Sökning: "kvadratur"

Visar resultat 1 - 5 av 7 uppsatser innehållade ordet kvadratur.

1. 1. Uncertainty quantification for offshore wind turbines

   Master-uppsats, KTH/Matematik (Avd.)

   Författare :Ziming Wang; [2022]
   Nyckelord :wind energy; uncertainty propagation; polynomial chaos; Rosenblatt transformation; quadrature; regression; vindenergi; osäkerhetsutbredning; polynomkaos; Rosenblatt transformation; kvadratur; regression;

   Sammanfattning : Wind energy is a field with a large number of uncertainties. The random nature of the weather conditions, including wind speed, wind direction, and turbulence intensity, influences the energy output and the structural safety of a wind farm, making its performance fluctuate and difficult to predict. LÄS MER

3. 2. Power Electronic Enhanced Distribution Transformer : Seamless Voltage Regulation with Extended Functionalities

   Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Författare :Nils Johansson; [2022]
   Nyckelord :Hybrid distribution transformer; Power converters; Voltage control; Hybrid power system; Reactive power; Hybrid distrubitionstransformator; Effektomvandlare; Spänningskontroll; Hybrida elnät; Reaktiv effekt;

   Sammanfattning : On-load tap changers and static synchronous compensators (STATCOM) are the main components for voltage regulation and power quality optimization in the power system. STATCOMs are used in both industrial applications and utility to stabilize the grid and reduce downtime. LÄS MER

4. 3. Monte Carlo Integration: A Comparison to Numerical Quadrature

   Kandidat-uppsats, Lunds universitet/Matematik (naturvetenskapliga fakulteten); Lunds universitet/Matematikcentrum

   Författare :Mirjam Karlsson-Müller; [2021]
   Nyckelord :Monte Carlo Methods; Approximation of Integrals; Numerical Quadrature; Curse of Dimensionality; Integrals; Monte Carlo; Mathematics and Statistics;

   Sammanfattning : Integrals are present everywhere in science, and their computation an emphasis in education. When methods of exact computation fail, a great variety of methods of approximation can step in. This project is interested in the Monte Carlo integration methods, an approach, where the integral is approximated based on the Law of Large Numbers. LÄS MER

5. 4. An Exploration of Galois Theory with some Classical Results

   Kandidat-uppsats, Lunds universitet/Matematik (naturvetenskapliga fakulteten); Lunds universitet/Matematik LTH

   Författare :Olof Klingberg; [2020]
   Nyckelord :Galois theory; Algebra; Field theory; Mathematics and Statistics;

   Sammanfattning : Galois theory unites field theory and group theory to solve some field theoretical problems. The aim of this thesis is to provide a concise introduction to the topic, culminating in the proof of the insolubility of the general quintic equation by radicals. LÄS MER

7. 5. The effects of grazing and climate warming on plant species in the Faroe Islands

   Master-uppsats, SLU/Dept. of Ecology

   Författare :Kolbrún í Haraldsstovu; [2020]
   Nyckelord :climate change; grazing; plant responses; environmental pressures; frequency; experimental warming; functional plant traits; resilience;

   Sammanfattning : The Faroe Islands are composed of eighteen small islands situated in the middle of the North Atlantic Ocean. Heavily affected by grazing and harsh weather conditions, the mountaintop vegetation is exposed to multiple environmental pressures. In this project I examined the effects of climate warming and grazing on Faroese plant species. LÄS MER