| 1. |
- Pejlare, Johanna, 1976
(author)
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On Axioms and Images in the History of Mathematics
- 2007
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Doctoral thesis (other academic/artistic)abstract
- This dissertation deals with aspects of axiomatization, intuition and visualization in the history of mathematics. Particular focus is put on the end of the 19th century, before David Hilbert's (1862–1943) work on the axiomatization of Euclidean geometry. The thesis consists of three papers. In the first paper the Swedish mathematician Torsten Brodén (1857–1931) and his work on the foundations of Euclidean geometry from 1890 and 1912, is studied. A thorough analysis of his foundational work is made as well as an investigation into his general view on science and mathematics. Furthermore, his thoughts on geometry and its nature and what consequences his view has for how he proceeds in developing the axiomatic system, is studied. In the second paper different aspects of visualizations in mathematics are investigated. In particular, it is argued that the meaning of a visualization is not revealed by the visualization and that a visualization can be problematic to a person if this person, due to a limited knowledge or limited experience, has a simplified view of what the picture represents. A historical study considers the discussion on the role of intuition in mathematics which followed in the wake of Karl Weierstrass' (1815–1897) construction of a nowhere differentiable function in 1872. In the third paper certain aspects of the thinking of the two scientists Felix Klein (1849–1925) and Heinrich Hertz (1857–1894) are studied. It is investigated how Klein and Hertz related to the idea of naïve images and visual thinking shortly before the development of modern axiomatics. Klein in several of his writings emphasized his belief that intuition plays an important part in mathematics. Hertz argued that we form images in our mind when we experience the world, but these images may contain elements that do not exist in nature.
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| 2. |
- Gulz, Agneta, et al.
(author)
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Lärande och kognition
- 2012
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In: Kognitionsvetenskap. - Lund : Studentlitteratur. - 9789144051666
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Book chapter (other academic/artistic)
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| 3. |
- Abila, R., et al.
(author)
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Oil extraction imperils Africa’s Great Lakes
- 2016
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In: Science. - : American Association for the Advancement of Science (AAAS). - 0036-8075 .- 1095-9203. ; 354:6312, s. 561-562
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Journal article (other academic/artistic)abstract
- As the world's demands for hydrocarbons increase (1), remote areas previously made inaccessible by technological limitations are now being prospected for oil and gas deposits. Virtually unnoticed by the public, such activities are ongoing in the East African Great Lakes region, threatening these ecosystems famed for their hyper-diverse biota, including the unique adaptive radiations of cichlid fishes (2). Countries in the region see exploitation of hydrocarbon reserves as a vital economic opportunity. In the Lake Albert region of Uganda, for example, the government foresees a $3.6 billion oil profit per year starting in 2018—a sum almost as high as the country's current annual budget (3). However, oil extraction in the East African Great Lakes region poses grave risks to the environment and local communities.
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| 4. |
- Jensen, Mikael, 1969
(author)
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Lekteorier
- 2013
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Book (other academic/artistic)
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| 5. |
- Börjesson, Anders
(author)
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In silico studies of carbon nano tubes and metal clusters
- 2010
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Doctoral thesis (other academic/artistic)abstract
- Carbon nanotubes have been envisioned to become a very important material in various applications. This is due to the unique properties of carbon nanotubes which can be exploited in applications on length scales spanning from the nano world to our macroscopic world. For example, the electronic properties of carbon nanotubes makes them utterly suitable for nano electronics while the strength of them makes them suitable for reinforcements in plastics. Both of these applications do however require... mer the ability for systematic production of carbon nanotubes with certain properties. This is called selective carbon nanotube growth and today this has not been achieved with total success. In the work presented in the thesis several different computational methods have been applied in our contribution to the systematic search for selective carbon nanotube growth. Put in a context of previous knowledge about carbon nanotube growth our results provide valuable clues to which parameters that control the carbon nanotube growth. In association with the latest results we even dare to, with all modesty, speculate about a plausible control mechanism. The studies presented in the thesis addressed different stages of carbon nanotube growth, spanning from the properties affecting the initiation of the growth to the parameters affecting the termination of the growth. In some more detail this included studies of the melting temperatures of nanoscaled metal clusters. The expected size dependence of the melting temperatures was confirmed and the melting temperatures of clusters on substrates were seen to depend both on the material and shape of the surface. As this constitute the premises prior to the carbon nanotube growth it was followed by studies of the interaction between carbon nanotubes and metal clusters of different size and constitution. This was done using different computational methods and at different temperatures. It soon became apparent that the clusters adapted to the carbon nanotube and not vice versa. This held true irrespectively of the constitution of the cluster, that is for both pure metal and metal carbide. It was also seen that there exist a minimum cluster size that prevent the carbon nanotube end from closing. Closure of the carbon nanotube end is likely to lead to the termination of the growth which lead to studies of other reasons for growth termination, e.g., Ostwald ripening of the catalyst particles. This was investigated with the result that the rate of the Ostwald ripening may depend on both the chirality and diameter of the carbon nanotubes. It is suggested that this may provide some answers to the controlled growth of carbon nanotubes.
