature, we are able to represent those affects we share with other forms of biological life. My focus is on two literary representations of plant life and the blending of life forms in stories where people turn into plants. I start by considering how a few botanists have taken the literary mode as a negative point of departure for their attempts to explain plant behavior. Then, I muster two theoretical accounts in order to read two such stories. Henri and Henriette Frankfort’s description of mythopoeic thought is used as the starting point for an interpretation of Ovid’s take on the myth of Echo and Narcissus; and Roger Caillois’ “comparative biology” for a reading of Johan Borgen’s short story “Kaprifolium”.

  • Tolgfors, Björn
    Örebro universitet, Institutionen för hälsovetenskaper. IHM.
    Promoting integration through physical education (?)2019Inngår i: Sport, Education and Society, ISSN 1357-3322, E-ISSN 1470-1243, s. 1-14Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    A common problem in contemporary western societies is segregation,which is also reflected in schools. The point of departure for this study is apolitical initiative in Sweden, where pupils are being transported by busfrom a suburb to different schools in the city with the aim of promotingintegration and improved performance results. The study focuses on theteaching practice of Physical Education (PE) at one of the schools where‘the bus for inclusion’ stops every morning. The research questionconcerns how ‘the political action’ of the bussing project is ‘acted upon’in the subject of PE. The purpose is to explore what becomes of thisparticular PE practice, in terms of rationalities encompassing a PEteacher’s pedagogical actions and the pupils’ ways of acting on them. Thedata, gathered through extensive fieldwork, including lesson observationsand interviews, is analysed from a governmentality perspective [Foucault,1978/1994. Governmentality. In Power (pp. 201–222). New York: The NewPress]. The findings highlight three underlying rationalities in regards tointegration, aiming at promoting intercultural encounters, collaborationand mutual respect. These rationalities, manifested through the PEteacher’s pedagogical actions, offer guidance for the pupil seen as ‘asubject seeking to construct himself or herself’ [Wieviorka 2014. A critiqueof integration. Identities, 21(6), 633–641, 636–637]. In case of compliance,the notion of ‘us and them’ is countered and a shared experience ofbelonging is achieved through teamwork and self-regulation. In case ofresistance, segregation is maintained in the school community as well asin society as a whole. This study does not contribute any incontestableevidence of social inclusion through PE [cf. Bailey, 2005. Evaluating therelationship between physical education, sport and social inclusion.Educational Review, 57(1), 71–90; Dagkas, 2018. Is social inclusion throughPE, sport and PA still a rhetoric? Evaluating the relationship betweenphysical education, sport and social inclusion. Educational Review, 70(1),67–74]. However, the findings indicate that ‘action upon action’ in aculturally heterogeneous PE practice makes a difference insofar asintegration is understood as a process of subjectivation [Wieviorka 2014.A critique of integration. Identities, 21(6), 633–641]. Depending on thedirection of the PE teacher’s guidance, the process might tend towardseither cultural assimilation or pluralistic integration [Grimminger, 2008.Promoting intercultural competence in the continuing education ofphysical education teachers. Sport-Integration-Europe, 310–320].

  • Ni, Junbei
    et al.
    Department of Horticulture, Zhejiang University, Hangzhou, Zhejiang, PR China; The Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, the Ministry of Agriculture of China, Hangzhou, Zhejiang, PR China.
    Zhao, Yuan
    Department of Horticulture, Zhejiang University, Hangzhou, Zhejiang, PR China; The Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, the Ministry of Agriculture of China, Hangzhou, Zhejiang, PR China.
    Tao, Ruiyan
    Department of Horticulture, Zhejiang University, Hangzhou, Zhejiang, PR China; The Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, the Ministry of Agriculture of China, Hangzhou, Zhejiang, PR China.
    Yin, Lei
    Department of Horticulture, Zhejiang University, Hangzhou, Zhejiang, PR China; The Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, the Ministry of Agriculture of China, Hangzhou, Zhejiang, PR China.
    Gao, Ling
    ACON Biotech (Hangzhou) Co., Ltd, Hangzhou, Zhejiang, China.
    Strid, Åke
    Örebro universitet, Institutionen för naturvetenskap och teknik.
    Qian, Minjie
    School of Science and Technology, Örebro University, Örebro, Sweden.
    Li, Juncai
    Liaoning Province Institute of Pomology, Xiongyue, Liaoning, PR China.
    Li, Yuanjun
    Yantai Academy of Agricultural Sciences, Yantai, Shandong, PR China.
    Shen, Jiaqi
    Department of Horticulture, Zhejiang University, Hangzhou, Zhejiang, PR China; The Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, the Ministry of Agriculture of China, Hangzhou, Zhejiang, PR China.
    Teng, Yuanwen
    Department of Horticulture, Zhejiang University, Hangzhou, Zhejiang, PR China; The Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, the Ministry of Agriculture of China, Hangzhou, Zhejiang, PR China.
    Bai, Songling
    Department of Horticulture, Zhejiang University, Hangzhou, Zhejiang, PR China; The Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, the Ministry of Agriculture of China, Hangzhou, Zhejiang, PR China.
    Ethylene mediates the branching of the jasmonate-induced flavonoid biosynthesis pathway by suppressing anthocyanin biosynthesis in red Chinese pear fruits2019Inngår i: Plant Biotechnology Journal, ISSN 1467-7644, E-ISSN 1467-7652Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Flavonoid accumulation in most fruitsis enhanced by ethylene and jasmonate. However, little is known about the hormone functions related to red pear fruit coloration or their combined effects and potential underlying mechanisms. Various treatments were used to investigate the flavonoid metabolite profile and pear transcriptome to verify the effects of ethylene and jasmonate on flavonoid biosynthesis in red pear fruits as well as the mechanism behind this. Ethylene inhibits anthocyanin biosynthesis in red Chinese pear fruits, whereas jasmonate increases anthocyanin and flavone/isoflavone biosyntheses. The branching of the jasmonate-induced flavonoid biosynthesis pathway is determined by ethylene. Co-expression network and Mfuzz analyses revealed 4,368 candidate transcripts. Additionally, ethylene suppresses PpMYB10 and PpMYB114 expression via TF repressors, ultimately decreasing anthocyanin biosynthesis. Jasmonate induces anthocyanin accumulation through transcriptional or post-translational regulation of TFs like MYB and bHLH in the absence of ethylene. However, jasmonate induces ethylene biosynthesis and the associated signaling pathway in pear, thereby decreasing anthocyanin production, increasing the availability of the precursors for flavone/isoflavone biosynthesis, and enhancing deep yellow fruit coloration. We herein present new phenotypes and fruit coloration regulatory patterns controlled by jasmonate and ethylene, and confirm that the regulation of fruit coloration is complex.

