| 1. |
- Ringh, Emil, et al.
(author)
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Nonlinearizing two-parameter eigenvalue problems
- 2021
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In: SIAM Journal on Matrix Analysis and Applications. - : Society for Industrial & Applied Mathematics (SIAM). - 0895-4798 .- 1095-7162. ; 42:2, s. 775-799
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Journal article (peer-reviewed)abstract
- We investigate a technique to transform a linear two-parameter eigenvalue problem, into a nonlinear eigenvalue problem (NEP). The transformation stems from an elimination of one of the equations in the two-parameter eigenvalue problem, by considering it as a (standard) generalized eigenvalue problem. We characterize the equivalence between the original and the nonlinearized problem theoretically and show how to use the transformation computationally. Special cases of the transformation can be interpreted as a reversed companion linearization for polynomial eigenvalue problems, as well as a reversed (less known) linearization technique for certain algebraic eigenvalue problems with square-root terms. Moreover, by exploiting the structure of the NEP we present algorithm specializations for NEP-methods, although the technique also allows general solution methods for NEPs to be directly applied. The nonlinearization is illustrated in examples and simulations, with focus on problems where the eliminated equation is of much smaller size than the other two-parameter eigenvalue equation. This situation arises naturally in domain decomposition techniques. A general error analysis is also carried out under the assumption that a backward stable eigensolver is used to solve the eliminated problem, leading to the conclusion that the error is benign in this situation.
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| 3. |
- Jansson, Anna
(author)
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Protein
- 2009
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In: Foderbladet Häst. - 1652-683X. ; , s. 4-4
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Journal article (pop. science, debate, etc.)
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| 5. |
- Janssen, T., et al.
(author)
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Publication rate of paper and podium presentations from the European Section of the Cervical Spine Research Society Annual Meeting
- 2016
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In: European Spine Journal. - : Springer Science and Business Media LLC. - 0940-6719 .- 1432-0932. ; 25:7, s. 2311-2316
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Journal article (peer-reviewed)abstract
- The Cervical Spine Research Society Europe (CSRS-E) actively promotes scientific activities, the annual meeting being the most evident of them. The publication rate of oral and poster presentations at the annual meeting could be a measure for the success of the promotional activities. The publication rates of abstracts presented at the annual European meetings of the CSRS are unknown. The quality of the abstracts presented at a conference is reflected by the publication rate. A high publication rate is usually interpreted as representative of high scientific value of the conference. Poster and podium presentations from the 2007 to 2012 annual meetings were identified. Pubmed was used to search for the abstract title and/or the combination of authors to verify whether the data were published in a peer-reviewed journal. Abstracts were considered published if the data presented at the meeting were identical to that in the publication. The journals in which the data were published were identified, as well as the origin of the research centre. From 2007 to 2012 826 abstracts were featured at the CSRS Europe annual meetings. There were 236 podium presentations and 590 poster presentations. 42 % of the podium presentations resulted in a publication, and 28 % of the poster presentations led to a publication. Overall, 32 % of accepted abstracts effectuated a publication in a peer-reviewed scientific journal. Abstracts from European research groups had a publication rate of 29 % compared to 34 % for abstracts from non-European research groups. Spine, European Spine Journal, Journal of Spinal Disorders and Techniques and J Neurosurgery Spine were the most common publication journals for the abstracts. The mean impact factor of the journals in which was published was 2.2. 42 % of the abstracts that were accepted for podium presentation at the CSRS Europe resulted in a publication in peer-reviewed MEDLINE indexed journals. Publication rates are at the high end of the publication rate spectrum of abstracts accepted for European scientific meetings.
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| 6. |
- Jansson, Anna, et al.
