| 1. |
- Amanullah, Rahman, et al.
(author)
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Diversity in extinction laws of Type Ia supernovae measured between 0.2 and 2 μm
- 2015
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In: Monthly notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 453:3, s. 3300-3328
-
Journal article (peer-reviewed)abstract
- We present ultraviolet (UV) observations of six nearby Type Ia supernovae (SNe Ia) obtained with the Hubble Space Telescope, three of which were also observed in the near-IR (NIR) with Wide-Field Camera 3. UV observations with the Swift satellite, as well as ground-based optical and NIR data provide complementary information. The combined data set covers the wavelength range 0.2-2 mu m. By also including archival data of SN 2014J, we analyse a sample spanning observed colour excesses up to E(B - V) = 1.4 mag. We study the wavelength-dependent extinction of each individual SN and find a diversity of reddening laws when characterized by the total-to-selective extinction R-V. In particular, we note that for the two SNe with E(B - V) greater than or similar to 1 mag, for which the colour excess is dominated by dust extinction, we find R-V = 1.4 +/- 0.1 and R-V = 2.8 +/- 0.1. Adding UV photometry reduces the uncertainty of fitted R-V by similar to 50 per cent allowing us to also measure R-V of individual low-extinction objects which point to a similar diversity, currently not accounted for in the analyses when SNe Ia are used for studying the expansion history of the Universe.
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| 2. |
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| 3. |
- Andersson, Per, 1964-, et al.
(author)
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Introduction : Introducing research on recognition of prior learning
- 2015. - 1
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In: Recognition of Prior Learning. - London & New York : Routledge. - 9781138955028 ; , s. 1-7
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Book chapter (other academic/artistic)abstract
- This is the introduction chapter of an anthology of research on recognition of prior learning, previously published as a special issue of the International Journal of Lifelong Education.
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| 4. |
- Andreas, Sandberg, et al.
(author)
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Limits on Lyman Continuum Escape from z = 2.2 Hα-emitting Galaxies
- 2015
-
In: Astrophysical Journal Letters. - 2041-8205 .- 2041-8213. ; 814:1
-
Journal article (peer-reviewed)abstract
- The leakage of Lyman continuum (LyC) photons from star-forming galaxies is an elusive parameter. When observed, it provides a wealth of information on star formation in galaxies and on the geometry of the interstellar medium, and puts constraints on the role of star-forming galaxies in the reionization of the universe. Hα-selected galaxies at trace the highest star formation population at the peak of cosmic star formation history, providing a base for directly measuring LyC escape. Here we present this method and highlight its benefits as well as caveats. We also use the method on 10 Hα emitters in the Chandra Deep Field South at also imaged with the Hubble Space Telescope in the ultraviolet. We find no individual LyC detections, and our stack puts a 5σ upper limit on the average absolute escape fraction of <24%, consistent with similar studies. With future planned observations, the sample sizes should rapidly increase and the method presented here should provide very robust constraints on the escape fraction.
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| 5. |
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| 6. |
- Baliakas, Panagiotis, et al.
(author)
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Not all IGHV3-21 chronic lymphocytic leukemias are equal: prognostic considerations.
- 2015
-
In: Blood. - : American Society of Hematology. - 1528-0020 .- 0006-4971. ; 125:5, s. 856-859
-
Journal article (peer-reviewed)abstract
- An unresolved issue in chronic lymphocytic leukemia (CLL) is whether IGHV3-21 gene usage, in general, or the expression of stereotyped B-cell receptor immunoglobulin defining subset #2 (IGHV3-21/IGLV3-21), in particular, determines outcome for IGHV3-21-utilizing cases. We reappraised this issue in 8593 CLL patients of whom 437 (5%) used the IGHV3-21 gene with 254/437 (58%) classified as subset #2. Within subset #2, immunoglobulin heavy variable (IGHV)-mutated cases predominated, whereas non-subset #2/IGHV3-21 was enriched for IGHV-unmutated cases (P = .002). Subset #2 exhibited significantly shorter time-to-first-treatment (TTFT) compared with non-subset #2/IGHV3-21 (22 vs 60 months, P = .001). No such difference was observed between non-subset #2/IGHV3-21 vs the remaining CLL with similar IGHV mutational status. In conclusion, IGHV3-21 CLL should not be axiomatically considered a homogeneous entity with adverse prognosis, given that only subset #2 emerges as uniformly aggressive, contrasting non-subset #2/IGVH3-21 patients whose prognosis depends on IGHV mutational status as the remaining CLL.
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| 7. |
- Born, Andreas, et al.
(author)
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A man´s world? – The impact of a male dominated environment on female leadership
- 2018
-
Reports (other academic/artistic)abstract
- Despite the significant growth in female labor force participation and educational attainment over the past decades, few women reach leadership positions. In this study, we explore whether male dominated environments, in and of themselves, adversely affect women´s willingness to lead a team. We find that women randomly assigned to male majority teams are less willing to become team leaders than women assigned to female majority teams. Analyses of potential mechanisms show that women in male majority teams are less confident in their relative performance, less influential, and more swayed by others in team discussions. They also (accurately) believe that they will receive less support from team members in a leadership election. Taken together, our results indicate that the absence of women in male dominated contexts may be a self-reinforcing process.
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| 8. |
- Bratt, Ola, 1963, et al.
(author)
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The Value of an Extensive Transrectal Repeat Biopsy with Anterior Sampling in Men on Active Surveillance for Low-risk Prostate Cancer: A Comparison from the Randomised Study of Active Monitoring in Sweden (SAMS)
- 2019
-
In: European Urology. - : Elsevier BV. - 0302-2838 .- 1873-7560. ; 76:4, s. 461-466
-
Journal article (peer-reviewed)abstract
- Background: A systematic repeat biopsy is recommended for men starting on active surveillance for prostate cancer, but the optimal number and distribution of cores are unknown. Objective: To evaluate an extensive repeat transrectal biopsy with anterior sampling in men starting on active surveillance. Design, setting, and participants: Randomised multicentre trial. From 2012 to 2016, 340 Swedish men, aged 40-75 yr, with recently diagnosed low-volume Gleason grade group 1 prostate cancer were included. Intervention: Either an extensive transrectal biopsy with anterior sampling (median 19 cores) or a standard transrectal biopsy (median 12 cores). Outcome measurements and statistical analysis: Primary outcome measure: Gleason grade group >= 2 cancer. Secondary outcomes: Cancer in anteriorly directed biopsy cores and postbiopsy infection. Nonparametric statistical tests were applied. Results and limitations: Gleason grade group >= 2 cancer was detected in 16% of 156 men who had an extensive biopsy and in 10% of 164 men who had a standard biopsy, a 5.7% difference (95% confidence interval [CI]-0.2% to 13%, p = 0.09). There was a strong linear association between prostate-specific antigen (PSA) density and cancer in the anteriorly directed biopsy cores. The odds ratios for cancer in the anteriorly directed cores were for any cancer 2.2 (95% CI 1.3-3.9, p = 0.004) and for Gleason grade group >= 2 cancer 2.3 (95% CI 1.2-4.4, p = 0.015) per 0.1-ng/ml/cm(3) increments. Postbiopsy infections were equally common in the two groups. A limitation is that magnetic resonance imaging was not used. Conclusions: The trial did not support general use of the extensive transrectal repeat biopsy template, but cancer in the anteriorly directed cores was common, particularly in men with high PSA density. The higher the PSA density, the stronger the reason to include anterior sampling at a systematic repeat biopsy. Patient summary: This trial compared two different templates for transrectal prostate biopsy in men starting on active surveillance for low-risk prostate cancer. Cancer was often found in the front part of the prostate, which is not sampled on a standard prostate biopsy. (C) 2019 European Association of Urology. Published by Elsevier B.V. All rights reserved.
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| 9. |
- Bridel, Claire, et al.