  • Alsarve, Daniel
    Örebro universitet, Institutionen för hälsovetenskaper.
    Is There a Need for a Violence Prevention Programme in Ice Hockey?2019Inngår i: Book of Abstracts / [ed] Breitbarth, Tim, Bodet, Guillaume, Fernández Luna, Álvaro, Burillo Naranjo, Pablo & Bielons, Gerardo, Seville: EASM , 2019, Vol. 1, s. 776-777Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Aim and Research Questions: Against a background of identified masculinity ideals and how they relate to norms of violence in Swedish ice hockey, the overall purpose of this paper is to identify preventive suggestions that can challenge violence-supportive masculinity ideals and norms. The specific research aim is to identify and discuss preventive measures from an individual (coach or player) perspective (i.e. a micro level), club or community perspective (a meso level) and a structural (e.g. rules) perspective (a macro level). The two research questions are: Which ideals have been appreciated in Swedish male ice hockey and what kinds of attitudes to violence in general can be identified? What, more specifically, can be considered as necessary to change in Swedish ice hockey in order to prevent violence and violent behaviour?

    Theoretical Background and Literature Review: By combining research on sport, masculinities (or gender), violence/aggression and prevention, a theoretical discussion is conducted about the link between masculinity and aggressiveness/violence in sport and how this affects and is associated with more general expressions of men’s violence in society and the adequacy of prevention. The point of departure is a ‘broad’ understanding of violence that includes physical, psychological, verbal and other non-physical aspects (Connell, 2005; Flood, 2019). Ice hockey has a long history of violence (Lorenz, 2016)and researchers have examined this culture from several perspectives. Rockerbie (2015)estimates the effect of ice hockey fights on attendance in the NHL and finds that although fighting perhaps was more popular in the early years of the NHL, there is no absolute association between average attendance and fights per game. Other research has shown that male team sports can nurture aggressive and sexist attitudes and behaviour (Messner and Sabo, 1994; Pappas, 2012). Flood’s (2019) work focuses on men and boys and violence prevention and helps us to understand such attitudes and behaviors as an initial step that could, if it escalates, result in men’s violence against women. Although there are strong arguments for male dominated team sports’ objectification of women and femininity and the social problems associated with this, there is a risk of simplification by only attributing such attitudes to participation in ice hockey or a team sport. Alcohol consumption, socialization in a sport, society at large and other factors also need to be taken into account.

    Research Design, Methodology and Data Analysis: Part of a larger project on masculinity ideals and violence norms in Swedish ice hockey from 1965 up until today, the presentation is primarily based on interviews with five Swedish ice hockey coaches. (The project also gathers data from interviews with players, observations from ice hockey games, excerpts from media, examination of the magazine Hockey and (auto)biographies). Taken together, all the coaches had experiences of playing ice hockey themselves from amateur to professional level in Sweden and abroad. The analytical process can be summarized in three steps. Firstly, a thematic analysis was carried out in which different ‘meaning units’ were transformed into ‘condensed meaning units’ and finally collected to ‘codes’. Secondly, the codes or ideals were placed within the theoretical frame and interpreted in terms of an eventual hegemonic, masculine and/or violence-supportive ideal. Lastly, given that some meaning units include norms related to aggression and violence, the discussion section is constructed around preventative suggestions emanating from the findings.

    Results/Findings and Discussion: The main result shows that some of the ice hockey milieu’s positive effects (e.g. community, loyalty, the sense of comfort) to some extent also form the basis as risk factors in developing violent behaviour, (e.g. sexist and derogative attitudes/language, exaggerated hard playing style, collective norms that trigger fights and alcohol consumption). One coach gave an example of the coaches of a junior team he played with (in the early 1990s) who drank alcohol and watched pornographic films in the bus home from away matches. The informant reflected that such behaviour affected the players’ values, their talk about and views of women and their attitudes towards alcohol. Another aspect, highlighted by another informant, is that violence (in a wide sense) can become part of the tactics in certain situations during a game, especially if players are encouraged to ‘provoke and get provoked!’ ie the same qualities that might make someone a successful player could also foster them in violent-supportive attitudes.

