Search for dissertations about: "stochastic model"

Showing result 1 - 5 of 303 swedish dissertations containing the words stochastic model.

  1. 1. Modelling animal populations

    Author : Åke Brännström; Umeå universitet.; [2004]
    Keywords : population model; stochastic population model; population dynamics; discrete time model; Beverton-Holt model; Skellam model; Hassell model; Ricker model; first principles; coupled map lattice; CML; area integral; square function; Mathematics; matematik;

    Abstract : This thesis consists of four papers, three papers about modelling animal populations and one paper about an area integral estimate for solutions of partial differential equations on non-smooth domains. The papers are:I. Å. Brännström, Single species population models from first principles. READ MORE

  2. 2. Improved pharmacometric model building techniques

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Radojka Savic; Uppsala universitet.; [2008]
    Keywords : Model building; Absorption model; Transit compartment model; Nonparametric method; Extended grid method; Semiparametric; Distribution transformation; Shrinkage; Model diagnostics;

    Abstract : Pharmacometric modelling is an increasingly used method for analysing the outcome from clinical trials in drug development. The model building process is complex and involves testing, evaluating and diagnosing a range of plausible models aiming to make an adequate inference from the observed data and predictions for future studies and therapy. READ MORE

  3. 3. Graphical representations of Ising and Potts models : Stochastic geometry of the quantum Ising model and the space-time Potts model

    University dissertation from Stockholm : US AB

    Author : Jakob Erik Björnberg; KTH.; [2009]
    Keywords : Quantum Ising model; Ising model; Potts model; random-cluster model; random-current representation; random-parity representation; differential inequality; phase transition; MATHEMATICS Algebra; geometry and mathematical analysis Discrete mathematics; MATEMATIK Algebra; geometri och analys Diskret matematik;

    Abstract : HTML clipboard Statistical physics seeks to explain macroscopic properties of matter in terms of microscopic interactions. Of particular interest is the phenomenon of phase transition: the sudden changes in macroscopic properties as external conditions are varied. READ MORE

  4. 4. Contributions to Numerical Solution of Stochastic Differential Equations

    University dissertation from Chalmers University of Technology

    Author : Anders Muszta; Chalmers tekniska högskola Göteborgs universitet.; Chalmers University of Technology University of Gothenburg.; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; MATEMATIK; MATHEMATICS; adaptive method; change of time; CIR model; CKLS model; convergence order; Euler method; heavy-tailed SDE; hyperbolic SDE; geometric integration; global Lipschitz condition; Levy process; Lie group method; local Lipschitz condition; local martingales; mean reversion; Milstein method; numerical method; semimartingale; stochastic differential equation; stochastic Taylor expansion; strong approximation; symplectic integration; volatility induced stationarity; waveform relaxation;

    Abstract : This thesis consists of four papers: Paper I is an overview of recent techniques in strong numerical solutions of stochastic differential equations, driven by Wiener processes, that have appeared the last then 10 years, or so. Paper II studies theoretical and numerical aspects of stochastic differential equations with so called volatility induced stationarity. READ MORE

  5. 5. Infinite-state Stochastic and Parameterized Systems

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Noomene Ben Henda; Uppsala universitet.; Uppsala universitet.; [2008]
    Keywords : program verification; model checking; stochastic games; infinite-state systems; Markov chains; reachability; repeated reachability; parameterized systems; approximation; safety; tree systems;

    Abstract : A major current challenge consists in extending formal methods in order to handle infinite-state systems. Infiniteness stems from the fact that the system operates on unbounded data structure such as stacks, queues, clocks, integers; as well as parameterization. READ MORE