| 1. |
- Frisk, Karin, et al.
(författare)
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Characterisation of EBM-built shelled samples of Ti6Al4V compacted by HIP
- 2016
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Ingår i: World PM 2016 Congress and Exhibition. - : European Powder Metallurgy Association (EPMA). - 9781899072484
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Konferensbidrag (refereegranskat)abstract
- Compaction of additively manufactured Ti6Al4V components by Hot Isostatic Pressing (HIP) is often applied to eliminate porosity, producing fully dense material. In the present work shelled samples produced by Electron Beam Melting with the Arcam process (EBM) were compacted by HIP to produce fully dense samples. Cylindrical samples were studied. The walls of the cylinders were built with EBM, and the powder from the process was left uncompacted inside the cylinders. Samples with different wall thicknesses were produced. The samples were thereafter subjected to a HIP compaction. The critical wall thicknesses needed for compaction were evaluated, and the microstructures characterized. The results show that fully dense samples, with very fine microstructures, are possible.
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| 2. |
- Indzic Dujso, Aleksandra, 1965-
(författare)
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Nationella minoriteter i historieundervisningen : bilder av romer i Utbildningsradions program under perioden 1975-2013
- 2015
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- In 2000 when Sweden signed the Framework Convention for the Protection of National Minorities the Roma minority became one of the acknowledged national minorities in the country. It meant that the rights of the Roma mi-nority would be safeguarded and the knowledge of its history and culture would be spread. In that context, the Swedish school, with its founded as-signment of democracy, was given an important role. The education was to communicate the multicultural values of the society and to make visible the history and culture of the Roma minority.The school books used in teaching today do not meet these demands. The view of the Roma minority given in school books is often inadequate and simplified. The present study will therefore examine a different type of edu-cational material used in schools and teaching, The Swedish Educational Broadcasting Company‟s programs of history and social studies regarding the Roma minority. Starting in postcolonial theory as well as critical dis-course analysis the study examines how the picture of the Roma cultural and ethnic identity in the Swedish Educational Broadcasting Company‟s material has been displayed and possibly changed during the period of 1975 to 2013.The results show a picture of Roma which, both in form and content, con-sists of some clearly demarcated discursive categories. The obvious continui-ty of the categories gives a picture of static and invariable Roma identity. At the same time this unambiguous picture is broken both by giving the existing discourses new meaning and also adding new discourses. The complexity and nuances become more prominent and the Roma identity is integrated in common Swedish history telling. The changes in the view of Roma, given by the Swedish Educational Broadcasting Company, can mainly be explained by the change of the Swedish immigration and minority policy and, as a conse-quence of this, the change of the school‟s mission regarding knowledge communication of Sweden as a multicultural country.
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| 3. |
- Adolfsson, Jan, et al.
(författare)
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Clinical characteristics and primary treatment of prostate cancer in Sweden between 1996 and 2005 : Data from the national prostate cancer register in Sweden
- 2007
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Ingår i: Scandinavian Journal of Urology and Nephrology. - Stockholm : Taylor & Francis. - 0036-5599 .- 1651-2065. ; 41:6, s. 456-477
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Tidskriftsartikel (refereegranskat)abstract
- Objective. The incidence of prostate cancer is rising rapidly in Sweden and there is a need to better understand the pattern of diagnosis, tumor characteristics and treatment. Material and methods. Between 1996 and 2005, all new cases of adenocarcinoma of the prostate gland were intended to be registered in the National Prostate Cancer Register (NPCR). This register contains information on diagnosing unit, date of diagnosis, cause of diagnosis, tumor grade, tumor stage according to the TNM classification in force, serum prostate-specific antigen (PSA) levels at diagnosis and primary treatment given within the first 6 months after diagnosis. Results. In total, 72 028 patients were registered, comprising >97% of all pertinent incident cases of prostate cancer in the Swedish Cancer Register (SCR). During the study period there was a considerable decrease in median age at the time of diagnosis, a stage migration towards smaller tumors, a decrease in median serum PSA values at diagnosis, a decrease in the age-standardized incidence rate of men diagnosed with distant metastases or with a PSA level of >100 ng/ml at diagnosis and an increase in the proportion of tumors with Gleason score ≤6. Relatively large geographical differences in the median age at diagnosis and the age-standardized incidence of cases with category T1c tumors were observed. Treatment with curative intent increased dramatically and treatment patterns varied according to geographical region. In men with localized tumors and a PSA level of <20 ng/ml at diagnosis, expectant treatment was more commonly used in those aged ≥75 years than in those aged <75 years. Also, the pattern of endocrine treatment varied in different parts of Sweden. Conclusions. All changes in the register seen over time are consistent with increased diagnostic activity, especially PSA testing, resulting in an increased number of cases with early disease, predominantly tumors in category T1c. The patterns of diagnosis and treatment of prostate cancer vary considerably in different parts of Sweden. The NPCR continues to be an important source for research, epidemiological surveillance of the incidence, diagnosis and treatment of prostate cancer
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| 4. |
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| 5. |
- Bauer, Silke, et al.