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| 6. |
- Ferlin, Maria
(author)
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Biologisk mångfald i läroböcker i biologi
- 2014
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Doctoral thesis (other academic/artistic)abstract
- The aim of this thesis is to analyse offered meaning, that is, what and how subject content is communicated to the recipients. In this case the subject content is biological diversity and the communicative artefacts are biology books for the latter grades in the Swedish compulsory school. The four papers cover aspects of biodiversity in biology books (I), connections between biology books and the world outside school (II), the definition of the species concept and the use of the concept species in textbooks and in pupils' assertions (III), and finally how instances of modes are connected in a multimodal text and how the design of texts may affect the possibilities of meaning making (IV). The biology books used for data collection are multimodal texts with different types of written text and a rich amount of illustrations. The collected data was primarily used for content analysis but also to explore the design of the books. In paper III and IV data was also obtained by two questionnaires to students. Data is analysed and the results are discussed on the basis of a social semiotic theory of communication and meaning making. The books contain many facts about biological diversity, but the concept is not defined explicitly in several of them. In relation to human beings and human activities are beneficial aspects of biological diversity given precedence over ethical, aesthetic and economic aspects. The results also show that the books contain inaccuracies and questionable formulations regarding biodiversity, as well as simplifications and colloquial expressions rather than scientifically accurate terminology. Direct address, anthropomorphism, analogies and connections to life outside school are also found in the books. To recognize themselves in many of the connections to everyday life, pupils need to have visited many habitats in different seasons. The use of concepts is an area where there is a great potential for change. The species concept can be seen as an example of how a concept is introduced early and that understanding is taken for granted in the remaining text. Responses from the questionnaires suggest that more time needs to be given to basic biological concepts and that a big amount of instances of modes may impede meaning making. Textbooks are compromise products created to suit a diverse audience. There is a risk that the offered meaning of the books is not consistent with the perceived meaning of the students. The results of the thesis may contribute to reduce the gap between offered and perceived meaning. If awareness is raised about the problems pupils may face when using textbooks, the teachers' and the authors' ability to support meaning making may increase.
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| 7. |
- Player-Koro, Catarina, et al.
(author)
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Exploring the effects of the learning context: Comparing and contrasting on- and off-line qualifications providing programmes and courses for upper-secondary level and higher education matriculation
- 2014
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In: Rethinking Educational Ethnography Conference: Researching on-line communities and interactions; University of Copenhagen; Copenhagen 3-4 June 2014.
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Conference paper (other academic/artistic)abstract
- This submission is based on research with a multi-sited design that targets and compares learning, interaction and outcomes. In it we discuss the challenges of doing research based evaluation of digitally innovative online learning. Empirically the article takes its point of departure from the main findings from research in four upper secondary schools in a 1:1 project (one laptop per student) and four classrooms that are part of the empirical study. Bernstein’s theoretical concept of the pedagogic discourse is used to make visible how the main incentive for teaching methods is the assessment system that recontextualises traditional discourses about teaching and learning. The conclusion is that fundamental transformations of education is less about technology and more about the changing of the structures and discourses about teaching, learning and education.
