Fakultet for naturvitenskap og teknologi: Nye registreringer
Viser treff 1661-1680 av 5304
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Hvordan en programmerer løser matematiske problemer
(Mastergradsoppgave; Master thesis, 2022-05-31)Programmering og problemløsing ble introdusert i matematikkfaget i fagfornyelsen (KD, 2020). Begge disse skulle være overordnede temaer som skulle brukes gjennom matematikkundervisningen. Hvordan arbeid med programmering påvirker problemløsing i matematikk er derfor noe som elevene ville bli direkte påvirket av. Denne relasjonen var det som motiverte utformingen av problemstillingen «Hvordan løser ... -
«Hva legger du merke til?»: En studie av hvordan faglige meningsbrytninger mellom elever styrker demokratilæringen i matematikk
(Mastergradsoppgave; Master thesis, 2022-05-29)Med en verden som stadig blir mer komplekst og konstant er i endring, settes det nye krav til kompetansen elevene trenger for å navigere seg i fremtidens kunnskapssamfunn. Et av de identifiserte områdene fagfornyelsen LK20 vektlegger er demokrati og medborgerskap. Demokratilæringen skal legge grunnlaget for at elevene kan ta stilling til valg som påvirker dem selv, samt det lokale og det ... -
Innsikt i matematisk problemløsning En kvalitativ analyse av videregåendeelevers besvarelser på problemløsningsoppgaver.
(Mastergradsoppgave; Master thesis, 2022-05-27)Hensikten med denne studien er å se på hvordan elever arbeider med matematiske problemløsningsoppgaver. Gjennom studien har jeg besvart problemstillingen: Hvordan oppnår elever innsikt gjennom arbeid med matematiske problemløsningsoppgaver? Studien er gjennomført som en kvalitativ analyse av elevbesvarelser på en videregående skole. Datamaterialet er transkriberte lydopptak samt elevnotater. ... -
Programmering som verktøy for å lære computational thinking - En kvalitativ studie av elevers resonnement i problemløsning med programmering som verktøy.
(Mastergradsoppgave; Master thesis, 2022-05-16)Samfunnets stadige endringer er katalysert av teknologiens utvikling og fremskritt. Samfunnet digitaliseres ytterligere og digitale verktøy er blitt en stor del av menneskets hverdag. Dette har endret kompetansebehovet for fremtiden. For å dekke morgendagens kompetansebehov og holde tritt med samfunnets digitale og teknologiske utvikling har Utdanningsdirektoratet (2020) gjennom kunnskapsløftet 2020 ... -
Killing Tensors in Koutras-McIntosh Spacetimes
(Mastergradsoppgave; Master thesis, 2022-05-15)This thesis is concerned with the (non)existence of Killing Tensors in Koutras-McIntosh spacetimes. Killing tensors are of particular interest in general relativity, because these correspond to conserved quantities for the geodesic motion. For instance, Carter found such a conserved quantity in the Kerr metric which he used to explicitly integrate the geodesic equations. The equation defining ... -
Wachpress Conjecture Restricted To Arrangements Of Three Conics
(Mastergradsoppgave; Master thesis, 2022-05-15)This thesis discusses Wachpress conjecture restricted to arrangements of three conics. Wachpress conjectured the existence of a set of barycentric coordinates, namely Wachpress coordinates, on all polycons. Barycentric coordinates are very useful in many different fields as they can be used to define a finite element approximation scheme with linear precision. This thesis focuses on the conjecture ... -
On the effects of symmetry in the energy balance on a sphere
(Mastergradsoppgave; Master thesis, 2022-05-15)Simple climate models have gathered much attention as they have suggested the possibility of abrupt climate change associated with tipping points. Several simple climate models are found to have multiple equilibria, but in most cases similar equilibria do not appear or become too difficult to find in complex, fully coupled earth system models. In this thesis, we investigate a simple climate model, ... -
Autonomous Navigation in (the Animal and) the Machine
(Doctoral thesis; Doktorgradsavhandling, 2022-07-05)Understanding the principles underlying autonomous navigation might be the most enticing quest the computational neuroscientist can undertake. Autonomous operation, also known as voluntary behavior, is the result of higher cognitive mechanisms and what is known as executive function in psychology. A rudimentary knowledge of the brain can explain where and to a certain degree how parts of a computation ... -
Trans-polar drift-pathways of riverine European microplastic
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-17)High concentrations of microplastic particles are reported across the Arctic Ocean–yet no meaningful point sources, suspension timelines, or accumulation areas have been identified. Here we use Lagrangian particle advection simulations to model the transport of buoyant microplastic from northern European rivers to the high Arctic, and compare model results to the flux of sampled synthetic particles ... -
Securitising the Future: Dystopian Migration Discourses in Poland and the Czech Republic
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-06-09)This paper presents findings of a comparative study carried out in Poland and the Czech Republic, which analysed the societal attitudes towards migration and migrants in Europe. Our research shows that the reaction to migration in Poland and the Czech Republic constitutes a reversed (bottom up) securitisation. Moreover, contrary to the majority of security challenges where the immediate threats are ... -
NMR Backbone Assignment of VIM-2 and Identification of the Active Enantiomer of a Potential Inhibitor
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-01-28)Carbapenem resistance caused by metallo-β-lactamases is a serious global challenge that, if not tackled efficiently, is expected to lead to millions of deaths in the coming decades. Verona-integron encoded metallo-β-lactamase 2 (VIM-2) is a bacterial enzyme that has been reported from multidrug-resistant nosocomial isolates of Pseudomonas aeruginosa and other Gram-negative pathogens. As it hydrolyzes ... -
Structure and Mechanism of a Cold-Adapted Bacterial Lipase
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-05-03)The structural origin of enzyme cold-adaptation has been the subject of considerable research efforts in recent years. Comparative studies of orthologous mesophilic–psychrophilic enzyme pairs found in nature are an obvious strategy for solving this problem, but they often suffer from relatively low sequence identity of the enzyme pairs. Small bacterial lipases adapted to distinctly different ... -
Grounding-line fan formation during an Early Holocene readvance of Aldegondabreen, Svalbard.
