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Now showing items 1-100 of 101
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
Watson and Holmes propose ways of investigating robustness of statistical decisions by examining certain neighbourhoods around a posterior distribution. This may partly amount to ad hoc modelling of extra uncertainty. ...
(Doctoral thesis / Doktoravhandling, 2016)
(Journal article / Tidsskriftartikkel / SubmittedVersion, 2016)
Biot's consolidation model in poroelasticity has a number of applications in science, medicine, and engineering. The model depends on various parameters, and in practical applications these parameters range over several ...
(Master thesis / Masteroppgave, 2016)
In this thesis we simulate a new model, formulated as a nonlinear filtering problem with a generalized Cox process, for the modeling of transition rates in life insurance. This allows for a time-continuous model which may ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
Detailed observations of the diurnal jet, a surface intensification of the wind-driven current associated with the diurnal cycle of sea surface temperature (SST), were obtained during August and September 2012 in the ...
(Master thesis / Masteroppgave, 2016)
This thesis presents an experimental investigation on the occurrence of freak waves in a bimodal sea. The bimodal sea consisted of two wave systems traveling in the same direction, with different peak frequencies f_{Pj} ...
(Master thesis / Masteroppgave, 2016)
We have used the level - set function to divide a computational domain into a solid region and a fluid region to create an idealized model of blood flow in narrow cerebral arteries to simulate the mechanotransduction in ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
For many high-dimensional studies, additional information on the variables, like (genomic) annotation or external p-values, is available. In the context of binary and continuous prediction, we develop a method for adaptive ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
In the Barents Sea and adjacent water, fishing grounds are closed for shrimp fishing by the Norwegian Directorate of Fisheries Monitoring and Surveillance Service (MSS) if the expected number of juvenile fish caught are ...
(Doctoral thesis / Doktoravhandling, 2016)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
Dynamical downscaling of earth system models is intended to produce high-resolution climate information at regional to local scales. Current models, while adequate for describing temperature distributions at relatively ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
The paper discusses the development of a frequency dependent directional spread from an initial condition of frequency-independence. The study applies basin directional measurements from the Maritime Research Institute ...
(Master thesis / Masteroppgave, 2016)
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
(Master thesis / Masteroppgave, 2016)
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
We study stochastic differential games of jump diffusions, where the players have access to inside information. Our approach is based on anticipative stochastic calculus, white noise, Hida–Malliavin calculus, forward ...
(Journal article / Tidsskriftartikkel / SubmittedVersion, 2016)
We combine stochastic control methods, white noise analysis, and Hida–Malliavin calculus applied to the Donsker delta functional to obtain explicit representations of semimartingale decompositions under enlargement of ...
Modellering av norske kortrenter - Med Levy semistasjonære prosseser Restricted Access
(Master thesis / Masteroppgave, 2016)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
libRadtran is a widely used software package for radiative transfer calculations. It allows one to compute (polarized) radiances, irradiance, and actinic fluxes in the solar and thermal spectral regions. libRadtran has ...
(Journal article / Tidsskriftartikkel / SubmittedVersion, 2016)
Direct Numerical Simulations (DNS) of the Navier Stokes equations is an invaluable research tool in fluid dynamics. Still, there are few publicly available research codes and, due to the heavy number crunching implied, ...
(Research report / Forskningsrapport, 2016)
(Master thesis / Masteroppgave, 2016)
Målet med denne masteroppgaven er å se på teorien som ligger til grunn for en rangeringsmodell kalt Offense-Defense Modellen. Jeg skriver om matriseskaleringer og dobbeltstokastiske matriser som ender med Sinkhorn-Knopp ...
(Master thesis / Masteroppgave, 2016)
Denne oppgaven er skrevet i faget MAT5930L, som er det siste faget i Lektorprogrammet ved UiO. Emnet er Euklids Elementer. Vi ser på noen av proposisjonene i de tre første bøkene av Elementer. Her fokuserer vi på hvordan ...
(Master thesis / Masteroppgave, 2016)
Norway has been suffering from numerous natural disasters throughout its history. In order to be able to compensate losses caused by natural disasters such as storm, flood, earthquake, avalanche or other natural disasters, ...
(Master thesis / Masteroppgave, 2016)
Syringomyelia is a progressive disease where fluid filled cavities develop inside the spinal cord, and is frequently seen together with Chiari Malformation I (CMI). CMI is characterized by downwards displacements of the ...