(author)
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Diagnostic Value of Cerebrospinal Fluid Neurofilament Light Protein in Neurology : A Systematic Review and Meta-analysis
- 2019
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In: JAMA Neurology. - : American Medical Association (AMA). - 2168-6149 .- 2168-6157. ; 76:9, s. 1035-1048
-
Research review (peer-reviewed)abstract
- Importance Neurofilament light protein (NfL) is elevated in cerebrospinal fluid (CSF) of a number of neurological conditions compared with healthy controls (HC) and is a candidate biomarker for neuroaxonal damage. The influence of age and sex is largely unknown, and levels across neurological disorders have not been compared systematically to date.Objectives To assess the associations of age, sex, and diagnosis with NfL in CSF (cNfL) and to evaluate its potential in discriminating clinically similar conditions.Data Sources PubMed was searched for studies published between January 1, 2006, and January 1, 2016, reporting cNfL levels (using the search terms neurofilament light and cerebrospinal fluid) in neurological or psychiatric conditions and/or in HC.Study Selection Studies reporting NfL levels measured in lumbar CSF using a commercially available immunoassay, as well as age and sex.Data Extraction and Synthesis Individual-level data were requested from study authors. Generalized linear mixed-effects models were used to estimate the fixed effects of age, sex, and diagnosis on log-transformed NfL levels, with cohort of origin modeled as a random intercept.Main Outcome and Measure The cNfL levels adjusted for age and sex across diagnoses.Results Data were collected for 10 059 individuals (mean [SD] age, 59.7 [18.8] years; 54.1% female). Thirty-five diagnoses were identified, including inflammatory diseases of the central nervous system (n = 2795), dementias and predementia stages (n = 4284), parkinsonian disorders (n = 984), and HC (n = 1332). The cNfL was elevated compared with HC in a majority of neurological conditions studied. Highest levels were observed in cognitively impaired HIV-positive individuals (iHIV), amyotrophic lateral sclerosis, frontotemporal dementia (FTD), and Huntington disease. In 33.3% of diagnoses, including HC, multiple sclerosis, Alzheimer disease (AD), and Parkinson disease (PD), cNfL was higher in men than women. The cNfL increased with age in HC and a majority of neurological conditions, although the association was strongest in HC. The cNfL overlapped in most clinically similar diagnoses except for FTD and iHIV, which segregated from other dementias, and PD, which segregated from atypical parkinsonian syndromes.Conclusions and Relevance These data support the use of cNfL as a biomarker of neuroaxonal damage and indicate that age-specific and sex-specific (and in some cases disease-specific) reference values may be needed. The cNfL has potential to assist the differentiation of FTD from AD and PD from atypical parkinsonian syndromes.
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| 10. |
- Dahlstedt, Magnus, 1975-, et al.
(author)
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Dissonant futures : occupational trajectories, gender and class in contemporary municipal adult education in Sweden
- 2018
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In: Journal of Education and Work. - : Informa UK Limited. - 1363-9080 .- 1469-9435. ; 31:1, s. 16-27
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Journal article (peer-reviewed)abstract
- The aim of this article is to problematize the ways class and gender are played out in adult students’ narratives about their occupational choice and future. Drawing on Beverly Skeggs, we analyse how students think about future occupations, what motivates them towards these and how they are able to form their future in relation to them. Taking on Sweden as a case, our results show that students’ narratives on their future occupations are classed as well as gendered. In their vision of future occupations, working-class students tend to focus on occupations helping and caring for others, while middle-class students tend to focus on work more as a means of fulfilling themselves as individuals. These differences are also gendered. Female students are more likely than their male counterparts to picture their future occupations in relation to having children and a family. This tells us that in the female students’ narratives, there tends to be a strong focus on caring – for their families as well as in future occupations.
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| 11. |
- Dahlstedt, Magnus, et al.
(author)
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Formation of respectable citizens : precarious work and uncertain futures in a f-cked up world
- 2016
-
Conference paper (peer-reviewed)abstract
- Drawing on research on gender and class and especially on the work of Beverly Skeggs we analyse adult educational student’s stories of their future occupations and future lives. We argue that these narratives of the future are both gendered and class specific. The results shows that there are echoes from the past, where the working class focused on being diligent, caring, modest and respectable. There is also a gender difference among the working class students, where women picture their future occupations in relation to having children and a family. For the working class female students their future occupations are further often connected to working with people, i.e. as care workers, teachers or for instance physiotherapist – i.e. work that involve caring in one way or another. Different results are seen in the analysis of middle class students that are more likely to focus on their individual self-realisation, where the futures are grander and not so much connected to a specific time and space. Another important result is that the working class students are modest in the narratives of their future occupations. Imagined occupations would mean a certain amount of social mobility, but rather modest ones.
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| 12. |
- Dahlstedt, Magnus, et al.
(author)
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Longing to belong : Stories of (non)belonging in multi-ethnic Sweden
- 2017
-
In: Nordic Journal of Migration Research. - : De Gruyter Open. - 1799-649X. ; 7:4, s. 197-204
-
Journal article (peer-reviewed)abstract
- The aim of this article is to contribute to an understanding of contemporary processes of negotiations concerning belonging and non-belonging to the Swedish social community. Taking on a theoretical approach on belonging inspired by Yuval-Davis and Jacobsen, the article analyses three individual stories of women who have migrated to Sweden. Out of this analysis, focusing on how these women claim their belonging to a Swedish social community at the same time as they in different ways are denied such belonging by others, we may conclude that although each of the stories told is unique and articulates an individual experience, there are striking similarities in how their claims of belonging, with its related implications for belonging, are not acknowledged by others. In a way, these individual stories tell us something about some of the crucial challenges regarding belonging in contemporary multi-ethnic Sweden, as well as Europe.
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| 13. |
- Dahlstedt, Magnus, et al.
(author)
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Medborgarskapandets paradoxer : Medborgarskapspositioneringar i berättelser om tillhörighet i migrationens tid
- 2017
-
In: Sociologisk forskning. - : Sveriges Sociologförbund. - 0038-0342 .- 2002-066X. ; 54:1, s. 31-50
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Journal article (peer-reviewed)abstract
- Paradoxes of citizen formation: Citizenship positioning in stories about belonging in an era of migrationThis article analyzes the formation of citizenship in today’s multi-ethnic Sweden with a particular focus on how migration renders visible existing citizenship ideals, defined in terms of similarity and difference on the basis of ethno-cultural background. Analysing three individual stories of women who have migrated to Sweden, with different biographies and stories of how they ended up in Sweden, the article focuses on negotiations of the boundaries and contents of citizenship in multi-ethnic Sweden. The point of departure for the analysis is a post-structuralist and discursive approach. In all, the stories address the crucial question of who should be included into the social community and on what conditions – and who should be left out? This particular question is also at the very centre of the political debate in today’s Europe. On the one hand, there are strong arguments about the ’death of multiculturalism’ and demands for new forms of ethno-culturally graduated citizenship – also in Sweden. On the other hand, in Sweden as well as in other European countries, claims for the development of a new and more inclusive societal community have been raised, expanding the rights of citizens to accommodating also those who have been excluded from them.
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| 14. |
- Dahlstedt, Magnus, et al.
(author)
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Medborgarskapandets paradoxer [Paradoxes of citizen formation] : Medborgarskapspositioneringar i berättelser om tillhörighet i migrationens tid. [Citizenship positioning in stories about belonging in an era of migration]
- 2017
-
In: Sociologisk forskning. - : Sveriges sociologförbund. - 0038-0342 .- 2002-066X. ; 54:1-2, s. 31-50
-
Journal article (peer-reviewed)abstract
- This article analyzes the formation of citizenship in today’s multi-ethnic Sweden with a particular focus on how migration renders visible existing citizenship ideals, defined in terms of similarity and difference on the basis of ethno-cultural background. Analysing three individual stories of women who have migrated to Sweden, with different biographies and stories of how they ended up in Sweden, the article focuses on negotiations of the boundaries and contents of citizenship in multi-ethnic Sweden. The point of departure for the analysis is a post-structuralist and discursive approach. In all, the stories address the crucial question of who should be included into the social community and on what conditions – and who should be left out? This particular question is also at the very centre of the political debate in today’s Europe. On the one hand, there are strong arguments about the ’death of multiculturalism’ and demands for new forms of ethno-culturally graduated citizenship – also in Sweden. On the other hand, in Sweden as well as in other European countries, claims for the development of a new and more inclusive societal community have been raised, expanding the rights of citizens to accommodating also those who have been excluded from them.
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| 15. |
- Dahlstedt, Magnus, et al.