    Conclusion, Contribution and Implication: The paper shows how ice hockey, as a male team sport, can nurture and even encourage sexist and violent attitudes but the sport also has a huge preventative potential. The conclusion that can be drawn is that a successful, violence prevention programme in ice hockey (and perhaps also other male dominated team sports) should pay specific attention to such individual behaviour with the aim of minimizing the risk of players developing negative attitudes that in the end nurture patriarchy and enhance the inequalities between men and women.

  • Rodríguez-Zamora, Lara
    et al.
    Örebro universitet, Institutionen för hälsovetenskaper. Environmental Physiology Group, Department of Health Sciences, Mid Sweden University, Östersund, Sweden.
    Padial, Paulino
    Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain.
    Schoenfeld, Brad John
    Department of Health Sciences, Lehman College, New York, NY, United States.
    Feriche, Belen
    Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain.
    Mean Propulsive Velocity Is a Viable Method for Adjusting the Resistance-Training Load at Moderate Altitude: Monitoring Resistance Load at Altitude2019Inngår i: Frontiers in Sports and Active Living, E-ISSN 2624-9367, Vol. 1, artikkel-id 52Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We examined the viability of using mean propulsive velocity (MPV) to adjust the load in the countermovement jump (CMJ) at moderate altitude. Twenty-four volunteers were assigned to a 4-week power-oriented resistance training (RT) program in either normoxia (N, 690 m) or intermittent hypobaric hypoxia (IH, 2,320 m). The load was adjusted to maintain execution velocity of CMJ at 1m·s−1 of MPV. Relative peak power output (Prel), and percentage of velocity loss throughout the sets (VL) were determined for each session. The internal load was measured by the rating of perceived exertion (RPE). The absolute load lifted was higher in IH compared to N (75.6 ± 8.4 vs. 58.5 ± 12.3 kg P < 0.001). However, similar relative increases for both groups were found when comparing the final values (IH: 8.2%, P = 0.007; N: 9.8%, P = 0.03) with no changes in VL between groups (P = 0.36). Post-study Prel improved significantly only in IH (+7% W·kg−1P = 0.002). Mean RPE was greater in IH vs. N (6.8 ± 1.5 vs. 5.6 ± 2, P < 0.001). The MPV seems to be a viable method for adjusting external load during RT at moderate altitude. However, given that RT at moderate altitude increases RPE, it is prudent to monitor internal load when using the MPV to best determine the actual physiological stress of the session.

  • Bagger, Anette
    et al.
    Örebro universitet, Institutionen för humaniora, utbildnings- och samhällsvetenskap.
    Helena, Vennberg
    Institutionen för Naturvetenskapernas och Matematikens didaktik, UFM, Umeå Universitet, Umeå, Sverige.
    Early assessment in mathematics, the ethics in a practice close research approach2019Inngår i: Abstractbok, 2019Konferansepaper (Fagfellevurdert)
    Abstract [en]

    One of the latest reforms to increase the equity and quality in mathematics education is mandatory national assessment in Preschool-class. It is supposed to govern the action, focus and professional language of the pedagogues. In an earlier study of preparatory work, policy decisions and assessment material, we discovered that there is a risk for schoolification of the Preschool-class, through this reform. A second risk is that students could be locked into "levels" of achievement and a third risk lies in a potential narrowing down of the curriculum (Bagger, Björklund, Vennberg, Accepted). At the same time, earlier research show that early assessment can lead to positive development for students in need of support (Vennberg & Norqvist, 2018). Deriving from our initial study of national assessment in preschool class, we have planned for a follow up project with the aim to contribute to knowledge of and developing the practice about the preschool class teacher’s work with national assessment in mathematics. During the conference we will present and discuss ethical and methodological challenges in this project. More specifically, we want to discuss what is required of practice close approaches in these ethically demanding situations of vulnerability and assessment in mathematics with young students. A key issue is the opportunities for teachers and researchers to manage the information collected during the  national assessment and handling of sensitive data, how they jointly can contribute to the development and management of the knowledge that generated about students' opportunities to learn and to demonstrate their knowledge. And finally, in what way this might contribute to assessment and teaching in mathmatics continues to have its starting points in the unique assignment of the preschool-class.

    References

    Bagger, A., Björklund, L. & Vennberg, H. (accepted). The politics of early assessment in mathematics education. CERME11 in Utrecht, January 2019.

    Vennberg, H. & Norqvist, M. (2018). Counting on – long term effects of an early intervention program. In Bergqvist, E., Österholm, M., G, C & Sumpter, L. (Eds.), Proceedings of the 42nd Conference of the International Group for the Psychology of Mathematics Education, Vol. 4, (pp. 355-362). Umeå, Sweden: PME.

  • Grosinger, Jasmin
    Örebro universitet, Institutionen för naturvetenskap och teknik.
    On Making Robots Proactive2019Doktoravhandling, monografi (Annet vitenskapelig)
    Abstract [en]

    The question addressed in this thesis is: Can we make robots proactive? Proactivity is understood as self-initiated, anticipatory action. This entails the ability to generate own goals and pursue them. Our work is based on the assumption that proactivity makes robots more acceptable in human-inhabited environments. Proactive behavior is opposed to reactive behavior which is merely responding to external events and explicit requests (by the user). We approach the question of how to make robots proactive by first identifying the necessary cognitive capabilities, how they relate and interact. We find that to enable proactive behavior one needs to bridge the gap between context, planning, acting and goal reasoning. We then propose a model of opportunity which formalizes and relates these cognitive capabilities in order to create proactivity. In order to make the model of opportunity computational we introduce a framework called equilibrium maintenance. We show formally and empirically that the framework can make robots act in a proactive way. We can make guarantees about the behavior of a robot acting based on equilibrium maintenance: we prove that given certain assumptions a system employing our framework is kept within desirable states. Equilibrium maintenance is instantiated in different scenarios, both theoretically and in practice by deploying it in a number of systems including both robots and humans. More specifically, we conduct experimental runs in simulation in the domain of robotic disaster management and we implement the framework on a real robot in a domestic environment. The latter is done by integration in different levels, from conceptual examples to closing the loop with a full robotic system. Empirical results confirm that equilibrium maintenance creates proactive behavior and leads to preferable outcomes.

