Essays about: "Media Equation"

Showing result 11 - 15 of 34 essays containing the words Media Equation.

  1. 11. Numerical Analysis of the Two Dimensional Wave Equation : Using Weighted Finite Differences for Homogeneous and Hetrogeneous Media

    University essay from Uppsala universitet/Avdelningen för beräkningsvetenskap

    Author : Christian Böhme; Anton Holmberg; Martin Nilsson Lind; [2020]
    Keywords : hetrogeneous media; variable wave speed; wave equation; finite differences; gamma method; multigrid; weighted central difference; numerical analysis; agmg; gamma discretisation; two dimensional wave equation;

    Abstract : This thesis discusses properties arising when finite differences are implemented forsolving the two dimensional wave equation on media with various properties. Both homogeneous and heterogeneous surfaces are considered. READ MORE

  3. 12. Numerical simulations of the Dynamic Beam Equation in discontinuous media

    University essay from Uppsala universitet/Avdelningen för beräkningsvetenskap

    Author : Niklas Wik; David Niemelä; Valter Wagner Zethrin; [2020]
    Keywords : Dynamic beam equation; DBE; SAT; projection; SBP;

    Abstract : The study examines the Projection method and the simultaneousapproximation-term (SAT) method as boundary treatment for the dynamic beam equation using summation-by-parts (SBP) operators for handling the inner domain. The methods are examined for both the homogeneous constant coefficient case, and the inhomogeneous piecewise constant coefficient case with a coupled interface. READ MORE

  4. 13. Towards Identification of Effective Parameters in Heterogeneous Media

    University essay from

    Author : David Johansson; [2020]
    Keywords : parameter identification; multiscale modelling; homogenization theory; partial differential equations; inverse modelling;

    Abstract : In this thesis we study a parameter identification problem for a stationary diffusion equation posed in heterogeneous media. This problem is closely related to the Calderón problem with anisotropic conductivities. The anisotropic case is particularly difficult and is ill-posed both in regards to uniqueness of solution and stability on the data. READ MORE

  5. 14. THE IMPACT OF ENTERPRISE SOCIAL MEDIA ON EMPLOYEE PERFORMANCE: THE MEDIATING ROLE OF ORGANIZATIONAL UNIT.

    University essay from Uppsala universitet/Institutionen för informatik och media

    Author : Jemima Nyambura Osoro; [2020]
    Keywords : ;

    Abstract : Most organizations are adopting enterprise social media (ESM) for interaction, knowledge sharing and collaboration. However, the difference in organizational unit size is one aspect that constantly differs from one organization to another that needs to be investigated to understand how it influences employee performance. READ MORE

  6. 15. Weather Influence on LiDAR Signals using the Transient Radiative Transfer and LiDAR Equations

    University essay from Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Author : Marcus Hedlund; [2020]
    Keywords : Radiative transfer; LiDAR; Transient radiative transfer;

    Abstract : The ongoing development of self driving cars requires accurate measuring devices and the objective of this thesis was to investigate how di↵erent weather will affect one of these devices, known as a LiDAR. A LiDAR uses pulsed laser light to measure the distance to an object. READ MORE