Essays about: "Homogenization"

Showing result 6 - 10 of 79 essays containing the word Homogenization.

  1. 6. Improved Statistical Methods for Elliptic Stochastic Homogenization Problems : Application of Multi Level- and Multi Index Monte Carlo on Elliptic Stochastic Homogenization Problems

    University essay from Uppsala universitet/Tillämpad beräkningsvetenskap

    Author : Khalil Daloul; [2023]
    Keywords : Homogenization; Multilevel Monte Carlo; Multi-Index Monte Carlo; Monte Carlo; Multiscale methods;

    Abstract : In numerical multiscale methods, one relies on a coupling between macroscopic model and a microscopic model. The macroscopic model does not include the microscopic properties that the microscopic model offers and that are vital for the desired solution. READ MORE

  3. 7. Homogenization of a higher gradient heat equation: Numerical solution of the cell problem using quadratic B--spline based finite elements

    University essay from Karlstads universitet/Institutionen för matematik och datavetenskap (from 2013)

    Author : Samba Dumbuya; [2023]
    Keywords : Homogenization of a higher gradient heat equation; Two-scale expansion; fourth-order cell problem; temperature distribution; quadratic B-spline; finite element methods; effective conductivity vs volume fraction;

    Abstract : This study focuses on the numerical solution of a fourth-order cell problem obtained through a two- scale expansion approach applied to a higher gradient heat equation microscopic problem involving temperature distributions. The main objective is to investigate the temperature field within the macroscale domain and compute the effective conductivity using finite element methods. READ MORE

  4. 8. Research on the Impetus of Douyin to City Tourist Image Construction and Dissemination in China - The Case of Xi’an

    University essay from Lunds universitet/Centrum för öst- och sydöstasienstudier

    Author : Jie Xu; [2023]
    Keywords : City tourist images’ construction and dissemination; Semiotic theory; “5W” communication theory; Diversification and homogenization; Destination images of Xi’an; China; Social Sciences;

    Abstract : This thesis investigated how the short video sharing application Douyin produces an effect on city tourist images’ construction and dissemination in China, taking the Internet-famous city of Xi’an as a case study. Based on the semiotic theory and “5W” communication theory, the author collected 30 Xi’an-related short videos on Douyin as samples and recorded the relevant data manually for analysis. READ MORE

  5. 9. Multi-Scale Topology Optimization of Lattice Structures Using Machine Learning

    University essay from Uppsala universitet/Tillämpad mekanik

    Author : Julia Ibstedt; [2023]
    Keywords : Topology optimization; Multi-scale topology optimization; Machine learning; Gaussian process; Homogenization; Inverse homogenization; Anisotropic materials; Symmetry groups; Material property space; Topologioptimering; Flerskalig topologioptimering; Maskininlärning; Gaussian process; Homogenisering; Anisotropa material; Symmetrigrupper; Materialegenskapsrymd;

    Abstract : This thesis explores using multi-scale topology optimization (TO) by utilizing inverse homogenization to automate the adjustment of each unit-cell's geometry and placement in a lattice structure within a pressure vessel (the design domain) to achieve desired structural properties. The aim is to find the optimal material distribution within the design domain as well as desired material properties at each discretized element and use machine learning (ML) to map microstructures with corresponding prescribed effective properties. READ MORE

  6. 10. Improving the sensorial properties of pea protein through fermentation

    University essay from Lunds universitet/Förpackningslogistik

    Author : Antonios Stamatakis; [2023]
    Keywords : Lactic acid fermentation; fermented pea powder; cultures and screening; physicochemical properties; sensory analysis.; Agriculture and Food Sciences;

    Abstract : Lactic acid fermentation has been a widely used process for many years, offering nutritional and sensory benefits to plant proteins. In this study, the objective was to produce a fermented pea powder with enhanced sensory properties by combining previous research from FrieslandCampina. READ MORE