Sökning: "Direkt methods"
Visar resultat 1 - 5 av 301 avhandlingar innehållade orden Direkt methods.
1. Bioinformatic Methods in Metagenomics
Sammanfattning : Microbial organisms are a vital part of our global ecosystem. Yet, our knowledge of them is still lacking. Direct sequencing of microbial communities, i.e. LÄS MER
2. The Use of Landweber Algorithm in Image Reconstruction
Sammanfattning : Ill-posed sets of linear equations typically arise when discretizing certain types of integral transforms. A well known example is image reconstruction, which can be modelled using the Radon transform. After expanding the solution into a finite series of basis functions a large, sparse and ill-conditioned linear system arises. LÄS MER
3. Methods for Early Model Validation : Applied on Simulation Models of Aircraft Vehicle Systems
Sammanfattning : Simulation models of physical systems, with or without control software, are widely used in the aeronautic industry in applications ranging from system development to verification and end-user training. With the main drivers of reducing the cost of physical testing and in general enhancing the ability to take early model-based design decisions, there is an ongoing trend of further increasing the portion of modeling and simulation. LÄS MER
4. High Performance Adaptive Finite Element Methods : With Applications in Aerodynamics
Sammanfattning : The massive computational cost for resolving all scales in a turbulent flow makes a direct numerical simulation of the underlying Navier-Stokes equations impossible in most engineering applications. Recent advances in adaptive finite element methods offer a new powerful tool in Computational Fluid Dynamics (CFD). LÄS MER
5. Multiscale Methods for Wave Propagation Problems
Sammanfattning : Simulations of wave propagation in heterogeneous media and at high frequencies are important in many applications such as seismic-, {electro-magnetic-,} acoustic-, fluid flow problems and others. These are classical multiscale problems and often too computationally expensive for direct numerical simulation. LÄS MER
