Sökning: "DFT"
Visar resultat 1 - 5 av 114 uppsatser innehållade ordet DFT.
1. Implementation of Dyson equation to accelerate convergence in RS-LMTO-ASA code
Master-uppsats, Uppsala universitet/MaterialteoriSammanfattning : First-principle calculations is a key ingredient for us to understand, improve and design new materials. Density functional theory (DFT) [1] has proven to be a very powerful tool and a number of different versions exist depending on the problem at hand. LÄS MER
2. Approach for frequency response-calibration for microphone arrays
M1-uppsats, KTH/Hälsoinformatik och logistikSammanfattning : Matched frequency responses are a fundamental starting point for a variety ofimplementations for microphone arrays. In this report, two methods for frequencyresponse-calibration of a pre-assembled microphone array are presented andevaluated. LÄS MER
3. A theoretical framework for interpretation and prediction of magneto-optical measurements
Kandidat-uppsats, Uppsala universitet/MaterialteoriSammanfattning : The interplay of experiments and theory is essential to deepen our understanding of magnetization dynamics. This thesis aims to serve as a bridge between these two aspects by establishing a mathematical framework that enables the computation of optical observable quantities based on theoretical models. LÄS MER
4. Development and Analysis of Small Signal DQ-Frame Model for Low Frequency Stability of Train Converters
Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)Sammanfattning : In order to meet the increasing demand for sustainable transportation, trains need to run with tighter schedules, more departures and more trains in depot. Multiple trains in depot has been linked to low frequency instability at many locations around the world. LÄS MER
5. First principles investigation of the thermal conductivity of Zr, ZrC, and ZrN
Master-uppsats, KTH/FysikSammanfattning : The thermal conductivity and electrical resistivity of Zr, ZrC, and ZrN were calculated using first-principles density functional theory (DFT) and the Boltzmann transport equation. The electron-phonon scattering was modeled via the self-energy relaxation time approximation (SERTA), and the phonon-phonon scattering via the analogous single-mode relaxation time approximation (SMRTA). LÄS MER