Sökning: "asymptotic methods"
Visar resultat 1 - 5 av 166 avhandlingar innehållade orden asymptotic methods.
1. Analysis of adhesively bonded joints : an asymptotic approach
Sammanfattning : Simulations using the Finite Element Method (FEM) play an increasingly important role in the design process of joints and fasteners in the aerospace industry. In order to utilize the potential of using adhesive bonding, there is an increasing need for effective and accurate computational methods. LÄS MER
2. Asymptotic methods applied to some oceanography-related problems
Sammanfattning : In this thesis a number of issues related to oceanographic problems have been dealt with on the basis of applying asymptotic methods. The first study focused on the tidal generation of internal waves, a process which is quantifed by the conversion rates. These have traditionally been calculated by using the WKB approximation. LÄS MER
3. Asymptotic methods in design and characterization ofdiffractive axicons
Sammanfattning : This thesis addresses the subject of diffractive axicons inpartially coherent or oblique illumination. Design andcharacterization of the axicons are performed using asymptoticwave optics, employing the stationary-phase method to obtainapproximations of the diffraction integrals. LÄS MER
4. Algebraic Reconstruction Methods
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 modeled using the Radon transform. After expanding the solution into a finite series of basis functions a large, sparse and ill-conditioned linear system occurs. LÄS MER
5. Identification of stochastic systems : Subspace methods and covariance extension
Sammanfattning : .... LÄS MER