Sökning: "Method of moments"
Visar resultat 6 - 10 av 175 avhandlingar innehållade orden Method of moments.
6. Frustrated magnetism in icosahedral structures : The influence of order-disorder in quasicrystals and approximant crystals
Sammanfattning : This work will begin with an introduction to quasicrystals (QCs) and their structure, defining the unit cell-equivalent for icosahedral quasiperiodicity: a 3D tiling based on the golden ratio and aperiodic in all three dimensions. We briefly present the cut-and-project method used to generate QCs from a higher dimension hypercrystal, and how to build the 3D Penrose tilings, composed of the two golden rhombohedra. LÄS MER
7. Effect of Uncertainty of Rock Properties on Radionuclide Transport by Groundwater : Implications for Performance Assessments of the Repository of Spent Nuclear Fuel in Heterogeneous Bedrock
Sammanfattning : The overall objective of the current study is to develop a quantitative understanding of the effects of spatial variability in physical and geochemical properties of crystalline rock on the migration of radionuclides along a single fracture in bedrock. A stochastic model was developed to describe the transport of solutes in fractured rock. LÄS MER
8. Urban policies for a contemporary periphery : Insights from eastern Russia
Sammanfattning : In recent decades, the notion of quality of life has been closely associated with the built urban environment and urbanistic practice. Policies addressing public space and aiming at cities’ increased international competitiveness are proliferating. LÄS MER
9. A Detailed Kinetic Model for Calculation of the Soot Particle Size Distribution Function
Sammanfattning : The soot particle size distribution was studied via numerical simulation under diesel like engine conditions using a detailed kinetic soot model. Two different mathematical methods of the soot model description have been used in this work. In the first part of the work, the method of moments is presented. LÄS MER
10. Moment Method Analysis of Antennas in Reverberation Chambers and Cylindrical Structures
Sammanfattning : This thesis is a collection of papers using the method of moments for numerical analysis. The papers can be divided into two main groups; a study of antennas in reverberation chambers and a study of antennas in cylindrical structures.The reverberation chamber is a metal cavity for measuring antennas and other devices. LÄS MER