Sökning: "spektralanalys"
Visar resultat 1 - 5 av 17 uppsatser innehållade ordet spektralanalys.
1. NH Planetary-Scale Circulation in Troposphere and Stratosphere: A Spectral and Dynamical Perspective
Master-uppsats, Uppsala universitet/Luft-, vatten- och landskapsläraSammanfattning : Dynamic Systems Theory (DST) and spectral analysis are employed to study the tropospheric jet stream and the stratospheric polar vortex. The objective is to investigate the relationship between Rossby wave activity and inverse persistence and dimensionality of geopotential height at 250 hPa and 10 hPa, as these two dynamical indicators are expected to show a characteristic behavior of Rossby wave harmonics. LÄS MER
2. Analysis of High and Low Rossby Wave Phase Speed Events Over Northern Mid-Latitudes
Master-uppsats, Uppsala universitet/Luft-, vatten- och landskapsläraSammanfattning : The large-scale, mid-latitude circulation in the upper troposphere is dominated by Rossby waves. The jet stream flows along the wave structure and surface cyclones can be found ahead of the troughs of the waves, propagating eastward. LÄS MER
3. How closely does electricity production follow price signals?
Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)Sammanfattning : This thesis investigates the relation between the day-ahead electricity market prices and the electricity production in the Nordic synchronous area of the European electric power system by looking into the market data ranging from 2015 to the current time. The increasing penetration of variable renewable energy sources, coupled with the deeper electrification in various sectors of the economy, has led to a higher volatility in the market, e. LÄS MER
4. Door closing sound quality related to door sealing stiffness
Master-uppsats, KTH/Marcus Wallenberg Laboratoriet MWLSammanfattning : The door closing action is a recurrent situation when using a vehicle, and its sound is therefore a common sensation, which would elicit pleasant feelings. Sensory pleasantness is an important aspect in terms of customer’s perspective, and it can be a contributing factor when deciding to buy or not a specific vehicle. LÄS MER
5. How to measure the degree of PIT-ness in a credit rating system for a low default portfolio?
Master-uppsats, KTH/Matematisk statistikSammanfattning : In order to be compliant with the Basel regulations, banks need to compute two probabilities of default (PDs): point-in-time (PIT) and through-the-cycle (TTC). The aim is to explain fluctuations in the rating system, which are expected to be affected by systematic and idiosyncratic factors. LÄS MER