(author)
-
To belong or not to belong : negotiating citizenship in an age of migration
- 2016
-
Conference paper (peer-reviewed)abstract
- 2015. More than a million people are seeking refuge in Europe. Over water or over land, children as well as adults are fleeing from war, persecution and poverty. Thousands of them disappear without a trace or drown beneath the waves. Most of the refugees come from the war-torn Syria (International Organisation for Migration 2015). Throughout the member states of the European Union, exceptional policy measures are taken in order to handle the so-called ‘refugee crisis’ – intensified border control, the introduction of ID checks at specific checkpoints as well as within the borders of a country and restrictive rules for the reception of asylum seekers. This precarious situation in Europe addresses a number of crucial questions about the state of citizenship and belonging in contemporary Europe – in an age of large-scale international migration. In an era of international migration established conceptions of citizenship, of who the citizen is or should be, are challenged. International migration highlights some of the fundamental issues of citizenship: which characteristics, abilities or values should the citizen have and how are the relationships between the citizen and society arranged? In the context of international migration certain individuals are seen as ‘naturally’ belonging to the national community they inhabit, guaranteeing a set of rights, while others are seen as not belonging. The question, however, is: Who are included in the societal community, who are excluded, and what conditions are used to decide? This article analyses the formation of citizenship in today’s multi-ethnic Sweden with a particular focus on how migration renders visible existing citizenship ideals, defined in terms of similarity and difference on the basis of ethno-cultural background. Analysing three individual stories of women who have migrated to Sweden, with different biographies, the article focuses on negotiations of the boundaries and contents of citizenship in multi-ethnic Sweden. The point of departure for the analysis is a post-structuralist and discursive approach.
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| 16. |
- Duval, Florent, et al.
(author)
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The Lyman alpha reference sample VI. Lyman alpha escape from the edge-on disk galaxy Mrk 1486
- 2016
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In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 587
-
Journal article (peer-reviewed)abstract
- Context. Recent numerical simulations suggest that the strength of the Lyman alpha (Ly alpha) line of star-forming disk galaxies strongly depends on the inclination at which they are observed: from edge-on to face-on, we expect to see a change from a strongly attenuated Ly alpha line to a strong Ly alpha emission line.Aims. We aim to understand how a strong Ly alpha emission line is able to escape from the low-redshift highly inclined (edge-on) disk galaxy Mrk 1486 (z similar to 0.0338). To our knowledge, this work is the first observational study of Ly alpha transport inside an edge-on disk galaxy.Methods. Using a large set of HST imaging and spectroscopic data, we investigated the interstellar medium (ISM) structure and the dominant source of Ly alpha radiation inside Mrk 1486. Moreover, using a 3D Monte Carlo Ly alpha radiation transfer code, we studied the radiative transfer of Ly alpha and UV continuum photons inside a 3D geometry of neutral hydrogen (HI) and dust that models the ISM structure at the galaxy center. Our numerical simulations predicted the Ly alpha line profile that we then compared to the one observed in the HST/COS spectrum of Mrk 1486.Results. While a pronounced Ly alpha absorption line emerges from the disk of Mrk 1486, very extended Ly alpha structures are observed at large radii from the galaxy center: a large Ly alpha-halo and two very bright Ly alpha regions located slightly above and below the disk plane. The analysis of IFU H alpha spectroscopic data of Mrk 1486 indicates the presence of two bipolar outflowing halos of HI gas at the same location as these two bright Ly alpha regions. Comparing different diagnostic diagrams (such as [OIII](5007)/H beta versus [OI](6300)/H alpha) to photo-and shock-ionization models, we find that the Ly alpha production of Mrk 1486 is dominated by photoionization inside the galaxy disk. From this perspective, our numerical simulations succeed in reproducing the strength and shape of the observed Ly alpha emission line of Mrk 1486 by assuming a scenario in which the Ly alpha photons are produced inside the galaxy disk, travel along the outflowing halos, and scatter on cool HI materials toward the observer.Conclusions. Extended bipolar galactic winds are frequently observed from star-forming disk galaxies. Given the advantage Ly alpha photons take of such outflowing HI materials to easily escape from Mrk 1486, this mechanism may explain the origin of strong Ly alpha emission lines frequently observed from highly inclined galaxies at high-redshift. This therefore challenges the robustness of the expected viewing-angle effect on the Ly alpha properties of star-forming disk galaxies.
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| 17. |
- Fejes, Andreas, et al.
(author)
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Adult Education and the Formation of Citizens : A critical Interrogation
- 2018. - 1
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Book (peer-reviewed)abstract
- Adult Education and the Formation of Citizens turns attention towards normative claims about who adults should become through education, and what capacities and skills adults need to develop to become included in society as ‘full’ citizens. Through these debates, adults are construed as not yet citizens, despite already being citizens in a formal sense; this book problematises such regimes of truth and their related notions of the possibilities and impossibilities of adult education and citizenship. Drawing on empirical examples from the two main adult education institutions in Sweden, folk high schools and municipal adult education, it argues that, through current regimes of truth, these institutions become spaces for the re-shaping of the "abnormal" citizen. The book suggests that only certain futures of citizenship and its educational provision are made possible, while other futures are ignored or even made impossible to imagine. Offering a unique focus on critically problematising the role of adult education in relation to the fostering and shaping of citizens, the book addresses the important contemporary challenges of the role of adult education in a time of migration.Adult Education and the Formation of Citizens will be of great interest to academics, researchers and postgraduate students in the fields of adult education, lifelong learning and education. "Citizenship education is typically viewed as an unproblematic ‘good’ thing that empowers adults to participate fully in a democratic society. In this fascinating volume, Andreas Fejes and his colleagues outline the normative nature of citizenship education and challenge the idea that those not receiving such education are somehow ‘less than’ full citizens. Drawing on Foucault’s ideas they analyse conceptions of citizenship and practices of education as regimes of truth, and explore the ways that power relations shape citizenship as a process of inclusion and exclusion." Stephen Brookfield, John Ireland Endowed Chair, University of St. Thomas, Minneapolis-St. Paul, USA."Never has there been time when we need more strategic adult education oriented to formal, nonformal and informal sectors, to address the ongoing crises in citizenship and global civil society. In putting adult education at the centre, the authors not only fill a deep gap in citizenship education, they push for more careful consideration of the many challenges citizens face globally. This book is a must read for those of us interested in the discourses of citizenship, adult education, and global civil society." Leona M. English is Professor of Adult Education at St. Francis Xavier University, Canada.
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| 18. |
- Fejes, Andreas, 1977-, et al.
(author)
-
Adult Education and the Formation of Citizens : A critical Interrogation
- 2018
-
Book (peer-reviewed)abstract
- Adult Education and the Formation of Citizens turns attention towards normative claims about who adults should become through education, and what capacities and skills adults need to develop to become included in society as ‘full’ citizens. Through these debates, adults are construed as not yet citizens, despite already being citizens in a formal sense; this book problematises such regimes of truth and their related notions of the possibilities and impossibilities of adult education and citizenship.Drawing on empirical examples from the two main adult education institutions in Sweden, folk high schools and municipal adult education, it argues that, through current regimes of truth, these institutions become spaces for the re-shaping of the "abnormal" citizen. The book suggests that only certain futures of citizenship and its educational provision are made possible, while other futures are ignored or even made impossible to imagine. Offering a unique focus on critically problematising the role of adult education in relation to the fostering and shaping of citizens, the book addresses the important contemporary challenges of the role of adult education in a time of migration.Adult Education and the Formation of Citizens will be of great interest to academics, researchers and postgraduate students in the fields of adult education, lifelong learning and education.
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| 19. |
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| 20. |
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| 21. |
- Fejes, Andreas, 1977-, et al.
(author)
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Individualisation in Swedish adult education and the shaping of neo-liberal subjectivities
- 2018
-
In: Scandinavian Journal of Educational Research. - : Routledge. - 0031-3831 .- 1470-1170. ; 62:3, s. 461-473
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Journal article (peer-reviewed)abstract
- In this article we have analysed the ways a discourse on individualisation is taking shape within adult education in Sweden, how it operates, and what effects it has in terms of shaping student subjectivity. Drawing on a post-structural theorisation we analyse interviews with teachers and students in municipal adult education (MAE) and folk high schools (FHS). The analysis illustrates how both institutions contribute to the shaping of individualised subjectivities, although differently. At the end, a general question is raised about what happens with the democratic function of adult education in general, when a discourse on individualisation operates in the ways described, and more specifically, asks what is happening to FHS as an educational practice, that upholds its self-image as a last bastion of a collective notion of learning and subjectivity, and nurturing an educational practice of learning democracy?
