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- Eek-Karlsson, Liselotte, 1955-
(författare)
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Ungas samspel i sociala medier : Att balansera mellan ansvar och positionering
- 2015
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The growing communication that takes place between young people today causes concern. The purpose of this study is to develop in – depth knowledge of the interaction that young people engage in online. The pedagogic interest is based on an investigation of conditions for social learning and social integration that exist in practice, which unfolds in virtual spaces created by social media. The technology referred to in this thesis is considered to be a social construction, which entails that values circulate between people, technology, and society. The theoretical point of departure is based on a pedagogic theory, which proposes that people develop their ability to cooperate, their social identity, and their understanding of the world through interaction with others. This dissertation includes three studies. The first study investigates support and harassment online (for example, insults). The second study is conducted for the purpose of revealing the discursive patterns in young people’s argumentation, based on a series of interviews. Finally, a text analysis of Facebook’s policy document was performed, with focus on the democratic values that are mediated via this document. The overall result is that considerably more young people feel that they are supported in social media, than those who are harassed. Both a supportive culture and a harassing culture can be defined however. The more often young people support their friends, the more often they find themselves to be the recipient of support. The same relationship pertains for harassing communication. Reciprocity, respect, and being responsible are dominant themes in a close circle of friends. In interaction with friends who are not members of the close circle of friends, communication is characterised by asymmetry and control. The imposition of discipline takes place as a function of both gender and status. The risk of being subject to reprisals is great, if the prevailing system of norms is violated. Young people’s social interaction in virtual spaces tends to be dominated by marketization where strategic behaviour, which primarily is a function of the individual’s social position and profit interest, is observed.
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- Roos, Helena, 1974-, et al.
(författare)
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Promoting basic arithmetic competence in early school years - using a response to intervention model
- 2023
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Ingår i: Journal of Research in Special Educational Needs. - : John Wiley & Sons. - 1471-3802. ; 23:4, s. 263-388
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Tidskriftsartikel (refereegranskat)abstract
- This study investigated whether mathematics education based on a multi-tiered response to intervention (RTI) model can support students' arithmetic competence in primary schools in Sweden. The intent was to identify and support students at risk of failure. In this study, 113 students participated in the intervention, and 30 students participated in the control group. Both groups were followed from Grade 1 to the end of Grade 2 and compared. During the first semester in Grade 1, all students were taught basic addition and subtraction with explicit instructions in Tier 1. Those who did not respond to Tier 1 after one semester were provided support within Tier 2 during the second semester. The same was repeated in grade 2 and the students that did not respond to Tier 2 were supported within Tier 3. At the end of Grade 2, students in the intervention group performed significantly higher on the basic arithmetic competence in the number range 1-9 than the control group. No significant difference was found in a test measuring basic arithmetic competence in the number range 10-19. This study shows that using multi-tiered RTI might be sufficient to identify and support students at risk in early arithmetic competence.
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| 6. |
- Salomé, Nicolas, et al.
(författare)
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On the central mechanism underlying ghrelin's chronic pro-obesity effects in rats: new insights from studies exploiting a potent ghrelin receptor antagonist.
- 2009
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Ingår i: Journal of neuroendocrinology. - : Wiley. - 1365-2826 .- 0953-8194. ; 21:9, s. 777-85
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Tidskriftsartikel (refereegranskat)abstract
- In the present study, we explore the central nervous system mechanism underlying the chronic central effects of ghrelin with respect to increasing body weight and body fat. Specifically, using a recently developed ghrelin receptor antagonist, GHS-R1A (JMV2959), we investigate the role of GHS-R1A in mediating the effects of ghrelin on energy balance and on hypothalamic gene expression. As expected, in adult male rats, chronic central treatment with ghrelin for 14 days, when compared to vehicle-treated control rats, resulted in an increased body weight, lean mass and fat mass (assessed by dual X-ray absorptiometry), dissected white fat pad weight, cumulative food intake, food efficiency, respiratory exchange ratio and a decrease of energy expenditure. Co-administration of the ghrelin receptor antagonist JMV2959 suppressed/blocked the majority of these effects, with the notable exception of ghrelin-induced food intake and food efficiency. The hypothesis emerging from these data, namely that GHS-R1A mediates the chronic effects of ghrelin on fat accumulation, at least partly independent of food intake, is discussed in light of the accompanying data regarding the hypothalamic genes coding for peptides and receptors involved in energy balance regulation, which were found to have altered expression in these studies.
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