  • Barker, Dean
    et al.
    University of Gothenburg, Gothenburg, Sweden.
    Wallhead, Tristan
    University of Wyoming, Laramie, WY, United States.
    Brock, Sheri
    Auburn University, Auburn, AL, United States.
    Goodyear, Victoria
    University of Birmingham, Edgbaston, Birmingham, United Kingdom.
    Amade-Escot, Chantal
    University of Toulouse, Toulouse, France.
    Group Work in Physical Education: Exploring the Interconnectedness of Theoretical Approaches and Practice2017Inngår i: Journal of teaching in physical education, ISSN 0273-5024, E-ISSN 1543-2769, Vol. 36, s. 50-60Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Student group work is a central feature of many contemporary pedagogical approaches to teaching physicaleducation. Despite this proliferation, our understanding of the teaching-learning dynamics inherent in groupwork remains limited and has tended to be under-theorized. The purpose of this paper was to examine differenttheoretical approaches to group work to identify similarities and differences and consequently provide insightsand recommendations into ways of using group work as a pedagogical strategy. Four theoretical approaches togroup work models were described in detail with brief empirical examples used to illustrate aspects to whicheach approach draws attention. The examination demonstrates conceptual overlap, elaboration and distinctionsbetween the theoretical approaches related to: (i) content knowledge; (ii) engaging learners; (iii) theteacher’s role; and (iv) group composition. Meta-theoretical discussions of teaching strategies such as groupwork generate important discourse on the potential for the development of effective pedagogical practice.

  • Paul, Satyam
    et al.
    Örebro universitet, Institutionen för naturvetenskap och teknik.
    Morales-Menendez, Ruben
    School of Engineering and Sciences, Tecnológico de Monterrey, Monterrey, NL, Mexico.
    Chatter Mitigation in Milling Process Using Discrete Time Sliding Mode Control with Type 2-Fuzzy Logic System2019Inngår i: Applied Sciences: APPS, ISSN 1454-5101, E-ISSN 1454-5101, Vol. 9, nr 20, artikkel-id 4380Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In order to achieve a high-quality machining process with superior productivity, it is very important to tackle the phenomenon of chatter in an effective manner. The problems like tool wear and improper surface finish affect the milling process and are caused by self-induced vibration termed as chatter. A strategy to control chatter vibration actively in the milling process is presented. The mathematical modeling of the process is carried out initially. In this paper, an innovative technique of discrete time sliding mode control (DSMC) is blended with the type-2 fuzzy logic system. The proposed active controller results in a significantly high mitigation of vibration. The DSMC is linked to the time-varying gain which is an innovative approach to mitigate chattering. The theorem is laid down which validates that the system states are bounded in the case of DSMC-type-2 fuzzy. Stability analysis is carried out using Lyapunov candidate. The nonlinearities linked with the cutting forces and damper friction are handled effectively by using the type-2 fuzzy logic system. The performance of the DSMC-type-2 fuzzy concept is compared with the discrete time PID (D-PID) and discrete time sliding mode control for validating the effectiveness of the controller. The better performance of DSMC-type-2 fuzzy over D-PID and DSMC-T1 fuzzy in the minimization of milling chatter are validated by a numerical analysis approach.

  • Giannotta, Fabrizia
    et al.
    Division of Public Health Sciences, School of Health, Care and Social Welfare, Mälardarens University, Västerås, Sweden.
    Özdemir, Metin
    Örebro universitet, Institutionen för juridik, psykologi och socialt arbete.
    Stattin, Håkan
    Department of Psychology, Uppsala University, Uppsala, Sweden.
    The Implementation Integrity of Parenting Programs: Which Aspects Are Most Important?2019Inngår i: Child and Youth Care Forum, ISSN 1053-1890, E-ISSN 1573-3319, Vol. 48, nr 6, s. 917-933Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Background: The implementation of preventive interventions is considered a crucial aspect of their success. However, few studies have investigated which components of implementation are most important.

    Objective: We aimed to understand whether the components of implementation integrity—adherence, quality of delivery, dose, and participants’ involvement—influenced the effectiveness of four parenting programs. We also investigated factors associated with these components.

    Method: Data come from a national evaluation of parenting programs in Sweden. The study was a randomised controlled effectiveness trial, with a sample of 535 parents with 3–12-year-old children. Measures included parenting behaviors (angry outbursts, harsh parenting, attempts to understand, rewarding, and praising), child conduct problems (ECBI and SNAP-V), and measures tapping into the four components (adherence, quality of delivery, dose, and participant involvement).

    Results: We ran multilevel models and found that implementation quality (adherence and quality of delivery) did not influence the effects on parents and children. Conversely, participant involvement was associated with improvements in parenting and child conduct. Finally, parents’ perceptions of their leaders as supportive and understanding were associated with parents’ responsiveness and attendance.

    Conclusions: Our study highlights the importance of having actively engaged parents to maximise intervention effects.