(Master thesis / Masteroppgave, 2016)
Optimal stopping problems and the weak variational inequalites Restricted Access
(Master thesis / Masteroppgave, 2016)
This thesis studies a relationship between solving optimal stopping problems and solving the weak variational inequalites. We prove a theorem that presents conditions under which the weak variatonal inequalities have a ...
(Master thesis / Masteroppgave, 2016)
An ambitmodell for swaper. Restricted Access
(Master thesis / Masteroppgave, 2016)
(Master thesis / Masteroppgave, 2016)
(Master thesis / Masteroppgave, 2016)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
Objective A number of observational studies have shown an inverse association between circulating 25-hydroxyvitamin D and total mortality, but a reverse J-shaped association has also been reported. In a large nested ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
In the present paper, a three-component, stationary, multistate flow network system is studied. Detailed costs and incomes are specified. The aim is to minimize the expected total net loss with respect to the expected times ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
We prove that if a closed subset X of the Baire space is searchable in the sense of Escardó [Logical Methods in Computer Science 4(3) (2008), 3], and by a functional definable in Gödel’s T, then X is countable, and the ...
Linear stability of the boundary layer under internal solitary waves Restricted Access
(Master thesis / Masteroppgave, 2016)
(Master thesis / Masteroppgave, 2016)
The numerical solution of differential equations is an algorithmic process with various parameters controlling the accuracy, stability and computational time of the simulation. In Computational Fluid Mechanics (CFD) there ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
We introduce the notion of accurate foundation sets and the accurate refinement property for right LCM semigroups. For right LCM semigroups with this property, we derive a more explicit presentation of the boundary quotient. ...
(Chapter / Bokkapittel / PublishedVersion; Peer reviewed, 2016)
We introduce Bichromatic Synthetic Schlieren (BiCSS) for instantaneous surface measurements, in where we use two simultaneous images taken at blue and near infrared wavelengths, making use of that refractive index variation ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
We investigate the K -theory of unital UCT Kirchberg algebras QS arising from families S of relatively prime numbers. It is shown that K∗(QS) is the direct sum of a free abelian group and a torsion group, each of which is ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
We show that a pseudoeffective R-divisor has numerical dimension 0 if it is numerically trivial on a subvariety with ample normal bundle. This implies that the cycle class of a curve with ample normal bundle is big, which ...
(Master thesis / Masteroppgave, 2016)
The purpose of this thesis is to study the hedging of financial derivatives, using the so-called local risk-minimizing strategy, which is a popular quadratic hedging strategy in incomplete markets. The local risk minimization ...
Sparse Matrix Storage Schemes with OpenCL for a Linear System arising from a Discrete Model of Elasticity Restricted Access
(Master thesis / Masteroppgave, 2016)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
A matrix of the form A = BBT where B is nonnegative is called completely positive (CP). Berman and Xu (2005) investigated a subclass of CP-matrices, called f0, 1g-completely positive matrices. We introduce a related concept ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
We prove that the Farrell–Jones assembly map for connective algebraic K -theory is rationally injective, under mild homological finiteness conditions on the group and assuming that a weak version of the Leopoldt–Schneider ...
(Chapter / Bokkapittel / PublishedVersion; Peer reviewed, 2016)
The aim of this study is to measure velocity fields and accurate surface elevation in solitary waves utilizing a fast Xray PTV system. It is difficult to measure the free surface of water waves with the optical measurement ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
We show that four well-known kinds of generalized barycentric coordinates in convex polygons share a simple monotonicity property: the coordinate function associated with a vertex is increasing along any line from the ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
For the space of \(C^3\) quintics on the Powell–Sabin 12-split of a triangle, we determine explicitly the six symmetric simplex spline bases that reduce to a B-spline basis on each edge and have a positive partition of ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
Using the notion of multivariate lower set interpolation, we construct nodal basis functions for the serendipity family of finite elements, of any order and any dimension. For the purpose of computation, we also show how ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
It is known that generalized barycentric coordinates (GBCs) can be used to form Bernstein polynomial-like functions over a polygon with any number of sides. We propose to use these functions to form a space of continuous ...
