Now showing items 31-40 of 392
Punktprosessmodeller for linjetransektdata
(The University of Bergen, 2010-04-27)
Oppgaven omhandler punktprosesser som modell for observasjoner ved en transektlinje. Hovedprosessen er en Markovmodulert Poissonprosess som tillater at punkter opptrer oftere i noen perioder enn andre, den er her begrenset ...
Solitoner generert av trykkperturbasjon på grunt vann
(The University of Bergen, 2003)
A 3D computational study of effective medium methods applied to fractured media
This work evaluates and improves upon existing effective medium methods for permeability upscaling in fractured media. Specifically, we are concerned with the asymmetric self-consistent, symmetric self-consistent, and ...
Computer-aided proofs and algorithms in analysis
(The University of Bergen, 2013-06-14)
The computational power has increased dramatically since the appearance of the first computers, making them a vital tool in the analysis of dynamical systems. We present further applications of those two basic ideas, ...
Histological type and grade of breast cancer tumors by parity, age at birth, and time since birth: a register-based study in Norway
(BioMed Central, 2010-05-21)
Background Some studies have indicated that reproductive factors affect the risk of histological types of breast cancer differently. The long-term protective effect of a childbirth is preceded by a short-term adverse ...
Multidimensional Fourier Transform on Sparse Grids
(The University of Bergen, 2009-06-01)
When working on multidimensional problems, the number of points needed when using a tensor product grid. This is known as the curse of dimensionality. In this thesis we propose a set of sparse grids, which can be used to ...
Stochastic chain-ladder models in nonlife insurance
(The University of Bergen, 2008)
This thesis examines the stochastic models which reproduce chain-ladder estimates used in reserve estimation for nonlife insurance. The chain-ladder method provides no information regarding the variability of the outcome, ...
Finite-Element Modelling of Buoyancy-Driven Flow in Natural Geothermal Systems
(The University of Bergen, 2010-05-27)
Finite element modelling of buoyancy driven flow in geothermal systems is presented in this thesis. The main focus is on the development of a numerical modelling tool. The program developed is tested for classical benchmarks ...
Implications of Protected Areas to Optimal Management of Marine Resources
(The University of Bergen, 2005)
The thesis explores how the introduction of a marine protected area influences the optimal management of a marine resource, i.e. fish stock. Logistic growth functions are applied to a deterministic model with a migration ...
The impact of local-scale processes on large-scale CO2 migration and immobilization
Storage security of injected carbon dioxide (CO2) is an essential component of risk management for geological carbon sequestration operations. During the injection and early post-injection periods, CO2 leakage may occur ...