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| 22. |
- Fejes, Andreas, et al.
(author)
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Individualisation in the citizen formation in Swedish adult education
- 2016
-
Conference paper (peer-reviewed)abstract
- In this article we have analysed the ways a discourse on individualisation is taking shape within adult education in Sweden, how it operates, and what effects it has in terms of shaping student subjectivity. Drawing on a post-structural theorisation we analyse interviews with teachers and students in municipal adult education (MAE) and folk high schools (FHS). The analysis illustrates how both institutions contribute to the shaping of individualised subjectivities, although differently. At the end, a general question is raised about what happens with the democratic function of adult education in general, when a discourse on individualisation operates in the ways described, and more specifically, asks what is happening to FHS as an educational practice, that upholds its self-image as a last bastion of a collective notion of learning and subjectivity, and nurturing an educational practice of learning democracy?
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| 23. |
- Fejes, Andreas, et al.
(author)
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Individualisering genom det kollektiva i svensk folkhögskola
- 2015
-
Conference paper (other academic/artistic)abstract
- The aim of this paper presentation is to identify how the principles of democracy and the market are played out in Swedish adult education. More specifically, we focus on how collective and individually oriented notions of what it means to be a citizen, shape student subjectivity. By focusing on both formal adult education (municipal adult education) and non-formal adult education (folk high schools) we wish to illustrate how these principles are mobilized differently, thus shaping different kinds of citizen subjectivities. Drawing on a post structural theorization inspired by the work of Michel Foucault, we analyse interviews with students and teachers at one school for municipal adult education, as well as one folk high school. Our analysis illustrates how an individually oriented citizen is shaped through discourses mobilized in both settings. However, in the folk highs school, individualization is shaped through discourses on collectivization. We argue that such shaping are in line with neoliberal forms of governance.
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| 24. |
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| 25. |
- Fejes, Andreas, 1977-, et al.
(author)
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Medborgarskap och utbildning för vuxna : Om Komvux, folkhögskola och medborgarskapandets praktiker
- 2018
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Book (other academic/artistic)abstract
- Utbildning för vuxna lyfts ofta fram som en lösning på en rad aktuella samhällsutmaningar. Allt från miljöfrågor till den mer övergripande målsättningen att skapa ekonomisk tillväxt. Men vuxenutbildningen har också ett tydligt demokratiskt och medborgerligt uppdrag och i denna bok utforskas detta medborgerliga uppdrag utifrån dess grundläggande antaganden, verkningssätt och konsekvenser. Det är en berättelse som å ena sidan handlar om inkludering, erkännande, framtidstro och realiserandet av drömmar, å andra sidan om normalisering, exkludering och villkorad gemenskap. Med andra ord, att bli en god samhällsmedborgare handlar inte enbart om att tillägna sig relevant kunskap. Det är lika mycket en process av att forma en person – dennes självuppfattning och -uttryck – vilket öppnar upp för en diskussion om gränserna för vuxenutbildningens uppdrag.
Boken vänder sig till studenter inom lärarutbildningarna, yrkes- verksamma lärare, skolledare, studievägledare, folkbildare och politiker som intresserar sig för frågor om vuxenutbildningens och folkbildningens roll i att fostra framtida medborgare.
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| 26. |
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| 27. |
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| 28. |
- Gao, Xiang, et al.
(author)
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Effects of GIP on regional blood flow during normoglycemia and hyperglycemia in anesthetized rats
- 2018
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In: Physiological Reports. - : Wiley. - 2051-817X. ; 6:8
-
Journal article (peer-reviewed)abstract
- The incretin hormone glucose-dependent insulinotropic polypeptide (GIP) potentiates glucose-stimulated insulin secretion, and affects -cell turnover. This study aimed at evaluating if some of the beneficial effects of GIP on glucose homeostasis can be explained by modulation of islet blood flow. Anesthetized Sprague-Dawley rats were infused intravenously with different doses of GIP (10, 20, or 60ng/kg*min) for 30min. Subsequent organ blood flow measurements were performed with microspheres. In separate animals, islets were perfused exvivo with GIP (10(-6)-10(-12)mol/L) during normo- and hyperglycemia and arteriolar responsiveness was recorded. The highest dose of GIP potentiated insulin secretion during hyperglycemia, but had no effect in normoglycemic rats. The highest GIP concentration decreased blood perfusion of whole pancreas, pancreatic islets, duodenum, colon, liver and kidneys. The decrease in blood flow was unaffected by ganglion blockade or adenosine receptor inhibition. In contrast to this, in single perfused islets GIP induced a dose-dependent arteriolar dilation. Thus, high doses of GIP exert a direct dilatory effect on islet arterioles in isolated islets, but induce a generalized vasoconstriction in splanchnic organs, including the whole pancreas and islets, invivo. The latter effect is unlikely to be mediated by adenosine, the autonomic nervous system, or endothelial mediators.
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| 29. |
- Grooten, Wilhelmus Johannes Andreas, et al.
(author)
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Reliability and validity of a novel Kinect-based software program for measuring posture, balance and side-bending
- 2018
-
In: BMC Musculoskeletal Disorders. - : Springer Science and Business Media LLC. - 1471-2474. ; 19:1
-
Journal article (peer-reviewed)abstract
- BACKGROUND: Clinical examinations are subjective and often show a low validity and reliability. Objective and highly reliable quantitative assessments are available in laboratory settings using 3D motion analysis, but these systems are too expensive to use for simple clinical examinations. Qinematic™ is an interactive movement analyses system based on the Kinect camera and is an easy-to-use clinical measurement system for assessing posture, balance and side-bending. The aim of the study was to test the test-retest the reliability and construct validity of Qinematic™ in a healthy population, and to calculate the minimal clinical differences for the variables of interest. A further aim was to identify the discriminative validity of Qinematic™ in people with low-back pain (LBP).METHODS: We performed a test-retest reliability study (n = 37) with around 1 week between the occasions, a construct validity study (n = 30) in which Qinematic™ was tested against a 3D motion capture system, and a discriminative validity study, in which a group of people with LBP (n = 20) was compared to healthy controls (n = 17). We tested a large range of psychometric properties of 18 variables in three sections: posture (head and pelvic position, weight distribution), balance (sway area and velocity in single- and double-leg stance), and side-bending.RESULTS: The majority of the variables in the posture and balance sections, showed poor/fair reliability (ICC < 0.4) and poor/fair validity (Spearman <0.4), with significant differences between occasions, between Qinematic™ and the 3D-motion capture system. In the clinical study, Qinematic™ did not differ between people with LPB and healthy for these variables. For one variable, side-bending to the left, there was excellent reliability (ICC =0.898), excellent validity (r = 0.943), and Qinematic™ could differentiate between LPB and healthy individuals (p = 0.012).CONCLUSION: This paper shows that a novel software program (Qinematic™) based on the Kinect camera for measuring balance, posture and side-bending has poor psychometric properties, indicating that the variables on balance and posture should not be used for monitoring individual changes over time or in research. Future research on the dynamic tasks of Qinematic™ is warranted.
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| 30. |
- Guaita, Lucia, et al.