(Journal article / Tidsskriftartikkel / SubmittedVersion, 2016)
We consider Dolbeault–Dirac operators on quantized irreducible flag manifolds as defined by Krähmer and Tucker-Simmons. We show that, in general, these operators do not satisfy a formula of Parthasarathy–type. This is a ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
We construct a new 20-dimensional family of projective six-dimensional irreducible holomorphic symplectic manifolds. The elements of this family are deformation equivalent with the Hilbert scheme of three points on a K3 ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
This study presents an experimental investigation of plunging breakers on a sloping beach with an inclination of 5.1°. The incident waves are solitary waves with various amplitudes from non-breaking waves to plunging ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
We treat a stochastic integration theory for a class of Hilbert-valued, volatility-modulated, conditionally Gaussian Volterra processes. We apply techniques from Malliavin calculus to define this stochastic integration as ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
We classify up to isomorphism all non-Kac compact quantum groups with the same fusion rules and dimension function as SU(n). For this we first prove, using categorical Poisson boundary, the following general result. Let G ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
Observations of wave propagation in landfast ice were obtained in Tempelfjorden, Svalbard during March 2015. Wave motion was measured near the ice edge using inertial motion units and consisted of a combination of swell ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
Motivated by the relation between the Drinfeld double and central property (T) for quantum groups, given a rigid C*-tensor category C and a unitary half-braiding on an ind-object, we construct a *-representation of the ...
(Journal article / Tidsskriftartikkel / SubmittedVersion, 2016)
The admission flow generated by a parallel valve diesel engine cylinder head was investigated by planar and stereoscopic Particle Image Velocimetry in a steady flow test bench through measurements in the swirl and tumble ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
We prove a verification theorem for a class of singular control problems which model optimal harvesting with density-dependent prices or optimal dividend policy with capital-dependent utilities. The result is applied to ...
(Master thesis / Masteroppgave, 2016)
In this thesis, we first present an overview of monotone regression, both in the classical setting and in the high dimensional setting. High dimensional data means that the number of covariates, p, exceeds the number of ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
Background
The addition of annual MRI screening to mammography has heightened optimism that intensive screening along with improved treatments may substantially improve life expectancy of women at high risk of breast ...
(Doctoral thesis / Doktoravhandling, 2016)
(Master thesis / Masteroppgave, 2016)
(Master thesis / Masteroppgave, 2016)
The spread of salmon lice has long been and continues to be an increasing problem for the fish farming industry, causing economic and environmental problems. In this thesis, in cooperation with the Norwegian Veterinary ...
Customer Duration and Profitability in General Insurance Restricted Access
(Master thesis / Masteroppgave, 2016)
In general insurance, the expected duration of a customer relationship is of great interest since retaining an existing customer is much cheaper than acquiring a new one from an administrative point of view. The expected ...
(Master thesis / Masteroppgave, 2016)
In this thesis, we consider applications of directed algebraic topology in optimization theory, by representing directed graphs as directed topological spaces. We review the classical max-flow min-cut theorem and a ...
(Master thesis / Masteroppgave, 2016)
(Master thesis / Masteroppgave, 2016)
Reserving against future claims and settlements is vital for insurance companies, in the sense that it influences how they may price their products and the solvency of the insurance company. This thesis will present and ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
We have released a software named EuroForMix to analyze STR DNA profiles in a user-friendly graphical user interface. The software implements a model to explain the allelic peak height on a continuous scale in order to ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
The investigation of the performance of models to interpret complex DNA profiles is best undertaken using real DNA profiles. Here we used a data set to reflect the variety typically encountered in real casework. The ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
We study a coupled system of controlled stochastic differential equations (SDEs) driven by a Brownian motion and a compensated Poisson random measure, consisting of a forward SDE in the unknown process X(t) and a predictive ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
A celebrated financial application of convex duality theory gives an explicit relation between the following two quantities:
(i) The optimal terminal wealth X^*(T) : = X_{\varphi ^*}(T) of the problem to maximize the ...
(Master thesis / Masteroppgave, 2016)
(Doctoral thesis / Doktoravhandling, 2016)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
Given a Hopf algebra A graded by a discrete group together with an action of the same group preserving the grading, we define a new Hopf algebra, which we call the graded twisting of A. If the action is by adjoint maps, ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
Complexes of discrete distributional differential forms are introduced into finite element exterior calculus. Thus, we generalize a notion of Braess and Schöberl, originally studied for a posteriori error estimation. We ...
(Doctoral thesis / Doktoravhandling, 2016)
(Master thesis / Masteroppgave, 2016)
En polytop er et legeme i det euklidske rom som avgrenses av et endelig antall hyperplan. Vi kan legge på ulike begrensninger på polytopene og få et ulikt utvalg polytoper. I denne avhandlingen ser vi på polytoper av ulik ...
