Essays about: "Coarse graining"

Found 5 essays containing the words Coarse graining.

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

    University essay from Uppsala universitet/Materialteori

    Author : Jannes van Poppelen; [2023]
    Keywords : ;

    Abstract : 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. READ MORE

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

    University essay from Linnéuniversitetet/Institutionen för fysik och elektroteknik (IFE)

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

    Abstract : 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. READ MORE

  4. 3. Computation of Effective Local Diffusion Tensor

    University essay from KTH/Fysik

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

    Abstract : 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. READ MORE

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

    University essay from Umeå universitet/Institutionen för fysik

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

    Abstract : 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. READ MORE

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

    University essay from Lunds universitet/Beräkningsbiologi och biologisk fysik - Genomgår omorganisation; Lunds universitet/Fysiska institutionen

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

    Abstract : 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. READ MORE