  • Barker, Dean
    et al.
    Department of Food and Nutrition, and Sport Science, University of Gothenburg, Gothenburg, Sweden.
    Bergentoft, Helene
    Department of Food and Nutrition, and Sport Science, University of Gothenburg, Gothenburg, Sweden.
    Nyberg, Gunn
    Sport and Health Science, University of Dalarna, Falun, Sweden.
    What would physical educators know about movement education? A review of literature2017Inngår i: Quest (National Association for Physical Education in Higher Education), ISSN 0033-6297, E-ISSN 1543-2750, Vol. 69, nr 4, s. 419-435Artikkel, forskningsoversikt (Fagfellevurdert)
    Abstract [en]

    This review article identifies the conceptual underpinnings of currentmovement research in physical education. Using a hermeneuticapproach, four analogies for movement education are identified:the motor program analogy, the neurobiological systems analogy, theinstinctive movement analogy, and the embodied exploration analogy.Three issues related to logical consistency and its relevance for movementeducation are raised. The first relates to tensions between theanalogies and educational policy. The second concerns differencesamong the four analogies. The third issue relates to the appropriatenessof specific analogies for dealing with certain movement contexts.In each case, strategies for improvement are considered. Thearticle concludes with a brief summary, along with reflections onissues that require further attention.

  • Tryggvason, Ásgeir
    Örebro universitet, Institutionen för humaniora, utbildnings- och samhällsvetenskap.
    How to End a Discussion: Consensus or Hegemony?2019Inngår i: Democracy & Education, ISSN 1085-3545, E-ISSN 2164-7992, Vol. 27, nr 2, s. 1-5Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    By taking the vantage point of agonistic pluralism, the aim is to enter into dialogue with Samuelsson’s theoretical development of consensus as an educational aim for classroom discussions. The response highlights three points of interest in the deliberative conception of consensus. The first point relates to the problem of exclusion, which Samuelsson clearly framed as something that concerns deliberative theory and agonistic theory. The second point is about the relation between conflict and consensus and the kind of conflict that is compatible with Samuelsson’s idea of consensus. The concluding part of this response is an exploration of how the agonistic concept of hegemony could function as an alternative aim for ending classroom discussions.

  • Janemalm, Lucas
    et al.
    Örebro University, Örebro, Sweden.
    Quennerstedt, Mikael
    Örebro universitet, Institutionen för hälsovetenskaper.
    Barker, Dean
    University of Gothenburg, Sweden; The Swedish School of Sport and Health Sciences (GIH), Sweden.
    What is complex in complex movement? A discourse analysis of conceptualizations of movement in the Swedish physical education curriculum2019Inngår i: European Physical Education Review, ISSN 1356-336X, E-ISSN 1741-2749, Vol. 25, nr 4, s. 1146-1160Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In 2011, the Swedish National Agency for Education introduced a new national curriculum. Thecurriculum contained a number of new terms. One in particular proved problematic for physicaleducators – complex movement. The confusion surrounding the term could be seen as somewhatunexpected since movement is and has been a central element of practically all physical education(PE) curricula. The specific aim of this paper is to identify how the discourse regarding complexmovement is assembled, and by doing so, provide insights into the meaning(s) of complexmovement within the context of PE policy in Sweden. Following Englund and Quennerstedt (2008),the study is framed within a Swedish curriculum theory tradition and six policy texts are examinedusing a discourse analytic methodology. The results suggest three different inferences of complexmovement discourse: advanced with a wide meaning; context-dependent and related to sports forolder pupils; and knowledge-dependent where different views about knowledge exist. From theseresults, three discussion points are raised related to: the diversity of possible meanings presentedin policy; the connection between knowledge and understanding; and the probability of differentaudiences reading the texts in different ways. The paper is concluded with a consideration of theconsequences of different inferences concerning complex movement and whether greater consensusis necessary.

  • Rönnqvist, Mats
    et al.
    The Technical High School of Lindholmen, Gothenburg, Sweden.
    Larsson, Håkan
    The Swedish School of Sport and Health Sciences, Stockholm, Sweden.
    Nyberg, Gunn
    University of Dalarna, Falun, Sweden.
    Barker, Dean
    Örebro universitet, Institutionen för hälsovetenskaper. The Technical High School of Lindholmen, Gothenburg, Sweden.
    Understanding learners’ sense making of movement learning in physical education2019Inngår i: Curriculum Studies in Physical Education and Health, ISSN 2574-2981, Vol. 10, nr 2, s. 172-186Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    There is a substantial body of physical education scholarshipfocusing on movement learning. The question of how pupilsthemselves make sense of movement learning has however,largely escaped attention. Answers to such a question wouldseem to be highly germane if educators are to engage in pupilcenteredpedagogies. In light of this absence, the aim of thisinvestigation was to describe how movement learners madesense of their own movement development. Drawing ontheoretical tenets of Gilbert Ryle (2009. The concept of mind.New York, NY: Routledge) and Michael Polanyi (1969. Knowing andbeing. Essays by Michael Polanyi. Chicago, IL: University of ChicagoPress), three cases from an investigation in which movementlearning was occurring are presented. The investigation wasconducted during a physical education project week with pupilsfrom an upper secondary school. Data were produced usingobservations, informal interviews, semi-structured interviews, andresearch diaries as a group of pupils learned to juggle. The resultssuggest that: the aspects of moving to which learners attendchange as they learn; learners have a relatively limited capacity toverbally articulate what they learn, and; learners’ expectations ofideal ways of moving have considerable impact on how theycome to make sense of their own ways of moving. The practicalimplications of these points are discussed in the final section ofthe paper.