(Master thesis / Masteroppgave, 2016)
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
Within the framework of finite element systems, we show how spaces of differential forms may be constructed, in such a way that they are equipped with commuting interpolators and contain prescribed functions, and are minimal ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
We show how the high order finite element spaces of differential forms due to Raviart-Thomas-Nédelec-Hiptmair fit into the framework of finite element systems, in an elaboration of the finite element exterior calculus of ...
(Master thesis / Masteroppgave, 2016)
A detailed study of computable iterations of Gödel-sentences, both in normal recursion and generalisations to other recursive theories.
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
We consider the pricing problem facing a seller of a contingent claim. We assume that this seller has some general level of partial information, and that he is not allowed to sell short in certain assets. This pricing ...
(Doctoral thesis / Doktoravhandling, 2016)
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
The Bruhat order is defined in terms of an interchange operation on the set of permutation matrices of order n which corresponds to the transposition of a pair of elements in a permutation. We introduce an extension of ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
A matrix with a nonzero nonnegative vector in its null space is called central . We study classes of central matrices having zero column sums. The study is motivated by an engineering application concerning induction ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
We study the a priori error analysis of finite element methods for Biot’s consolidation model. We consider a formulation which has the stress tensor, the fluid flux, the solid displacement, and the pore pressure as unknowns. ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
In this paper we continue our study of logarithmic topological Hochschild homology. We show that the inclusion of the connective Adams summand ℓ into the p-local complex connective K-theory spectrum ku(p), equipped with ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
We initiate the study of the internal structure of C*-algebras associated to a left cancellative semigroup in which any two principal right ideals are either disjoint or intersect in another principal right ideal; these ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
A well known property of a harmonic function in a ball is that its value at the centre equals the mean of its values on the boundary. Less well known is the more general property that its value at any point x equals the ...
(Master thesis / Masteroppgave, 2016)
Traditionally the compressive sensing theory have been focusing on the three principles of sparsity, incoherence and uniform random subsampling. Recent years research have shown that these principles yield insufficient ...
(Master thesis / Masteroppgave, 2016)
This thesis aims to study the risk measure Conditional Value-at-Risk and analyse an optimization problem of maximizing expected return subject to this risk measure. The analysis include performing Fourier-Motzkin eliminations ...
(Master thesis / Masteroppgave, 2016)
In this thesis we will study the phase space, Ph(A), for an associative k-algebra A. The phase space can be considered as a noncommutative tangent bundle. We will derive algebraic notions of points, curves, tangent vectors ...
(Master thesis / Masteroppgave, 2016)
Denne oppgaven studerer Reed-Solomon-koder og ser på hvordan dekoding av disse kan relateres til å finne potenssumdekomposisjoner av polynomer, hvilket kan tolkes geometrisk som å finne et sekantplan til den rasjonale ...
(Master thesis / Masteroppgave, 2016)
An important aspect in portfolio optimization is the quantification of risk. Variance was the starting point, as proposed by Harry Markowitz in the 1950’s, but it’s obviously flawed since it measures high returns as risk. ...
(Master thesis / Masteroppgave, 2016)
The study of generic quartic symmetroids in projective 3-space dates back to Cayley, but little is known about the special specimens. This thesis sets out to survey the possibilities in the non-generic case. We prove that ...
(Master thesis / Masteroppgave, 2016)
In their article, "Continuity of the Spectrum of a Field of Self-Adjoint Operators", Beckus and Bellissard discuss the following problem: Given a family of bounded, self-adjoint linear operators indexed by a parameter t ...
(Master thesis / Masteroppgave, 2016)
Parallellaksiomet er det eneste aksiomet der hyperbolsk geometri skiller seg fra euklidsk. Mens det i euklidsk geometri er en unik linje som går gjennom et gitt punkt og er parallell med en gitt linje, finnes det i hyperbolsk ...
(Master thesis / Masteroppgave, 2016)
Avhandlingen er en del av en større forskning på bimodal sjø. Det er gjort eksperimenter med vindsjø sammen med dønnning, samt bikromatisk bølge bestående av en kort bølge ridende på dønning er genrert i bølgetanken. Det ...
(Master thesis / Masteroppgave, 2016)
This master thesis presents a laboratory investigation of wave slamming forces on a vertical cylinder in deep and intermediate water. The technique of frequency focusing of the incoming wave field allows for generation of ...
(Master thesis / Masteroppgave, 2016)