Sökning: "perturbation scheme"
Visar resultat 1 - 5 av 27 avhandlingar innehållade orden perturbation scheme.
1. Heterogeneous Materials - Diffusion, Laplace spectrum and NMR
Sammanfattning : Relations to the effective diffusion constant and the relaxation rate of the time-dependent diffusion coefficient for porous systems are derived from the Laplace operator spectrum. The Padé approximation is then explained in terms of the Laplace operator spectrum. LÄS MER
2. Local Influence Analysis and Cross-over Studies
Sammanfattning : With a special reference to cross-over design models with random individual effects, the purpose of this dissertation is to develop new methodology to detect influential observations in the context of mixed linear models with explicit maximum likelihood estimators (MLEs).Case-weighted perturbation schemes within and between subjects in mixed models are constructed. LÄS MER
3. Influence of Fiber Nonlinearity on the Capacity of Optical Channel Models
Sammanfattning : The majority of today’s global Internet traffic is conveyed through optical fibers. The ever-increasing data demands has pushed the optical systems to evolve from using regenerators and direct-direction receivers to a coherent multi-wavelength network. LÄS MER
4. Analytical Approximation of Contingent Claims
Sammanfattning : This PhD thesis consists of three separate papers. The common theme is methods to calculate analytical approximations for prices of different contingent claims under various model assumptions. The first two papers deals with approximations of standard European options in stochastic volatility models. LÄS MER
5. Explicit Influence Analysis in Crossover Models
Sammanfattning : This dissertation develops influence diagnostics for crossover models. Mixed linear models and generalised mixed linear models are utilised to investigate continuous and count data from crossover studies, respectively. LÄS MER
