| 1. |
- Eriksson, Frida, 1986, et al.
(författare)
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Interpretative and predictive modelling of Joint European Torus collisionality scans
- 2019
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Ingår i: Plasma Physics and Controlled Fusion. - : Institute of Physics Publishing (IOPP). - 0741-3335 .- 1361-6587. ; 61:11
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Tidskriftsartikel (refereegranskat)abstract
- Transport modelling of Joint European Torus (JET) dimensionless collisionality scaling experiments in various operational scenarios is presented. Interpretative simulations at a fixed radial position are combined with predictive JETTO simulations of temperatures and densities, using the TGLF transport model. The model includes electromagnetic effects and collisions as well as (E)over-right-arrow x (b)over-right-arrow shear in Miller geometry. Focus is on particle transport and the role of the neutral beam injection (NBI) particle source for the density peaking. The experimental 3-point collisionality scans include L-mode, and H-mode (D and H and higher beta D plasma) plasmas in a total of 12 discharges. Experimental results presented in (Tala et al 2017 44th EPS Conf.) indicate that for the H-mode scans, the NBI particle source plays an important role for the density peaking, whereas for the L-mode scan, the influence of the particle source is small. In general, both the interpretative and predictive transport simulations support the experimental conclusions on the role of the NBI particle source for the 12 JET discharges.
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| 2. |
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| 3. |
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| 4. |
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| 5. |
- Joffrin, E., et al.
(författare)
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Overview of the JET preparation for deuterium-tritium operation with the ITER like-wall
- 2019
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Ingår i: Nuclear Fusion. - : IOP Publishing. - 1741-4326 .- 0029-5515. ; 59:11
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Forskningsöversikt (refereegranskat)abstract
- For the past several years, the JET scientific programme (Pamela et al 2007 Fusion Eng. Des. 82 590) has been engaged in a multi-campaign effort, including experiments in D, H and T, leading up to 2020 and the first experiments with 50%/50% D-T mixtures since 1997 and the first ever D-T plasmas with the ITER mix of plasma-facing component materials. For this purpose, a concerted physics and technology programme was launched with a view to prepare the D-T campaign (DTE2). This paper addresses the key elements developed by the JET programme directly contributing to the D-T preparation. This intense preparation includes the review of the physics basis for the D-T operational scenarios, including the fusion power predictions through first principle and integrated modelling, and the impact of isotopes in the operation and physics of D-T plasmas (thermal and particle transport, high confinement mode (H-mode) access, Be and W erosion, fuel recovery, etc). This effort also requires improving several aspects of plasma operation for DTE2, such as real time control schemes, heat load control, disruption avoidance and a mitigation system (including the installation of a new shattered pellet injector), novel ion cyclotron resonance heating schemes (such as the three-ions scheme), new diagnostics (neutron camera and spectrometer, active Alfven eigenmode antennas, neutral gauges, radiation hard imaging systems...) and the calibration of the JET neutron diagnostics at 14 MeV for accurate fusion power measurement. The active preparation of JET for the 2020 D-T campaign provides an incomparable source of information and a basis for the future D-T operation of ITER, and it is also foreseen that a large number of key physics issues will be addressed in support of burning plasmas.
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| 6. |
- Rajan, S., et al.
(författare)
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The Niebauer-Cutter prosthesis in excision arthroplasty of the trapezium
- 1982
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Ingår i: Journal of Hand Surgery, European Volume. - : Sage Publications. - 1753-1934 .- 2043-6289. ; 14:3, s. 295-303
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Tidskriftsartikel (refereegranskat)abstract
- Sixteen patients had excision arthroplasty of the trapezium, using the Niebauer-Cutter prosthesis. The average period of postoperative follow-up was thirteen months. All patients had severe preoperative disabilities and the majority were relieved from resting pain and pain during active use of their hands. The postoperative range of motion with regard to the palmar and radial abduction was found to be satisfactory, while varying degrees of limitation of circumduction was the rule. There was no correlation between the patients' own judgment of the postoperative benefits and the objectively measured range of motion. One patient had a luxation of the prosthesis, while another had a subluxation when opposing the thumb. This frequency of luxation/subluxation seems to be less than that experienced with the other common type of prosthesis, the Swanson prosthesis. Although it is obvious that the ideal prosthesis for treatment of disabilities in the carpometacarpal joint of the thumb is still not available, it was concluded that the Niebauer-Cutter prosthesis is the best choice at the present.
