Sökning: "Time Collapse"

Visar resultat 1 - 5 av 155 uppsatser innehållade orden Time Collapse.

  1. 1. Gravitational Collapse of a Massless Scalar Field in a Theory of Minimally Modified Gravity

    Master-uppsats, KTH/Fysik

    Författare :Atabak Fathe Jalali; [2024]
    Nyckelord :Theoretical physics; astrophysics; modified gravity; minimally modified gravity; gravitational collapse; VCDM; scalar collapse; apparent horizon; numerical relativity; Teoretisk fysik; astrofysik; modifierad gravitation; minimalt modifierad gravitation; gravitationskollaps; VCDM; skalär kollaps; uppenbar horisont; numerisk relativitet;

    Sammanfattning : This thesis explores the spherically symmetric gravitational collapse of a massless scalar field in a minimally modified gravity theory denoted VCDM (V replaces $\Lambda$ in the $\Lambda$CDM abbreviation), a class of theories propagating the same degrees of freedom as general relativity at the expense of broken 4D diffeomorphism invariance. Numerical evolution of the equations of motion reveals that for small initial scalar profile amplitudes, no black hole forms from the collapse. LÄS MER

  3. 2. 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

  4. 3. Sambandet mellan ekonomistyrning och bolagsstyrning : En studie om hur sambandet mellan ekonomistyrning och bolagsstyrning kom till uttryck vid kollapsen av HQ Bank

    Magister-uppsats, Linnéuniversitetet/Institutionen för management (MAN)

    Författare :Ida Thuresson; Alma Ekström; [2023]
    Nyckelord :Management accounting; Corporate governance; Risk management; HQ Bank; Internal control; Organizational culture and financial reporting.; Ekonomistyrning; Bolagsstyrning; Riskhantering; HQ Bank; Intern kontroll; Organisationskultur och Finansiell rapportering;

    Sammanfattning : Examensarbete, Civilekonomprogrammet med inriktning Controller, Ekonomihögskolan vid Linnéuniversitetet i Växjö, Vårterminen 2023. Titel: Sambandet mellan ekonomistyrning och bolagsstyrning: En studie om hur sambandet mellan ekonomistyrning och bolagsstyrning kom till uttryck vid kollapsen av HQ Bank. LÄS MER

  5. 4. The Effect of Economic Policy Uncertainty on Swedish Exports during the 2008 Financial Crisis

    Kandidat-uppsats, Lunds universitet/Ekonomisk-historiska institutionen

    Författare :Andrea Wigert; [2023]
    Nyckelord :Financial Crisis; Economic Policy Uncertainty; Sweden; Germany; the UK; the Netherlands; Exports; Business and Economics;

    Sammanfattning : The thesis aims to answer the research question: To what extent was the increased Economic Policy Uncertainty during the Financial Crisis associated with the decline in Swedish exports from January 2007 to January 2010? During the 2008 Financial Crisis, Swedish trade fell by ten percentage points, slightly more than the world average. The thesis aims to investigate whether the increased EPU at the time affected the decreased exports. LÄS MER

  7. 5. Quantification of DNA Nanoballs Using Image Processing Techniques

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Avdelningen Vi3

    Författare :Sara Lindberg; [2023]
    Nyckelord :image analysis; fluorescence microscopy; quantification; DNA; rolling circle amplification; machine learning; deep learning; transfer learning; neural networks;

    Sammanfattning : In gene editing, it is important to identify the number of edited and unedited nucleic acids in the development of new therapies and drugs. Countagen is developing a technology for accelerating genomic research and their product is called GeneAbacus. LÄS MER