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- Bäckvall, Maja, 1983-
(författare)
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Skriva fel och läsa rätt? : Eddiska dikter i Uppsalaeddan ur ett avsändar- och mottagarperspektiv
- 2013
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- This dissertation focuses on the eddic poetry in the Codex Upsaliensis DG 11 4to, the Uppsala Edda. The manuscript has long been considered too far removed from the assumed original of the text to be of much use to editors, with the result that it was largely neglected by philologists during the last century. The eddic poetry in DG 11 differs in many instances from the other main manuscripts, and this study aims to examine these variants from the point of view of the 14th century scribe and reader of the manuscript. The dissertation’s framework comes close to what is known as New or Material Philology, but since the focus is more on the abstract than the material sides of the manuscript, the study’s theoretical framework is tentatively called descriptive reception philology.In all, 57 stanzas of eddic poetry are examined. The study does not include variation in names or metrics other than alliteration, which means that 10 stanzas consisting almost entirely of names have been excluded. The remaining 57 stanzas contain 137 variants that DG 11 shares with half or fewer of the other manuscripts. These variants are analysed with the aim of deciding whether they were consciously written by the scribe and to what extent the reader could have understood them. Consciously produced variants are said to belong to the sender witness, and if they were probably understood, they are also placed in the receiver witness. Variants not immediately understood by the readers are called incongruities and need to be reinterpreted in order to become part of the receiver witness. If they cannot be interpreted, they are categorised as actual errors.The analysis shows that the vast majority of deviating variants belong to both the sender and receiver witnesses. There are also indications that the eddic poetry was in part quoted from a different exemplar than the prose, an exemplar containing versions of the poems not otherwise known today. Rather than being regarded as confused and incomprehensible, DG 11’s eddic poetry was accepted as the version known by the manuscript’s contemporary users.
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- Koutouzi, Giasemi, 1984, et al.
(författare)
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Orthogonal Rings, Fiducial Markers, and Overlay Accuracy When Image Fusion is Used for EVAR Guidance.
- 2016
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Ingår i: European journal of vascular and endovascular surgery : the official journal of the European Society for Vascular Surgery. - : Elsevier BV. - 1532-2165. ; 52:5, s. 604-611
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Tidskriftsartikel (refereegranskat)abstract
- Evaluation of orthogonal rings, fiducial markers, and overlay accuracy when image fusion is used for endovascular aortic repair (EVAR).This was a prospective single centre study. In 19 patients undergoing standard EVAR, 3D image fusion was used for intra-operative guidance. Renal arteries and targeted stent graft positions were marked with rings orthogonal to the respective centre lines from pre-operative computed tomography (CT). Radiopaque reference objects attached to the back of the patient were used as fiducial markers to detect patient movement intra-operatively. Automatic 3D-3D registration of the pre-operative CT with an intra-operative cone beam computed tomography (CBCT) as well as 3D-3D registration after manual alignment of nearby vertebrae were evaluated. Registration was defined as being sufficient for EVAR guidance if the deviation of the origin of the lower renal artery was less than 3mm. For final overlay registration, the renal arteries were manually aligned using aortic calcification and vessel outlines. The accuracy of the overlay before stent graft deployment was evaluated using digital subtraction angiography (DSA) as direct comparison.Fiducial markers helped in detecting misalignment caused by patient movement during the procedure. Use of automatic intensity based registration alone was insufficient for EVAR guidance. Manual registration based on vertebrae L1-L2 was sufficient in 7/19 patients (37%). Using the final adjusted registration as overlay, the median alignment error of the lower renal artery marking at pre-deployment DSA was 2mm (0-5) sideways and 2mm (0-9) longitudinally, mostly in a caudal direction.3D image fusion can facilitate intra-operative guidance during EVAR. Orthogonal rings and fiducial markers are useful for visualization and overlay correction. However, the accuracy of the overlaid 3D image is not always ideal and further technical development is needed.
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| 4. |
- Lundbäck, Andreas, et al.
(författare)
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Simulation and validation of TIG-welding and post weld heat treatment of an Inconel 718 plate
- 2005
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Ingår i: Mathematical modelling of weld phenomena 7. - Graz : Techn. Univ. TYG. - 390135199X ; , s. 683-696
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Konferensbidrag (refereegranskat)abstract
- A finite element based model was used to simulate the thermal and mechanical response of a simple geometry TIG welded joint, validated through experiments. TIG welding experiments were carried out to produce butt welds in Inconel 718 sheets of thickness 3.2 mm, followed by heat treatment. Transient temperature and strain measurements were performed during welding; residual stress measurements were carried out after welding and after heat treatment. Calculated and measured welding temperature histories, strains and residual stresses were compared. The effect of buckling occurrence on the sensitivity of the model is noted.
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| 5. |
- Lövgren, Anna, et al.
(författare)
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The impact of gender of the examiner on orofacial pain perception and pain reporting among healthy volunteers
- 2022
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Ingår i: Clinical Oral Investigations. - : Springer. - 1432-6981 .- 1436-3771. ; 26, s. 3033-3040
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Tidskriftsartikel (refereegranskat)abstract
- Objectives: Pain on palpation of jaw muscles is a commonly used diagnostic criterion when examining patients with orofacial pain. It is not known, however, if pain reports are affected by the gender of the examiner. Our aim was to investigate if pressure pain threshold (PPT), pressure pain tolerance (PTol), and pain intensity assessed over the masseter muscles in healthy individuals are affected by the gender of the examiner.Materials and methods: Healthy, pain-free individuals were recruited on a voluntary basis. PPT and PTol were assessed using pressure algometry. At the PTol level, participants also rated pain intensity on a 0–10 numeric rating scale. Assessments of PPT and PTol were conducted with six repeated measurements performed twice, separately by one female and one male examiner, on each participant.Results: In total, 84 participants (43 women; median age 24, IQR 6) were included. With a female examiner, women reported higher pain intensity than men (Mann Whitney U, p = 0.005). In the multivariable analysis, significantly higher PTol was predicted by male examiner. Also, a higher ratio between PTol and reported pain intensity was predicted by male examiner.Conclusions: The gender of the examiner influences pain reporting and perception in an experimental setting. This effect on pain perception related to gender of the examiner is probably related to normative gender behaviors rather than to biological alterations within the examined individual.Clinical relevance: In clinical and experimental settings, gender of the examiner may affect not only pain perception but also pain reporting, with potential implications for diagnostics in patients with pain.
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