Sökning: "spectral domain"
Visar resultat 21 - 25 av 149 avhandlingar innehållade orden spectral domain.
21. A Method of Moments Solution for Wires Inside a Reverberation Chamber using Spectral Domain Techniques
Sammanfattning : This thesis describes a method of moment code that can be used for analyzing PEC objects in a reverberation chamber. A major part of the thesis deals with the derivation of an efficient Green¡¯s functions for a PEC cavity in general and a reverberation chamber in particular. LÄS MER
22. Applications of Short Extreme Ultraviolet Pulses to the Spectroscopy of Atoms and Molecules
Sammanfattning : This thesis is devoted to the characterisation in time and frequency, and to spectroscopic application, of extreme ultraviolet (XUV) pulses. High-order harmonic generation or wave mixing processes were used to produce the pulses in the XUV spectral region. LÄS MER
23. Bayesian Modeling of Directional Data with Acoustic and Other Applications
Sammanfattning : A direction is defined here as a multi-dimensional unit vector. Such unitvectors form directional data. Closely related to directional data are axialdata for which each direction is equivalent to the opposite direction.Directional data and axial data arise in various fields of science. LÄS MER
24. 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 reverberationchambers, and a study of antennas in cylindrical structures.The reverberation chamber is a metal cavity for measuring antennas and other devices. LÄS MER
25. Noninvasive characterization of patients with monomorphic ventricular tachycardia and ventricular fibrillation using the signal-averaged electrocardiogram. A study on late potentials and spectral turbulence in patients with ischemic heart disease and in healthy subjects
Sammanfattning : Many people die suddenly from sustained ventricular tachyarrhythmias caused by ischemic heart disease, and the sudden death may be the first presentation of heart disease. If the patients at risk of ventricular tachyarrhythmia could be identified, some patients may be saved. LÄS MER