Browsing Fakultet for informasjonsteknologi og elektroteknikk (IE) by Title
Now showing items 10414-10433 of 20393
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Isogeometric analysis of THM coupled processes in ground freezing
(Journal article; Peer reviewed, 2017)An isogeometric analysis (IGA) based numerical model is presented for simulation of thermo-hydro-mechanically (THM) coupled processes in ground freezing. The momentum, mass and energy conservation equations are derived ... -
Isogeometric Analysis Using Locally Refined B-splines
(Doctoral thesis at NTNU;2014:376, Doctoral thesis, 2014) -
Isogeometric analysis using LR B-splines
(Journal article; Peer reviewed, 2014)The recently proposed locally refined B-splines, denoted LR B-splines, by Dokken et al. (2013) [6] may have the potential to be a framework for isogeometric analysis to enable future interoperable computer aided design and ... -
Isogeometric Analysis: Higher-Order Differential Equations
(Master thesis, 2013)This thesis introduces Isogeometric Analysis as a potentional bridge between the Finite Element Analysis (FEA) and Computer Aided Design (CAD) communities. An introduction to B-splines and B-spline-based Isogeometric ... -
Isogeometric boundary element method for acoustic scattering by a submarine
(Journal article; Peer reviewed, 2019)Isogeometric analysis with the boundary element method (IGABEM) has recently gained interest. In this paper, the approximability of IGABEM on 3D acoustic scattering problems will be investigated and a new improved BeTSSi ... -
Isogeometric Collocation - Numerical solution of differential equations
(Master thesis, 2016)This thesis present the theory and implementation of Lagrange polynomial interpolation. We study and implement Splines intended on geometric design and interpolation methods. We explore and implement one dimensional numerical ... -
Isogeometric divergence-conforming variational multiscale formulation of incompressible turbulent flows
(Journal article, 2016)A new residual-based variational multiscale (RBVMS) formulation for incompressible turbulent flows is proposed that is suitable for discretization using divergence-conforming B-splines. The proposed methodology results in ... -
Isogeometric Finite Element Analysis using B-spline Basis Functions: The Poisson Equation and the Biharmonic Equation
(Master thesis, 2013)In this thesis the finite element method with B-spline basis functions was implemented and tested for the Poisson equation and the Biharmonic equation in an isoparametric setting. The equations were solved on a unit square ... -
Isogeometric methods for CFD and FSI-simulation of flow around turbine blades
(Journal article; Peer reviewed, 2015)Coupled fluid-structure interaction simulations of wind turbines have traditionally been considered computationally too expensive to carry out. However, more powerful computers and better solution techniques based on ... -
Isogeometric Methods for Computational Fluid Dynamics: Divergence-conforming Discretizations for the 2D Stokes Equations
(Master thesis, 2014)In this thesis we look at how boundary value problems for partial differential equations can be solved numerically using B-splines, or more generally NURBS, both to express the geometry of the problem exactly and as a basis ... -
Isogeometrisk analyse av Boussinesq ligningene
(Master thesis, 2016)In this master thesis, I have solved the Boussinesq equations with Isogeometric Analysis to study heat transfer coupled with air circulation. The Boussinesq equations consist of the Navier-Stokes equations and the ... -
Isolated Full-Bridge DC-DC Converter Configurations for Photovoltaic Applications using Modular Multilevel Converter
(Master thesis, 2018)As a result of the continuously increasing carbon emissions, the global demand for cleaner energy is rising. Grid-connected photovoltaic (PV) systems is an attractive solution to provide green energy, and PV technology has ... -
Isolated Handwritten Character Recognition of Ancient Hebrew Manuscripts
(Journal article, 2022)Character recognition is widely considered an essential factor in preserving and digitizing historical handwritten documents. While it has shown a significant impact, the character recognition of historical handwritten ... -
Isolated High-Frequency Link PFC Rectifier With High Step-Down Factor and Reduced Energy Circulation
(Peer reviewed; Journal article, 2022)This article presents an isolated single-stage ac–dc high-frequency link full-bridge cycloconverter (HFLC) with high conversion ratio. Despite certain advantages, such topologies gen- erally suffer from transformer leakage ... -
Isolating the Black Box - Exploring the Effects of a Material Interface in Evolution in Materio
(Master thesis, 2015)Evolution in Materio (EiM) is the concept of exploiting intrinsic properties of various materials, or "black boxes", to perform computation. Motivation for EiM is multitudinous; new paradigms for computing, increased ... -
The Isolation Concept in the 5G Network Slicing
(Chapter, 2020)The fifth generation (5G) of cellular networks shall host a number of tenants and provide services tailored to meet a wide range of requirements in terms of performance, dependability and security. Network slicing will be ... -
Isomorphisms of Lᵖ-operator algebras arising from projective group and groupoid representations
(Master thesis, 2022)I denne avhandlingen ser vi hovedsakelig på isomorfiproblemet for den reduserte vridde gruppe- og gruppoide-Lᵖ-operatoralgebraen. For en lokalkompakt gruppe G og en kontinuerlig 2-kosykel σ definerer vi den reduserte ... -
Isosurface Extraction and Visualisation of Binary 3D X-Ray Images of Fibre Structures
(Master thesis, 2005)In this master thesis, the use of an isosurface extraction technique on binary 3D x-ray micro-tomographic images of paper fibres has been examined. Traditionally, volume rendering has been used to visualise the images. In ... -
Issues in Trajectory planning and controlling an industrial Robot's Tool position for accurate passage through sharp Corners of a nominal Path
(Master thesis, 2015)Robot replaces manual labor all over the world every day. The demand for robots is extremely high in the ever growing automated society. The purpose of this master thesis is to improve the performance of an industrial robot ... -
IT architecture flexibility and IT governance decentralisation as drivers of IT-enabled dynamic capabilities and competitive performance: The moderating effect of the external environment
(Peer reviewed; Journal article, 2020)A question of central importance for researchers and practitioners is how information technology (IT) can help firms survive and thrive in turbulent and constantly changing business environments. To address this issue, ...