(author)
-
The Lyman alpha reference sample IV. Morphology at low and high redshift
- 2015
-
In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 576
-
Journal article (peer-reviewed)abstract
- Context. The transport of Ly alpha photons in galaxies is a complex process and the conditions under which Ly alpha photons manage to escape from certain galaxies is still under investigation. The Lyman alpha reference sample (LARS) is a sample of 14 local star-forming galaxies, designed to study Ly alpha in detail and relate it to rest-frame UV and optical emission. Aims. With the aim of identifying rest-frame UV and optical properties, which are typical of Ly alpha emitters (LAEs, galaxies with EW(Ly alpha) > 20 angstrom) at both low and high redshift, we investigated the morphological properties of the LARS galaxies, in particular the ones that exhibit intense Ly alpha radiation. Methods. We measured sizes and morphological parameters in the continuum, Ly alpha, and Ha images. We studied morphology by using the Gini coefficient vs. M20 and asymmetry vs. concentration diagrams. We then simulated LARS galaxies at z similar to 2 and 5.7, performing the same morphological measurements. We also investigated the detectability of LARS galaxies in current deep field observations. The subsample of LAEs within LARS (LARS-LAEs) was stacked to provide a comparison to stacking studies performed at high redshift. Results. LARS galaxies have continuum size, stellar mass, and rest-frame absolute magnitude typical of Lyman break analogues in the local Universe and also similar to 2 < z < 3 star-forming galaxies and massive LAEs. LARS optical morphology is consistent with the one of merging systems, and irregular or starburst galaxies. For the first time we quantify the morphology in Ly alpha images: even if a variety of intrinsic conditions of the interstellar medium can favour the escape of Ly alpha photons, LARS-LAEs appear small in the continuum, and their Ly alpha is compact. LARS galaxies tend to be more extended in Ly alpha than in the rest-frame UV. It means that Ly alpha photons escape by forming haloes around HII regions of LARS galaxies. Conclusions. The stack of LARS-LAE Ly alpha images is peaked in the centre, indicating that the conditions, which make a galaxy an LAE, tend to produce a concentrated surface brightness profile. On the other hand, the stack of all LARS galaxies is shallower and more extended. This can be caused by the variety of dust and HI amount and distribution, which produces a more complex, patchy, and extended profile, like the one observed for Lyman break galaxies that can contribute to the stack. We cannot identify a single morphological property that controls whether a galaxy emits a net positive Ly alpha flux. However, the LARS-LAEs have continuum properties consistent with merging systems.
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| 31. |
- Micheva, Genoveva, et al.
(author)
-
The Lyman Alpha Reference Sample IX. Revelations from deep surface photometry
- 2018
-
In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 615
-
Journal article (peer-reviewed)abstract
- Context. The Lyman alpha Reference Sample (LARS) of 14 star-forming galaxies offers a wealth of insight into the workings of these local analogs to high-redshift star-forming galaxies. The sample has been well-studied in terms of Ly alpha and other emission line properties, such as H I mass, gas kinematics, and morphology.Aims. We analyze deep surface photometry of the LARS sample in UBIK broadband imaging obtained at the Nordic Optical Telescope and the Canada-France-Hawaii Telescope, and juxtaposition their derived properties with a sample of local high-redshift galaxy analogs, namely, with blue compact galaxies (BCGs).Methods. We construct radial surface brightness and color profiles with both elliptical and isophotal integration, as well as RGB images, deep contours, color maps, a burst fraction estimate, and a radial mass-to-light ratio profile for each LARS galaxy. Standard morphological parameters like asymmetry, clumpiness, the Gini and M20 coefficients are also obtained and analyzed, as well as isophotal asymmetry profiles for each galaxy. In this context, we compare the LARS sample to the properties of the BCG sample and highlight the differences.Results. Several of these diagnostics indicate that the LARS galaxies have highly disturbed morphologies even at the level of the faintest outer isophotes, with no hint at a regular underlying population, as found in many BCG sample galaxies. The ground-based photometry reaches isophotes down to similar to 28 mag arcsec(-2), while the space-based data reach only similar to 26 mag arcsec(-2). The ground-based observations therefore reveal previously unexplored isophotes of the LARS galaxies. The burst fraction estimate suggests a spatially more extended burst region in LARS than in the BCGs. Comparison to stellar evolutionary models in color-color diagrams reveals complex behavior of the radial color profiles, often inconsistent with a single stellar population of any age and metallicity, but instead suggesting a mixture of at least two stellar populations with a typical young mass fraction in the range 0.1-1%.Conclusions. The galaxies in the LARS sample appear to be in earlier stages of a merger event compared to the BCGs. Standard morphological diagnostics like asymmetry, clumpiness, Gini and M20 coefficients cannot separate the two samples, although an isophotal asymmetry profile successfully captures the average difference in morphology. These morphological diagnostics do not show any correlation with the equivalent width or the escape fraction of Lyman Alpha.
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| 32. |
- Nikoleris, Nikos, et al.
(author)
-
CoolSim : Eliminating Traditional Cache Warming with Fast, Virtualized Profiling
- 2016
-
In: 2016 IEEE International Symposium On Performance Analysis Of Systems And Software ISPASS 2016. - 9781509019533 ; , s. 149-150
-
Conference paper (peer-reviewed)abstract
- Sampling (e.g., SMARTS and SimPoint) improves simulation performance by an order of magnitude or more through the reduction of large workloads into a small but representative sample. Virtualized fast-forwarding (e.g., FSA) speeds up simulation further by advancing execution at near-native speed between simulation points, making cache warming the critical limiting factor for simulation performance. CoolSim is an efficient simulation framework that eliminates cache warming. It collects sparse memory reuse information (MRI) while advancing between simulation points using virtualized fast-forwarding. During detailed simulation, a statistical cache model uses the previously acquired MRI to estimate the performance of the caches. CoolSim builds upon KVM and gem5 and runs 19x faster than the state-of-the-art sampled simulation. It estimates the CPI of the SPEC CPU2006 bench-marks with 3.62% error on average, across a wide range of cache sizes.
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| 33. |
- Nikoleris, Nikos, et al.
(author)
-
CoolSim : Statistical Techniques to Replace Cache Warming with Efficient, Virtualized Profiling
- 2016
-
In: Proceedings Of 2016 International Conference On Embedded Computer Systems. - : IEEE. - 9781509030767 ; , s. 106-115
-
Conference paper (peer-reviewed)abstract
- Simulation is an important part of the evaluation of next-generation computing systems. Detailed, cycle-accurate simulation, however, can be very slow when evaluating realistic workloads on modern microarchitectures. Sampled simulation (e.g., SMARTS and SimPoint) improves simulation performance by an order of magnitude or more through the reduction of large workloads into a small but representative sample. Additionally, the execution state just prior to a simulation sample can be stored into checkpoints, allowing for fast restoration and evaluation. Unfortunately, changes in software, architecture or fundamental pieces of the microarchitecture (e.g., hardware-software co-design) require checkpoint regeneration. The end result for co-design degenerates to creating checkpoints for each modification, a task checkpointing was designed to eliminate. Therefore, a solution is needed that allows for fast and accurate simulation, without the need for checkpoints. Virtualized fast-forwarding (VFF), an alternative to using checkpoints, allows for execution at near-native speed between simulation points. Warming the micro-architectural state prior to each simulation point, however, requires functional simulation, a costly operation for large caches (e.g., 8 M B). Simulating future systems with caches of many MBs can require warming of billions of instructions, dominating simulation time. This paper proposes CoolSim, an efficient simulation framework that eliminates cache warming. CoolSim uses VFF to advance between simulation points collecting at the same time sparse memory reuse information (MRI). The MRI is collected more than an order of magnitude faster than functional simulation. At the simulation point, detailed simulation with a statistical cache model is used to evaluate the design. The previously acquired MRI is used to estimate whether each memory request hits in the cache. The MRI is an architecturally independent metric and a single profile can be used in simulations of any size cache. We describe a prototype implementation of CoolSim based on KVM and gem5 running 19 x faster than the state-of-the-art sampled simulation, while it estimates the CPI of the SPEC CPU2006 benchmarks with 3.62% error on average, across a wide range of cache sizes.
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| 34. |
- Nikoleris, Nikos, et al.
(author)
-
Implementing Fast, Virtualized Profiling to Eliminate Cache Warming
- 2016
-
Reports (other academic/artistic)abstract
- Simulation is an important part of the evaluation of next-generation computing systems. Detailed, cycle-level simulation, however, can be very slow when evaluating realistic workloads on modern microarchitectures. Sampled simulation (e.g., SMARTS and SimPoint) improves simulation performance by an order of magnitude or more through the reduction of large workloads into a small but representative sample. Additionally, the execution state just prior to a simulation sample can be stored into checkpoints, allowing for fast restoration and evaluation. Unfortunately, changes in software, architecture or fundamental pieces of the microarchitecture (e.g., hardware-software co-design) require checkpoint regeneration. The end result for co-design degenerates to creating checkpoints for each modification, a task checkpointing was designed to eliminate. Therefore, a solution is needed that allows for fast and accurate simulation, without the need for checkpoints. Virtualized fast-forwarding proposals, like FSA, are an alternative to checkpoints that speed up sampled simulation by advancing the execution at near-native speed between simulation points. They rely, however, on functional simulation to warm the architectural state prior to each simulation point, a costly operation for moderately-sized last-level caches (e.g., above 8MB). Simulating future systems with DRAM caches of many GBs can require warming of billions of instructions, dominating the time for simulation and negating the benefit of virtualized fast-forwarding. This paper proposes CoolSim, an efficient simulation framework that eliminates cache warming. CoolSim advances between simulation points using virtualized fast-forwarding, while collecting sparse memory reuse information (MRI). The MRI is collected more than an order of magnitude faster than functional warming. At the simulation point, detailed simulation is used to evaluate the design while a statistical cache model uses the previously acquired MRI to estimate whether each memory request hits in the cache. The MRI is an architecturally independent metric and therefore a single profile can be used in simulations of any size cache. We describe a prototype implementation of CoolSim based on KVM and gem5 running 19x faster than the state-of-the-art sampled simulation, while it estimates the CPI of the SPEC CPU2006 benchmarks with 3.62% error on average, across a wide range of cache sizes.
