Browsing Institutt for matematiske fag by Title
Now showing items 1844-1863 of 2527
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Quantum Harmonic Analysis on Lattices and Gabor Multipliers
(Peer reviewed; Journal article, 2020)We develop a theory of quantum harmonic analysis on lattices in R2d. Convolutions of a sequence with an operator and of two operators are defined over a lattice, and using corresponding Fourier transforms of sequences and ... -
Quantum harmonic analysis on locally compact groups
(Journal article; Peer reviewed, 2023)On a locally compact group we introduce covariant quantization schemes and analogs of phase space representations as well as mixed-state localization operators. These generalize corresponding notions for the affine group ... -
Quasi Monte Carlo Methods For Hyperbolic Conservation Laws With Uncertain Initial Data
(Master thesis, 2016)We consider solving stochastic hyperbolic conservation laws with a quasi Monte Carlo method based on Sobol sequences. As far as we are aware, no one has done any research on this specific combination before. We extend an ... -
Quasi-linear functionals : theory and applications
(Doctoral thesis, 2001) -
Quasi-Static & Dynamic Numerical Modeling of Full Scale NREL 5MW Wind Turbine
(Journal article; Peer reviewed, 2017)Simulations of the National Renewable Energy Laboratory (NREL) 5MW wind turbine under quasi-static Multiple Reference Frame (MRF) and dynamic Sliding Mesh Interface (SMI) methodologies are presented. Two reference zone ... -
The quasi-static plasmonic problem for polyhedra
(Peer reviewed; Journal article, 2022)We characterize the essential spectrum of the plasmonic problem for polyhedra in R3. The description is particularly simple for convex polyhedra and permittivities ϵ<−1. The plasmonic problem is interpreted as a spectral ... -
Questioning questioning: The "why" and "how" of mathematics
(Master thesis, 2021)Utdannere og lærere er alltid på utkikk etter nye måter å forbedre sin undervisningskompetanse og metoder. Gjennom bruk av teknologi har vi utvidet utdanningsfeltet gjennom de siste tiårene med innovative og unike måter å ... -
Quipu Quivers and Nakayama Algebras with Almost Separate Relations
(Journal article; Peer reviewed, 2023)A Nakayama algebra with almost separate relations is one where the overlap between any pair of relations is at most one arrow. In this paper we give a derived equivalence between such Nakayama algebras and path algebras ... -
Quivers and admissible relations of tensor products and trivial extensions
(Master thesis, 2011)We show how to find quotients of path algebras isomorphic to tensor products, triangular matrix algebras and trivial extensions. -
Quivers, Gröbner bases, and tensor products
(Master thesis, 2022)Vi presenterer teori for Gröbner-basis i algebraer med multiplikativ basis, og spesielt for Gröbner-basis i vei-algebraer. Vi viser hvordan man kan konstruere tensorproduktet $\Lambda \otimes_K \Gamma$ av algebraer $\Lambda$ ... -
R1-elevers begrepsbilde av bevis i geometri - En studie av R1-elevers syn på bevis i geometri, og samspillet mellom begrepsbilder av bevis og argumentasjon
(Master thesis, 2018)Denne studien tar for seg hvordan R1-elevers begrepsbilde av bevis ser ut i geometri, hvordan elevene argumenterer i geometri, og hvilken sammenheng det er mellom elevers begrepsbilde av bevis og hvordan de argumenterer. ... -
Radical cube zero self injective algebras and support varieties
(Doctoral thesis at NTNU;2015:157, Doctoral thesis, 2015) -
Railway condition monitoring applying the continuous and discrete wavelet transforms
(Master thesis, 2020)Den diskrete og den kontinuerlige bølgetransformasjonen er anvendt på geometrimålinger som en metode for å overvåke sporgeometri i den danske jernbanens sporvekslinger. Geometrimålinger samles regelmessig for hele ... -
Rapid Seismic Inversion for Isolated Singularities
(Master thesis, 2008)Thin layers can cause problems in inversion algorithms as the material parameters and the thickness of the layer are inseparable. Here a thin layer model is developed where a thin sand layer embedded in shale is considered ... -
Rational local systems and connected finite loop spaces
(Peer reviewed; Journal article, 2021)Greenlees has conjectured that the rational stable equivariant homotopy category of a compact Lie group always has an algebraic model. Based on this idea, we show that the category of rational local systems on a connected ... -
Rational Noncommutative Tori and Gabor Frames
(Master thesis, 2016)A link between noncommutative geometry and time-frequency analysis is used to show that the TKNN equation violates existence results for Gabor frames with atoms in the Schwartz space. In particular, we use that the Schwartz ... -
Rational Tambara functors
(Doctoral theses at NTNU;2017:95, Doctoral thesis, 2017) -
Real time ultrasound simulation: Application to a medical training simulator
(Master thesis, 2008)As ultrasound technology today finds new applications and becomes available to more and more users, the demand for good training procedures and material increases. This has motivated a research project aimed at developing ... -
Real-time forecasting of emergency department arrivals using prehospital data
(Journal article; Peer reviewed, 2019)Background: Crowding in emergency departments (EDs) is a challenge globally. To counteract crowding in day-to-day operations, better tools to improve monitoring of the patient flow in the ED is needed. The objective of ... -
Real-Valued Algebro-Geometric Solutions of the Two-Component Camassa–Holm Hierarchy
(Journal article; Peer reviewed, 2017)We provide a construction of the two-component Camassa– Holm (CH-2) hierarchy employing a new zero-curvature formalism and identify and describe in detail the isospectral set associated to all real-valued, smooth, and ...