Blar i Institutt for matematiske fag på tittel
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Video understanding with the Youtube-8M dataset
(Master thesis, 2022)I dette prosjektet ble dyplæringsmodeller trent på Youtube-8M datasettet, som er et stort benchmark for for multi-label videoklassifisering, og evaluert ved hjelp av F1-score. De trente modellene brukte forskjellige metoder ... -
Viscosity solutions of p-Laplace type equations
(Doctoral theses at NTNU;2020:263, Doctoral thesis, 2020) -
Volatility and Dependence in Fixed Income Forward Rates with Application to Market Risk of Derivative Portfolios
(Master thesis, 2006)This thesis explores the modeling of volatility and dependence in forward rates in the fixed income market for the purpose of risk estimation in derivative portfolios. A brief background on popular quantile-based risk ... -
Volterra operators on Hardy spaces of Dirichlet series
(Journal article; Peer reviewed, 2019)For a Dirichlet series symbol g.s/ D P n 1 bnn s , the associated Volterra operator Tg acting on a Dirichlet series f .s/ D P n 1 ann s is defined by the integral f 7! Z C1 s f .w/g0 .w/ dw: We show that Tg is a bounded ... -
Vote Selling Resistant Voting
(Peer reviewed; Journal article, 2020)Creating a secure (purely) remote voting scheme which prevents active vote selling is an open problem. Observing that vote selling has a primarily economic motivation, we propose a novel approach to the problem which ... -
Vurdering av matematisk problemløsning: En studie av sammenhengen mellom fokuset på problemløsning i læreplanen i matematikk og oppgavene som gis på eksamen
(Master thesis, 2009)Masteroppgaven fokuserer på vurdering av matematisk problemløsning i grunnskolen under det norske læreplanverket, L97. Den overordnende problemstillingen er: Hvordan er sammenhengen mellom fokuset på problemløsning i ... -
WalnutDSA: Another attempt at braid group cryptography
(Master thesis, 2019)Hovedformålet med denne oppgaven er å studere det digitale signatursystemet WalnutDSA, som ble foreslått til det amerikanske National Institute of Standards and Technology (NIST) sin ``Post-Quantum Cryptography Standardization'' ... -
Wavefront aberration correction in medical ultrasound imaging
(Doktoravhandlinger ved NTNU, 1503-8181; 2004:165, Doctoral thesis, 2004)Medisinsk ultralydavbildning er et relativt rimelig verktøy som er i utstrakte bruk på dagens sykehus og tildels også legekontor. En underliggende antakelse ved dagens avbildningsteknikker er at vevet som skal avbildes i ... -
Wavelet Techniques in Medical Imaging: Classification of UltraSound Images using the Windowed Scattering Transform
(Master thesis, 2014)In this thesis we will study wavelet techniques for image classification in ultrasound(US) images. The aim is to develop a method for classifying the degree of inflammation in finger-joints.We develop and apply the techniques ... -
Wavelets and irregular time series
(Master thesis, 2012)In this thesis we study time series containing pressure measurements from a three phase flow pipeline at the Ekofisk oil field. The pipeline transports a mixture of oil, water and gas from $15$ wells for approximately ... -
Waves in Excitable Media
(Master thesis, 2012)This thesis is dedicated to the study of Barkley's equation, a stiff diffusion-reaction equation describing waves in excitable media. Several numerical solution methods will be derived and studied, range from the simple ... -
Weighted approximation in C
(Journal article; Peer reviewed, 2019)We prove that if {φj}j is a sequence of subharmonic functions which are increasing to some subharmonic function φ in C , then the union of all the weighted Hilbert spaces H(φj) is dense in the weighted Hilbert ... -
Well-Posedness of a Fractional Mean Field Game System with Non-Local Coupling
(Master thesis, 2017)We prove existence and uniqueness of classical solutions for a fractional Mean Field Game system with non-local coupling, where the fractional exponent is greater than 1/2. To our knowledge this is not proven before in ... -
Wettability Index for Reservoir Simulation and History Matching Core Displacement Experiments
(Master thesis, 2008)A fully coupled formulation for three-phase capillary pressure and relative permeability, the flow parameters, with hysteresis and miscibility capabilities have been established. This work presents an extension to this ... -
What can observational data reveal about metacommunity processes?
(Peer reviewed; Journal article, 2019)A key challenge for community ecology is to understand to what extent observational data can be used to infer the underlying community assembly processes. As different processes can lead to similar or even identical patterns, ... -
What is a post-Lie algebra and why is useful in geometric integration
(Journal article; Peer reviewed, 2018)We explain the notion of a post-Lie algebra and outline its role in the theory of Lie group integrators. -
Whole-genome sequencing analysis of the cardiometabolic proteome
(Journal article; Peer reviewed, 2020)The human proteome is a crucial intermediate between complex diseases and their genetic and environmental components, and an important source of drug development targets and biomarkers. Here, we comprehensively assess the ... -
Wick polynomials in non-commutative probability: A group-theoretical approach
(Journal article; Peer reviewed, 2021) -
A Wiener Tauberian theorem for operators and functions
(Peer reviewed; Journal article, 2021)We prove variants of Wiener's Tauberian theorem in the framework of quantum harmonic analysis, i.e. for convolutions between an absolutely integrable function and a trace class operator, or of two trace class operators. ... -
Workflow for Sensitivity Analysis and Decision Making on the Lower Limit of the Mud-Weight Window in an Overpressured Formation
(Peer reviewed; Journal article, 2020)When drilling a well it is important to choose a reasonable mud density to ensure safe operations. This is not a trivial task because a balanced mud-weight has a complex relation to the uncertain formation conditions and ...