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| 8. |
- Gund, Anna, 1980, et al.
(author)
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Care@Distance – Disease Management för hjärtsviktspatienter i hemmet
- 2007
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In: Medicinteknikdagarna, 2-3 October 2007, Örebro, Sweden. - : Svensk förening för medicinsk teknik och fysik, Örebro Läns Landsting, Örebro Universitet, Stiftelsen för strategisk forskning, Vetenskapsrådet, Vinnova.
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Conference paper (other academic/artistic)abstract
- Antalet äldre i samhället ökar, och med det kostnaderna p.g.a. kroniska åldersrelaterade sjukdomstillstånd. Ett sådant tillstånd är hjärtsvikt vilket drabbar ca 2 % av västvärldens befolkning. Forskning har visat att IT-baserad hemvård för s.k. Disease Management kan resultera i minskade kostnader så väl som ökad livskvalitet hos patienterna. Inom projektet Care@Distance är avsikten att utforma ett sådant system där tyngden ligger dels på regelbundna dagliga enkla mätningar av fysiologiskt relaterade parametrar såsom vikt och blodtryck, och dels på formulär där patienten svarar på några enkla frågor om det upplevda tillståndet. Syftet är att få med både objektiv och subjektiv information som sedan kan ligga till grund för en förbättrad vård av den enskilde patienten. Systemet utformas främst för att skapa underlag för en bättre långsiktig behandling, terapi och för uppföljning av Treatment Compliance, men även för att hantera akuta situationer genom t.ex. larm till vårdgivaren. Under projektets tid har ett samarbete med DAGA-kliniken på Östra sjukhuset upprättats, genom bl.a. diskussioner om frågeformulärets utformning. Under våren 2007 har även två förstudier genomförts på kliniken, den första med inriktning mot patientdelen av systemet, och den andra mot vårdgivarsidan. Studien visar att patientdelen är lätthanterad ur patientsynpunkt samt att intresse för systemet finns. Även på vårdgivarsidan är resultaten positiva när det gäller design, funktioner och intresse, men utrymme för förbättringar finns. Fortsatta studier i form av ett längre försök i hemmet hos patienter är planerat under sommaren och hösten 2007. Under sommaren kommer även patientdelen att vidareutvecklas med ny programvara. Ett framtida projekt innefattar att utveckla en metod för att utnyttja EBI (Elektrisk Bio-Impedans). Med relativt enkla och robusta mätningar förväntas mycket användbar och relevant information om sjukdomstillståndet kunna erhållas med denna metod, men detta kräver att ny sensorteknik utvecklas för hemmiljön.
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| 9. |
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| 10. |
- Jensen, Mikael, 1969-
(author)
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Den fria tidens lärande
- 2011
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Book (other academic/artistic)abstract
- Lärande är centralt i det mesta vi gör. Kanske särskilt under vår fritid. Den här boken handlar huvudsakligen om hur vi människor lär oss och tar samtidigt med tiden som en väsentlig faktor för lärande. Vårt sätt att förhålla oss till tid påverkar hur vi lär. Det som kallas den fria tiden skapar förutsättningar för lärande som skiljer sig från lärande inom ramen för mer styrd tid. Relaterade begrepp som informellt och formellt lärande diskuteras. Flera teorier om lärande beskrivs. Författaren använder en mängd exempel för att illustrera olika sätt att se på tid och lärande. De mest centrala delarna berör barns lärande inom fritidshem, förskola och skola, men även lärande i hemmiljö och platser där barn befinner sig på sin fritid. Boken vänder sig i första hand till lärare och andra professionella som arbetar med barn under deras fritid. Fritidshemmet diskuteras i ett eget kapitel men alla delar av boken är relevanta för fritidshemsverksamhet.
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