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| 7. |
- Rubboli, Andrea, et al.
(författare)
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Esperienza iniziale sulluso di abciximab nel trattamento di salvataggio della trombosi coronarica acuta nel Laboratorio di Emodinamica [Initial experience with the use of abciximab in the salvage treatment of acute coronary thrombosis in the Hemodynamics Laboratory]
- 1998
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Ingår i: Cardiologia (Rome, Italy). - 0393-1978. ; 43:11, s. 1221-1229
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The optimal treatment of acute thrombotic complications in the Catheterization Laboratory has not been defined yet, due to the limited efficacy shown by various pharmacological regimens, even when associated to coronary angioplasty (PTCA). The aim of our study was therefore to evaluate the effects of abciximab (ReoPro), a new potent inhibitor of the platelet glycoprotein IIb/IIIa, when administered as a rescue treatment for acute thrombotic coronary occlusion during diagnostic or interventional procedures. Sixteen patients (12 males, 4 females, mean age 59.3 +/- 9.2 years, range 43-77 years), with unstable angina and consecutively treated with abciximab due to clinical instability attributable to coronary thrombosis angiographically proven during PTCA (9 cases) or diagnostic angiography (7 cases), were identified. The individual angiographic films and medical records were then reviewed in order to evaluate the effects of treatment on coronary flow, thrombus size and occurrence of in-hospital adverse events: death, non-fatal acute myocardial infarction (AMI), need for urgent myocardial revascularization and hemorrhage. The administration of abciximab, in association with PTCA (associated in turn with stent implantation in 8 cases), induced a significant increase of coronary TIMI flow grade (0.3 +/- 0.6 vs 2.4 +/- 0.9; p less than 0.05) and a significant decrease of thrombus score (size) 2.4 +/- 0.9 vs 1.3 +/- 0.6; p less than 0.01). No deaths nor need for urgent myocardial revascularization were observed; in 31% of cases (5 patients) evolution towards AMI occurred, while however 94% of cases (15 patients) had a coronary occlusion before treatment. No major hemorrhagic complications were observed, while in 12% of cases (2 patients) a groin hematoma associated with moderate hemoglobin drop, developed. In conclusion, the administration of abciximab, associated with the common rescue interventional procedures, in patients with acute thrombotic coronary occlusion in the Catheterization Laboratory, appears to be effective in restoring adequate coronary flow and reducing the thrombus size (limiting therefore the evolution towards AMI), and safe, not having been associated with significant hemorrhagic complications.
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| 8. |
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| 10. |
- Aspelin, P., et al.
(författare)
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Cost-effectiveness of iodixanol in patients at high risk of contrast-induced nephropathy
- 2005
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Ingår i: American Heart Journal. - : Elsevier BV. - 0002-8703 .- 1097-6744. ; 149:2, s. 298-303
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Forskningsöversikt (refereegranskat)abstract
- Background: Acute renal failure after contrast-induced nephropathy is a clinically important and costly complication after the use of iodine-based contrast media. We investigated the cost and cost-effectiveness of 2 contrast media in patients at high risk of contrast-induced nephropathy. Methods: The analyses were based on a randomized, prospective, multinational clinical study comparing the nephrotoxic effects of an isosmolar nonionic contrast medium, iodixanol, with those of a low-osmolar nonionic contrast medium, iohexol. Resource utilization data were obtained from the study and from a retrospective review of patients' hospital records. Swedish, German, and French unit prices were applied to resources used. Between-group differences in average costs were analyzed using a nonparametric bootstrap method. Results: Resource utilization data for 125 patients were analyzed. Seven contrast media-related serious adverse reactions, of which 6 were acute renal failures, were noted in 6 patients receiving iohexol. Two patients in the iodixanol group had 1 nonserious reaction each. The mean hospitalization cost per patient was €489, €573, and €393 lower after iodixanol than after iohexol using Swedish, German, and French unit prices, respectively. The mean per-patient costs of treating adverse drug reactions were €371, €399, and €445 lower after iodixanol than after iohexol, using the respective unit prices (P = 0.01). Iodixanol was cost-effective compared with iohexol, with both lower costs and better effects related to fewer adverse drug reactions. Conclusions: The isosmolar contrast medium iodixanol appears to be cost-effective when compared with a low-osmolar contrast medium, iohexol, in diabetic patients with renal impairment undergoing angiography. © 2005, Elsevier Inc. All rights reserved.
