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Analysis of Life Regression Models for Censored Data using Pseudo Observations
(Master thesis, 2013)Censoring is a common form for missing data in survival analysis. When a data set is censored, there is only partial knowledge of the survival time of some of the study units. To compensate for this, special techniques and ... -
Analysis of Quantitative Susceptibility Mapping in Healthy Volunteers at 3T and 7T
(Master thesis, 2021)For å anskaffe informasjon vedrørende hjernestrukturer sentrale i diagnosistisering av Parkinsons sykdom og Amyotrofisk lateralsklerose ufører man gjerne manuelle segmenteringer av de interessante regionene (ROIs). Dette ... -
Analysis of The Norwegian Veterinary Institute's Model for Salmon Lice Abundance Prediction
(Master thesis, 2018)Empirical studies have found that lice from salmon farms are a main source of infection of wild salmonids. Due to Norway s responsibility to conserve wild stocks of salmon, Veterinærinstituttet has created a statistical ... -
Analysis of the ZnO/Cu2O Thin Film Heterojunction for Intermediate Band Solar Cell Applications
(Master thesis, 2015)In an attempt to increase the maximum theoretical efficiency of solar cells, one proposed device is called intermediate band solar cells (IBSC). The candidate material system chosen for this study is nitrogen doped cuprous ... -
Analytic Study of Ultracold, Synthetically Spin–Orbit Coupled, Weakly Interacting, Two-Component Bose Gases Residing on Bravais Lattices
(Master thesis, 2018)In this Master's thesis, the behavior of ultracold, synthetically spin orbit coupled, weakly interacting, two-component Bose gases residing on Bravais lattices, is explored analytically. In particular, utilizing a mean ... -
Analytical transmission cross-coefficients for pink beam X-ray microscopy based on compound refractive lenses
(Journal article; Peer reviewed, 2018)Analytical expressions for the transmission cross-coefficients for x-ray microscopes based on compound refractive lenses are derived based on Gaussian approximations of the source shape and energy spectrum. The effects of ... -
Analyzing and improving open-source template matching for orientation mapping based on SPED data
(Master thesis, 2022)Science has become and continues to be more reliant on fast, accurate, precise and understandable computational methods. Most scientific communities have been gravitating towards open source python packages, as python is ... -
Análise da Reflexão 001 da Níquel-Fluorohectorita por Difração de Raios X Síncrotron
(Journal article; Peer reviewed, 2016)In the present work X-ray diffraction was used in order to observe the stable hydration states of the clay nickel-fluorohectorite. The diffraction patterns were measured as function of relative humidity and temperature. ... -
Andreev bound states in Josephson junctions: unconventional pairing symmetries in weak magnetic field and strong-field formalism
(Master thesis, 2017)The supercurrent in the normal region of a superconductor - normal metal - superconductor structure (SNS), when exposed to an external magnetic field, is studied. The current is found via the energy levels of the Andreev ... -
Andreev reflection in altermagnets
(Journal article; Peer reviewed, 2023)Recent works have predicted materials featuring bands with a large spin-splitting distinct from ferromagnetic and relativistically spin-orbit-coupled systems. Materials displaying this property are known as altermagnets ... -
Angle Resolved Relaxation of Spin Currents by Antiferromagnets in Spin Valves
(Peer reviewed; Journal article, 2019)We observe and analyze tunable relaxation of a pure spin current by an antiferromagnet in spin valves. This is achieved by carefully controlling the angle between a resonantly excited ferromagnetic layer pumping the spin ... -
Angle-resolved Photoelectron Spectroscopy of Epitaxial CuFeS2 Thin Films
(Master thesis, 2024)CuFeS2, vanligvis kjent som kopperkis, er en antiferromagnetisk halvleder som har en eksepsjonell høy Néel temperatur på 823 K. Det tette gittermatch med silisium, den hyppige forekomsten av byggeblokker og muligheten til ... -
Anisotropic and controllable Gilbert-Bloch dissipation in spin valves
(Peer reviewed; Journal article, 2019)Spin valves form a key building block in a wide range of spintronic concepts and devices from magnetoresistive read heads to spin-transfer-torque oscillators. We elucidate the dependence of the magnetic damping in the free ... -
Anisotropic depth migration of converted wave data, inversion of multicomponent data to estimate elastic parameters at the seafloor and one-dimensional data-driven inversion
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:210, Doctoral thesis, 2006)The increasing demand for oil and gas in the world today drives the need for new and improved methods for identifying hydrocarbon prospects. The petroleum industry uses information about the subsurface in the exploration ... -
Anisotropic diffusion and the cosmic ray anisotropy
(Journal article; Peer reviewed, 2019)We argue that the diffusion of cosmic rays in the Galactic magnetic field has to be strongly anisotropic. As a result, the number of CR sources contributing to the local CR flux is strongly reduced. The CR density is ... -
Anisotropic long-range spin transport in canted antiferromagnetic orthoferrite YFeO3
(Peer reviewed; Journal article, 2022)In antiferromagnets, the efficient transport of spin-waves has until now only been observed in the insulating antiferromagnet hematite, where circularly (or a superposition of pairs of linearly) polarized spin-waves diffuse ... -
Anisotropic Paramagnetic Meissner Effect by Spin-Orbit Coupling
(Journal article, 2016)Conventional s-wave superconductors repel an external magnetic field. However, a recent experiment [A. Di Bernardo et al., Phys. Rev. X 5, 041021 (2015)] has tailored the electromagnetic response of superconducting ... -
Anisotropic plasmonic Cu nanoparticles in sol-gel oxide nanopillars studied by spectroscopic Mueller matrix ellipsometry
(Journal article; Peer reviewed, 2013)Broadened plasmon resonances of Cu nanoparticles in nanopatterned mixed oxide sol-gel nanopillars are shown to be readily detected by spectroscopic Mueller matrix ellipsometry. The plasmonic nanomaterials are obtained by ... -
Anisotropies and magnetic phase transitions in insulating antiferromagnets determined by a Spin-Hall magnetoresistance probe
(Journal article; Peer reviewed, 2019)Antiferromagnets possess a number of intriguing and promising properties for electronic devices, which include a vanishing net magnetic moment and thus insensitivity to large magnetic fields and characteristic terahertz ... -
Anomalous diffusion in systems with concentration-dependent diffusivity: exact solutions and particle simulations
(Journal article; Peer reviewed, 2020)We explore the anomalous diffusion that may arise as a result of a concentration dependent diffusivity. The diffusivity is taken to be a power law in the concentration, and from exact analytical solutions we show that the ...