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| 35. |
- Nord, Anette, et al.
(author)
-
The effect of a national web course "Help-Brain-Heart" as a supplemental learning tool before CPR training: : a cluster randomised trial.
- 2017
-
In: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine. - : Springer Science and Business Media LLC. - 1757-7241. ; 25:1
-
Journal article (peer-reviewed)abstract
- BACKGROUND: The effectiveness of cardiopulmonary resuscitation (CPR) learning methods is unclear. Our aim was to evaluate whether a web course before CPR training, teaching the importance of recognition of symptoms of stroke and acute myocardial infarction (AMI) and a healthy lifestyle, could influence not only theoretical knowledge but also practical CPR skills or willingness to act in a cardiac arrest situation.METHODS: Classes with 13-year-old students were randomised to CPR training only (control) or a web course plus CPR training (intervention). Data were collected (practical test and a questionnaire) directly after training and at 6 months. CPR skills were evaluated using a modified Cardiff test (12-48 points). Knowledge on stroke symptoms (0-7 points), AMI symptoms (0-9 points) and lifestyle factors (0-6 points), and willingness to act were assessed by the questionnaire. The primary endpoint was CPR skills at 6 months. CPR skills directly after training, willingness to act and theoretical knowledge were secondary endpoints. Training and measurements were performed from December 2013 to October 2014.RESULTS: Four hundred and thirty-two students were included in the analysis of practical skills and self-reported confidence. The mean score for CPR skills was 34 points after training (control, standard deviation [SD] 4.4; intervention, SD 4.0; not significant [NS]); and 32 points at 6 months for controls (SD 3.9) and 33 points for intervention (SD 4.2; NS). At 6 months, 73% (control) versus 80% (intervention; P = 0.05) stated they would do compressions and ventilation if a friend had a cardiac arrest, whereas 31% versus 34% (NS) would perform both if the victim was a stranger. One thousand, two hundred and thirty-two students were included in the analysis of theoretical knowledge; the mean scores at 6 months for the control and intervention groups were 2.8 (SD 1.6) and 3.2 (SD 1.4) points (P < 0.001) for stroke symptoms, 2.6 (SD 2.0) and 2.9 (SD 1.9) points (P = 0.008) for AMI symptoms and 3.2 (SD 1.2) and 3.4 (SD 1.0) points (P < 0.001) for lifestyle factors, respectively.DISCUSSION: Use of online learning platforms is a fast growing technology that increases the flexibility of learning in terms of location, time and is available before and after practical training.CONCLUSIONS: A web course before CPR training did not influence practical CPR skills or willingness to act, but improved the students' theoretical knowledge of AMI, stroke and lifestyle factors.
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| 36. |
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| 37. |
- Olson, Maria, 1969-, et al.
(author)
-
The formation of the willing citizen : Tracing reactive nihilism in late capitalist adult education
- 2018
-
In: Educational Philosophy and Theory. - : Taylor & Francis. - 0013-1857 .- 1469-5812. ; 50:1, s. 95-103
-
Journal article (peer-reviewed)abstract
- The role of education in citizen training has been well mapped out in youtheducation. What has been less studied is how this role comes into being inadult education. By providing illustrative empirical examples from a recentlycompleted study of adult students enrolled in adult education, this articleaims to offer a theoretical response to the question of the role of adulteducation in adult student citizen subjectivity formation. Taking on Diken’sconcept of ‘reactive nihilism’, we wish to make the following arguments. First,that citizen formation in adult education, when students are asked aboutit, is actualised as processes of re(dis)covery of will in order to be(come) asuccessful and happy citizen in society. Secondly, that these processes pointtowards a role of adult education as one where these formation processeswork in tandem with those of the reactive nihilists. This means that the citizenformation processes made possible in this educational site are those markedout by the desire to mobilise one’s will formation so that it adapts to theprevailing societal situation—that of late capitalism, which is a situation notconsidered by the adult students as possible to change.
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| 38. |
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| 39. |
-
Recognition of Prior Learning : Research from around the globe
- 2015. - 1
-
Editorial collection (peer-reviewed)abstract
- Recognition of prior learning (RPL) has emerged in recent decades as an important policy area and policy concept. It is a phenomenon with a certain variation in practices as well as contexts, concepts and conceptions. However, there is a basic idea about giving recognition to prior learning wherever and whenever learning has taken place. Such ideas can be ‘materialised’ in formal assessment systems providing the basis for recognition, as well as in informal processes where prior learning is made visible and gets recognition.This book provides a range of empirically and theoretically based contributions from different parts of the world where RPL, or an equivalent, is mobilised as part of educational practices for adults. Discussion in this area often takes place locally. This volume compiles different kinds of contributions to create a broader dialogue among scholars and practitioners, not only on the specific topic of RPL, but also on more general issues faced in educational research. It was originally published as a special issue of the International Journal of Lifelong Education.
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| 40. |
- Rivera-Thorsen, Thöger E., et al.
(author)
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THE LYMAN ALPHA REFERENCE SAMPLE. V. THE IMPACT OF NEUTRAL ISM KINEMATICS ANDGEOMETRY ON Lyα ESCAPE
- 2015
-
In: Astrophysical Journal. - 0004-637X .- 1538-4357. ; 805:14
-
Journal article (peer-reviewed)abstract
- We present high-resolution far-UV spectroscopy of the 14 galaxies of the Lyα Reference Sample; a sample of strongly star-forming galaxies at low redshifts (0.028 < z < 0.18). We compare the derived properties to global properties derived from multi-band imaging and 21 cm H i interferometry and single-dish observations, as well as archival optical SDSS spectra. Besides the Lyα line, the spectra contain a number of metal absorption features allowing us to probe the kinematics of the neutral ISM and evaluate the optical depth and and covering fraction of the neutral medium as a function of line of sight velocity. Furthermore, we show how this, in combination with the precise determination of systemic velocity and good Lyα spectra, can be used to distinguish a model in which separate clumps together fully cover the background source, from the "picket fence" model named by Heckman et al. We find that no one single effect dominates in governing Lyα radiative transfer and escape. Lyα escape in our sample coincides with a maximum velocity-binned covering fraction of 0.9 and bulk outflow velocities of 50 km s−1, although a number of galaxies show these characteristics and yet little or no Lyα escape. We find that Lyα peak velocities, where available, are not consistent with a strong backscattered component, but rather with a simpler model of an intrinsic emission line overlaid by a blueshifted absorption profile from the outflowing wind. Finally, we find a strong anticorrelation between Hα equivalent width and maximum velocity-binned covering factor, and propose a heuristic explanatory model.
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| 41. |
- Sadasivam, Logesh, et al.
(author)
-
Machine tool ability representation : A review
- 2018
-
In: Journal of Machine Engineering. - Wroclaw : Editorial Institution of Wrocaw Board of Scientific. - 1895-7595 .- 2391-8071. ; 18:2, s. 5-16
-
Journal article (peer-reviewed)abstract
- Smart manufacturing and predictive maintenance are current trends in the manufacturing industry. However, the holistic understanding of the machine tool health condition in terms of accuracy, functions, process and availability is still unclear. This uncertainty renders the development of models and the data acquisition related to machine tool health condition ineffective. This paper proposes the term machine tool ability as an interconnection between the accuracy, functions, the process and the availability to overcome the lack of the holistic understanding of the machine tool. This will facilitate the further development of qualitative or quantitative methods as well as models. The research highlights the challenges and gaps to understand the machine tool ability.