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| 11. |
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| 12. |
- Aspelin, P, et al.
(författare)
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Nephrotoxic effects in high-risk patients undergoing angiography
- 2003
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Ingår i: New England Journal of Medicine. - 0028-4793 .- 1533-4406. ; 348:6, s. 491-499
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: The use of iodinated contrast medium can result in nephropathy. Whether iso-osmolar contrast medium is less nephrotoxic than low-osmolar contrast medium in high-risk patients is uncertain. METHODS: We conducted a randomized, double-blind, prospective, multicenter study comparing the nephrotoxic effects of an iso-osmolar, dimeric, nonionic contrast medium, iodixanol, with those of a low-osmolar, nonionic, monomeric contrast medium, iohexol. The study involved 129 patients with diabetes with serum creatinine concentrations of 1.5 to 3.5 mg per deciliter who underwent coronary or aortofemoral angiography. The primary end point was the peak increase from base line in the creatinine concentration during the three days after angiography. Other end points were an increase in the creatinine concentration of 0.5 mg per deciliter or more, an increase of 1.0 mg per deciliter or more, and a change in the creatinine concentration from day 0 to day 7. RESULTS: The creatinine concentration increased significantly less in patients who received iodixanol. From day 0 to day 3, the mean peak increase in creatinine was 0.13 mg per deciliter in the iodixanol group and 0.55 mg per deciliter in the iohexol group (P=0.001, the increase with iodixanol minus the increase with iohexol, -0.42 mg per deciliter [95 percent confidence interval, -0.73 to -0.22]). Two of the 64 patients in the iodixanol group (3 percent) had an increase in the creatinine concentration of 0.5 mg per deciliter or more, as compared with 17 of the 65 patients in the iohexol group (26 percent) (P=0.002, odds ratio for such an increase in the iodixanol group, 0.09 [95 percent confidence interval, 0.02 to 0.41]). No patient receiving iodixanol had an increase of 1.0 mg per deciliter or more, but 10 patients in the iohexol group (15 percent) did. The mean change in the creatinine concentration from day 0 to day 7 was 0.07 mg per deciliter in the iodixanol group and 0.24 mg per deciliter in the iohexol group (P=0.003, value in the iodixanol group minus the value in the iohexol group, -0.17 mg per deciliter [95 percent confidence interval, -0.34 to -0.07]). CONCLUSIONS: Nephropathy induced by contrast medium may be less likely to develop in high-risk patients when iodixanol is used rather than a low-osmolar, nonionic contrast medium.
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| 13. |
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| 16. |
- Aspfors, Jessica, et al.
(författare)
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A metasynthesis of research on mentor education : three emerging dimensions
- 2015
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Konferensbidrag (refereegranskat)abstract
- The aim of this meta-synthesis is to deepen the understanding and knowledge of research focusing on education for mentors of newly qualified teachers (NQTs). Altogether, 10 studies met the criteria for full inclusion and were synthesised. Three overarching dimensions were found as a final synthesis guiding the further development of mentor education: 1) Contextual dimensions, 2) Theoretical-analytical dimensions, and 3) Relational dimensions. The synthesis stresses the importance of a systematic, long-term and research-based mentor education that develops mentors’ (self-)understanding of teaching and mentoring, i.e. is well integrated in the educational context, has a balance of theoretical and practical components, includes rich possibilities for interaction and reflection and prepares for an evidence-informed mentoring.A REVISED AND EXTENDED VERSION OF THIS PAPER HAS LATER BEEN PUBLISHED AS OPEN ACCESS, SEE: http://www.sciencedirect.com/science/article/pii/S0742051X1500030X
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| 17. |
- Aspfors, Jessica, et al.