(författare)
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The grand challenges of migration ecology that radar aeroecology can help answer
- 2019
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Ingår i: Ecography. - : Wiley. - 0906-7590 .- 1600-0587. ; 42:5, s. 861-875
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Tidskriftsartikel (refereegranskat)abstract
- Many migratory species have experienced substantial declines that resulted from rapid and massive expansions of human structures and activities, habitat alterations and climate change. Migrants are also recognized as an integral component of biodiversity and provide a multitude of services and disservices that are relevant to human agriculture, economy and health. The plethora of recently published studies reflects the need for better fundamental knowledge on migrations and for better management of their ecological and human-relevant effects. Yet, where are we in providing answers to fundamental questions and societal challenges?. Engaging a broad network of researchers worldwide, we used a horizon-scan approach to identify the most important challenges which need to be overcome in order to gain a fuller understanding of migration ecology, and which could be addressed using radar aeroecological and macroecological approaches. The top challenges include both long-standing and novel topics, ranging from fundamental information on migration routes and phenology, orientation and navigation strategies, and the multitude of effects migrants may have on resident communities, to societal challenges, such as protecting or preventing migrant services and disservices, and the conservation of migrants in the face of environmental changes. We outline these challenges, identify the urgency of addressing them and the primary stakeholders – researchers, policy makers and practitioners, or funders of research.
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| 6. |
- Berg, Mikael, 1970-
(författare)
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Historielärares historier : Ämnesbiografi och ämnesförståelse hos gymnasielärare i historia
- 2010
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The overall aim of this study is to analyse history teachers’ understanding of the school subject history. The aim have also been to uncover what factors the history teachers say have affected their understanding of the school subject. Based on survey and interview methods, the question that this study deals with is: in the light of which general understanding of the school subject history, do the teachers make didactic choices on a daily basis?The first theme is biographical. The teachers’ life-history is taken into consideration and several factors in the teachers’ background and the school environment have been identified. It also seems as if the teachers’ understanding of the school subject goes from an elementary and searching approach to one that is more complex and convinced.The second theme is a more structural approach. The results shows three major orientations among the teachers’ general understanding namely, educational (bildung) orientation, critical orientation and identity orientation. Even though a main orientation can be seen among the teachers, an important result is also that the orientation is overall complex.At the most general level some patterns can be seen. First the connection between the teachers’ biography and their general understanding of the school subject. In the understanding of the school subject, it is also notable that teachers relate in different ways to history as science, history as identity and history from an ideological viewpoint. It is also possible to note some signs of change in the school subject history that follows a lager historiographical context.
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| 7. |
- Berg, Mikael, 1970-
(författare)
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Historielärares ämnesförståelse : Centrala begrepp i historielärares förståelse av skolämnet historia
- 2014
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- This thesis focuses on four different aspects of history teachers’ comprehensive understanding of the school subject history. More specifically, the aim is to study the comprehension of the subject as perceived by individual history teachers. Special emphasis is placed on identifying the concepts of the field of history that are central to the teachers’ understanding of the school subject history. The first aspect studied is the teachers’ biographical changes. In a life history perspective it seems as if the teachers’ subject conception changes from an unproblematic and tentative approach to a more complex and confident understanding of the subject. The second aspect treated is the rationale behind their grasp of the purpose and content of the subject. Three major positions are identified, namely educational (bildung) orientation, critical orientation, and identity orientation. The third aspect studied is the teachers’ interpretation of a curriculum new to them. The teachers placed the curriculum in the field of tension between an education policy position, emphasizing more precise knowledge, on the one hand, and a history science position, emphasizing concepts of historical consciousness. The fourth aspect studied is five different conceptual tools displayed in the teachers’ remarks on having completed the teaching of a new course. These are termed ‘history as narrative’, ‘history as time-space’, ‘history as explanation’, ‘history as perspective taking’, and ‘history as skills’ At the general level the study shows not only that subject conception is of importance to the teachers’ understanding of their obligation as teachers of history but also how it is formed and constantly transformed by many different factors. In this process it is clear that the concepts used by the teachers, although variously defined, can be seen as specific to the school subject history and essential to the construction of history as a school subject.