(Mastergradsoppgave; Master thesis, 2021-12-10)In this study, two ridge-shaped cross-valley sedimentary landforms, in the lower forefield of Aldegondabreen, a small valley glacier on the west coast of Spitsbergen, Svalbard, were studied to reconstruct the Holocene glacial history of Aldegondabreen prior to the Little Ice Age. Sedimentological and geomorphological methods were used in conjunction with radiocarbon dating to examine the sediments ... -
Stochastic Modelling and Numerical Simulations of Radial Filament Motion and Average Profiles at the Boundary of Fusion Plasmas
(Master thesis; Mastergradsoppgave, 2022-05-15)<p>The boundary region of magnetically confined plasmas is well known to have inherently fluctuating parameters. Advances in experimental measurements and numerical computations have revealed that the fluctuation-driven transport of particles and heat across the magnetic field lines is mainly dominated by the radial motion of blob-like filament structures. These structures, which are localized in ... -
Numerical Simulations of Turbulence at the Boundary of Fusion Plasma
(Mastergradsoppgave; Master thesis, 2022-05-15)Numerical simulations of reduced fluid models describing magnetized plasmas have previously been used to study the boundary of fusion plasmas extensively. A common approximation applied to these models is the so-called Boussinesq approximation. One of the requirements for the Boussinesq approximation to be applicable is that the background particle density is significantly higher than the fluctuations ... -
Greedy weights for matroids
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020-12-19)We introduce greedy weights of matroids, inspired by those for linear codes. We show that a Wei duality holds for two of these types of greedy weights for matroids. Moreover we show that in the cases where the matroids involved are associated to linear codes, our definitions coincide with those for codes. Thus our Wei duality is a generalization of that for linear codes given by Schaathun. In ... -
Evolution of ore-forming fluids in a post-collisional porphyry Cu-Au system: A case study from the Bučim deposit, Republic of North Macedonia
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-04-27)The Bučim porphyry Cu-Au deposit is situated in the westernmost part of the Serbo-Macedonian Massif, Republic of North Macedonia. The deposit is hosted by Precambrian gneisses with tectonically imbedded rare lenses of Palaeozoic amphibolites. The mineralization is spatially associated with intrusions of andesitic to trachyandesitic magmatic bodies. The geochemical signature of the intrusions and ... -
Noise-intensification data augmented machine learning for day-ahead wind power forecast
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-06-10)The day-ahead wind power forecast is essential for the designation of dispatch schedules for the grid and rational arrangement for production planning by power generation companies. This paper specifically investigates the effect of adding noise to the original wind data for forecasting models. Linear regression, artificial neural networks, and adaptive boosting predictive models based on ... -
Evaluating the Predictivity of Virtual Screening for Abl Kinase Inhibitors to Hinder Drug Resistance
(Journal article; Tidsskriftartikkel; Peer reviewed, 2013-06-08)Virtual screening methods are now widely used in early stages of drug discovery, aiming to rank potential inhibitors. However, any practical ligand set (of active or inactive compounds) chosen for deriving new virtual screening approaches cannot fully represent all relevant chemical space for potential new compounds. In this study, we have taken a retrospective approach to evaluate virtual screening ... -
Characteristics and failure mechanisms of the unstable rock slope Dusnjárga
(Mastergradsoppgave; Master thesis, 2022-05-15)Large slowly creeping rock slope deformations, with an annual displacement in the range of millimeters to centimeters, have been prone to rapid catastrophic failures in the past. This master thesis focuses on the unstable rock slope of Dusnjárga in Northern Norway. A sudden rapid failure of Dusnjárga would pose a threat to the local society in Lille Altafjord and Burfjord, due to potential secondary ...