(författare)
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Att kvalificera sig till mentor – perspektiv på kompetensbehov och utbildning av mentorer för nya lärare
- 2015
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Ingår i: Psykologi i kommunen. - 1892-3364. ; 50:2, s. 17-27
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Tidskriftsartikel (refereegranskat)abstract
- Under senare år har allt mer fokus och resurser riktats mot lärares kompetensutveckling. Ett område för satsningar har bl.a. varit mentorskap. Mycket har skrivits om mentorskap generellt och om nya lärare och deras behov speciellt, men vad vet vi om mentorers kompetensutveckling och lärande? Vilka kompetenser behövs och hur påverkar det utbildning av veiledere/mentorer? I denna artikel sätter vi fokus på kvalificering av mentorer för nya lärare och på den kompetens de kan behöva för att på ett medvetet och framgångsrikt sätt vara mentor för nya lärare. Vi kommer att diskuter vilka kompetenser mentorer kan behöva och hur det i sin tur kan påverka utbildning av veileder/mentorer – såväl till innehåll som till form. Vi kommer inte att gå närmare in på frågan i vilken mån mentorskap är positivt eller inte för nya lärare, eftersom vår bedömning är att det finns mycket forskning som på ett övertygande sätt visar på dess positiva effekter (se t.ex. Bjerkholt, 2012; Dahl et al., 2006; Ingersoll & Strong, 2011; Waterman & He, 2011), även om vissa frågetecken kan resas kring dess räckvidd, exempelvis för skolutveckling (Dahl et al., 2006). Vi tar utgångspunkt i den internationella forskningen på området men ger också konkreta exempel från ett nordiskt perspektiv, i synnerhet från Sverige och Finland. Vi inleder med en bakgrundsteckning kring vad tidigare forskning på området lyfter fram om mentorers professionella utveckling och lärande till att bli mentor.
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| 18. |
- Aspfors, Jessica, et al.
(författare)
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Collaboration or assessment? Some perspectives on mentoring in Finland and Sweden.
- 2010
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Ingår i: The conference Promoting Learning and Well-Being of Students and teacher at University of Jyväskylä, Finland, 7-9 June 2010..
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Konferensbidrag (refereegranskat)abstract
- Collaboration or assessment? Some perspectives on mentoring in Finland and Sweden JESSICA ASPFORS, Faculty of Education, Åbo Akademi University, Finland GÖRAN FRANSON, Faculty of Education and Business Studie, University of Gävle, Sweden HANNU L. T. HEIKKINEN, Finnish Institute for Educational Research, University of Jyväskylä, Finland In this presentation, some tensional trends within mentoring, which we call a contradiction between collaboration and assessment, will be addressed. The aim is threefold: firstly to describe and compare the development of mentoring programs in Finland and Sweden at a system level, secondly to illustrate how the various mentoring systems have been experienced by the persons involved and thirdly to discuss the political and ideological circumstances and the possible effects of these solutions. The study is based on empirical data from the Finnish and Swedish contexts, both on the level of mentors’ and NQTs’ experiences, based on interviews and/or focus group discussions and on the national policy level, based on policy documents on teacher education and, in the Swedish part, the responses of teacher educators to them. The tentative result indicates profound differences between the two national initiatives of mentoring in Finland and Sweden. The mentoring process in Finland, peer group mentoring, is clearly based on social constructivist assumptions on knowledge and learning. The integration of formal, informal and nonformal learning as well as the equality and professional autonomy as persons and professionals is central. The proposed system of a mandatory induction system in Sweden is, however, very different with mentoring, probation year, registration of teachers and possible assessment of NQTs as central components. In the presentation these issues will be discussed upon in terms of teachers’ continuing professional learning and development.
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| 19. |
- Aspfors, Jessica, et al.
(författare)
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Contested Architectures of Mentoring : Support, Supervision or Collective Self-Development
- 2013
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Konferensbidrag (refereegranskat)abstract
- In this paper, we describe contested practices of mentoring within and between Australia, Finland and Sweden. Our study is based on national policy documents and empirical data from participants involved in mentoring. The theoretical framework will build on practice theory (Kemmis & Grootenboer, 2008; Kemmis & Heikkinen 2012). The aim is to demonstrate three archetypes persisting in literature and practices: mentoring as supervision, support and collective self-development. In Australia, we find the three kinds of mentoring jostling with one another. In Finland, the perspective of collective self-development is emphasized. In Sweden, the traditional model of mentoring (support) has been typical since 1995, with a current reform of teacher induction which turns mentoring more into supervision.Our paper will show (1) that the meanings of 'mentoring' are contested within and between the countries involved; (2) that the three forms of mentoring identified represent three different projects: (a) assisting newly qualified teachers (NQTs) to pass through probation or (b) traditional mentoring of NQTs by more experienced teachers or (c) peer-group mentoring (PGM); and (3) that these three projects, that could be simultaneously present, also involve and imply quite different practice architectures in the form of different materialeconomic, social-political and cultural-discursive arrangements.