  • Barker, Dean
    et al.
    Örebro universitet, Institutionen för hälsovetenskaper. Department of Food and Nutrition, and Sport Science, University of Gothenburg, Gothenburg, Sweden.
    Nyberg, Gunn
    Department of Sport and Health Science, University of Dalarna, Falun, Sweden.
    Larsson, Håkan
    The Swedish School of Sport and Health Sciences (GIH), Stockholm, Sweden.
    Joy, fear and resignation: Investigating emotions in physical education using a symbolic interactionist approach2019Inngår i: Sport, Education and Society, ISSN 1357-3322, E-ISSN 1470-1243Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Emotional dimensions of physical education have garnered attention fromscholars in the last two decades. Many scholars claim that emotionssignificantly affect learning and that positive emotions such as joy andpleasure are necessary for continued participation in movementactivities beyond the classroom. Much of the existing literature,however, is based on the idea that emotions comprise internal mentalstates that are retrospectively oriented. In the current paper, we workwith alternative principles that can create new understandings of theaffective dimensions of PE and specifically, movement learning. We drawon symbolic interactionist principles, framing emotions as multimodalcommunicative resources that are performed in social contexts. Fromthis perspective, we demonstrate how emotions: (1) can be investigatedas part of the production of broader sequences of pedagogical actionand (2) relate to issues of knowledge, identity and authority. We presentobservational material generated with PE teacher education students asthey develop movement capability. We focus on three interactionalepisodes in which fear, joy and resignation are performed by studentsinteracting with either peers or an observing researcher. In each case,we demonstrate how emotions: affiliate or dis-affiliate the actor with themovement knowledge in focus, index an institutionally recognizableidentity and influence the subsequent actions of the participants in theinteractional sequence. The key thesis developed in the paper is that assymbolic resources, emotions have important consequences for actorswithin movement learning environments. The paper is concluded withreflections on the implications of the approach for practitioners alongwith a consideration of questions in need of further scientific attention.

  • Nemati, Farhang
    Örebro universitet, Institutionen för naturvetenskap och teknik. Mälardalens högskola, Akademin för innovation, design och teknik.
    Resource Sharing in Real-Time Systems on Multiprocessors2012Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    In recent years multiprocessor architectures have become mainstream, and multi-core processors are found in products ranging from small portable cell phones to large computer servers. In parallel, research on real-time systems has mainly focused on traditional single-core processors. Hence, in order for real-time systems to fully leverage on the extra capacity offered by new multi-core processors, new design techniques, scheduling approaches, and real-time analysis methods have to be developed.

    In the multi-core and multiprocessor domain there are mainly two scheduling approaches, global and partitioned scheduling. Under global scheduling each task can execute on any processor at any time while under partitioned scheduling tasks are statically allocated to processors and migration of tasks among processors is not allowed. Besides simplicity and efficiency of partitioned scheduling protocols, existing scheduling and synchronization techniques developed for single-core processor platforms can more easily be extended to partitioned scheduling. This also simplifies migration of existing systems to multi-cores. An important issue related to partitioned scheduling is the distribution of tasks among the processors, which is a bin-packing problem.

    In this thesis we propose a blocking-aware partitioning heuristic algorithm to distribute tasks onto the processors of a multi-core architecture. The objective of the proposed algorithm is to decrease the blocking overhead of tasks, which reduces the total utilization and has the potential to reduce the number of required processors.

    In industrial embedded software systems, large and complex systems are usually divided into several components (applications) each of which is developed independently without knowledge of each other, and potentially in parallel. However, the applications may share mutually exclusive resources when they co-execute on a multi-core platform which introduce a challenge for the techniques needed to ensure predictability. In this thesis we have proposed a new synchronization protocol for handling mutually exclusive resources shared among real-time applications on a multi-core platform. The schedulability analysis of each application is performed in isolation and parallel and the requirements of each application with respect to the resources it may share are included in an interface. The protocol did not originally consider any priorities among the applications. We have proposed an additional version of the protocol which grants access to resources based on priorities assigned to the applications. We have also proposed an optimal priority assignment algorithm to assign unique priorities to the applications sharing resources. Our evaluations confirm that the protocol together with the priority assignment algorithm outperforms existing alternatives in most cases.

    In the proposed synchronization protocol each application is assumed to be allocated on one dedicated core. However, in this thesis we have further extended the synchronization protocol to be applicable for applications allocated on multiple dedicated cores of a multi-core platform. Furthermore, we have shown how to efficiently calculate the resource hold times of resources for applications. The resource hold time of a resource for an application is the maximum duration of time that the application may lock the resource whenever it requests the resource. Finally, the thesis discusses and proposes directions for future work.

  • Nemati, Farhang
    Mälardalens högskola, Akademin för innovation, design och teknik.
    Partitioned Scheduling of Real-Time Tasks on Multi-core Platforms2010Licentiatavhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    In recent years multiprocessor architectures have become mainstream, and multi-core processors are found in products ranging from small portable cell phones to large computer servers. In parallel, research on real-time systems has mainly focused on traditional single-core processors. Hence, in order for real-time systems to fully leverage on the extra capacity offered by new multi-core processors, new design techniques, scheduling approaches, and real-time analysis methods have to be developed.

    In the multi-core and multiprocessor domain there are mainly two scheduling approaches, global and partitioned scheduling. Under global scheduling each task can execute on any processor at any time while under partitioned scheduling tasks are statically allocated to processors and migration of tasks among processors is not allowed. Besides simplicity and efficiency of partitioned scheduling protocols, existing scheduling and synchronization methods developed for single-core processor platforms can more easily be extended to partitioned scheduling. This also simplifies migration of existing systems to multi-cores. An important issue related to partitioned scheduling is distribution of tasks among processors which is a bin-packing problem.