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| 8. |
- Bjärehed, Jonas, et al.
(författare)
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Examining the Acceptability, Attractiveness, and Effects of a School-Based Validating Interview for Adolescents Who Self-Injure
- 2013
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Ingår i: Journal of School Nursing. - : SAGE Publications. - 1546-8364 .- 1059-8405. ; 29:3, s. 225-234
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Tidskriftsartikel (refereegranskat)abstract
- Nonsuicidal self-injury (NSSI) in adolescents is a significant problem that needs to be addressed, and in some cases managed, in school settings. The current feasibility study uses screening questionnaires and follow up-interviews on NSSI in a community sample of adolescents (N ¼ 1,052) in Sweden. Both adolescents reporting self-injury (n ¼ 66) and a comparison group (n ¼ 31) were interviewed, and information disclosed about self-injury, as well as the results from the interviewers assessments of the seriousness of these behaviors, were examined. Generally, adolescents reported positive feelings about being interviewed, and 52% of those who had reported self-injury in the questionnaire disclosed NSSI in the interviews. Further, a majority of these cases, 76%, were not assessed as very serious. When NSSI was reported in a questionnaire 1 year after the interview, there were no indications of iatrogenic effects from participating in the interview. The results support the feasibility of using NSSI screening questionnaires in combination with follow-up interviews in schools.
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| 9. |
- Bogefors, Jesper, et al.
(författare)
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Retinoic acid-inducible gene 1-like receptors in the upper respiratory tract.
- 2011
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Ingår i: American Journal of Rhinology & Allergy. - : SAGE Publications. - 1945-8924 .- 1945-8932. ; 25:6, s. 262-267
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Tidskriftsartikel (refereegranskat)abstract
- Retinoic acid-inducible gene 1-like receptors (RLRs) are a novel family of pattern recognition receptors that include retinoic acid-inducible gene 1 (RIG-1), melanoma differentiation-associated gene 5 (MDA-5), and laboratory of genomics and physiology 2 (LGP-2). The knowledge of RLRs and their function in the human airway is limited. This study explores the role of RLRs in the upper respiratory tract.
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| 10. |
- Boström, Ulrika, 1970-
(författare)
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”När man kollar på bilden tänker man så här” : en receptionsstudie av gymnasieelevers uppfattning om bilder som kunskapskällor i historieundervisningen
- 2014
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Images are used in history education for a variety of reasons, not least to generate interest through a better understanding of historical events and people. The aim of this study was to investigate how historical pictures, either illustrated or documentary/photographic, can be used as a resource for activating and improving pupils' historical empathy, in the way described by Stéphane Lévasque.I conducted a reception study on five different focus groups consisting of pupils from different upper secondary schools in Sweden. The pupils varied with regard to number of credits for admission to upper secondary school. A sixth group of pupils was interviewed as a contrasting control group in order to add perspective to the results. The discussions were based on the pupils' interpretations of 34 selected pictures, all of which were taken from the most common history textbooks. Each pupil was asked to choose the picture he/she felt was the most representative historical image. On the basis of the strategies used by the pupils when interpreting the pictures and discussing them, the material was analysed in accordance with Lévesque's categories: imagination, historical contextualisation and morals. The last category, morals, was further divided into three sub-categories: sense of justice, sympathy and progression.The reflections of the pupils and the degree of contextualisation varied. It appeared that the pupils were less inclined to discuss assumptions about the persons in the pictures; instead they chose to discuss the historical context in question. The pictures in this study did not seem to trigger the pupils to fabricate anachronistic reasoning about history; when they did produce lengthy reasoning, it was contextual, structural and metahistorical. In this context, the pupils who belonged to the group with the highest average of credits showed some signs of reflection on the basis of historical context and some criticism about the historical sources. On no occasion did any of the pupils choose a picture as a concrete expression of injustice.One of the questions this study aimed to explore was whether a lack of historical context affects how pictures trigger emotions and reasoning on the basis of moral aspects. Some of the pupils displayed moral standpoints, primarily the degree of morals concerning injustice. One possible interpretation could be that the feeling of being unfairly treated and subjected to insulting behaviour and social injustice was something the pupils could relate to. The group of pupils who had not yet studied history at upper secondary school, the control group, generally made reflections using this sort of reasoning when they discussed the historical aspects of the pictures.
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