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| 42. |
- Sandberg, Andreas, et al.
(author)
-
Full speed ahead : Detailed architectural simulation at near-native speed
- 2015
-
In: Proc. 18th International Symposium on Workload Characterization. - : IEEE Computer Society. - 9781509000883 ; , s. 183-192
-
Conference paper (peer-reviewed)abstract
- Cycle-level microarchitectural simulation is the defacto standard to estimate performance of next-generation platforms. Unfortunately, the level of detail needed for accurate simulation requires complex, and therefore slow, simulation models that run at speeds that are thousands of times slower than native execution. With the introduction of sampled simulation, it has become possible to simulate only the key, representative portions of a workload in a reasonable amount of time and reliably estimate its overall performance. These sampling methodologies provide the ability to identify regions for detailed execution, and through microarchitectural state checkpointing, one can quickly and easily determine the performance characteristics of a workload for a variety of microarchitectural changes. While this strategy of sampling simulations to generate checkpoints performs well for static applications, more complex scenarios involving hardware-software co-design (such as co-optimizing both a Java virtual machine and the microarchitecture it is running on) cause this methodology to break down, as new microarchitectural checkpoints are needed for each memory hierarchy configuration and software version. Solutions are therefore needed to enable fast and accurate simulation that also address the needs of hardware-software co-design and exploration. In this work we present a methodology to enhance checkpoint-based sampled simulation. Our solution integrates hardware virtualization to provide near-native speed, virtualized fast-forwarding to regions of interest, and parallel detailed simulation. However, as we cannot warm the simulated caches during virtualized fast-forwarding, we develop a novel approach to estimate the error introduced by limited cache warming, through the use of optimistic and pessimistic warming simulations. Using virtualized fast-forwarding (which operates at 90% of native speed on average), we demonstrate a parallel sampling simulator that can be used to accurately estimate the IPC of standard workloads with an average error of 2.2% while still reaching an execution rate of 2.0 GIPS (63% of native) on average. Additionally, we demonstrate that our parallelization strategy scales almost linearly and simulates one core at up to 93% of its native execution rate, 19,000x faster than detailed simulation, while using 8 cores.
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| 43. |
- Sandberg, Andreas, 1985-
(author)
-
Observing Lyman alpha emitters - How does Lyman alpha escape from galaxies?
- 2016
-
Doctoral thesis (other academic/artistic)abstract
- The Lyman alpha (Lyα) emission line has grown to become one of the most successful tools for finding galaxies at high redshift. At redshifts corresponding to the early cosmic times of reionization and primeval galaxy formation, the wavelength of Lyα is still accessible with ground-based facilities. Lyα is a resonance line which undergoes a complicated radiative transfer process through the neutral gas inside galaxies. This process is still not fully understood. The precise distribution and kinematics of stars, gas and dust all seem to affect the amount of Lyα that eventually escapes the galaxy. Observational studies of Lyα emitting galaxies are necessary for understanding this process in detail.From previous observations and simulations, it is evident that outflows of neutral gas can facilitate the escape of Lyα photons, as the Doppler effect shifts the frequency out of resonance. In Paper I we explore the connection between Lyα escape and outflows of neutral gas as measured with the Na D absorption feature in two nearby Lyα emitting galaxies. We find suprisingly little evidence for such a connection, and speculate how the Na D absorption is perhaps not measuring the velocity of the gas which is the most important for Lyα escape.Papers II and III address LARS - the Lyman Alpha Reference Sample - a project in which 14 nearby galaxies and their Lyα emission are studied in detail using the Hubble Space Telescope. The two papers describe how we directly image the Lyα emission and absorption in these galaxies, and relate it to their physical properties. We find that Lyα escape is more probable in galaxies with younger age, and lower mass, dust content and instantaneous star formation rate, whereas the total Lyα luminosity appears to be independent of these factors.Papers IV and V then turn to higher redshifts, exploring Lyα and Lyman Continuum escape at z ∼ 2. In Paper IV we find 25 Lyα-emitting galaxies (LAEs) using the photometric narrow-band technique, and we explore their multi-wavelength properties. Our results are well in line with similar studies at this redshift. We also find several luminous infrared galaxies (LIRGs) in the sample, which may seem surprising given their high dust content, but we also review similar previous findings in the literature.Paper V describes the method of using Hα-emitting galaxies (HAEs) in order to accurately ascertain the Lyman Continuum escape fraction from a galaxy population, a number which is crucial for the understanding of the role of galaxies during the epoch of reionization. An Hα-selected sample is less biased towards dust-free systems than UV-selected samples, which are typically used for this type of study. We also use the method on 10 strongly clustered HAEs and constrain the Lyman Continuum escape fraction to <24%, but stress that this number is strongly affected by cosmic variance and that further studies of HAEs could provide very robust constraints on the escape fraction.
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| 44. |
- Sandberg, Andreas, et al.
(author)
-
Trident : A three-pronged galaxy survey I. Lyman alpha emitting galaxies at z similar to 2 in GOODS North
- 2015
-
In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 580
-
Journal article (peer-reviewed)abstract
- Context: Lyman alpha (Ly alpha) emitting galaxies (LAEs) are used to probe the distant universe and are therefore important for galaxy evolution studies and for providing clues to the nature of the epoch of reionization. However, the exact circumstances under which Lya escapes a galaxy are still not fully understood. Aims. The Trident project is designed to simultaneously examine Ly alpha, H alpha, and Lyman continuum emission from galaxies at redshift z similar to 2, thus linking these three aspects of ionizing radiation in galaxies. In this paper, we outline the strategy of this project and examine the properties of LAEs in the GOODS North field.Methods: We performed a narrowband LAE survey in GOODS North using existing filters and two custom made filters at the Nordic Optical Telescope with MOSCA. We use complementary broadband archival data in the field to make a careful candidate selection and perform optical to near-IR SED fitting. We also estimate far-IR luminosities by matching our candidates to detections in Spitzer/MIPS 24 mu m and Herschel/PACS catalogues. Results. We find a total of 25 LAE candidates, probing mainly the bright end of the LAE luminosity function with L-Ly alpha similar to 1-15 x 10(42) erg s(-1). They display a range of masses of similar to 0.5-50x10(9) M-circle dot, and average ages from a few tens of Myr to 1 Gyr when assuming a constant star formation history. The majority of our candidates also show signs of recent elevated star formation. Three candidates have counterparts in the GOODS-Herschel far-IR catalogue, with luminosities consistent with ultra-luminous infrared galaxies (ULIRGs).Conclusions: The wide range of parameters derived from our SED fitting, as well as part of our sample being detected as ULIRGs, seems to indicate that at these Ly alpha luminosities, LAEs do not necessarily have to be young dwarfs, and that a lack of dust is not required for Ly alpha to escape.
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| 45. |
- Sandberg, Fredrik, et al.
(author)
-
Adult education as a heterotopia of deviation : a dwelling for the abnormal citizen
- 2016
-
In: Adult Education Quarterly. - : Sage Publications. - 0741-7136 .- 1552-3047. ; 66:2, s. 103-119
-
Journal article (peer-reviewed)abstract
- We argue that municipal adult education (MAE) can be seen as a place for displaced and abnormal citizens to gain temporary stability, enabling their shaping into desirable subjects. Drawing on a poststructural discursive analysis, we analyse policy texts and interviews with teachers and students. Our analysis illustrates how two distinct student subjectivities are shaped: the rootless, unmotivated and irresponsible student and the responsible, motivated and goal-oriented one. The difference is that the latter of these subjectivities is positioned as desirable. MAE provides a temporary place in time, a heterotopia of deviation, allowing students to escape precarious employment. The heterotopia places the students in a positive utopian dream of the future. A utopia is not a real place, and what is to become of the students after finishing MAE is not determined; the students themselves should shape it. If they fail, in line with a neoliberal governmentality, it is their own fault.
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| 46. |
- Silberzahn, Raphael, et al.