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| 20. |
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| 21. |
- Aspfors, Jessica, et al.
(författare)
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Mentoring as Dialogue, Collaboration and/or Assessment?
- 2012
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Ingår i: Transitions and Transformations in Learning and Education. - Dordrecht : Springer Berlin/Heidelberg. - 9789400723115 - 9789400723122 ; , s. 271-290
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Bokkapitel (refereegranskat)abstract
- In this chapter, some tensional trends within mentoring, which we call a contradiction between collaboration and assessment, are addressed. The aim is threefold: First, to describe and compare the development of mentoring programmes in Finland and Sweden at the system level; second, to illustrate how the various mentoring systems have been experienced by the persons involved; and third, to discuss the political and ideological circumstances and the possible effects of these solutions. The study is based on empirical data gathered in Finland and Sweden and examines the experiences of mentors and newly qualified teachers (NQTs) as well as the relevant national policies. The findings indicate profound differences between the two national initiatives of mentoring in Finland and Sweden. The mentoring process in Finland, using peer group mentoring, is based on social constructivistic assumptions regarding knowledge and learning. The integration of formal, informal and non-formal learning, as well as the equality and professional autonomy as a person and as a professional, is central. The system of mandatory induction in Sweden is very different, with mentoring, a probation year and the registration of teachers being central components. In such a system, the mentors' role of avoiding direct or indirect involvement in the assessment may become more challenging.
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| 22. |
- Aspfors, Jessica, et al.
(författare)
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Research on mentor education for mentors of newly qualified teachers : A qualitative meta-synthesis
- 2015
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Ingår i: Teaching and Teacher Education. - : Elsevier BV. - 0742-051X .- 1879-2480. ; 48, s. 75-86
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this meta-synthesis is to deepen the understanding and knowledge of qualitative research focusing on education for mentors of newly qualified teachers. Altogether, 10 studies were included and synthesised. Four common themes emerged in the initial analysis: School and mentoring context, Theory and practice, Reflection and critical thinking and Relationships. Furthermore, three overarching dimensions were found as a final synthesis guiding the further development of mentor education: 1) Contextual dimensions, 2) Theoretical-analytical dimensions, and 3) Relational dimensions. The synthesis stresses the importance of a systematic, long-term and research-informed mentor education that develops mentors' (self-)understanding of teaching and mentoring.
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| 23. |
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| 24. |
- Belfrage, Henrik, et al.
(författare)
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Management of violent behaviour in the correctional system using qualified risk assessments.
- 2004
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Ingår i: Legal and Criminological Psychology. - : Wiley-Blackwell. - 1355-3259 .- 2044-8333. ; 9:1, s. 11-22
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Tidskriftsartikel (refereegranskat)abstract
- Purpose. This study focused on whether institutional violence in a maximum-security correctional institution could be prevented using comprehensive risk assessments followed by adequate risk management. And, could this be shown by a decrease in risk factors for violence according to the HCR-20 Risk Assessment Scheme in the study group? Methods. Offenders with a history of violent criminality were subject to real-life assessments using the HCR-20 Risk Assessment Scheme. The assessments were followed by discussions with members of staff, in which risk management strategies were designed. Thus, the members of staff were fully aware of every inmate's personality characteristics (e.g. psychiatric diagnoses), what risk factors for violence they displayed, and how best to manage those risk factors. With the aim of evaluating the possible effects of our interventions, approximately one third of the study group was reassessed after a mean of 12 months. Results. The follow-up showed no significant decrease in important risk factors for violence in the study group. However, the number of violent incidents showed a remarkable decrease during the study period. Conclusions. Not being able to reduce important risk factors for violence does not necessarily mean that one cannot decrease the risk for, or the incidence of, violence. This study indicates that proper and adequate risk management, using the best protective factors available, can reduce violence even though important risk factors cannot be decreased. The study also supports the theoretical assumption that changes in risk factors are more possible in some populations (e.g. general psychiatric) than in others (e.g. correctional) depending on the nature of the study group and the risk factors that are at hand (e.g. dynamic vs. static). This seems to be important to bear in mind when performing evaluation research using risk assessment instruments.
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| 25. |
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