Sökning: "Coarse graining"

Hittade 5 uppsatser innehållade orden Coarse graining.

  1. 1. Exploring time-extended complexity measures in magnetic systems

    L3-uppsats, Uppsala universitet/Materialteori

    Författare :Jannes van Poppelen; [2023]
    Nyckelord :;

    Sammanfattning : Complexity, a fundamental concept in physics, encompasses phenomena spanning atomic to cosmic scales. The natural emergence of complexity can be explained by self-organized criticality. In this work, two complexity measures in magnetic systems are explored. LÄS MER

  3. 2. An alternative explanation for scale-free speed correlations in starling flocks: coarse-graining in time

    Master-uppsats, Linnéuniversitetet/Institutionen för fysik och elektroteknik (IFE)

    Författare :Mate Jagnjic; [2023]
    Nyckelord :scale-free correlations; active matter; starling flocks; coarse-graining;

    Sammanfattning : In a celebrated series of experimental observations, starling flocks have been shown to be characterized by scale-free, long-ranged spatial correlations in their velocity fluctuations. While this is expected for velocity orientation correlations on the basis of simple symmetry-breaking arguments, the same scaling-free behaviour for speed (i.e. LÄS MER

  4. 3. Computation of Effective Local Diffusion Tensor

    Master-uppsats, KTH/Fysik

    Författare :Viktor Pontéus; [2022]
    Nyckelord :Diffusion; Diffusion Tensor; Fokker-Planck; Coarse-graining; Extended Ensembles; Diffusion; Diffusionstensor; Fokker-Planck; Coarse-graining; Utvidgad ensemble;

    Sammanfattning : Numerical simulations of large complex systems such as biomolecules often suffer from the full description of the system having too many dimensions for direct numerical calculations and Monte Carlo methods having trouble overcoming energy barriers. It is therefore desirable to formulate a description in lower dimension which captures the system’s macroscopic behaviour. LÄS MER

  5. 4. Coarse-Graining Fields in Particle-Based Soil Models

    Master-uppsats, Umeå universitet/Institutionen för fysik

    Författare :Björn Ahlman; [2020]
    Nyckelord :Soil mechanics; Soil compaction; Continuum mechanics; Discrete Element Method; Coarse graining; Computational physics;

    Sammanfattning : In soil, where trees and crops grow, heavy vehicles shear and compact the soil, leading to reduced plant growth and diminished nutrient recycling. Computer simulations offer the possibility to improve the understanding of these undesired phenomena. LÄS MER

  7. 5. Simulation of proteins in crowded environments using coarse-graining methods

    Master-uppsats, Lunds universitet/Beräkningsbiologi och biologisk fysik - Genomgår omorganisation; Lunds universitet/Fysiska institutionen

    Författare :Björn Linse; [2016]
    Nyckelord :Proteins; atomistic model; multi-scale modelling; Monte Carlo simulation; relative entropy; Physics and Astronomy;

    Sammanfattning : Of increasing interest in the field of protein modelling and simulation is the effects of crowding. In a living cell, large molecules can take up 30% of the cell plasma volume, and affects the folding and dynamics of proteins. LÄS MER