Sökning: "First passage time model"
Visar resultat 1 - 5 av 11 uppsatser innehållade orden First passage time model.
1. Evaluating an increased spill regime as a management tool to improve downstream passage of salmon smolt
Master-uppsats, Karlstads universitet/Institutionen för miljö- och livsvetenskaper (from 2013)Sammanfattning : The anadromous Atlantic salmon (Salmo salar) is dependent on river connectivity to reach spawning and rearing habitats in rivers. Most rivers are today fragmented by artificial barriers such as hydroelectric powerplants (HEP) which impede this migratory movement. LÄS MER
2. Colliding Galaxies in a (Nut)Shell
Master-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation; Lunds universitet/Fysiska institutionenSammanfattning : Galaxy interactions and mergers are natural recurring events in the current cosmological paradigm, events that often coincide with starbursts and enhanced star formation activity. To understand why that is, one can use idealised (non-cosmological) merger simulations, which provide freedom to recreate specific tidally distorted galaxies, and analysis of the time evolution and underlying physics of the star formation activity at a high spatial resolution. LÄS MER
3. Ett diadem och dess ikonografi : En studie av kejsarinnan Josephines pärl- och kamédiadem i porträtt mellan 1812 och 2010
Kandidat-uppsats, Uppsala universitet/Konstvetenskapliga institutionenSammanfattning : The main purpose of this study of a pearl and cameo diadem, given by Napoleon to his first wife Josephine in 1809, is to follow its representation in portraiture from Paris in 1812 to Stockholm in 2010, and explore how the iconography develops during these 200 years. From the earlier years, the diadem is found only in miniatures, then after coming to the new royal family in Sweden, the Bernadottes, it is given a role of an heirloom representing history and families in grand paintings, arriving to the present well-known wedding hairpiece, covered by modern media, where the diadem is more of a crown than the open, forehead-covering piece of fashion jewellery it was during the Napoleonic era in France. LÄS MER
4. Zero-shot, One Kill: BERT for Neural Information Retrieval
Master-uppsats, Uppsala universitet/Institutionen för lingvistik och filologiSammanfattning : [Background]: The advent of bidirectional encoder representation from trans- formers (BERT) language models (Devlin et al., 2018) and MS Marco, a large scale human-annotated dataset for machine reading comprehension (Bajaj et al., 2016) that made publicly available, led the field of information retrieval (IR) to experience a revolution (Lin et al. LÄS MER
5. Preliminary simulation of Porjus U9 turbine at speed no load
Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematikSammanfattning : Hydropower plants are shifting towards operating at off-designed conditions, meaning that the number of start-stop cycles and maintenance time due to cavitation increases. The speed no-load condition is the moment before magnetization of the generator, i.e., no load, low flow, constant runner rotational speed, guide vane and runner blade angle. LÄS MER
