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Showing result 1 - 5 of 263 essays matching the above criteria.

  1. 1. Friends or Foes? Examining 10 years of U.S Intelligence assessments on the China threat, 2013-2023

    University essay from Lunds universitet/Statsvetenskapliga institutionen

    Author : Mir Rashid; [2024]
    Keywords : United States; China; U.S Intelligence Community; US-China relations; Qualitative document analysis; Threat perception theory; Law and Political Science;

    Abstract : This thesis examines how China has been portrayed in the Annual Threat Assessment reports of the U.S. intelligence community between 2013-2023. A qualitative document analysis is conducted on 9 publicly available threat assessment reports issued during this period. READ MORE

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

    University essay from KTH/Fysik

    Author : Atabak Fathe Jalali; [2024]
    Keywords : 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;

    Abstract : 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. READ MORE

  4. 3. Robust non-Abelian geometric phases on three-qubit spin codes

    University essay from Uppsala universitet/Materialteori

    Author : Parham Azish; [2024]
    Keywords : Quantum information theory; Holonomic quantum computing; non-abelian systems;

    Abstract : Quantum holonomies are non-Abelian Geometric Phases predominantly observed in adiabatic, non-adiabatic, or measurement-based quantum evolutions. Their significance lies in their potential utility within quantum computing due to their robustness against noise throughout the parameter path. READ MORE

  5. 4. NATO or Not

    University essay from Lunds universitet/Statsvetenskapliga institutionen

    Author : Anton Näslund; [2024]
    Keywords : NATO; Securitization; Multiple Streams Framework; Security; Policy Process; Law and Political Science;

    Abstract : Using a framework for analyzing security policy consisting of a synthesis of the Multiple Streams Framework by Kingdon (2014) and Securitization theory as described by Balzacq (2010), this study aims to explain the process of Sweden’s national security policy between 2014 and 2022. Such an investigation has relevance particularly for studies of peace, security and policy processes, since it relates to the broader question of what conditions make military alignment possible or impossible. READ MORE

  6. 5. Oscillations in a complex sunspot: From theory to data

    University essay from Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Author : Femke Kranenbarg; [2024]
    Keywords : ;

    Abstract : Sunspot oscillations, intricate three-dimensional wave-like motions in the solar atmosphere, result from the complex interplay between plasma and magnetic fields. This study delves into the behaviour of these oscillations, exploring their simultaneous excitation and evaluating their impact on solar phenomena like coronal heating, energy transport, and solar flares. READ MORE