Sökning: "time-dependent media"
Visar resultat 1 - 5 av 18 avhandlingar innehållade orden time-dependent media.
1. Numerical modelling of time-dependent metamaterials with the FDTD method
Sammanfattning : Metamaterials are artificial materials, usually composed of so-called meta-atoms, with electromagnetic properties which cannot be found in naturally occurring materials. In this work we study the properties of time-dependent metamaterials (meaning that their electromagnetic properties are varying with time), as well as their potential applications. LÄS MER
2. Time dependent flow around spherical particles and in porous media
Sammanfattning : .... LÄS MER
3. Transient waves in nonstationary media : with applications to lightning and nonlinear media
Sammanfattning : Propagation of transient waves in nonstationary, inhomogeneous, dispersive, stratified media is considered. Waves originating from sources exterior to the scatterer as well as from internal sources are treated. Algorithms are developed and illustrated by computations of wave phenomena in stationary, nonstationary and weakly nonlinear media. LÄS MER
4. Metal release from powder particles in synthetic biological media
Sammanfattning : Humans are exposed to metals and metal-containing materials daily, either conscious, e.g. using metal tools or objects, or unconscious, e.g. LÄS MER
5. Establishment Patterns of Model Diffusion Theory
Sammanfattning : Information technology is now part of almost every product and service, and the ever-increasing rate of technology and software development demands an appropriate software development process model. The model, whichdescribes the software development process, plays a crucial role for success in software projects. LÄS MER