(author)
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An investigation into factors influencing basal eye temperature in the domestic horse (Equus caballus) when measured using infrared thermography in field conditions
- 2021
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In: Physiology and Behavior. - : Elsevier BV. - 0031-9384 .- 1873-507X. ; 228
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Journal article (peer-reviewed)abstract
- Infrared thermography (IRT) is a popular technology used for the detection of thermal changes given its non-invasive nature and lack of direct contact with the individual. Accordingly, the maximal eye temperature (MaxET) measured with IRT has been extensively applied in equine research. However, there is little information available about the potential limitations of the MaxET in field studies. Thus, the aims of this study were to 1) quantify the individual variation of MaxET in field conditions and the effects of individual, breed, body size (height at withers), eye side, sex and age, 2) determine the effects of environment and operator, and 3) explore the relationship between MaxET and rectal temperature (RT) at rest. To accomplish these aims, 791 MaxET measures from 32 horses were collected in Sweden in five different months and five farms over a period of 12 months. There was an effect of individual on IRT (P < .05) and individual MaxET varied from 29.4 to 37.6 degrees C. IRT was also affected (P < .05) by breed and sex (maximal difference 1.1 degrees C and 0.3 degrees C, respectively) but not by eye side, age and height at withers. There were significant effects of month and farm (maximal differences; 2.4 and 2.3 degrees C, respectively), between outdoor and indoor measurements (0.8 degrees C) and also between operators (0.2 degrees C). There were no correlations between MaxET and RT. These results demonstrate that in horses observed at rest in their home environment, MaxET is affected by endogenous (sex and breed) and environmental factors (farm, location and month of the year) and shows no relationship to RT. We strongly suggest that IRT technology should be used with great caution in field studies and only under conditions where these factors can be accurately accounted for.
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| 7. |
- Jansson, Anton, 1983
(author)
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Building or destroying community: the concept of Sittlichkeit in the political thought of Vormärz Germany
- 2020
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In: Global Intellectual History. - : Informa UK Limited. - 2380-1883 .- 2380-1891. ; 5:1, s. 86-103
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Journal article (peer-reviewed)abstract
- The purpose of this article is to emphasise the importance of the concept of Sittlichkeit for understanding the contestation around community and social cohesion during the German Vormärz, the decades before 1848. I will demonstrate the centrality of the concept of Sittlichkeit via a conceptual-historically inspired analysis of the works of three thinkers who were at the centre of the development of German political ideologies of the Vormärz era: the liberal Karl Theodor Welcker, the conservative Friedrich Julius Stahl, and the socialist Wilhelm Weitling. The concept of Sittlichkeit was influenced by the philosophy of Hegel and in various ways concerned the customs and social cohesion of a specific community. I will show how this was the case to different extents in the works of Welcker, Stahl, and Weitling. Concomitant with their respective political convictions, Sittlichkeit for Welcker was connected to constitutional liberties, for Stahl related to a hierarchical godly order, and for Weitling it was something which was oppressive, and needed to be destroyed. This discussion about the centrality of Sittlichkeit will also serve to stress another point: that in Vormärz Germany, political ideologies were formed in close connection with Christianity and Christian theology.
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| 10. |
- Jansson, André, 1972-
(author)
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How to become an "elite cosmopolitan' : The mediatized trajectories of United Nations expatriates
- 2016
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In: European Journal of Cultural Studies. - : SAGE Publications. - 1367-5494 .- 1460-3551. ; 19:5, s. 465-480
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Journal article (peer-reviewed)abstract
- This article provides a Bourdieusian analysis of the mediatized lifeworlds of so-called elite cosmopolitans. Based on interviews with Nordic expatriates employed by United Nations organizations in Geneva, the study looks at how the increasing dependence on new media influences the field of United Nations organizations and the trajectories of cosmopolitan subjects. Theoretically, the analysis builds on two key concepts: communicational doxa, which establishes a link between Bourdieu's field theory and critical mediatization theory; and cosmopolitan capital, understood as a sub-form of cultural capital. The findings suggest that mediatization alters the social conditions for accumulating cosmopolitan capital. However, the appropriation and mastery of new media do not hold any symbolic value as such, but tend to expand the possibilities for making investments in the field without altering its overarching logic. It is also shown that new professional media habits are often interwoven with private communication and the emotional needs associated with highly mobile family lives, thus underlining the indirect nature of mediatization in this context.
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