Sökning: "Variable compression"

Visar resultat 1 - 5 av 21 uppsatser innehållade orden Variable compression.

1. 1. Hydrogen storage systems : Methodology and model development for hydrogen storage systems performance evaluation based on a transient thermodynamic approach

   Master-uppsats, Mälardalens universitet/Akademin för ekonomi, samhälle och teknik

   Författare :Kreshnik Margaritari; [2023]
   Nyckelord :Hydrogen; Hydrogen storage system; Hydrogen filling process; Hydrogen storage system operation; Hydrogen storage system design; Hydrogen fast filling; Hydrogen tank modelling;

   Sammanfattning : The overall performance of a hydrogen storage system can be affected by various parameters, such as operation and design parameters, but also by the state of the hydrogen contained inside the storage tanks. In this work, a methodology is developed to evaluate the state of the hydrogen during the filling process and its impact on the overall system performance under variable operation conditions and design parameters. LÄS MER

3. 2. A Hierarchical Tucker Solver for the Vlasov-Maxwell System

   Master-uppsats, Uppsala universitet/Institutionen för informationsteknologi

   Författare :Oskar Tegby; [2023]
   Nyckelord :;

   Sammanfattning : The Vlasov-Maxwell equations is a common model to describe the behavior of a plasma, but come at the cost of their dimensionality since both spatial and veloocity data is stored in three dimensions. This causes a significant obstacle to be able solve them numerically since the size of the data is N^6, which yields a data size of 8. LÄS MER

4. 3. Makroekonomiska och marknadsspecifika variablers effekt på direktavkastningskravet : –En kvantitativ studie om de drivande faktorerna bakom direktavkastningskravet för kontorsmarknaden i Stockholm CBD

   Kandidat-uppsats, KTH/Fastighetsföretagande och finansiella system

   Författare :Alice Gardby; Bella Franzén; [2023]
   Nyckelord :Capitalization rate; macroeconomics; risk-free rate; vacancy rate; rental growth; GDP growth; real estate market; regression; Direktavkastningskrav; makroekonomi; riskfri ränta; vakansgrad; hyrestillväxt; BNP-tillväxt; fastighetsmarknad; regression;

   Sammanfattning : Direktavkastningskravet är ett avgörande mått inom fastighetsbranschen för att bedöma lönsamheten hos en fastighetsinvestering. Genom att tillämpa direktavkastningskravet kan investerare jämföra och utvärdera lönsamheten hos olika fastigheter och tillgångsslag. LÄS MER

5. 4. Autoencoder Compression in High Energy Physics

   Master-uppsats, Lunds universitet/Partikel- och kärnfysik; Lunds universitet/Fysiska institutionen; Lunds universitet/Lunds Tekniska Högskola

   Författare :Sten Åstrand; [2022]
   Nyckelord :High energy physics; LHC; ATLAS; hadron jet; machine learning; autoencoder; dimensionality reduction; artificial intelligence; data compression; Physics and Astronomy;

   Sammanfattning : Situated in Geneva, Switzerland, the Large Hadron Collider is largest particle accelerator in the world, and as such, its operation carries with it some of the greatest technical challenges ever faced. Among them are the huge demands put on data storage capacity by experiments in particle physics, both in terms of rate and volume of data. LÄS MER

7. 5. Optimizing Control Algorithm for Indirect Liquid ThermalManagement of Batteries : A Study Executed at Northvolt

   Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

   Författare :Mantas Petrosius; [2021]
   Nyckelord :;

   Sammanfattning : The vast expansion of intermittent sustainable energy generation has favoured a gradual adoption of lithium-ion batteries in various industrial and automotive applications. Despite its many inherent merits, this storage technology is very vulnerable to temperature variations: the performance and lifespan of LIBs are substantially influenced by their load cycles, thermal behaviours, and operating temperature range. LÄS MER