(author)
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Many analysts, one dataset : Making transparent how variations in analytical choices affect results
- 2018
-
In: Advances in Methods and Practices in Psychological Science. - : Sage Publications. - 2515-2459 .- 2515-2467. ; 1:3, s. 337-356
-
Journal article (peer-reviewed)abstract
- Twenty-nine teams involving 61 analysts used the same dataset to address the same research question: whether soccer referees are more likely to give red cards to dark skin toned players than light skin toned players. Analytic approaches varied widely across teams, and estimated effect sizes ranged from 0.89 to 2.93 in odds ratio units, with a median of 1.31. Twenty teams (69%) found a statistically significant positive effect and nine teams (31%) observed a non-significant relationship. Overall 29 differentanalyses used 21 unique combinations of covariates. We found that neither analysts' prior beliefs about the effect, nor their level of expertise, nor peer-reviewed quality of analysis readily explained variation in analysis outcomes. This suggests that significant variation in the results of analyses of complex data may be difficult to avoid, even by experts with honest intentions. Crowdsourcing data analysis, a strategy by which numerous research teams are recruited to simultaneously investigate the same research question, makes transparent how defensible, yet subjective analytic choices influence research results.
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| 47. |
- Skriver Hansen, Andreas, 1983, et al.
(author)
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Skolbäcken: Som ett rinnande vatten? Utvärdering av Sportfiskarnas satsning på naturvårdsinriktad utomhuspedagogik
- 2018
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Reports (other academic/artistic)abstract
- Hur kan vi få barn och unga att engagera sig i fiske- och vattenvård, samtidigt förmedla kunskap om grundläggande ekologiska samband och därtill skapa förutsättningar för positiva naturupplevelser under skoltid? Sportfiskarnas pedagogiska projekt Skolbäcken tar sikte på alla dessa aspekter. Vi är övertygande om projektets styrkor, annars hade vi inte drivit och utvecklat det under årens lopp. Men för att bättre veta om vi är på rätt väg, och för att få insikter i olika typer förbättringsmöjligheter, har vi under våren 2018 låtit projektet utvärderas av forskare vid Göteborgs universitet. Utvärderingen är gjord på uppdrag av Sportfiskarna och har genomförts av Andreas Skriver Hansen och Mattias Sandberg, som båda är forskare och lärare i kulturgeografi vid Göteborgs universitet. Utvärderingen har fokuserat på tre huvudgrupper inom Skolbäcken: elever, klasslärare och Sportfiskarnas pedagoger. Projektet Skolbäcken riktar sig framförallt mot elever i årskurs 1-6 med syfte att väcka deras intresse för fiske- och vattenvård. Sedan starten av projektet 2016 har Sportfiskarna tagit med tusentals elever till olika typer av vattendrag där de har fått prova på praktisk natur- och fiskevård. Detta gör Skolbäcken till den mest omfattande pedagogiska satsningen på natur- och fiskevård i landet. Skolbäcken har haft fokus på tre huvudsakliga lärandemiljöer: is, våtmark och rinnande vatten. På is får elever prova på att bygga risvasar som gynnar lek hos abborre och mört. Här får de också lära sig grundläggande issäkerhet, och att leka abborre och mört förstås. Andra elever får prova på att anlägga och restaurera våtmarker i syfte att skapa lekplatser för gäddbeståndet som minskat drastiskt utmed Östersjökusten. Eleverna får titta, klappa och till med att pussa gäddorna som vägs och mäts innan de får vandra vidare för att leka. Rinnande vatten är den tredje lärandemiljön och här får eleverna lägga ut sten och död ved i bäckar för att skapa lekbäddar och skyddade partier för öringen. De får också se hur det går till när vi provfiskar med el. Avslutningsvis får eleverna komma på återbesök. Syftet med återbesöket är att låta eleverna ta del av vad de åstadkommit vid vattendragen samt att befästa de kunskaper som Skolbäcken förmedlar. Erfarenheterna från Skolbäcken är goda och mycket tyder på att medverkande klasslärare och elever uppskattar att delta. Mot bakgrund av projektets omfattning i termer av personal, medverkande skolor och elever, är det hög tid att granska projektet och dess måluppfyllelse i termer av lärande och ökat intresse för fiske- och vattenvård hos barn och unga. Denna utvärdering är gjord på Sportfiskarnas uppdrag och syftar framförallt till att genomlysa Skolbäckens måluppfyllelse, dokumentera erfarenheterna från projektet samt att sprida kunskap om möjligheterna med naturvårdsinriktad utomhuspedagogik. Även om rapporten främst riktas mot förbundets anställda och medlemar, finansiärer och samarbetspartners, finns det kunskaper och erfarenheter att hämta för alla som är intresserade av naturvård, utomhuspedagogik och friluftsliv på myndigheter, inom ideella organisationer, grundsskolor och högre utbildning.
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| 48. |
- Svensson, Andreas, et al.
(author)
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Sequestering of damage-associated molecular-patterns (DAMPs) : a possible mechanism affecting the immune stimulating properties of aluminium adjuvants
- 2017
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In: Immunologic research. - : Springer. - 0257-277X .- 1559-0755. ; 65:6, s. 1164-1175
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Journal article (peer-reviewed)abstract
- Aluminium based adjuvants (ABAs) have been used in human and veterinary vaccines for decades and for a long time the adjuvant properties were believed to be mediated by an antigen depot at the injection site, prolonging antigen exposure to the immune system. The depot hypothesis is today more or less abandoned, and instead replaced by the assumption that ABAs induce an inflammation at the injection site. Induction of an inflammatory response is consistent with immune activation initiated by recognition of molecular patterns associated with danger or damage (DAMPs), and the latter are derived from endogenous molecules that normally reside intracellularly. When extracellularly expressed, because of damage, stress or cell death, a sterile inflammation is induced. In this paper, we report the induction of DAMP release by viable cells after phagocytosis of aluminium based adjuvants. Two of the most commonly used ABAs in pharmaceutical vaccine formulations, aluminium oxyhydroxide and aluminium hydroxyphosphate, induced a vigorous extracellular expression of the two DAMP molecules calreticulin and HMGB1. Concomitantly, extracellular adjuvant particles adsorbed the DAMP molecules released by the cells whereas IL-1, a previously reported inflammatory mediator induced by ABAs, was not absorbed by the adjuvants. Induction of extracellular expression of the two DAMP molecules was more prominent using aluminium hydroxyphosphate compared to aluminium oxyhydroxide, whereas the extracellular adsorption of the DAMP molecules was more pronounced with the latter. Furthermore, is hypothesised how induction of DAMP expression by ABAs and their concomitant adsorption by extra cellular adjuvants may affect the inflammatory properties of ABAs.
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| 49. |
- Xochelli, Aliki, et al.
(author)
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Chronic Lymphocytic Leukemia with Mutated IGHV4-34 Receptors : Shared and Distinct Immunogenetic Features and Clinical Outcomes
- 2017
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In: Clinical Cancer Research. - 1078-0432 .- 1557-3265. ; 23:17, s. 5292-5301
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Journal article (peer-reviewed)abstract
- Purpose: We sought to investigate whether B cell receptor immunoglobulin (BcR IG) stereotypy is associated with particular clinicobiological features among chronic lymphocytic leukemia (CLL) patients expressing mutated BcR IG (M-CLL) encoded by the IGHV4-34 gene, and also ascertain whether these associations could refine prognostication. Experimental Design: In a series of 19,907 CLL cases with available immunogenetic information, we identified 339 IGHV4-34expressing cases assigned to one of the four largest stereotyped M-CLL subsets, namely subsets #4, #16, #29 and #201, and investigated in detail their clinicobiological characteristics and disease outcomes. Results: We identified shared and subset-specific patterns of somatic hypermutation (SHM) among patients assigned to these subsets. The greatest similarity was observed between subsets #4 and #16, both including IgG-switched cases (IgG-CLL). In contrast, the least similarity was detected between subsets #16 and #201, the latter concerning IgM/D-expressing CLL. Significant differences between subsets also involved disease stage at diagnosis and the presence of specific genomic aberrations. IgG subsets #4 and #16 emerged as particularly indolent with a significantly (P < 0.05) longer time-to-first-treatment (TTFT; median TTFT: not yet reached) compared with the IgM/D subsets #29 and #201 (median TTFT: 11 and 12 years, respectively). Conclusions: Our findings support the notion that BcR IG stereotypy further refines prognostication in CLL, superseding the immunogenetic distinction based solely on SHM load. In addition, the observed distinct genetic aberration landscapes and clinical heterogeneity suggest that not all M-CLL cases are equal, prompting further research into the underlying biological background with the ultimate aim of tailored patient management.
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