Search results for "Matematikk"
showing 10 items of 707 documents
Freeze-out radii extracted from three-pion cumulants in pp, p–Pb and Pb–Pb collisions at the LHC
2014
In high-energy collisions, the spatio-temporal size of the particle production region can be measured using the Bose-Einstein correlations of identical bosons at low relative momentum. The source radii are typically extracted using two-pion correlations, and characterize the system at the last stage of interaction, called kinetic freeze-out. In low-multiplicity collisions, unlike in high-multiplicity collisions, two-pion correlations are substantially altered by background correlations, e.g. mini-jets. Such correlations can be suppressed using three-pion cumulant correlations. We present the first measurements of the size of the system at freeze-out extracted from three-pion cumulant correl…
Konkretiseringsmateriell i arbeid med brøk
2016
Fractions are a complex concept, and many students struggle in their first approach with it. In this study I have considered how 8th grade students used concrete materials in relation to their work with fractions, in light of the socio-cultural perspective of learning. This study was based on this research question: How do students in 8th grade perceive the concept of fraction through the use of concrete materials when solving tasks? To answer this research question, the use of concrete materials was considered with respect to how this contributed to the students' perception of the different aspects related to fractions: fraction as a part of a whole, fraction as measurement, fraction as di…
Implications of fisheries‐induced evolution for population recovery: Refocusing the science and refining its communication
2019
The argument that sufficiently high fishing mortality (selective or not) can effect genetic change in fished populations has gained considerable traction since the late 1970s. The intervening decades have provided compelling experimental and model‐based evidence that fisheries‐induced evolution (FIE) can cause genetic changes in life history, behaviour and body shape, given sufficiently high trait heritability, selection intensity and time. Fisheries‐induced evolution research has also identified or inferred negative implications to population recovery and sustainable yield, prompting calls for evolutionarily enlightened management to reduce the probability of FIE and mitigate its risks. Su…
Spectral function for overoccupied gluodynamics from classical lattice simulations
2019
We study the spectral properties of an overoccupied gluonic system far from equilibrium. Using classical Yang-Mills simulations and linear response theory, we determine the statistical and spectral functions. We measure dispersion relations and damping rates of transversally and longitudinally polarized excitations in the gluonic plasma, and also study further structures in the spectral function.
Terrestrial Inputs Drive Seasonality in Organic Matter and Nutrient Biogeochemistry in a High Arctic Fjord System (Isfjorden, Svalbard)
2020
Climate-change driven increases in temperature and precipitation are leading to increased discharge of freshwater and terrestrial material to Arctic coastal ecosystems. These inputs bring sediments, nutrients and organic matter (OM) across the land-ocean interface with a range of implications for coastal ecosystems and biogeochemical cycling. To investigate responses to terrestrial inputs, physicochemical conditions were characterized in a river- and glacier-influenced Arctic fjord system (Isfjorden, Svalbard) from May to August in 2018 and 2019. Our observations revealed a pervasive freshwater footprint in the inner fjord arms, the geochemical properties of which varied spatially and seaso…
Macroalgae production in Northern Europe: Business and government perspectives on how to regulate a novel blue bioeconomy
2022
Macroalgae biomass production, understood as cultivation and harvesting, is a minor industry in Europe at present, but the sector is recognized as having substantial growth potential. Here, we framed the environmental license as a boundary object between business and authorities and investigated the details of macroalgal licensing procedures in seven Northern European countries (Finland, Estonia, Sweden, Germany, Norway, Iceland, and Scotland). We conducted surveys and interviews with macroalgae companies and licensing authorities to understand the challenges faced by both sides. Generally, macroalgae production in Northern European countries is regulated by environmental and water laws and…
Motivasjon i matematikk hos elever som benytter «Den Virtuelle Matematikkskolen» : en aksjonsforskning der målet er å heve motivasjonen i matematikk …
2016
Masteroppgave matematikkdidaktikk – Universitetet i Agder 2016 The title of this study is “Motivation in mathematics among students using Den Virtuelle Matematikkskolen, translated The virtual school of mathematics. The goal of this study was to increase motivation in mathematics among the children I was teaching, and I tried to do it by introducing and working with the web resource “Den Virtuelle Matematikkskolen-U”, shortned DVM-U. I also wanted to find out which impact work with this resource would have for the students motivation in mathematics, and which implications it would have for my work as their teacher. The issue for this study is: In which ways can introduction and work with DV…
Tidlig algebra : en studie av tidlig algebra med elever på 6. trinn
2016
Masteroppgave matematikkdidaktikk – Universitetet i Agder 2016 The main theme for the research described in this thesis is early algebra. Early algebra is a phase that could fit the gap between arithmetic and algebra. Early algebra includes algebraic reasoning, such as analyzing relationships between quantities, noticing structure, studying change, or generalizing, without a need to use symbols. In my Theoretical Frame, I define the terms early algebra, algebraic thinking, and generalization; I explain the differences between early algebra and pre-algebra, and I go into the relationships between arithmetic and algebra. To gain insight into early algebra, I have studied how pupils in 6th gra…
Tilpasset opplæring for elever med dyskalkuli : en matematikklærer sin beskrivelse
2016
Masteroppgave matematikkdidaktikk – Universitetet i Agder 2016 The main topic of the thesis is how to adapt teaching to students with dyscalculia. In this thesis, the term dyscalculia is accounted for as one of several concepts for students who struggle particularly with mathematics. There is currently a lack of consensus among scientists about which concepts to be used for students with mathematics difficulties and what is meant by the different terms. In the thesis, there is therefore a separate chapter which presents an overview of the literatures use of concepts for students who have learning difficulties in mathematics. The thesis research questions consist of a main question and two s…
Preprinting is positively associated with early career researcher status in ecology and evolution.
2021
Abstract The usage of preprint servers in ecology and evolution is increasing, allowing research to be rapidly disseminated and available through open access at no cost. Early Career Researchers (ECRs) often have limited experience with the peer review process, which can be challenging when trying to build publication records and demonstrate research ability for funding opportunities, scholarships, grants, or faculty positions. ECRs face different challenges relative to researchers with permanent positions and established research programs. These challenges might also vary according to institution size and country, which are factors associated with the availability of funding for open acces…