Search results for "400"
showing 10 items of 1272 documents
Effects of UV Radiation and Diet on Polyunsaturated Fatty Acids in the Skin, Ocular Tissue and Dorsal Muscle of Atlantic Salmon (Salmo salar) Held in…
2010
Article published in Photochemistry and Photobiology, 86 (4): 909-919 JUL-AUG 2010 The effect of UV radiation (UVR) on juvenile Atlantic salmon (Salmo salar) was assessed by measuring the fatty acid (FA) profiles of muscle, dorsal and ventral skin, and ocular tissues following 4-month long exposures to four different UVR treatments in outdoor rearing tanks. Fish were fed two different diets (Anchovy- and Herring-oil based) that differed in polyunsaturated fatty acid (PUFA) concentrations. Anchovy-fed salmon had higher concentrations of ALA (alpha-linoleic acid; 18:3n-3), EPA (eicosapentaenoic acid; 20:5n-3) and DPA (docosapentaenoic acid, 22:5n-3) in their muscle tissues than fish fed the H…
Læringspotensial i en digital interaktiv matematikkundervisning : en analyse av læringspotensialet i geometriundervisningen på 8. trinn med utstrakt …
2016
Masteroppgave matematikkdidaktikk – Universitetet i Agder 2016 The theme of this master thesis is learning potential in mathematical tasks designed for geometry teaching in GeoGebra in 8th grade. This thesis is written in connection to the project Digital interactive mathematics teaching (DIM), where the goal is to create innovative mathematics teaching by using digital tools in a pedagogic context. Previous research has documented that students learning outcome of the teaching is largely influenced and limited by the tasks that are given. In this context analysis of the tasks learning potential is particular interesting. Therefore, my research question is: What learning potential is it in …
Den Virtuelle Matematikkskolen - Ungdomstrinnet : En studie av hvilke pedagogiske konsekvenser bruk av nettressursen DVM-U kan føre med seg
2016
Masteroppgave matematikkdidaktikk – Universitetet i Agder 2016 Many lower secondary school students struggle with mathematics and with motivation in the subject. To improve student achievement and motivation in mathematics, The Norwegian Centre for ICT in Education and The Norwegian Centre for Mathematics Education have developed an online learning resource that contains mathematical examples, exercises and games, called The Virtual School of Mathematics – Lower Secondary (DVM-U). The Norwegian Centre for ICT in Education suggest that DVM-U can be used in preparation of a topic, or as something students can work with if they do not benefit on a satisfactory level from the classroom teaching…
Tilpasset opplæring i matematikk på ungdomsskolen : to læreres begrunnelser for sine tilpasninger
2016
Masteroppgave matematikkdidaktikk – Universitetet i Agder 2016 The theme of this thesis is adapted education with an emphasis on adapting the teaching of mathematics. I have also decided to direct my attention toward students with low attainers. My research question is: "What arguments gives two mathematics teachers in their adaptations in teaching students with low attainers in middle school?" The study discusses how teachers adapt lessons to students with low attainers in the subject. The empirical basically are two mathematics teachers who teach in the same middle school. In this study I have used qualitative methods. The data is collected through a semi-structured interview. The aim has…
Ungdomsskoleelevers bruk av symboler i algebra
2016
Masteroppgave matematikkdidaktikk – Universitetet i Agder 2016 The thesis investigates the challenges students in 10th grade face while learning algebra, algebraic symbols and how they assess the subject. With the use of a theoretical test and semistructured interviews, the thesis aims to answer the following research questions: 1. What challenges do students from lower secondary education encounter while learning algebra? 2. How do these students engage with algebra and what are their views and aspects towards the subject? The thesis serves primarily as a qualitative case study, of three students from lower secondary school. In addition, quantitative research methods have been undertaken b…
Pytagoras si setning på 10. trinn : ei analyse av tre lærebøkers framstilling og ein elevs bruk av ei av lærebøkene
2016
Masteroppgave matematikkdidaktikk – Universitetet i Agder 2016 This text answers two research questions. The first research question is about how three different textbooks for grade 10 presents the Pythagorean theorem through different representations. These representations are geometric, algebraic and textual. The textbooks are Tetra, Faktor and Maximum. The precision of individual representations and the precision between representations is studied. The chronology in the presentation of the representations has also been studied. The conclusion is that the textbooks have different presentations of the Pythagorean theorem. A geometric representation is presented first in all three textbooks…
Automatic evaluation of information provider reliability and expertise
2013
Published version of an article in the journal: World Wide Web. Also available from the publisher at: http://dx.doi.org/10.1007/s11280-013-0249-x Q&A social media have gained a lot of attention during the recent years. People rely on these sites to obtain information due to a number of advantages they offer as compared to conventional sources of knowledge (e.g., asynchronous and convenient access). However, for the same question one may find highly contradicting answers, causing an ambiguity with respect to the correct information. This can be attributed to the presence of unreliable and/or non-expert users. These two attributes (reliability and expertise) significantly affect the quality o…
Measurement of dielectron production in central Pb-Pb collisions at √sNN = 2.76 TeV
2019
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. The first measurement of dielectron (e + e −) production in central (0 – 10 %) Pb – Pb collisions at √sNN=2.76TeV at the LHC is presented. The dielectron invariant-mass spectrum is compared to the expected contributions from hadron decays in the invariant-mass range 0 < mee < 3.5 GeV / c2. The ratio of data and the cocktail of hadronic contributions without vacuum ρ0 is measured in the invariant-mass range 0.15 < mee < 0.7 GeV / c2, w…
Sähköpostin avulla perustelevaan keskusteluun?
1997
Vuorovaikutus muiden ihmisten kanssa edistää argumentointitaitojen ja kriittisen ajattelun kehittymistä. Entä kun vuorovaikutus tapahtuu sähköpostin avulla? – Kirjoittaja väitteli kasvatustieteiden tohtoriksi 7.6.1997 Jyväskylän yliopistossa. Väitöskirjan aiheena oli Studying argumentation in higher education by electronic mail.
“Quam mirabilis per omnen orbem terrae cultura!” Ihminen, ympäristö ja rakennettu maisema antiikin ja 1400-luvun ajattelussa
2016
2000-luvun ympäristöhistorian tutkimuksissa on painotettu ihmisen muovanneen maapallon ulkoasua radikaalisti viimeisimmän 500 vuoden aikana. Kehityksen taustalla on usein nähty teknisen ja tieteellisen kehityksen aiheuttama omanarvontunnon nousu ja ympäristöön kohdistuneet utilitaristiset asenteet. Tässä artikkelissa tarkastellaan uuden ajan alun asenneilmapiirin taustoja. Pääkohteina ovat 1400-luvun italialaiset humanistioppineet, joiden on katsottu esittäneen filosofisesti perusteltuja ihmiskeskeisiä näkemyksiä ja vaikuttaneen merkittävällä tavalla myöhempien luontoon utilitaristisesti suhtautuneiden käsitysten kehitykseen. Artikkelissa tarkastellaan teemoja, joita 1400-luvun kirjoittajie…