Department of Mathematics and Physics (TN-IMF): Nye registreringer
Viser treff 41-60 av 319
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Ab initio study: Investigating the adsorption behaviors of polarized greenhouse gas molecules on pillar[5]arenes
(Peer reviewed; Journal article, 2023)Supramolecular organic frameworks (SOFs) based on Pillar[5]arenes (P[5]A) have shown great potential in capturing and separating greenhouse gases. In this study, we investigate the adsorption behaviors of other environmentally ... -
Signal analysis in gravitational wave data
(PhD thesis UiS;, Doctoral thesis, 2024)In this thesis, I study the gravitational wave signals coming from compact objects on both present-stage, and future gravitational wave detectors. The thesis is based on 3 articles, which will be presented after two brief ... -
Log-density gradient covariance and automatic metric tensors for Riemann manifold Monte Carlo methods
(Peer reviewed; Journal article, 2023)A metric tensor for Riemann manifold Monte Carlo particularly suited for nonlinear Bayesian hierarchical models is proposed. The metric tensor is built from symmetric positive semidefinite log-density gradient covariance ... -
A Heterotic Kodaira--Spencer Theory at One-Loop
(Peer reviewed; Journal article, 2023-10)We consider a heterotic version of six-dimensional Kodaira-Spencer gravity derived from the heterotic superpotential. We compute the one-loop partition function and find it can be expressed as a product of holomorphic ... -
Prevalence of bradycardia in 4876 newborns in the first minute after birth and association with positive pressure ventilation: A population-based cross-sectional study
(Peer reviewed; Journal article, 2023)Objective To determine the prevalence of bradycardia in the first minute after birth and association with positive pressure ventilation (PPV). Method A population-based cross-sectional study was conducted from June 2019 ... -
Ab-initio QCD Calculations Impact the Inference of the Neutron-star-matter Equation of State
(Peer reviewed; Journal article, 2023)We demonstrate that ab-initio calculations in QCD at high densities offer significant and nontrivial information about the equation of state of matter in the cores of neutron stars, going beyond that which is obtainable ... -
Fra topologi til algebra til analyse
(Master thesis, 2023) -
Sammenheng mellom dentalt plakk og forkalkninger i arterievegger
(Bachelor thesis, 2022) -
Identification of the flux function of nonlinear conservation laws with variable parameters
(Peer reviewed; Journal article, 2023-09)Machine learning methods have in various ways emerged as a useful tool for modeling the dynamics of physical systems in the context of partial differential equations (PDEs). Nonlinear conservation laws (NCLs) of the form ... -
A new variational discretization technique for initial value problems bypassing governing equations
(Peer reviewed; Journal article, 2023-03)Motivated by the fact that both the classical and quantum description of nature rest on causality and a variational principle, we develop a novel and highly versatile discretization prescription for classical initial value ... -
Real-Time Complex Langevin - A Differential Programming Perspective
(PhD thesis UiS;, Doctoral thesis, 2023)In this thesis, I aim to find solutions to the NP-hard sign-problem that arises when modeling strongly correlated systems in real-time. I will use the complex Langevin (CLE) method, and address its problem of runaway ... -
Can cancer cells inform us about the tumor microenvironment?
(Peer reviewed; Journal article, 2023)Characteristics of the tumor microenvironment (TME) such as the leaky intratumoral vascular network and the density and composition of the desmoplastic extracellular matrix (ECM) contain essential information that determine ... -
Mathematical and Numerical Aspects of Scalar Nonlinear Conservation Laws
(Master thesis, 2023)This thesis delves deeply into numerical solutions to nonlinear conservation laws. It focuses largely on the Method of Characteristics, its application in solving conservation laws, and the implementation of solutions in ... -
The Unicity of a Blow-down.
(Master thesis, 2023)In algebraic geometry, projective varieties are classified up to isomorphism. This involves classifying the varieties up to birational equivalence and classifying nonsingular varieties in each equivalence class up to ... -
Bayesian uncertainty quantification of perturbative QCD input to the neutron-star equation of state
(Peer reviewed; Journal article, 2023)The equation of state of neutron-star cores can be constrained by requiring a consistent connection to the perturbative Quantum Chromodynamics (QCD) calculations at high densities. The constraining power of the QCD input ... -
Learning the nonlinear flux function of a hidden scalar conservation law from data
(Peer reviewed; Journal article, 2023-10)Nonlinear conservation laws are widely used in fluid mechanics, biology, physics, and chemical engineering. However, deriving such nonlinear conservation laws is a significant and challenging problem. A possible attractive ... -
Dybdelæring og tverrfaglighet
(Master thesis, 2023)Da ny læreplan av 2020 ble introdusert, var det spesielt et begrep som stod i fokus - dybdelæring. Hvor tidligere læreplan ønsket at elevene skulle kunne utføre oppgaver gjennom en instrumentell forståelse, skulle elevene ... -
New benchmarks in the modelling of X-ray atomic form factors
(Peer reviewed; Journal article, 2023)Analytical representations of X-ray atomic form factor data have been determined. The original data, f0(s;Z), are reproduced to a high degree of accuracy. The mean absolute errors calculated for all s = sin θ/λ and Z values ... -
Syntese og fotonedbrytningsevaluering av aminoalkoholer og oksazolidiner
(Master thesis, 2023)Synteseforskning på etanolaminer og deres derivater, oksazolidiner, representerer bare en del av den større innsatsen for å bekjempe antibiotikaresistens og utvikle nye strategier for behandling. Antibiotikaresistens er ... -
Modified Kerr and Black Hole Ringdowns
(Master thesis, 2023)In the post-merger phase of a black hole binary system, the remnant object is a perturbed black hole emitting gravitational radiation in the form of Gravitational Waves (quasi-normal modes) before admitting a stable state. ...