Blar i Institutt for matematiske fag på tittel
Viser treff 1320-1339 av 2363
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Multigrid preconditioning of the linear elasticity equation
(Master thesis, 2016)Multigrid methods are known to be very efficient linear solvers for 2nd order elliptic PDEs. In this thesis we consider multigrid methods, and the use of such as preconditioners, when solving the linear elasticity equation. ... -
Multilevel Analysis Applied to Fetal Growth Data with Missing Values.
(Master thesis, 2006)Intrauterine growth retardation means that the growth of a fetus is restricted as compared with its biological growth potential. This contributes to an increased risk for illnesses or death of the newborn. Therefore it ... -
Multilevel Analysis Applied to Fetal Growth Data with Missing Values.
(Master thesis, 2006)Intrauterine growth retardation means that the growth of a fetus is restricted as compared with its biological growth potential. This contributes to an increased risk for illnesses or death of the newborn. Therefore it ... -
A multimesh finite element method for the Navier–Stokes equations based on projection methods
(Peer reviewed; Journal article, 2020)The multimesh finite element method is a technique for solving partial differential equations on multiple non-matching meshes by enforcing interface conditions using Nitsche’s method. Since the non-matching meshes can ... -
Multiple Proposal Strategies for Markov Chain Monte Carlo
(Master thesis, 2006)The multiple proposal methods represent a recent simulation technique for Markov Chain Monte Carlo that allows several proposals to be considered at each step of transition. Motivated by the ideas of Quasi Monte Carlo ... -
Multiplicative and semi-multiplicative functions on non-crossing partitions, and relations to cumulants
(Peer reviewed; Journal article, 2023)We consider the group (Ǧ, ∗)of unitized multiplicative functions in the incidence algebra of non-crossing partitions, where “∗” denotes the convolution operation. We introduce a larger group (Ǧ, ∗) of unitized functions ... -
Multiscale Finite Volume Methods: Extension to Unstructured Grids with Applications in Reservoir Simulation
(Master thesis, 2012)In reservoir simulations, one of the biggest challenges is solving large modelswith complex geological properties. Because reservoirs can be several kilome-ters long, and still be geologically inhomogeneous over centimeters, ... -
Multiscale Methods and Flow-based Gridding for Flow and Transport In Porous Media
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:181, Doctoral thesis, 2010)The topic of this thesis is fast and accurate simulation techniques used for simulations of flow and transport in porous media, in particular petroleum reservoirs. Fast and accurate simulation techniques are becoming ... -
Multiscale Modelling of Elastic Parameters
(Master thesis, 2008)Petrophysical properties in general and elasticity in particular have heterogeneous variations over many length scales. In a reservoir model, on which one for example can simulate fluid flow, seismic responses and resisitivity, ... -
Multiscale Simulation of Thermal Flow in Porous Media
(Master thesis, 2016)In this thesis we develop a multiscale method that solves non-isothermal flow in porous media. A sequential formulation is established that decouples corresponding equations into three systems, one pertaining pressure, one ... -
Multistate models in survival analysis using INLA, applied on data for resuscitation after cardiac arrest
(Master thesis, 2022)Levetidsanalyse er studiet av data som beskriver tiden til en bestemt hendelse. Inkludering av flere hendelser er ofte nødvendig for å lage en mer nøyaktig modell av verden, og disse modellene blir referert til som ... -
Multivariate DCC-GARCH Model: -With Various Error Distributions
(Master thesis, 2009)In this thesis we have studied the DCC-GARCH model with Gaussian, Student's $t$ and skew Student's t-distributed errors. For a basic understanding of the GARCH model, the univariate GARCH and multivariate GARCH models in ... -
The multivariate distributions of output streams in a queueing system with preemptive repeat priority
(Peer reviewed; Journal article, 2021)The paper studies a single server queuing system with r types of customers, preemptive repeat priority and an infinite number of positions in the queue. The arrival stream of customers of each type is a Poisson stream. Each ... -
Multivariate Distributions Through Pair-Copula Construction: Theory and Applications
(Master thesis, 2009)It is often very difficult, particularly in higher dimensions, to find a good multivariate model that describes both marginal behavior and dependence structure of data efficiently. The copula approach to multivariate models ... -
Multivariate Gaussian Random Fields: The Stochastic Partial Differential Equation approach
(Doctoral Theses at NTNU, 1503-8181; 2013:206, Doctoral thesis, 2013) -
Multivariate Hermite interpolation of manifold-valued data
(Journal article, 2024)In this paper, we propose two methods for multivariate Hermite interpolation of manifold-valued functions. On the one hand, we approach the problem via computing suitable weighted Riemannian barycenters. To satisfy the ... -
Multivariate log-concave probability density class for structural reliability applications
(Journal article; Peer reviewed, 2017)Structural reliability analysis is conventionally based on a description of uncertainty via a joint probability density function (JPDF). This paper builds on an alternative concept of working with a probability distribution ... -
Multivariate Periodic Wavelets on the Pattern
(Master thesis, 2023)I denne masteren analyserer me bilete og oppdagar kantar ved hjelp av fleirdimensjonale periodiske wavelets og fleirskala-analyse, på engelsk multiresolusion analysis. Me presanterer kongruensklassa til det $d$-variate ... -
Multivariate Public Key Cryptography
(Bachelor thesis, 2022)I denne oppgaven, så er målet å introdusere leseren til noen multivariate offentlig kryptografiske systemer. Vi vil gå gennom tre slike systemer. Disse systemene er Matsumoto Imai, Oil and Vinegar, og Rainbow. Vi vil gå ... -
Multivariate Quadratic Cryptosystems
(Master thesis, 2019)Vi beskriver egenskapene til multivariate ligningssystemer, og både egenskapene til Grøbnerbaser, og hvordan man beregner dem. Videre beskriver vi to multivariate kvadratiske kryptosystemer, kryptosystemet Matsumoto-Imai ...