    In this thesis we propose a partitioning framework for distributing tasks on the processors of multi-core platforms. Depending on the type of performance we desire to achieve, the framework may distribute a task set differently, e.g., in an application in which tasks process huge amounts of data the goal of the framework may be to decrease cache misses.Furthermore, we propose a blocking-aware partitioning heuristic algorithm to distribute tasks onto the processors of a multi-core architecture. The objective of the proposed algorithm is to decrease blocking overhead of tasks which reduces the total utilization and has the potential to reduce the number of required processors.Finally, we have implemented a tool to facilitate evaluation and comparison of different multiprocessor scheduling and synchronization approaches, as well as different partitioning heuristics. We have applied the tool in the evaluation of several partitioning heuristic algorithms, and the tool is flexible to which any new scheduling or synchronization protocol as well as any new partitioning heuristic can easily be added.

  • Goodyear, Victoria A.
    et al.
    School of Sport, Exercise and Rehabilitation Sciences, University of Birmingham, Birmingham, United Kingdom of Great Britain and Northern Ireland, UK.
    Quennerstedt, Mikael
    Örebro universitet, Institutionen för hälsovetenskaper.
    #Gymlad: young boys learning processes and health-related social media2020Inngår i: Qualitative Research in Sport, Exercise and Health, ISSN 2159-676X, E-ISSN 2159-6778, Vol. 12, nr 1, s. 18-33Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Recent systematic reviews identify that the factors mediating and/or moderating the relationship between social media and health outcomes are sparse. There have also been few attempts to analyse gender specific uses of social media. This paper investigated young boys health-related learning in relation to social media. Data were generated from class activities and interviews and from a large data set that included 1346 young people. The approach to the empirical data adopted was Practical Epistemology Analysis (PEA). The findings reveal two main purposes of young boys engagement with social media: (i) communicating with friends, and (ii) accessing health-related information. Irony and humour were central learning mechanisms used by young boys to participate within health-related social media, and in a way that enabled them to engage with, uphold, and handle health discourses associated with masculinity – such as being ripped – without fear of ‘literal’ peer ridicule and within a context of acceptable ‘banter’. There was evidence that young people were critical users and generators of social media, who were clearly thinking through what they see, do, and use online. Hence, this paper provides a fresh evidence-based perspective on the potentially positive role of social media as a health-related learning resource. PEA is illustrated as a new methodological approach for investigating learning in the context of social media. The evidence generated can be used to inform future evaluations of social media use, the design of educative support for young people, and guidance and training for key stakeholders.

  • Ahlander, Britt-Marie
    Department of Medical and Health Sciences, Linköping University, Linköping, Sweden.
    Magnetic Resonance Imaging of the Heart: Image quality, measurement accuracy and patient experience2016Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    Background: Non-invasive diagnostic imaging of atherosclerotic coronary artery disease (CAD) is frequently carried out with cardiovascular magnetic resonance imaging (CMR) or myocardial perfusion single photon emission computed tomography (MPS). CMR is the gold standard for the evaluation of scar after myocardial infarction and MPS the clinical gold standard for ischemia. Magnetic Resonance Imaging (MRI) is at times difficult for patients and may induce anxiety while patient experience of MPS is largely unknown.

    Aims: To evaluate image quality in CMR with respect to the sequences employed, the influence of atrial fibrillation, myocardial perfusion and the impact of patient information. Further, to study patient experience in relation to MRI with the goal of improving the care of these patients.

    Method: Four study designs have been used. In paper I, experimental cross-over, paper (II) experimental controlled clinical trial, paper (III) psychometric crosssectional study and paper (IV) prospective intervention study. A total of 475 patients ≥ 18 years with primarily cardiac problems (I-IV) except for those referred for MRI of the spine (III) were included in the four studies.

    Result: In patients (n=20) with atrial fibrillation, a single shot steady state free precession (SS-SSFP) sequence showed significantly better image quality than the standard segmented inversion recovery fast gradient echo (IR-FGRE) sequence (I). In first-pass perfusion imaging the gradient echo-echo planar imaging sequence (GREEPI) (n=30) had lower signal-to-noise and contrast–to-noise ratios than the steady state free precession sequence (SSFP) (n=30) but displayed a higher correlation with the MPS results, evaluated both qualitatively and quantitatively (II). The MRIAnxiety Questionnaire (MRI-AQ) was validated on patients, referred for MRI of either the spine (n=193) or the heart (n=54). The final instrument had 15 items divided in two factors regarding Anxiety and Relaxation. The instrument was found to have satisfactory psychometric properties (III). Patients who prior CMR viewed an information video scored significantly (lower) better in the factor Relaxation, than those who received standard information. Patients who underwent MPS scored lower on both factors, Anxiety and Relaxation. The extra video information had no effect on CMR image quality (IV).

    Conclusion: Single shot imaging in atrial fibrillation produced images with less artefact than a segmented sequence. In first-pass perfusion imaging, the sequence GRE-EPI was superior to SSFP. A questionnaire depicting anxiety during MRI showed that video information prior to imaging helped patients relax but did not result in an improvement in image quality.

