Sökning: "Instabilities"

Visar resultat 1 - 5 av 111 uppsatser innehållade ordet Instabilities.

  1. 1. Off-State Stress Effects in AlGaN/GaN HEMTs : Investigation of high-voltage off-state stress impact on performance of and its retention in hybrid-drain ohmic gate AlGaN/GaN HEMTs

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

    Författare :Ivan Krsic; [2023]
    Nyckelord :HEMT; GaN; off-state stress; memory effects; drain leakage current; dynamic RDSon; threshold voltage instabilities; charge redistribution; HEMT; GaN; stress i avslaget tillstånd; minneseffekter; läckströmmen; dynamisk RDSon; instabiliteten hos styrets tröskelspänning; omfördelningen av laddningar;

    Sammanfattning : High electron mobility transistors (HEMTs) realized using AlxGa1-xN/GaN are relatively new technology which is prominent for high-speed and high-power applications. Some of the main problems with this technology were identified as dynamic RDSon, current collapse and threshold voltage instabilities due to the off-state stress. LÄS MER

  3. 2. Embracing a precarious life : A study on the instabilities of the life of an independent dance artist

    Master-uppsats, Stockholms konstnärliga högskola/Institutionen för danspedagogik

    Författare :Clara Sjölin; [2023]
    Nyckelord :Dance; Insabillity; independent dance artist; precariat; collective; leadership; collaboration; diffractive analysis;

    Sammanfattning : The research question that motivates this study is: how might I, together with a collective of dance artists, explore stability while embracing instability? Looking at the precarious lives of independent dance artists in the context of Europe, this research seeks ways to understand and cope with the various unstable aspects that come with this lifestyle and profession. I place this study in relation to current economic trends where the individual is increasingly in focus, with very few social security rights, and where the dancer is often faced with solitary living and working situations. LÄS MER

  4. 3. Energy Poverty: Geospatial Modelling in 2021 Berlin using publicly available data : KTH Thesis Report

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

    Författare :Rita Aparici Quiñones; [2023]
    Nyckelord :;

    Sammanfattning : Energy services are essential for human development and well-being, and the unequal distribution of them leads to inequalities and vulnerabilities. Energy poverty, generally understood as the inability to heat a household, is an increasingly pressing issue that in the context of political and climatic instabilities could affect more and more households. LÄS MER

  5. 4. Development of a model for ionospheric instabilities in the equatorial region

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :Thea Lepage; [2023]
    Nyckelord :;

    Sammanfattning : This work is part of a bigger project on analyzing the ionospheric dynamics in the equatorial region using simulations. The main objective of this study is to determine and characterize the parameters needed to trigger instabilities and thus the formation of plasma bubbles. LÄS MER

  7. 5. A numerical comparison of the thermoacoustics for different equivalence ratios for n-dodecane using LES

    Master-uppsats, Lunds universitet/Institutionen för energivetenskaper

    Författare :Björn Jarfors; [2023]
    Nyckelord :Computational Fluid Dynamics; Bluff-body stabilised flames; Large Eddy Simulation; Thermoacoustics; Acoustics; NEUMANN Project; Jet engines; Aero engines; Airplanes; Combustion; Numerics; Technology and Engineering;

    Sammanfattning : Klimatförändringarna påverkar vår värld och det behövs ett mer hållbart samhälle. Flygindustrin är i behov av förändring, men flygmotorer är mycket komplexa och tar tid att utveckla. Termoakustiska instabiliteter har kraften att förstöra en motor, men också att minska miljöpåverkan. LÄS MER