Sökning: "Dynamical system"

Visar resultat 1 - 5 av 153 uppsatser innehållade orden Dynamical system.

  1. 1. Simuleringsdriven inferens av stokastiska dynamiska system

    Kandidat-uppsats, Göteborgs universitet/Institutionen för matematiska vetenskaper

    Författare :Alfred Andersson; Vilgot Jansson; Noah Trädgårdh; Jacob Welander; Victor Wellsmo; [2023-11-28]
    Nyckelord :;

    Sammanfattning : Stokastiska modeller, som ger tillförlitlig och användbar information om ett systems beteende, består ofta av stokastiska differentialekvationer (SDE) vars likelihoodfunktion inte är analytiskt tillgänglig. Mer traditionella Markov Chain Monte Carlo-metoder (MCMC) samt relativt nyligen utvecklade likelihood-fria Approximate Bayesian Computation-metoder (ABC) utgör populära angrepssätt för att utföra inferens på dessa typer av problem. LÄS MER

  3. 2. A Borel-Cantelli lemma for non-stationary dynamical systems

    Master-uppsats, Lunds universitet/Matematik LTH

    Författare :Teodor Åberg; [2023]
    Nyckelord :Borel-Cantelli lemmas; Dynamical systems; Mathematics and Statistics;

    Sammanfattning : In this thesis we present a Borel–Cantelli lemma for dynamical systems such that the dynamics driving the system varies with time. These results are largely based on a decomposition of transfer operators produced by Rychlik. Some limitations on the structure of sequences that is necessary for the results is given some discussion. LÄS MER

  4. 3. Data Assimilation for Systems with Multiple Timescales

    Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

    Författare :Dan Vicente Ihanus; [2023]
    Nyckelord :Mathematics; Partial Differential Equations; Numerical analysis; Data assimilation; Numerical weather prediction; Ensemble Kalman Filter;

    Sammanfattning : This text provides an overview of problems in the field of data assimilation. We explore the possibility of recreating unknown data by continuously inserting known data into certain dynamical systems, under certain regularity assumptions. LÄS MER

  5. 4. Start of a new design method for a competitive Small Modular Reactor (SMR) adaptable to future uses

    Master-uppsats, KTH/Skolan för teknikvetenskap (SCI)

    Författare :Baptiste Mazurié; [2023]
    Nyckelord :Requirement modelling; Cyber-physical systems; Small Modular Reactor SMR ; Systems Engineering; CRML;

    Sammanfattning : As cyber-physical systems become increasingly complex, the management and verification of requirements during design is essential. A new language called CRML (Common Requirement Modelling Language) has been created during the European EMBrACE project to formalize realistic dynamical requirements, but a method for representing these requirements and a framework for using them as a design aid must be defined to ease appropriation by engineers. LÄS MER

  7. 5. Dynamic Consequences of Bearing Radial Clearance in Jeffcott Rotors

    Kandidat-uppsats, Umeå universitet/Institutionen för matematik och matematisk statistik

    Författare :Marcus Bohman; [2023]
    Nyckelord :;

    Sammanfattning : Earlier research on bearing radial clearance on a vertical Jeffcott rotor is rare, but an interesting and realistic point of view in a rotor system. Applying this force to the system produces interesting results for a vertical Jeffcott rotor. LÄS MER