  • Petersson, Johan
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling.
    Elektroniska marknadsplatser: IT-stöd för små och medelstora leverantörer2019Doktoravhandling, monografi (Annet vitenskapelig)
    Abstract [sv]

    Den här avhandlingens ämne är elektroniska marknadsplatser och hur sådana bör utformas utifrån mindre leverantörers perspektiv. Med leverantörer avses här de säljande företag som använder marknadsplatser som mellanhand för att sälja varor och tjänster. I den situation som studerats används ofta denna kanal på begäran av kunden och dessutom via en marknadsplats vars utformning primärt är utformad utifrån kundens behov. Den kategori av marknadsplatser som har studerats har vidare inriktning mot inköp och försäljning mellan organisationer och företag.

    En central utgångspunkt och viktig förutsättning för studiens berättigande är uppfattningen om att forskningen kring den här kategorin av elektroniska marknadsplatser visat ett oproportionerlig litet intresse för just leverantörernas situation i allmänhet och de mindre aktörerna i synnerhet. Detta trots att ett reellt kunskapsbehov existerar såväl inomvetenskapligt som i praktikfältet. Det problem som ligger bakom praktikfältets kunskapsbehov har dessutom aktualiserats och accentuerats i Sverige under avhandlingsarbetes absoluta slutfas. Detta genom förändrad lagstiftning som innebär att alla leverantörer till offentlig sektor har krav på sig att kunna kommunicera elektroniskt.

    Den övergripande forskningsfråga som behandlas har formulerats som: ”Vilken utformning bör en elektronisk marknadsplats ha för att stödja mindre leverantörers ändamål?” och sedermera besvarats genom utveckling, presentation och tillämpning av en uppsättning utformningskriterier. Den övergripande forskningsstrategin har omfattat genomförande av en kvalitativ fallundersökning bestående av flera delstudier och praktikteori har utgjort ett centralt teoretiskt perspektiv. Undersökningens primära fall har varit den väletablerade skandinaviska marknadsplatsen Visma Proceedo och det praktiska genomförande har inneburit insamling och analys av data i form av intervjuer, dokument och demosystemtester.

    Kunskapsbidraget studien resulterat i består av fyra delar: en uppsättning utformningskriterier för elektroniska marknadsplatser, en kategorisering av mindre leverantörers ändamål, begreppsutveckling om s.k. marknadsplatspraktiker respektive ett antal praktikteoretiska utformningsprinciper. De två förstnämnda bidragen är riktade mot både praktikfältet och forskarsamhället med de två senare mer teoretiskt och inomvetenskapligt ämnade.

    Utformningskriterierna består av sju preskriptiva utsagor vilka är ämnade att kunna användas som riktningsvisare vid marknadsplatsutformning. Kriterierna utgör därmed det egentliga svaret på den övergripande forskningsfrågan. Studiens identifiering och kategorisering av de mindre leverantörernas ändamål visar att leverantörerna använder marknadsplatsen för att tillmötesgå befintliga kunders önskemål och krav. Vidare visar analysen två huvudkategorier vilka utgör centrala förutsättningar för de mindre leverantörernas aktivitet på den här typen av elektronisk marknadsplats: dels möjligheten till kontroll: att kunna granska och påverka sin egen information och dels behovet av matchning: överensstämmelse mellan marknadsplatsaktiviteten och den övriga (egna) verksamheten.

    I syfte att betrakta, analysera och förstå det studerade fenomenet presenterar avhandlingen också de två praktikteoretiska begreppen marknadsplatspraktik respektive försäljningspraktik. Intressenter för detta bidrag finns primärt bland forskare med intresse praktikteori och interorganisatoriska företeelser som elektroniska marknadsplatser.

    På vägen mot de tillämpningsspecifika utformningskriterierna har avhandlingsarbetet emellertid också inneburit teoriutveckling på ett betydligt mer generiskt plan. Resultatet är att en till karaktären deskriptiv praktikteoretisk modell har utökats med en uppsättning designprinciper. Principerna är resultat av en teoretisk syntes av informationssystemteori, sociotekniska designprinciper och praktikteori. Då principerna och tillämpningen av dem presenteras åtskilt från varandra är det möjligt för andra att tillämpa, testa och vidareutveckla dem helt bortom undersökningens fall och studieområde.

  • Andersson, Ida
    Stockholms universitet, Kulturgeografiska institutionen.
    Geographies of Place Branding: Researching through small and medium sized cities2015Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    Place branding is commonly conceptualized with a focus on big cities, such as London, New York and Singapore, building from concepts and models from mainstream branding theory. In contrast to such conceptualizations, this thesis focuses on place branding in small and medium-sized cities. The present thesis aims to study place branding from a geographical perspective. It starts with debates theoretical and empirical understandings of place branding; what it is and how it is affecting the places where it is introduced. The thesis develops and argues for a perspective of territoriality and relationality to place branding discussing concepts, methods and empirical approaches to carry out place branding research using geographical perspectives. Empirically, this thesis focuses on in-depth studies of place branding in small and medium-sized cities in Sweden. By analyzing the development of place branding over the course of time, nuances and aspects of both territorial and relational origin emerge, situating place branding practices within a wider spatial contextualization. Four individual papers are presented, which taken together contribute to the aim of the thesis. Paper 1 introduces the place branding research field in geography and how it has developed; Paper 2 investigates the phenomena of flagship buildings located in small cities and towns; Paper 3 discusses the relationship between policy tourism and place branding; and Paper 4 analyzes how local environmental policies are affected by green place branding. The thesis demonstrates the complex and continuously interchangeable spatial structures and place contexts that create and re-produce the geographies of place branding. Here, research models and methodological examples are presented to illustrate how place branding can be studied from a geographical perspective and thus improve theoretical understandings of place branding.